feat: Impl synthetic book

refactor: Change spreader leg qty to int
The synth book computation code doesn't support doubles
2022-11-28 10:42:05 -05:00 · 2022-11-25 13:20:34 -05:00 · 2022-11-25 13:20:33 -05:00 · 2022-11-20 14:22:42 -05:00 · 2022-11-10 07:18:42 -05:00 · 2022-11-09 23:13:16 -05:00
4191 changed files with 713698 additions and 403860 deletions
@@ -4,7 +4,6 @@ BinPackParameters: false
 AlignAfterOpenBracket: AlwaysBreak
 AlwaysBreakTemplateDeclarations: true
 PenaltyReturnTypeOnItsOwnLine: 140
-ReflowComments: false
 ---
 Language: Proto
 IndentWidth: 2
@@ -7,24 +7,6 @@
      "commands": [
        "dotnet-format"
      ]
-    },
-    "fable": {
-      "version": "4.0.6",
-      "commands": [
-        "fable"
-      ]
-    },
-    "fantomas": {
-      "version": "5.2.2",
-      "commands": [
-        "fantomas"
-      ]
-    },
-    "fake-cli": {
-      "version": "6.0.0",
-      "commands": [
-        "fake"
-      ]
    }
  }
-}
+}
@@ -1,123 +0,0 @@
-FROM ubuntu:22.04
-
-ARG DEBIAN_FRONTEND=noninteractive
-
-# Note installations that take a while (more than 10s)
-
-RUN apt-get update
-RUN apt-get install -y ca-certificates
-RUN apt-get install -y ccache
-RUN apt-get install -y curl
-RUN apt-get install -y fish
-RUN apt-get install -y gdb
-# git-all: ~250s
-RUN apt-get install -y git-all
-RUN apt-get install -y gnupg
-# liblttng-ust-dev: ~30s
-RUN apt-get install -y liblttng-ust-dev
-RUN apt-get install -y libssh2-1-dev
-RUN apt-get install -y locales
-RUN apt-get install -y ninja-build
-# openssh-server: ~40s
-RUN apt-get install -y openssh-server
-RUN apt-get install -y pkg-config
-RUN apt-get install -y software-properties-common
-RUN apt-get install -y sudo
-RUN apt-get install -y tzdata
-RUN apt-get install -y vim
-RUN apt-get install -y zip
-
-# Python: ~30s
-RUN apt-get install -y \
-   python3-pip \
-   python3-venv \
-   && python3 -m pip install --upgrade pip
-
-# GCC
-ARG gcc_major=13
-RUN \
-   add-apt-repository ppa:ubuntu-toolchain-r/test \
-   && apt-get update \
-   && apt-get install -y g++-$gcc_major
-
-# Clang
-ARG clang_major=17
-RUN \
-   curl -fsSL https://apt.llvm.org/llvm-snapshot.gpg.key 2> /dev/null \
-   | gpg --dearmor - \
-   | tee /usr/share/keyrings/llvm-snapshot.gpg > /dev/null \
-   && echo "deb [signed-by=/usr/share/keyrings/llvm-snapshot.gpg] http://apt.llvm.org/$(lsb_release -cs)/ llvm-toolchain-$(lsb_release -cs)-$clang_major main" \
-   | tee -a "/etc/apt/sources.list.d/llvm.list" \
-   && apt-get update \
-   && apt-get install -y \
-   clang-$clang_major \
-   clang-format-$clang_major \
-   clangd-$clang_major
-
-# CMake
-RUN \
-   curl -fsSL https://apt.kitware.com/keys/kitware-archive-latest.asc 2> /dev/null \
-   | gpg --dearmor - \
-   | tee /usr/share/keyrings/kitware-archive-keyring.gpg > /dev/null \
-   && echo "deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ $(lsb_release -cs) main" \
-   | tee /etc/apt/sources.list.d/kitware.list > /dev/null \
-   && apt-get update \
-   && apt-get install -y cmake
-
-# Dotnet
-RUN apt-get update && apt-get install -y dotnet7
-RUN apt-get update && apt-get install -y dotnet8
-
-# Node
-ARG node_major=18
-RUN mkdir -p /etc/apt/keyrings \
-   && curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key \
-   | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg \
-   && echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$node_major.x nodistro main" \
-   | tee /etc/apt/sources.list.d/nodesource.list \
-   && apt-get update \
-   && apt-get install -y nodejs
-
-# Emumba (deps)
-RUN apt-get update && apt-get -y install rapidjson-dev
-# Emumba
-COPY emumba /emumba
-RUN dpkg -i /emumba/emumba-deribit-connector-3.3.1-Linux.LICENSE_DISABLED.deb \
-    && rm -r /emumba
-
-# Pcap
-RUN apt-get update && apt-get install -y libpcap0.8-dev
-
-# Set up default executables (update-alternatives)
-RUN \
-   update-alternatives --install /usr/bin/clang clang /usr/bin/clang-$clang_major 100; \
-   update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-$clang_major 100; \
-   update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-$clang_major 100; \
-   update-alternatives --install /usr/bin/clangd clangd /usr/bin/clangd-$clang_major 100; \
-   update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-$gcc_major 100; \
-   update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-$gcc_major 100
-
-# Add compiler symlinks for ccache 
-RUN \
-   ln -s /usr/bin/ccache /usr/local/bin/clang; \
-   ln -s /usr/bin/ccache /usr/local/bin/clang++; \
-   ln -s /usr/bin/ccache /usr/local/bin/clang-$clang_major; \
-   ln -s /usr/bin/ccache /usr/local/bin/clang++-$clang_major; \
-   ln -s /usr/bin/ccache /usr/local/bin/gcc; \
-   ln -s /usr/bin/ccache /usr/local/bin/g++
-
-RUN locale-gen en_US.UTF-8
-
-ARG docker_user="bts"
-ARG docker_uid="1000"
-ARG docker_pass="bts"
-
-RUN \
-   groupadd -g "$docker_uid" "$docker_user" \
-   && useradd \
-   -m \
-   -u "$docker_uid" \
-   -g "$docker_uid" \
-   -G sudo \
-   --password "$(openssl passwd -1 "$docker_pass")" \
-   "$docker_user"
@@ -1,58 +0,0 @@
-{
-  "dockerFile": "Dockerfile",
-  // Creates local dir to mount to HOME in docker 
-  "initializeCommand": "mkdir -p ${localEnv:HOME}/.bts/devcontainer-mounts/${devcontainerId}",
-  "hostRequirements": {
-    "memory": "4gb",
-    "storage": "6gb"
-  },
-  "postCreateCommand": "/home/bts/spark/docker/sparkd/dev/devcontainer_post_create.sh",
-  "containerUser": "bts",
-  "workspaceMount": "source=${localWorkspaceFolder},target=/home/bts/spark,type=bind",
-  "workspaceFolder": "/home/bts/spark",
-  "updateRemoteUserUID": true,
-  "shutdownAction": "none",
-  // Note: If running multiple containers on the same host, each must use a
-  // unique set of ports. Usually we just add 1000 to each port as needed. For
-  // example, if 8000-8003 is taken, go with 9000-9003, then 10000-10003, etc.
-  "runArgs": [
-    "--shm-size",
-    "2gb",
-    "-p",
-    "5000:5000",
-    "-p",
-    "5001:5001",
-    "-p",
-    "5173:5173",
-    "-p",
-    "5174:5174",
-    "-p",
-    "8000:8000",
-    "-p",
-    "8001:8001",
-    "-p",
-    "8002:8002",
-    "-p",
-    "8003:8003",
-    "-p",
-    "12345:12345",
-  ],
-  "mounts": [
-    "source=${localEnv:HOME}/.bts/devcontainer-mounts/${devcontainerId},target=/home/bts,type=bind"
-  ],
-  "customizations": {
-    "vscode": {
-      "settings": {
-        "clangd.arguments": [
-          "--compile-commands-dir=${workspaceFolder}/build/clang/debug"
-        ]
-      },
-      "extensions": [
-        "eamodio.gitlens",
-        "llvm-vs-code-extensions.vscode-clangd",
-        "ms-vscode.cmake-tools",
-        "ms-vscode.cpptools"
-      ]
-    }
-  }
-}
@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-
-this_dir="$(realpath "$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")")"
-sudo dpkg -i "$this_dir/emumba-deribit-connector-3.3.1-Linux.LICENSE_DISABLED.deb"
@@ -207,23 +207,17 @@ dotnet_naming_symbols.parameters.applicable_accessibilities = public,internal,pr
 dotnet_naming_symbols.private_symbols.applicable_kinds = property,method,field,event,delegate
 dotnet_naming_symbols.private_symbols.applicable_accessibilities = protected,private

-# local symbols
-dotnet_naming_symbols.local_symbols.applicable_kinds = local
-
-# parameter symbols
-dotnet_naming_symbols.parameter_symbols.applicable_kinds = parameter
-
 # Naming styles

-dotnet_naming_style.pascal_case.required_prefix =
-dotnet_naming_style.pascal_case.required_suffix =
-dotnet_naming_style.pascal_case.word_separator =
-dotnet_naming_style.pascal_case.capitalization = pascal_case
+dotnet_naming_style.snake_case.required_prefix =
+dotnet_naming_style.snake_case.required_suffix =
+dotnet_naming_style.snake_case.word_separator = _
+dotnet_naming_style.snake_case.capitalization = all_lower

-dotnet_naming_style.camel_case.required_prefix =
-dotnet_naming_style.camel_case.required_suffix =
-dotnet_naming_style.camel_case.word_separator =
-dotnet_naming_style.camel_case.capitalization = camel_case
+dotnet_naming_style.private_snake_case.required_prefix = _
+dotnet_naming_style.private_snake_case.required_suffix =
+dotnet_naming_style.private_snake_case.word_separator = _
+dotnet_naming_style.private_snake_case.capitalization = all_lower

 dotnet_naming_style.user_types.required_prefix =
 dotnet_naming_style.user_types.required_suffix =
@@ -235,10 +229,6 @@ dotnet_naming_style.interface.required_suffix =
 dotnet_naming_style.interface.word_separator =
 dotnet_naming_style.interface.capitalization = pascal_case

-dotnet_naming_style.local.capitalization = camel_case
-
-dotnet_naming_style.parameter.capitalization = camel_case
-
 # rules
 dotnet_naming_rule.user_types.symbols = user_types
 dotnet_naming_rule.user_types.style = user_types
@@ -248,18 +238,14 @@ dotnet_naming_rule.interfaces.symbols = interface
 dotnet_naming_rule.interfaces.style = interface_style
 dotnet_naming_rule.interfaces.severity = suggestion

-dotnet_naming_rule.public_members.symbols = public_symbols
-dotnet_naming_rule.public_members.style = pascal_case
-dotnet_naming_rule.public_members.severity = suggestion
+dotnet_naming_rule.public_members_snake_case.symbols = public_symbols
+dotnet_naming_rule.public_members_snake_case.style = snake_case
+dotnet_naming_rule.public_members_snake_case.severity = suggestion

-dotnet_naming_rule.private_members.symbols = private_symbols
-dotnet_naming_rule.private_members.style = camel_case
-dotnet_naming_rule.private_members.severity = suggestion
+dotnet_naming_rule.private_members_snake_case.symbols = private_symbols
+dotnet_naming_rule.private_members_snake_case.style = private_snake_case
+dotnet_naming_rule.private_members_snake_case.severity = suggestion

-dotnet_naming_rule.variables_are_camel_case.severity = suggestion
-dotnet_naming_rule.variables_are_camel_case.symbols = local_symbols
-dotnet_naming_rule.variables_are_camel_case.style = local
-
-dotnet_naming_rule.parameters.symbols = parameter_symbols
-dotnet_naming_rule.parameters.style = parameter
+dotnet_naming_rule.parameters.symbols = parameters
+dotnet_naming_rule.parameters.style = snake_case
 dotnet_naming_rule.parameters.severity = suggestion
@@ -1,3 +0,0 @@
-*.cmd text=auto eol=crlf
-*.cs text=auto eol=crlf
-*.sh text=auto eol=lf
@@ -1,6 +1,5 @@
 nohup.out
-build/**
-install/**
+build/
 .build_proxy/
 cmake-build-debug/
 .cache/
@@ -8,9 +7,7 @@ cmake-build-debug/
 .idea/
 .dir-locals.el
 *.pyc
-**.vscode/*
-!.vscode/launch.json
-!.vscode/tasks.json
+**.vscode
 .vs
 obj/
 *.csproj.user
@@ -43,19 +40,14 @@ trace_data/
 .ionide/*
 /.ignore
 *.rej
+/build
+/build.*/*
 .clangd/
 *CMakeDeps.cmake
 /sniper.ipynb
 /src/.clang-format
 /src/server/sparkd/cmds/spartan/analysis/.ipynb_checkpoints
 /src/server/sparkd/cmds/spartan/analysis/data
-.tmp/
-.venv*/
+*.tmp/*
+/.venv*/*
 .cache/
-/src/Spark.Admin.WebApp/tsconfig.*.g.json
-/src/Spark.Admin.WebApp/src/bin/
-**/CMakeDeps.cmake
-**/CMakeDeps_win.cmake
-.devcontainer/
-*.Generated.cs
-*.lst
@@ -1,6 +1,12 @@
 [submodule "externals"]
 	path = externals
-	url = https://bitbucket.org/bluetradesys/externals.git
-[submodule "vcpkg"]
-	path = vcpkg
-	url = https://github.com/microsoft/vcpkg.git
+	url = git@bitbucket.org:bluetradesys/externals.git
+[submodule "docker/linux"]
+	path = docker/linux
+	url = git@bitbucket.org:bluetradesys/linux_docker.git
+[submodule "docker/windows"]
+	path = docker/windows
+	url = git@bitbucket.org:bluetradesys/windows_docker.git
+[submodule "src/deribit-crypto-connector-demo-application"]
+	path = src/deribit-crypto-connector-demo-application
+	url = git@gitlab.com:cryptoexchanges1/deribit-crypto-connector-demo-application.git
@@ -1,213 +0,0 @@
-{
-  "version": "0.2.0",
-  "configurations": [
-    {
-      "name": ".NET Core Attach",
-      "type": "coreclr",
-      "request": "attach"
-    },
-    {
-      "name": "Bts.DataStreamWebApp.Server",
-      "type": "coreclr",
-      "request": "launch",
-      "preLaunchTask": "Build DataStream WebApp (Debug)",
-      "program": "${workspaceFolder}/build/Debug/bin/net7.0/Bts.DataStreamWebApp.Server.dll",
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/Bts.DataStreamWebApp.Server/Configurations/DevServer.json",
-      ],
-      "env": {
-        "ASPNETCORE_ENVIRONMENT": "Development",
-        "ASPNETCORE_HOSTINGSTARTUPASSEMBLIES": "Microsoft.AspNetCore.SpaProxy",
-      }
-    },
-    {
-      "name": "Bts.DataStreamWebApp.Server (Skip Build)",
-      "type": "coreclr",
-      "request": "launch",
-      "program": "${workspaceFolder}/build/Debug/bin/net7.0/Bts.DataStreamWebApp.Server.dll",
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/Bts.DataStreamWebApp.Server/Configurations/DevServer.json",
-      ],
-      "env": {
-        "ASPNETCORE_ENVIRONMENT": "Development",
-        "ASPNETCORE_HOSTINGSTARTUPASSEMBLIES": "Microsoft.AspNetCore.SpaProxy",
-      }
-    },
-    {
-      "name": "DataStreamPublisher",
-      "type": "coreclr",
-      "request": "launch",
-      "preLaunchTask": "Build DataStream (Debug)",
-      "program": "",
-      "linux": {
-        "program": "DataStreamPublisher",
-      },
-      "windows": {
-        "program": "DataStreamPublisher.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/DataStreamPublisher/Configurations/${input:dataStreamPublisherConfig}.json"
-      ],
-      "cwd": "${workspaceFolder}/build/Debug/bin/net7.0",
-      "stopAtEntry": false,
-      "console": "integratedTerminal"
-    },
-    {
-      "name": "DataStreamPublisher (Skip Build)",
-      "type": "coreclr",
-      "request": "launch",
-      "program": "",
-      "linux": {
-        "program": "DataStreamPublisher",
-      },
-      "windows": {
-        "program": "DataStreamPublisher.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/DataStreamPublisher/Configurations/${input:dataStreamPublisherConfig}.json"
-      ],
-      "cwd": "${workspaceFolder}/build/Debug/bin/net7.0",
-      "stopAtEntry": false,
-      "console": "integratedTerminal"
-    },
-    {
-      "name": "DataStreamQueryAnalyzer",
-      "type": "coreclr",
-      "request": "launch",
-      "preLaunchTask": "Build DataStreamQueryAnalyzer (Debug)",
-      "program": "",
-      "windows": {
-        "program": "DataStreamQueryAnalyzer.exe",
-        "args": [
-          "--config",
-          "${workspaceFolder}/src/DataStreamSuite/DataStreamQueryAnalyzer/Configurations/DataStreamQueryAnalyzer.json"
-        ],
-        "cwd": "build/Debug/bin/net7.0-windows",
-        "env": {
-          "PYTHON_EXE": "${workspaceFolder}/.venv/Scripts/python.exe"
-        },
-      },
-      "stopAtEntry": false,
-      "console": "integratedTerminal",
-    },
-    {
-      "name": "PubSubServer",
-      "type": "coreclr",
-      "request": "launch",
-      "preLaunchTask": "Build DataStream (Debug)",
-      "program": "",
-      "linux": {
-        "program": "PubSubServer",
-      },
-      "windows": {
-        "program": "PubSubServer.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/PubSubServer/Configurations/${input:pubSubServerConfig}.json"
-      ],
-      "cwd": "build/Debug/bin/net7.0",
-      "stopAtEntry": false,
-      "console": "integratedTerminal"
-    },
-    {
-      "name": "PubSubServer (Skip Build)",
-      "type": "coreclr",
-      "request": "launch",
-      "program": "",
-      "linux": {
-        "program": "PubSubServer",
-      },
-      "windows": {
-        "program": "PubSubServer.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/PubSubServer/Configurations/${input:pubSubServerConfig}.json"
-      ],
-      "cwd": "build/Debug/bin/net7.0",
-      "stopAtEntry": false,
-      "console": "integratedTerminal"
-    },
-    {
-      "name": "Spark",
-      "type": "coreclr",
-      "request": "launch",
-      "program": "",
-      "windows": {
-        "preLaunchTask": "Build Spark (Debug)",
-        "program": "Spark.exe",
-        "cwd": "build/Debug/bin/net7.0-windows",
-      },
-      "stopAtEntry": false,
-      "console": "integratedTerminal"
-    },
-    {
-      "name": "Spark (Parameterized)",
-      "type": "coreclr",
-      "request": "launch",
-      "preLaunchTask": "Build Spark (Debug)",
-      "program": "",
-      "windows": {
-        "program": "Spark.exe",
-        "args": [
-          "--sparkd",
-          "${input:sparkConfigServer}"
-        ],
-        "cwd": "build/Debug/bin/net7.0-windows",
-      },
-      "stopAtEntry": false,
-      "console": "integratedTerminal"
-    },
-    {
-      "name": "Sparkd",
-      "type": "coreclr",
-      "request": "launch",
-      "preLaunchTask": "Build Sparkd (Debug | Clang)",
-      "program": "",
-      "linux": {
-        "program": "sparkd",
-      },
-      "args": [
-        "run"
-      ],
-      "cwd": "build/sparkd-debug-clang/server",
-      "stopAtEntry": false,
-      "console": "integratedTerminal"
-    }
-  ],
-  "inputs": [
-    {
-      "id": "dataStreamPublisherConfig",
-      "type": "pickString",
-      "description": "Publisher Configuration",
-      "options": [
-        "MarketDataPublisher",
-        "SimpleEchoClient",
-        "SimpleTestDataPublisher",
-        "TestDataPublisher",
-      ],
-      "default": "MarketDataPublisher",
-    },
-    {
-      "id": "pubSubServerConfig",
-      "type": "pickString",
-      "description": "PubSub Configuration",
-      "options": [
-        "PubSubServer",
-        "SimpleEchoClient",
-      ],
-      "default": "PubSubServer",
-    },
-    {
-      "id": "sparkConfigServer",
-      "type": "promptString",
-      "description": "Config Server URL",
-      "default": "http://localhost:8000/config",
-    },
-  ]
-}
@@ -1,935 +0,0 @@
-{
-  "version": "2.0.0",
-  "tasks": [
-    {
-      "label": "Build Api Server",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "tools/build_api_server.sh",
-      },
-      "windows": {
-        "command": "tools/build_api_server.cmd",
-      },
-      "args": [
-        "--configuration",
-        "${input:buildConfiguration}",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Api Server (Debug)",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "tools/build_api_server.sh",
-      },
-      "windows": {
-        "command": "tools/build_api_server.cmd",
-      },
-      "args": [
-        "--configuration",
-        "Debug",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Api Server (Release)",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "tools/build_api_server.cmd",
-      },
-      "linux": {
-        "command": "tools/build_api_server.sh",
-      },
-      "args": [
-        "--configuration",
-        "Release",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build DataStream",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "tools/build_data_stream.sh",
-      },
-      "windows": {
-        "command": "tools/build_data_stream.cmd",
-      },
-      "args": [
-        "--configuration",
-        "${input:buildConfiguration}",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build DataStream (Debug)",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "tools/build_data_stream.sh",
-      },
-      "windows": {
-        "command": "tools/build_data_stream.cmd",
-      },
-      "args": [
-        "--configuration",
-        "Debug",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build DataStream (Release)",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "tools/build_data_stream.sh",
-      },
-      "windows": {
-        "command": "tools/build_data_stream.cmd",
-      },
-      "args": [
-        "--configuration",
-        "Release",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build DataStreamQueryAnalyzer",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "tools/build_data_stream_query_analyzer.cmd",
-      },
-      "args": [
-        "--configuration",
-        "${input:buildConfiguration}",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build DataStreamQueryAnalyzer (Debug)",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "tools/build_data_stream_query_analyzer.cmd",
-      },
-      "args": [
-        "--configuration",
-        "Debug",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build DataStreamQueryAnalyzer (Release)",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "tools/build_data_stream_query_analyzer.cmd",
-      },
-      "args": [
-        "--configuration",
-        "Release",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build DataStream WebApp",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "tools/build_data_stream_web_app.sh",
-      },
-      "windows": {
-        "command": "tools/build_data_stream_web_app.cmd",
-      },
-      "args": [
-        "--configuration",
-        "${input:buildConfiguration}",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build DataStream WebApp (Debug)",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "tools/build_data_stream_web_app.sh",
-      },
-      "windows": {
-        "command": "tools/build_data_stream_web_app.cmd",
-      },
-      "args": [
-        "--configuration",
-        "Debug",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Spark",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "tools/build_spark.cmd",
-      },
-      "args": [
-        "--configuration",
-        "${input:buildConfiguration}",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Spark (Debug)",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "tools/build_spark.cmd",
-      },
-      "args": [
-        "--configuration",
-        "Debug",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Spark (Release)",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "tools/build_spark.cmd",
-      },
-      "args": [
-        "--configuration",
-        "Release",
-      ],
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Sparkd",
-      "group": "build",
-      "type": "shell",
-      "command": "",
-      "linux": {
-        "command": "tools/build_sparkd.sh",
-        "args": [
-          "--preset",
-          "${input:sparkdCmakePreset}",
-        ],
-      },
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Sparkd (Debug)",
-      "group": "build",
-      "type": "shell",
-      "command": "",
-      "linux": {
-        "command": "tools/build_sparkd.sh",
-        "args": [
-          "--build-type",
-          "Debug",
-          "--compiler",
-          "${input:sparkdCompiler}"
-        ],
-      },
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Sparkd (Debug | Gcc)",
-      "group": "build",
-      "type": "shell",
-      "command": "",
-      "linux": {
-        "command": "tools/build_sparkd.sh",
-        "args": [
-          "--build-type",
-          "Debug",
-          "--compiler",
-          "gcc"
-        ],
-      },
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Sparkd (Debug | Clang)",
-      "group": "build",
-      "type": "shell",
-      "command": "",
-      "linux": {
-        "command": "tools/build_sparkd.sh",
-        "args": [
-          "--build-type",
-          "Debug",
-          "--compiler",
-          "clang"
-        ],
-      },
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Sparkd (Release)",
-      "group": "build",
-      "type": "shell",
-      "command": "",
-      "linux": {
-        "command": "tools/build_sparkd.sh",
-        "args": [
-          "--build-type",
-          "Release",
-          "--compiler",
-          "${input:sparkdCompiler}"
-        ],
-      },
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Sparkd (Release | Gcc)",
-      "group": "build",
-      "type": "shell",
-      "command": "",
-      "linux": {
-        "command": "tools/build_sparkd.sh",
-        "args": [
-          "--build-type",
-          "Release",
-          "--compiler",
-          "gcc"
-        ],
-      },
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Build Sparkd (Release | Clang)",
-      "group": "build",
-      "type": "shell",
-      "command": "",
-      "linux": {
-        "command": "tools/build_sparkd.sh",
-        "args": [
-          "--build-type",
-          "Release",
-          "--compiler",
-          "clang"
-        ],
-      },
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Publish DataStreamWebApp",
-      "group": "build",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "tools/publish_data_stream_web_app.sh",
-      },
-      "windows": {
-        "command": "tools/publish_data_stream_web_app.cmd",
-      },
-      "icon": {
-        "id": "terminal",
-        "color": "terminal.ansiCyan"
-      },
-    },
-    {
-      "label": "Edit DataStream Config",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "editor",
-        "args": [
-          "${env:HOME}/.local/share/DataStream/conf/spark.conf"
-        ],
-      },
-      "windows": {
-        "command": "vim",
-        "args": [
-          "${env:APPDATA}/bts/DataStream/conf/spark.conf"
-        ],
-      },
-      "presentation": {
-        "reveal": "always",
-        "focus": true,
-        "panel": "shared",
-        "showReuseMessage": false,
-        "close": true,
-      },
-      "icon": {
-        "id": "wrench"
-      },
-    },
-    {
-      "label": "Edit Spark Config",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "vim",
-        "args": [
-          "${env:APPDATA}/bts/conf/spark.conf"
-        ],
-      },
-      "presentation": {
-        "reveal": "always",
-        "focus": true,
-        "panel": "dedicated",
-        "showReuseMessage": false,
-        "close": true,
-      },
-      "icon": {
-        "id": "wrench"
-      },
-    },
-    {
-      "label": "Run DataStreamQueryAnalyzer",
-      "dependsOn": "Build DataStreamQueryAnalyzer",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "DataStreamQueryAnalyzer.exe",
-        "args": [
-          "--config",
-          "${workspaceFolder}/src/DataStreamSuite/DataStreamQueryAnalyzer/Configurations/DataStreamQueryAnalyzer.json",
-        ],
-        "options": {
-          "cwd": "${workspaceFolder}/build/${input:buildConfiguration}/bin/net7.0-windows"
-        },
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run DataStreamQueryAnalyzer (Debug)",
-      "dependsOn": "Build DataStreamQueryAnalyzer (Debug)",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "DataStreamQueryAnalyzer.exe",
-        "args": [
-          "--config",
-          "${workspaceFolder}/src/DataStreamSuite/DataStreamQueryAnalyzer/Configurations/DataStreamQueryAnalyzer.json",
-        ],
-        "options": {
-          "cwd": "${workspaceFolder}/build/Debug/bin/net7.0-windows"
-        },
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run DataStreamQueryAnalyzer (Release)",
-      "dependsOn": "Build DataStreamQueryAnalyzer (Release)",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "DataStreamQueryAnalyzer.exe",
-        "args": [
-          "--config",
-          "${workspaceFolder}/src/DataStreamSuite/DataStreamQueryAnalyzer/Configurations/DataStreamQueryAnalyzer.json",
-        ],
-        "options": {
-          "cwd": "${workspaceFolder}/build/Release/bin/net7.0-windows"
-        },
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run DataStreamPublisher",
-      "dependsOn": "Build DataStream",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "DataStreamPublisher",
-      },
-      "windows": {
-        "command": "DataStreamPublisher.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/DataStreamPublisher/Configurations/${input:dataStreamPublisherConfig}.json",
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/${input:buildConfiguration}/bin/net7.0"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run DataStreamPublisher (Debug)",
-      "dependsOn": "Build DataStream (Debug)",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "DataStreamPublisher",
-      },
-      "windows": {
-        "command": "DataStreamPublisher.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/DataStreamPublisher/Configurations/${input:dataStreamPublisherConfig}.json",
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/Debug/bin/net7.0"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run DataStreamPublisher (Release)",
-      "dependsOn": "Build DataStream (Release)",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "DataStreamPublisher",
-      },
-      "windows": {
-        "command": "DataStreamPublisher.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/DataStreamPublisher/Configurations/${input:dataStreamPublisherConfig}.json",
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/Release/bin/net7.0"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run PubSubServer",
-      "dependsOn": "Build DataStream",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "PubSubServer",
-      },
-      "windows": {
-        "command": "PubSubServer.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/PubSubServer/Configurations/${input:pubSubServerConfig}.json",
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/${input:buildConfiguration}/bin/net7.0"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run PubSubServer (Debug)",
-      "dependsOn": "Build DataStream (Debug)",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "PubSubServer",
-      },
-      "windows": {
-        "command": "PubSubServer.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/PubSubServer/Configurations/${input:pubSubServerConfig}.json",
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/Debug/bin/net7.0"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run PubSubServer (Debug | Skip Build)",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "PubSubServer",
-      },
-      "windows": {
-        "command": "PubSubServer.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/PubSubServer/Configurations/${input:pubSubServerConfig}.json",
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/Debug/bin/net7.0"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run PubSubServer (Release)",
-      "dependsOn": "Build DataStream (Release)",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "PubSubServer",
-      },
-      "windows": {
-        "command": "PubSubServer.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/PubSubServer/Configurations/${input:pubSubServerConfig}.json",
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/Release/bin/net7.0"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run PubSubServer (Release | Skip Build)",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "PubSubServer",
-      },
-      "windows": {
-        "command": "PubSubServer.exe",
-      },
-      "args": [
-        "--config",
-        "${workspaceFolder}/src/DataStreamSuite/PubSubServer/Configurations/${input:pubSubServerConfig}.json",
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/Release/bin/net7.0"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run Spark",
-      "dependsOn": "Build Spark",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "Spark.exe",
-        "options": {
-          "cwd": "${workspaceFolder}/build/${input:buildConfiguration}/bin/net7.0-windows"
-        },
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      }
-    },
-    {
-      "label": "Run Spark (Debug)",
-      "dependsOn": "Build Spark (Debug)",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "Spark.exe",
-        "options": {
-          "cwd": "${workspaceFolder}/build/Debug/bin/net7.0-windows"
-        },
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      }
-    },
-    {
-      "label": "Run Spark (Release)",
-      "dependsOn": "Build Spark (Release)",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "Spark.exe",
-        "options": {
-          "cwd": "${workspaceFolder}/build/Release/bin/net7.0-windows"
-        },
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      }
-    },
-    {
-      "label": "Run Spark Config Query",
-      "dependsOn": "Build Spark",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "Spark.Console",
-      },
-      "windows": {
-        "command": "Spark.Console.exe",
-      },
-      "args": [
-        "config",
-        "--query",
-        "${input:sparkConfigQuery}",
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/${input:buildConfiguration}/bin/net7.0"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run Sparkd",
-      "dependsOn": "Build Sparkd",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "sparkd",
-      },
-      "args": [
-        "run"
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/${input:sparkdCmakePreset}/server"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "Run Sparkd Config Query",
-      "dependsOn": "Build Sparkd",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "sparkd",
-      },
-      "args": [
-        "config",
-        "--query",
-        "${input:sparkdConfigQuery}",
-      ],
-      "options": {
-        "cwd": "${workspaceFolder}/build/${input:sparkdCompiler}/${input:sparkdBuildType}/server"
-      },
-      "icon": {
-        "id": "run",
-        "color": "terminal.ansiGreen",
-      },
-    },
-    {
-      "label": "View DataStreamQueryAnalyzer Logs (Last Run)",
-      "type": "process",
-      "command": "",
-      "windows": {
-        "command": "tools/logging/show_last_run.cmd",
-        "args": [
-          "DataStream",
-          "DataStreamQueryAnalyzer.exe",
-          "'Starting DataStreamQueryAnalyzer'"
-        ]
-      },
-      "presentation": {
-        "reveal": "always",
-        "focus": true,
-        "panel": "shared",
-        "showReuseMessage": false,
-        "close": true,
-      },
-      "icon": {
-        "id": "wrench"
-      },
-    },
-    {
-      "label": "View PubSubServer Logs (Last Run)",
-      "type": "process",
-      "command": "",
-      "linux": {
-        "command": "tools/logging/show_last_run.sh",
-        "args": [
-          "${env:HOME}/.local/share/DataStream/data/logging.PubSubServer",
-          "Starting PubSubServer"
-        ]
-      },
-      "windows": {
-        "command": "tools/logging/show_last_run.cmd",
-        "args": [
-          "DataStream",
-          "PubSubServer.exe",
-          "Starting PubSubServer"
-        ]
-      },
-      "presentation": {
-        "reveal": "always",
-        "focus": true,
-        "panel": "shared",
-        "showReuseMessage": false,
-        "close": true,
-      },
-      "icon": {
-        "id": "wrench"
-      },
-    },
-  ],
-  "inputs": [
-    {
-      "id": "buildConfiguration",
-      "type": "pickString",
-      "description": "Configuration",
-      "options": [
-        "Debug",
-        "Release",
-      ],
-      "default": "Debug",
-    },
-    {
-      "id": "sparkdCmakePreset",
-      "type": "pickString",
-      "description": "Configuration",
-      "options": [
-        "sparkd-debug-clang",
-        "sparkd-debug-gcc",
-        "sparkd-release-clang",
-        "sparkd-release-gcc",
-      ],
-      "default": "sparkd-debug-clang",
-    },
-    {
-      "id": "sparkdCompiler",
-      "type": "pickString",
-      "description": "Configuration",
-      "options": [
-        "clang",
-        "gcc",
-      ],
-      "default": "sparkd-debug-clang",
-    },
-    {
-      "id": "dataStreamPublisherConfig",
-      "type": "pickString",
-      "description": "Publisher Configuration",
-      "options": [
-        "MarketDataPublisher",
-        "SimpleEchoClient",
-        "SimpleTestDataPublisher",
-        "TestDataPublisher",
-      ],
-      "default": "MarketDataPublisher",
-    },
-    {
-      "id": "pubSubServerConfig",
-      "type": "pickString",
-      "description": "PubSub Configuration",
-      "options": [
-        "PubSubServer",
-        "SimpleEchoClient",
-      ],
-      "default": "PubSubServer",
-    },
-    {
-      "id": "sparkConfigQuery",
-      "type": "promptString",
-      "description": "Config Type(s)"
-    },
-    {
-      "id": "sparkdConfigQuery",
-      "type": "promptString",
-      "description": "Config Type(s)"
-    }
-  ]
-}
@@ -1,6 +1,5 @@
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.5)
 project(spark)
-set(CMAKE_CXX_STANDARD 20)

 if(WIN32)
  set(platform "windows")
@@ -8,148 +7,88 @@ else()
  set(platform "linux")
 endif()

-set(
-  EXTERNALS_ROOT
-  "${CMAKE_SOURCE_DIR}/externals/${platform}"
-  CACHE
-  STRING
-  "External dependencies root folder (should contain folders: lib, bin, include")
-
-# SHARED_MEMORY_PREFIX serves as a kind of namespace so multiple applications
-# can run simultaneously without fighting over the same shm files (e.g., sparkd,
-# api server, etc.).
-set(SHARED_MEMORY_PREFIX "bts" CACHE STRING "Prefix to use when creating shared memory files")
+set(EXTERNALS_ROOT "${CMAKE_SOURCE_DIR}/externals/${platform}")
+set(SPARK_PYTHON "${EXTERNALS_ROOT}/python")
 set(SPARK_BIN "${EXTERNALS_ROOT}/bin")
 set(SPARK_INCLUDE "${EXTERNALS_ROOT}/include")
-set(SPARK_LIB "${EXTERNALS_ROOT}/lib/$<CONFIG>")
-set(BUILD_DOCS OFF CACHE BOOL "Build documentation")
+set(SPARK_LIB "${EXTERNALS_ROOT}/lib/${CMAKE_BUILD_TYPE}")
 set(BUILD_SDK OFF CACHE BOOL "Build the sdk")
-set(EXPORT_MD_CONSUMER OFF CACHE BOOL "Export (extern) C functions for MD consumer interop")
-if (WIN32)
-  set(BUILD_SPARKD OFF CACHE BOOL "Build sparkd")
-  set(BUILD_ADMIN_WEB_APP OFF CACHE BOOL "Build the Admin WebApp")
-else()
-  set(BUILD_SPARKD ON CACHE BOOL "Build sparkd")
-  set(BUILD_ADMIN_WEB_APP ON CACHE BOOL "Build the Admin WebApp")
-endif()

 include_directories(BEFORE SYSTEM ${SPARK_INCLUDE} ${EXTERNALS_ROOT}/include/zlib)
 link_directories(${SPARK_LIB})

-add_compile_definitions(SHARED_MEMORY_PREFIX="${SHARED_MEMORY_PREFIX}")
-add_compile_definitions(APP_DATA_DIR="${APP_DATA_DIR}")
-if(DEFINED APP_DATA_DIR_OVERRIDE)
-  add_compile_definitions(APP_DATA_DIR_OVERRIDE="${APP_DATA_DIR_OVERRIDE}")
-endif()
-add_compile_definitions(EXPORT_MD_CONSUMER="${EXPORT_MD_CONSUMER}")
 if(WIN32)
+  # flags
+  set(
+    CMAKE_CXX_FLAGS
+    "${CMAKE_CXX_FLAGS} \
+    /MP \
+    /WX /wd4251 /wd4250 /wd4251 /wd4244 /wd4267 /wd4355 /wd4275 /wd4345 \
+    /bigobj \
+    /DCURL_STATICLIB \
+    /D_WINSOCK_DEPRECATED_NO_WARNINGS \
+    /D__TBB_NO_IMPLICIT_LINKAGE \
+    /DBOOST_ALL_NO_LIB \
+    /std:c++17 \
+    /D_SCL_SECURE_NO_WARNINGS /D_CRT_SECURE_NO_WARNINGS /D_WIN32_WINNT=0x0600")
+  set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MTd")
+  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_DEBUG} /MT")
+  set(
+    CMAKE_SHARED_LINKER_FLAGS_RELEASE
+    "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} \
+    /DEBUG \
+    /OPT:REF \
+    /OPT:ICF \
+    /LTCG")
+
  # subdirs
  add_subdirectory(src/lib)
 else()
  # make sparkd look for libspark.so in its directory
  set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
  set(CMAKE_INSTALL_RPATH ".")
-  set(CMAKE_INSTALL_PREFIX "${CMAKE_SOURCE_DIR}/install")
-  set(SPARK_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}/$<CONFIG>")

-  if(BUILD_SPARKD)
-    # Note: All macros that begin w/ 'CCAPI' are ccapi's macros (defined and/or
-    # read by their code). We override some below.
-    add_compile_definitions(SPARK_ENABLE_CCAPI)
-
-    # This allows us to override hardcoded exchange-urls with ones read from
-    # config (i.e., resolved at runtime rather than compile-time)
-    add_compile_definitions(CCAPI_EXPOSE_INTERNAL)
-
-    # Enable ccapi services
-    add_compile_definitions(CCAPI_ENABLE_SERVICE_MARKET_DATA)
-    add_compile_definitions(CCAPI_ENABLE_SERVICE_EXECUTION_MANAGEMENT)
-    # Enable ccapi exchanges
-    add_compile_definitions(CCAPI_ENABLE_EXCHANGE_BINANCE)
-    add_compile_definitions(CCAPI_ENABLE_EXCHANGE_BINANCE_COIN_FUTURES)
-    add_compile_definitions(CCAPI_ENABLE_EXCHANGE_BINANCE_US)
-    add_compile_definitions(CCAPI_ENABLE_EXCHANGE_BINANCE_USDS_FUTURES)
-    add_compile_definitions(CCAPI_ENABLE_EXCHANGE_COINBASE)
-    add_compile_definitions(CCAPI_ENABLE_EXCHANGE_DERIBIT)
-    add_compile_definitions(CCAPI_ENABLE_EXCHANGE_OKX)
-
-    set(CCAPI_LOG_LEVEL
-      "Warn"
-      CACHE STRING "<Fatal|Error|Warn|Info|Debug|Trace> Log level for ccapi")
-    string(TOUPPER "${CCAPI_LOG_LEVEL}" _ccapi_log_level_upper)
-    add_compile_definitions("CCAPI_ENABLE_LOG_${_ccapi_log_level_upper}")
-
-    # ** Binance **
-    add_compile_definitions(CCAPI_BINANCE_URL_REST_BASE="https://api.binance.com")
-    add_compile_definitions(BINANCE_INSTRUMENTS_PATH="/api/v3/exchangeInfo")
-    add_compile_definitions(BINANCE_PRICE_STATS_PATH="/api/v3/ticker/24hr")
-
-    # ** Binance US **
-    add_compile_definitions(BINANCE_US_INSTRUMENTS_PATH="/api/v3/exchangeInfo")
-    add_compile_definitions(BINANCE_US_PRICE_STATS_PATH="/api/v3/ticker/24hr")
-
-    # ** Binance USDS Futures **
-    add_compile_definitions(CCAPI_BINANCE_USDS_FUTURES_URL_REST_BASE="https://dapi.binance.com")
-    add_compile_definitions(BINANCE_USDS_FUTURES_INSTRUMENTS_PATH="/dapi/v1/exchangeInfo")
-    add_compile_definitions(BINANCE_USDS_FUTURES_PRICE_STATS_PATH="/dapi/v1/ticker/24hr")
-
-    # ** Deribit **
-    add_compile_definitions(DERIBIT_INSTRUMENT_PATH="/api/v2/public/get_instrument")
-    add_compile_definitions(DERIBIT_INSTRUMENTS_PATH="/api/v2/public/get_instruments")
-    add_compile_definitions(DERIBIT_COMBOS_PATH="/api/v2/public/get_combos")
-    add_compile_definitions(DERIBIT_TICKER_PATH="/api/v2/public/ticker")
-    add_compile_definitions(DERIBIT_CURRENCIES_METHOD="public/get_currencies")
-    add_compile_definitions(DERIBIT_INSTRUMENT_METHOD="public/get_instrument")
-    add_compile_definitions(DERIBIT_INSTRUMENTS_METHOD="public/get_instruments")
-    add_compile_definitions(DERIBIT_COMBO_DETAILS_METHOD="public/get_combo_details")
-    add_compile_definitions(DERIBIT_COMBOS_METHOD="public/get_combos")
-
-    # ** Okx **
-    add_compile_definitions(OKX_INSTRUMENTS_PATH="/api/v5/public/instruments")
-    add_compile_definitions(OKX_UNDERLYING_PATH="/api/v5/public/underlying")
-  endif()
+  # flags
+  set(
+    CMAKE_CXX_FLAGS_DEBUG
+    "${CMAKE_CXX_FLAGS_DEBUG} \
+    -fPIC \
+    -Wall \
+    -pedantic \
+    -Wextra \
+    -Werror \
+    -Wno-missing-braces \
+    -Wno-ignored-qualifiers \
+    --std=c++17 -fdiagnostics-color")
+  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_DEBUG} -fno-omit-frame-pointer -DNDEBUG -O3")
+  set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DDEBUG")
+  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wno-undef")

  # subdirs
-  if (BUILD_SPARKD)
-    add_subdirectory(src/server/sparkd)
-    add_subdirectory(src/data_files)
-  endif()
+  add_subdirectory(src/server/sparkd)
  add_subdirectory(src/lib)
-  if (BUILD_ADMIN_WEB_APP)
-    add_subdirectory(src/Spark.Admin.WebApp)
-  endif()
-  if(BUILD_DOCS)
-    add_subdirectory(doc/user)
-  endif()
+  add_subdirectory(src/web)
+  add_subdirectory(doc/user)
  if(BUILD_SDK)
    add_subdirectory(src/sdk)
  endif()
+  add_subdirectory(src/data_files)

-  if(BUILD_SPARKD)
-    add_custom_command(
-      OUTPUT ${CMAKE_BINARY_DIR}/server
-      COMMAND mkdir -p ${CMAKE_BINARY_DIR}/server
-      COMMAND ln ARGS -sf ${CMAKE_BINARY_DIR}/src/server/sparkd/sparkd ${CMAKE_BINARY_DIR}/server
-      COMMAND ln ARGS -sf ${CMAKE_BINARY_DIR}/data_files ${CMAKE_BINARY_DIR}/server
-      COMMAND ln ARGS -sf ${CMAKE_BINARY_DIR}/src/lib/libspark.so ${CMAKE_BINARY_DIR}/server
-      COMMAND
-        ln ARGS -sf
-        ${EXTERNALS_ROOT}/lib/Release/libOnixS.IceImpactMulticastPriceFeedHandlerCpp.so.3.16.0.0
-        ${CMAKE_BINARY_DIR}/server
-      COMMAND ln ARGS -sf ${EXTERNALS_ROOT}/lib/Release/libACE-5.7.5.so ${CMAKE_BINARY_DIR}/server
-      COMMAND mkdir ARGS -p ${CMAKE_BINARY_DIR}/server/plugins
-      COMMENT "Creating server runtime layout"
-      DEPENDS sparkd data_files_dir)
+  add_custom_command(
+    OUTPUT ${CMAKE_BINARY_DIR}/server
+    COMMAND mkdir -p ${CMAKE_BINARY_DIR}/server
+    COMMAND ln ARGS -sf ${CMAKE_BINARY_DIR}/src/server/sparkd/sparkd ${CMAKE_BINARY_DIR}/server
+    COMMAND ln ARGS -sf ${CMAKE_BINARY_DIR}/web ${CMAKE_BINARY_DIR}/server
+    COMMAND ln ARGS -sf ${CMAKE_BINARY_DIR}/data_files ${CMAKE_BINARY_DIR}/server
+    COMMAND ln ARGS -sf ${CMAKE_BINARY_DIR}/src/lib/libspark.so ${CMAKE_BINARY_DIR}/server
+    COMMAND
+      ln ARGS -sf
+      ${EXTERNALS_ROOT}/lib/Release/libOnixS.IceImpactMulticastPriceFeedHandlerCpp.so.3.16.0.0
+      ${CMAKE_BINARY_DIR}/server
+    COMMAND ln ARGS -sf ${EXTERNALS_ROOT}/lib/Release/libACE-5.7.5.so ${CMAKE_BINARY_DIR}/server
+    COMMAND mkdir ARGS -p ${CMAKE_BINARY_DIR}/server/plugins
+    COMMENT "Creating server runtime layout"
+    DEPENDS sparkd data_files_dir)

