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.devcontainer/Dockerfile

@@ -0,0 +1,125 @@
+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/ $(lsb_release -cs) main" \
+   | tee /etc/apt/sources.list.d/kitware.list > /dev/null \
+   && apt-get update \
+   && apt-get install -y cmake
+
+# Dotnet
+RUN apt-get update && apt-get install -y dotnet7
+
+# Node
+ARG node_major=18
+RUN mkdir -p /etc/apt/keyrings \
+   && curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key \
+   | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg \
+   && echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$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
+
+# Databento (deps)
+RUN apt-get update && apt-get -y install libzstd-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"

.devcontainer/devcontainer.json

@@ -0,0 +1,50 @@
+{
+  "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=${localWorkspaceFolder},target=/home/bts/spark,type=bind",
+  "workspaceFolder": "/home/bts/spark",
+  "updateRemoteUserUID": true,
+  "shutdownAction": "none",
+  // Note: If running multiple containers on the same host, each must use a
+  // unique set of ports. Usually we just add 1000 to each port as needed. For
+  // example, if 8000-8003 is taken, go with 9000-9003, then 10000-10003, etc.
+  "runArgs": [
+    "--shm-size",
+    "2gb",
+    "-p",
+    "8000:8000",
+    "-p",
+    "8001:8001",
+    "-p",
+    "8002:8002",
+    "-p",
+    "8003:8003",
+    "-p",
+    "12345:12345"
+  ],
+  "mounts": [
+    "source=${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"
+      ]
+    }
+  }
+}

.devcontainer/emumba/install_emumba-deribit-connector.sh

@@ -0,0 +1,4 @@
+#!/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"

.gitattributes

@@ -0,0 +1,3 @@
+*.cmd text=auto eol=crlf
+*.cs text=auto eol=crlf
+*.sh text=auto eol=lf

.gitignore

@@ -8,7 +8,9 @@ cmake-build-debug/
 .idea/
 .dir-locals.el
 *.pyc
-**.vscode
+**.vscode/*
+!.vscode/launch.json
+!.vscode/tasks.json
 .vs
 obj/
 *.csproj.user
@@ -54,6 +56,6 @@ trace_data/
 /src/Spark.Admin.WebApp/src/bin/
 **/CMakeDeps.cmake
 **/CMakeDeps_win.cmake
-**/.devcontainer
+.devcontainer/
 *.Generated.cs
 *.lst

.vscode/launch.json

@@ -0,0 +1,158 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": ".NET Core Attach",
+      "type": "coreclr",
+      "request": "attach"
+    },
+    {
+      "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": "build/Debug/bin/net7.0",
+      "stopAtEntry": false,
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "(gdb) Launch",
+      "type": "cppdbg",
+      "request": "launch",
+      "program": "/home/bts/spark/build/sparkd-debug-clang/server/sparkd",
+      "args": ["run"],
+      "stopAtEntry": false,
+      "cwd": "/home/bts/spark/build/sparkd-debug-clang/server",
+      "environment": [],
+      "externalConsole": false,
+      "MIMode": "gdb",
+    },
+    {
+      "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": "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",
+    },
+  ]
+}

.vscode/tasks.json

@@ -0,0 +1,828 @@
+{
+  "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 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": "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": [
+          "${env:APPDATA}/bts/conf/spark.conf"
+        ],
+      },
+      "presentation": {
+        "reveal": "always",
+        "focus": true,
+        "panel": "dedicated",
+        "showReuseMessage": false,
+        "close": true,
+      },
+      "icon": {
+        "id": "wrench"
+      },
+    },
+    {
+      "label": "Run DataStreamQueryAnalyzer",
+      "dependsOn": "Build DataStream",
+      "type": "process",
+      "command": "",
+      "windows": {
+        "command": "DataStreamQueryAnalyzer.exe",
+        "args": [
+          "--config",
+          "${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 DataStream (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 DataStream (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)"
+    }
+  ]
+}

CMakeLists.txt

@@ -14,12 +14,17 @@ set(
   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(SPARK_BIN "${EXTERNALS_ROOT}/bin")
 set(SPARK_INCLUDE "${EXTERNALS_ROOT}/include")
 set(SPARK_LIB "${EXTERNALS_ROOT}/lib/$<CONFIG>")
-set(BUILD_API_SERVER OFF CACHE BOOL "Build the api server")
 set(BUILD_DOCS OFF CACHE BOOL "Build documentation")
 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")
@@ -31,13 +36,13 @@ endif()
 include_directories(BEFORE SYSTEM ${SPARK_INCLUDE} ${EXTERNALS_ROOT}/include/zlib)
 link_directories(${SPARK_LIB})
 
-if(BUILD_API_SERVER)
-  add_compile_definitions(SPARK_ENABLE_API_SERVER)
+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)
-  add_compile_definitions(SHARED_MEMORY_PREFIX="spark")
-  add_compile_definitions(APP_DATA_DIR="\$\{APPDATA\}/bts/")
   # subdirs
   add_subdirectory(src/lib)
 else()
@@ -47,13 +52,7 @@ else()
   set(CMAKE_INSTALL_PREFIX "${CMAKE_SOURCE_DIR}/install")
   set(SPARK_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}/$<CONFIG>")
 
-  if(BUILD_API_SERVER)
-    add_compile_definitions(APP_DATA_DIR="\$\{HOME\}/spark_api/")
-    add_compile_definitions(SHARED_MEMORY_PREFIX="spark_api")
-  elseif(BUILD_SPARKD)
-    add_compile_definitions(SHARED_MEMORY_PREFIX="sparkd")
-    add_compile_definitions(APP_DATA_DIR="\$\{HOME\}/sparkdata/")
-
+  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)
@@ -133,6 +132,8 @@ else()
       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 ${EXTERNALS_ROOT}/lib/${CMAKE_BUILD_TYPE}/libonixs-fix-engine.so.4 ${CMAKE_BINARY_DIR}/server
+      
       COMMAND
         ln ARGS -sf
         ${EXTERNALS_ROOT}/lib/Release/libOnixS.IceImpactMulticastPriceFeedHandlerCpp.so.3.16.0.0

CMakePresets.json

@@ -15,11 +15,13 @@
         "rhs": "Windows"
       },
       "generator": "Visual Studio 17 2022",
-      "binaryDir": "${sourceDir}/build",
+      "binaryDir": "${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",
@@ -29,8 +31,13 @@
         "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/net8.0",
-        "DOTNET_WINDOWS_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net8.0-windows"
+        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net7.0",
+        "DOTNET_WINDOWS_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net7.0-windows",
+        "EXPORT_MD_CONSUMER": {
+          "type": "BOOL",
+          "value": "ON"
+        },
+        "SHARED_MEMORY_PREFIX": "spark"
       }
     },
 
@@ -46,6 +53,8 @@
       "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"
@@ -62,7 +71,8 @@
         "BUILD_ADMIN_WEB_APP": {
           "type": "BOOL",
           "value": "ON"
-        }
+        },
+        "SHARED_MEMORY_PREFIX": "sparkd"
       }
     },
 
@@ -95,98 +105,72 @@
     {
       "name": "sparkd-debug-clang",
       "inherits": "sparkd-debug",
-      "displayName": "Debug (clang)",
+      "displayName": "Sparkd (Debug | Clang)",
       "description": "Debug build compiled w/ clang",
-      "binaryDir": "${sourceDir}/build/clang/debug",
       "cacheVariables": {
         "CMAKE_C_COMPILER": "clang",
         "CMAKE_CXX_COMPILER": "clang++",
-        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -DDEBUG",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/clang/debug/sparkd"
+        "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": "Debug (gcc)",
+      "displayName": "Sparkd (Debug | Gcc)",
       "description": "Debug build compiled w/ gcc",
-      "binaryDir": "${sourceDir}/build/gcc/debug",
       "cacheVariables": {
         "CMAKE_C_COMPILER": "gcc",
         "CMAKE_CXX_COMPILER": "g++",
-        "CMAKE_CXX_FLAGS_DEBUG": "-g -fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -Wno-stringop-overread -DDEBUG",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/gcc/debug/sparkd"
+        "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": "Release (clang)",
+      "displayName": "Sparkd (Release | Clang)",
       "description": "Release build compiled w/ clang",
-      "binaryDir": "${sourceDir}/build/clang/release",
       "cacheVariables": {
         "CMAKE_C_COMPILER": "clang",
         "CMAKE_CXX_COMPILER": "clang++",
-        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/clang/release/sparkd"
+        "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": "Release (gcc)",
+      "displayName": "Sparkd (Release | Gcc)",
       "description": "Release build compiled w/ gcc",
-      "binaryDir": "${sourceDir}/build/gcc/release",
       "cacheVariables": {
         "CMAKE_C_COMPILER": "gcc",
         "CMAKE_CXX_COMPILER": "g++",
-        "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -Wno-stringop-overread -Wno-maybe-uninitialized -fno-omit-frame-pointer -DNDEBUG -O3",
-        "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/gcc/release/sparkd"
-      }
-    },
-
-    {
-      "name": "spark-api-server-base",
-      "hidden": true,
-      "binaryDir": "${sourceDir}/build/${presetName}",
-      "cacheVariables": {
-        "BUILD_API_SERVER": {
-          "type": "bool",
-          "value": "ON"
-        },
-        "CONFIG_DEFAULTS_PATH": "config/profiles/md_dev/*.conf;config/profiles/default/*.conf"
+        "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",
+      "displayName": "Spark Api Server (Windows)",
       "cacheVariables": {
-        "BUILD_API_SERVER": {
-          "type": "bool",
-          "value": "ON"
-        }
+        "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",
+      "displayName": "Spark Api Server (Linux)",
       "generator": "Ninja Multi-Config",
       "cacheVariables": {
+        "APP_DATA_DIR_OVERRIDE": "${dollar}{SPARK_API_SERVER_DATA_DIR}",
         "BUILD_ADMIN_WEB_APP": {
           "type": "BOOL",
           "value": "OFF"
         },
-        "BUILD_API_SERVER": {
-          "type": "bool",
-          "value": "ON"
-        },
         "BUILD_SPARKD": {
           "type": "BOOL",
           "value": "OFF"
@@ -197,7 +181,11 @@
         "CMAKE_CXX_FLAGS_RELEASE": "-fPIC -Wall -pedantic -Wextra -Werror -Wno-missing-braces -Wno-ignored-qualifiers --std=c++20 -fdiagnostics-color -fno-omit-frame-pointer -DNDEBUG -O3",
         "CMAKE_INSTALL_PREFIX": "${sourceDir}/install/${presetName}",
         "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf",
-        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net8.0"
+        "DOTNET_BINARY_DIR": "${sourceDir}/build/$<CONFIG>/bin/net7.0",
+        "EXPORT_MD_CONSUMER": {
+          "type": "BOOL",
+          "value": "ON"
+        }
       }
     },
 