-    add_custom_target(server_layout ALL DEPENDS ${CMAKE_BINARY_DIR}/server)
-
-    install(
-      DIRECTORY "${CMAKE_BINARY_DIR}/server/plugins"
-      DESTINATION "${SPARK_INSTALL_PREFIX}/bin")
-    install(
-      FILES
-      "${SPARK_LIB}/libACE-5.7.5.so"
-      "${SPARK_LIB}/libOnixS.IceImpactMulticastPriceFeedHandlerCpp.so.3.16.0.0"
-      DESTINATION "${SPARK_INSTALL_PREFIX}/bin")
-  endif()
+  add_custom_target(server_layout ALL DEPENDS ${CMAKE_BINARY_DIR}/server)
 endif()
@@ -1,438 +0,0 @@
-{
-  "version": 4,
-  "cmakeMinimumRequired": {
-    "major": 3,
-    "minor": 23,
-    "patch": 0
-  },
-
-  "configurePresets": [
-    {
-      "name": "spark",
-      "condition": {
-        "type": "equals",
-        "lhs": "${hostSystemName}",
-        "rhs": "Windows"
-      },
-      "generator": "Visual Studio 17 2022",
-      "binaryDir": "${sourceDir}/build/${presetName}",
-      "environment": {
-        "SPARK_CMAKE_CXX_FLAGS": "/MP /WX /wd4250 /wd4251 /wd4244 /wd4267 /wd4355 /wd4275 /wd4345 /bigobj /EHsc /DCURL_STATICLIB /D_WINSOCK_DEPRECATED_NO_WARNINGS /D__TBB_NO_IMPLICIT_LINKAGE /DBOOST_ALL_NO_LIB /std:c++20 /D_SCL_SECURE_NO_WARNINGS /D_CRT_SECURE_NO_WARNINGS /D_WIN32_WINNT=0x0600"
-      },
-      "cacheVariables": {
-        "APP_DATA_DIR": "${dollar}{APPDATA}/bts",
-        "APP_DATA_DIR_OVERRIDE": "${dollar}{SPARK_DATA_DIR}",
-        "CMAKE_CXX_FLAGS": "$env{SPARK_CMAKE_CXX_FLAGS}",
-        "CMAKE_CXX_FLAGS_DEBUG": "$env{SPARK_CMAKE_CXX_FLAGS} /MTd",
-        "CMAKE_CXX_FLAGS_RELEASE": "$env{SPARK_CMAKE_CXX_FLAGS} /MT",
-        "CMAKE_CXX_STANDARD": "20",
-        "CMAKE_SHARED_LINKER_FLAGS_DEBUG": "/DEBUG",
-        "CMAKE_SHARED_LINKER_FLAGS_RELEASE": "/OPT:REF /OPT:ICF /LTCG",
-        "CMAKE_TOOLCHAIN_FILE": "${sourceDir}/vcpkg/scripts/buildsystems/vcpkg.cmake",
-        "EXTERNALS_ROOT": "${sourceDir}/externals/windows",
-        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf",
-        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net7.0;${sourceDir}/build/$<CONFIG>/bin/net7.0-windows",
-        "EXPORT_MD_CONSUMER": {
-          "type": "BOOL",
-          "value": "ON"
-        },
-        "SHARED_MEMORY_PREFIX": "spark"
-      }
-    },
-
-    {
-      "name": "sparkd",
-      "condition": {
-        "type": "equals",
-        "lhs": "${hostSystemName}",
-        "rhs": "Linux"
-      },
-      "hidden": true,
-      "generator": "Ninja",
-      "binaryDir": "${sourceDir}/build/${presetName}",
-      "cacheVariables": {
-        "platform": "",
-        "APP_DATA_DIR": "${dollar}{HOME}/sparkdata",
-        "APP_DATA_DIR_OVERRIDE": "${dollar}{SPARKD_DATA_DIR}",
-        "CMAKE_BUILD_WITH_INSTALL_RPATH": {
-          "type": "BOOL",
-          "value": "ON"
-        },
-        "CMAKE_CXX_STANDARD": "20",
-        "CMAKE_INSTALL_RPATH": ".",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}/sparkd",
-        "CMAKE_EXE_LINKER_FLAGS": "-Wno-undef",
-        "EXTERNALS_ROOT": "${sourceDir}/externals/linux",
-        "BUILD_SDK": {
-          "type": "BOOL",
-          "value": "OFF"
-        },
-        "BUILD_ADMIN_WEB_APP": {
-          "type": "BOOL",
-          "value": "ON"
-        },
-        "SHARED_MEMORY_PREFIX": "sparkd"
-      }
-    },
-
-    {
-      "name": "sparkd-debug",
-      "inherits": "sparkd",
-      "hidden": true,
-      "cacheVariables": {
-        "CMAKE_BUILD_TYPE": "Debug",
-        "CMAKE_EXPORT_COMPILE_COMMANDS": {
-          "type": "BOOL",
-          "value": "ON"
-        },
-        "CCAPI_LOG_LEVEL": "Info",
-        "CONFIG_DEFAULTS_PATH": "config/profiles/md_dev/*.conf;config/profiles/default/*.conf"
-      }
-    },
-
-    {
-      "name": "sparkd-release",
-      "inherits": "sparkd",
-      "hidden": true,
-      "cacheVariables": {
-        "CMAKE_BUILD_TYPE": "Release",
-        "CCAPI_LOG_LEVEL": "Warn",
-        "CONFIG_DEFAULTS_PATH": "config/profiles/md_prod/*.conf;config/profiles/default/*.conf"
-      }
-    },
-
-    {
-      "name": "sparkd-debug-clang",
-      "inherits": "sparkd-debug",
-      "displayName": "Sparkd (Debug | Clang)",
-      "description": "Debug build compiled w/ clang",
-      "cacheVariables": {
-        "CMAKE_C_COMPILER": "clang",
-        "CMAKE_CXX_COMPILER": "clang++",
-        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -DDEBUG"
-      }
-    },
-
-    {
-      "name": "sparkd-debug-gcc",
-      "inherits": "sparkd-debug",
-      "displayName": "Sparkd (Debug | Gcc)",
-      "description": "Debug build compiled w/ gcc",
-      "cacheVariables": {
-        "CMAKE_C_COMPILER": "gcc",
-        "CMAKE_CXX_COMPILER": "g++",
-        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -Wno-stringop-overread -DDEBUG"
-      }
-    },
-
-    {
-      "name": "sparkd-release-clang",
-      "inherits": "sparkd-release",
-      "displayName": "Sparkd (Release | Clang)",
-      "description": "Release build compiled w/ clang",
-      "cacheVariables": {
-        "CMAKE_C_COMPILER": "clang",
-        "CMAKE_CXX_COMPILER": "clang++",
-        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3"
-      }
-    },
-
-    {
-      "name": "sparkd-release-gcc",
-      "inherits": "sparkd-release",
-      "displayName": "Sparkd (Release | Gcc)",
-      "description": "Release build compiled w/ gcc",
-      "cacheVariables": {
-        "CMAKE_C_COMPILER": "gcc",
-        "CMAKE_CXX_COMPILER": "g++",
-        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers -Wno-stringop-overflow --std=c++20 -fdiagnostics-color -Wno-stringop-overread -Wno-maybe-uninitialized -fno-omit-frame-pointer -DNDEBUG -O3"
-      }
-    },
-
-    {
-      "name": "spark-api-server-windows",
-      "inherits": "spark",
-      "displayName": "Spark Api Server (Windows)",
-      "cacheVariables": {
-        "APP_DATA_DIR_OVERRIDE": "${dollar}{SPARK_API_SERVER_DATA_DIR}",
-        "SHARED_MEMORY_PREFIX": "spark_api_server"
-      }
-    },
-
-    {
-      "name": "spark-api-server-linux",
-      "inherits": "sparkd",
-      "displayName": "Spark Api Server (Linux)",
-      "generator": "Ninja Multi-Config",
-      "cacheVariables": {
-        "APP_DATA_DIR_OVERRIDE": "${dollar}{SPARK_API_SERVER_DATA_DIR}",
-        "BUILD_ADMIN_WEB_APP": {
-          "type": "BOOL",
-          "value": "OFF"
-        },
-        "BUILD_SPARKD": {
-          "type": "BOOL",
-          "value": "OFF"
-        },
-        "CMAKE_C_COMPILER": "clang",
-        "CMAKE_CXX_COMPILER": "clang++",
-        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -DDEBUG",
-        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}",
-        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf",
-        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net7.0",
-        "EXPORT_MD_CONSUMER": {
-          "type": "BOOL",
-          "value": "ON"
-        }
-      }
-    },
-
-    {
-      "name": "sparkd-publish",
-      "inherits": "sparkd-release-gcc",
-      "displayName": "Publish",
-      "description": "Production build compiled w/ gcc and ready to ship"
-    },
-
-    {
-      "name": "sparkd-ccapi-diag",
-      "inherits": "sparkd-debug-clang",
-      "displayName": "Debug (ccapi diag)",
-      "description": "Debug build w/ ccapi log level 'Trace'",
-      "binaryDir": "${sourceDir}/build/${presetName}",
-      "cacheVariables": {
-        "CCAPI_LOG_LEVEL": "Trace"
-      }
-    },
-
-    {
-      "name": "data-stream-suite-windows",
-      "condition": {
-        "type": "equals",
-        "lhs": "${hostSystemName}",
-        "rhs": "Windows"
-      },
-      "inherits": "spark",
-      "displayName": "Data Stream Suite (Windows)",
-      "description": "Data Stream utils ported over from Edge",
-      "binaryDir": "${sourceDir}/build/${presetName}",
-      "cacheVariables": {
-        "APP_DATA_DIR": "${dollar}{APPDATA}/bts/DataStream",
-        "APP_DATA_DIR_OVERRIDE": "${dollar}{DATA_STREAM_DATA_DIR}",
-        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf;config/profiles/data_stream/*.conf",
-        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net7.0;${sourceDir}/build/$<CONFIG>/bin/net7.0-windows;${sourceDir}/build/$<CONFIG>/bin/net8.0",
-        "SHARED_MEMORY_PREFIX": "data_stream"
-      }
-    },
-
-    {
-      "name": "data-stream-suite-linux",
-      "displayName": "Data Stream Suite (Linux)",
-      "description": "Data Stream utils ported over from Edge",
-      "condition": {
-        "type": "equals",
-        "lhs": "${hostSystemName}",
-        "rhs": "Linux"
-      },
-      "inherits": "sparkd",
-      "generator": "Ninja Multi-Config",
-      "cacheVariables": {
-        "APP_DATA_DIR": "${dollar}{HOME}/.local/share/DataStream",
-        "APP_DATA_DIR_OVERRIDE": "${dollar}{DATA_STREAM_DATA_DIR}",
-        "BUILD_ADMIN_WEB_APP": {
-          "type": "BOOL",
-          "value": "OFF"
-        },
-        "BUILD_SDK": {
-          "type": "BOOL",
-          "value": "OFF"
-        },
-        "BUILD_SPARKD": {
-          "type": "BOOL",
-          "value": "OFF"
-        },
-        "CMAKE_C_COMPILER": "clang",
-        "CMAKE_CXX_COMPILER": "clang++",
-        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -DDEBUG",
-        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}",
-        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf;config/profiles/data_stream/*.conf",
-        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net7.0;${sourceDir}/build/$<CONFIG>/bin/net8.0",
-        "EXPORT_MD_CONSUMER": {
-          "type": "BOOL",
-          "value": "ON"
-        },
-        "SHARED_MEMORY_PREFIX": "data_stream"
-      }
-    }
-  ],
-
-  "buildPresets": [
-    {
-      "name": "spark",
-      "condition": {
-        "type": "equals",
-        "lhs": "${hostSystemName}",
-        "rhs": "Windows"
-      },
-      "hidden": true
-    },
-
-    {
-      "name": "spark-debug",
-      "displayName": "Spark (Debug)",
-      "inherits": "spark",
-      "configurePreset": "spark",
-      "configuration": "Debug"
-    },
-
-    {
-      "name": "spark-release",
-      "displayName": "Spark (Release)",
-      "inherits": "spark",
-      "configurePreset": "spark",
-      "configuration": "Release"
-    },
-
-    {
-      "name": "sparkd",
-      "condition": {
-        "type": "equals",
-        "lhs": "${hostSystemName}",
-        "rhs": "Linux"
-      },
-      "hidden": true,
-      "targets": [
-        "data_files_dir",
-        "admin_web_app_bundle",
-        "install",
-        "libspark",
-        "rapidjson_project",
-        "server_layout",
-        "sparkd"
-      ]
-    },
-
-    {
-      "name": "sparkd-debug-clang",
-      "configurePreset": "sparkd-debug-clang",
-      "displayName": "Sparkd (Debug | Clang)",
-      "inherits": "sparkd"
-    },
-
-    {
-      "name": "sparkd-debug-gcc",
-      "configurePreset": "sparkd-debug-gcc",
-      "displayName": "Sparkd (Debug | Gcc)",
-      "inherits": "sparkd"
-    },
-
-    {
-      "name": "sparkd-release-clang",
-      "configurePreset": "sparkd-release-clang",
-      "displayName": "Sparkd (Release | Clang)",
-      "inherits": "sparkd"
-    },
-
-    {
-      "name": "sparkd-release-gcc",
-      "configurePreset": "sparkd-release-gcc",
-      "displayName": "Sparkd (Release | Gcc)",
-      "inherits": "sparkd"
-    },
-
-    {
-      "name": "spark-api-server-windows",
-      "condition": {
-        "type": "equals",
-        "lhs": "${hostSystemName}",
-        "rhs": "Windows"
-      },
-      "hidden": true,
-      "configurePreset": "spark-api-server-windows"
-    },
-
-    {
-      "name": "spark-api-server-windows-debug",
-      "displayName": "Spark Api Server (Windows | Debug)",
-      "inherits": "spark-api-server-windows",
-      "configuration": "Debug"
-    },
-
-    {
-      "name": "spark-api-server-windows-release",
-      "displayName": "Spark Api Server (Windows | Release)",
-      "inherits": "spark-api-server-windows",
-      "configuration": "Release"
-    },
-
-    {
-      "name": "spark-api-server-linux",
-      "condition": {
-        "type": "equals",
-        "lhs": "${hostSystemName}",
-        "rhs": "Linux"
-      },
-      "hidden": true,
-      "configurePreset": "spark-api-server-linux"
-    },
-
-    {
-      "name": "spark-api-server-linux-debug",
-      "inherits": "spark-api-server-linux",
-      "displayName": "Spark Api Server (Linux | Debug)",
-      "configuration": "Debug"
-    },
-
-    {
-      "name": "spark-api-server-linux-release",
-      "inherits": "spark-api-server-linux",
-      "displayName": "Spark Api Server (Linux | Release)",
-      "configuration": "Release"
-    },
-
-    {
-      "name": "sparkd-publish",
-      "configurePreset": "sparkd-publish",
-      "displayName": "Publish",
-      "inherits": "sparkd",
-      "targets": "install"
-    },
-
-    {
-      "name": "sparkd-ccapi-diag",
-      "configurePreset": "sparkd-ccapi-diag",
-      "displayName": "Debug (ccapi diag)",
-      "inherits": "sparkd"
-    },
-
-    {
-      "name": "data-stream-suite-windows-debug",
-      "displayName": "Data Stream Suite (Windows | Debug)",
-      "configurePreset": "data-stream-suite-windows",
-      "configuration": "Debug"
-    },
-
-    {
-      "name": "data-stream-suite-windows-release",
-      "displayName": "Data Stream Suite (Windows | Release)",
-      "configurePreset": "data-stream-suite-windows",
-      "configuration": "Release"
-    },
-
-    {
-      "name": "data-stream-suite-linux-debug",
-      "displayName": "Data Stream Suite (Linux | Debug)",
-      "configurePreset": "data-stream-suite-linux",
-      "configuration": "Debug"
-    },
-
-    {
-      "name": "data-stream-suite-linux-release",
-      "displayName": "Data Stream Suite (Linux | Release)",
-      "configurePreset": "data-stream-suite-linux",
-      "configuration": "Release"
-    }
-  ]
-}
@@ -1,83 +0,0 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.3.32922.545
-MinimumVisualStudioVersion = 15.0.26124.0
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_api", "src\client\spark_api\spark_api.csproj", "{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_core", "src\client\spark_core\spark_core.csproj", "{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_websocket", "src\client\spark_websocket\spark_websocket.csproj", "{3201359D-C071-4089-9EDE-B04D759F1508}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_api_server", "src\client\spark_api_server\spark_api_server.csproj", "{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "spark_test", "src\client\spark_test\spark_test.csproj", "{EFC9FC4D-E92B-4C6D-9B97-26D38EAA118D}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Spark.Console", "src\client\Spark.Console\Spark.Console.csproj", "{89D666E6-B500-498F-B026-4D167F68ADFC}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|x64 = Debug|x64
-		MinSizeRel|x64 = MinSizeRel|x64
-		Release|x64 = Release|x64
-		RelWithDebInfo|x64 = RelWithDebInfo|x64
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Debug|x64.ActiveCfg = Debug|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Debug|x64.Build.0 = Debug|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.MinSizeRel|x64.ActiveCfg = Release|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.MinSizeRel|x64.Build.0 = Release|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Release|x64.ActiveCfg = Release|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Release|x64.Build.0 = Release|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Debug|x64.ActiveCfg = Debug|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Debug|x64.Build.0 = Debug|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.MinSizeRel|x64.ActiveCfg = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.MinSizeRel|x64.Build.0 = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Release|x64.ActiveCfg = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Release|x64.Build.0 = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Debug|x64.ActiveCfg = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Debug|x64.Build.0 = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.MinSizeRel|x64.ActiveCfg = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.MinSizeRel|x64.Build.0 = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Release|x64.ActiveCfg = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Release|x64.Build.0 = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Debug|x64.ActiveCfg = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Debug|x64.Build.0 = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.MinSizeRel|x64.ActiveCfg = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.MinSizeRel|x64.Build.0 = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Release|x64.ActiveCfg = Release|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Release|x64.Build.0 = Release|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{EFC9FC4D-E92B-4C6D-9B97-26D38EAA118D}.Debug|x64.ActiveCfg = Debug|x64
-		{EFC9FC4D-E92B-4C6D-9B97-26D38EAA118D}.Debug|x64.Build.0 = Debug|x64
-		{EFC9FC4D-E92B-4C6D-9B97-26D38EAA118D}.MinSizeRel|x64.ActiveCfg = Debug|x64
-		{EFC9FC4D-E92B-4C6D-9B97-26D38EAA118D}.MinSizeRel|x64.Build.0 = Debug|x64
-		{EFC9FC4D-E92B-4C6D-9B97-26D38EAA118D}.Release|x64.ActiveCfg = Release|x64
-		{EFC9FC4D-E92B-4C6D-9B97-26D38EAA118D}.Release|x64.Build.0 = Release|x64
-		{EFC9FC4D-E92B-4C6D-9B97-26D38EAA118D}.RelWithDebInfo|x64.ActiveCfg = Debug|x64
-		{EFC9FC4D-E92B-4C6D-9B97-26D38EAA118D}.RelWithDebInfo|x64.Build.0 = Debug|x64
-		{89D666E6-B500-498F-B026-4D167F68ADFC}.Debug|x64.ActiveCfg = Debug|x64
-		{89D666E6-B500-498F-B026-4D167F68ADFC}.Debug|x64.Build.0 = Debug|x64
-		{89D666E6-B500-498F-B026-4D167F68ADFC}.MinSizeRel|x64.ActiveCfg = Debug|x64
-		{89D666E6-B500-498F-B026-4D167F68ADFC}.MinSizeRel|x64.Build.0 = Debug|x64
-		{89D666E6-B500-498F-B026-4D167F68ADFC}.Release|x64.ActiveCfg = Release|x64
-		{89D666E6-B500-498F-B026-4D167F68ADFC}.Release|x64.Build.0 = Release|x64
-		{89D666E6-B500-498F-B026-4D167F68ADFC}.RelWithDebInfo|x64.ActiveCfg = Debug|x64
-		{89D666E6-B500-498F-B026-4D167F68ADFC}.RelWithDebInfo|x64.Build.0 = Debug|x64
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {422D1620-0166-4C26-9A81-CA8A2EB1AB58}
-	EndGlobalSection
-	GlobalSection(Performance) = preSolution
-		HasPerformanceSessions = true
-	EndGlobalSection
-EndGlobal
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.2.32630.192
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SpreaderFrontEnd", "SpreaderFrontEnd\SpreaderFrontEnd.csproj", "{28EE9ABE-BBA6-4587-8BEB-3B0CD979ED22}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{28EE9ABE-BBA6-4587-8BEB-3B0CD979ED22}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{28EE9ABE-BBA6-4587-8BEB-3B0CD979ED22}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{28EE9ABE-BBA6-4587-8BEB-3B0CD979ED22}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{28EE9ABE-BBA6-4587-8BEB-3B0CD979ED22}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {3E2EF0DA-32BB-4A7A-9089-B132E1677AA7}
+	EndGlobalSection
+EndGlobal
@@ -0,0 +1,36 @@
+using System;
+using System.Linq;
+
+namespace SpreaderFrontEnd {
+   public class Book : IEquatable<Book> {
+      public Book(BookSide bids = null, BookSide asks = null) {
+         this.bids = bids ?? new BookSide();
+         this.asks = asks ?? new BookSide();
+      }
+
+      public BookSide bids { get; }
+      public BookSide asks { get; }
+
+      public Book Clone() {
+         return new Book(
+            new BookSide(bids.levels.ToList()),
+            new BookSide(asks.levels.ToList()));
+      }
+
+      public bool Equals(Book other) {
+         return other != null && other.bids.Equals(bids) && other.asks.Equals(asks);
+      }
+
+      public override bool Equals(object obj) {
+         return Equals(obj as Book);
+      }
+
+      public override int GetHashCode() {
+         return HashCodeHelper.combine(bids.GetHashCode(), asks.GetHashCode());
+      }
+
+      public override string ToString() {
+         return $"bid: {bids} | ask: {asks}";
+      }
+   }
+}
@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace SpreaderFrontEnd {
+   public class BookSide : IEquatable<BookSide> {
+      public BookSide() {
+         levels = new List<PriceLevel>();
+      }
+
+      public BookSide(IEnumerable<PriceLevel> levels) {
+         this.levels = levels?.ToList() ?? new List<PriceLevel>();
+      }
+
+      public IList<PriceLevel> levels { get; }
+
+      public BookSide Clone() {
+         return new BookSide(levels.ToList());
+      }
+
+      public bool Equals(BookSide other) {
+         return other != null && levels.SequenceEqual(other.levels);
+      }
+
+      public override bool Equals(object obj) {
+         return Equals(obj as BookSide);
+      }
+
+      public override int GetHashCode() {
+         return levels.Select(l => l.GetHashCode()).Skip(1).Aggregate(
+            levels[0].GetHashCode(), HashCodeHelper.combine);
+      }
+
+      public override string ToString() {
+         return string.Join("; ", levels);
+      }
+   }
+}
@@ -0,0 +1,120 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+
+namespace SpreaderFrontEnd {
+   public class LegCursor {
+      public LegCursor(int leg_size, IList<PriceLevel> levels) {
+         this.leg_size = leg_size;
+         this.levels = levels;
+      }
+
+      /// <summary>
+      /// The [signed] quantity of this leg in the SpreaderContract to which it belongs
+      /// </summary>
+      public int leg_size { get; }
+
+      /// <summary>
+      /// The [unsigned] quantity of this leg in the SpreaderContract to which it belongs
+      /// </summary>
+      public int leg_size_abs {
+         get {
+            return Math.Abs(leg_size);
+         }
+      }
+
+      /// <summary>
+      /// The price levels of the underlying BookSide
+      /// </summary>
+      public IList<PriceLevel> levels { get; }
+
+      /// <summary>
+      /// The index of the current level. When <see cref="consume_unit_qty(uint, out List{PriceLevel})"/>
+      /// is called, quantity consumption begins at this level. Once this level's quantity is fully
+      /// consumed, <see cref="cursor"/> is incremented, and <see cref="curr_level_consumed_qty"/>
+      /// is reset to 0.
+      /// </summary>
+      public int cursor { get; private set; }
+
+      /// <summary>
+      /// The quantity that has been consumed at the current level (i.e., the level at index
+      /// <see cref="cursor"/>)
+      /// </summary>
+      public uint curr_level_consumed_qty { get; private set; }
+
+      /// <summary>
+      /// Consumes the specified quantity of units at the best available price(s)
+      /// </summary>
+      /// <param name="unit_qty">
+      /// The unit quantity to consume
+      /// </param>
+      /// <returns>True if the entire quantity is consumed, otherwise false.</returns>
+      public bool consume_unit_qty(uint unit_qty, out List<PriceLevel> consumed_levels) {
+         consumed_levels = new List<PriceLevel>();
+         uint marg_qty = (uint)(unit_qty * leg_size_abs);
+         var consumed_qty = _consume_raw_qty(marg_qty, ref consumed_levels);
+         Debug.Assert(consumed_qty % leg_size_abs == 0);
+         uint consumed_units = (uint)(consumed_qty / leg_size_abs);
+         return consumed_units == unit_qty;
+      }
+
+      /// <summary>
+      /// Gets the number of units (raw_quantity / leg_size_abs) available at the best price
+      /// </summary>
+      public PriceLevel curr_synth_level() {
+         if (cursor >= levels.Count) {
+            return PriceLevel.empty;
+         }
+
+         var curr_level = levels[cursor];
+         Debug.Assert(curr_level.qty >= curr_level_consumed_qty);
+         var curr_level_rem_qty = curr_level.qty - curr_level_consumed_qty;
+         if (curr_level_rem_qty >= leg_size_abs) {
+            return new PriceLevel(
+               price: curr_level.price * leg_size_abs,
+               qty: (uint)(curr_level_rem_qty / leg_size_abs));
+         }
+
+         double unit_cost = curr_level.price * curr_level_rem_qty;
+         var unit_rem = leg_size_abs - curr_level_rem_qty;
+         for (int i = cursor + 1; i < levels.Count; i++) {
+            curr_level = levels[i];
+            if (curr_level.qty >= unit_rem) {
+               unit_cost += curr_level.price * unit_rem;
+               return new PriceLevel(price: unit_cost, qty: 1);
+            }
+            unit_cost += curr_level.price * curr_level.qty;
+            unit_rem -= curr_level.qty;
+         }
+         return PriceLevel.empty;
+      }
+
+      /// <summary>
+      /// Consumes as much of the specified [raw] quantity as possible
+      /// </summary>
+      /// <returns>
+      /// The quantity that was actually consumed
+      /// </returns>
+      uint _consume_raw_qty(uint raw_qty, ref List<PriceLevel> dest) {
+         if (levels == null || cursor >= levels.Count) {
+            return 0;
+         }
+         var curr_level = levels[cursor];
+         // Cursor should be incremented when curr_level_consumed_qty == levels[cursor].qty
+         // (i.e., curr_level.qty should never be less than curr_level_consumed_qty)
+         Debug.Assert(curr_level.qty > curr_level_consumed_qty);
+         var curr_level_qty_rem = curr_level.qty - curr_level_consumed_qty;
+         if (curr_level_qty_rem > raw_qty) {
+            curr_level_consumed_qty += raw_qty;
+            dest.Add(new PriceLevel(price: curr_level.price, qty: raw_qty));
+            return raw_qty;
+         }
+         // The input qty is greater than the qty that remains at this level. Consume the rest on
+         // the next level.
+         cursor++;
+         curr_level_consumed_qty = 0;
+         dest.Add(new PriceLevel(price: curr_level.price, qty: curr_level_qty_rem));
+         return curr_level_qty_rem + _consume_raw_qty(raw_qty - curr_level_qty_rem, ref dest);
+      }
+   }
+}
@@ -0,0 +1,44 @@
+using System;
+
+namespace SpreaderFrontEnd {
+   public struct PriceLevel : IEquatable<PriceLevel> {
+      public PriceLevel(double price, uint qty) {
+         this.price = price;
+         this.qty = qty;
+      }
+
+      public static PriceLevel empty {
+         get {
+            return new PriceLevel(double.NaN, 0);
+         }
+      }
+
+      public double price { get; }
+      public uint qty { get; }
+
+      public PriceLevel subtract_qty(uint value) {
+         System.Diagnostics.Debug.Assert(value <= qty);
+         return new PriceLevel(price, qty - value);
+      }
+      
+      public PriceLevel add_qty(uint value) {
+         return new PriceLevel(price, qty + value);
+      }
+
+      public override string ToString() {
+         return $"{price} ({qty})";
+      }
+
+      public bool Equals(PriceLevel other) {
+         return qty == other.qty && price.Equals(other.price);
+      }
+
+      public override bool Equals(object obj) {
+         return obj is PriceLevel other && Equals(other);
+      }
+
+      public override int GetHashCode() {
+         return HashCodeHelper.combine(price.GetHashCode(), qty.GetHashCode());
+      }
+   }
+}
@@ -0,0 +1,49 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Diagnostics;
+
+namespace SpreaderFrontEnd {
+   public static class SpreaderBookCalculator {
+      public static Book compute_spreader_book(
+         SpreaderContract contract, IEnumerable<Book> leg_books) {
+         if (contract == null) {
+            throw new ArgumentNullException(nameof(contract));
+         }
+         if (leg_books == null) {
+            throw new ArgumentNullException(nameof(leg_books));
+         }
+         var leg_book_list = leg_books as IList<Book> ?? leg_books.ToList();
+         var synth_book = new SyntheticBook(contract, leg_book_list);
+         return synth_book.to_book();
+      }
+
+      public static BookSide compute_spreader_book_side(
+         SpreaderContract contract, IList<Book> leg_books, bool is_bid) {
+         Debug.Assert(contract.spread_legs.Count == leg_books.Count);
+         var leg_cursors = leg_books.Select((b, i) => new LegCursor(
+            contract.spread_legs[i].qty,
+            contract.spread_legs[i].qty < 0 == is_bid ? b.asks.levels : b.bids.levels)).ToList();
+         var level_qty = leg_cursors.Select(lc => lc.curr_synth_level().qty).Min();
+         var result = new BookSide();
+
+         while (level_qty > 0) {
+            double level_price = 0;
+            for (int i = 0; i < leg_cursors.Count; i++) {
+               var lc = leg_cursors[i];
+               bool did_consume = lc.consume_unit_qty(level_qty, out var consumed_levels);
+               Debug.Assert(did_consume);
+               var leg_cost = consumed_levels.Select(l => l.price * l.qty).Sum() / level_qty;
+               if (lc.leg_size < 0) {
+                  level_price -= leg_cost;
+               } else {
+                  level_price += leg_cost;
+               }
+            }
+            result.levels.Add(new PriceLevel(price: level_price, qty: level_qty));
+            level_qty = leg_cursors.Select(lc => lc.curr_synth_level().qty).Min();
+         }
+         return result;
+      }
+   }
+}
@@ -0,0 +1,17 @@
+using System.Collections.Generic;
+
+namespace SpreaderFrontEnd {
+   class SyntheticBook {
+      public SyntheticBook(SpreaderContract contract, IList<Book> leg_books) {
+         bids = new SyntheticBookSide(contract, leg_books, true);
+         asks = new SyntheticBookSide(contract, leg_books, false);
+      }
+
+      public SyntheticBookSide bids { get; }
+      public SyntheticBookSide asks { get; }
+
+      public Book to_book() {
+         return new Book(bids: bids.to_book_side(), asks: asks.to_book_side());
+      }
+   }
+}
@@ -0,0 +1,28 @@
+using System.Collections;
+using System.Collections.Generic;
+
+namespace SpreaderFrontEnd {
+   class SyntheticBookSide : IEnumerable<PriceLevel> {
+      readonly SpreaderContract _contract;
+      readonly IList<Book> _leg_books;
+      readonly bool _is_bid;
+
+      public SyntheticBookSide(SpreaderContract contract, IList<Book> leg_books, bool is_bid) {
+         _contract = contract;
+         _leg_books = leg_books;
+         _is_bid = is_bid;
+      }
+
+      public BookSide to_book_side() {
+         return new BookSide(this);
+      }
+
+      public IEnumerator<PriceLevel> GetEnumerator() {
+         return new SyntheticBookSideEnumerator(_contract, _leg_books, _is_bid);
+      }
+
+      IEnumerator IEnumerable.GetEnumerator() {
+         return GetEnumerator();
+      }
+   }
+}
@@ -0,0 +1,59 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Diagnostics;
+using System.Collections;
+
+namespace SpreaderFrontEnd {
+   class SyntheticBookSideEnumerator : IEnumerator<PriceLevel> {
+      readonly List<LegCursor> _leg_cursors;
+
+      PriceLevel _current;
+      uint _level_qty;
+
+      public SyntheticBookSideEnumerator(
+         SpreaderContract contract, IList<Book> leg_books, bool is_bid) {
+         Debug.Assert(contract.spread_legs.Count == leg_books.Count);
+         _leg_cursors = new List<LegCursor>(leg_books.Count);
+         for (int i = 0; i < leg_books.Count; i++) {
+            _leg_cursors.Add(new LegCursor(
+               contract.spread_legs[i].qty,
+               contract.spread_legs[i].qty < 0 == is_bid ?
+                  leg_books[i].asks.levels : leg_books[i].bids.levels));
+         }
+      }
+
+      public PriceLevel Current => _current;
+
+      object IEnumerator.Current => _current;
+
+      public void Dispose() { }
+
+      public bool MoveNext() {
+         _level_qty = _leg_cursors.Select(lc => lc.curr_synth_level().qty).Min();
+         if (_level_qty == 0) {
+            return false;
+         }
+         double level_price = 0;
+         for (int i = 0; i < _leg_cursors.Count; i++) {
+            var lc = _leg_cursors[i];
+            bool did_consume = lc.consume_unit_qty(_level_qty, out var consumed_levels);
+            Debug.Assert(did_consume);
+            var leg_cost = consumed_levels.Select(l => l.price * l.qty).Sum() / _level_qty;
+            if (lc.leg_size < 0) {
+               level_price -= leg_cost;
+            } else {
+               level_price += leg_cost;
+            }
+         }
+         _current = new PriceLevel(price: level_price, qty: _level_qty);
+         return true;
+      }
+
+      public void Reset() {
+         for (int i = 0; i < _leg_cursors.Count; i++) {
+            var lc = _leg_cursors[i];
+            _leg_cursors[i] = new LegCursor(lc.leg_size, lc.levels);
+         }
+      }
+   }
+}
@@ -0,0 +1,8 @@
+namespace SpreaderFrontEnd {
+   static class HashCodeHelper {
+      // Copied from https://referencesource.microsoft.com/#System.Numerics/System/Numerics/HashCodeHelper.cs
+      public static int combine(int h1, int h2) {
+         return (((h1 << 5) + h1) ^ h2);
+      }
+   }
+}
@@ -0,0 +1,744 @@
+using System.Windows.Forms;
+
+namespace SpreaderFrontEnd
+{
+    partial class LegControl
+    {
+        /// <summary> 
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary> 
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Component Designer generated code
+
+        /// <summary> 
+        /// Required method for Designer support - do not modify 
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+         this._combobox_security = new System.Windows.Forms.ComboBox();
+         this.label1 = new System.Windows.Forms.Label();
+         this.label2 = new System.Windows.Forms.Label();
+         this.label3 = new System.Windows.Forms.Label();
+         this.label5 = new System.Windows.Forms.Label();
+         this.groupBox1 = new System.Windows.Forms.GroupBox();
+         this._textbox_quote_qho_length = new System.Windows.Forms.TextBox();
+         this._textbox_quote_insidemarketdistance_towarddistance = new System.Windows.Forms.TextBox();
+         this._textbox_quote_conditional_ticks = new System.Windows.Forms.TextBox();
+         this._textbox_quote_throttle_outsideticks = new System.Windows.Forms.TextBox();
+         this._textbox_quote_throttle_insideticks = new System.Windows.Forms.TextBox();
+         this._textbox_quote_showqty_qty = new System.Windows.Forms.TextBox();
+         this.label11 = new System.Windows.Forms.Label();
+         this._checkbox_quote_insidemarketdistance = new System.Windows.Forms.CheckBox();
+         this.label10 = new System.Windows.Forms.Label();
+         this._checkbox_quote_conditional = new System.Windows.Forms.CheckBox();
+         this.label9 = new System.Windows.Forms.Label();
+         this.label8 = new System.Windows.Forms.Label();
+         this._checkbox_quote_throttle = new System.Windows.Forms.CheckBox();
+         this.label7 = new System.Windows.Forms.Label();
+         this._checkbox_quote_showqty = new System.Windows.Forms.CheckBox();
+         this.label6 = new System.Windows.Forms.Label();
+         this.groupBox2 = new System.Windows.Forms.GroupBox();
+         this._textbox_prehedge_payless_paylessticks = new System.Windows.Forms.TextBox();
+         this._textbox_prehedge_payup_payupticks = new System.Windows.Forms.TextBox();
+         this._textbox_prehedge_payup_threshold = new System.Windows.Forms.TextBox();
+         this._textbox_prehedge_payless_threshold = new System.Windows.Forms.TextBox();
+         this.label13 = new System.Windows.Forms.Label();
+         this.label14 = new System.Windows.Forms.Label();
+         this.label15 = new System.Windows.Forms.Label();
+         this._checkbox_prehedge_payup = new System.Windows.Forms.CheckBox();
+         this.label16 = new System.Windows.Forms.Label();
+         this._checkbox_prehedge_payless = new System.Windows.Forms.CheckBox();
+         this.groupBox3 = new System.Windows.Forms.GroupBox();
+         this._textbox_posthedge_sizebasedcross_crossticks = new System.Windows.Forms.TextBox();
+         this._textbox_posthedge_sizebasedcross_threshold = new System.Windows.Forms.TextBox();
+         this._textbox_posthedge_timesbasedcross_crossticks = new System.Windows.Forms.TextBox();
+         this._textbox_posthedge_timesbasedcross_timems = new System.Windows.Forms.TextBox();
+         this._textbox_posthedge_ticksawaycross_crossticks = new System.Windows.Forms.TextBox();
+         this._textbox_posthedge_ticksawaycross_threshold = new System.Windows.Forms.TextBox();
+         this.label20 = new System.Windows.Forms.Label();
+         this.label21 = new System.Windows.Forms.Label();
+         this._checkbox_posthedge_sizebasedcross = new System.Windows.Forms.CheckBox();
+         this.label12 = new System.Windows.Forms.Label();
+         this.label17 = new System.Windows.Forms.Label();
+         this.label18 = new System.Windows.Forms.Label();
+         this._checkbox_posthedge_timebasedcross = new System.Windows.Forms.CheckBox();
+         this.label19 = new System.Windows.Forms.Label();
+         this._checkbox_posthedge_ticksawaycross = new System.Windows.Forms.CheckBox();
+         this._textbox_leg_qty = new System.Windows.Forms.TextBox();
+         this._checkbox_leg_enablequoting = new System.Windows.Forms.CheckBox();
+         this._textbox_leg_leanqtyfactor = new System.Windows.Forms.TextBox();
+         this._combobox_mdtype = new System.Windows.Forms.ComboBox();
+         this._textbox_leg_price_mult = new System.Windows.Forms.TextBox();
+         this.label4 = new System.Windows.Forms.Label();
+         this._label_leanqty_factor = new System.Windows.Forms.Label();
+         this.groupBox1.SuspendLayout();
+         this.groupBox2.SuspendLayout();
+         this.groupBox3.SuspendLayout();
+         this.SuspendLayout();
+         // 
+         // _combobox_security
+         // 
+         this._combobox_security.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
+         this._combobox_security.FormattingEnabled = true;
+         this._combobox_security.Location = new System.Drawing.Point(157, 15);
+         this._combobox_security.Name = "_combobox_security";
+         this._combobox_security.Size = new System.Drawing.Size(100, 23);
+         this._combobox_security.TabIndex = 0;
+         // 
+         // label1
+         // 
+         this.label1.AutoSize = true;
+         this.label1.Location = new System.Drawing.Point(16, 23);
+         this.label1.Name = "label1";
+         this.label1.Size = new System.Drawing.Size(49, 15);
+         this.label1.TabIndex = 1;
+         this.label1.Text = "Security";
+         // 
+         // label2
+         // 
+         this.label2.AutoSize = true;
+         this.label2.Location = new System.Drawing.Point(16, 58);
+         this.label2.Name = "label2";
+         this.label2.Size = new System.Drawing.Size(53, 15);
+         this.label2.TabIndex = 2;
+         this.label2.Text = "Quantity";
+         // 
+         // label3
+         // 
+         this.label3.AutoSize = true;
+         this.label3.Location = new System.Drawing.Point(16, 128);
+         this.label3.Name = "label3";
+         this.label3.Size = new System.Drawing.Size(89, 15);
+         this.label3.TabIndex = 3;
+         this.label3.Text = "Enable Quoting";
+         // 
+         // label5
+         // 
+         this.label5.AutoSize = true;
+         this.label5.Location = new System.Drawing.Point(16, 198);
+         this.label5.Name = "label5";
+         this.label5.Size = new System.Drawing.Size(98, 15);
+         this.label5.TabIndex = 5;
+         this.label5.Text = "Market Data Type";
+         // 
+         // groupBox1
+         // 
+         this.groupBox1.Controls.Add(this._textbox_quote_qho_length);
+         this.groupBox1.Controls.Add(this._textbox_quote_insidemarketdistance_towarddistance);
+         this.groupBox1.Controls.Add(this._textbox_quote_conditional_ticks);
+         this.groupBox1.Controls.Add(this._textbox_quote_throttle_outsideticks);
+         this.groupBox1.Controls.Add(this._textbox_quote_throttle_insideticks);
+         this.groupBox1.Controls.Add(this._textbox_quote_showqty_qty);
+         this.groupBox1.Controls.Add(this.label11);
+         this.groupBox1.Controls.Add(this._checkbox_quote_insidemarketdistance);
+         this.groupBox1.Controls.Add(this.label10);
+         this.groupBox1.Controls.Add(this._checkbox_quote_conditional);
+         this.groupBox1.Controls.Add(this.label9);
+         this.groupBox1.Controls.Add(this.label8);
+         this.groupBox1.Controls.Add(this._checkbox_quote_throttle);
+         this.groupBox1.Controls.Add(this.label7);
+         this.groupBox1.Controls.Add(this._checkbox_quote_showqty);
+         this.groupBox1.Controls.Add(this.label6);
+         this.groupBox1.ForeColor = System.Drawing.Color.Black;
+         this.groupBox1.Location = new System.Drawing.Point(12, 238);
+         this.groupBox1.Name = "groupBox1";
+         this.groupBox1.Size = new System.Drawing.Size(265, 369);
+         this.groupBox1.TabIndex = 6;
+         this.groupBox1.TabStop = false;
+         this.groupBox1.Text = "Quote";
+         // 
+         // _textbox_quote_qho_length
+         // 
+         this._textbox_quote_qho_length.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_quote_qho_length.Location = new System.Drawing.Point(145, 28);
+         this._textbox_quote_qho_length.Name = "_textbox_quote_qho_length";
+         this._textbox_quote_qho_length.Size = new System.Drawing.Size(100, 23);
+         this._textbox_quote_qho_length.TabIndex = 6;
+         // 
+         // _textbox_quote_insidemarketdistance_towarddistance
+         // 
+         this._textbox_quote_insidemarketdistance_towarddistance.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_quote_insidemarketdistance_towarddistance.Location = new System.Drawing.Point(145, 314);
+         this._textbox_quote_insidemarketdistance_towarddistance.Name = "_textbox_quote_insidemarketdistance_towarddistance";
+         this._textbox_quote_insidemarketdistance_towarddistance.Size = new System.Drawing.Size(100, 23);
+         this._textbox_quote_insidemarketdistance_towarddistance.TabIndex = 15;
+         // 
+         // _textbox_quote_conditional_ticks
+         // 
+         this._textbox_quote_conditional_ticks.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_quote_conditional_ticks.Location = new System.Drawing.Point(145, 250);
+         this._textbox_quote_conditional_ticks.Name = "_textbox_quote_conditional_ticks";
+         this._textbox_quote_conditional_ticks.Size = new System.Drawing.Size(100, 23);
+         this._textbox_quote_conditional_ticks.TabIndex = 13;
+         // 
+         // _textbox_quote_throttle_outsideticks
+         // 
+         this._textbox_quote_throttle_outsideticks.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_quote_throttle_outsideticks.Location = new System.Drawing.Point(145, 186);
+         this._textbox_quote_throttle_outsideticks.Name = "_textbox_quote_throttle_outsideticks";
+         this._textbox_quote_throttle_outsideticks.Size = new System.Drawing.Size(100, 23);
+         this._textbox_quote_throttle_outsideticks.TabIndex = 11;
+         // 
+         // _textbox_quote_throttle_insideticks
+         // 
+         this._textbox_quote_throttle_insideticks.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_quote_throttle_insideticks.Location = new System.Drawing.Point(145, 156);
+         this._textbox_quote_throttle_insideticks.Name = "_textbox_quote_throttle_insideticks";
+         this._textbox_quote_throttle_insideticks.Size = new System.Drawing.Size(100, 23);
+         this._textbox_quote_throttle_insideticks.TabIndex = 10;
+         // 
+         // _textbox_quote_showqty_qty