@@ -220,13 +208,62 @@
     },
 
     {
-      "name": "data-stream-suite",
+      "name": "data-stream-suite-windows",
+      "condition": {
+        "type": "equals",
+        "lhs": "${hostSystemName}",
+        "rhs": "Windows"
+      },
       "inherits": "spark",
-      "displayName": "Data Stream Suite",
+      "displayName": "Data Stream Suite (Windows)",
       "description": "Data Stream utils ported over from Edge",
       "binaryDir": "${sourceDir}/build/${presetName}",
       "cacheVariables": {
-        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf;config/profiles/data_stream/*.conf"
+        "APP_DATA_DIR": "${dollar}{APPDATA}/bts/DataStream",
+        "APP_DATA_DIR_OVERRIDE": "${dollar}{DATA_STREAM_DATA_DIR}",
+        "CONFIG_DEFAULTS_PATH": "config/profiles/default/*.conf;config/profiles/data_stream/*.conf",
+        "SHARED_MEMORY_PREFIX": "data_stream"
+      }
+    },
+
+    {
+      "name": "data-stream-suite-linux",
+      "displayName": "Data Stream Suite (Linux)",
+      "description": "Data Stream utils ported over from Edge",
+      "condition": {
+        "type": "equals",
+        "lhs": "${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",
+        "EXPORT_MD_CONSUMER": {
+          "type": "BOOL",
+          "value": "ON"
+        },
+        "SHARED_MEMORY_PREFIX": "data_stream"
       }
     }
   ],
@@ -244,7 +281,7 @@
 
     {
       "name": "spark-debug",
-      "displayName": "Debug",
+      "displayName": "Spark (Debug)",
       "inherits": "spark",
       "configurePreset": "spark",
       "configuration": "Debug"
@@ -252,7 +289,7 @@
 
     {
       "name": "spark-release",
-      "displayName": "Release",
+      "displayName": "Spark (Release)",
       "inherits": "spark",
       "configurePreset": "spark",
       "configuration": "Release"
@@ -280,28 +317,28 @@
     {
       "name": "sparkd-debug-clang",
       "configurePreset": "sparkd-debug-clang",
-      "displayName": "Debug (clang)",
+      "displayName": "Sparkd (Debug | Clang)",
       "inherits": "sparkd"
     },
 
     {
       "name": "sparkd-debug-gcc",
       "configurePreset": "sparkd-debug-gcc",
-      "displayName": "Debug (gcc)",
+      "displayName": "Sparkd (Debug | Gcc)",
       "inherits": "sparkd"
     },
 