+         // 
+         this._textbox_quote_showqty_qty.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_quote_showqty_qty.Location = new System.Drawing.Point(145, 92);
+         this._textbox_quote_showqty_qty.Name = "_textbox_quote_showqty_qty";
+         this._textbox_quote_showqty_qty.Size = new System.Drawing.Size(100, 23);
+         this._textbox_quote_showqty_qty.TabIndex = 8;
+         // 
+         // label11
+         // 
+         this.label11.AutoSize = true;
+         this.label11.Location = new System.Drawing.Point(45, 322);
+         this.label11.Name = "label11";
+         this.label11.Size = new System.Drawing.Size(93, 15);
+         this.label11.TabIndex = 16;
+         this.label11.Text = "Toward Distance";
+         // 
+         // _checkbox_quote_insidemarketdistance
+         // 
+         this._checkbox_quote_insidemarketdistance.AutoSize = true;
+         this._checkbox_quote_insidemarketdistance.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
+         this._checkbox_quote_insidemarketdistance.Location = new System.Drawing.Point(15, 288);
+         this._checkbox_quote_insidemarketdistance.Name = "_checkbox_quote_insidemarketdistance";
+         this._checkbox_quote_insidemarketdistance.Size = new System.Drawing.Size(131, 19);
+         this._checkbox_quote_insidemarketdistance.TabIndex = 14;
+         this._checkbox_quote_insidemarketdistance.Text = "Inside Market Dist.";
+         this._checkbox_quote_insidemarketdistance.UseVisualStyleBackColor = true;
+         this._checkbox_quote_insidemarketdistance.CheckedChanged += new System.EventHandler(this._checkbox_quote_insidemarketdistance_CheckedChanged);
+         // 
+         // label10
+         // 
+         this.label10.AutoSize = true;
+         this.label10.Location = new System.Drawing.Point(47, 258);
+         this.label10.Name = "label10";
+         this.label10.Size = new System.Drawing.Size(33, 15);
+         this.label10.TabIndex = 14;
+         this.label10.Text = "Ticks";
+         // 
+         // _checkbox_quote_conditional
+         // 
+         this._checkbox_quote_conditional.AutoSize = true;
+         this._checkbox_quote_conditional.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
+         this._checkbox_quote_conditional.Location = new System.Drawing.Point(15, 224);
+         this._checkbox_quote_conditional.Name = "_checkbox_quote_conditional";
+         this._checkbox_quote_conditional.Size = new System.Drawing.Size(88, 19);
+         this._checkbox_quote_conditional.TabIndex = 12;
+         this._checkbox_quote_conditional.Text = "Conditional";
+         this._checkbox_quote_conditional.UseVisualStyleBackColor = true;
+         this._checkbox_quote_conditional.CheckedChanged += new System.EventHandler(this._checkbox_quote_conditional_CheckedChanged);
+         // 
+         // label9
+         // 
+         this.label9.AutoSize = true;
+         this.label9.Location = new System.Drawing.Point(45, 194);
+         this.label9.Name = "label9";
+         this.label9.Size = new System.Drawing.Size(77, 15);
+         this.label9.TabIndex = 12;
+         this.label9.Text = "Outside Ticks";
+         // 
+         // label8
+         // 
+         this.label8.AutoSize = true;
+         this.label8.Location = new System.Drawing.Point(45, 164);
+         this.label8.Name = "label8";
+         this.label8.Size = new System.Drawing.Size(67, 15);
+         this.label8.TabIndex = 11;
+         this.label8.Text = "Inside Ticks";
+         // 
+         // _checkbox_quote_throttle
+         // 
+         this._checkbox_quote_throttle.AutoSize = true;
+         this._checkbox_quote_throttle.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
+         this._checkbox_quote_throttle.Location = new System.Drawing.Point(15, 130);
+         this._checkbox_quote_throttle.Name = "_checkbox_quote_throttle";
+         this._checkbox_quote_throttle.Size = new System.Drawing.Size(72, 19);
+         this._checkbox_quote_throttle.TabIndex = 9;
+         this._checkbox_quote_throttle.Text = "Throttle";
+         this._checkbox_quote_throttle.UseVisualStyleBackColor = true;
+         this._checkbox_quote_throttle.CheckedChanged += new System.EventHandler(this._checkbox_quote_throttle_CheckedChanged);
+         // 
+         // label7
+         // 
+         this.label7.AutoSize = true;
+         this.label7.Location = new System.Drawing.Point(45, 100);
+         this.label7.Name = "label7";
+         this.label7.Size = new System.Drawing.Size(53, 15);
+         this.label7.TabIndex = 9;
+         this.label7.Text = "Quantity";
+         // 
+         // _checkbox_quote_showqty
+         // 
+         this._checkbox_quote_showqty.AutoSize = true;
+         this._checkbox_quote_showqty.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
+         this._checkbox_quote_showqty.Location = new System.Drawing.Point(15, 66);
+         this._checkbox_quote_showqty.Name = "_checkbox_quote_showqty";
+         this._checkbox_quote_showqty.Size = new System.Drawing.Size(108, 19);
+         this._checkbox_quote_showqty.TabIndex = 7;
+         this._checkbox_quote_showqty.Text = "Show Quantity";
+         this._checkbox_quote_showqty.UseVisualStyleBackColor = true;
+         this._checkbox_quote_showqty.CheckedChanged += new System.EventHandler(this._checkbox_quote_showqty_CheckedChanged);
+         // 
+         // label6
+         // 
+         this.label6.AutoSize = true;
+         this.label6.Location = new System.Drawing.Point(15, 36);
+         this.label6.Name = "label6";
+         this.label6.Size = new System.Drawing.Size(121, 15);
+         this.label6.TabIndex = 6;
+         this.label6.Text = "Queue Holder Length";
+         // 
+         // groupBox2
+         // 
+         this.groupBox2.Controls.Add(this._textbox_prehedge_payless_paylessticks);
+         this.groupBox2.Controls.Add(this._textbox_prehedge_payup_payupticks);
+         this.groupBox2.Controls.Add(this._textbox_prehedge_payup_threshold);
+         this.groupBox2.Controls.Add(this._textbox_prehedge_payless_threshold);
+         this.groupBox2.Controls.Add(this.label13);
+         this.groupBox2.Controls.Add(this.label14);
+         this.groupBox2.Controls.Add(this.label15);
+         this.groupBox2.Controls.Add(this._checkbox_prehedge_payup);
+         this.groupBox2.Controls.Add(this.label16);
+         this.groupBox2.Controls.Add(this._checkbox_prehedge_payless);
+         this.groupBox2.Location = new System.Drawing.Point(13, 626);
+         this.groupBox2.Name = "groupBox2";
+         this.groupBox2.Size = new System.Drawing.Size(264, 234);
+         this.groupBox2.TabIndex = 7;
+         this.groupBox2.TabStop = false;
+         this.groupBox2.Text = "Pre-Hedge";
+         // 
+         // _textbox_prehedge_payless_paylessticks
+         // 
+         this._textbox_prehedge_payless_paylessticks.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_prehedge_payless_paylessticks.Location = new System.Drawing.Point(144, 90);
+         this._textbox_prehedge_payless_paylessticks.Name = "_textbox_prehedge_payless_paylessticks";
+         this._textbox_prehedge_payless_paylessticks.Size = new System.Drawing.Size(100, 23);
+         this._textbox_prehedge_payless_paylessticks.TabIndex = 18;
+         // 
+         // _textbox_prehedge_payup_payupticks
+         // 
+         this._textbox_prehedge_payup_payupticks.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_prehedge_payup_payupticks.Location = new System.Drawing.Point(144, 187);
+         this._textbox_prehedge_payup_payupticks.Name = "_textbox_prehedge_payup_payupticks";
+         this._textbox_prehedge_payup_payupticks.Size = new System.Drawing.Size(100, 23);
+         this._textbox_prehedge_payup_payupticks.TabIndex = 21;
+         // 
+         // _textbox_prehedge_payup_threshold
+         // 
+         this._textbox_prehedge_payup_threshold.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_prehedge_payup_threshold.Location = new System.Drawing.Point(144, 156);
+         this._textbox_prehedge_payup_threshold.Name = "_textbox_prehedge_payup_threshold";
+         this._textbox_prehedge_payup_threshold.Size = new System.Drawing.Size(100, 23);
+         this._textbox_prehedge_payup_threshold.TabIndex = 20;
+         // 
+         // _textbox_prehedge_payless_threshold
+         // 
+         this._textbox_prehedge_payless_threshold.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_prehedge_payless_threshold.Location = new System.Drawing.Point(144, 59);
+         this._textbox_prehedge_payless_threshold.Name = "_textbox_prehedge_payless_threshold";
+         this._textbox_prehedge_payless_threshold.Size = new System.Drawing.Size(100, 23);
+         this._textbox_prehedge_payless_threshold.TabIndex = 17;
+         // 
+         // label13
+         // 
+         this.label13.AutoSize = true;
+         this.label13.Location = new System.Drawing.Point(44, 98);
+         this.label13.Name = "label13";
+         this.label13.Size = new System.Drawing.Size(74, 15);
+         this.label13.TabIndex = 14;
+         this.label13.Text = "Payless Ticks";
+         // 
+         // label14
+         // 
+         this.label14.AutoSize = true;
+         this.label14.Location = new System.Drawing.Point(44, 195);
+         this.label14.Name = "label14";
+         this.label14.Size = new System.Drawing.Size(69, 15);
+         this.label14.TabIndex = 12;
+         this.label14.Text = "Payup Ticks";
+         // 
+         // label15
+         // 
+         this.label15.AutoSize = true;
+         this.label15.Location = new System.Drawing.Point(44, 164);
+         this.label15.Name = "label15";
+         this.label15.Size = new System.Drawing.Size(59, 15);
+         this.label15.TabIndex = 11;
+         this.label15.Text = "Threshold";
+         // 
+         // _checkbox_prehedge_payup
+         // 
+         this._checkbox_prehedge_payup.AutoSize = true;
+         this._checkbox_prehedge_payup.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
+         this._checkbox_prehedge_payup.Location = new System.Drawing.Point(15, 129);
+         this._checkbox_prehedge_payup.Name = "_checkbox_prehedge_payup";
+         this._checkbox_prehedge_payup.Size = new System.Drawing.Size(64, 19);
+         this._checkbox_prehedge_payup.TabIndex = 19;
+         this._checkbox_prehedge_payup.Text = "Pay Up";
+         this._checkbox_prehedge_payup.UseVisualStyleBackColor = true;
+         this._checkbox_prehedge_payup.CheckedChanged += new System.EventHandler(this._checkbox_prehedge_payup_CheckedChanged);
+         // 
+         // label16
+         // 
+         this.label16.AutoSize = true;
+         this.label16.Location = new System.Drawing.Point(44, 67);
+         this.label16.Name = "label16";
+         this.label16.Size = new System.Drawing.Size(59, 15);
+         this.label16.TabIndex = 9;
+         this.label16.Text = "Threshold";
+         // 
+         // _checkbox_prehedge_payless
+         // 
+         this._checkbox_prehedge_payless.AutoSize = true;
+         this._checkbox_prehedge_payless.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
+         this._checkbox_prehedge_payless.Location = new System.Drawing.Point(15, 32);
+         this._checkbox_prehedge_payless.Name = "_checkbox_prehedge_payless";
+         this._checkbox_prehedge_payless.Size = new System.Drawing.Size(71, 19);
+         this._checkbox_prehedge_payless.TabIndex = 16;
+         this._checkbox_prehedge_payless.Text = "Pay Less";
+         this._checkbox_prehedge_payless.UseVisualStyleBackColor = true;
+         this._checkbox_prehedge_payless.CheckedChanged += new System.EventHandler(this._checkbox_prehedge_payless_CheckedChanged);
+         // 
+         // groupBox3
+         // 
+         this.groupBox3.Controls.Add(this._textbox_posthedge_sizebasedcross_crossticks);
+         this.groupBox3.Controls.Add(this._textbox_posthedge_sizebasedcross_threshold);
+         this.groupBox3.Controls.Add(this._textbox_posthedge_timesbasedcross_crossticks);
+         this.groupBox3.Controls.Add(this._textbox_posthedge_timesbasedcross_timems);
+         this.groupBox3.Controls.Add(this._textbox_posthedge_ticksawaycross_crossticks);
+         this.groupBox3.Controls.Add(this._textbox_posthedge_ticksawaycross_threshold);
+         this.groupBox3.Controls.Add(this.label20);
+         this.groupBox3.Controls.Add(this.label21);
+         this.groupBox3.Controls.Add(this._checkbox_posthedge_sizebasedcross);
+         this.groupBox3.Controls.Add(this.label12);
+         this.groupBox3.Controls.Add(this.label17);
+         this.groupBox3.Controls.Add(this.label18);
+         this.groupBox3.Controls.Add(this._checkbox_posthedge_timebasedcross);
+         this.groupBox3.Controls.Add(this.label19);
+         this.groupBox3.Controls.Add(this._checkbox_posthedge_ticksawaycross);
+         this.groupBox3.Location = new System.Drawing.Point(13, 882);
+         this.groupBox3.Name = "groupBox3";
+         this.groupBox3.Size = new System.Drawing.Size(264, 319);
+         this.groupBox3.TabIndex = 8;
+         this.groupBox3.TabStop = false;
+         this.groupBox3.Text = "Post-Hedge";
+         // 
+         // _textbox_posthedge_sizebasedcross_crossticks
+         // 
+         this._textbox_posthedge_sizebasedcross_crossticks.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_posthedge_sizebasedcross_crossticks.Location = new System.Drawing.Point(144, 276);
+         this._textbox_posthedge_sizebasedcross_crossticks.Name = "_textbox_posthedge_sizebasedcross_crossticks";
+         this._textbox_posthedge_sizebasedcross_crossticks.Size = new System.Drawing.Size(100, 23);
+         this._textbox_posthedge_sizebasedcross_crossticks.TabIndex = 30;
+         // 
+         // _textbox_posthedge_sizebasedcross_threshold
+         // 
+         this._textbox_posthedge_sizebasedcross_threshold.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_posthedge_sizebasedcross_threshold.Location = new System.Drawing.Point(144, 246);
+         this._textbox_posthedge_sizebasedcross_threshold.Name = "_textbox_posthedge_sizebasedcross_threshold";
+         this._textbox_posthedge_sizebasedcross_threshold.Size = new System.Drawing.Size(100, 23);
+         this._textbox_posthedge_sizebasedcross_threshold.TabIndex = 29;
+         // 
+         // _textbox_posthedge_timesbasedcross_crossticks
+         // 
+         this._textbox_posthedge_timesbasedcross_crossticks.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_posthedge_timesbasedcross_crossticks.Location = new System.Drawing.Point(144, 182);
+         this._textbox_posthedge_timesbasedcross_crossticks.Name = "_textbox_posthedge_timesbasedcross_crossticks";
+         this._textbox_posthedge_timesbasedcross_crossticks.Size = new System.Drawing.Size(100, 23);
+         this._textbox_posthedge_timesbasedcross_crossticks.TabIndex = 27;
+         // 
+         // _textbox_posthedge_timesbasedcross_timems
+         // 
+         this._textbox_posthedge_timesbasedcross_timems.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_posthedge_timesbasedcross_timems.Location = new System.Drawing.Point(144, 152);
+         this._textbox_posthedge_timesbasedcross_timems.Name = "_textbox_posthedge_timesbasedcross_timems";
+         this._textbox_posthedge_timesbasedcross_timems.Size = new System.Drawing.Size(100, 23);
+         this._textbox_posthedge_timesbasedcross_timems.TabIndex = 26;
+         // 
+         // _textbox_posthedge_ticksawaycross_crossticks
+         // 
+         this._textbox_posthedge_ticksawaycross_crossticks.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_posthedge_ticksawaycross_crossticks.Location = new System.Drawing.Point(144, 88);
+         this._textbox_posthedge_ticksawaycross_crossticks.Name = "_textbox_posthedge_ticksawaycross_crossticks";
+         this._textbox_posthedge_ticksawaycross_crossticks.Size = new System.Drawing.Size(100, 23);
+         this._textbox_posthedge_ticksawaycross_crossticks.TabIndex = 24;
+         // 
+         // _textbox_posthedge_ticksawaycross_threshold
+         // 
+         this._textbox_posthedge_ticksawaycross_threshold.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_posthedge_ticksawaycross_threshold.Location = new System.Drawing.Point(144, 58);
+         this._textbox_posthedge_ticksawaycross_threshold.Name = "_textbox_posthedge_ticksawaycross_threshold";
+         this._textbox_posthedge_ticksawaycross_threshold.Size = new System.Drawing.Size(100, 23);
+         this._textbox_posthedge_ticksawaycross_threshold.TabIndex = 23;
+         // 
+         // label20
+         // 
+         this.label20.AutoSize = true;
+         this.label20.Location = new System.Drawing.Point(44, 284);
+         this.label20.Name = "label20";
+         this.label20.Size = new System.Drawing.Size(65, 15);
+         this.label20.TabIndex = 17;
+         this.label20.Text = "Cross Ticks";
+         // 
+         // label21
+         // 
+         this.label21.AutoSize = true;
+         this.label21.Location = new System.Drawing.Point(44, 254);
+         this.label21.Name = "label21";
+         this.label21.Size = new System.Drawing.Size(59, 15);
+         this.label21.TabIndex = 16;
+         this.label21.Text = "Threshold";
+         // 
+         // _checkbox_posthedge_sizebasedcross
+         // 
+         this._checkbox_posthedge_sizebasedcross.AutoSize = true;
+         this._checkbox_posthedge_sizebasedcross.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
+         this._checkbox_posthedge_sizebasedcross.Location = new System.Drawing.Point(15, 220);
+         this._checkbox_posthedge_sizebasedcross.Name = "_checkbox_posthedge_sizebasedcross";
+         this._checkbox_posthedge_sizebasedcross.Size = new System.Drawing.Size(117, 19);
+         this._checkbox_posthedge_sizebasedcross.TabIndex = 28;
+         this._checkbox_posthedge_sizebasedcross.Text = "Size Based Cross";
+         this._checkbox_posthedge_sizebasedcross.UseVisualStyleBackColor = true;
+         this._checkbox_posthedge_sizebasedcross.CheckedChanged += new System.EventHandler(this._checkbox_posthedge_sizebasedcross_CheckedChanged);
+         // 
+         // label12
+         // 
+         this.label12.AutoSize = true;
+         this.label12.Location = new System.Drawing.Point(44, 96);
+         this.label12.Name = "label12";
+         this.label12.Size = new System.Drawing.Size(65, 15);
+         this.label12.TabIndex = 14;
+         this.label12.Text = "Cross Ticks";
+         // 
+         // label17
+         // 
+         this.label17.AutoSize = true;
+         this.label17.Location = new System.Drawing.Point(44, 190);
+         this.label17.Name = "label17";
+         this.label17.Size = new System.Drawing.Size(65, 15);
+         this.label17.TabIndex = 12;
+         this.label17.Text = "Cross Ticks";
+         // 
+         // label18
+         // 
+         this.label18.AutoSize = true;
+         this.label18.Location = new System.Drawing.Point(44, 160);
+         this.label18.Name = "label18";
+         this.label18.Size = new System.Drawing.Size(57, 15);
+         this.label18.TabIndex = 11;
+         this.label18.Text = "Time(ms)";
+         // 
+         // _checkbox_posthedge_timebasedcross
+         // 
+         this._checkbox_posthedge_timebasedcross.AutoSize = true;
+         this._checkbox_posthedge_timebasedcross.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
+         this._checkbox_posthedge_timebasedcross.Location = new System.Drawing.Point(15, 126);
+         this._checkbox_posthedge_timebasedcross.Name = "_checkbox_posthedge_timebasedcross";
+         this._checkbox_posthedge_timebasedcross.Size = new System.Drawing.Size(122, 19);
+         this._checkbox_posthedge_timebasedcross.TabIndex = 25;
+         this._checkbox_posthedge_timebasedcross.Text = "Time Based Cross";
+         this._checkbox_posthedge_timebasedcross.UseVisualStyleBackColor = true;
+         this._checkbox_posthedge_timebasedcross.CheckedChanged += new System.EventHandler(this._checkbox_posthedge_timebasedcross_CheckedChanged);
+         // 
+         // label19
+         // 
+         this.label19.AutoSize = true;
+         this.label19.Location = new System.Drawing.Point(44, 66);
+         this.label19.Name = "label19";
+         this.label19.Size = new System.Drawing.Size(59, 15);
+         this.label19.TabIndex = 9;
+         this.label19.Text = "Threshold";
+         // 
+         // _checkbox_posthedge_ticksawaycross
+         // 
+         this._checkbox_posthedge_ticksawaycross.AutoSize = true;
+         this._checkbox_posthedge_ticksawaycross.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
+         this._checkbox_posthedge_ticksawaycross.Location = new System.Drawing.Point(15, 32);
+         this._checkbox_posthedge_ticksawaycross.Name = "_checkbox_posthedge_ticksawaycross";
+         this._checkbox_posthedge_ticksawaycross.Size = new System.Drawing.Size(119, 19);
+         this._checkbox_posthedge_ticksawaycross.TabIndex = 22;
+         this._checkbox_posthedge_ticksawaycross.Text = "Ticks Away Cross";
+         this._checkbox_posthedge_ticksawaycross.UseVisualStyleBackColor = true;
+         this._checkbox_posthedge_ticksawaycross.CheckedChanged += new System.EventHandler(this._checkbox_posthedge_ticksawaycross_CheckedChanged);
+         // 
+         // _textbox_leg_qty
+         // 
+         this._textbox_leg_qty.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_leg_qty.Location = new System.Drawing.Point(157, 50);
+         this._textbox_leg_qty.Name = "_textbox_leg_qty";
+         this._textbox_leg_qty.Size = new System.Drawing.Size(100, 23);
+         this._textbox_leg_qty.TabIndex = 1;
+         this._textbox_leg_qty.Tag = "Double";
+         // 
+         // _checkbox_leg_enablequoting
+         // 
+         this._checkbox_leg_enablequoting.AutoSize = true;
+         this._checkbox_leg_enablequoting.Location = new System.Drawing.Point(157, 129);
+         this._checkbox_leg_enablequoting.Name = "_checkbox_leg_enablequoting";
+         this._checkbox_leg_enablequoting.Size = new System.Drawing.Size(15, 14);
+         this._checkbox_leg_enablequoting.TabIndex = 3;
+         this._checkbox_leg_enablequoting.UseVisualStyleBackColor = true;
+         // 
+         // _textbox_leg_leanqtyfactor
+         // 
+         this._textbox_leg_leanqtyfactor.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_leg_leanqtyfactor.Location = new System.Drawing.Point(157, 155);
+         this._textbox_leg_leanqtyfactor.Name = "_textbox_leg_leanqtyfactor";
+         this._textbox_leg_leanqtyfactor.Size = new System.Drawing.Size(100, 23);
+         this._textbox_leg_leanqtyfactor.TabIndex = 4;
+         // 
+         // _combobox_mdtype
+         // 
+         this._combobox_mdtype.AutoCompleteCustomSource.AddRange(new string[] {
+            "Merged",
+            "Direct"});
+         this._combobox_mdtype.FormattingEnabled = true;
+         this._combobox_mdtype.Location = new System.Drawing.Point(157, 190);
+         this._combobox_mdtype.Name = "_combobox_mdtype";
+         this._combobox_mdtype.Size = new System.Drawing.Size(100, 23);
+         this._combobox_mdtype.TabIndex = 5;
+         // 
+         // _textbox_leg_price_mult
+         // 
+         this._textbox_leg_price_mult.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+         this._textbox_leg_price_mult.Location = new System.Drawing.Point(157, 85);
+         this._textbox_leg_price_mult.Name = "_textbox_leg_price_mult";
+         this._textbox_leg_price_mult.Size = new System.Drawing.Size(100, 23);
+         this._textbox_leg_price_mult.TabIndex = 2;
+         this._textbox_leg_price_mult.Tag = "Double";
+         // 
+         // label4
+         // 
+         this.label4.AutoSize = true;
+         this.label4.Location = new System.Drawing.Point(16, 93);
+         this.label4.Name = "label4";
+         this.label4.Size = new System.Drawing.Size(87, 15);
+         this.label4.TabIndex = 10;
+         this.label4.Text = "Price Multiplier";
+         // 
+         // _label_leanqty_factor
+         // 
+         this._label_leanqty_factor.AutoSize = true;
+         this._label_leanqty_factor.Location = new System.Drawing.Point(16, 163);
+         this._label_leanqty_factor.Name = "_label_leanqty_factor";
+         this._label_leanqty_factor.Size = new System.Drawing.Size(90, 15);
+         this._label_leanqty_factor.TabIndex = 4;
+         this._label_leanqty_factor.Text = "Lean Qty Factor";
+         // 
+         // LegControl
+         // 
+         this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+         this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+         this.BackColor = System.Drawing.Color.White;
+         this.Controls.Add(this._textbox_leg_price_mult);
+         this.Controls.Add(this.label4);
+         this.Controls.Add(this._combobox_mdtype);
+         this.Controls.Add(this._textbox_leg_leanqtyfactor);
+         this.Controls.Add(this._checkbox_leg_enablequoting);
+         this.Controls.Add(this._textbox_leg_qty);
+         this.Controls.Add(this.groupBox3);
+         this.Controls.Add(this.groupBox2);
+         this.Controls.Add(this.groupBox1);
+         this.Controls.Add(this.label5);
+         this.Controls.Add(this._label_leanqty_factor);
+         this.Controls.Add(this.label3);
+         this.Controls.Add(this.label2);
+         this.Controls.Add(this.label1);
+         this.Controls.Add(this._combobox_security);
+         this.Name = "LegControl";
+         this.Size = new System.Drawing.Size(291, 1220);
+         this.groupBox1.ResumeLayout(false);
+         this.groupBox1.PerformLayout();
+         this.groupBox2.ResumeLayout(false);
+         this.groupBox2.PerformLayout();
+         this.groupBox3.ResumeLayout(false);
+         this.groupBox3.PerformLayout();
+         this.ResumeLayout(false);
+         this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private ComboBox _combobox_security;
+        private Label label1;
+        private Label label2;
+        private Label label3;
+        private Label label5;
+        private GroupBox groupBox1;
+        private Label label6;
+        private Label label11;
+        private CheckBox _checkbox_quote_insidemarketdistance;
+        private Label label10;
+        private CheckBox _checkbox_quote_conditional;
+        private Label label9;
+        private Label label8;
+        private CheckBox _checkbox_quote_throttle;
+        private Label label7;
+        private CheckBox _checkbox_quote_showqty;
+        private GroupBox groupBox2;
+        private Label label13;
+        private Label label14;
+        private Label label15;
+        private CheckBox _checkbox_prehedge_payup;
+        private Label label16;
+        private CheckBox _checkbox_prehedge_payless;
+        private GroupBox groupBox3;
+        private Label label20;
+        private Label label21;
+        private CheckBox _checkbox_posthedge_sizebasedcross;
+        private Label label12;
+        private Label label17;
+        private Label label18;
+        private CheckBox _checkbox_posthedge_timebasedcross;
+        private Label label19;
+        private CheckBox _checkbox_posthedge_ticksawaycross;
+        private TextBox _textbox_leg_qty;
+        private CheckBox _checkbox_leg_enablequoting;
+        private TextBox _textbox_leg_leanqtyfactor;
+        private ComboBox _combobox_mdtype;
+        private TextBox _textbox_quote_insidemarketdistance_towarddistance;
+        private TextBox _textbox_quote_conditional_ticks;
+        private TextBox _textbox_quote_throttle_outsideticks;
+        private TextBox _textbox_quote_throttle_insideticks;
+        private TextBox _textbox_quote_showqty_qty;
+        private TextBox _textbox_prehedge_payless_paylessticks;
+        private TextBox _textbox_prehedge_payup_payupticks;
+        private TextBox _textbox_prehedge_payup_threshold;
+        private TextBox _textbox_prehedge_payless_threshold;
+        private TextBox _textbox_posthedge_sizebasedcross_crossticks;
+        private TextBox _textbox_posthedge_sizebasedcross_threshold;
+        private TextBox _textbox_posthedge_timesbasedcross_crossticks;
+        private TextBox _textbox_posthedge_timesbasedcross_timems;
+        private TextBox _textbox_posthedge_ticksawaycross_crossticks;
+        private TextBox _textbox_posthedge_ticksawaycross_threshold;
+        private TextBox _textbox_quote_qho_length;
+        private TextBox _textbox_leg_price_mult;
+        private Label label4;
+        private Label _label_leanqty_factor;
+    }
+}
@@ -0,0 +1,305 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+using System.Diagnostics;
+using System.Reflection;
+
+namespace SpreaderFrontEnd {
+   // UI control that represents a spreader leg. This is hidden within the MainSpreaderForm
+   public partial class LegControl : UserControl {
+      private SpreaderLegContract _leg_contract = new SpreaderLegContract();
+      private IEnumerable<string> _securities = new List<string>();
+      public LegControl() {
+         InitializeComponent();
+      }
+      public void initialize(IEnumerable<string> securities, SpreaderLegContract? leg_contract) {
+         _securities = securities;
+         _leg_contract = leg_contract ?? new SpreaderLegContract();
+         _populate_ui();
+      }
+
+      #region Data -> UI
+
+      private void _populate_ui() {
+         _populate_basic();
+         _populate_quote();
+         _populate_prehedge();
+         _populate_posthedge();
+         _initialize_enablement();
+         _assign_events();
+      }
+
+      void _assign_events() {
+         foreach (System.Reflection.FieldInfo fi in GetType().GetFields(BindingFlags.NonPublic
+             | BindingFlags.Public
+             | BindingFlags.Instance)) {
+            if (fi.FieldType == typeof(TextBox)) {
+               object? val = fi.GetValue(this);
+               if (val != null) {
+                  TextBox? textbox = val as TextBox;
+                  if (textbox != null) {
+                     textbox.TextChanged += Textbox_TextChanged;
+                     textbox.EnabledChanged += Textbox_EnabledChanged;
+                  }
+               }
+            }
+         }
+      }
+
+      private void Textbox_EnabledChanged(object? sender, EventArgs e) {
+      }
+
+      private void Textbox_TextChanged(object? sender, EventArgs e) {
+         if (sender != null && sender is TextBox) {
+            TextBox? tb = sender as TextBox;
+            if (tb == null)
+               return;
+            if ("Double".Equals(tb.Tag)) {
+               double res;
+               bool parsed = Double.TryParse(tb.Text, out res);
+               tb.ForeColor = parsed ? Color.Black : Color.Red;
+            } else {
+               UInt32 res;
+               bool parsed = UInt32.TryParse(tb.Text, out res);
+               tb.ForeColor = parsed ? Color.Black : Color.Red;
+            }
+         }
+      }
+
+      void _populate_basic() {
+         // security
+         _combobox_security.Items.Clear();
+         List<string> securities_plus_empty = new List<string>(_securities);
+         securities_plus_empty.Add(String.Empty);
+         _combobox_security.Items.AddRange(securities_plus_empty.ToArray());
+         _combobox_security.Text = _leg_contract.security;
+         // qty etc
+         _textbox_leg_qty.Text = _leg_contract.qty.ToString();
+         _textbox_leg_price_mult.Text = _leg_contract.price_mult.ToString();
+         _checkbox_leg_enablequoting.Checked = _leg_contract.enable_quoting;
+         _textbox_leg_leanqtyfactor.Text = _leg_contract.lean_qty_factor.ToString();
+         _combobox_mdtype.Text = _leg_contract.md_type.ToString();
+      }
+
+      void _populate_quote() {
+         Debug.Assert(_leg_contract.quote_params != null);
+         var qp = _leg_contract.quote_params;
+         _textbox_quote_qho_length.Text = qp.qho_length.ToString();
+         // show qty
+         _checkbox_quote_showqty.Checked = qp.show_qty != null;
+         if (qp.show_qty != null) {
+            _checkbox_quote_showqty.Checked = true;
+            _textbox_quote_showqty_qty.Text = qp.show_qty.show_qty.ToString();
+         }
+         // throttle
+         _checkbox_quote_throttle.Checked = qp.throttle != null;
+         if (qp.throttle != null) {
+            _textbox_quote_throttle_insideticks.Text = qp.throttle.inside_ticks.ToString();
+            _textbox_quote_throttle_outsideticks.Text = qp.throttle.outside_ticks.ToString();
+         }
+         // conditional
+         _checkbox_quote_conditional.Checked = qp.conditional != null;
+         if (qp.conditional != null) {
+            _textbox_quote_conditional_ticks.Text = qp.conditional.ticks.ToString();
+         }
+         // inside market dist.
+         _checkbox_quote_insidemarketdistance.Checked = qp.inside_market_distance != null;
+         if (qp.inside_market_distance != null) {
+            _textbox_quote_insidemarketdistance_towarddistance.Text = qp.inside_market_distance.ToString();
+         }
+      }
+
+      void _populate_prehedge() {
+         var ph = _leg_contract.pre_hedge_params;
+         // payless
+         _checkbox_prehedge_payless.Checked = ph.payless != null;
+         if (ph.payless != null) {
+            _textbox_prehedge_payless_threshold.Text = ph.payless.threshold.ToString();
+            _textbox_prehedge_payless_paylessticks.Text = ph.payless.payless_ticks.ToString();
+         }
+         // payup
+         _checkbox_prehedge_payup.Checked = ph.payup != null;
+         if (ph.payup != null) {
+            _textbox_prehedge_payup_threshold.Text = ph.payup.threshold.ToString();
+            _textbox_prehedge_payup_payupticks.Text = ph.payup.payup_ticks.ToString();
+         }
+      }
+
+      void _populate_posthedge() {
+         var ph = _leg_contract.post_hedge_params;
+         _checkbox_posthedge_ticksawaycross.Checked = ph.ticks_away_cross != null;
+         // ticks away cross
+         if (ph.ticks_away_cross != null) {
+            _textbox_posthedge_ticksawaycross_threshold.Text = ph.ticks_away_cross.threshold.ToString();
+            _textbox_posthedge_ticksawaycross_crossticks.Text = ph.ticks_away_cross.cross_ticks.ToString();
+         }
+         //time based cross
+         _checkbox_posthedge_timebasedcross.Checked = ph.time_based_cross != null;
+         if (ph.time_based_cross != null) {
+            _textbox_posthedge_timesbasedcross_timems.Text = ph.time_based_cross.time_ms.ToString();
+            _textbox_posthedge_timesbasedcross_crossticks.Text = ph.time_based_cross.cross_ticks.ToString();
+         }
+         // size based cross
+         _checkbox_posthedge_sizebasedcross.Checked = ph.size_based_cross != null;
+         if (ph.size_based_cross != null) {
+            _textbox_posthedge_sizebasedcross_threshold.Text = ph.size_based_cross.threshold.ToString();
+            _textbox_posthedge_sizebasedcross_crossticks.Text = ph.size_based_cross.ToString();
+         }
+      }
+
+      // forces checkbox events so that the text boxes connected to it are enabled/disabled
+      private void _initialize_enablement() {
+         _checkbox_quote_showqty_CheckedChanged(_checkbox_quote_showqty, new EventArgs());
+         _checkbox_quote_throttle_CheckedChanged(_checkbox_quote_showqty, new EventArgs());
+         _checkbox_quote_conditional_CheckedChanged(_checkbox_quote_showqty, new EventArgs());
+         _checkbox_quote_insidemarketdistance_CheckedChanged(_checkbox_quote_showqty, new EventArgs());
+         _checkbox_prehedge_payless_CheckedChanged(_checkbox_quote_showqty, new EventArgs());
+         _checkbox_prehedge_payup_CheckedChanged(_checkbox_quote_showqty, new EventArgs());
+         _checkbox_posthedge_ticksawaycross_CheckedChanged(_checkbox_quote_showqty, new EventArgs());
+         _checkbox_posthedge_timebasedcross_CheckedChanged(_checkbox_quote_showqty, new EventArgs());
+         _checkbox_posthedge_sizebasedcross_CheckedChanged(_checkbox_quote_showqty, new EventArgs());
+      }
+
+      #endregion
+
+      #region UI -> Data
+
+      public ParsedUIData<SpreaderLegContract> get_data() {
+         SpreaderLegContract rv = new SpreaderLegContract();
+         try {
+            // top part
+            rv.security = _combobox_security.Text;
+            rv.qty = Int32.Parse(_textbox_leg_qty.Text);
+            rv.price_mult = Double.Parse(_textbox_leg_price_mult.Text);
+            rv.enable_quoting = _checkbox_leg_enablequoting.Checked;
+            rv.lean_qty_factor = Double.Parse(_textbox_leg_leanqtyfactor.Text);
+            rv.md_type = SpreaderLegContract.MDType.Merged;
+            // Quote
+            rv.quote_params = new SpreaderLegContract.QuoteParams();
+            rv.quote_params.qho_length = String.IsNullOrEmpty(_textbox_quote_qho_length.Text) ? 0 :
+                UInt32.Parse(_textbox_quote_qho_length.Text);
+            rv.quote_params.show_qty = null;
+            if (_checkbox_quote_showqty.Checked) {
+               rv.quote_params.show_qty = new SpreaderLegContract.QuoteParams.ShowQty();
+               rv.quote_params.show_qty.show_qty = UInt32.Parse(_textbox_quote_showqty_qty.Text);
+            }
+            rv.quote_params.throttle = null;
+            if (_checkbox_quote_throttle.Checked) {
+               rv.quote_params.throttle = new SpreaderLegContract.QuoteParams.Throttle();
+               rv.quote_params.throttle.inside_ticks = UInt32.Parse(_textbox_quote_throttle_insideticks.Text);
+               rv.quote_params.throttle.outside_ticks = UInt32.Parse(_textbox_quote_throttle_outsideticks.Text);
+            }
+            rv.quote_params.conditional = null;
+            if (_checkbox_quote_conditional.Checked) {
+               rv.quote_params.conditional = new SpreaderLegContract.QuoteParams.Conditional();
+               rv.quote_params.conditional.ticks = Int32.Parse(_textbox_quote_conditional_ticks.Text);
+            }
+            rv.quote_params.inside_market_distance = null;
+            if (_checkbox_quote_insidemarketdistance.Checked) {
+               rv.quote_params.inside_market_distance = new SpreaderLegContract.QuoteParams.InsideMarketDistance();
+               rv.quote_params.inside_market_distance.toward_distance =
+                     UInt32.Parse(_textbox_quote_insidemarketdistance_towarddistance.Text);
+            }
+            //Pre-Hedge
+            rv.pre_hedge_params = new SpreaderLegContract.PreHedgeParams();
+            rv.pre_hedge_params.payless = null;
+            if (_checkbox_prehedge_payless.Checked) {
+               rv.pre_hedge_params.payless = new SpreaderLegContract.PreHedgeParams.PayLess();
+               rv.pre_hedge_params.payless.threshold = UInt32.Parse(_textbox_prehedge_payless_threshold.Text);
+               rv.pre_hedge_params.payless.payless_ticks =
+                  UInt32.Parse(_textbox_prehedge_payless_paylessticks.Text);
+            }
+            rv.pre_hedge_params.payup = null;
+            if (_checkbox_prehedge_payup.Checked) {
+               rv.pre_hedge_params.payup = new SpreaderLegContract.PreHedgeParams.PayUp();
+               rv.pre_hedge_params.payup.threshold = UInt32.Parse(_textbox_prehedge_payup_threshold.Text);
+               rv.pre_hedge_params.payup.payup_ticks = UInt32.Parse(_textbox_prehedge_payup_payupticks.Text);
+            }
+            //Post-Hedge
+            rv.post_hedge_params = new SpreaderLegContract.PostHedgeParams();
+            rv.post_hedge_params.ticks_away_cross = null;
+            if (_checkbox_posthedge_ticksawaycross.Checked) {
+               rv.post_hedge_params.ticks_away_cross = new SpreaderLegContract.PostHedgeParams.TicksAwayCross();
+               rv.post_hedge_params.ticks_away_cross.threshold = UInt32.Parse(_textbox_posthedge_ticksawaycross_threshold.Text);
+               rv.post_hedge_params.ticks_away_cross.cross_ticks = UInt32.Parse(_textbox_posthedge_ticksawaycross_crossticks.Text);
+            }
+            rv.post_hedge_params.time_based_cross = null;
+            if (_checkbox_posthedge_timebasedcross.Checked) {
+               rv.post_hedge_params.time_based_cross = new SpreaderLegContract.PostHedgeParams.TimeBasedCross();
+               rv.post_hedge_params.time_based_cross.time_ms =
+                  UInt32.Parse(_textbox_posthedge_timesbasedcross_timems.Text);
+               rv.post_hedge_params.time_based_cross.cross_ticks =
+                  UInt32.Parse(_textbox_posthedge_timesbasedcross_crossticks.Text);
+            }
+            rv.post_hedge_params.size_based_cross = null;
+            if (_checkbox_posthedge_sizebasedcross.Checked) {
+               rv.post_hedge_params.size_based_cross = new SpreaderLegContract.PostHedgeParams.SizedBasedCross();
+               rv.post_hedge_params.size_based_cross.threshold = UInt32.Parse(_textbox_posthedge_sizebasedcross_threshold.Text);
+               rv.post_hedge_params.size_based_cross.cross_ticks = UInt32.Parse(_textbox_posthedge_sizebasedcross_crossticks.Text);
+            }
+         }
+         catch(Exception ex) {
+            return new ParsedUIData<SpreaderLegContract>(null, true, ex.Message);
+         }
+         return new ParsedUIData<SpreaderLegContract>(rv, false, String.Empty);
+      }
+
+      #endregion
+
+      public SpreaderLegContract get_contract() {
+         return null;
+      }
+
+      #region Checkbox Check Change Events
+
+      private void _checkbox_quote_showqty_CheckedChanged(object sender, EventArgs e) {
+         _textbox_quote_showqty_qty.Enabled = _checkbox_quote_showqty.Checked;
+      }
+
+      private void _checkbox_quote_throttle_CheckedChanged(object sender, EventArgs e) {
+         _textbox_quote_throttle_insideticks.Enabled = _checkbox_quote_throttle.Checked;
+         _textbox_quote_throttle_outsideticks.Enabled = _checkbox_quote_throttle.Checked;
+      }
+
+      private void _checkbox_quote_conditional_CheckedChanged(object sender, EventArgs e) {
+         _textbox_quote_conditional_ticks.Enabled = _checkbox_quote_conditional.Checked;
+      }
+
+      private void _checkbox_quote_insidemarketdistance_CheckedChanged(object sender, EventArgs e) {
+         _textbox_quote_insidemarketdistance_towarddistance.Enabled = _checkbox_quote_insidemarketdistance.Checked;
+      }
+
+      private void _checkbox_prehedge_payless_CheckedChanged(object sender, EventArgs e) {
+         _textbox_prehedge_payless_threshold.Enabled = _checkbox_prehedge_payless.Checked;
+         _textbox_prehedge_payless_paylessticks.Enabled = _checkbox_prehedge_payless.Checked;
+      }
+
+      private void _checkbox_prehedge_payup_CheckedChanged(object sender, EventArgs e) {
+         _textbox_prehedge_payup_threshold.Enabled = _checkbox_prehedge_payup.Checked;
+         _textbox_prehedge_payup_payupticks.Enabled = _checkbox_prehedge_payup.Checked;
+      }
+
+      private void _checkbox_posthedge_ticksawaycross_CheckedChanged(object sender, EventArgs e) {
+         _textbox_posthedge_ticksawaycross_threshold.Enabled = _checkbox_posthedge_ticksawaycross.Checked;
+         _textbox_posthedge_ticksawaycross_crossticks.Enabled = _checkbox_posthedge_ticksawaycross.Checked;
+      }
+
+      private void _checkbox_posthedge_timebasedcross_CheckedChanged(object sender, EventArgs e) {
+         _textbox_posthedge_timesbasedcross_timems.Enabled = _checkbox_posthedge_timebasedcross.Checked;
+         _textbox_posthedge_timesbasedcross_crossticks.Enabled = _checkbox_posthedge_timebasedcross.Checked;