     {
       "name": "sparkd-release-clang",
       "configurePreset": "sparkd-release-clang",
-      "displayName": "Release (clang)",
+      "displayName": "Sparkd (Release | Clang)",
       "inherits": "sparkd"
     },
 
     {
       "name": "sparkd-release-gcc",
       "configurePreset": "sparkd-release-gcc",
-      "displayName": "Release (gcc)",
+      "displayName": "Sparkd (Release | Gcc)",
       "inherits": "sparkd"
     },
 
@@ -318,14 +355,14 @@
 
     {
       "name": "spark-api-server-windows-debug",
-      "displayName": "Spark Api Server (Debug)",
+      "displayName": "Spark Api Server (Windows | Debug)",
       "inherits": "spark-api-server-windows",
       "configuration": "Debug"
     },
 
     {
       "name": "spark-api-server-windows-release",
-      "displayName": "Spark Api Server (Debug)",
+      "displayName": "Spark Api Server (Windows | Release)",
       "inherits": "spark-api-server-windows",
       "configuration": "Release"
     },
@@ -344,14 +381,14 @@
     {
       "name": "spark-api-server-linux-debug",
       "inherits": "spark-api-server-linux",
-      "displayName": "Spark Api Server (Debug)",
+      "displayName": "Spark Api Server (Linux | Debug)",
       "configuration": "Debug"
     },
 
     {
       "name": "spark-api-server-linux-release",
       "inherits": "spark-api-server-linux",
-      "displayName": "Spark Api Server (Release)",
+      "displayName": "Spark Api Server (Linux | Release)",
       "configuration": "Release"
     },
 
@@ -371,16 +408,30 @@
     },
 
     {
-      "name": "data-stream-suite-debug",
-      "displayName": "DataStreamSuite (Debug)",
-      "configurePreset": "data-stream-suite",
+      "name": "data-stream-suite-windows-debug",
+      "displayName": "Data Stream Suite (Windows | Debug)",
+      "configurePreset": "data-stream-suite-windows",
       "configuration": "Debug"
     },
 
     {
-      "name": "data-stream-suite-release",
-      "displayName": "DataStreamSuite (Release)",
-      "configurePreset": "data-stream-suite",
+      "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"
     }
   ]

KeyCode.conf

@@ -1,15 +0,0 @@
-#nusers: 
-#allow concurrent : true
-#expires: 2024-Oct-06 00:00:00   638637696000000000
-#generation_time: 2023-Oct-06 18:58:48.015723   5250008173707545134
-EncryptedKeyCode {
-  value {
-    keycode: "KgoMeiVPzf/kv65GYGCyQQJVY/11sId6LYRwNNlNwA83+sISiSQnOZrziSgxjEAcaAZQn1nV4hY6MRi4XXznvxLYnDKf2bK0yktWWpSSqxqNxbDQ6AVSk5MGHptbsQSGYpYHlyCi0Niv8ES5NTj/FiBJXPrGEZABZBbNkqXIOa0HDdcxY+joeIf32ekX+5/LXN5XDTZBFT2A7q+IPDrFbKzSBvlzGOONSlq+XyKZZPqt0rXGO45V/GxFUTMYiEvn1/72iPGQ715tFXkr9ozGtitonnixzvW8Sfwmu7vM8VpWfoAc9D/1w5m5Ol5BS+Je8wigQysyrC8rud2KU+f7bQ=="
-  }
-}
-
-PublicKey {
-  value {
-    key: "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvvtV/IP1l/F85ME8N8H+\n8TCBOB68Lxd7sdR0geJGssLBq5F22IIlVKylNxiQV3TE6/hmL9dmr8FuUMrjPCal\nvma0axyAdyCMjFH3U0bYzzxnxSWuj5VJIgaZKOVQuX/3Hb+l4RZi7VWZgQFvEJ+F\ny66S2wDu4ey71Mt0yxkMsl5WMZBL3M1z+bt3pKzmBoyIMVLDcV1k1Yr2wspIRriZ\n95er3JWofK1P9s8B3OoqypEopLRW5hJaZN8YRpFNq5VwRUSj83KVobBAQTWDdOA5\nzOkixPVklZFaNyR06iT0gcgZUUM2bjyfQJGQ4GBCZpZb8KPPgtP+WhghoWby9OLv\nKQIDAQAB\n-----END PUBLIC KEY-----"
-  }
-}

cfgl

@@ -1,33 +0,0 @@
-diff.astextplain.textconv=astextplain
-filter.lfs.clean=git-lfs clean -- %f
-filter.lfs.smudge=git-lfs smudge -- %f
-filter.lfs.process=git-lfs filter-process
-filter.lfs.required=true
-http.sslbackend=openssl
-http.sslcainfo=C:/Program Files/Git/mingw64/etc/ssl/certs/ca-bundle.crt
-core.autocrlf=true
-core.fscache=true
-core.symlinks=false
-pull.rebase=false
-credential.helper=manager
-credential.https://dev.azure.com.usehttppath=true
-init.defaultbranch=master
-status.short=true
-core.repositoryformatversion=0
-core.filemode=false
-core.bare=false
-core.logallrefupdates=true
-core.symlinks=false
-core.ignorecase=true
-submodule.active=.
-remote.origin.url=git@bitbucket.org:bluetradesys/spark.git
-remote.origin.fetch=+refs/heads/*:refs/remotes/origin/*
-branch.spark_crypto.dev.remote=origin
-branch.spark_crypto.dev.merge=refs/heads/spark_crypto.dev
-submodule.docker/linux.url=git@bitbucket.org:bluetradesys/linux_docker.git
-submodule.docker/windows.url=git@bitbucket.org:bluetradesys/windows_docker.git
-submodule.externals.url=git@bitbucket.org:bluetradesys/externals.git
-branch.development.remote=origin
-branch.development.merge=refs/heads/development
-user.name=John Colvin
-user.email=john.colvin@bluetradesys.com

docker/sparkd/dev/Dockerfile

@@ -37,12 +37,8 @@ RUN apt-get update && apt-get install -y \
     && python3 -m pip install --upgrade pip
 
 # dotnet
-RUN \
-   curl -fsSLO "https://packages.microsoft.com/config/ubuntu/$(lsb_release -rs)/packages-microsoft-prod.deb" \
-   && dpkg -i packages-microsoft-prod.deb \
-   && rm packages-microsoft-prod.deb \
-   && apt-get update \
-   && apt-get install -y dotnet-sdk-8.0
+RUN apt-get update && apt-get install -y \
+    dotnet7
 
 # ssh
 RUN apt-get update && apt-get install -y \
@@ -106,12 +102,12 @@ RUN apt-get update && apt-get install -y \
 
 # set up default executables (update-alternatives)
 RUN \
-    update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-15 100; \
-    update-alternatives --install /usr/bin/clang clang /usr/bin/clang-15 100; \
-    update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-15 100; \
-    update-alternatives --install /usr/bin/clangd clangd /usr/bin/clangd-15 100; \
-    update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-12 100; \
-    update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-12 100
+    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 \

get-token.py

@@ -1,45 +0,0 @@
-# import json
-# from rauth import OAuth2Service
-
-
-# class ExampleOAuth2Client:
-#     def __init__(self, url, path, client_id, client_secret):
-#         self.access_token = None
-#         self.service = OAuth2Service(
-#             name="foo",
-#             client_id=client_id,
-#             client_secret=client_secret,
-#             access_token_url=f'{url}{path}',
-#             authorize_url=f'{url}{path}',
-#             base_url=url,
-#         )
-#         self.get_access_token()
-
-#     def get_access_token(self):
-#         data = {
-#             'grant_type': 'client_credentials',  # generally required! 
-#         }
-#         session = self.service.get_auth_session(data=data, decoder=json.loads)
-#         self.access_token = session.access_token
-
-
-# def _main():
-#     client_id = 'API_THINKALPHA123'
-#     client_secret = '$MM9Rn*#qYARY$$QTMA#AMn*'
-#     oath = ExampleOAuth2Client(
-#         url='https://authnr.cmegroup.com',
-#         path='/as/token.oath2',
-#         client_id=client_id,
-#         client_secret=client_secret,
-#     )
-#     tok = oath.get_access_token()
-#     print(tok)
-
-
-# if __name__ == '__main__':
-#     try:
-#         _main()
-#     except json.JSONDecodeError as jde:
-#         print(f'get-token.py failed with json-decode-error: {jde}.\n{jde.doc}\n\nlineno: {jde.lineno}\npos: {jde.pos}')
-#     except Exception as e:
-#         print(f'get-token.py failed: {e}')