+      }
+
+      private void _checkbox_posthedge_sizebasedcross_CheckedChanged(object sender, EventArgs e) {
+         _textbox_posthedge_sizebasedcross_threshold.Enabled = _checkbox_posthedge_sizebasedcross.Checked;
+         _textbox_posthedge_sizebasedcross_crossticks.Enabled = _checkbox_posthedge_sizebasedcross.Checked;
+      }
+
+      #endregion
+   }
+}
@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
@@ -0,0 +1,152 @@
+using System.Windows.Forms;
+
+namespace SpreaderFrontEnd
+{
+    partial class MainSpreaderForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+         this._button_ok = new System.Windows.Forms.Button();
+         this._button_cancel = new System.Windows.Forms.Button();
+         this._label_spreader_name = new System.Windows.Forms.Label();
+         this._textbox_spreader_name = new System.Windows.Forms.TextBox();
+         this._legcontrol1 = new SpreaderFrontEnd.LegControl();
+         this._legcontrol2 = new SpreaderFrontEnd.LegControl();
+         this._legcontrol3 = new SpreaderFrontEnd.LegControl();
+         this._legcontrol4 = new SpreaderFrontEnd.LegControl();
+         this._legcontrol5 = new SpreaderFrontEnd.LegControl();
+         this.SuspendLayout();
+         // 
+         // _button_ok
+         // 
+         this._button_ok.Location = new System.Drawing.Point(1231, 1306);
+         this._button_ok.Name = "_button_ok";
+         this._button_ok.Size = new System.Drawing.Size(120, 33);
+         this._button_ok.TabIndex = 4;
+         this._button_ok.Text = "OK";
+         this._button_ok.UseVisualStyleBackColor = false;
+         this._button_ok.Click += new System.EventHandler(this._button_ok_Click);
+         // 
+         // _button_cancel
+         // 
+         this._button_cancel.Location = new System.Drawing.Point(1380, 1306);
+         this._button_cancel.Name = "_button_cancel";
+         this._button_cancel.Size = new System.Drawing.Size(121, 33);
+         this._button_cancel.TabIndex = 5;
+         this._button_cancel.Text = "Cancel";
+         this._button_cancel.UseVisualStyleBackColor = false;
+         this._button_cancel.Click += new System.EventHandler(this._button_cancel_Click);
+         // 
+         // _label_spreader_name
+         // 
+         this._label_spreader_name.AutoSize = true;
+         this._label_spreader_name.Location = new System.Drawing.Point(22, 28);
+         this._label_spreader_name.Name = "_label_spreader_name";
+         this._label_spreader_name.Size = new System.Drawing.Size(88, 15);
+         this._label_spreader_name.TabIndex = 6;
+         this._label_spreader_name.Text = "Spreader Name";
+         // 
+         // _textbox_spreader_name
+         // 
+         this._textbox_spreader_name.Location = new System.Drawing.Point(116, 25);
+         this._textbox_spreader_name.Name = "_textbox_spreader_name";
+         this._textbox_spreader_name.Size = new System.Drawing.Size(343, 23);
+         this._textbox_spreader_name.TabIndex = 0;
+         // 
+         // _legcontrol1
+         // 
+         this._legcontrol1.BackColor = System.Drawing.Color.White;
+         this._legcontrol1.Location = new System.Drawing.Point(22, 67);
+         this._legcontrol1.Name = "_legcontrol1";
+         this._legcontrol1.Size = new System.Drawing.Size(291, 1220);
+         this._legcontrol1.TabIndex = 1;
+         // 
+         // _legcontrol2
+         // 
+         this._legcontrol2.BackColor = System.Drawing.Color.White;
+         this._legcontrol2.Location = new System.Drawing.Point(319, 67);
+         this._legcontrol2.Name = "_legcontrol2";
+         this._legcontrol2.Size = new System.Drawing.Size(291, 1220);
+         this._legcontrol2.TabIndex = 2;
+         // 
+         // _legcontrol3
+         // 
+         this._legcontrol3.BackColor = System.Drawing.Color.White;
+         this._legcontrol3.Location = new System.Drawing.Point(616, 67);
+         this._legcontrol3.Name = "_legcontrol3";
+         this._legcontrol3.Size = new System.Drawing.Size(291, 1220);
+         this._legcontrol3.TabIndex = 3;
+         // 
+         // _legcontrol4
+         // 
+         this._legcontrol4.BackColor = System.Drawing.Color.White;
+         this._legcontrol4.Location = new System.Drawing.Point(913, 67);
+         this._legcontrol4.Name = "_legcontrol4";
+         this._legcontrol4.Size = new System.Drawing.Size(291, 1220);
+         this._legcontrol4.TabIndex = 4;
+         // 
+         // _legcontrol5
+         // 
+         this._legcontrol5.BackColor = System.Drawing.Color.White;
+         this._legcontrol5.Location = new System.Drawing.Point(1210, 67);
+         this._legcontrol5.Name = "_legcontrol5";
+         this._legcontrol5.Size = new System.Drawing.Size(291, 1220);
+         this._legcontrol5.TabIndex = 5;
+         // 
+         // MainSpreaderForm
+         // 
+         this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+         this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+         this.ClientSize = new System.Drawing.Size(1517, 1363);
+         this.Controls.Add(this._legcontrol5);
+         this.Controls.Add(this._legcontrol4);
+         this.Controls.Add(this._legcontrol3);
+         this.Controls.Add(this._legcontrol2);
+         this.Controls.Add(this._legcontrol1);
+         this.Controls.Add(this._textbox_spreader_name);
+         this.Controls.Add(this._label_spreader_name);
+         this.Controls.Add(this._button_cancel);
+         this.Controls.Add(this._button_ok);
+         this.Name = "MainSpreaderForm";
+         this.Text = "MainSpreaderForm";
+         this.ResumeLayout(false);
+         this.PerformLayout();
+
+        }
+
+        #endregion
+        private Button _button_ok;
+        private Button _button_cancel;
+        private Label _label_spreader_name;
+        private TextBox _textbox_spreader_name;
+        private LegControl _legcontrol1;
+        private LegControl _legcontrol2;
+        private LegControl _legcontrol3;
+        private LegControl _legcontrol4;
+        private LegControl _legcontrol5;
+    }
+}
@@ -0,0 +1,81 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace SpreaderFrontEnd {
+   // This is the main UI widget. It is passed a list of securities and a SpreaderContract.
+   // The SpreaderContract can be empty (which will be the case when creating a new spreader).
+   // It has 3 public facing members (other than the constructor),
+   // 2 events that tell whether OK or Cancel was hit, respectively,
+   // and get_spreader_contract that returns a ParsedUIData<SpreaderContract>
+
+   public partial class MainSpreaderForm : Form {
+      private IEnumerable<LegControl> _leg_controls;
+      public Action on_OK = () => { };
+      public Action on_cancel = () => { };
+      private readonly IEnumerable<string> _securities;
+      private SpreaderContract _spreader_contract;
+
+      public MainSpreaderForm(IEnumerable<string> securities,
+                              SpreaderContract spreader_contract)
+          : base() {
+         InitializeComponent();
+         _leg_controls = new LegControl[] { _legcontrol1, _legcontrol2, _legcontrol3, _legcontrol4, _legcontrol5 };
+         _securities = securities;
+         System.Diagnostics.Debug.Assert(spreader_contract != null);
+         // System.Diagnostics.Debug.Assert(spreader_contract.spread_legs.Count() == SpreaderContract.max_nlegs);
+         _spreader_contract = spreader_contract;
+         _textbox_spreader_name.Text = _spreader_contract.name;
+         for (var i = 0; i < _leg_controls.Count(); i++) {
+            SpreaderLegContract? lc = i < _spreader_contract.spread_legs.Count() ?
+                _spreader_contract.spread_legs.ElementAt(i) : null;
+            _leg_controls.ElementAt(i).initialize(securities, lc);
+         }
+      }
+
+      public ParsedUIData<SpreaderContract> get_spreader_contract() {
+         if (String.IsNullOrEmpty(_textbox_spreader_name.Text)) {
+            return new ParsedUIData<SpreaderContract>(null, true, "Spreader name is not set");
+         }
+         List<SpreaderLegContract> leg_contracts = new List<SpreaderLegContract>();
+         uint i = 0;
+         foreach (LegControl lc in _leg_controls) {
+            i++;
+            var leg_res = lc.get_data();
+            if (leg_res.is_error) {
+               return new ParsedUIData<SpreaderContract>(null, true, $"Leg: {i} is not set correctly");
+            }
+            leg_contracts.Add(leg_res.ui_data);
+         }
+         IEnumerable<SpreaderLegContract> leg_contracts_rv = 
+               leg_contracts.Where(l => !String.IsNullOrEmpty(l.security));
+         if (leg_contracts_rv.Count() <= 1) {
+            return new ParsedUIData<SpreaderContract>(
+               null, true, "Spreader needs at least 2 legs");
+         }
+         // check the number of legs
+         return new ParsedUIData<SpreaderContract>(
+            new SpreaderContract(_textbox_spreader_name.Text, leg_contracts_rv), false, String.Empty);
+      }
+
+      private void _button_ok_Click(object sender, EventArgs e) {
+         ParsedUIData<SpreaderContract> ui_data = get_spreader_contract();
+         if (ui_data.is_error) {
+            string err_txt = $"The following error happened \n{ui_data.error_txt}";
+            System.Windows.Forms.MessageBox.Show(err_txt, "Spreader Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            return;
+         }
+         on_OK();
+      }
+
+      private void _button_cancel_Click(object sender, EventArgs e) {
+         on_cancel();
+      }
+   }
+}
@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
@@ -0,0 +1,20 @@
+namespace SpreaderFrontEnd {
+   using System;
+   using System.Collections.Generic;
+   using System.Linq;
+   using System.Text;
+   using System.Threading.Tasks;
+
+
+   public class ParsedUIData<T> {
+      public readonly T ui_data;
+      public readonly bool is_error;
+      public readonly string error_txt;
+
+      public ParsedUIData(T ui_data, bool is_error, string error_txt) {
+         this.ui_data = ui_data;
+         this.is_error = is_error;
+         this.error_txt = error_txt;
+      }
+   }
+}
@@ -0,0 +1,18 @@
+using System;
+using System.Windows.Forms;
+
+namespace SpreaderFrontEnd {
+   internal static class Program {
+      /// <summary>
+      ///  The main entry point for the application.
+      /// </summary>
+      [STAThread]
+      static void Main() {
+         SyntheticBookTest.run();
+         // To customize application configuration such as set high DPI settings or default font,
+         // see https://aka.ms/applicationconfiguration.
+         ApplicationConfiguration.Initialize();
+         Application.Run(new TestForm());
+      }
+   }
+}
@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SpreaderFrontEnd
+{
+    [Serializable]
+   // Represents a spreader contract (anologous ot the protobuf on the C++ side)
+   // We could have generated managed wrappers from the protobuf, but we did not want
+   // to make your build process complicated hence opted for this class.
+   // It is quite simply a wrapper around an enumeration of SpreaderLegContract
+   public class SpreaderContract
+    {
+        public static uint max_nlegs = 5;
+        public string name = String.Empty;
+        public IList<SpreaderLegContract> spread_legs = new List<SpreaderLegContract>();
+
+        public SpreaderContract(string name, IEnumerable<SpreaderLegContract> spread_legs)
+        {
+            this.name = name;
+            this.spread_legs = spread_legs.ToList();
+        }
+
+        public static SpreaderContract empty
+        {
+            get
+            {
+                return new SpreaderContract("UNNAMED",
+                          Enumerable.Repeat<SpreaderLegContract>(new SpreaderLegContract(), 5));
+            }
+        }
+    }
+}
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <LanguageVersion>7</LanguageVersion>
+  </PropertyGroup>
+
+</Project>
@@ -0,0 +1,90 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SpreaderFrontEnd
+{
+    [Serializable]
+    // Represents a single leg of the spreader. It is made up of
+    // 1. a main section consisting of the security, qty, price mult etc
+    // 2. Quote parameters
+    // 3. Pre-Hedge parameters
+    // 4. Post-Hedge parameters
+    // It maps pretty directly to the UI (LegControl)
+    public class SpreaderLegContract
+    {
+        public enum MDType { 
+            Direct = 0,
+            Merged = 1,
+        }
+         
+        public string security = String.Empty;
+        public int qty = 1;
+        public double price_mult = 1;
+        public bool enable_quoting = false;
+        public double lean_qty_factor = 1;
+        public MDType md_type = MDType.Direct;
+        public QuoteParams quote_params = new QuoteParams();
+        public PreHedgeParams pre_hedge_params = new PreHedgeParams();
+        public PostHedgeParams post_hedge_params = new PostHedgeParams();
+
+        public class QuoteParams
+        {
+            public class ShowQty {
+                public UInt32 show_qty = 1;
+            }
+            public class Throttle {
+                public UInt32 inside_ticks = 0;
+                public UInt32 outside_ticks = 0;
+            }
+            public class Conditional {
+                public Int32 ticks = 0;
+            }
+            public class InsideMarketDistance {
+                public UInt32 toward_distance = 0;
+            }
+            public UInt32 qho_length = 0;
+            public ShowQty? show_qty = null;
+            public Throttle? throttle = null;
+            public Conditional? conditional = null;
+            public InsideMarketDistance? inside_market_distance = null;
+        }
+
+        public class PreHedgeParams
+        {
+            public class PayLess {
+                public UInt32 threshold = 0;
+                public UInt32 payless_ticks = 0;
+            }
+            public class PayUp
+            {
+                public UInt32 threshold = 0;
+                public UInt32 payup_ticks = 0;
+            }
+            public PayLess? payless = null;
+            public PayUp? payup = null;
+        }
+
+        public class PostHedgeParams
+        {
+            public class TicksAwayCross {
+                public UInt32 threshold = 0;
+                public UInt32 cross_ticks = 0;
+            }
+            public class TimeBasedCross {
+                public UInt32 time_ms = 0;
+                public UInt32 cross_ticks = 0;
+            }
+            public class SizedBasedCross {
+                public UInt32 threshold = 0;
+                public UInt32 cross_ticks = 0;
+            }
+            public TicksAwayCross? ticks_away_cross = null;
+            public TimeBasedCross? time_based_cross = null;
+            public SizedBasedCross? size_based_cross = null;
+        }
+
+    }
+}
@@ -0,0 +1,79 @@
+using System.Windows.Forms;
+
+namespace SpreaderFrontEnd
+{
+    partial class TestForm
+    {
+        /// <summary>
+        ///  Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        ///  Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        ///  Required method for Designer support - do not modify
+        ///  the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this._button_launch_new = new System.Windows.Forms.Button();
+            this._button_load_existing = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // _button_launch_new
+            // 
+            this._button_launch_new.Location = new System.Drawing.Point(96, 46);
+            this._button_launch_new.Name = "_button_launch_new";
+            this._button_launch_new.Size = new System.Drawing.Size(169, 26);
+            this._button_launch_new.TabIndex = 0;
+            this._button_launch_new.Text = "Launch New";
+            this._button_launch_new.UseVisualStyleBackColor = true;
+            this._button_launch_new.Click += new System.EventHandler(this._button_launch_new_Click);
+            // 
+            // _button_load_existing
+            // 
+            this._button_load_existing.Location = new System.Drawing.Point(96, 114);
+            this._button_load_existing.Name = "_button_load_existing";
+            this._button_load_existing.Size = new System.Drawing.Size(169, 26);
+            this._button_load_existing.TabIndex = 1;
+            this._button_load_existing.Text = "Load Existing";
+            this._button_load_existing.UseVisualStyleBackColor = true;
+            this._button_load_existing.Click += new System.EventHandler(this._button_load_existing_Click);
+            // 
+            // TestForm
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(371, 213);
+            this.Controls.Add(this._button_load_existing);
+            this.Controls.Add(this._button_launch_new);
+            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "TestForm";
+            this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Hide;
+            this.Text = "Test Launcher";
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private Button _button_launch_new;
+        private Button _button_load_existing;
+    }
+}
@@ -0,0 +1,91 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows.Forms;
+
+namespace SpreaderFrontEnd {
+   // Test class that demostrates how to use the MainSpreaderForm.
+   // It has 2 buttons. "Launch New" launches a brand new spreader (empty UI)
+   // while "Launch Existing" loads the MainSpreaderForm with an existing
+   // spreader (hard coded arbitrary values)
+   public partial class TestForm : Form {
+      private IEnumerable<string> _securities = new string[] {
+            "ZCG23",
+            "ZCH23",
+            "ZCJ23",
+            "ZCL23",
+            "ZCM23"
+        };
+
+      public TestForm() {
+         InitializeComponent();
+      }
+
+      private void _button_launch_new_Click(object sender, EventArgs e) {
+         _show_form(SpreaderContract.empty);
+      }
+
+      private void _button_load_existing_Click(object sender, EventArgs e) {
+         var sc = _generate_test_contract();
+         _show_form(sc);
+      }
+
+      private void _show_form(SpreaderContract spreader_contract) {
+         MainSpreaderForm f = new MainSpreaderForm(_securities, spreader_contract);
+         f.on_OK = () => {
+            MessageBox.Show("Received OK", "OK", MessageBoxButtons.OK, MessageBoxIcon.Information);
+            f.Close();
+         };
+         f.on_cancel = () => {
+            MessageBox.Show("Received Cancel", "Cancel", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+            f.Close();
+         };
+         f.ShowDialog();
+      }
+
+      private SpreaderContract _generate_test_contract() {
+         List<SpreaderLegContract> lcs = new List<SpreaderLegContract>();
+         for (uint i = 0; i < 3; i++) {
+            SpreaderLegContract lc = _generate_test_leg_contract(i);
+            lcs.Add(lc);
+         }
+         SpreaderContract sc = new SpreaderContract("TEST SPREADER", lcs);
+         return sc;
+      }
+
+      private SpreaderLegContract _generate_test_leg_contract(uint idx) {
+         SpreaderLegContract rv = new SpreaderLegContract();
+         rv.security = _securities.ElementAt(0);
+         rv.qty = 1;
+         rv.price_mult = 1;
+         rv.enable_quoting = true;
+         rv.lean_qty_factor = 2;
+         rv.md_type = SpreaderLegContract.MDType.Merged;
+         // quote
+         rv.quote_params = new SpreaderLegContract.QuoteParams();
+         rv.quote_params.qho_length = 0;
+         rv.quote_params.show_qty = new SpreaderLegContract.QuoteParams.ShowQty();
+         rv.quote_params.show_qty.show_qty = 10;
+         rv.quote_params.throttle = new SpreaderLegContract.QuoteParams.Throttle();
+         rv.quote_params.throttle.inside_ticks = 3;
+         rv.quote_params.throttle.outside_ticks = 2;
+         // pre hedge
+         rv.pre_hedge_params = new SpreaderLegContract.PreHedgeParams();
+         rv.pre_hedge_params.payless = new SpreaderLegContract.PreHedgeParams.PayLess();
+         rv.pre_hedge_params.payless.threshold = 1000;
+         rv.pre_hedge_params.payless.payless_ticks = 7;
+         rv.pre_hedge_params.payup = new SpreaderLegContract.PreHedgeParams.PayUp();
+         rv.pre_hedge_params.payup.threshold = 500;
+         rv.pre_hedge_params.payup.payup_ticks = 12;
+         // post hedge
+         rv.post_hedge_params = new SpreaderLegContract.PostHedgeParams();
+         rv.post_hedge_params.ticks_away_cross = new SpreaderLegContract.PostHedgeParams.TicksAwayCross();
+         rv.post_hedge_params.ticks_away_cross.threshold = 10;
+         rv.post_hedge_params.ticks_away_cross.cross_ticks = 3;
+         rv.post_hedge_params.time_based_cross = new SpreaderLegContract.PostHedgeParams.TimeBasedCross();
+         rv.post_hedge_params.time_based_cross.time_ms = 20;
+         rv.post_hedge_params.time_based_cross.cross_ticks = 5;
+         return rv;
+      }
+   }
+};
@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
@@ -0,0 +1,230 @@
+using System;
+using System.Diagnostics;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace SpreaderFrontEnd {
+   public static class SyntheticBookTest {
+      /// <summary>
+      /// Run synthetic book computation tests
+      /// </summary>
+      public static int run() {
+         // Seed the test with a standard butterfly spread. Leg size multipliers will be applied to
+         // each leg to generate more variations to test.
+         var legs = new List<SpreaderLegContract> {
+            new SpreaderLegContract() {
+               security = "Leg1Sec",
+               qty = 1
+            },
+            new SpreaderLegContract() {
+               security = "Leg2Sec",
+               qty = -2
+            },
+            new SpreaderLegContract() {
+               security = "Leg3Sec",
+               qty = 1
+            }
+         };
+         var leg_multipliers = new List<int> { 1, -1, 2, -2, 3, -3 };
+         var contract = new SpreaderContract("Test", legs);
+
+         // Define a book (seed) for each leg. Quantities will be added to each price level for each
+         // leg's book to generate more variations to test.
+         var leg1_book = new Book(
+            bids: new BookSide(levels: new List<PriceLevel> {
+               new PriceLevel(price: 3, qty: 10),
+               new PriceLevel(price: 2, qty: 4),
+               new PriceLevel(price: 1, qty: 6)
+            }),
+            asks: new BookSide(levels: new List<PriceLevel> {
+               new PriceLevel(price: 4, qty: 5),
+               new PriceLevel(price: 5, qty: 7),
+               new PriceLevel(price: 6, qty: 8)
+            }));
+         var leg2_book = new Book(
+            bids: new BookSide(levels: new List<PriceLevel> {
+               new PriceLevel(price: 3, qty: 1),
+               new PriceLevel(price: 2, qty: 7),
+               new PriceLevel(price: 1, qty: 2)
+            }),
+            asks: new BookSide(levels: new List<PriceLevel> {
+               new PriceLevel(price: 4, qty: 3),
+               new PriceLevel(price: 5, qty: 3),
+               new PriceLevel(price: 6, qty: 5)
+            }));
+         var leg3_book = new Book(
+            bids: new BookSide(levels: new List<PriceLevel> {
+               new PriceLevel(price: 3, qty: 2),
+               new PriceLevel(price: 2, qty: 1),
+               new PriceLevel(price: 1, qty: 8)
+            }),
+            asks: new BookSide(levels: new List<PriceLevel> {
+               new PriceLevel(price: 4, qty: 4),
+               new PriceLevel(price: 5, qty: 3),
+               new PriceLevel(price: 6, qty: 4)
+            }));
+         var level_qty_additions = new List<uint> { 1, 2, 3, 4 };
+         var leg_books = new List<Book> { leg1_book, leg2_book, leg3_book };
+
+         for (int i = 0; i < leg_multipliers.Count; i++) {
+            var leg_mult = leg_multipliers[i];
+            for (int j = 0; j < contract.spread_legs.Count; j++) {
+               // Apply leg mult 
+               contract.spread_legs[j].qty *= leg_mult;
+               foreach (var lqa in level_qty_additions) {
+                  foreach(var lb in leg_books) {
+                     // Apply qty addition to bid-levels
+                     for (int level_idx = 0; level_idx < lb.bids.levels.Count; level_idx++) {
+                        var orig_level = lb.bids.levels[level_idx];
+                        lb.bids.levels[level_idx] = orig_level.add_qty(lqa);
+                        run(leg_books, contract);
+                        // Subtract the qty that was just added so each qty addition is applied to
+                        // the original level
+                        lb.bids.levels[level_idx] = lb.bids.levels[level_idx].subtract_qty(lqa);
+                     }
+
+                     // Apply qty additions to ask-levels
+                     for (int level_idx = 0; level_idx < lb.asks.levels.Count; level_idx++) {
+                        var orig_level = lb.asks.levels[level_idx];
+                        lb.asks.levels[level_idx] = orig_level.add_qty(lqa);
+                        run(leg_books, contract);
+                        // Subtract the qty that was just added so each qty addition is applied to
+                        // the original level
+                        lb.asks.levels[level_idx] = lb.asks.levels[level_idx].subtract_qty(lqa);
+                     }
+                  }
+               }
+               // Divide by leg_mult so the each mult is applied to the original leg
+               contract.spread_legs[j].qty /= leg_mult;
+            }
+         }
+         return 0;
+      }
+
+      public static void run(List<Book> leg_books, SpreaderContract contract) {
+         var synth_book = SpreaderBookCalculator.compute_spreader_book(contract, leg_books);
+         for (int i = 0; i < contract.spread_legs.Count; i++) {
+            Console.WriteLine($"Leg{i} (qty {contract.spread_legs[i].qty}): {leg_books[i]}");
+         }
+         Console.WriteLine($"Synthetic Book: {synth_book}");
+         var leg_book_tups = _to_leg_book_tuples(leg_books, contract);
+         var expected_book = _compute_synth_book(leg_book_tups);
+         Console.WriteLine($"Expected Book: {expected_book}");
+         Debug.Assert(expected_book.Equals(synth_book));
+      }
+
+      static List<Tuple<Book, int>> _to_leg_book_tuples(List<Book> leg_books, SpreaderContract contract) {
+         Debug.Assert(leg_books.Count == contract.spread_legs.Count);
+         var rv = new List<Tuple<Book, int>>();
+         for (int i = 0; i < leg_books.Count; i++) {
+            rv.Add(Tuple.Create(leg_books[i], contract.spread_legs[i].qty));
+         }
+         return rv;
+      }
+
+      static List<Tuple<BookSide, int>> _to_leg_book_side_tuples(List<Tuple<Book, int>> leg_books, bool is_bid) {
+         var leg_book_tups = new List<Tuple<BookSide, int>>();
+         for (int i = 0; i < leg_books.Count; i++) {
+            var leg_size = leg_books[i].Item2;
+            var leg_book = leg_books[i].Item1;
+            var is_buy_leg = leg_size > 0;
+            var leg_book_side = is_buy_leg == is_bid ? leg_book.bids : leg_book.asks;
+            leg_book_tups.Add(Tuple.Create(leg_book_side, leg_size));
+         }
+         return leg_book_tups;
+      }
+
+      static Book _compute_synth_book(List<Tuple<Book, int>> leg_books) {
+         var leg_bids = _to_leg_book_side_tuples(leg_books, true);
+         var leg_asks = _to_leg_book_side_tuples(leg_books, false);
+         var synth_bids = _compute_synth_book_side(leg_bids);
+         var synth_asks = _compute_synth_book_side(leg_asks);
+         return new Book(synth_bids, synth_asks);
+      }
+
+      // <summary>
+      // Computes the synthetic book in a simple/unoptimized way, to ensure correctness. Books
+      // generated by the 'optimized' routine, which will be used in practice, should match those
+      // generated by this one.
+      // </summary>
+      static BookSide _compute_synth_book_side(IEnumerable<Tuple<BookSide, int>> leg_books) {
+         // Clone the books so we can mutate them without changing the input 'leg_books'
+         var leg_books_list = leg_books.Select(lb => Tuple.Create(lb.Item1.Clone(), lb.Item2)).ToList();
+         var levels = new List<PriceLevel>();
+         var top_level = _get_top_level(leg_books_list);
+         while (top_level.qty > 0) {
+            levels.Add(top_level);
+            foreach (var lb in leg_books_list) {
+               _remove_qty_from_top(lb.Item1, (int)(top_level.qty * Math.Abs(lb.Item2)));
+            }
+            top_level = _get_top_level(leg_books_list);
+         }
+         return new BookSide(levels);
+      }
+
+      static PriceLevel _get_top_level(IEnumerable<Tuple<BookSide, int>> leg_books) {
+         var leg_sizes = leg_books.Select(lb => lb.Item2).ToList();
+         var top_levels = leg_books.Select(_get_top_level).ToList();
+         var qty = top_levels.Select(l => l.qty).Min();
+         if (qty == 0) {
+            return PriceLevel.empty;
+         }
+         double price = 0;
+         for (int i = 0; i < top_levels.Count; i++) {
+            var leg_price = top_levels[i].price;
+            var leg_size = leg_sizes[i];
+            if (leg_size < 0) {
+               price -= leg_price;
+            } else {
+               price += leg_price;
+            }
+         }
+         return new PriceLevel(price, qty);
+      }
+
+      static PriceLevel _get_top_level(Tuple<BookSide, int> leg_book) {
+         return _get_top_level(leg_book.Item1, leg_book.Item2);
+      }
+
+      static PriceLevel _get_top_level(BookSide book, int leg_size) {
+         if (book.levels.Count == 0) {
+            return PriceLevel.empty;
+         }
+         var first_level = book.levels.First();
+         var abs_leg_size = Math.Abs(leg_size);
+         if (first_level.qty >= abs_leg_size) {
+            return new PriceLevel(first_level.price * abs_leg_size, (uint)(first_level.qty / abs_leg_size));
+         }
+         double price = first_level.qty * first_level.price;
+         var qty_rem = abs_leg_size - first_level.qty;
+         for (int i = 1; i < book.levels.Count; i++) {
+            var level = book.levels[i];
+            if (level.qty >= qty_rem) {
+               price += qty_rem * level.price;
+               return new PriceLevel(price, 1);
+            }
+            price += level.qty * level.price;
+            qty_rem -= level.qty;
+         }
+         return PriceLevel.empty;
+      }
+
+      /// <summary>
+      /// Removes the specified quantity from the top of the book
+      /// </summary>
+      static void _remove_qty_from_top(BookSide book, int qty) {
+         var subtracted_qty = 0;
+         while (subtracted_qty < qty && book.levels.Count > 0) {
+            var first_level = book.levels[0];
+            var qty_to_subtract = qty - subtracted_qty;
+            if (first_level.qty > qty_to_subtract) {
+               first_level = first_level.subtract_qty((uint)qty_to_subtract);
+               book.levels[0] = first_level;
+               return;
+            }
+            book.levels.RemoveAt(0);
+            subtracted_qty += (int)first_level.qty;
+         }
+      }
+   }
+}
@@ -0,0 +1,78 @@
+using System;
+using System.Reflection;
+using System.Runtime.Serialization.Formatters.Binary;
+using System.IO;
+
+namespace SpreaderFrontEnd
+{
+    public class Utils
+    {
+        public static void bin_serialize<T>(T t, Stream str)
+        {
+#pragma warning disable SYSLIB0011
+            BinaryFormatter bf = new BinaryFormatter();
+            bf.Serialize(str, t);
+#pragma warning restore SYSLIB0011
+        }
+
+        public static T bin_deserialize<T>(Stream str)
+        {
+#pragma warning disable SYSLIB0011
+            BinaryFormatter bf = new BinaryFormatter();
+            T rv = (T)bf.Deserialize(str);
+#pragma warning restore SYSLIB0011
+            return rv;
+        }
+
+        public static T? basic_deep_clone<T>(T t)
+        {
+            try
+            {
+                MemoryStream str = new MemoryStream();
+                bin_serialize(t, str);
+                str.Position = 0;
+                return bin_deserialize<T>(str);
+            }
+            catch
+            {
+                return default(T);
+            }
+        }
+
+        public static object? CloneObject(object objSource)
+        {
+            //step : 1 Get the type of source object and create a new instance of that type
+            Type typeSource = objSource.GetType();
+            object? objTarget = Activator.CreateInstance(typeSource);
+            //Step2 : Get all the properties of source object type
+            PropertyInfo[] propertyInfo = typeSource.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
+            //Step : 3 Assign all source property to taget object 's properties
+            foreach (PropertyInfo property in propertyInfo)
+            {
+                //Check whether property can be written to
+                if (property.CanWrite)
+                {
+                    //Step : 4 check whether property type is value type, enum or string type
+                    if (property.PropertyType.IsValueType || property.PropertyType.IsEnum || property.PropertyType.Equals(typeof(System.String)))
+                    {
+                        property.SetValue(objTarget, property.GetValue(objSource, null), null);
+                    }
+                    //else property type is object/complex types, so need to recursively call this method until the end of the tree is reached
+                    else
+                    {
+                        object? objPropertyValue = property.GetValue(objSource, null);
+                        if (objPropertyValue == null)
+                        {
+                            property.SetValue(objTarget, null, null);
+                        }
+                        else
+                        {
+                            property.SetValue(objTarget, CloneObject(objPropertyValue), null);
+                        }
+                    }
+                }
+            }
+            return objTarget;
+        }
+    }
+}
@@ -0,0 +1,23 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v6.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v6.0": {
+      "SpreaderFrontEnd/1.0.0": {
+        "runtime": {
+          "SpreaderFrontEnd.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "SpreaderFrontEnd/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}
@@ -0,0 +1,15 @@
+{
+  "runtimeOptions": {
+    "tfm": "net6.0",
+    "frameworks": [
+      {
+        "name": "Microsoft.NETCore.App",
+        "version": "6.0.0"
+      },
+      {
+        "name": "Microsoft.WindowsDesktop.App",
+        "version": "6.0.0"
+      }
+    ]
+  }
+}
@@ -1,12 +0,0 @@
-function(print_list var)
-  set(CMAKE_MESSAGE_INDENT "")
-  set(_var_str "")
-  foreach(item IN LISTS ${var})
-    set(_var_str "${_var_str}\n  ${item}")
-  endforeach()
-  if ("${ARGN}" STREQUAL "VERBOSE")
-    message(VERBOSE "***${var}:${_var_str}")
-  else()
-    message("***${var}:${_var_str}")
-  endif()
-endfunction()
@@ -1,224 +0,0 @@
-[cmake]: https://cmake.org/
-[cmake ext]: https://marketplace.visualstudio.com/items?itemName=ms-vscode.cmake-tools
-[cmake presets]: https://cmake.org/cmake/help/latest/manual/cmake-presets.7.html
-[cpp ext]: https://marketplace.visualstudio.com/items?itemName=ms-vscode.cpptools
-[clangd ext]: https://marketplace.visualstudio.com/items?itemName=llvm-vs-code-extensions.vscode-clangd
-[dotnet]: https://dotnet.microsoft.com/en-us/download/dotnet
-[ninja build]: https://ninja-build.org/
-[ninja generator]: https://cmake.org/cmake/help/latest/generator/Ninja.html
-[ninja multi-config generator]: https://cmake.org/cmake/help/latest/generator/Ninja%20Multi-Config.html
-[python]: https://www.python.org/
-[py venv]: https://docs.python.org/3/library/venv.html
-[visual studio]: https://visualstudio.microsoft.com/
-[visual studio generator]: https://cmake.org/cmake/help/latest/generator/Visual%20Studio%2017%202022.html
-
-# C++ Intellisense for Spark on Windows (VS Code)
-**Steps**
-1. Install the **[C++ extension][cpp ext]**
-2. Install the **[CMake extension][cmake ext]**
-3. Copy `c_cpp_properties.json` from this folder to `$workspaceFolder/.vscode/`
-4. In the VS Code Command Palette, run **CMake: Select Configure Preset**, then
-   select '**spark**' from the dropdown
-
-**Notes**
-* Intellisense won't work for generated files/types until you build libspark
-
-# C++ Intellisense for Sparkd on Linux (VS Code)
-1. Install the **[CMake extension][cmake ext]**
-2. Install the **[Clangd extension][clangd ext]**
-3. (Optional) Install the **[C++ extension][cpp ext]** (*needed for debugging,
-   but intellisense should work without it*).
-4. If the **[C++ extension][cpp ext]** is installed, disable its intellisense in
-  your workspace settings (*Clangd intellisense is better*)
-   ```
-   "C_Cpp.intelliSenseEngine": "disabled"
-   ```
-5. In the VS Code Command Palette, run **CMake: Select Configure Preset**, then select the
-  **[preset][cmake presets]** you wish to build from the dropdown
-   * *The **Clang** presets may work best with the **Clangd** extension*
-   * *Intellisense won't work for generated files/types until you build libspark*
-
-# Build Spark on Windows
-### Dependencies
-* **[CMake][cmake]** (version >= 3.23)
-* **[Python][python]** (version >= 3.9)
-* **[Visual Studio][visual studio]** (2022)
-* **[Dotnet][dotnet]** (sdk version >= 7.0.0)
-
-### References
-* **[CMakePresets][cmake presets]**
-* **[Visual Studio 17 2022 (CMake generator)][visual studio generator]**
-* **[Python Virtual Environment][py venv]**
-
-### Notes
-* *Run commands from the repo root dir unless otherwise noted*
-
-1. Set up the **[Python virtual environment][py venv]**<br>
-   ```
-   # Create the virtual environment
-   python3 -m venv .venv
-
-   # Activate the virtual environment
-   .venv\bin\activate.bat
-
-   # Update pip
-   python -m pip install --upgrade pip
-
-   # Install packages
-   pip install -r requirements.txt
-   ```
-2. Build
-   * *Run commands in python virtual environment*
-   ```
-   # Configure
-   cmake --preset spark
-
-   # Build Debug
-   cmake --build --preset spark-debug
-   dotnet build spark_client.sln --configuration Debug
-
-   # Build Release
-   cmake --build --preset spark-release
-   dotnet build spark_client.sln --configuration Release
-   ```
-
-# Build Sparkd on Linux
-### **Dependencies**
-* **[CMake][cmake]** (version >= 3.23)
-* **[Ninja Build][ninja build]**
-* **[Python][python]** (version >= 3.9)
-
-### **References**
-* **[CMakePresets][cmake presets]**
-* **[Ninja (CMake generator)][ninja generator]**
-* **[Python Virtual Environment][py venv]**
-* **[Devcontainer](devcontainer)**
-
-### Prerequisites
-* Open repository in a VS Code [Devcontainer](../docker/sparkd/dev/README.md), or
-  create your own [docker container](../docker/sparkd/dev/README.md) in which to build
-
-### Notes
-* *Run commands from the repo root dir unless otherwise noted*<br>
-
-1. Set up the **[Python virtual environment][py venv]**
-   ```
-   # Create the virtual environment
-   python3 -m venv .venv
-
-   # Activate the virtual environment
-   . .venv/bin/activate
-
-   # Update pip
-   python -m pip install --upgrade pip
-
-   # Install packages
-   pip install -r requirements.txt
-   ```
-2. Build
-   * *Run commands in python virtual environment*
-   ```
-   # Configure clang debug
-   cmake --preset sparkd-clang-debug
-
-   # Build clang debug
-   cmake --build --preset spark-clang-debug
-
-   # Configure gcc release
-   cmake --build --preset sparkd-gcc-release
-   
-   # Build gcc release
-   cmake --build --preset sparkd-gcc-release
-   ```
-
-# Build Spark Api Server on Windows
-### **Dependencies**
-* **[CMake][cmake]** (version >= 3.23)
-* **[Python][python]** (version >= 3.9)
-* **[Visual Studio][visual studio]** (version)
-* **[Dotnet][dotnet]** (sdk version >= 7.0.0)
-
-### **References**
-* **[CMakePresets][cmake presets]**
-* **[Visual Studio 17 2022 (CMake generator)][visual studio generator]**
-* **[Python Virtual Environment][py venv]**
-
-### Notes
-* *Run commands from the repo root dir unless otherwise noted*
-
-1. Set up the **[Python Virtual Environment][py venv]**
-   ```
-   # Create the virtual environment
-   python3 -m venv .venv
-
-   # Activate the virtual environment
-   .venv\bin\activate.bat
-
-   # Update pip
-   python -m pip install --upgrade pip
-
-   # Install packages
-   pip install -r requirements.txt
-   ```
-2. Build
-   * *Run in python virtual environment*
-   ```
-   # Configure
-   cmake --preset spark-api-server-windows
-
-   # Build debug
-   cmake --build --preset spark-api-server-windows-debug
-   dotnet build Spark.Api.Server.sln --configuration Debug
-
-   # Build release
-   cmake --build --preset spark-api-server-windows-release
-   dotnet build Spark.Api.Server.sln --configuration Release
-   ```
-
-# Build Spark Api Server on Linux
-### **Dependencies**
-* **[CMake][cmake]** (version >= 3.23)
-* **[Ninja Build][ninja build]**
-* **[Python][python]** (version >= 3.9)
-* **[Dotnet][dotnet]** (sdk version >= 7.0.0)
-
-### **References**
-* **[CMakePresets][cmake presets]**
-* **[Ninja Multi-Config (CMake generator)][ninja multi-config generator]**
-* **[Python Virtual Environment][py venv]**
-
-### Prerequisites
-* Open repository in a VS Code [Devcontainer](../docker/sparkd/dev/README.md), or
-  create your own [docker container](../docker/sparkd/dev/README.md) in which to build
-
-### Notes
-* *Run commands from the repo root dir unless otherwise noted*
-
-1. Set up the **[Python Virtual Environment][py venv]**
-   ```
-   # Create the virtual environment
-   python3 -m venv .venv
-
-   # Activate the virtual environment
-   . .venv/bin/activate
-
-   # Update pip
-   python -m pip install --upgrade pip
-
-   # Install packages
-   pip install -r requirements.txt
-   ```
-2. Build
-   * *Run in python virtual environment*
-   ```
-   # Configure
-   cmake --preset spark-api-server-linux
-
-   # Build debug
-   cmake --build --preset spark-api-server-linux-debug
-   dotnet build Spark.Api.Server.sln --configuration Debug
-
-   # Build release
-   cmake --build --preset spark-api-server-linux-release
-   dotnet build Spark.Api.Server.sln --configuration Release
-   ```
@@ -1,27 +0,0 @@
-{
-  "version": 4,
-  "configurations": [
-    {
-      "name": "Windows",
-      "intelliSenseMode": "windows-msvc-x64",
-      "includePath": [
-        "${workspaceFolder}/src/",
-        "${workspaceFolder}/build/src/",
-        "${workspaceFolder}/externals/windows/include/"
-      ],
-      "defines": ["_WIN32", "__x86_64__"],
-      "browse": {
-        "path": [
-          "${workspaceRoot}/src",
-          "${workspaceRoot}/build/src"
-        ],
-        "limitSymbolsToIncludedHeaders": true
-      },
-      "cStandard": "c17",
-      "cppStandard": "c++17",
-      "configurationProvider": "ms-vscode.cmake-tools",
-      "compilerPath": "C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.34.31933/bin/Hostx64/x64/cl.exe",
-      "mergeConfigurations": true
-    }
-  ]
-}
@@ -46,7 +46,6 @@ function setup_build
    assert_dir $repo_root
    assert_dir $build_root
    set compiler "$argv[1]"
-    set c_compiler (which cc)
    set build_type "$argv[2]"