get-token2.py

@@ -1,30 +0,0 @@
-import subprocess
-
-
-def _main():
-    host = "markets.api.uat.cmegroup.com"
-    port = "443"
-    # AUTH_ENDPOINT="$host/marketdatastream/v1"
-    AUTH_ENDPOINT = 'https://authnr.cmegroup.com/as/token.oauth2'
-    API_KEY = "API_THINKALPHA123"
-    API_SECRET = '$MM9Rn*#qYARY$$QTMA#AMn*'
-
-    # Define your API key and secret
-    # API_KEY="YOUR_API_KEY"
-    # API_SECRET="YOUR_API_SECRET"
-
-    # Define the authentication API endpoint URL
-    # AUTH_ENDPOINT="https://api.example.com/auth"
-
-    # Perform the POST request and capture the response
-    # response=$(curl -s -X POST -d "api_key=$API_KEY&api_secret=$API_SECRET&grant_type=password&username=API_THINKALPHA123&password=$API_SECRET" "$AUTH_ENDPOINT")
-    # subprocess.run('ls')
-    subprocess.run(
-        f'curl -s -X POST -d "grant_type=client_credentials&client_id={API_KEY}&client_secret={API_SECRET}" "{AUTH_ENDPOINT}"',
-    )
-
-
-# curl --user 'API_THINKALPHA123:$MM9Rn*#qYARY$$QTMA#AMn*' 'https://query-api.datamine.cmegroup.com/v3/query/query_order_record?tradedate=2023-07-10&fields=symbol,transacttime,instrumentsequencenumber,tradeprice,tradequantity,tradeflag&q=asset.eq.TN,securitytype.eq.FUT,tradeflag.nin.OBS&fileFormat=csv&securityexchange=XCBT&underlyingproduct=Interest%20Rate'
-
-if __name__ == '__main__':
-    _main()

good-dev-readme.md

@@ -1,211 +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
-[clangd ext]: https://marketplace.visualstudio.com/items?itemName=llvm-vs-code-extensions.vscode-clangd
-[cpp ext]: https://marketplace.visualstudio.com/items?itemName=ms-vscode.cpptools
-[docker]: https://www.docker.com/
-[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
-[devcontainer]: https://code.visualstudio.com/docs/devcontainers/create-dev-container
-
-# 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]**
-> *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)
-* **[Docker][docker]**
-
-### **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
-> *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]**
-> *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
-   ```
-
-## Linux
-### **Dependencies**
-* **[CMake][cmake]** (version >= 3.23)
-* **[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]**
-> *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
-   ```

mdstream_diff.patch

@@ -1,66 +0,0 @@
-diff --git a/src/DataStreamSuite/SharedStreams/Business/MarketData/MDStream.cs b/src/DataStreamSuite/SharedStreams/Business/MarketData/MDStream.cs
-index 643146112..e334c3aba 100644
---- a/src/DataStreamSuite/SharedStreams/Business/MarketData/MDStream.cs
-+++ b/src/DataStreamSuite/SharedStreams/Business/MarketData/MDStream.cs
-@@ -1,7 +1,9 @@
- namespace BCG {
-    using BCG.Utilities.General;
- 
-+   using bts;
-    using bts.api;
-+   using bts.api.core;
-    using bts.api.domain;
-    using bts.api.synthetic;
-    using bts.md;
-@@ -14,6 +16,7 @@ namespace BCG {
-    using mbts.spark;
-    using mbts.ui;
- 
-+   using Spark.Api.MarketData;
-    using Spark.Core.Data;
-    using Spark.Core.Disposables;
-    using Spark.Core.Reactive;
-@@ -39,6 +42,8 @@ namespace BCG {
-          new ColumnInfo("sec", 1, typeof(string))}, "md");
- 
-       private BlueTable _rows;
-+      readonly MarketDataClient mdClient;
-+      IDisposable? mdSub;
- 
-       public MDStream()
-       : this(String.Empty, ViewStreamDatabase.instance) {
-@@ -49,14 +54,27 @@ namespace BCG {
-          _symbol = symbol;
-          _rows = new BlueTable(_schema);
-          _md_source = new MDSource(TimeSpan.FromSeconds(0.5));
-+         mdClient = new(_md_source);
-       }
- 
-       protected override void myOnFirstSubscriber() {
-          _vsd.addWorker(this);
-          _md_source.subscribe_securities().Subscribe(c => on_md(c));
-+         Log.isnull(mdSub);
-+         mdSub = mdClient.books().Subscribe(onBooks);
-          //base.myOnFirstSubscriber();
-       }
- 
-+      void onBooks(TableUpdate<BookTuple, uint> update) {
-+         foreach (var book in update.added) {
-+            bts.Log.Gen.info($"MDStream.on_md sec: {book.security}");
-+            var sec = book.security;
-+            IBlueRow r = new BlueRow(_schema, _id++, sec.ToString());
-+            _rows.addRow(r);
-+            _is_dirty = true;
-+         }
-+      }
-+
-       protected override void myOnLastSubscriber() {
-          //base.myOnLastSubscriber();
-          _vsd.removeWorker(this);
-@@ -82,4 +100,4 @@ namespace BCG {
-          }
-       }
-    }
--}
-\ No newline at end of file
-+}