    if test \( -z "$build_type" \) -o \( \( "$build_type" != debug \) -a \( "$build_type" != release \) \)
@@ -60,7 +59,6 @@ function setup_build
        else
            # set compiler_arg "/usr/lib/ccache/clang++"
            set compiler_arg "clang++"
-            set c_compiler (which clang)
        end
    else if test "$build_type" = release
        set build_type_arg Release
@@ -87,7 +85,7 @@ function setup_build
    rm -rf "$build_dest"
    mkdir -p "$build_dest"
    cd "$build_dest"
-    cmake -G Ninja -DCMAKE_BUILD_TYPE=$build_type_arg -DCMAKE_EXPORT_COMPILE_COMMANDS=1 -DCMAKE_C_COMPILER=$c_compiler -DCMAKE_CXX_COMPILER=$compiler_arg $repo_root
+    cmake -G Ninja -DCMAKE_BUILD_TYPE=$build_type_arg -DCMAKE_EXPORT_COMPILE_COMMANDS=1 -DCMAKE_CXX_COMPILER=$compiler_arg $repo_root
 end

 # The while loop below removes arguments (via shift) as it parses them.
@@ -1,941 +0,0 @@
-{
-	"$schema": "vscode://schemas/color-theme",
-	"type": "dark",
-	"colors": {
-		"activityBar.background": "#111111",
-		"activityBar.border": "#111111",
-		"activityBar.foreground": "#888888",
-		"activityBarBadge.background": "#88cc44",
-		"activityBarBadge.foreground": "#222222",
-		"badge.background": "#88cc44",
-		"badge.foreground": "#222222",
-		"button.background": "#333333",
-		"button.foreground": "#888888",
-		"button.hoverBackground": "#222222",
-		"debugExceptionWidget.background": "#333333",
-		"debugExceptionWidget.border": "#222222",
-		"debugToolBar.background": "#111111",
-		"diffEditor.insertedTextBackground": "#ffdd440c",
-		"diffEditor.insertedTextBorder": "#ffdd44",
-		"diffEditor.removedTextBackground": "#88bbff0c",
-		"diffEditor.removedTextBorder": "#88bbff",
-		"dropdown.background": "#222222",
-		"dropdown.border": "#222222",
-		"dropdown.foreground": "#888888",
-		"editor.background": "#222222",
-		"editor.findMatchBackground": "#44446655",
-		"editor.findMatchHighlightBackground": "#444466aa",
-		"editor.foreground": "#ffffff",
-		"editor.hoverHighlightBackground": "#44446655",
-		"editor.inactiveSelectionBackground": "#44446655",
-		"editor.lineHighlightBackground": "#00000066",
-		"editor.lineHighlightBorder": "#00000000",
-		"editor.rangeHighlightBackground": "#333333",
-		"editor.selectionBackground": "#444466",
-		"editor.selectionHighlightBackground": "#44446655",
-		"editor.wordHighlightBackground": "#44446655",
-		"editor.wordHighlightStrongBackground": "#44446655",
-		"editorBracketMatch.background": "#222222",
-		"editorBracketMatch.border": "#666666",
-		"editorCodeLens.foreground": "#666666",
-		"editorCursor.foreground": "#ffffff",
-		"editorError.foreground": "#ee5500",
-		"editorGroup.border": "#111111",
-		"editorGroup.dropBackground": "#111111bb",
-		"editorGroupHeader.noTabsBackground": "#111111",
-		"editorGroupHeader.tabsBackground": "#111111",
-		"editorGroupHeader.tabsBorder": "#222222",
-		"editorGutter.addedBackground": "#ffdd44",
-		"editorGutter.background": "#222222",
-		"editorGutter.deletedBackground": "#88bbff",
-		"editorGutter.modifiedBackground": "#88bbff",
-		"editorHoverWidget.background": "#333333",
-		"editorHoverWidget.border": "#222222",
-		"editorIndentGuide.background": "#333333",
-		"editorLineNumber.foreground": "#555555",
-		"editorLink.activeForeground": "#bba0ff",
-		"editorMarkerNavigation.background": "#333333",
-		"editorMarkerNavigationError.background": "#88bbff",
-		"editorMarkerNavigationWarning.background": "#88bbff",
-		"editorOverviewRuler.addedForeground": "#ffdd44",
-		"editorOverviewRuler.border": "#222222",
-		"editorOverviewRuler.currentContentForeground": "#333333",
-		"editorOverviewRuler.deletedForeground": "#88bbff",
-		"editorOverviewRuler.errorForeground": "#88bbff",
-		"editorOverviewRuler.findMatchForeground": "#555555",
-		"editorOverviewRuler.incomingContentForeground": "#333333",
-		"editorOverviewRuler.infoForeground": "#bba0ff",
-		"editorOverviewRuler.modifiedForeground": "#88bbff",
-		"editorOverviewRuler.rangeHighlightForeground": "#333333",
-		"editorOverviewRuler.selectionHighlightForeground": "#555555",
-		"editorOverviewRuler.warningForeground": "#88bbff",
-		"editorOverviewRuler.wordHighlightForeground": "#333333",
-		"editorOverviewRuler.wordHighlightStrongForeground": "#555555",
-		"editorRuler.foreground": "#ffffff",
-		"editorSuggestWidget.background": "#333333",
-		"editorSuggestWidget.border": "#333333",
-		"editorSuggestWidget.foreground": "#888888",
-		"editorSuggestWidget.highlightForeground": "#ffffff",
-		"editorSuggestWidget.selectedBackground": "#666666",
-		"editorWarning.border": "#00000000",
-		"editorWarning.foreground": "#88bbff",
-		"editorWhitespace.foreground": "#333333",
-		"editorWidget.background": "#333333",
-		"editorWidget.border": "#333333",
-		"errorForeground": "#88bbff",
-		"extensionButton.prominentBackground": "#333333",
-		"extensionButton.prominentForeground": "#ffffff",
-		"extensionButton.prominentHoverBackground": "#555555",
-		"focusBorder": "#666666",
-		"foreground": "#ffffff",
-		"gitDecoration.modifiedResourceForeground": "#cccccc",
-		"gitDecoration.untrackedResourceForeground": "#cccccc",
-		"input.background": "#333333",
-		"input.border": "#333333",
-		"input.foreground": "#ffffff",
-		"input.placeholderForeground": "#555555",
-		"inputOption.activeBorder": "#555555",
-		"inputValidation.errorBackground": "#333333",
-		"inputValidation.errorBorder": "#88bbff",
-		"inputValidation.infoBackground": "#333333",
-		"inputValidation.infoBorder": "#bba0ff",
-		"inputValidation.warningBackground": "#333333",
-		"inputValidation.warningBorder": "#88bbff",
-		"list.activeSelectionBackground": "#111111",
-		"list.activeSelectionForeground": "#ffffff",
-		"list.dropBackground": "#111111bf",
-		"list.focusBackground": "#222222",
-		"list.focusForeground": "#ffffff",
-		"list.highlightForeground": "#ffffff",
-		"list.hoverBackground": "#333333",
-		"list.hoverForeground": "#ffffff",
-		"list.inactiveSelectionBackground": "#000000",
-		"list.inactiveSelectionForeground": "#ffffff",
-		"menu.background": "#333333",
-		"menu.foreground": "#ffffff",
-		"merge.border": "#222222",
-		"merge.currentContentBackground": "#333333",
-		"merge.currentHeaderBackground": "#555555",
-		"merge.incomingContentBackground": "#555555",
-		"merge.incomingHeaderBackground": "#666666",
-		"panel.background": "#111111",
-		"panel.border": "#111111",
-		"panelTitle.activeBorder": "#ffffff",
-		"panelTitle.activeForeground": "#ffffff",
-		"panelTitle.inactiveForeground": "#888888",
-		"peekView.border": "#222222",
-		"peekViewEditor.background": "#333333",
-		"peekViewEditor.matchHighlightBackground": "#555555",
-		"peekViewEditorGutter.background": "#333333",
-		"peekViewResult.background": "#333333",
-		"peekViewResult.fileForeground": "#888888",
-		"peekViewResult.lineForeground": "#888888",
-		"peekViewResult.matchHighlightBackground": "#555555",
-		"peekViewResult.selectionBackground": "#333333",
-		"peekViewResult.selectionForeground": "#ffffff",
-		"peekViewTitle.background": "#333333",
-		"peekViewTitleDescription.foreground": "#888888",
-		"peekViewTitleLabel.foreground": "#ffffff",
-		"pickerGroup.border": "#222222",
-		"pickerGroup.foreground": "#555555",
-		"progressBar.background": "#333333",
-		"scrollbar.shadow": "#191919",
-		"scrollbarSlider.activeBackground": "#ffffff12",
-		"scrollbarSlider.background": "#ffffff12",
-		"scrollbarSlider.hoverBackground": "#ffffff12",
-		"selection.background": "#2255aa",
-		"sideBar.background": "#111111",
-		"sideBar.border": "#111111",
-		"sideBar.foreground": "#888888",
-		"sideBarSectionHeader.background": "#111111",
-		"sideBarSectionHeader.foreground": "#666666",
-		"sideBarTitle.foreground": "#555555",
-		"statusBar.background": "#111111",
-		"statusBar.border": "#111111",
-		"statusBar.debuggingBackground": "#666666",
-		"statusBar.debuggingForeground": "#ffffff",
-		"statusBar.foreground": "#666666",
-		"statusBar.noFolderBackground": "#111111",
-		"statusBar.noFolderForeground": "#666666",
-		"statusBarItem.activeBackground": "#222222",
-		"statusBarItem.hoverBackground": "#222222",
-		"statusBarItem.prominentBackground": "#333333",
-		"statusBarItem.prominentHoverBackground": "#444444",
-		"tab.activeBackground": "#222222",
-		"tab.border": "#111111",
-		"tab.inactiveBackground": "#111111",
-		"tab.inactiveForeground": "#888888",
-		"tab.unfocusedActiveBorder": "#888888",
-		"tab.unfocusedActiveForeground": "#888888",
-		"tab.unfocusedInactiveForeground": "#888888",
-		"terminal.ansiBlack": "#333333",
-		"terminal.ansiBlue": "#88bbff",
-		"terminal.ansiBrightBlack": "#666666",
-		"terminal.ansiBrightBlue": "#88bbff",
-		"terminal.ansiBrightCyan": "#bba0ff",
-		"terminal.ansiBrightGreen": "#ffdd44",
-		"terminal.ansiBrightMagenta": "#88bbff",
-		"terminal.ansiBrightRed": "#88bbff",
-		"terminal.ansiBrightWhite": "#ffffff",
-		"terminal.ansiBrightYellow": "#88cc44",
-		"terminal.ansiCyan": "#bba0ff",
-		"terminal.ansiGreen": "#ffdd44",
-		"terminal.ansiMagenta": "#88bbff",
-		"terminal.ansiRed": "#88bbff",
-		"terminal.ansiWhite": "#ffffff",
-		"terminal.ansiYellow": "#88cc44",
-		"terminal.background": "#151515",
-		"terminal.foreground": "#ffffff",
-		"titleBar.activeBackground": "#111111",
-		"titleBar.activeForeground": "#888888",
-		"titleBar.inactiveBackground": "#111111",
-		"titleBar.inactiveForeground": "#555555",
-		"walkThrough.embeddedEditorBackground": "#111111",
-		"widget.shadow": "#111111",
-		//"activityBar.activeBorder": "#888888",
-		//"activityBar.dropBorder": "#888888",
-		//"activityBar.inactiveForeground": "#88888866",
-		//"banner.background": "#111111",
-		//"banner.foreground": "#ffffff",
-		//"banner.iconForeground": "#3794ff",
-		//"bookmarks.lineBackground": "#00000000",
-		//"bookmarks.lineBorder": "#00000000",
-		//"bookmarks.overviewRuler": "#157efb88",
-		//"breadcrumb.activeSelectionForeground": "#ffffff",
-		//"breadcrumb.background": "#222222",
-		//"breadcrumb.focusForeground": "#ffffff",
-		//"breadcrumb.foreground": "#ffffffcc",
-		//"breadcrumbPicker.background": "#333333",
-		//"button.secondaryBackground": "#3a3d41",
-		//"button.secondaryForeground": "#ffffff",
-		//"button.secondaryHoverBackground": "#45494e",
-		//"charts.blue": "#3794ff",
-		//"charts.foreground": "#ffffff",
-		//"charts.green": "#89d185",
-		//"charts.lines": "#ffffff80",
-		//"charts.orange": "#d18616",
-		//"charts.purple": "#b180d7",
-		//"charts.red": "#ee5500",
-		//"charts.yellow": "#88bbff",
-		//"checkbox.background": "#222222",
-		//"checkbox.border": "#222222",
-		//"checkbox.foreground": "#888888",
-		//"debugConsole.errorForeground": "#88bbff",
-		//"debugConsole.infoForeground": "#3794ff",
-		//"debugConsole.sourceForeground": "#ffffff",
-		//"debugConsole.warningForeground": "#88bbff",
-		//"debugConsoleInputIcon.foreground": "#ffffff",
-		//"debugIcon.breakpointCurrentStackframeForeground": "#ffcc00",
-		//"debugIcon.breakpointDisabledForeground": "#848484",
-		//"debugIcon.breakpointForeground": "#e51400",
-		//"debugIcon.breakpointStackframeForeground": "#89d185",
-		//"debugIcon.breakpointUnverifiedForeground": "#848484",
-		//"debugIcon.continueForeground": "#75beff",
-		//"debugIcon.disconnectForeground": "#f48771",
-		//"debugIcon.pauseForeground": "#75beff",
-		//"debugIcon.restartForeground": "#89d185",
-		//"debugIcon.startForeground": "#89d185",
-		//"debugIcon.stepBackForeground": "#75beff",
-		//"debugIcon.stepIntoForeground": "#75beff",
-		//"debugIcon.stepOutForeground": "#75beff",
-		//"debugIcon.stepOverForeground": "#75beff",
-		//"debugIcon.stopForeground": "#f48771",
-		//"debugTokenExpression.boolean": "#4e94ce",
-		//"debugTokenExpression.error": "#f48771",
-		//"debugTokenExpression.name": "#c586c0",
-		//"debugTokenExpression.number": "#b5cea8",
-		//"debugTokenExpression.string": "#ce9178",
-		//"debugTokenExpression.value": "#cccccc99",
-		//"debugView.exceptionLabelBackground": "#6c2022",
-		//"debugView.exceptionLabelForeground": "#ffffff",
-		//"debugView.stateLabelBackground": "#88888844",
-		//"debugView.stateLabelForeground": "#ffffff",
-		//"debugView.valueChangedHighlight": "#569cd6",
-		//"descriptionForeground": "#ffffffb3",
-		//"diffEditor.diagonalFill": "#cccccc33",
-		//"editor.findRangeHighlightBackground": "#3a3d4166",
-		//"editor.focusedStackFrameHighlightBackground": "#7abd7a4d",
-		//"editor.foldBackground": "#4444664d",
-		//"editor.inlineValuesBackground": "#ffc80033",
-		//"editor.inlineValuesForeground": "#ffffff80",
-		//"editor.linkedEditingBackground": "#ff00004d",
-		//"editor.snippetFinalTabstopHighlightBorder": "#525252",
-		//"editor.snippetTabstopHighlightBackground": "#7c7c7c4d",
-		//"editor.stackFrameHighlightBackground": "#ffff0033",
-		//"editor.symbolHighlightBackground": "#444466aa",
-		//"editorActiveLineNumber.foreground": "#c6c6c6",
-		//"editorBracketHighlight.foreground1": "#ffd700",
-		//"editorBracketHighlight.foreground2": "#da70d6",
-		//"editorBracketHighlight.foreground3": "#179fff",
-		//"editorBracketHighlight.foreground4": "#00000000",
-		//"editorBracketHighlight.foreground5": "#00000000",
-		//"editorBracketHighlight.foreground6": "#00000000",
-		//"editorBracketHighlight.unexpectedBracket.foreground": "#ff1212cc",
-		//"editorBracketPairGuide.activeBackground1": "#00000000",
-		//"editorBracketPairGuide.activeBackground2": "#00000000",
-		//"editorBracketPairGuide.activeBackground3": "#00000000",
-		//"editorBracketPairGuide.activeBackground4": "#00000000",
-		//"editorBracketPairGuide.activeBackground5": "#00000000",
-		//"editorBracketPairGuide.activeBackground6": "#00000000",
-		//"editorBracketPairGuide.background1": "#00000000",
-		//"editorBracketPairGuide.background2": "#00000000",
-		//"editorBracketPairGuide.background3": "#00000000",
-		//"editorBracketPairGuide.background4": "#00000000",
-		//"editorBracketPairGuide.background5": "#00000000",
-		//"editorBracketPairGuide.background6": "#00000000",
-		//"editorGhostText.foreground": "#ffffff56",
-		//"editorGutter.commentRangeForeground": "#c5c5c5",
-		//"editorGutter.foldingControlForeground": "#c5c5c5",
-		//"editorHint.foreground": "#eeeeeeb3",
-		//"editorHoverWidget.foreground": "#ffffff",
-		//"editorHoverWidget.highlightForeground": "#ffffff",
-		//"editorHoverWidget.statusBarBackground": "#3d3d3d",
-		//"editorIndentGuide.activeBackground": "#333333",
-		//"editorInfo.foreground": "#3794ff",
-		//"editorInlayHint.background": "#88cc4499",
-		//"editorInlayHint.foreground": "#222222cc",
-		//"editorInlayHint.parameterBackground": "#88cc4499",
-		//"editorInlayHint.parameterForeground": "#222222cc",
-		//"editorInlayHint.typeBackground": "#88cc4499",
-		//"editorInlayHint.typeForeground": "#222222cc",
-		//"editorLightBulb.foreground": "#ffcc00",
-		//"editorLightBulbAutoFix.foreground": "#75beff",
-		//"editorLineNumber.activeForeground": "#c6c6c6",
-		//"editorMarkerNavigationError.headerBackground": "#88bbff1a",
-		//"editorMarkerNavigationInfo.background": "#3794ff",
-		//"editorMarkerNavigationInfo.headerBackground": "#3794ff1a",
-		//"editorMarkerNavigationWarning.headerBackground": "#88bbff1a",
-		//"editorOverviewRuler.bracketMatchForeground": "#a0a0a0",
-		//"editorOverviewRuler.commonContentForeground": "#60606066",
-		//"editorOverviewRuler.unicodeForeground": "#d186167e",
-		//"editorPane.background": "#222222",
-		//"editorSuggestWidget.focusHighlightForeground": "#ffffff",
-		//"editorSuggestWidget.selectedForeground": "#ffffff",
-		//"editorSuggestWidgetStatus.foreground": "#88888880",
-		//"editorUnicodeHighlight.border": "#bd9b03",
-		//"editorUnnecessaryCode.opacity": "#000000aa",
-		//"editorWidget.foreground": "#ffffff",
-		//"extensionBadge.remoteBackground": "#88cc44",
-		//"extensionBadge.remoteForeground": "#222222",
-		//"extensionIcon.preReleaseForeground": "#1d9271",
-		//"extensionIcon.starForeground": "#ff8e00",
-		//"extensionIcon.verifiedForeground": "#3794ff",
-		//"gitDecoration.addedResourceForeground": "#81b88b",
-		//"gitDecoration.conflictingResourceForeground": "#e4676b",
-		//"gitDecoration.deletedResourceForeground": "#c74e39",
-		//"gitDecoration.ignoredResourceForeground": "#8c8c8c",
-		//"gitDecoration.renamedResourceForeground": "#73c991",
-		//"gitDecoration.stageDeletedResourceForeground": "#c74e39",
-		//"gitDecoration.stageModifiedResourceForeground": "#e2c08d",
-		//"gitDecoration.submoduleResourceForeground": "#8db9e2",
-		//"gitlens.closedAutolinkedIssueIconColor": "#a371f7",
-		//"gitlens.closedPullRequestIconColor": "#f85149",
-		//"gitlens.decorations.addedForegroundColor": "#81b88b",
-		//"gitlens.decorations.branchAheadForegroundColor": "#35b15e",
-		//"gitlens.decorations.branchBehindForegroundColor": "#b15e35",
-		//"gitlens.decorations.branchDivergedForegroundColor": "#d8af1b",
-		//"gitlens.decorations.branchMissingUpstreamForegroundColor": "#c74e39",
-		//"gitlens.decorations.branchUnpublishedForegroundColor": "#35b15e",
-		//"gitlens.decorations.branchUpToDateForegroundColor": "#888888",
-		//"gitlens.decorations.copiedForegroundColor": "#73c991",
-		//"gitlens.decorations.deletedForegroundColor": "#c74e39",
-		//"gitlens.decorations.ignoredForegroundColor": "#8c8c8c",
-		//"gitlens.decorations.modifiedForegroundColor": "#cccccc",
-		//"gitlens.decorations.renamedForegroundColor": "#73c991",
-		//"gitlens.decorations.untrackedForegroundColor": "#cccccc",
-		//"gitlens.gutterBackgroundColor": "#ffffff13",
-		//"gitlens.gutterForegroundColor": "#bebebe",
-		//"gitlens.gutterUncommittedForegroundColor": "#00bcf299",
-		//"gitlens.lineHighlightBackgroundColor": "#00bcf233",
-		//"gitlens.lineHighlightOverviewRulerColor": "#00bcf299",
-		//"gitlens.mergedPullRequestIconColor": "#a371f7",
-		//"gitlens.openAutolinkedIssueIconColor": "#3fb950",
-		//"gitlens.openPullRequestIconColor": "#3fb950",
-		//"gitlens.trailingLineBackgroundColor": "#00000000",
-		//"gitlens.trailingLineForegroundColor": "#99999959",
-		//"gitlens.unpublishedCommitIconColor": "#35b15e",
-		//"gitlens.unpulledChangesIconColor": "#b15e35",
-		//"gitlens.unpushlishedChangesIconColor": "#35b15e",
-		//"icon.foreground": "#c5c5c5",
-		//"inputOption.activeBackground": "#66666666",
-		//"inputOption.activeForeground": "#ffffff",
-		//"inputOption.hoverBackground": "#5a5d5e80",
-		//"interactive.activeCodeBorder": "#222222",
-		//"interactive.inactiveCodeBorder": "#000000",
-		//"keybindingLabel.background": "#8080802b",
-		//"keybindingLabel.border": "#33333399",
-		//"keybindingLabel.bottomBorder": "#44444499",
-		//"keybindingLabel.foreground": "#cccccc",
-		//"keybindingTable.headerBackground": "#ffffff0a",
-		//"keybindingTable.rowsBackground": "#ffffff0a",
-		//"list.deemphasizedForeground": "#8c8c8c",
-		//"list.errorForeground": "#f88070",
-		//"list.filterMatchBackground": "#444466aa",
-		//"list.focusHighlightForeground": "#ffffff",
-		//"list.focusOutline": "#666666",
-		//"list.invalidItemForeground": "#b89500",
-		//"list.warningForeground": "#cca700",
-		//"listFilterWidget.background": "#653723",
-		//"listFilterWidget.noMatchesOutline": "#be1100",
-		//"listFilterWidget.outline": "#00000000",
-		//"menu.selectionBackground": "#111111",
-		//"menu.selectionForeground": "#ffffff",
-		//"menu.separatorBackground": "#bbbbbb",
-		//"menubar.selectionBackground": "#ffffff1a",
-		//"menubar.selectionForeground": "#888888",
-		//"merge.commonContentBackground": "#60606029",
-		//"merge.commonHeaderBackground": "#60606066",
-		//"minimap.errorHighlight": "#ff1212b3",
-		//"minimap.findMatchHighlight": "#d18616",
-		//"minimap.foregroundOpacity": "#000000",
-		//"minimap.selectionHighlight": "#264f78",
-		//"minimap.selectionOccurrenceHighlight": "#676767",
-		//"minimap.unicodeHighlight": "#d18616",
-		//"minimap.warningHighlight": "#88bbff",
-		//"minimapGutter.addedBackground": "#587c0c",
-		//"minimapGutter.deletedBackground": "#94151b",
-		//"minimapGutter.modifiedBackground": "#0c7d9d",
-		//"minimapSlider.activeBackground": "#ffffff09",
-		//"minimapSlider.background": "#ffffff09",
-		//"minimapSlider.hoverBackground": "#ffffff09",
-		//"notebook.cellBorderColor": "#000000",
-		//"notebook.cellEditorBackground": "#111111",
-		//"notebook.cellInsertionIndicator": "#666666",
-		//"notebook.cellStatusBarItemHoverBackground": "#ffffff26",
-		//"notebook.cellToolbarSeparator": "#80808059",
-		//"notebook.focusedCellBorder": "#666666",
-		//"notebook.focusedEditorBorder": "#666666",
-		//"notebook.inactiveFocusedCellBorder": "#000000",
-		//"notebook.selectedCellBackground": "#000000",
-		//"notebook.selectedCellBorder": "#000000",
-		//"notebook.symbolHighlightBackground": "#ffffff0b",
-		//"notebookScrollbarSlider.activeBackground": "#ffffff12",
-		//"notebookScrollbarSlider.background": "#ffffff12",
-		//"notebookScrollbarSlider.hoverBackground": "#ffffff12",
-		//"notebookStatusErrorIcon.foreground": "#88bbff",
-		//"notebookStatusRunningIcon.foreground": "#ffffff",
-		//"notebookStatusSuccessIcon.foreground": "#89d185",
-		//"notificationCenterHeader.background": "#424242",
-		//"notificationLink.foreground": "#3794ff",
-		//"notifications.background": "#333333",
-		//"notifications.border": "#424242",
-		//"notifications.foreground": "#ffffff",
-		//"notificationsErrorIcon.foreground": "#ee5500",
-		//"notificationsInfoIcon.foreground": "#3794ff",
-		//"notificationsWarningIcon.foreground": "#88bbff",
-		//"panel.dropBorder": "#ffffff",
-		//"panelSection.border": "#111111",
-		//"panelSection.dropBackground": "#111111bb",
-		//"panelSectionHeader.background": "#80808033",
-		//"ports.iconRunningProcessForeground": "#88cc44",
-		//"problemsErrorIcon.foreground": "#ee5500",
-		//"problemsInfoIcon.foreground": "#3794ff",
-		//"problemsWarningIcon.foreground": "#88bbff",
-		//"quickInput.background": "#333333",
-		//"quickInput.foreground": "#ffffff",
-		//"quickInputList.focusBackground": "#111111",
-		//"quickInputList.focusForeground": "#ffffff",
-		//"quickInputTitle.background": "#ffffff1b",
-		//"sash.hoverBorder": "#666666",
-		//"scm.providerBorder": "#454545",
-		//"searchEditor.findMatchBackground": "#44446670",
-		//"searchEditor.textInputBorder": "#333333",
-		//"settings.checkboxBackground": "#222222",
-		//"settings.checkboxBorder": "#222222",
-		//"settings.checkboxForeground": "#888888",
-		//"settings.dropdownBackground": "#222222",
-		//"settings.dropdownBorder": "#222222",
-		//"settings.dropdownForeground": "#888888",
-		//"settings.dropdownListBorder": "#333333",
-		//"settings.focusedRowBackground": "#80808024",
-		//"settings.focusedRowBorder": "#ffffff1f",
-		//"settings.headerForeground": "#e7e7e7",
-		//"settings.modifiedItemIndicator": "#0c7d9d",
-		//"settings.numberInputBackground": "#333333",
-		//"settings.numberInputBorder": "#333333",
-		//"settings.numberInputForeground": "#ffffff",
-		//"settings.rowHoverBackground": "#80808012",
-		//"settings.textInputBackground": "#333333",
-		//"settings.textInputBorder": "#333333",
-		//"settings.textInputForeground": "#ffffff",
-		//"sideBar.dropBackground": "#111111bb",
-		//"sideBySideEditor.horizontalBorder": "#111111",
-		//"sideBySideEditor.verticalBorder": "#111111",
-		//"statusBar.debuggingBorder": "#111111",
-		//"statusBar.noFolderBorder": "#111111",
-		//"statusBarItem.compactHoverBackground": "#ffffff33",
-		//"statusBarItem.errorBackground": "#0066eb",
-		//"statusBarItem.errorForeground": "#ffffff",
-		//"statusBarItem.prominentForeground": "#666666",
-		//"statusBarItem.remoteBackground": "#88cc44",
-		//"statusBarItem.remoteForeground": "#222222",
-		//"statusBarItem.warningBackground": "#0066eb",
-		//"statusBarItem.warningForeground": "#ffffff",
-		//"symbolIcon.arrayForeground": "#ffffff",
-		//"symbolIcon.booleanForeground": "#ffffff",
-		//"symbolIcon.classForeground": "#ee9d28",
-		//"symbolIcon.colorForeground": "#ffffff",
-		//"symbolIcon.constantForeground": "#ffffff",
-		//"symbolIcon.constructorForeground": "#b180d7",
-		//"symbolIcon.enumeratorForeground": "#ee9d28",
-		//"symbolIcon.enumeratorMemberForeground": "#75beff",
-		//"symbolIcon.eventForeground": "#ee9d28",
-		//"symbolIcon.fieldForeground": "#75beff",
-		//"symbolIcon.fileForeground": "#ffffff",
-		//"symbolIcon.folderForeground": "#ffffff",
-		//"symbolIcon.functionForeground": "#b180d7",
-		//"symbolIcon.interfaceForeground": "#75beff",
-		//"symbolIcon.keyForeground": "#ffffff",
-		//"symbolIcon.keywordForeground": "#ffffff",
-		//"symbolIcon.methodForeground": "#b180d7",
-		//"symbolIcon.moduleForeground": "#ffffff",
-		//"symbolIcon.namespaceForeground": "#ffffff",
-		//"symbolIcon.nullForeground": "#ffffff",
-		//"symbolIcon.numberForeground": "#ffffff",
-		//"symbolIcon.objectForeground": "#ffffff",
-		//"symbolIcon.operatorForeground": "#ffffff",
-		//"symbolIcon.packageForeground": "#ffffff",
-		//"symbolIcon.propertyForeground": "#ffffff",
-		//"symbolIcon.referenceForeground": "#ffffff",
-		//"symbolIcon.snippetForeground": "#ffffff",
-		//"symbolIcon.stringForeground": "#ffffff",
-		//"symbolIcon.structForeground": "#ffffff",
-		//"symbolIcon.textForeground": "#ffffff",
-		//"symbolIcon.typeParameterForeground": "#ffffff",
-		//"symbolIcon.unitForeground": "#ffffff",
-		//"symbolIcon.variableForeground": "#75beff",
-		//"tab.activeForeground": "#ffffff",
-		//"tab.activeModifiedBorder": "#3399cc",
-		//"tab.inactiveModifiedBorder": "#3399cc80",
-		//"tab.lastPinnedBorder": "#585858",
-		//"tab.unfocusedActiveBackground": "#222222",
-		//"tab.unfocusedActiveModifiedBorder": "#3399cc80",
-		//"tab.unfocusedInactiveBackground": "#111111",
-		//"tab.unfocusedInactiveModifiedBorder": "#3399cc40",
-		//"terminal.border": "#111111",
-		//"terminal.dropBackground": "#111111bb",
-		//"terminal.selectionBackground": "#ffffff40",
-		//"testing.iconErrored": "#f14c4c",
-		//"testing.iconFailed": "#f14c4c",
-		//"testing.iconPassed": "#73c991",
-		//"testing.iconQueued": "#cca700",
-		//"testing.iconSkipped": "#848484",
-		//"testing.iconUnset": "#848484",
-		//"testing.message.error.decorationForeground": "#ee5500",
-		//"testing.message.error.lineBackground": "#ff000033",
-		//"testing.message.info.decorationForeground": "#ffffff80",
-		//"testing.peekBorder": "#ee5500",
-		//"testing.peekHeaderBackground": "#ee55001a",
-		//"testing.runAction": "#73c991",
-		//"textBlockQuote.background": "#7f7f7f1a",
-		//"textBlockQuote.border": "#007acc80",
-		//"textCodeBlock.background": "#0a0a0a66",
-		//"textLink.activeForeground": "#3794ff",
-		//"textLink.foreground": "#3794ff",
-		//"textPreformat.foreground": "#d7ba7d",
-		//"textSeparator.foreground": "#ffffff2e",
-		//"toolbar.activeBackground": "#63666750",
-		//"toolbar.hoverBackground": "#5a5d5e50",
-		//"tree.indentGuidesStroke": "#585858",
-		//"tree.tableColumnsBorder": "#cccccc20",
-		//"tree.tableOddRowsBackground": "#ffffff0a",
-		//"welcomePage.progress.background": "#333333",
-		//"welcomePage.progress.foreground": "#3794ff",
-		//"welcomePage.tileBackground": "#333333",
-		//"welcomePage.tileHoverBackground": "#3d3d3d",
-		//"welcomePage.tileShadow": "#111111",
-		//"activityBar.activeBackground": null,
-		//"activityBar.activeFocusBorder": null,
-		//"button.border": null,
-		//"contrastActiveBorder": null,
-		//"contrastBorder": null,
-		//"debugToolBar.border": null,
-		//"diffEditor.border": null,
-		//"dropdown.listBackground": null,
-		//"editor.findMatchBorder": null,
-		//"editor.findMatchHighlightBorder": null,
-		//"editor.findRangeHighlightBorder": null,
-		//"editor.rangeHighlightBorder": null,
-		//"editor.selectionForeground": null,
-		//"editor.selectionHighlightBorder": null,
-		//"editor.snippetFinalTabstopHighlightBackground": null,
-		//"editor.snippetTabstopHighlightBorder": null,
-		//"editor.symbolHighlightBorder": null,
-		//"editor.wordHighlightBorder": null,
-		//"editor.wordHighlightStrongBorder": null,
-		//"editorCursor.background": null,
-		//"editorError.background": null,
-		//"editorError.border": null,
-		//"editorGhostText.background": null,
-		//"editorGhostText.border": null,
-		//"editorGroup.emptyBackground": null,
-		//"editorGroup.focusedEmptyBorder": null,
-		//"editorGroupHeader.border": null,
-		//"editorHint.border": null,
-		//"editorInfo.background": null,
-		//"editorInfo.border": null,
-		//"editorOverviewRuler.background": null,
-		//"editorSuggestWidget.selectedIconForeground": null,
-		//"editorUnnecessaryCode.border": null,
-		//"editorWarning.background": null,
-		//"editorWidget.resizeBorder": null,
-		//"inputValidation.errorForeground": null,
-		//"inputValidation.infoForeground": null,
-		//"inputValidation.warningForeground": null,
-		//"list.activeSelectionIconForeground": null,
-		//"list.filterMatchBorder": null,
-		//"list.inactiveFocusBackground": null,
-		//"list.inactiveFocusOutline": null,
-		//"list.inactiveSelectionIconForeground": null,
-		//"menu.border": null,
-		//"menu.selectionBorder": null,
-		//"menubar.selectionBorder": null,
-		//"minimap.background": null,
-		//"notebook.cellHoverBackground": null,
-		//"notebook.focusedCellBackground": null,
-		//"notebook.inactiveSelectedCellBorder": null,
-		//"notebook.outputContainerBackgroundColor": null,
-		//"notebook.outputContainerBorderColor": null,
-		//"notificationCenter.border": null,
-		//"notificationCenterHeader.foreground": null,
-		//"notificationToast.border": null,
-		//"panelInput.border": null,
-		//"panelSectionHeader.border": null,
-		//"panelSectionHeader.foreground": null,
-		//"peekViewEditor.matchHighlightBorder": null,
-		//"quickInput.list.focusBackground": null,
-		//"quickInputList.focusIconForeground": null,
-		//"searchEditor.findMatchBorder": null,
-		//"sideBarSectionHeader.border": null,
-		//"tab.activeBorder": null,
-		//"tab.activeBorderTop": null,
-		//"tab.hoverBackground": null,
-		//"tab.hoverBorder": null,
-		//"tab.hoverForeground": null,
-		//"tab.unfocusedActiveBorderTop": null,
-		//"tab.unfocusedHoverBackground": null,
-		//"tab.unfocusedHoverBorder": null,
-		//"tab.unfocusedHoverForeground": null,
-		//"terminal.tab.activeBorder": null,
-		//"terminalCursor.background": null,
-		//"terminalCursor.foreground": null,
-		//"testing.message.info.lineBackground": null,
-		//"titleBar.border": null,
-		//"toolbar.hoverOutline": null,
-		//"welcomePage.background": null,
-		//"window.activeBorder": null,
-		//"window.inactiveBorder": null
-	},
-	"tokenColors": [
-		{
-			"scope": [
-				"variable.language.this"
-			],
-			"settings": {
-				"fontStyle": ""
-			}
-		},
-		{
-			"scope": "markup.bold",
-			"settings": {
-				"fontStyle": "bold"
-			}
-		},
-		{
-			"scope": [
-				"invalid",
-				"markup.italic",
-				"markup.quote"
-			],
-			"settings": {
-				"fontStyle": "italic"
-			}
-		},
-		{
-			"scope": "markup.underline",
-			"settings": {
-				"fontStyle": "underline"
-			}
-		},
-		{
-			"scope": [
-				"source.js.jsx punctuation.section.embedded",
-				"entity.name.tag",
-				"string.other.link.description.title",
-				"support.constant",
-				"support.variable",
-				"support.type",
-				"variable.other.class",
-				"support.class.builtin.js",
-				"support.class.console.js",
-				"meta.property-value",
-				"variable.parameter.keyframe-list",
-				"meta.at-rule.keyframes entity.name.function",
-				"expression.embedded.vue punctuation.definition"
-			],
-			"settings": {
-				"foreground": "#BBA0FF",
-				"fontStyle": ""
-			}
-		},
-		{
-			"scope": [
-				"entity.other.attribute-name.pseudo-class.css",
-				"entity.name.type.object.console",
-				"variable.language",
-				"variable.parameter.function.language.special.self.python",
-				"storage.type",
-				"entity.other.attribute-name.pseudo-element.css"
-			],
-			"settings": {
-				"foreground": "#BBA0FF",
-				"fontStyle": "italic"
-			}
-		},
-		{
-			"scope": [
-				"punctuation.definition.string.template"
-			],
-			"settings": {
-				"foreground": "#BBA0FF",
-				"fontStyle": "bold"
-			}
-		},
-		{
-			"scope": [
-				"entity.other.attribute-name.class.css",
-				"entity.other.attribute-name.parent-selector-suffix.css",
-				"entity.other.attribute-name.parent-selector-suffix.css punctuation.definition.entity.css",
-				"meta.definition.function",
-				"markup.underline.link",
-				"markup.inserted",
-				"meta.function-call",
-				"meta.instance.constructor",
-				"meta.attribute-with-value.class string",
-				"string.other.ref",
-				"string.other.restructuredtext.ref",
-				"variable.function",
-				"entity.name.type",
-				"entity.name.function",
-				"variable.other.object.property",
-				"punctuation.separator.key-value",
-				"meta.definition.function.js",
-				"support.class.component.js",
-				"entity.other.inherited-class",
-				"support.class",
-				"support.function.misc",
-				"support.function",
-				"entity.other.attribute-name.id.css",
-				"entity.other.attribute-name.id.css punctuation",
-				"entity.other.attribute-name.class.css punctuation",
-				"meta.function-call support.function.construct",
-				"entity.other.attribute-name"
-			],
-			"settings": {
-				"foreground": "#FFDD44"
-			}
-		},
-		{
-			"scope": "storage.type.function.arrow",
-			"settings": {
-				"foreground": "#FFDD44",
-				"fontStyle": ""
-			}
-		},
-		{
-			"scope": [
-				"entity.name.section",
-				"constant.numeric.line-number.match.find-in-files",
-				"markup.heading",
-				"markup.changed",
-				"meta.attribute-with-value.id string",
-				"string",
-				"punctuation.definition.string.begin",
-				"punctuation.definition.string.end",
-				"meta.attribute-selector"
-			],
-			"settings": {
-				"foreground": "#88CC44"
-			}
-		},
-		{
-			"scope": [
-				"keyword",
-				"keyword.control",
-				"constant",
-				"constant.numeric",
-				"constant.language",
-				"constant.other.property",
-				"constant.character.escape",
-				"comment keyword.codetag.notation",
-				"keyword.other.template.begin",
-				"keyword.other.template.end",
-				"markup.raw",
-				"markup.deleted",
-				"meta.property-list.css variable.other",
-				"entity.name.constant.preprocessor",
-				"meta.preprocessor",
-				"punctuation.section.embedded",
-				"punctuation.template-string.element.begin",
-				"punctuation.template-string.element.end",
-				"string.quoted.template punctuation.definition.string.begin",
-				"string.quoted.template punctuation.definition.string.end",
-				"meta.paragraph.markdown meta.dummy.line-break",
-				"meta.paragraph.markdown meta.hard-line-break.markdown",
-				"storage",
-				"storage.class.restructuredtext.ref",
-				"string.other.link.title",
-				"string.other.link.description",
-				"string.regexp punctuation.definition.string.begin",
-				"string.regexp punctuation.definition.string.end",
-				"variable.language.arguments",
-				"storage.modifier",
-				"keyword.operator.new",
-				"keyword.operator",
-				"keyword.operator.spread",
-				"punctuation.section.embedded.end.php source.php",
-				"support.function.construct",
-				"meta.at-rule.keyframes",
-				"meta.at-rule.keyframes entity.other.attribute-name"
-			],
-			"settings": {
-				"foreground": "#88BBFF"
-			}
-		},
-		{
-			"scope": [
-				"variable.other.substitution"
-			],
-			"settings": {
-				"foreground": "#88BBFF",
-				"fontStyle": "bold"
-			}
-		},
-		{
-			"scope": [
-				"meta.function-call meta.function-call.arguments",
-				"meta.function-call meta.arguments",
-				"meta.function-call meta.group",
-				"source.json meta.structure.dictionary",
-				"meta.object.member",
-				"punctuation.definition.group",
-				"string.unquoted.label",
-				"variable.other.member",
-				"entity.name.class",
-				"entity.name.namespace",
-				"constant.other",
-				"variable",
-				"variable.other",
-				"variable.other.constant.js",
-				"text.find-in-files",
-				"source",
-				"entity.name.type.module",
-				"source.sql support.function",
-				"support.other.namespace.php"
-			],
-			"settings": {
-				"foreground": "#FFFFFF",
-				"fontStyle": ""
-			}
-		},
-		{
-			"scope": [
-				"variable.parameter",
-				"parameters variable.function"
-			],
-			"settings": {
-				"foreground": "#FFFFFF",
-				"fontStyle": "italic"
-			}
-		},
-		{
-			"scope": [
-				"variable.other.property",
-				"support.variable.property",
-				"punctuation.separator.key-value",
-				"meta.object-literal.key",
-				"variable.other.object.property",
-				"variable.object.property",
-				"text.html.basic",
-				"text.html.vue-html",
-				"text.html.php",
-				"text.html.derivative",
-				"punctuation.definition.variable",
-				"punctuation.definition.keyword.scss",
-				"meta.jsx.children.js",
-				"meta.tag.attributes keyword.operator.assignment",
-				"support.type.vendored.property-name.css",
-				"support.type.property-name.json",
-				"variable.other.constant.property"
-			],
-			"settings": {
-				"foreground": "#BBBBCC"
-			}
-		},
-		{
-			"scope": "meta.property-name support.type",
-			"settings": {
-				"foreground": "#BBBBCC",
-				"fontStyle": ""
-			}
-		},
-		{
-			"scope": [
-				"keyword.other.substitution",
-				"keyword.operator.heading.restructuredtext",
-				"keyword.operator.table.row.restructuredtext",
-				"keyword.operator.table.data.restructuredtext",
-				"punctuation",
-				"markup.ignored",
-				"markup.untracked",
-				"meta.brace.round",
-				"meta.brace.square",
-				"meta.brace.curly",
-				"meta.delimiter.comma.js",
-				"meta.function-call.without-arguments.js",
-				"meta.function-call.method.without-arguments.js",
-				"source.scss",
-				"string source punctuation.section.embedded",
-				"punctuation.definition.tag.begin source",
-				"source.php"
-			],
-			"settings": {
-				"foreground": "#9999AA"
-			}
-		},
-		{
-			"scope": [
-				"comment",
-				"comment punctuation"
-			],
-			"settings": {
-				"foreground": "#888899",
-				"fontStyle": "italic"
-			}
-		},
-		{
-			"scope": "token.info-token",
-			"settings": {
-				"foreground": "#6796E6"
-			}
-		},
-		{
-			"scope": "token.warn-token",
-			"settings": {
-				"foreground": "#CD9731"
-			}
-		},
-		{
-			"scope": "token.error-token",
-			"settings": {
-				"foreground": "#F44747"
-			}
-		},
-		{
-			"scope": "token.debug-token",
-			"settings": {
-				"foreground": "#B267E6"
-			}
-		}
-	]
-}
@@ -1,41 +0,0 @@
-{
-  // Use IntelliSense to learn about possible attributes.
-  // Hover to view descriptions of existing attributes.
-  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
-  "version": "0.2.0",
-  "configurations": [
-    {
-      "name": "Spark Client",
-      "type": "coreclr",
-      "request": "launch",
-      "program": "${workspaceFolder}/build/Debug/bin/net6.0-windows/Spark.exe",
-      "cwd": "${workspaceFolder}/build/Debug/bin/net6.0-windows",
-      "enableStepFiltering": false,
-      "console": "internalConsole",
-      "stopAtEntry": false
-    },
-    {
-      "name": "Spark Test",
-      "type": "coreclr",
-      "request": "launch",
-      "program": "${workspaceFolder}/build/Debug/bin/net6.0/sparkcmd.exe",
-      "args": ["test", "${input:test}"],
-      "cwd": "${workspaceFolder}/build/Debug/bin/net6.0-windows",
-      "enableStepFiltering": false,
-      "console": "internalConsole",
-      "stopAtEntry": false
-    },
-    {
-      "name": "Attach (.NET Core)",
-      "type": "coreclr",
-      "request": "attach"
-    }
-  ],
-  "inputs": [
-    {
-      "id": "test",
-      "description": "The test(s) to run",
-      "type": "promptString"
-    }
-  ]
-}
@@ -1,37 +0,0 @@
-{
-  "cmake.configureOnOpen": false,
-  "workbench.colorTheme": "Default Dark+",
-  "C_Cpp.intelliSenseEngine": "Disabled",
-  "files.associations": {
-    "*.js": "javascript",
-    "*.conf": "jsonc",
-    "array": "cpp",
-    "xtree": "cpp",
-    "chrono": "cpp",
-    "*.ipp": "cpp",
-    "optional": "cpp",
-    "regex": "cpp",
-    "system_error": "cpp",
-    "format": "cpp",
-    "future": "cpp",
-    "istream": "cpp",
-    "memory": "cpp",
-    "tuple": "cpp",
-    "type_traits": "cpp",
-    "utility": "cpp",
-    "variant": "cpp",
-    "xlocmes": "cpp",
-    "xlocmon": "cpp",
-    "xlocnum": "cpp",
-    "xloctime": "cpp",
-    "xutility": "cpp",
-    "xstring": "cpp",
-    "string": "cpp",
-    "cstdint": "cpp"
-  },
-
-  "files.exclude": {
-    "**/.g.cs": true,
-    "**/.g.i.cs": true
-  }
-}
@@ -1,44 +0,0 @@
-{
-  "version": "2.0.0",
-  "tasks": [
-    {
-      "label": "Build Spark Client",
-      "type": "process",
-      "command": "C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\Common7\\Tools\\VsDevCmd.bat",
-      "args": [
-        "-arch=x64",
-        "-host_arch=x64",
-        "&&",
-        "${workspaceRoot}\\tools\\buildspark.cmd"
-      ],
-      "group": {
-        "kind": "build",
-        "isDefault": true
-      },
-      "presentation": {
-        "echo": true,
-        "reveal": "always",
-        "focus": false,
-        "panel": "new",
-        "showReuseMessage": false,
-        "clear": false,
-        "close": false
-      }
-    },
-
-    {
-      "label": "Run Spark Client",
-      "type": "process",
-      "command": "${workspaceRoot}\\build\\Debug\\bin\\net6.0-windows\\Spark.exe",
-      "presentation": {
-        "echo": true,
-        "reveal": "always",
-        "focus": false,
-        "panel": "shared",
-        "showReuseMessage": true,
-        "clear": false
-      },
-      "problemMatcher": []
-    }
-  ]
-}
@@ -0,0 +1 @@
+set(sources /home/taha/spark/doc/user/build.sh;content/_index.md;content/bts_spark/Glossary/_index.md;content/bts_spark/Help/_index.md;content/bts_spark/Help/about_spark.png;content/bts_spark/Help/image39.png;content/bts_spark/Help/image58.png;content/bts_spark/Launcher/_index.md;content/bts_spark/Launcher/image38.png;content/bts_spark/Launcher/image68.png;content/bts_spark/Logging-In-to-the-System/_index.md;content/bts_spark/Logging-In-to-the-System/image3.png;content/bts_spark/Logging-In-to-the-System/image64.png;content/bts_spark/Market/_index.md;content/bts_spark/Market/change_securities.png;content/bts_spark/Market/image11.png;content/bts_spark/Market/image14.png;content/bts_spark/Market/image20.png;content/bts_spark/Market/image21.png;content/bts_spark/Market/image23.png;content/bts_spark/Market/image24.png;content/bts_spark/Market/image34.png;content/bts_spark/Market/image49.png;content/bts_spark/Market/image53.png;content/bts_spark/Market/image66.png;content/bts_spark/Market/image69.png;content/bts_spark/Market/market_view.png;content/bts_spark/Market/settings_icon.png;content/bts_spark/Market/time_and_sales.png;content/bts_spark/My-Windows/_index.md;content/bts_spark/My-Windows/image15.png;content/bts_spark/My-Windows/image16.png;content/bts_spark/My-Windows/image37.png;content/bts_spark/Settings/_index.md;content/bts_spark/Settings/image51.png;content/bts_spark/Settings/image9.png;content/bts_spark/Spreader/_index.md;content/bts_spark/Spreader/image10.png;content/bts_spark/Spreader/image13.png;content/bts_spark/Spreader/image18.png;content/bts_spark/Spreader/image19.png;content/bts_spark/Spreader/image28.png;content/bts_spark/Spreader/image29.png;content/bts_spark/Spreader/image31.png;content/bts_spark/Spreader/image35.png;content/bts_spark/Spreader/image40.png;content/bts_spark/Spreader/image43.png;content/bts_spark/Spreader/image54.png;content/bts_spark/Spreader/image55.png;content/bts_spark/Spreader/image56.png;content/bts_spark/Spreader/image6.png;content/bts_spark/Spreader/image7.png;content/bts_spark/Spreader/image70.png;content/bts_spark/Spreader/image72.png;content/bts_spark/Spreader/image8.png;content/bts_spark/Trading/OrderTypes/index.md;content/bts_spark/Trading/_index.md;content/bts_spark/Trading/algo_studio.png;content/bts_spark/Trading/collapse_all_icon.png;content/bts_spark/Trading/cover_algo_control.png;content/bts_spark/Trading/expand_all_icon.png;content/bts_spark/Trading/image1.png;content/bts_spark/Trading/image17.png;content/bts_spark/Trading/image2.png;content/bts_spark/Trading/image25.png;content/bts_spark/Trading/image27.png;content/bts_spark/Trading/image33.png;content/bts_spark/Trading/image42.png;content/bts_spark/Trading/image44.png;content/bts_spark/Trading/image47.png;content/bts_spark/Trading/image48.png;content/bts_spark/Trading/image5.png;content/bts_spark/Trading/image50.png;content/bts_spark/Trading/image52.png;content/bts_spark/Trading/image57.png;content/bts_spark/Trading/image59.png;content/bts_spark/Trading/image60.png;content/bts_spark/Trading/image61.png;content/bts_spark/Trading/image62.png;content/bts_spark/Trading/image73.png;content/bts_spark/Trading/image74.png;content/bts_spark/Trading/join_algo_control.png;content/bts_spark/Trading/ladder.png;content/bts_spark/Trading/ladder_badges.png;content/bts_spark/Trading/ladder_main_part.png;content/bts_spark/Trading/lean_algo_control.png;content/bts_spark/Trading/mini_orderbook.png;content/bts_spark/Trading/oco_algo_control.png;content/bts_spark/Trading/offset_algo_control.png;content/bts_spark/Trading/pnl_calculation.png;content/bts_spark/Trading/pnl_window.png;content/bts_spark/Trading/recreate_icon.png;content/bts_spark/Trading/settings_icon.png;content/bts_spark/Trading/spark_menu_order_book.png;content/bts_spark/Trading/top_algo_control.png;content/bts_spark/Trading/trigger_algo_control.png;content/bts_spark/_index.md;content/release_notes/_index.md;content/system_requirements/_index.md;static/book.js;static/favicon.ico;static/image.js;templates/index.html;templates/page.html;templates/section.html;templates/shortcodes/back_button.html)
@@ -1,8 +1,8 @@
 cmake_minimum_required(VERSION 3.5)
 project(doc)

-include(${CMAKE_SOURCE_DIR}/cmake/safe_dep_glob.cmake)
-include(${CMAKE_SOURCE_DIR}/cmake/Protobuf.cmake)
+include(${CMAKE_SOURCE_DIR}/tools/safe_dep_glob.cmake)
+include(${CMAKE_SOURCE_DIR}/tools/Protobuf.cmake)

 # DEPENDENCIES
 set(DOC_GLOBS
@@ -1,141 +0,0 @@
-FROM ubuntu:latest
-
-ARG DEBIAN_FRONTEND=noninteractive
-ENV TZ=America/New_York
-
-# light deps (should be quick to download/install)
-RUN apt-get update && apt-get install -y \
-    ca-certificates \
-    curl \
-    gnupg \
-    liblttng-ust-dev \
-    libpcap0.8-dev \
-    locales \
-    ninja-build \
-    software-properties-common \
-    sqlite3 \
-    tzdata
-
-# clang
-RUN apt-get update && apt-get install -y \
-    clang-13 \
-    clang-format-13 \
-    clangd-13 \
-    clang-15 \
-    clang-format-15 \
-    clangd-15
-
-# g++
-RUN apt-get update && apt-get install -y \
-    g++-11 \
-    g++-12
-
-# python
-RUN apt-get update && apt-get install -y \
-    python3-pip \
-    python3-venv \
-    && python3 -m pip install --upgrade pip
-
-# dotnet
-RUN apt-get update && apt-get install -y \
-    dotnet7
-
-# ssh
-RUN apt-get update && apt-get install -y \
-    libssh2-1-dev \
-    openssh-server
-
-# cmake
-RUN \
-    curl -fsSL https://apt.kitware.com/keys/kitware-archive-latest.asc 2> /dev/null \
-    | gpg --dearmor - \
-    | tee /usr/share/keyrings/kitware-archive-keyring.gpg > /dev/null \
-    && echo "deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ $(lsb_release -cs) main" \
-    | tee /etc/apt/sources.list.d/kitware.list > /dev/null \
-    && apt-get update \
-    && rm /usr/share/keyrings/kitware-archive-keyring.gpg \
-    && apt-get install -y kitware-archive-keyring \
-    && echo "deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ $(lsb_release -cs)-rc main" \
-    | tee -a /etc/apt/sources.list.d/kitware.list >/dev/null \
-    && apt-get install -y cmake
-
-# node
-ARG node_major=18
-RUN mkdir -p /etc/apt/keyrings \
-    && curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key \
-    | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg \
-    && echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$node_major.x nodistro main" \
-    | tee /etc/apt/sources.list.d/nodesource.list \
-    && apt-get update \
-    && apt-get install -y nodejs
-
-# ccache is done here so that ccache sees clang++ installed, not clang-10
-RUN apt-get update && apt-get install -y \
-    ccache 
-
-# emumba (light deps)
-RUN apt-get update && apt-get install -y \
-    build-essential \
-    doxygen \
-    python3-sphinx \
-    graphviz \
-    libgtest-dev \
-    libssl-dev \
-    rapidjson-dev \
-    zlib1g-dev \
-    pkg-config
-
-# emumba (boost)
-RUN apt-get update && apt-get install -y \
-    libboost-filesystem-dev \
-    libboost-program-options-dev \
-    libboost-test-dev \
-    libboost-date-time-dev
-
-# dev utils
-RUN apt-get update && apt-get install -y \ 
-    fish \
-    git-all \
-    sudo \
-    vim \
-    wget
-
-# set up default executables (update-alternatives)
-RUN \
-    update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-13 100; \
-    update-alternatives --install /usr/bin/clang clang /usr/bin/clang-13 100; \
-    update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-13 100; \
-    update-alternatives --install /usr/bin/clangd clangd /usr/bin/clangd-13 100; \
-    update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-11 100; \
-    update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 100
-
-# Add compiler symlinks for ccache 
-RUN \
-    ln -s /usr/bin/ccache /usr/local/bin/clang; \
-    ln -s /usr/bin/ccache /usr/local/bin/clang++; \
-    ln -s /usr/bin/ccache /usr/local/bin/clang-13; \
-    ln -s /usr/bin/ccache /usr/local/bin/clang++-13; \
-    ln -s /usr/bin/ccache /usr/local/bin/clang-15; \
-    ln -s /usr/bin/ccache /usr/local/bin/clang++-15; \
-    ln -s /usr/bin/ccache /usr/local/bin/gcc; \
-    ln -s /usr/bin/ccache /usr/local/bin/g++; \
-    ln -s /usr/bin/ccache /usr/local/bin/gcc-11; \
-    ln -s /usr/bin/ccache /usr/local/bin/g++-11; \
-    ln -s /usr/bin/ccache /usr/local/bin/gcc-12; \
-    ln -s /usr/bin/ccache /usr/local/bin/g++-12
-
-RUN locale-gen en_US.UTF-8
-
-ARG docker_user="bts"
-ARG docker_uid="1000"
-ARG docker_pass="bts"
-
-RUN \
-    groupadd -g "$docker_uid" "$docker_user" \
-    && useradd \
-    -m \
-    -u "$docker_uid" \
-    -g "$docker_uid" \
-    -G sudo \
-    --password "$(openssl passwd -1 "$docker_pass")" \
-    "$docker_user"
@@ -1,64 +0,0 @@
-[dev containers]: https://code.visualstudio.com/docs/devcontainers/containers
-[dev containers ext]: https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers
-[docker repo sparkd-dev]: https://hub.docker.com/repository/docker/bluetradingsystems/sparkd-dev/general
-# Sparkd Dev Container
-## How to create a VS Code [Dev Container][dev containers]
-
-1. Make sure the **[Dev Containers][dev containers ext]** extension is installed
-1. Make sure your Docker image is up to date
-   ```
-   docker pull bluetradingsystems/sparkd-dev:latest
-   ```
-1. Copy **devcontainer.json** from this folder to **$workspaceFolder/.devcontainer/**.
-
-1. In the VS Code Command Palette, run **Dev Containers: Reopen in Container**
-
---
-## How to create a Sparkd Container in the terminal (without VS Code)
-
-1. Make sure your Docker image is up to date
-   ```
-   docker pull bluetradingsystems/sparkd-dev:latest
-   ```
-2. Start the container
-   ```
-   # Replace <cont_name> with a name for the container. The container's
-   # "$HOME" dir will be mounted to "$HOME/.sparkd-dev/mounts/<cont_name> on
-   # the host
-   
-   ./start_docker.sh --container <cont_name> --mount-existing
-   ```
-   * *Replace <cont_name> with a name for the container*
-   * *The container's `$HOME` dir will be mounted to
-   `$HOME/.sparkd-dev/mounts<cont_name>` on the host*<br>
-   * *Run: `./start_docker.sh --help` to see additional options*
-3. *(Optional) Attach VS Code to the running container.*<br>
-Run **Dev Containers: Attach to Running Container** from the command palette,
-then select your container in the dropdown
-
---
-## How to update the Docker image
-
-1. Change the image by modifying the Dockerfile (don't tag arbitrary
-  images on your machine and push them to our repo on Docker Hub)
-
-1. After modifying the Dockerfile, (re)build the image
-   ```
-   # Run in this dir
-   docker build -t bluetradingsystems/sparkd-dev:latest .
-   ```
-   ***Note:** Your docker login must have write permissions to push to the
-   [sparkd-dev][docker repo sparkd-dev] repository*
-
-2. Commit the changes to Dockerfile in git
-
-3. Push the new image to Docker Hub
-
-   ```
-   docker push bluetradingsystems/sparkd-dev:latest
-   ```
-   ***Note:** The image doesn't have to be on Docker Hub, we can simply build
-   it from scratch on our local machines (with the Dockerfile). However, this
-   takes time. It is significantly quicker to download a prebuilt image, so we
-   store it on a remote repository to save time when setting up a new dev
-   machine.*
@@ -1,123 +0,0 @@
-# ~/.bashrc: executed by bash(1) for non-login shells.
-# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
-# for examples
-
-# If not running interactively, don't do anything
-case $- in
-    *i*) ;;
-      *) return;;
-esac
-
-# don't put duplicate lines or lines starting with space in the history.
-# See bash(1) for more options
-HISTCONTROL=ignoreboth
-
-# append to the history file, don't overwrite it
-shopt -s histappend
-
-# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
-HISTSIZE=1000
-HISTFILESIZE=2000
-
-# check the window size after each command and, if necessary,
-# update the values of LINES and COLUMNS.
-shopt -s checkwinsize
-
-# If set, the pattern "**" used in a pathname expansion context will
-# match all files and zero or more directories and subdirectories.
-#shopt -s globstar
-
-# make less more friendly for non-text input files, see lesspipe(1)
-[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"
-
-# set variable identifying the chroot you work in (used in the prompt below)
-if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
-    debian_chroot=$(cat /etc/debian_chroot)
-fi
-
-# set a fancy prompt (non-color, unless we know we "want" color)
-case "$TERM" in
-    xterm-color|*-256color) color_prompt=yes;;
-esac
-
-# uncomment for a colored prompt, if the terminal has the capability; turned
-# off by default to not distract the user: the focus in a terminal window
-# should be on the output of commands, not on the prompt
-#force_color_prompt=yes
-
-if [ -n "$force_color_prompt" ]; then
-    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
-	# We have color support; assume it's compliant with Ecma-48
-	# (ISO/IEC-6429). (Lack of such support is extremely rare, and such
-	# a case would tend to support setf rather than setaf.)
-	color_prompt=yes
-    else
-	color_prompt=
-    fi
-fi
-
-if [ "$color_prompt" = yes ]; then
-    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
-else
-    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
-fi
-unset color_prompt force_color_prompt
-
-# If this is an xterm set the title to user@host:dir
-case "$TERM" in
-xterm*|rxvt*)
-    PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"
-    ;;
-*)
-    ;;
-esac
-
-# enable color support of ls and also add handy aliases
-if [ -x /usr/bin/dircolors ]; then
-    test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
-    alias ls='ls --color=auto'
-    #alias dir='dir --color=auto'
-    #alias vdir='vdir --color=auto'
-
-    alias grep='grep --color=auto'
-    alias fgrep='fgrep --color=auto'
-    alias egrep='egrep --color=auto'
-fi
-
-# colored GCC warnings and errors
-#export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'
-
-# some more ls aliases
-alias ll='ls -alF'
-alias la='ls -A'
-alias l='ls -CF'
-
-# Add an "alert" alias for long running commands.  Use like so:
-#   sleep 10; alert
-alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'
-
-# Alias definitions.
-# You may want to put all your additions into a separate file like
-# ~/.bash_aliases, instead of adding them here directly.
-# See /usr/share/doc/bash-doc/examples in the bash-doc package.
-
-if [ -f ~/.bash_aliases ]; then
-    . ~/.bash_aliases
-fi
-
-# enable programmable completion features (you don't need to enable
-# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
-# sources /etc/bash.bashrc).
-if ! shopt -oq posix; then
-  if [ -f /usr/share/bash-completion/bash_completion ]; then
-    . /usr/share/bash-completion/bash_completion
-  elif [ -f /etc/bash_completion ]; then
-    . /etc/bash_completion
-  fi
-fi
-
-if [[ ! -v XDG_CONFIG_HOME ]]; then
-  export XDG_CONFIG_HOME="$HOME/.config"
-fi
-
-export PATH="$HOME/.local/bin:$PATH"
@@ -1,25 +0,0 @@
-if ! set -q XDG_CONFIG_HOME
-    set -g XDG_CONFIG_HOME "$HOME/.config"
-end
-set fish_config_home $XDG_CONFIG_HOME/fish
-if test -f "$fish_config_home/aliases.fish"
-    source "$fish_config_home/aliases.fish"
-end
-# enable general colors and case insensitive search in 'less'
-set -x LESS "$LESS -R -Q -I"
-set -x LC_ALL en_US.UTF-8
-# enable syntax highlighting in 'less'
-# set highlight color scheme in 'less' (fg)(bg)
-set -g LESS_TERMCAP_md (tput bold)(tput setaf 36)
-set -g LESS_TERMCAP_me (tput sgr0)
-set -g LESS_TERMCAP_so (tput setaf 232)(tput setab 49)
-
-set -q TERM
-if test $status != 0; or test $TERM = 'xterm'
-    set -g TERM 'xterm-256color'
-end
-
-# Fix impossible-to-see navy blue command text color
-set fish_color_command F8F8F2
-
-set -g PATH "$HOME/.local/bin" "$PATH"
@@ -1,33 +0,0 @@
-{
-  "image": "bluetradingsystems/sparkd-dev:latest",
-  // Creates local dir to mount to HOME in docker 
-  "initializeCommand": "mkdir -p ${localEnv:HOME}/.bts/devcontainer-mounts/${devcontainerId}",
-  "hostRequirements": {
-    "memory": "4gb",
-    "storage": "6gb"
-  },
-  "postCreateCommand": "/home/bts/spark/docker/sparkd/dev/devcontainer_post_create.sh",
-  "containerUser": "bts",
-  "workspaceMount": "source=${localWorkspaceFolder},target=/home/bts/spark,type=bind",
-  "workspaceFolder": "/home/bts/spark",
-  "updateRemoteUserUID": true,
-  "shutdownAction": "none",
-  // Note: If running multiple containers on the same host, each must use a
-  // unique set of ports. Usually we just add 1000 to each port as needed. For
-  // example, if 8000-8003 is taken, go with 9000-9003, then 10000-10003, etc.
-  "runArgs": [
-    "--shm-size",
-    "2gb",
-    "-p",
-    "8000:8000",
-    "-p",
-    "8001:8001",
-    "-p",
-    "8002:8002",
-    "-p",
-    "8003:8003"
-  ],
-  "mounts": [
-    "source=${localEnv:HOME}/.bts/devcontainer-mounts/${devcontainerId},target=/home/bts,type=bind"
-  ]
-}
@@ -1,33 +0,0 @@
-#!/usr/bin/env bash
-
-this_dir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
-repo_dir="$(cd "$this_dir" && git rev-parse --show-toplevel)"
-tools_dir="$repo_dir/tools"
-gen_tag="GENERATED BY $(basename "${BASH_SOURCE[0]}")"
-
-function copy_if_not_exist() {
-  src="$1"
-  dest="$2"
-  if [[ ! -e "$src" ]]; then
-    echo "Unable to copy $src to $dest. Source file doesn't exist"
-    exit 1
-  fi
-  if [[ ! -e "$dest" ]]; then
-    cp "$src" "$dest"
-  fi
-}
-
-# Init bashrc
-echo "Initializing bashrc"
-copy_if_not_exist "$this_dir/bashrc" "$HOME/.bashrc"
-
-# Init fish config
-echo "Initializing fish config"
-fish_cfg_dir="$HOME/.config/fish/"
-mkdir -p "$fish_cfg_dir"
-exec "$tools_dir/write_tag_block.sh" \
-  --tag "$gen_tag" \
-  --replace \
-  --in-place \
-  --file "$fish_cfg_dir/config.fish" \
-  --text "$(cat "$this_dir/config.fish")"
@@ -1,250 +0,0 @@
-#!/usr/bin/env bash
-
-function _exit() {
-  if [[ "$#" -gt 1 ]]; then
-    # When there are multiple args, the last arg is the exit code.
-    echo "${@:1:($# - 1)}"
-    exit "${@: -1}"
-  fi
-  echo "$1"
-  exit 0
-}
-
-help_text="\
-Add or update a user's uid
-
-This script is intended to be run in a Docker container as a means to obtain
-file permissions in mounted directories owned by the specified UID.
-
-Usage: set_user.sh [OPTIONS] USER UID
-
-Positionals:
-  USER               The name of the user
-
-Options:
-  --user USER        The name of the user (defaults to 'bts')
-  --uid UID          The new uid to give USER (defaults to '1000')
-  --group GROUP      The primary group to give USER (defaults to USER)
-  --gid GID          The primary gid to give USER (defaults to UID)
-  --pass PASSWORD    The password to give USER (defaults to USER, only applies
-                     if USER hasn't been created yet) 
-  --modify-existing  Update UID/GID even if USER already exists
-  -h,--help          Print this help message and exit
-
-"
-
-function _add_group() {
-  if [[ "$#" -ne 2 ]]; then
-    _exit "'_add_group' requires exactly 2 args (group, gid). Received $#." 1
-  fi
-  local group="$1"
-  local gid="$2"
-  # Check if gid already exists
-  local existing_group=""
-  existing_group="$(getent group "$gid" | cut -d : -f 1)"
-  if [[ -n "$existing_group" ]]; then
-    if [[ "$existing_group" != "$group" ]]; then
-      echo "\
-The gid '$gid' is already in use by group '$existing_group' (will not rename \
-the group)"
-    fi
-    return
-  fi
-
-  # Check if group with same name already exists
-  local existing_gid=""
-  existing_gid="$(getent group "$group" | cut -d : -f 3)"
-  if [[ -n "$existing_gid" ]]; then
-    # The group already exists. Only modify if --modify-existing was specified.
-    if [[ "$modify_existing" -eq 0 ]]; then
-      _exit "\
-The group '$group' already exists with gid '$existing_gid'.
-Specify --modify-existing to change the gid anyways." 1
-    fi
-    echo "Changing gid for group '$group' from '$existing_gid' to '$gid'"
-    groupmod -g "$gid" "$group"
-  else
-    # The group doesn't exist. Add it
-    echo "Adding group '$group:$gid'"
-    groupadd -g "$gid" "$group"
-  fi
-}
-
-function _add_user() {
-  local user="$1"
-  local uid="$2"
-  local group="$3"
-  local gid="$4"
-  local pass="$5"
-  if [[ "$#" -ne 5 ]]; then
-    _exit "'_add_user' requires exactly 5 args (user, uid, group, gid, pass). \
-Received $#." 1
-  fi
-
-  # Check if uid is being used by another user
-  local existing_user=""
-  existing_user="$(getent passwd "$uid" | cut -d : -f 1)"
-  if [[ -n "$existing_user" ]]; then
-    if [[ "$existing_user" != "$user" ]]; then
-      _exit "The uid '$uid' is already in use by user '$existing_user'." 1
-    fi
-
-    echo "The user '$user' already has the specified uid '$uid'."
-    # Modify gid if necessary
-    local existing_gid=""
-    existing_gid="$(id -g "$user" 2> /dev/null)"
-    if [[ "$existing_gid" = "$gid" ]]; then
-      echo "The user '$user' already has the specified gid '$gid'."
-      return
-    fi
-
-    if [[ "$modify_existing" -eq 0 ]]; then
-      _exit "\
-The user '$user' is associated with the primary group '$existing_gid'.
-Specify --modify-existing to change the gid anyways." 1
-    fi
-
-    echo "Changing primary group for '$user' from '$existing_gid' to '$gid'."
-    usermod -g "$gid" "$user"
-    return
-  fi
-
-  # Check if user with same name already exists
-  local existing_uid=""
-  existing_uid="$(id -u "$user" 2> /dev/null)"
-  if [[ -n "$existing_uid" ]]; then
-    if [[ "$existing_uid" = "$uid" ]]; then
-      _exit "The user '$user' already has the specified uid '$uid'" 0
-    fi
-
-    if [[ "$modify_existing" -eq 0 ]]; then
-      _exit "\
-User '$user' already exists with uid '$existing_uid'.
-Specify --modify-existing to change the uid anyways." 1
-    fi
-
-    echo "Changing uid for user '$user' from '$existing_uid' to '$uid'"
-    if ! usermod -u "$uid" -g "$gid" "$user"; then
-      _exit "usermod exited with code $?" 1
-    fi
-    return
-  fi
-
-  # The user doesn't exist. Add it
-  echo "Adding user '$user:$uid' (group='$group:$gid', password='$pass')"
-  useradd -m -u "$uid" -g "$gid" -G sudo --password "$(openssl passwd -1 "$pass")" "$user"
-}
-
-function _update_fish_dir_perms() {
-  local user="$1"
-  local uid="$2"
-  local gid="$3"
-  # When a fish shell session starts, a temp dir named '/tmp/fish.<user>' is
-  # created with the user's current uid/gid. If such a dir exists for the
-  # specified USER, make sure the uid/gid match the new values.
-  fish_dir="/tmp/fish.$user"
-  if [[ -d "$fish_dir" ]]; then
-    perms="$uid:$gid"
-    existing_perms="$(stat -c %u:%g "$fish_dir")"
-    if [[ "$existing_perms" != "$perms" ]]; then
-      echo "Changing uid:gid for dir '$fish_dir' from '$existing_perms' to '$perms'"
-      chown -R "$perms" "$fish_dir"
-    fi
-  fi
-}
-
-user=""
-group=""
-pass=""
-declare -i uid=0
-declare -i gid=0
-declare -i modify_existing=0
-
-while [[ $# -gt 0 ]]; do
-  case "$1" in
-    --user)
-      if [[ -z "$2" ]]; then
-        _exit "USER (--user) must be non-empty" 1
-      elif [[ "$2" = "root" ]]; then
-        _exit "USER (--user) cannot be 'root'" 1
-      fi
-      user="$2"
-      shift 2
-      ;;
-    --group)
-      if [[ -z "$2" ]]; then
-        _exit "GROUP (--group) must be non-empty" 1
-      elif [[ "$2" = "root" ]]; then
-        _exit "GROUP (--group) cannot be 'root'" 1
-      fi
-      group="$2"
-      shift 2
-      ;;
-    --uid)
-      if [[ -z "$2" ]]; then
-        _exit "UID (--uid) must be non-empty" 1
-      fi
-      uid="$2"
-      shift 2
-      ;;
-    --gid)
-      if [[ -z "$2" ]]; then
-        _exit "GID (--gid) must be non-empty" 1
-      fi
-      gid="$2"
-      shift 2
-      ;;
-    --pass)
-      if [[ -z "$2" ]]; then
-        _exit "PASS (--pass) must be non-empty" 1
-      fi
-      pass="$2"
-      shift 2
-      ;;
-    --modify-existing)
-      modify_existing=1
-      shift 1
-      ;;
-    -h)
-      ;&
-    --help)
-      _exit "$help_text" 0
-      ;;
-    *)
-      if [[ -z "$1" ]]; then
-        _exit "Invalid positional argument '$1'" 1
-      elif [[ -z "$user" ]]; then
-        user="$1"
-      elif [[ -z "$uid" ]]; then
-        uid="$1"
-      else
-        _exit "Unexpected argument '$1'" 1
-      fi
-      shift 1
-      ;;
-  esac
-done
-
-if [[ -z "$user" ]]; then
-  user="bts"
-fi
-
-if [[ $uid -eq 0 ]]; then
-  uid=1000
-fi
-
-# In general, a user's primary group/gid matches the user's name/uid.
-# If group/gid args weren't specified, set them to name/uid.
-if [[ -z "$group" ]]; then
-  group="$user"
-fi
-if [[ $gid -eq 0 ]]; then
-  gid=$uid
-fi
-if [[ -z "$pass" ]]; then
-  pass="$user"
-fi
-
-_add_group "$group" "$gid"
-_add_user "$user" "$uid" "$group" "$gid" "$pass"
-_update_fish_dir_perms "$user" "$uid" "$gid"
@@ -1,230 +0,0 @@
-#!/usr/bin/env bash
-
-function _exit() {
-  if [[ "$#" -gt 1 ]]; then
-    # When there are multiple args, the last arg is the exit code.
-    echo "${@:1:($# - 1)}"
-    exit "${@: -1}"
-  fi
-  echo "$1"
-  exit 0
-}
-
-help_text="\
-Start a docker dev container
-Usage: start_docker.sh [OPTIONS] image container
-
-Positionals:
-  image             The image to instantiate
-  container         The name for the container
-
-Options:
-  -u,--user USER      The user to add in the container (defaults to 'bts')
-  -p,--pass PASS      The password for USER in the container (defaults to USER)
-  -i,--image IMAGE    The image to instantiate (defaults to 'bluetradingsystems/sparkd-dev:latest')
-  -c,--container CONT The name for the container
-  -m,--mount MOUNT    The name for the folder (outside the container) to create/mount to the home
-                      directory in the container. Mount folders are added here: $mount_prefix
-  --mount-existing    Mount the specified dir even if it already exists
-  --port <cont_port>:<host_port> OR [<cont_port>:<host_port>,...] Port mapping(s). May be
-                      specified multiple times.
-  -h,--help           Print this help message and exit
-
-"
-
-mount_prefix="$HOME/.sparkd-dev/mounts"
-declare docker_user=""
-declare docker_pass=""
-declare image_name=""
-declare cont_name=""
-declare mount_name=""
-declare -i mount_existing=0
-declare -a port_mappings=()
-
-while [[ $# -gt 0 ]]; do
-  case "$1" in
-    -u)
-      ;&
-    --user)
-      if [[ -z "$2" ]]; then
-        _exit "User (-u,--user) must be non-empty" 1
-      fi
-      docker_user="$2"
-      shift 2
-      ;;
-    -p)
-      ;&
-    --pass)
-      if [[ -z "$2" ]]; then
-        _exit "Password (-p,--pass) must be non-empty" 1
-      fi
-      docker_pass="$2"
-      shift 2
-      ;;
-    -i)
-      ;&
-    --image)
-      if [[ -n "$image_name" ]]; then
-        _exit "Unexpected argument '$1'" 1
-      elif [[ -z "$2" ]]; then
-        _exit "Image (-i,--image) must be non-empty" 1
-      fi
-      image_name="$2"
-      shift 2
-      ;;
-    -c)
-      ;&
-    --container)
-      if [[ -n "$cont_name" ]]; then
-        _exit "Unexpected argument '$1'" 1
-      elif [[ -z "$2" ]]; then
-        _exit "Container (-c,--container) must be non-empty" 1
-      fi
-      cont_name="$2"
-      shift 2
-      ;;
-    --port)
-      # Parse port(s) arg, and append the result to 'port_mappings'
-      # Note: port(s) may be specified in bracketed notation:
-      #   [a:b,c:d,...,y:z]
-      next_ports="$(echo "$2" | sed -e 's/\[//g' -e 's/\]//g' -e 's/,/ /g')"
-      if [[ "${#port_mappings[@]}" -gt 0 ]]; then
-        next_ports=" $next_ports"
-      fi
-      port_mappings+=("$next_ports")
-      shift 2
-      ;;
-    -m)
-      ;&
-    --mount)
-      if [[ -z "$2" ]]; then
-        echo "Mount (-m,--mount) must be non-empty"
-      fi
-      mount_name="$2"
-      shift 2
-      ;;
-    --mount-existing)
-      mount_existing=1
-      shift 1
-      ;;
-    -h)
-      ;&
-    --help)
-      _exit "$help_text" 0
-      ;;
-    *)
-      if [[ -z "$1" ]]; then
-        _exit "Invalid positional argument '$1'" "$help_text" 1
-      elif [[ -z "$image_name" ]]; then
-        image_name="$1"
-      elif [[ -z "$cont_name" ]]; then
-        cont_name="$1"
-      else
-        _exit "Unexpected argument '$1'" "$help_text" 1
-      fi
-      shift 1
-      ;;
-  esac
-done
-
-
-if [[ -z "$image_name" ]]; then
-  image_name="bluetradingsystems/sparkd-dev:latest"
-fi
-
-host_name="$(hostname)"
-if [[ -n "$cont_name" ]]; then
-  host_name="$host_name.$cont_name"
-fi
-
-if [[ -z "$mount_name" ]]; then
-  mount_name="$cont_name"
-fi
-
-if [[ -z "$mount_name" && -z "$cont_name" ]]; then
-  _exit "Please specify mount (-m,--mount) and/or container (-c,--container)" 1
-fi
-
-if [[ -z "$docker_user" ]]; then
-  docker_user="bts"
-fi
-
-if [[ "$docker_user" = "root" ]]; then
-  _exit "USER (--user) cannot be 'root'" 1
-fi
-
-cont_home="/home/$docker_user"
-home_src="$mount_prefix/$mount_name"
-home_tgt="$cont_home"
-this_dir="$(dirname "$(realpath "${BASH_SOURCE[0]}")")"
-repo_src="$(cd "$this_dir" && git rev-parse --show-toplevel)"
-repo_tgt="$cont_home/spark"
-working_dir="$cont_home"
-
-if [[ $mount_existing -eq 0 && -e "$home_src" ]]; then
-  # Don't overwrite existing dir (might be mounted in another container)
-  _exit "Mount dir '$home_src' already exists (use --mount-existing to mount \
-an existing directory)" 1
-fi
-
-mkdir -p "$home_src"
-
-if [[ "${#port_mappings[@]}" -eq 0 ]]; then
-  port_mappings=("8000:8000" "8001:8001" "8002:8002" "8003:8003")
-fi
-
-# Adapt port_mappings into args for `docker run` by prepending "-p " to each
-# item
-declare -a docker_port_args=()
-for port_mapping in "${port_mappings[@]}"; do
-  docker_port_args+=("-p $port_mapping")
-done
-
-echo "Starting container '$cont_name'
-image_name  : $image_name
-cont_name   : $cont_name
-home_src    : $home_src
-home_tgt    : $home_tgt
-repo_src    : $repo_src
-repo_tgt    : $repo_tgt
-working dir : $working_dir
-ports       : ${port_mappings[*]}
-"
-
-# DON'T wrap $docker_port_args in quotes. We want bash to split args by
-# whitespace
-docker run \
-  --net bridge \
-  -h "$host_name" \
-  -e "TZ=America/New_York" \
-  --cap-add=SYS_PTRACE \
-  --security-opt seccomp=unconfined \
-  --name "$cont_name" \
-  -v "$home_src:$home_tgt" \
-  -v "$repo_src:$repo_tgt" \
-  -w "$working_dir" \
-  ${docker_port_args[*]} \
-  --shm-size=4024m \
-  -t \
-  -i \
-  -d \
-  -e DISPLAY="$DISPLAY" \
-  "$image_name"
-
-# Add user w/ same uid and gid as the current user outside of docker, so the
-# user inside the docker has file permissions in the mounted dir.
-docker_group="$docker_user"
-docker_uid="$(id -u "$USER")"
-docker_gid="$(id -g "$USER")"
-if [[ -z "$docker_pass" ]]; then
-  docker_pass="$docker_user"
-fi
-docker exec -u root -it "$cont_name" "$repo_tgt/docker/sparkd/dev/set_user.sh" \
--user "$docker_user" \
--uid "$docker_uid" \
--group "$docker_group" \
--gid "$docker_gid" \
--pass "$docker_pass"
-
-# Run same script VS Code runs to initialize the container
-docker exec -u "$docker_user" -it "$cont_name" "$repo_tgt/docker/sparkd/dev/devcontainer_post_create.sh"
@@ -1,64 +0,0 @@
-#!/usr/bin/env bash
-
-function print_help_and_exit() {
-  cat <<EOF
-Open a shell inside the docker container
-Usage: docker_shell.sh [OPTIONS] [CONTAINER]
-
-Options:
-  -u,--user         The user to login with in the container (defaults to the current user)
-  -c,--container    The container name (may also be specified as positional arg)
-  -h,--help         Print this help message and exit
-
-EOF
-  exit "$1"
-}
-
-
-declare docker_user=""
-declare cont_name=""
-
-while [[ $# -gt 0 ]]; do
-  case "$1" in
-    -u)
-      ;&
-    --user)
-      if [[ -z "$2" ]]; then
-        echo "User (-u,--user) must be non-empty"
-        print_help_and_exit 1
-      fi
-      docker_user="$2"
-      shift 2
-      ;;
-    -h)
-      ;&
-    --help)
-      print_help_and_exit 0
-      ;;
-    -c)
-      ;&
-    --container)
-      shift 1
-      ;&
-    *)
-      if [[ ! -z "$cont_name" ]]; then
-        echo "Unexpected argument '$1'"
-        print_help_and_exit 1
-      fi
-      cont_name="$1"
-      shift 1
-      ;;
-  esac
-done
-
-
-if [[ -z "$cont_name" ]]; then
-  echo "Please specify the container ([-c,--container])"
-  print_help_and_exit 1
-fi
-
-if [[ -z "$docker_user" ]]; then
-  docker_user="$USER"
-fi
-
-docker exec -u "$docker_user" -it "$cont_name" bash
@@ -1,233 +0,0 @@
-#!/usr/bin/env bash
-
-mount_prefix="$HOME/.spark-dev/mounts"
-
-function print_help_and_exit() {
-  cat <<EOF
-Start a docker dev container
-Usage: start_docker.sh [OPTIONS] image container
-
-Positionals:
-  image             The image to instantiate
-  container         The name for the container
-
-Options:
-  -u,--user USER      The user to add in the container (defaults to the current user)
-  -p,--pass PASS      The password for USER in the container (defaults to USER)
-  -i,--image IMAGE    The image to instantiate
-  -c,--container CONT The name for the container
-  -m,--mount MOUNT    The name for the folder (outside the container) to create/mount to the home
-                      directory in the container. Mount folders are added here: $mount_prefix
-  --mount-existing    Mount the specified dir even if it already exists
-  --port <cont_port>:<host_port> OR [<cont_port>:<host_port>,...] Port mapping(s). May be
-                      specified multiple times.
-  -h,--help           Print this help message and exit
-
-EOF
-  exit "$1"
-}
-
-
-declare docker_user=""
-declare docker_pass=""
-declare image_name=""
-declare cont_name=""
-declare mount_name=""
-declare -i mount_existing=0
-declare -a port_mappings=()
-
-while [[ $# -gt 0 ]]; do
-  case "$1" in
-    -u)
-      ;&
-    --user)
-      if [[ -z "$2" ]]; then
-        echo "User (-u,--user) must be non-empty"
-        print_help_and_exit 1
-      fi
-      docker_user="$2"
-      shift 2
-      ;;
-    -p)
-      ;&
-    --pass)
-      if [[ -z "$2" ]]; then
-        echo "Password (-p,--pass) must be non-empty"
-        print_help_and_exit 1
-      fi
-      docker_pass="$2"
-      shift 2
-      ;;
-    -i)
-      ;&
-    --image)
-      if [[ -n "$image_name" ]]; then
-        echo "Unexpected argument '$1'"
-        print_help_and_exit 1
-      elif [[ -z "$2" ]]; then
-        echo "Image (-i,--image) must be non-empty"
-        print_help_and_exit 1
-      fi
-      image_name="$2"
-      shift 2
-      ;;
-    -c)
-      ;&
-    --container)
-      if [[ -n "$cont_name" ]]; then
-        echo "Unexpected argument '$1'"
-        print_help_and_exit 1
-      elif [[ -z "$2" ]]; then
-        echo "Container (-c,--container) must be non-empty"
-        print_help_and_exit 1
-      fi
-      cont_name="$2"
-      shift 2
-      ;;
-    --port)
-      # Parse port(s) arg, and append the result to 'port_mappings'
-      # Note: port(s) may be specified in bracketed notation:
-      #   [a:b,c:d,...,y:z]
-      next_ports="$(echo "$2" | sed -e 's/\[//g' -e 's/\]//g' -e 's/,/ /g')"
-      if [[ "${#port_mappings[@]}" -gt 0 ]]; then
-        next_ports=" $next_ports"
-      fi
-      port_mappings+=("$next_ports")
-      shift 2
-      ;;
-    -m)
-      ;&
-    --mount)
-      if [[ -z "$2" ]]; then
-        echo "Mount (-m,--mount) must be non-empty"
-      fi
-      mount_name="$2"
-      shift 2
-      ;;
-    --mount-existing)
-      mount_existing=1
-      shift 1
-      ;;
-    -h)
-      ;&
-    --help)
-      print_help_and_exit 0
-      ;;
-    *)
-      if [[ -z "$1" ]]; then
-        echo "Invalid positional argument '$1'"
-        print_help_and_exit 1
-      elif [[ -z "$image_name" ]]; then
-        image_name="$1"
-      elif [[ -z "$cont_name" ]]; then
-        cont_name="$1"
-      else
-        echo "Unexpected argument '$1'"
-        print_help_and_exit 1
-      fi
-      shift 1
-      ;;
-  esac
-done
-
-
-if [[ -z "$image_name" ]]; then
-  image_name="bluetradingsystems/spark-crypto-dev"
-fi
-
-host_name="$(hostname)"
-if [[ -n "$cont_name" ]]; then
-  host_name="$host_name.$cont_name"
-fi
-
-if [[ -z "$mount_name" ]]; then
-  mount_name="$cont_name"
-fi
-
-if [[ -z "$mount_name" && -z "$cont_name" ]]; then
-  echo "Please specify mount (-m,--mount) and/or container (-c,--container)"
-  print_help_and_exit 1
-fi
-
-if [[ -z "$docker_user" ]]; then
-  docker_user="$USER"
-fi
-
-home_src=$mount_prefix/$mount_name
-home_tgt=$HOME
-repo_src=$(git rev-parse --show-superproject-working-tree)
-repo_tgt=$HOME/$(basename "$repo_src")
-working_dir=$HOME
-
-if [[ $mount_existing -eq 0 && -e "$home_src" ]]; then
-  # Don't overwrite existing dir (might be mounted in another container)
-  echo "Mount dir '$home_src' already exists (use --mount-existing to mount an existing directory)"
-  print_help_and_exit 1
-fi
-
-mkdir -p "$home_src"
-
-if [[ "${#port_mappings[@]}" -eq 0 ]]; then
-  port_mappings=("8000:8000" "8001:8001" "8002:8002" "8003:8003")
-fi
-
-# Adapt port_mappings into args for `docker run` by prepending "-p " to each
-# item
-declare -a docker_port_args=()
-for port_mapping in "${port_mappings[@]}"; do
-  docker_port_args+=("-p $port_mapping")
-done
-
-echo "Starting container '$cont_name'
-image_name  : $image_name
-cont_name   : $cont_name
-home_src    : $home_src
-home_tgt    : $home_tgt
-repo_src    : $repo_src
-repo_tgt    : $repo_tgt
-working dir : $working_dir
-ports       : ${port_mappings[*]}
-"
-
-# DON'T wrap $docker_port_args in quotes. We want bash to split args by
-# whitespace
-docker run \
-  --net bridge \
-  -h "$host_name" \
-  -e "TZ=America/New_York" \
-  --cap-add=SYS_PTRACE \
-  --security-opt seccomp=unconfined \
-  --name "$cont_name" \
-  -v "$home_src:$home_tgt" \
-  -v "$repo_src:$repo_tgt" \
-  -w "$working_dir" \
-  ${docker_port_args[*]} \
-  --shm-size=4024m \
-  -t \
-  -i \
-  -d \
-  -e DISPLAY="$DISPLAY" \
-  "$image_name" \
-  bash
-
-# Add user w/ same uid and gid as the current user outside of docker, so the
-# user inside the docker has file permissions in the mounted dir.
-docker_group="$docker_user"
-docker_user_uid="$(id -u "$USER")"
-docker_user_gid="$(id -g "$USER")"
-
-echo "Adding user in container '$cont_name'
-name : $docker_user
-uid  : $docker_user_uid
-gid  : $docker_user_gid"
-
-if [[ -z "$docker_pass" ]]; then
-  docker_pass="$docker_user"
-  echo "Giving user '$docker_user' a secure password: $docker_pass"
-fi
-
-docker exec -u root -it "$cont_name" groupadd -g "$docker_user_gid" "$docker_group"
-docker exec -u root -it "$cont_name" useradd -u "$docker_user_uid" -g "$docker_user_gid" "$docker_user"
-docker exec -u root -it "$cont_name" usermod --password "$(openssl passwd -1 "$docker_pass")" "$docker_user"
-docker exec -u root -it "$cont_name" usermod -aG sudo "$docker_user"
-docker exec -u root -it "$cont_name" "$repo_tgt/externals/src/emumba/install_emumba-deribit-connector.sh"
@@ -1,6 +1,6 @@
 {
  "sdk": {
-    "version": "6.0.200",
+    "version": "2.1.508",
    "rollForward": "latestMajor"
  }
 }
@@ -1,22 +1,17 @@
 astroid==2.7.3
 autopep8==1.5.7
-certifi==2023.5.7
-charset-normalizer==3.1.0
+cffi==1.14.6
 colorama==0.4.4
-idna==3.4
 isort==5.9.3
 lazy-object-proxy==1.6.0
 mccabe==0.6.1
 platformdirs==2.3.0
-protobuf==4.21.12
+protobuf==3.19.1
 pybars3==0.9.7
 pycodestyle==2.7.0
 pycparser==2.20
 pylint==2.10.2
 PyMeta3==0.5.1
-requests==2.31.0
-termcolor==1.1.0
 toml==0.10.2
-urllib3==2.0.3
 wrapt==1.12.1
 yapf==0.31.0
@@ -0,0 +1,41 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26730.10
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "sparkd", "src\server\sparkd\sparkd.vcxproj", "{BBBAFD38-312D-4A8D-9AF0-F2BDEE72CE6F}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libspark", "build\src\lib\libspark.vcxproj", "{502FD050-679A-3B50-B438-098500700919}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		MinSizeRel|x64 = MinSizeRel|x64
+		Release|x64 = Release|x64
+		RelWithDebInfo|x64 = RelWithDebInfo|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{BBBAFD38-312D-4A8D-9AF0-F2BDEE72CE6F}.Debug|x64.ActiveCfg = Debug|x64
+		{BBBAFD38-312D-4A8D-9AF0-F2BDEE72CE6F}.Debug|x64.Build.0 = Debug|x64
+		{BBBAFD38-312D-4A8D-9AF0-F2BDEE72CE6F}.MinSizeRel|x64.ActiveCfg = Release|x64
+		{BBBAFD38-312D-4A8D-9AF0-F2BDEE72CE6F}.MinSizeRel|x64.Build.0 = Release|x64
+		{BBBAFD38-312D-4A8D-9AF0-F2BDEE72CE6F}.Release|x64.ActiveCfg = Release|x64
+		{BBBAFD38-312D-4A8D-9AF0-F2BDEE72CE6F}.Release|x64.Build.0 = Release|x64
+		{BBBAFD38-312D-4A8D-9AF0-F2BDEE72CE6F}.RelWithDebInfo|x64.ActiveCfg = Release|x64
+		{BBBAFD38-312D-4A8D-9AF0-F2BDEE72CE6F}.RelWithDebInfo|x64.Build.0 = Release|x64
+		{502FD050-679A-3B50-B438-098500700919}.Debug|x64.ActiveCfg = Debug|x64
+		{502FD050-679A-3B50-B438-098500700919}.Debug|x64.Build.0 = Debug|x64
+		{502FD050-679A-3B50-B438-098500700919}.MinSizeRel|x64.ActiveCfg = MinSizeRel|x64
+		{502FD050-679A-3B50-B438-098500700919}.MinSizeRel|x64.Build.0 = MinSizeRel|x64
+		{502FD050-679A-3B50-B438-098500700919}.Release|x64.ActiveCfg = Release|x64
+		{502FD050-679A-3B50-B438-098500700919}.Release|x64.Build.0 = Release|x64
+		{502FD050-679A-3B50-B438-098500700919}.RelWithDebInfo|x64.ActiveCfg = RelWithDebInfo|x64
+		{502FD050-679A-3B50-B438-098500700919}.RelWithDebInfo|x64.Build.0 = RelWithDebInfo|x64
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {6A7249D7-B40C-4656-9347-60072D0B8FDB}
+	EndGlobalSection
+EndGlobal
@@ -1,23 +1,26 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.3.32922.545
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30114.105
 MinimumVisualStudioVersion = 15.0.26124.0
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_api", "src\client\spark_api\spark_api.csproj", "{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libspark", "build\src\lib\libspark.vcxproj", "{9FA60215-26AF-3EB7-AB89-D4F4B126EF40}"
+EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Spark", "src\client\spark\Spark.csproj", "{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Spark.Console", "src\client\Spark.Console\Spark.Console.csproj", "{387566C6-C6F6-412C-A30C-9855BBCB4816}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "sparkcmd", "src\client\sparkcmd\sparkcmd.csproj", "{387566C6-C6F6-412C-A30C-9855BBCB4816}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_core", "src\client\spark_core\spark_core.csproj", "{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ZERO_CHECK", "build\ZERO_CHECK.vcxproj", "{A1B7276B-8F81-3D58-A22E-870AF28DF9B9}"
+EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_sdk", "src\client\spark_sdk\spark_sdk.csproj", "{6963C314-83C4-4667-B0D0-C2F7AE208C29}"
+	ProjectSection(ProjectDependencies) = postProject
+		{9FA60215-26AF-3EB7-AB89-D4F4B126EF40} = {9FA60215-26AF-3EB7-AB89-D4F4B126EF40}
+	EndProjectSection
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_test", "src\client\spark_test\spark_test.csproj", "{ECD78CC5-138F-4809-A764-2358C2AC2E82}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_websocket", "src\client\spark_websocket\spark_websocket.csproj", "{3201359D-C071-4089-9EDE-B04D759F1508}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_api_server", "src\client\spark_api_server\spark_api_server.csproj", "{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x64 = Debug|x64
@@ -34,6 +37,14 @@ Global
 		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.Release|x64.Build.0 = Release|x64
 		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.RelWithDebInfo|x64.ActiveCfg = Release|x64
 		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.RelWithDebInfo|x64.Build.0 = Release|x64
+		{9FA60215-26AF-3EB7-AB89-D4F4B126EF40}.Debug|x64.ActiveCfg = Debug|x64
+		{9FA60215-26AF-3EB7-AB89-D4F4B126EF40}.Debug|x64.Build.0 = Debug|x64
+		{9FA60215-26AF-3EB7-AB89-D4F4B126EF40}.MinSizeRel|x64.ActiveCfg = MinSizeRel|x64
+		{9FA60215-26AF-3EB7-AB89-D4F4B126EF40}.MinSizeRel|x64.Build.0 = MinSizeRel|x64
+		{9FA60215-26AF-3EB7-AB89-D4F4B126EF40}.Release|x64.ActiveCfg = Release|x64
+		{9FA60215-26AF-3EB7-AB89-D4F4B126EF40}.Release|x64.Build.0 = Release|x64
+		{9FA60215-26AF-3EB7-AB89-D4F4B126EF40}.RelWithDebInfo|x64.ActiveCfg = RelWithDebInfo|x64
+		{9FA60215-26AF-3EB7-AB89-D4F4B126EF40}.RelWithDebInfo|x64.Build.0 = RelWithDebInfo|x64
 		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.Debug|x64.ActiveCfg = Debug|x64
 		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.Debug|x64.Build.0 = Debug|x64
 		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.MinSizeRel|x64.ActiveCfg = Release|x64
@@ -58,6 +69,14 @@ Global
 		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Release|x64.Build.0 = Release|x64
 		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.RelWithDebInfo|x64.ActiveCfg = Release|x64
 		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.RelWithDebInfo|x64.Build.0 = Release|x64
+		{A1B7276B-8F81-3D58-A22E-870AF28DF9B9}.Debug|x64.ActiveCfg = Debug|x64
+		{A1B7276B-8F81-3D58-A22E-870AF28DF9B9}.Debug|x64.Build.0 = Debug|x64
+		{A1B7276B-8F81-3D58-A22E-870AF28DF9B9}.MinSizeRel|x64.ActiveCfg = MinSizeRel|x64
+		{A1B7276B-8F81-3D58-A22E-870AF28DF9B9}.MinSizeRel|x64.Build.0 = MinSizeRel|x64
+		{A1B7276B-8F81-3D58-A22E-870AF28DF9B9}.Release|x64.ActiveCfg = Release|x64
+		{A1B7276B-8F81-3D58-A22E-870AF28DF9B9}.Release|x64.Build.0 = Release|x64
+		{A1B7276B-8F81-3D58-A22E-870AF28DF9B9}.RelWithDebInfo|x64.ActiveCfg = RelWithDebInfo|x64
+		{A1B7276B-8F81-3D58-A22E-870AF28DF9B9}.RelWithDebInfo|x64.Build.0 = RelWithDebInfo|x64
 		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.Debug|x64.ActiveCfg = Debug|x64
 		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.Debug|x64.Build.0 = Debug|x64
 		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.MinSizeRel|x64.ActiveCfg = Release|x64
@@ -74,22 +93,6 @@ Global
 		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.Release|x64.Build.0 = Release|x64
 		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.RelWithDebInfo|x64.ActiveCfg = Release|x64
 		{ECD78CC5-138F-4809-A764-2358C2AC2E82}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Debug|x64.ActiveCfg = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Debug|x64.Build.0 = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.MinSizeRel|x64.ActiveCfg = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.MinSizeRel|x64.Build.0 = Debug|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Release|x64.ActiveCfg = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.Release|x64.Build.0 = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{3201359D-C071-4089-9EDE-B04D759F1508}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Debug|x64.ActiveCfg = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Debug|x64.Build.0 = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.MinSizeRel|x64.ActiveCfg = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.MinSizeRel|x64.Build.0 = Debug|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Release|x64.ActiveCfg = Release|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.Release|x64.Build.0 = Release|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{2B8C5D01-FF78-4BFA-B332-5E430586DAF9}.RelWithDebInfo|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -1,37 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System.Numerics;
-
-class AdditiveInverse : IArithmeticExpression<double> {
-   readonly IArithmeticExpression expression;
-
-   public AdditiveInverse(IArithmeticExpression expression) =>
-      this.expression = expression;
-
-   public static AdditiveInverse<T> Create<T>(IArithmeticExpression<T> expression)
-      where T : INumber<T> =>
-      new(expression);
-
-   public double Evaluate(IDictionary<string, object?> env) =>
-      -evaluateArg(expression, nameof(expression), env);
-
-   static double evaluateArg(
-      IArithmeticExpression expr, string name, IDictionary<string, object?> env) {
-      var obj = expr.Evaluate(env);
-      return ConvertUtils.try_convert(expr.Evaluate(env), out double dbl) ? dbl :
-         throw new Exception(
-            $"Invalid AdditiveInverse. {name} is of type {obj?.GetType()} " +
-            $"(expected {typeof(double)})");
-   }
-}
-
-class AdditiveInverse<T> : IArithmeticExpression<T>
-   where T : INumber<T> {
-   readonly IArithmeticExpression<T> expression;
-
-   public AdditiveInverse(IArithmeticExpression<T> expression) =>
-      this.expression = expression;
-
-   public T Evaluate(IDictionary<string, object?> env) =>
-      -expression.Evaluate(env);
-}
@@ -1,45 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System.Numerics;
-
-public static class ArithmeticExpressionExtensions {
-   public static IArithmeticExpression<TResult> Add<TLeft, TRight, TResult>(
-      this IArithmeticExpression<TLeft> left, IArithmeticExpression<TRight> right)
-      where TLeft :
-         INumber<TLeft>,
-         IAdditionOperators<TLeft, TRight, TResult>
-      where TRight : INumber<TRight>
-      where TResult : INumber<TResult> =>
-      new Sum<TLeft, TRight, TResult>(left, right);
-
-   public static IArithmeticExpression<TResult> Subtract<TLeft, TRight, TResult>(
-      this IArithmeticExpression<TLeft> left, IArithmeticExpression<TRight> right)