patches-ohoolihan

@@ -1,112 +0,0 @@
-diff --git a/src/client/spark/AW2/VolSurfaceExtensions.cs b/src/client/spark/AW2/VolSurfaceExtensions.cs
-index 6279d82a2..c143902a7 100644
---- a/src/client/spark/AW2/VolSurfaceExtensions.cs
-+++ b/src/client/spark/AW2/VolSurfaceExtensions.cs
-@@ -162,7 +162,8 @@ namespace mbts.spark {
-             api_sec_exp.Exchange.to_venue(),
-             api_sec_exp.SecurityType.contract_case(),
-             api_sec_exp.Symbol,
--            api_sec_exp.Expiration.date_time());
-+            api_sec_exp.HasExpiration ?
-+               api_sec_exp.Expiration.date_time() : SecurityExpiration.empty.expiration);
- 
-       public static SecurityExpiration to_sec_exp(this Security sec) =>
-          to_sec_exp(new SecurityImmutable(sec));
-diff --git a/src/client/spark/Analytics/Core/Settings/SecurityExpiration.cs b/src/client/spark/Analytics/Core/Settings/SecurityExpiration.cs
-index bf9f44455..b2ac80561 100644
---- a/src/client/spark/Analytics/Core/Settings/SecurityExpiration.cs
-+++ b/src/client/spark/Analytics/Core/Settings/SecurityExpiration.cs
-@@ -3,6 +3,7 @@ namespace mbts {
-    using bts.api;
-    using bts.utils;
- 
-+   using mbts.spark;
-    using mbts.ui.utility;
-    using mbts.utils;
- 
-@@ -25,6 +26,9 @@ namespace mbts {
-          SecurityTuple.empty.security_name,
-          DateTime.MinValue);
- 
-+      public static bts.api.domain.SecurityExpirationImmutable empty_api_sec_expi =>
-+         empty.to_api_sec_expi();
-+
-       // for deserialization
-       SecurityExpiration() =>
-          security_tuple = SecurityTuple.empty;
-diff --git a/src/client/spark/Analytics/SupportingData/AnalyticsExpirationParameters.cs b/src/client/spark/Analytics/SupportingData/AnalyticsExpirationParameters.cs
-index f5e2a73d6..0ea7b34be 100644
---- a/src/client/spark/Analytics/SupportingData/AnalyticsExpirationParameters.cs
-+++ b/src/client/spark/Analytics/SupportingData/AnalyticsExpirationParameters.cs
-@@ -50,9 +50,7 @@ namespace mbts.analytics {
-          deliverable_security ??= SecurityExpiration.empty;
-          roll_schedule_expiration ??= SecurityExpiration.empty;
- 
--         this.driver = driver ?? new(new() {
--            TimeWeightedInterpolated = new()
--         });
-+         this.driver = driver ?? _default_driver;
-          _deliverable = deliverable_security.to_api_sec_expi();
-          _roll_schedule = roll_schedule_expiration.to_api_sec_expi();
-          this.roll_target = roll_target;
-@@ -63,10 +61,10 @@ namespace mbts.analytics {
-       }
- 
-       public AnalyticsExpirationParameters(ExpirationParameterEntryImmutable db_i) {
--         _security = db_i.SecurityExpiration;
--         _deliverable = db_i.Deliverable;
--         _roll_schedule = db_i.RollSchedule;
--         driver = db_i.Driver;
-+         _security = db_i.HasSecurityExpiration ? db_i.SecurityExpiration : _default_api_sec_expi;
-+         _deliverable = db_i.HasDeliverable ? db_i.Deliverable : _default_api_sec_expi;
-+         _roll_schedule = db_i.HasRollSchedule ? db_i.RollSchedule : _default_api_sec_expi;
-+         driver = db_i.HasDriver ? db_i.Driver : _default_driver;
-          roll_target = db_i.RollTarget;
-          riskless_rate = db_i.RisklessRate;
-          settlement_price = db_i.SettlementPrice;
-@@ -74,6 +72,12 @@ namespace mbts.analytics {
-          vega_beta = db_i.VegaBeta;
-       }
- 
-+      static ExpirationDriverImmutable _default_driver =>
-+         new(new() { TimeWeightedInterpolated = new() });
-+
-+      static bts.api.domain.SecurityExpirationImmutable _default_api_sec_expi =>
-+         SecurityExpiration.empty_api_sec_expi;
-+
-       public SecurityExpiration security => _security.to_sec_exp();
-       public SecurityExpiration driver_security => driver.HasSecurity ?
-          driver.Security.to_sec_exp() : SecurityExpiration.empty;
-diff --git a/src/client/spark/NMSheets/DataProviders/NMSheetSingleOptionMainDataSource.cs b/src/client/spark/NMSheets/DataProviders/NMSheetSingleOptionMainDataSource.cs
-index 622121388..ec902f142 100644
---- a/src/client/spark/NMSheets/DataProviders/NMSheetSingleOptionMainDataSource.cs
-+++ b/src/client/spark/NMSheets/DataProviders/NMSheetSingleOptionMainDataSource.cs
-@@ -233,9 +233,18 @@ namespace BCG {
-       private IDictionary<DateTime, ATMData> _get_atm_data(ExpStrikeKeyedData<mbts.spark.TheoPoint> theo_data) {
-          NMSheetSettings sheet_settings = _threaded_bb.read_state(_in_bb_sheet_settings_tag) ?? new NMSheetSettings();
-          VolSurfaceNonVolInput vs_nvinp = _threaded_bb.read_state(_in_exp_param_tag);
--         IDictionary<DateTime, double> option_exp_roll_data = vs_nvinp != null ?
--            vs_nvinp.get_roll_map((exp) => exp.symbol == _nmsheet_symbol.option_name && exp.security_type == SecurityType.Option).ToDictionary(kv => kv.Key.expiration, kv => kv.Value) :
--            new Dictionary<DateTime, double>();
-+         var option_sym_exp_groups = vs_nvinp
-+            ?.get_roll_map(exp =>
-+               exp.symbol == _nmsheet_symbol.option_name &&
-+               exp.security_type == SecurityType.Option)
-+            ?.GroupBy(kv => kv.Key.expiration)
-+            ?.ToDictionary(kv => kv.Key, kv => kv.ToList());
-+         var option_exp_roll_data = vs_nvinp
-+            ?.get_roll_map(exp =>
-+               exp.symbol == _nmsheet_symbol.option_name &&
-+               exp.security_type == SecurityType.Option)
-+            ?.ToDictionary(kv => kv.Key.expiration, kv => kv.Value)
-+            ?? new();
-          IDictionary<DateTime, ATMData> atm_data = OptionATMDataSource.compute_atm_data(_nmsheet_symbol.option_name, _get_onefive(), theo_data, option_exp_roll_data);
-          if (sheet_settings.setting_atm.select_atm_nearest_strike_only)
-             foreach (ATMData exp_atm_data in atm_data.Values)
-@@ -306,4 +315,4 @@ namespace BCG {
-       }
-       #endregion
-    }
--}
-\ No newline at end of file
-+}