-      where TLeft :
-         INumber<TLeft>,
-         ISubtractionOperators<TLeft, TRight, TResult>
-      where TRight : INumber<TRight>
-      where TResult : INumber<TResult> =>
-      new Difference<TLeft, TRight, TResult>(left, right);
-
-   public static IArithmeticExpression<TResult> Multiply<TLeft, TRight, TResult>(
-      this IArithmeticExpression<TLeft> left, IArithmeticExpression<TRight> right)
-      where TLeft :
-         INumber<TLeft>,
-         IMultiplyOperators<TLeft, TRight, TResult>
-      where TRight : INumber<TRight>
-      where TResult : INumber<TResult> =>
-      new Product<TLeft, TRight, TResult>(left, right);
-
-   public static IArithmeticExpression<TResult> Divide<TLeft, TRight, TResult>(
-      this IArithmeticExpression<TLeft> left, IArithmeticExpression<TRight> right)
-      where TLeft :
-         INumber<TLeft>,
-         IDivisionOperators<TLeft, TRight, TResult>
-      where TRight : INumber<TRight>
-      where TResult : INumber<TResult> =>
-      new Quotient<TLeft, TRight, TResult>(left, right);
-
-   public static IArithmeticExpression<T> Negate<T>(this IArithmeticExpression<T> expression)
-      where T : INumber<T> =>
-      new AdditiveInverse<T>(expression);
-}
@@ -1,98 +0,0 @@
-%namespace Bts.ArithmeticExpressions
-%partial
-%visibility internal
-%tokentype Token
-%parsertype ArithmeticExpressionParserImpl
-
-%union {
-   public int Integer;
-   public double Real;
-   public string Identifier;
-   public ImmutableList<IArithmeticExpression> Arguments;
-   public ImmutableList<Assignment> Assignments;
-   public IArithmeticExpression Argument;
-   public Assignment Assignment;
-   public ArithmeticProgram Program;
-}
-
-/* Constants  */
-%token INTEGER_CONSTANT REAL_CONSTANT
-/* Arithmetic Operators */
-%token ADD, SUBTRACT, MULTIPLY, DIVIDE, EQUALS
-/* Syntax */
-%token PARENTHESIS_OPEN, PARENTHESIS_CLOSE, COMMA, IDENTIFIER
-
-%left ADD SUBTRACT
-%left MULTIPLY DIVIDE
-%nonassoc EQUALS
-
-%type <Argument> Argument
-%type <Arguments> Arguments
-%type <Assignment> Assignment
-%type <Assignments> Assignments
-%type <Program> Program
-
-%%
-
-Program :
-   Assignments {
-      $$ = new($1);
-   }
-   ;
-
-Assignments :
-   Assignment {
-      $$ = ImmutableList<Assignment>.Empty.Add($1);
-   }
-   | Assignments Assignment {
-      $$ = $1.Add($2);
-   }
-   ;
-
-Assignment :
-   IDENTIFIER EQUALS Argument {
-      $$ = new($1.Identifier, $3);
-   }
-   ;
-
-Argument :
-   IDENTIFIER PARENTHESIS_OPEN Arguments PARENTHESIS_CLOSE {
-      $$ = new Function($1.Identifier, $3);
-   }
-   | INTEGER_CONSTANT {
-      $$ = new IntegerConstant($1.Integer);
-   }
-   | REAL_CONSTANT {
-      $$ = new RealConstant($1.Real);
-   }
-   | IDENTIFIER {
-      $$ = new Variable($1.Identifier);
-   }
-   | SUBTRACT Argument {
-      $$ = $2.Negate();
-   }
-   | PARENTHESIS_OPEN Argument PARENTHESIS_CLOSE {
-      $$ = $2;
-   }
-   | Argument MULTIPLY Argument {
-      $$ = $1.Multiply($3);
-   }
-   | Argument DIVIDE Argument {
-      $$ = $1.Divide($3);
-   }
-   | Argument ADD Argument {
-      $$ = $1.Add($3);
-   }
-   | Argument SUBTRACT Argument {
-      $$ = $1.Subtract($3);
-   }
-   ;
-
-Arguments :
-   Argument {
-      $$ = ImmutableList<IArithmeticExpression>.Empty.Add($1);
-   }
-   | Arguments COMMA Argument {
-      $$ = $1.Add($3);
-   }
-   ;
@@ -1,19 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System.Text;
-
-partial class ArithmeticExpressionParserImpl {
-   public ArithmeticExpressionParserImpl() : base(null) { }
-
-   public ValueType Parse(Stream stream) {
-      Scanner = new ArithmeticExpressionScanner(stream);
-      Parse();
-      return CurrentSemanticValue;
-   }
-
-   public ValueType Parse(string str) {
-      var inputBuffer = Encoding.Default.GetBytes(str);
-      using var stream = new MemoryStream(inputBuffer);
-      return Parse(stream);
-   }
-}
@@ -1,11 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System;
-
-partial class ArithmeticExpressionScanner {
-   public override void yyerror(string format, params object[] args) {
-      base.yyerror(format, args);
-      Console.WriteLine(format, args);
-      Console.WriteLine();
-   }
-}
@@ -1,70 +0,0 @@
-%namespace Bts.ArithmeticExpressions
-%scannertype ArithmeticExpressionScanner
-%visibility internal
-%tokentype Token
-
-%option stack, minimize, parser, verbose, persistbuffer, noembedbuffers 
-
-Letter             [a-zA-Z]
-Identifier         {Letter}({Letter}*[0-9]*_*)*
-IntegerConstant    -?[0-9]+
-RealConstant       -?[0-9]+\.[0-9]+
-ParenthesisOpen    \(
-ParenthesisClose   \)
-Add                \+
-Subtract           \-
-Multiply           \*
-Divide             /
-Equals             =
-Comma              ,
-
-%%
-
-{IntegerConstant} {
-   yylval.Integer = int.Parse(yytext);
-   return (int)Token.INTEGER_CONSTANT;
-}
-
-{RealConstant} {
-   yylval.Real = double.Parse(yytext);
-   return (int)Token.REAL_CONSTANT;
-}
-
-{Identifier} {
-   yylval.Identifier = yytext;
-   return (int)Token.IDENTIFIER;
-}
-
-{ParenthesisOpen} {
-   return (int)Token.PARENTHESIS_OPEN;
-}
-
-{ParenthesisClose} {
-   return (int)Token.PARENTHESIS_CLOSE;
-}
-
-{Add} {
-   return (int)Token.ADD;
-}
-
-{Subtract} {
-   return (int)Token.SUBTRACT;
-}
-
-{Multiply} {
-   return (int)Token.MULTIPLY;
-}
-
-{Divide} {
-   return (int)Token.DIVIDE;
-}
-
-{Equals} {
-   return (int)Token.EQUALS;
-}
-
-{Comma} {
-   return (int)Token.COMMA;
-}
-
-%%
@@ -1,24 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.24.3" />
-    <PackageReference Include="YaccLexTools" Version="1.2.2" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
-    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
-  </ItemGroup>
-
-  <ItemGroup Label="ArithmeticExpression">
-    <Scanner Include="ArithmeticExpressionTokens.lex" />
-    <Parser Include="ArithmeticExpressionGrammar.y" />
-  </ItemGroup>
-
-</Project>
@@ -1,21 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System.Collections.Immutable;
-
-class ArithmeticProgram : IArithmeticProgram {
-   readonly ImmutableList<Assignment>? assignments;
-
-   public ArithmeticProgram(Assignment assignment) =>
-      assignments = ImmutableList<Assignment>.Empty.Add(assignment);
-
-   public ArithmeticProgram(ImmutableList<Assignment> assignments) =>
-      this.assignments = assignments;
-
-   IEnumerable<string> IArithmeticProgram.OutputIdentifiers =>
-      assignments.empty_if_null()
-         .Select(a => a.Identifier ?? throw new Exception("Identifier string is null"))
-         .Distinct();
-
-   IDictionary<string, object?> IArithmeticProgram.Evaluate(IDictionary<string, object?> env) =>
-      assignments.empty_if_null().Aggregate(env, (e, a) => a.Evaluate(e));
-}
@@ -1,16 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using Bts.ExpressionCore;
-
-public static class ArithmeticProgramParser {
-   public static IArithmeticProgram Parse(Stream expression) =>
-      new Parser().Parse(expression);
-
-   public static IArithmeticProgram Parse(string expression) =>
-      new Parser().Parse(expression);
-
-   class Parser : IParser<ArithmeticProgram> {
-      public ArithmeticProgram Parse(Stream expression) =>
-         new ArithmeticExpressionParserImpl().Parse(expression).Program;
-   }
-}
@@ -1,24 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-public class Assignment {
-   public Assignment(string? identifier, IArithmeticExpression? value) {
-      Identifier = identifier ?? throw new ArgumentNullException(nameof(identifier));
-      Value = value ?? throw new ArgumentNullException(nameof(identifier));
-   }
-
-   public string? Identifier { get; }
-   public IArithmeticExpression? Value { get; }
-
-   public IDictionary<string, object?> Evaluate(IDictionary<string, object?> env) {
-      if (Identifier is null) {
-         throw new InvalidOperationException("Identifier is null");
-      }
-      if (Value is null) {
-         throw new InvalidOperationException($"Value is null (Identifier '{Identifier}')");
-      }
-      env[Identifier] = Value.Evaluate(env) ?? throw new Exception(
-         $"{nameof(Assignment)}.{nameof(Value)} (of type '{Value.GetType()}') " +
-         $"evaluated to null (Identifier '{Identifier}')");
-      return env;
-   }
-}
@@ -1,45 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System.Numerics;
-
-public class Difference : IArithmeticExpression<double> {
-   readonly IArithmeticExpression lhs;
-   readonly IArithmeticExpression rhs;
-
-   public Difference(IArithmeticExpression lhs, IArithmeticExpression rhs) {
-      this.lhs = lhs;
-      this.rhs = rhs;
-   }
-
-   public static Difference<T, T, T> Create<T>(
-      IArithmeticExpression<T> left, IArithmeticExpression<T> right)
-      where T : INumber<T>, ISubtractionOperators<T, T, T> =>
-      new(left, right);
-
-   public double Evaluate(IDictionary<string, object?> env) =>
-      evaluateArg(lhs, nameof(lhs), env) - evaluateArg(rhs, nameof(rhs), env);
-
-   static double evaluateArg(
-      IArithmeticExpression expr, string name, IDictionary<string, object?> env) {
-      var obj = expr.Evaluate(env);
-      return ConvertUtils.try_convert(expr.Evaluate(env), out double dbl) ? dbl :
-         throw new Exception(
-            $"Invalid Difference. {name} is of type {obj?.GetType()} (expected {typeof(double)})");
-   }
-}
-
-public class Difference<TLeft, TRight, TResult> : IArithmeticExpression<TResult>
-   where TLeft : INumber<TLeft>, ISubtractionOperators<TLeft, TRight, TResult>
-   where TRight : INumber<TRight>
-   where TResult : INumber<TResult> {
-   readonly IArithmeticExpression<TLeft> left;
-   readonly IArithmeticExpression<TRight> right;
-
-   public Difference(IArithmeticExpression<TLeft> left, IArithmeticExpression<TRight> right) {
-      this.left = left;
-      this.right = right;
-   }
-
-   public TResult Evaluate(IDictionary<string, object?> env) =>
-      left.Evaluate(env) - right.Evaluate(env);
-}
@@ -1,208 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System.Collections;
-using System.Diagnostics.CodeAnalysis;
-
-class EvaluationEnvironment : IDictionary<string, object?>, IReadOnlyDictionary<string, object?> {
-   IDictionary<string, object?> outerEnv;
-   IDictionary<string, object?> innerEnv = new Dictionary<string, object?>();
-   int? count;
-
-   public EvaluationEnvironment(IDictionary<string, object?> initial) =>
-      outerEnv = initial;
-
-   public object? this[string key] {
-      get {
-         if (innerEnv.TryGetValue(key, out var rv)) {
-            return rv;
-         }
-         if (outerEnv.TryGetValue(key, out rv)) {
-            return rv;
-         }
-         throw new Exception($"Undefined identifier '{key}'");
-      }
-      set {
-         if (count.HasValue && !ContainsKey(key)) {
-            count = count.Value + 1;
-            innerEnv.Add(key, value);
-            return;
-         }
-         innerEnv[key] = value;
-      }
-   }
-
-   public IDictionary<string, object?> Result =>
-      innerEnv;
-
-   public ICollection<string> Keys =>
-      new KeyCollection(outerEnv, innerEnv);
-
-   public ICollection<object?> Values =>
-      new ValueCollection(outerEnv, innerEnv);
-
-   public int Count =>
-      count ??= countKeys(outerEnv, innerEnv);
-
-   public bool IsReadOnly => throw new NotImplementedException();
-
-   public bool ContainsKey(string key) =>
-      innerEnv.ContainsKey(key) || outerEnv.ContainsKey(key);
-
-   public bool TryGetValue(string key, [MaybeNullWhen(false)] out object? value) =>
-      innerEnv.TryGetValue(key, out value) || outerEnv.TryGetValue(key, out value);
-
-   public IEnumerator<KeyValuePair<string, object?>> GetEnumerator() {
-      foreach (var kv in innerEnv) {
-         yield return kv;
-      }
-      foreach (var kv in outerEnv.Except()) {
-         if (!innerEnv.ContainsKey(kv.Key)) {
-            yield return kv;
-         }
-      }
-   }
-
-   public void Add(string key, object? value) {
-      if (ContainsKey(key)) {
-         throw new ArgumentException(
-            $"An element with the same key ({key}) already exists", nameof(key));
-      }
-      innerEnv.Add(key, value);
-   }
-
-   public void Add(KeyValuePair<string, object?> item) =>
-      Add(item.Key, item.Value);
-
-   public void Clear() =>
-      throw new NotSupportedException();
-
-   public bool Contains(KeyValuePair<string, object?> item) =>
-      TryGetValue(item.Key, out var v) && Equals(v, item.Value);
-
-   public void CopyTo(KeyValuePair<string, object?>[] array, int arrayIndex) {
-      foreach (var kv in innerEnv) {
-         array[arrayIndex++] = kv;
-      }
-      foreach (var kv in outerEnv) {
-         if (!innerEnv.ContainsKey(kv.Key)) {
-            array[arrayIndex++] = kv;
-         }
-      }
-   }
-
-   public bool Remove(string key) =>
-      throw new NotSupportedException();
-
-   public bool Remove(KeyValuePair<string, object?> item) =>
-      throw new NotSupportedException();
-
-   static int countKeys(IDictionary<string, object?> d1, IDictionary<string, object?> d2) =>
-      d1.Count > d2.Count ?
-         d1.Count + d2.Keys.WhereNot(d1.ContainsKey).Count() :
-         d2.Count + d1.Keys.WhereNot(d2.ContainsKey).Count();
-
-   IEnumerable<string> IReadOnlyDictionary<string, object?>.Keys => Keys;
-   IEnumerable<object?> IReadOnlyDictionary<string, object?>.Values => Values;
-   IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
-
-   class KeyCollection : ICollection<string> {
-      readonly IDictionary<string, object?> outerEnv;
-      readonly IDictionary<string, object?> innerEnv;
-
-      public KeyCollection(
-         IDictionary<string, object?> outerEnv, IDictionary<string, object?> innerEnv) {
-         this.outerEnv = outerEnv;
-         this.innerEnv = innerEnv;
-      }
-
-      public int Count =>
-         countKeys(outerEnv, innerEnv);
-
-      public bool IsReadOnly => true;
-
-      public void Add(string item) =>
-         throw new NotSupportedException();
-
-      public void Clear() =>
-         throw new NotSupportedException();
-
-      public bool Contains(string item) =>
-         innerEnv.ContainsKey(item) || outerEnv.ContainsKey(item);
-
-      public void CopyTo(string[] array, int arrayIndex) {
-         foreach (var k in this) {
-            array[arrayIndex++] = k;
-         }
-      }
-
-      public IEnumerator<string> GetEnumerator() {
-         foreach (var k in innerEnv.Keys) {
-            yield return k;
-         }
-         foreach (var k in outerEnv.Keys) {
-            if (!innerEnv.ContainsKey(k)) {
-               yield return k;
-            }
-         }
-      }
-
-      public bool Remove(string item) =>
-         throw new NotSupportedException();
-
-      IEnumerator IEnumerable.GetEnumerator() =>
-         GetEnumerator();
-   }
-
-   class ValueCollection : ICollection<object?> {
-      readonly IDictionary<string, object?> outerEnv;
-      readonly IDictionary<string, object?> innerEnv;
-
-      public ValueCollection(
-         IDictionary<string, object?> outerEnv, IDictionary<string, object?> innerEnv) {
-         this.outerEnv = outerEnv;
-         this.innerEnv = innerEnv;
-      }
-
-      public int Count =>
-         // Not a typo (obv, numValues == numKeys)
-         countKeys(outerEnv, innerEnv);
-
-      public bool IsReadOnly => true;
-
-      public void Add(object? item) =>
-         throw new NotSupportedException();
-
-      public void Clear() =>
-         throw new NotSupportedException();
-
-      public bool Contains(object? item) =>
-         innerEnv.Values.Contains(item) ||
-         outerEnv
-            .Where(kv => !innerEnv.ContainsKey(kv.Key))
-            .Select(kv => kv.Value)
-            .Contains(item);
-
-      public void CopyTo(object?[] array, int arrayIndex) {
-         foreach (var k in this) {
-            array[arrayIndex++] = k;
-         }
-      }
-
-      public IEnumerator<object?> GetEnumerator() {
-         foreach (var k in innerEnv.Values) {
-            yield return k;
-         }
-         foreach (var kv in outerEnv) {
-            if (!innerEnv.ContainsKey(kv.Key)) {
-               yield return kv.Value;
-            }
-         }
-      }
-
-      public bool Remove(object? item) =>
-         throw new NotSupportedException();
-
-      IEnumerator IEnumerable.GetEnumerator() =>
-         GetEnumerator();
-   }
-}
@@ -1,34 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using Spark.Core;
-
-using System.Collections.Immutable;
-using System.Data;
-
-public class Function : IArithmeticExpression {
-   public Function(string? identifier, ImmutableList<IArithmeticExpression>? arguments) {
-      Identifier = identifier;
-      Arguments = arguments;
-   }
-
-   public string? Identifier { get; }
-   public ImmutableList<IArithmeticExpression>? Arguments { get; }
-
-   public object? Evaluate(IDictionary<string, object?> env) {
-      if (Identifier is null) {
-         throw new InvalidOperationException("Identifier is null");
-      }
-      if (Arguments is null) {
-         throw new InvalidOperationException("Arguments is null");
-      }
-      if (Identifier == "ifNull") {
-         throw new NotImplementedException("'ifNull' function not yet implemented");
-      }
-      var argVals = Arguments.Select(e => e.Evaluate(env)).ToArray();
-      var argTypes = Array.ConvertAll(argVals, v => v?.GetType() ?? typeof(object));
-      var method = typeof(Math).GetMethod(Identifier, argTypes) ??
-         throw new EvaluateException(
-            $"Failed to find method '{Identifier}({", ".join(argTypes)})' in {typeof(Math)}");
-      return method.Invoke(null, argVals);
-   }
-}
@@ -1,720 +0,0 @@
-// ==============================================================
-// <auto-generated>
-// This code automatically produced from an embedded resource.
-// Do not edit this file, or it will become incompatible with 
-// the specification from which it was generated.
-// </auto-generated>
-// ==============================================================
-
-using System;
-using System.IO;
-using System.Text;
-using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
-using System.Runtime.Serialization;
-using System.Globalization;
-
-namespace QUT.GplexBuffers
-{
-// Code copied from GPLEX embedded resource
-    [Serializable]
-    internal class BufferException : Exception
-    {
-        public BufferException() { }
-        public BufferException(string message) : base(message) { }
-        public BufferException(string message, Exception innerException)
-            : base(message, innerException) { }
-        protected BufferException(SerializationInfo info, StreamingContext context)
-            : base(info, context) { }
-    }
-
-    internal abstract class ScanBuff
-    {
-        private string fileNm;
-
-        public const int EndOfFile = -1;
-        public const int UnicodeReplacementChar = 0xFFFD;
-
-        public bool IsFile { get { return (fileNm != null); } }
-        public string FileName { get { return fileNm; } set { fileNm = value; } }
-
-        public abstract int Pos { get; set; }
-        public abstract int Read();
-        public virtual void Mark() { }
-
-        public abstract string GetString(int begin, int limit);
-
-        public static ScanBuff GetBuffer(string source)
-        {
-            return new StringBuffer(source);
-        }
-
-        public static ScanBuff GetBuffer(IList<string> source)
-        {
-            return new LineBuffer(source);
-        }
-
-#if (!NOFILES)
-        public static ScanBuff GetBuffer(Stream source)
-        {
-            return new BuildBuffer(source);
-        }
-
-#if (!BYTEMODE)
-        public static ScanBuff GetBuffer(Stream source, int fallbackCodePage)
-        {
-            return new BuildBuffer(source, fallbackCodePage);
-        }
-#endif // !BYTEMODE
-#endif // !NOFILES
-    }
-
-    #region Buffer classes
-
-    // ==============================================================
-    // =====  Definitions for various ScanBuff derived classes   ====
-    // ==============================================================
-    // ===============         String input          ================
-    // ==============================================================
-
-    /// <summary>
-    /// This class reads characters from a single string as
-    /// required, for example, by Visual Studio language services
-    /// </summary>
-    sealed class StringBuffer : ScanBuff
-    {
-        string str;        // input buffer
-        int bPos;          // current position in buffer
-        int sLen;
-
-        public StringBuffer(string source)
-        {
-            this.str = source;
-            this.sLen = source.Length;
-            this.FileName = null;
-        }
-
-        public override int Read()
-        {
-            if (bPos < sLen) return str[bPos++];
-            else if (bPos == sLen) { bPos++; return '\n'; }   // one strike, see new line
-            else { bPos++; return EndOfFile; }                // two strikes and you're out!
-        }
-
-        public override string GetString(int begin, int limit)
-        {
-            //  "limit" can be greater than sLen with the BABEL
-            //  option set.  Read returns a "virtual" EOL if
-            //  an attempt is made to read past the end of the
-            //  string buffer.  Without the guard any attempt 
-            //  to fetch yytext for a token that includes the 
-            //  EOL will throw an index exception.
-            if (limit > sLen) limit = sLen;
-            if (limit <= begin) return "";
-            else return str.Substring(begin, limit - begin);
-        }
-
-        public override int Pos
-        {
-            get { return bPos; }
-            set { bPos = value; }
-        }
-
-        public override string ToString() { return "StringBuffer"; }
-    }
-
-    // ==============================================================
-    //  The LineBuff class contributed by Nigel Horspool, 
-    //  nigelh@cs.uvic.cs
-    // ==============================================================
-
-    sealed class LineBuffer : ScanBuff
-    {
-        IList<string> line;    // list of source lines from a file
-        int numLines;          // number of strings in line list
-        string curLine;        // current line in that list
-        int cLine;             // index of current line in the list
-        int curLen;            // length of current line
-        int curLineStart;      // position of line start in whole file
-        int curLineEnd;        // position of line end in whole file
-        int maxPos;            // max position ever visited in whole file
-        int cPos;              // ordinal number of code in source
-
-        // Constructed from a list of strings, one per source line.
-        // The lines have had trailing '\n' characters removed.
-        public LineBuffer(IList<string> lineList)
-        {
-            line = lineList;
-            numLines = line.Count;
-            cPos = curLineStart = 0;
-            curLine = (numLines > 0 ? line[0] : "");
-            maxPos = curLineEnd = curLen = curLine.Length;
-            cLine = 1;
-            FileName = null;
-        }
-
-        public override int Read()
-        {
-            if (cPos < curLineEnd)
-                return curLine[cPos++ - curLineStart];
-            if (cPos++ == curLineEnd)
-                return '\n';
-            if (cLine >= numLines)
-                return EndOfFile;
-            curLine = line[cLine];
-            curLen = curLine.Length;
-            curLineStart = curLineEnd + 1;
-            curLineEnd = curLineStart + curLen;
-            if (curLineEnd > maxPos)
-                maxPos = curLineEnd;
-            cLine++;
-            return curLen > 0 ? curLine[0] : '\n';
-        }
-
-        // To speed up searches for the line containing a position
-        private int cachedPosition;
-        private int cachedIxdex;
-        private int cachedLineStart;
-
-        // Given a position pos within the entire source, the results are
-        //   ix     -- the index of the containing line
-        //   lstart -- the position of the first character on that line
-        private void findIndex(int pos, out int ix, out int lstart)
-        {
-            if (pos >= cachedPosition)
-            {
-                ix = cachedIxdex; lstart = cachedLineStart;
-            }
-            else
-            {
-                ix = lstart = 0;
-            }
-            while (ix < numLines)
-            {
-                int len = line[ix].Length + 1;
-                if (pos < lstart + len) break;
-                lstart += len;
-                ix++;
-            }
-            cachedPosition = pos;
-            cachedIxdex = ix;
-            cachedLineStart = lstart;
-        }
-
-        public override string GetString(int begin, int limit)
-        {
-            if (begin >= maxPos || limit <= begin) return "";
-            int endIx, begIx, endLineStart, begLineStart;
-            findIndex(begin, out begIx, out begLineStart);
-            int begCol = begin - begLineStart;
-            findIndex(limit, out endIx, out endLineStart);
-            int endCol = limit - endLineStart;
-            string s = line[begIx];
-            if (begIx == endIx)
-            {
-                // the usual case, substring all on one line
-                return (endCol <= s.Length) ?
-                    s.Substring(begCol, endCol - begCol)
-                    : s.Substring(begCol) + "\n";
-            }
-            // the string spans multiple lines, yuk!
-            StringBuilder sb = new StringBuilder();
-            if (begCol < s.Length)
-                sb.Append(s.Substring(begCol));
-            for (; ; )
-            {
-                sb.Append("\n");
-                s = line[++begIx];
-                if (begIx >= endIx) break;
-                sb.Append(s);
-            }
-            if (endCol <= s.Length)
-            {
-                sb.Append(s.Substring(0, endCol));
-            }
-            else
-            {
-                sb.Append(s);
-                sb.Append("\n");
-            }
-            return sb.ToString();
-        }
-
-        public override int Pos
-        {
-            get { return cPos; }
-            set
-            {
-                cPos = value;
-                findIndex(cPos, out cLine, out curLineStart);
-                // cLine should be the *next* line after curLine.
-                curLine = (cLine < numLines ? line[cLine++] : "");
-                curLineEnd = curLineStart + curLine.Length;
-            }
-        }
-
-        public override string ToString() { return "LineBuffer"; }
-    }
-
-#if (!NOFILES)
-    // ==============================================================
-    // =====     class BuildBuff : for unicode text files    ========
-    // ==============================================================
-
-    class BuildBuffer : ScanBuff
-    {
-        // Double buffer for char stream.
-        class BufferElement
-        {
-            StringBuilder bldr = new StringBuilder();
-            StringBuilder next = new StringBuilder();
-            int minIx;
-            int maxIx;
-            int brkIx;
-            bool appendToNext;
-
-            internal BufferElement() { }
-
-            internal int MaxIndex { get { return maxIx; } }
-            // internal int MinIndex { get { return minIx; } }
-
-            internal char this[int index]
-            {
-                get
-                {
-                    if (index < minIx || index >= maxIx)
-                        throw new BufferException("Index was outside data buffer");
-                    else if (index < brkIx)
-                        return bldr[index - minIx];
-                    else
-                        return next[index - brkIx];
-                }
-            }
-
-            internal void Append(char[] block, int count)
-            {
-                maxIx += count;
-                if (appendToNext)
-                    this.next.Append(block, 0, count);
-                else
-                {
-                    this.bldr.Append(block, 0, count);
-                    brkIx = maxIx;
-                    appendToNext = true;
-                }
-            }
-
-            internal string GetString(int start, int limit)
-            {
-                if (limit <= start)
-                    return "";
-                if (start >= minIx && limit <= maxIx)
-                    if (limit < brkIx) // String entirely in bldr builder
-                        return bldr.ToString(start - minIx, limit - start);
-                    else if (start >= brkIx) // String entirely in next builder
-                        return next.ToString(start - brkIx, limit - start);
-                    else // Must do a string-concatenation
-                        return
-                            bldr.ToString(start - minIx, brkIx - start) +
-                            next.ToString(0, limit - brkIx);
-                else
-                    throw new BufferException("String was outside data buffer");
-            }
-
-            internal void Mark(int limit)
-            {
-                if (limit > brkIx + 16) // Rotate blocks
-                {
-                    StringBuilder temp = bldr;
-                    bldr = next;
-                    next = temp;
-                    next.Length = 0;
-                    minIx = brkIx;
-                    brkIx = maxIx;
-                }
-            }
-        }
-
-        BufferElement data = new BufferElement();
-
-        int bPos;            // Postion index in the StringBuilder
-        BlockReader NextBlk; // Delegate that serves char-arrays;
-
-        private string EncodingName
-        {
-            get
-            {
-                StreamReader rdr = NextBlk.Target as StreamReader;
-                return (rdr == null ? "raw-bytes" : rdr.CurrentEncoding.BodyName);
-            }
-        }
-
-        public BuildBuffer(Stream stream)
-        {
-            FileStream fStrm = (stream as FileStream);
-            if (fStrm != null) FileName = fStrm.Name;
-            NextBlk = BlockReaderFactory.Raw(stream);
-        }
-
-#if (!BYTEMODE)
-        public BuildBuffer(Stream stream, int fallbackCodePage)
-        {
-            FileStream fStrm = (stream as FileStream);
-            if (fStrm != null) FileName = fStrm.Name;
-            NextBlk = BlockReaderFactory.Get(stream, fallbackCodePage);
-        }
-#endif
-
-        /// <summary>
-        /// Marks a conservative lower bound for the buffer,
-        /// allowing space to be reclaimed.  If an application 
-        /// needs to call GetString at arbitrary past locations 
-        /// in the input stream, Mark() is not called.
-        /// </summary>
-        public override void Mark() { data.Mark(bPos - 2); }
-
-        public override int Pos
-        {
-            get { return bPos; }
-            set { bPos = value; }
-        }
-
-
-        /// <summary>
-        /// Read returns the ordinal number of the next char, or 
-        /// EOF (-1) for an end of stream.  Note that the next
-        /// code point may require *two* calls of Read().
-        /// </summary>
-        /// <returns></returns>
-        public override int Read()
-        {
-            //
-            //  Characters at positions 
-            //  [data.offset, data.offset + data.bldr.Length)
-            //  are available in data.bldr.
-            //
-            if (bPos < data.MaxIndex)
-            {
-                // ch0 cannot be EOF
-                return (int)data[bPos++];
-            }
-            else // Read from underlying stream
-            {
-                // Experimental code, blocks of page size
-                char[] chrs = new char[4096];
-                int count = NextBlk(chrs, 0, 4096);
-                if (count == 0)
-                    return EndOfFile;
-                else
-                {
-                    data.Append(chrs, count);
-                    return (int)data[bPos++];
-                }
-            }
-        }
-
-        public override string GetString(int begin, int limit)
-        {
-            return data.GetString(begin, limit);
-        }
-
-        public override string ToString()
-        {
-            return "StringBuilder buffer, encoding: " + this.EncodingName;
-        }
-    }
-
-    // =============== End ScanBuff-derived classes ==================
-
-    internal delegate int BlockReader(char[] block, int index, int number);
-
-    // A delegate factory, serving up a delegate that
-    // reads a block of characters from the underlying
-    // encoded stream, via a StreamReader object.
-    //
-    internal static class BlockReaderFactory
-    {
-        public static BlockReader Raw(Stream stream)
-        {
-            return delegate(char[] block, int index, int number)
-            {
-                byte[] b = new byte[number];
-                int count = stream.Read(b, 0, number);
-                int i = 0;
-                int j = index;
-                for (; i < count; i++, j++)
-                    block[j] = (char)b[i];
-                return count;
-            };
-        }
-
-#if (!BYTEMODE)
-        public static BlockReader Get(Stream stream, int fallbackCodePage)
-        {
-            Encoding encoding;
-            int preamble = Preamble(stream);
-
-            if (preamble != 0)  // There is a valid BOM here!
-                encoding = Encoding.GetEncoding(preamble);
-            else if (fallbackCodePage == -1) // Fallback is "raw" bytes
-                return Raw(stream);
-            else if (fallbackCodePage != -2) // Anything but "guess"
-                encoding = Encoding.GetEncoding(fallbackCodePage);
-            else // This is the "guess" option
-            {
-                int guess = new Guesser(stream).GuessCodePage();
-                stream.Seek(0, SeekOrigin.Begin);
-                if (guess == -1) // ==> this is a 7-bit file
-                    encoding = Encoding.ASCII;
-                else if (guess == 65001)
-                    encoding = Encoding.UTF8;
-                else             // ==> use the machine default
-                    encoding = Encoding.Default;
-            }
-            StreamReader reader = new StreamReader(stream, encoding);
-            return reader.Read;
-        }
-
-        static int Preamble(Stream stream)
-        {
-            int b0 = stream.ReadByte();
-            int b1 = stream.ReadByte();
-
-            if (b0 == 0xfe && b1 == 0xff)
-                return 1201; // UTF16BE
-            if (b0 == 0xff && b1 == 0xfe)
-                return 1200; // UTF16LE
-
-            int b2 = stream.ReadByte();
-            if (b0 == 0xef && b1 == 0xbb && b2 == 0xbf)
-                return 65001; // UTF8
-            //
-            // There is no unicode preamble, so we
-            // return denoter for the machine default.
-            //
-            stream.Seek(0, SeekOrigin.Begin);
-            return 0;
-        }
-#endif // !BYTEMODE
-    }
-#endif // !NOFILES
-    #endregion Buffer classes
-
-    // ==============================================================
-    // ============      class CodePageHandling         =============
-    // ==============================================================
-#if (!NOFILES)
-    public static class CodePageHandling
-    {
-        public static int GetCodePage(string option)
-        {
-            string command = option.ToUpperInvariant();
-            if (command.StartsWith("CodePage:", StringComparison.OrdinalIgnoreCase))
-                command = command.Substring(9);
-            try
-            {
-                if (command.Equals("RAW"))
-                    return -1;
-                else if (command.Equals("GUESS"))
-                    return -2;
-                else if (command.Equals("DEFAULT"))
-                    return 0;
-                else if (char.IsDigit(command[0]))
-                    return int.Parse(command, CultureInfo.InvariantCulture);
-                else
-                {
-                    Encoding enc = Encoding.GetEncoding(command);
-                    return enc.CodePage;
-                }
-            }
-            catch (FormatException)
-            {
-                Console.Error.WriteLine(
-                    "Invalid format \"{0}\", using machine default", option);
-            }
-            catch (ArgumentException)
-            {
-                Console.Error.WriteLine(
-                    "Unknown code page \"{0}\", using machine default", option);
-            }
-            return 0;
-        }
-    }
-#region guesser
-#if (!BYTEMODE)
-    // ==============================================================
-    // ============          Encoding Guesser           =============
-    // ==============================================================
-
-    /// <summary>
-    /// This class provides a simple finite state automaton that
-    /// scans the file looking for (1) valid UTF-8 byte patterns,
-    /// (2) bytes >= 0x80 which are not part of a UTF-8 sequence.
-    /// The method then guesses whether it is UTF-8 or maybe some 
-    /// local machine default encoding.  This works well for the
-    /// various Latin encodings.
-    /// </summary>
-    internal class Guesser
-    {
-        ScanBuff buffer;
-
-        public int GuessCodePage() { return Scan(); }
-
-        const int maxAccept = 10;
-        const int initial = 0;
-        const int eofNum = 0;
-        const int goStart = -1;
-        const int INITIAL = 0;
-        const int EndToken = 0;
-
-        #region user code
-        /* 
-         *  Reads the bytes of a file to determine if it is 
-         *  UTF-8 or a single-byte code page file.
-         */
-        public long utfX;
-        public long uppr;
-        #endregion user code
-
-        int state;
-        int currentStart = startState[0];
-        int code;
-
-        #region ScannerTables
-        static int[] startState = new int[] { 11, 0 };
-
-        #region CharacterMap
-        static sbyte[] map = new sbyte[256] {
-/*     '\0' */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-/*   '\x10' */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-/*   '\x20' */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-/*      '0' */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-/*      '@' */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-/*      'P' */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-/*      '`' */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-/*      'p' */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-/*   '\x80' */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 
-/*   '\x90' */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 
-/*   '\xA0' */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 
-/*   '\xB0' */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 
-/*   '\xC0' */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
-/*   '\xD0' */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
-/*   '\xE0' */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 
-/*   '\xF0' */ 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5 };
-        #endregion
-
-        static sbyte[][] nextState = new sbyte[][] {
-            new sbyte[] {0, 0, 0, 0, 0, 0},
-            new sbyte[] {-1, -1, 10, -1, -1, -1},
-            new sbyte[] {-1, -1, -1, -1, -1, -1},
-            new sbyte[] {-1, -1, 8, -1, -1, -1},
-            new sbyte[] {-1, -1, 5, -1, -1, -1},
-            new sbyte[] {-1, -1, 6, -1, -1, -1},
-            new sbyte[] {-1, -1, 7, -1, -1, -1},
-            null,
-            new sbyte[] {-1, -1, 9, -1, -1, -1},
-            null,
-            null,
-            new sbyte[] {-1, 1, 2, 3, 4, 2}
-        };
-
-
-        [SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")]
-        // Reason for suppression: cannot have self-reference in array initializer.
-        static Guesser()
-        {
-            nextState[7] = nextState[2];
-            nextState[9] = nextState[2];
-            nextState[10] = nextState[2];
-        }
-
-        int NextState()
-        {
-            if (code == ScanBuff.EndOfFile)
-                return eofNum;
-            else
-                return nextState[state][map[code]];
-        }
-        #endregion
-
-        public Guesser(System.IO.Stream file) { SetSource(file); }
-
-        public void SetSource(System.IO.Stream source)
-        {
-            this.buffer = new BuildBuffer(source);
-            code = buffer.Read();
-        }
-
-        int Scan()
-        {
-            for (; ; )
-            {
-                int next;
-                state = currentStart;
-                while ((next = NextState()) == goStart)
-                    code = buffer.Read();
-
-                state = next;
-                code = buffer.Read();
-
-                while ((next = NextState()) > eofNum)
-                {
-                    state = next;
-                    code = buffer.Read();
-                }
-                if (state <= maxAccept)
-                {
-                    #region ActionSwitch
-#pragma warning disable 162
-                    switch (state)
-                    {
-                        case eofNum:
-                            switch (currentStart)
-                            {
-                                case 11:
-                                    if (utfX == 0 && uppr == 0) return -1; /* raw ascii */
-                                    else if (uppr * 10 > utfX) return 0;   /* default code page */
-                                    else return 65001;                     /* UTF-8 encoding */
-                                    break;
-                            }
-                            return EndToken;
-                        case 1: // Recognized '{Upper128}',	Shortest string "\xC0"
-                        case 2: // Recognized '{Upper128}',	Shortest string "\x80"
-                        case 3: // Recognized '{Upper128}',	Shortest string "\xE0"
-                        case 4: // Recognized '{Upper128}',	Shortest string "\xF0"
-                            uppr++;
-                            break;
-                        case 5: // Recognized '{Utf8pfx4}{Utf8cont}',	Shortest string "\xF0\x80"
-                            uppr += 2;
-                            break;
-                        case 6: // Recognized '{Utf8pfx4}{Utf8cont}{2}',	Shortest string "\xF0\x80\x80"
-                            uppr += 3;
-                            break;
-                        case 7: // Recognized '{Utf8pfx4}{Utf8cont}{3}',	Shortest string "\xF0\x80\x80\x80"
-                            utfX += 3;
-                            break;
-                        case 8: // Recognized '{Utf8pfx3}{Utf8cont}',	Shortest string "\xE0\x80"
-                            uppr += 2;
-                            break;
-                        case 9: // Recognized '{Utf8pfx3}{Utf8cont}{2}',	Shortest string "\xE0\x80\x80"
-                            utfX += 2;
-                            break;
-                        case 10: // Recognized '{Utf8pfx2}{Utf8cont}',	Shortest string "\xC0\x80"
-                            utfX++;
-                            break;
-                        default:
-                            break;
-                    }
-#pragma warning restore 162
-                    #endregion
-                }
-            }
-        }
-    } // end class Guesser
-    
-#endif // !BYTEMODE
-#endregion
-#endif // !NOFILES
-
-// End of code copied from embedded resource
-}
@@ -1,19 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System.Numerics;
-
-public interface IArithmeticExpression {
-   IArithmeticExpression Add(IArithmeticExpression factor) => new Sum(this, factor);
-   IArithmeticExpression Divide(IArithmeticExpression other) => new Quotient(this, other);
-   IArithmeticExpression Multiply(IArithmeticExpression other) => new Product(this, other);
-   IArithmeticExpression Subtract(IArithmeticExpression other) => new Difference(this, other);
-   IArithmeticExpression Negate() => new AdditiveInverse(this);
-   object? Evaluate(IDictionary<string, object?> env);
-}
-
-public interface IArithmeticExpression<T> : IArithmeticExpression where T : INumber<T> {
-   new T Evaluate(IDictionary<string, object?> env);
-
-   object? IArithmeticExpression.Evaluate(IDictionary<string, object?> env) =>
-      Evaluate(env);
-}
@@ -1,7 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-public interface IArithmeticProgram {
-   IEnumerable<string> OutputIdentifiers { get; }
-
-   IDictionary<string, object?> Evaluate(IDictionary<string, object?> env);
-}
@@ -1,11 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-class IntegerConstant : IArithmeticExpression<int> {
-   readonly int value;
-
-   public IntegerConstant(int value) =>
-      this.value = value;
-
-   public int Evaluate(IDictionary<string, object?> env) =>
-      value;
-}
@@ -1,45 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System.Numerics;
-
-class Product : IArithmeticExpression<double> {
-   readonly IArithmeticExpression left;
-   readonly IArithmeticExpression right;
-
-   public Product(IArithmeticExpression left, IArithmeticExpression right) {
-      this.left = left;
-      this.right = right;
-   }
-
-   public static Product<T, T, T> Create<T>(
-      IArithmeticExpression<T> left, IArithmeticExpression<T> right)
-      where T : INumber<T>, IMultiplyOperators<T, T, T> =>
-      new(left, right);
-
-   public double Evaluate(IDictionary<string, object?> env) =>
-      evaluateArg(left, nameof(left), env) * evaluateArg(right, nameof(right), env);
-
-   static double evaluateArg(
-      IArithmeticExpression expr, string name, IDictionary<string, object?> env) {
-      var obj = expr.Evaluate(env);
-      return ConvertUtils.try_convert(expr.Evaluate(env), out double dbl) ? dbl :
-         throw new Exception(
-            $"Invalid Product. {name} is of type {obj?.GetType()} (expected {typeof(double)})");
-   }
-}
-
-class Product<TLeft, TRight, TResult> : IArithmeticExpression<TResult>
-   where TLeft : INumber<TLeft>, IMultiplyOperators<TLeft, TRight, TResult>
-   where TRight : INumber<TRight>
-   where TResult : INumber<TResult> {
-   readonly IArithmeticExpression<TLeft> left;
-   readonly IArithmeticExpression<TRight> right;
-
-   public Product(IArithmeticExpression<TLeft> left, IArithmeticExpression<TRight> right) {
-      this.left = left;
-      this.right = right;
-   }
-
-   public TResult Evaluate(IDictionary<string, object?> env) =>
-      left.Evaluate(env) * right.Evaluate(env);
-}
@@ -1,45 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System.Numerics;
-
-class Quotient : IArithmeticExpression<double> {
-   readonly IArithmeticExpression left;
-   readonly IArithmeticExpression right;
-
-   public Quotient(IArithmeticExpression left, IArithmeticExpression right) {
-      this.left = left;
-      this.right = right;
-   }
-
-   public static Quotient<T, T, T> Create<T>(
-      IArithmeticExpression<T> left, IArithmeticExpression<T> right)
-      where T : INumber<T>, IDivisionOperators<T, T, T> =>
-      new(left, right);
-
-   public double Evaluate(IDictionary<string, object?> env) =>
-      evaluateArg(left, nameof(left), env) / evaluateArg(right, nameof(right), env);
-
-   static double evaluateArg(
-      IArithmeticExpression expr, string name, IDictionary<string, object?> env) {
-      var obj = expr.Evaluate(env);
-      return ConvertUtils.try_convert(expr.Evaluate(env), out double dbl) ? dbl :
-         throw new Exception(
-            $"Invalid Quotient. {name} is of type {obj?.GetType()} (expected {typeof(double)})");
-   }
-}
-
-class Quotient<TLeft, TRight, TResult> : IArithmeticExpression<TResult>
-   where TLeft : INumber<TLeft>, IDivisionOperators<TLeft, TRight, TResult>
-   where TRight : INumber<TRight>
-   where TResult : INumber<TResult> {
-   readonly IArithmeticExpression<TLeft> left;
-   readonly IArithmeticExpression<TRight> right;
-
-   public Quotient(IArithmeticExpression<TLeft> left, IArithmeticExpression<TRight> right) {
-      this.left = left;
-      this.right = right;
-   }
-
-   public TResult Evaluate(IDictionary<string, object?> env) =>
-      left.Evaluate(env) / right.Evaluate(env);
-}
@@ -1,11 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-class RealConstant : IArithmeticExpression<double> {
-   readonly double value;
-
-   public RealConstant(double value) =>
-      this.value = value;
-
-   public double Evaluate(IDictionary<string, object?> env) =>
-      value;
-}
@@ -1,884 +0,0 @@
-// ==============================================================
-// <auto-generated>
-// This code automatically produced from an embedded resource.
-// Do not edit this file, or it will become incompatible with 
-// the specification from which it was generated.
-// </auto-generated>
-// ==============================================================
-
-// Gardens Point Parser Generator
-// Copyright (c) Wayne Kelly, QUT 2005-2010
-// (see accompanying GPPGcopyright.rtf)
-
-using System;
-using System.Text;
-using System.Globalization;
-using System.Collections.Generic;
-using System.Runtime.Serialization;
-using System.Diagnostics.CodeAnalysis;
-
-namespace QUT.Gppg {
-    /// <summary>
-    /// Abstract class for GPPG shift-reduce parsers.
-    /// Parsers generated by GPPG derive from this base
-    /// class, overriding the abstract Initialize() and
-    /// DoAction() methods.
-    /// </summary>
-    /// <typeparam name="TValue">Semantic value type</typeparam>
-    /// <typeparam name="TSpan">Location type</typeparam>
-#if EXPORT_GPPG
-    public abstract class ShiftReduceParser<TValue, TSpan>
-#else
-    internal abstract class ShiftReduceParser<TValue, TSpan>
-#endif
- where TSpan : IMerge<TSpan>, new() {
-        private AbstractScanner<TValue, TSpan> scanner;
-        /// <summary>
-        /// The abstract scanner for this parser.
-        /// </summary>
-        protected AbstractScanner<TValue, TSpan> Scanner {
-            get { return scanner; }
-            set { scanner = value; }
-        }
-
-        /// <summary>
-        /// Constructor for base class
-        /// </summary>
-        /// <param name="scanner">Scanner instance for this parser</param>
-        protected ShiftReduceParser( AbstractScanner<TValue, TSpan> scanner ) {
-            this.scanner = scanner;
-        }
-
-        // ==============================================================
-        //                    TECHNICAL EXPLANATION.
-        //   Why the next two fields are not exposed via properties.
-        // ==============================================================
-        // These fields are of the generic parameter types, and are
-        // frequently instantiated as struct types in derived classes.
-        // Semantic actions are defined in the derived classes and refer
-        // to instance fields of these structs.  In such cases the code
-        // "get_CurrentSemanticValue().myField = blah;" will fail since
-        // the getter pushes the value of the field, not the reference.
-        // So, in the presence of properties, gppg would need to encode
-        // such field accesses as ... 
-        //  "tmp = get_CurrentSemanticValue(); // Fetch value
-        //   tmp.myField = blah;               // update
-        //   set_CurrentSemanticValue(tmp); "  // Write update back.
-        // There is no issue if TValue is restricted to be a ref type.
-        // The same explanation applies to scanner.yylval.
-        // ==============================================================
-        /// <summary>
-        /// The current value of the "$$" symbolic variable in the parser
-        /// </summary>
-        [SuppressMessage( "Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields" )]
-        protected TValue CurrentSemanticValue;
-
-        /// <summary>
-        /// The current value of the "@$" symbolic variable in the parser
-        /// </summary>
-        [SuppressMessage( "Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields" )]
-        protected TSpan CurrentLocationSpan;
-        protected int NextToken;
-
-        private TSpan LastSpan;
-        private State FsaState;
-        private bool recovering;
-        private int tokensSinceLastError;
-
-        private PushdownPrefixState<State> StateStack = new PushdownPrefixState<State>();
-        private PushdownPrefixState<TValue> valueStack = new PushdownPrefixState<TValue>();
-        private PushdownPrefixState<TSpan> locationStack = new PushdownPrefixState<TSpan>();
-
-        /// <summary>
-        /// The stack of semantic value (YYSTYPE) values.
-        /// </summary>
-        protected PushdownPrefixState<TValue> ValueStack { get { return valueStack; } }
-
-        /// <summary>
-        /// The stack of location value (YYLTYPE) varlues.
-        /// </summary>
-        protected PushdownPrefixState<TSpan> LocationStack { get { return locationStack; } }
-
-        private int errorToken;
-        private int endOfFileToken;
-        private string[] nonTerminals;
-        private State[] states;
-        private Rule[] rules;
-
-        /// <summary>
-        /// Initialization method to allow derived classes
-        /// to insert the rule list into this base class.
-        /// </summary>
-        /// <param name="rules">The array of Rule objects</param>
-        protected void InitRules( Rule[] rules ) { this.rules = rules; }
-
-        /// <summary>
-        /// Initialization method to allow derived classes to
-        /// insert the states table into this base class.
-        /// </summary>
-        /// <param name="states">The pre-initialized states table</param>
-        protected void InitStates( State[] states ) { this.states = states; }
-
-        /// <summary>
-        /// OBSOLETE FOR VERSION 1.4.0
-        /// </summary>
-        /// <param name="size"></param>
-        protected void InitStateTable( int size ) { states = new State[size]; }
-
-        /// <summary>
-        /// Initialization method to allow derived classes
-        /// to insert the special value for the error and EOF tokens.
-        /// </summary>
-        /// <param name="err">The error state ordinal</param>
-        /// <param name="end">The EOF stat ordinal</param>
-        protected void InitSpecialTokens( int err, int end ) {
-            errorToken = err;
-            endOfFileToken = end;
-        }
-
-        /// <summary>
-        /// Initialization method to allow derived classes to
-        /// insert the non-terminal symbol names into this base class.
-        /// </summary>
-        /// <param name="names">Non-terminal symbol names</param>
-        protected void InitNonTerminals( string[] names ) { nonTerminals = names; }
-
-        #region YYAbort, YYAccept etcetera.
-        [Serializable]
-        [SuppressMessage( "Microsoft.Design", "CA1064:ExceptionsShouldBePublic" )]
-        // Reason for FxCop message suppression -
-        // This exception cannot escape from the local context
-        private class AcceptException : Exception {
-            internal AcceptException() { }
-            protected AcceptException( SerializationInfo i, StreamingContext c ) : base( i, c ) { }
-        }
-        [Serializable]
-        [SuppressMessage( "Microsoft.Design", "CA1064:ExceptionsShouldBePublic" )]
-        // Reason for FxCop message suppression -
-        // This exception cannot escape from the local context
-        private class AbortException : Exception {
-            internal AbortException() { }
-            protected AbortException( SerializationInfo i, StreamingContext c ) : base( i, c ) { }
-        }
-        [Serializable]
-        [SuppressMessage( "Microsoft.Design", "CA1064:ExceptionsShouldBePublic" )]
-        // Reason for FxCop message suppression -
-        // This exception cannot escape from the local context
-        private class ErrorException : Exception {
-            internal ErrorException() { }
-            protected ErrorException( SerializationInfo i, StreamingContext c ) : base( i, c ) { }
-        }
-
-        // The following methods are only called from within
-        // a semantic action. The thrown exceptions can never
-        // propagate outside the ShiftReduceParser class in 
-        // which they are nested.
-
-        /// <summary>
-        /// Force parser to terminate, returning "true"
-        /// </summary>
-        protected static void YYAccept() { throw new AcceptException(); }
-
-        /// <summary>
-        /// Force parser to terminate, returning "false"
-        /// </summary>
-        protected static void YYAbort() { throw new AbortException(); }
-
-        /// <summary>
-        /// Force parser to terminate, returning
-        /// "false" if error recovery fails.
-        /// </summary>
-        protected static void YYError() { throw new ErrorException(); }
-
-        /// <summary>
-        /// Check if parser in error recovery state.
-        /// </summary>
-        protected bool YYRecovering { get { return recovering; } }
-        #endregion
-
-        /// <summary>
-        /// Abstract base method. ShiftReduceParser calls this
-        /// to initialize the base class data structures.  Concrete
-        /// parser classes must override this method.
-        /// </summary>
-        protected abstract void Initialize();
-
-        /// <summary>
-        /// Main entry point of the Shift-Reduce Parser.
-        /// </summary>
-        /// <returns>True if parse succeeds, else false for
-        /// unrecoverable errors</returns>
-        public bool Parse() {
-            Initialize();	// allow derived classes to instantiate rules, states and nonTerminals
-
-            NextToken = 0;
-            FsaState = states[0];
-
-            StateStack.Push( FsaState );
-            valueStack.Push( CurrentSemanticValue );
-            LocationStack.Push( CurrentLocationSpan );
-
-            while (true) {
-#if TRACE_ACTIONS
-                Console.Error.WriteLine("Entering state {0} ", FsaState.number);
-                DisplayStack();
-#endif
-                int action = FsaState.defaultAction;
-
-                if (FsaState.ParserTable != null) {
-                    if (NextToken == 0) {
-                        // We save the last token span, so that the location span
-                        // of production right hand sides that begin or end with a
-                        // nullable production will be correct.
-                        LastSpan = scanner.yylloc;
-                        NextToken = scanner.yylex();
-#if TRACE_ACTIONS
-                       Console.Error.WriteLine( "Reading: Next token is {0}", TerminalToString( NextToken ) );
-#endif
-                    }
-#if TRACE_ACTIONS
-                    else 
-                        Console.Error.WriteLine( "Next token is still {0}", TerminalToString( NextToken ) );
-#endif
-                    if (FsaState.ParserTable.ContainsKey( NextToken ))
-                        action = FsaState.ParserTable[NextToken];
-                }
-
-                if (action > 0)         // shift
-                {
-                    Shift( action );
-                }
-                else if (action < 0)   // reduce
-                {
-                    try {
-                        Reduce( -action );
-                        if (action == -1)	// accept
-                            return true;
-                    }
-                    catch (AbortException) {
-                            return false;
-                    }
-                    catch (AcceptException) {
-                        return true;
-                    }
-                    catch (ErrorException) {
-                        if (!ErrorRecovery())
-                            return false;
-                        else
-                            throw;  // Rethrow x, preserving information.
-                    }
-                }
-                else if (action == 0 && !ErrorRecovery()) // error
-                    return false;
-            }
-        }
-
-        private void Shift( int stateIndex ) {
-#if TRACE_ACTIONS
-				Console.Error.Write("Shifting token {0}, ", TerminalToString(NextToken));
-#endif
-            FsaState = states[stateIndex];
-
-            valueStack.Push( scanner.yylval );
-            StateStack.Push( FsaState );
-            LocationStack.Push( scanner.yylloc );
-
-            if (recovering) {
-                if (NextToken != errorToken)
-                    tokensSinceLastError++;
-
-                if (tokensSinceLastError > 5)
-                    recovering = false;
-            }
-
-            if (NextToken != endOfFileToken)
-                NextToken = 0;
-        }
-
-        private void Reduce( int ruleNumber ) {
-#if TRACE_ACTIONS
-				DisplayRule(ruleNumber);
-#endif
-            Rule rule = rules[ruleNumber];
-            int rhLen = rule.RightHandSide.Length;
-            //
-            //  Default actions for unit productions.
-            //
-            if (rhLen == 1) {
-                CurrentSemanticValue = valueStack.TopElement();   // Default action: $$ = $1;
-                CurrentLocationSpan = LocationStack.TopElement(); // Default action "@$ = @1;
-            }
-            else if (rhLen == 0) {
-                // Create a new blank value.
-                // Explicit semantic action may mutate this value
-                CurrentSemanticValue = default( TValue );
-                // The location span for an empty production will start with the
-                // beginning of the next lexeme, and end with the finish of the
-                // previous lexeme.  This gives the correct behaviour when this
-                // nonsense value is used in later Merge operations.
-                CurrentLocationSpan = (scanner.yylloc != null && LastSpan != null ?
-                    scanner.yylloc.Merge( LastSpan ) :
-                    default( TSpan ));
-            }
-            else {
-                // Default action: $$ = $1;
-                CurrentSemanticValue = valueStack[LocationStack.Depth - rhLen];
-                //  Default action "@$ = @1.Merge(@N)" for location info.
-                TSpan at1 = LocationStack[LocationStack.Depth - rhLen];
-                TSpan atN = LocationStack[LocationStack.Depth - 1];
-                CurrentLocationSpan =
-                    ((at1 != null && atN != null) ? at1.Merge( atN ) : default( TSpan ));
-            }
-
-            DoAction( ruleNumber );
-
-            for (int i = 0; i < rule.RightHandSide.Length; i++) {
-                StateStack.Pop();
-                valueStack.Pop();
-                LocationStack.Pop();
-            }
-            FsaState = StateStack.TopElement();
-
-            if (FsaState.Goto.ContainsKey( rule.LeftHandSide ))
-                FsaState = states[FsaState.Goto[rule.LeftHandSide]];
-
-            StateStack.Push( FsaState );
-            valueStack.Push( CurrentSemanticValue );
-            LocationStack.Push( CurrentLocationSpan );
-        }
-
-        /// <summary>
-        /// Execute the selected action from array.
-        /// Must be overriden in derived classes.
-        /// </summary>
-        /// <param name="actionNumber">Index of the action to perform</param>
-        protected abstract void DoAction( int actionNumber );
-
-        private bool ErrorRecovery() {
-            bool discard;
-
-            if (!recovering) // if not recovering from previous error
-                ReportError();
-
-            if (!FindErrorRecoveryState())
-                return false;
-            //
-            //  The interim fix for the "looping in error recovery"
-            //  artifact involved moving the setting of the recovering 
-            //  bool until after invalid tokens have been discarded.
-            //
-            ShiftErrorToken();
-            discard = DiscardInvalidTokens();
-            recovering = true;
-            tokensSinceLastError = 0;
-            return discard;
-        }
-
-        private void ReportError() {
-            StringBuilder errorMsg = new StringBuilder();
-            errorMsg.AppendFormat( "Syntax error, unexpected {0}", TerminalToString( NextToken ) );
-
-            if (FsaState.ParserTable.Count < 7) {
-                bool first = true;
-                foreach (int terminal in FsaState.ParserTable.Keys) {
-                    if (first)
-                        errorMsg.Append( ", expecting " );
-                    else
-                        errorMsg.Append( ", or " );
-
-                    errorMsg.Append( TerminalToString( terminal ) );
-                    first = false;
-                }
-            }
-            scanner.yyerror( errorMsg.ToString() );
-        }
-
-        private void ShiftErrorToken() {
-            int old_next = NextToken;
-            NextToken = errorToken;
-
-            Shift( FsaState.ParserTable[NextToken] );
-
-#if TRACE_ACTIONS
-				Console.Error.WriteLine("Entering state {0} ", FsaState.number);
-#endif
-            NextToken = old_next;
-        }
-
-        private bool FindErrorRecoveryState() {
-            while (true)    // pop states until one found that accepts error token
-            {
-                if (FsaState.ParserTable != null &&
-                    FsaState.ParserTable.ContainsKey( errorToken ) &&
-                    FsaState.ParserTable[errorToken] > 0) // shift
-                    return true;
-
-#if TRACE_ACTIONS
-					Console.Error.WriteLine("Error: popping state {0}", StateStack.TopElement().number);
-#endif
-                StateStack.Pop();
-                valueStack.Pop();
-                LocationStack.Pop();
-
-#if TRACE_ACTIONS
-			    DisplayStack();
-#endif
-                if (StateStack.IsEmpty()) {
-#if TRACE_ACTIONS
-                        Console.Error.WriteLine("Aborting: didn't find a state that accepts error token");
-#endif
-                    return false;
-                }
-                else
-                    FsaState = StateStack.TopElement();
-            }
-        }
-
-        private bool DiscardInvalidTokens() {
-
-            int action = FsaState.defaultAction;
-
-            if (FsaState.ParserTable != null) {
-                // Discard tokens until find one that works ...
-                while (true) {
-                    if (NextToken == 0) {
-#if TRACE_ACTIONS
-                            Console.Error.Write("Reading a token: ");
-#endif
-                        NextToken = scanner.yylex();
-                    }
-#if TRACE_ACTIONS
-                        Console.Error.WriteLine("Next token is {0}", TerminalToString(NextToken));
-#endif
-                    if (NextToken == endOfFileToken)
-                        return false;
-
-                    if (FsaState.ParserTable.ContainsKey( NextToken ))
-                        action = FsaState.ParserTable[NextToken];
-
-                    if (action != 0)
-                        return true;
-                    else {
-#if TRACE_ACTIONS
-                            Console.Error.WriteLine("Error: Discarding {0}", TerminalToString(NextToken));
-#endif
-                        NextToken = 0;
-                    }
-                }
-            }
-            else if (recovering && tokensSinceLastError == 0) {
-                // 
-                //  Boolean recovering is not set until after the first
-                //  error token has been shifted.  Thus if we get back 
-                //  here with recovering set and no tokens read we are
-                //  looping on the same error recovery action.  This 
-                //  happens if current_state.ParserTable is null because
-                //  the state has an LR(0) reduction, but not all
-                //  lookahead tokens are valid.  This only occurs for
-                //  error productions that *end* on "error".
-                //
-                //  This action discards tokens one at a time until
-                //  the looping stops.  Another attack would be to always
-                //  use the LALR(1) table if a production ends on "error"
-                //
-#if TRACE_ACTIONS
-                    Console.Error.WriteLine("Error: panic discard of {0}", TerminalToString(NextToken));
-#endif
-                if (NextToken == endOfFileToken)
-                    return false;
-                NextToken = 0;
-                return true;
-            }
-            else
-                return true;
-        }
-
-        /// <summary>
-        /// Traditional YACC method.  Discards the next input token.
-        /// </summary>
-        [SuppressMessage( "Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "yyclearin" )]
-        [SuppressMessage( "Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "yyclearin" )]
-        // Reason for FxCop message suppression -
-        // This is a traditional name for YACC-like functionality
-        protected void yyclearin() { NextToken = 0; }
-
-        /// <summary>
-        /// Tradional YACC method. Clear the "recovering" flag.
-        /// </summary>
-        [SuppressMessage( "Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "yyerrok" )]
-        [SuppressMessage( "Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "yyerrok" )]
-        // Reason for FxCop message suppression -
-        // This is a traditional name for YACC-like functionality
-        protected void yyerrok() { recovering = false; }
-
-        /// <summary>
-        /// OBSOLETE FOR VERSION 1.4.0
-        /// Method used by derived types to insert new
-        /// state instances in the "states" array.
-        /// </summary>
-        /// <param name="stateNumber">index of the state</param>
-        /// <param name="state">data for the state</param>
-        protected void AddState( int stateNumber, State state ) {
-            states[stateNumber] = state;
-            state.number = stateNumber;
-        }
-
-        private void DisplayStack() {
-            Console.Error.Write( "State stack is now:" );
-            for (int i = 0; i < StateStack.Depth; i++)
-                Console.Error.Write( " {0}", StateStack[i].number );
-            Console.Error.WriteLine();
-        }
-
-        private void DisplayRule( int ruleNumber ) {
-            Console.Error.Write( "Reducing stack by rule {0}, ", ruleNumber );
-            DisplayProduction( rules[ruleNumber] );
-        }
-
-        private void DisplayProduction( Rule rule ) {
-            if (rule.RightHandSide.Length == 0)
-                Console.Error.Write( "/* empty */ " );
-            else
-                foreach (int symbol in rule.RightHandSide)
-                    Console.Error.Write( "{0} ", SymbolToString( symbol ) );
-
-            Console.Error.WriteLine( "-> {0}", SymbolToString( rule.LeftHandSide ) );
-        }
-
-        /// <summary>
-        /// Abstract state class naming terminal symbols.
-        /// This is overridden by derived classes with the
-        /// name (or alias) to be used in error messages.
-        /// </summary>
-        /// <param name="terminal">The terminal ordinal</param>
-        /// <returns></returns>
-        protected abstract string TerminalToString( int terminal );
-
-        private string SymbolToString( int symbol ) {
-            if (symbol < 0)
-                return nonTerminals[-symbol - 1];
-            else
-                return TerminalToString( symbol );
-        }
-
-        /// <summary>
-        /// Return text representation of argument character
-        /// </summary>
-        /// <param name="input">The character to convert</param>
-        /// <returns>String representation of the character</returns>
-        protected static string CharToString( char input ) {
-            switch (input) {
-                case '\a': return @"'\a'";
-                case '\b': return @"'\b'";
-                case '\f': return @"'\f'";
-                case '\n': return @"'\n'";
-                case '\r': return @"'\r'";
-                case '\t': return @"'\t'";
-                case '\v': return @"'\v'";
-                case '\0': return @"'\0'";
-                default: return string.Format( CultureInfo.InvariantCulture, "'{0}'", input );
-            }
-        }
-    }
-
-    /// <summary>
-    /// Classes implementing this interface must supply a
-    /// method that merges two location objects to return
-    /// a new object of the same type.
-    /// GPPG-generated parsers have the default location
-    /// action equivalent to "@$ = @1.Merge(@N);" where N
-    /// is the right-hand-side length of the production.
-    /// </summary>
-    /// <typeparam name="TSpan">The Location type</typeparam>
-#if EXPORT_GPPG
-    public interface IMerge<TSpan>
-#else
-    internal interface IMerge<TSpan>
-#endif
- {
-        /// <summary>
-        /// Interface method that creates a location object from
-        /// the current and last object.  Typically used to create
-        /// a location object extending from the start of the @1
-        /// object to the end of the @N object.
-        /// </summary>
-        /// <param name="last">The lexically last object to merge</param>
-        /// <returns>The merged location object</returns>
-        TSpan Merge( TSpan last );
-    }
-
-    /// <summary>
-    /// This is the default class that carries location
-    /// information from the scanner to the parser.
-    /// If you don't declare "%YYLTYPE Foo" the parser
-    /// will expect to deal with this type.
-    /// </summary>
-#if EXPORT_GPPG
-    public class LexLocation : IMerge<LexLocation>
-#else
-    [SuppressMessage( "Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses" )]
-    internal class LexLocation : IMerge<LexLocation>
-#endif
- {
-        private int startLine;   // start line
-        private int startColumn; // start column
-        private int endLine;     // end line
-        private int endColumn;   // end column
-
-        /// <summary>
-        /// The line at which the text span starts.
-        /// </summary>
-        public int StartLine { get { return startLine; } }
-
-        /// <summary>
-        /// The column at which the text span starts.
-        /// </summary>
-        public int StartColumn { get { return startColumn; } }
-
-        /// <summary>
-        /// The line on which the text span ends.
-        /// </summary>
-        public int EndLine { get { return endLine; } }
-
-        /// <summary>
-        /// The column of the first character
-        /// beyond the end of the text span.
-        /// </summary>
-        public int EndColumn { get { return endColumn; } }
-
-        /// <summary>
-        /// Default no-arg constructor.
-        /// </summary>
-        public LexLocation() { }
-
-        /// <summary>
-        /// Constructor for text-span with given start and end.
-        /// </summary>
-        /// <param name="sl">start line</param>
-        /// <param name="sc">start column</param>
-        /// <param name="el">end line </param>
-        /// <param name="ec">end column</param>
-        public LexLocation( int sl, int sc, int el, int ec ) { startLine = sl; startColumn = sc; endLine = el; endColumn = ec; }
-
-        /// <summary>
-        /// Create a text location which spans from the 
-        /// start of "this" to the end of the argument "last"
-        /// </summary>
-        /// <param name="last">The last location in the result span</param>
-        /// <returns>The merged span</returns>
-        public LexLocation Merge( LexLocation last ) { return new LexLocation( this.startLine, this.startColumn, last.endLine, last.endColumn ); }
-    }
-
-    /// <summary>
-    /// Abstract scanner class that GPPG expects its scanners to 
-    /// extend.
-    /// </summary>
-    /// <typeparam name="TValue">Semantic value type YYSTYPE</typeparam>
-    /// <typeparam name="TSpan">Source location type YYLTYPE</typeparam>
-#if EXPORT_GPPG
-    public abstract class AbstractScanner<TValue, TSpan>
-#else
-    internal abstract class AbstractScanner<TValue, TSpan>
-#endif
- where TSpan : IMerge<TSpan> {
-        /// <summary>
-        /// Lexical value optionally set by the scanner. The value
-        /// is of the %YYSTYPE type declared in the parser spec.
-        /// </summary>
-        [SuppressMessage( "Microsoft.Design", "CA1051:DoNotDeclareVisibleInstanceFields" )]
-        [SuppressMessage( "Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "yylval" )]
-        [SuppressMessage( "Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "yylval" )]
-        // Reason for FxCop message suppression -
-        // This is a traditional name for YACC-like functionality
-        // A field must be declared for this value of parametric type,
-        // since it may be instantiated by a value struct.  If it were 
-        // implemented as a property, machine generated code in derived
-        // types would not be able to select on the returned value.
-#pragma warning disable 649
-        public TValue yylval;                     // Lexical value: set by scanner
-#pragma warning restore 649
-
-        /// <summary>
-        /// Current scanner location property. The value is of the
-        /// type declared by %YYLTYPE in the parser specification.
-        /// </summary>
-        [SuppressMessage( "Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "yylloc" )]
-        [SuppressMessage( "Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "yylloc" )]
-        // Reason for FxCop message suppression -
-        // This is a traditional name for YACC-like functionality
-        public virtual TSpan yylloc {
-            get { return default( TSpan ); }       // Empty implementation allowing
-            set { /* skip */ }                   // yylloc to be ignored entirely.
-        }
-
-        /// <summary>
-        /// Main call point for LEX-like scanners.  Returns an int
-        /// corresponding to the token recognized by the scanner.
-        /// </summary>
-        /// <returns>An int corresponding to the token</returns>
-        [SuppressMessage( "Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "yylex" )]
-        [SuppressMessage( "Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "yylex" )]
-        // Reason for FxCop message suppression -
-        // This is a traditional name for YACC-like functionality
-        public abstract int yylex();
-
-        /// <summary>
-        /// Traditional error reporting provided by LEX-like scanners
-        /// to their YACC-like clients.
-        /// </summary>
-        /// <param name="format">Message format string</param>
-        /// <param name="args">Optional array of args</param>
-        [SuppressMessage( "Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "yyerror" )]
-        [SuppressMessage( "Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "yyerror" )]
-        // Reason for FxCop message suppression -
-        // This is a traditional name for YACC-like functionality
-        public virtual void yyerror( string format, params object[] args ) { }
-    }
-
-    /// <summary>
-    /// Encapsulated state for the parser.
-    /// Opaque to users, visible to the tool-generated code.
-    /// </summary>
-#if EXPORT_GPPG
-    public class State
-    {
-        /// <summary>
-        /// The number of states in the automaton.
-        /// </summary>
-        public int number;
-#else
-    internal class State {
-        /// <summary>
-        /// The index of this state in the states array.
-        /// </summary>
-        internal int number;
-#endif
-        internal Dictionary<int, int> ParserTable;   // Terminal -> ParseAction
-        internal Dictionary<int, int> Goto;          // NonTerminal -> State;
-        internal int defaultAction; // = 0;		     // ParseAction
-
-        /// <summary>
-        /// State transition data for this state. Pairs of elements of the 
-        /// goto array associate symbol ordinals with next state indices.
-        /// The actions array is passed to another constructor. 
-        /// </summary>
-        /// <param name="actions">The action list</param>c
-        /// <param name="goToList">Next state data</param>
-        public State( int[] actions, int[] goToList )
-            : this( actions ) {
-            Goto = new Dictionary<int, int>();
-            for (int i = 0; i < goToList.Length; i += 2)
-                Goto.Add( goToList[i], goToList[i + 1] );
-        }
-
-        /// <summary>
-        /// Action data for this state. Pairs of elements of the 
-        /// action array associate action ordinals with each of
-        /// those symbols that have actions in the current state.
-        /// </summary>
-        /// <param name="actions">The action array</param>
-        public State( int[] actions ) {
-            ParserTable = new Dictionary<int, int>();
-            for (int i = 0; i < actions.Length; i += 2)
-                ParserTable.Add( actions[i], actions[i + 1] );
-        }
-
-        /// <summary>
-        /// Set the default action for this state.
-        /// </summary>
-        /// <param name="defaultAction">Ordinal of the default action</param>
-        public State( int defaultAction ) {
-            this.defaultAction = defaultAction;
-        }
-
-        /// <summary>
-        /// Set the default action and the state transition table.
-        /// </summary>
-        /// <param name="defaultAction">The default action</param>
-        /// <param name="goToList">Transitions from this state</param>
-        public State( int defaultAction, int[] goToList )
-            : this( defaultAction ) {
-            Goto = new Dictionary<int, int>();
-            for (int i = 0; i < goToList.Length; i += 2)
-                Goto.Add( goToList[i], goToList[i + 1] );
-        }
-    }
-
-    /// <summary>
-    /// Rule representation at runtime.
-    /// </summary>
-#if EXPORT_GPPG
-    public class Rule
-#else
-    internal class Rule
-#endif
- {
-        internal int LeftHandSide; // symbol
-        internal int[] RightHandSide; // symbols
-
-        /// <summary>
-        /// Rule constructor.  This holds the ordinal of
-        /// the left hand side symbol, and the list of
-        /// right hand side symbols, in lexical order.
-        /// </summary>
-        /// <param name="left">The LHS non-terminal</param>
-        /// <param name="right">The RHS symbols, in lexical order</param>
-        public Rule( int left, int[] right ) {
-            this.LeftHandSide = left;
-            this.RightHandSide = right;
-        }
-    }
-
-    /// <summary>
-    /// Stack utility for the shift-reduce parser.
-    /// GPPG parsers have three instances:
-    /// (1) The parser state stack, T = QUT.Gppg.State,
-    /// (2) The semantic value stack, T = TValue,
-    /// (3) The location stack, T = TSpan.
-    /// </summary>
-    /// <typeparam name="T"></typeparam>
-#if EXPORT_GPPG
-    public class PushdownPrefixState<T>
-#else
-    internal class PushdownPrefixState<T>
-#endif
- {
-        //  Note that we cannot use the BCL Stack<T> class
-        //  here as derived types need to index into stacks.
-        //
-        private T[] array = new T[8];
-        private int tos = 0;
-
-        /// <summary>
-        /// Indexer for values of the stack below the top.
-        /// </summary>
-        /// <param name="index">index of the element, starting from the bottom</param>
-        /// <returns>the selected element</returns>
-        public T this[int index] { get { return array[index]; } }
-
-        /// <summary>
-        /// The current depth of the stack.
-        /// </summary>
-        public int Depth { get { return tos; } }
-
-        internal void Push( T value ) {
-            if (tos >= array.Length) {
-                T[] newarray = new T[array.Length * 2];
-                System.Array.Copy( array, newarray, tos );
-                array = newarray;
-            }
-            array[tos++] = value;
-        }
-
-        internal T Pop() {
-            T rslt = array[--tos];
-            array[tos] = default( T );
-            return rslt;
-        }
-
-        internal T TopElement() { return array[tos - 1]; }
-
-        internal bool IsEmpty() { return tos == 0; }
-    }
-}
-
@@ -1,45 +0,0 @@
-namespace Bts.ArithmeticExpressions;
-
-using System.Numerics;
-
-class Sum : IArithmeticExpression<double> {
-   readonly IArithmeticExpression left;
-   readonly IArithmeticExpression right;
-
-   public Sum(IArithmeticExpression left, IArithmeticExpression right) {
-      this.left = left;
-      this.right = right;
-   }
-
-   public static Sum<T, T, T> Create<T>(
-      IArithmeticExpression<T> left, IArithmeticExpression<T> right)
-      where T : INumber<T>, IAdditionOperators<T, T, T> =>
-      new(left, right);
-
-   public double Evaluate(IDictionary<string, object?> env) =>
-      evaluateArg(left, nameof(left), env) + evaluateArg(right, nameof(right), env);
-
-   static double evaluateArg(
-      IArithmeticExpression expr, string name, IDictionary<string, object?> env) {
-      var obj = expr.Evaluate(env);
-      return ConvertUtils.try_convert(expr.Evaluate(env), out double dbl) ? dbl :
-         throw new Exception(
-            $"Invalid Sum. {name} is of type {obj?.GetType()} (expected {typeof(double)})");
-   }
-}
-
-class Sum<TLeft, TRight, TResult> : IArithmeticExpression<TResult>
-   where TLeft : INumber<TLeft>, IAdditionOperators<TLeft, TRight, TResult>
-   where TRight : INumber<TRight>
-   where TResult : INumber<TResult> {
-   readonly IArithmeticExpression<TLeft> left;
-   readonly IArithmeticExpression<TRight> right;
-
-   public Sum(IArithmeticExpression<TLeft> left, IArithmeticExpression<TRight> right) {
-      this.left = left;
-      this.right = right;
-   }
-
-   public TResult Evaluate(IDictionary<string, object?> env) =>
-      left.Evaluate(env) + right.Evaluate(env);
-}
@@ -1,4 +0,0 @@
-global using System;
-global using System.Linq;
-global using System.Collections.Generic;
-global using System.Collections.Immutable;
Author	SHA1	Message	Date
John Colvin	b95da40fec	feat: Impl synthetic book	2022-11-28 10:42:05 -05:00
John Colvin	755f841a6e	refactor: Change spreader leg qty to int The synth book computation code doesn't support doubles	2022-11-25 13:20:34 -05:00
John Colvin	2d10c94b69	chore: Make csharp code compatible with net471, lang version 7	2022-11-25 13:20:33 -05:00
John Colvin	dfc5fcc16a	fix build (client): Change 'WIN32' macros to '_WIN32' Not sure exactly how this broke, but the WIN32 macro is no longer defined.	2022-11-20 14:22:42 -05:00
Taha Afzal	864e2a3edc	Comments	2022-11-10 07:18:42 -05:00
Taha Afzal	b9142202e0	UI code complete	2022-11-09 23:13:16 -05:00
Taha Afzal	7353a6dc3c	Added get_data() to LegControl.cs	2022-11-08 23:26:10 -05:00
Taha Afzal	b55eecc8b9	Eagle front end	2022-11-06 18:52:38 -05:00
Taha Afzal	3f0078d582	Added sample test	2022-05-09 23:08:59 -04:00
Taha Afzal	e47186f0fd	Fixing tests	2022-05-08 22:47:10 -04:00
Taha Afzal	4b92292fa1	Pushed a sample test	2022-05-04 09:31:09 -04:00
Taha Afzal	3a8125bba3	Namespace changes and moving all shared files to spreader_order directory	2022-05-02 23:27:30 -04:00
Taha Afzal	0b14bd1ca3	ChildOrder changed to bts::spreader::ChildOrder	2022-05-01 12:41:39 -04:00
Taha Afzal	63252b017b	Cleaning up the moved events	2022-04-30 22:31:37 -04:00
Taha Afzal	df1efb2295	Moving events to bts::spreader	2022-04-29 18:19:29 -04:00
Taha Afzal	3f37777eb9	'Moved' book and accompaying classes over	2022-04-29 00:21:34 -04:00
Taha Afzal	04629f28e8	Removing SpreaderOrder's inheritence from Order	2022-04-26 23:35:43 -04:00
Taha Afzal	47c4d8c4a7	Order is being routed to IOrderGateway	2022-04-26 00:40:17 -04:00
Taha Afzal	eb87ebcfa1	Removed IAlternateOrderGateway, fixing tests now	2022-04-24 22:21:02 -04:00
Taha Afzal	195fd11e2e	IOrderGateway accessor added to ISpreaderManager	2022-04-24 15:45:35 -04:00
Taha Afzal	413c24d147	Completed LegOrderRouter, which will be used by SpreaderChildOrderState to send orders	2022-04-24 01:18:58 -04:00
Taha Afzal	fe4be118ee	Adding LegOrderRouter	2022-04-24 00:16:09 -04:00
Taha Afzal	7ff09902b8	IOrderGateway::report_spreader_state takes an bts::integration::OrderUpdate now	2022-04-23 21:53:17 -04:00
Taha Afzal	f90e41ea65	Moved the new interface, types into their own files	2022-04-20 23:58:05 -04:00
Taha Afzal	ff2546da56	Adding function that returns OrderDef to ISpreaderManager	2022-04-20 21:46:45 -04:00
Taha Afzal	f7426d9f0f	All tests moved to use SpreaderWrapper	2022-04-18 23:43:06 -04:00
Taha Afzal	36bbcf849c	More tests for SpreaderWrapper	2022-04-18 22:43:19 -04:00
Taha Afzal	bd39d407aa	More spreader tests pass	2022-04-17 23:57:07 -04:00
Taha Afzal	81dde8e9df	Moving tests over to use SpreaderWrapper instead of SpreaderOrder	2022-04-17 18:48:51 -04:00
Taha Afzal	3f4a4fbac8	The 3 wrappers SpreaderOrderBuilder, SpreaderOrderServices and SpreaderPreActivationOrderServices do not call into the Spark infrastructure any more	2022-04-17 15:08:56 -04:00
Taha Afzal	2e6676b151	Added Spreader Wrapper	2022-04-16 23:55:39 -04:00
				`@@ -0,0 +1 @@`
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