playground-1.mongodb.js

@@ -1,45 +0,0 @@
-/* global use, db */
-// MongoDB Playground
-// To disable this template go to Settings | MongoDB | Use Default Template For Playground.
-// Make sure you are connected to enable completions and to be able to run a playground.
-// Use Ctrl+Space inside a snippet or a string literal to trigger completions.
-// The result of the last command run in a playground is shown on the results panel.
-// By default the first 20 documents will be returned with a cursor.
-// Use 'console.log()' to print to the debug output.
-// For more documentation on playgrounds please refer to
-// https://www.mongodb.com/docs/mongodb-vscode/playgrounds/
-
-// Select the database to use.
-use('mongodbVSCodePlaygroundDB');
-
-// Insert a few documents into the sales collection.
-db.getCollection('sales').insertMany([
-    { 'item': 'abc', 'price': 10, 'quantity': 2, 'date': new Date('2014-03-01T08:00:00Z') },
-    { 'item': 'jkl', 'price': 20, 'quantity': 1, 'date': new Date('2014-03-01T09:00:00Z') },
-    { 'item': 'xyz', 'price': 5, 'quantity': 10, 'date': new Date('2014-03-15T09:00:00Z') },
-    { 'item': 'xyz', 'price': 5, 'quantity': 20, 'date': new Date('2014-04-04T11:21:39.736Z') },
-    { 'item': 'abc', 'price': 10, 'quantity': 10, 'date': new Date('2014-04-04T21:23:13.331Z') },
-    { 'item': 'def', 'price': 7.5, 'quantity': 5, 'date': new Date('2015-06-04T05:08:13Z') },
-    { 'item': 'def', 'price': 7.5, 'quantity': 10, 'date': new Date('2015-09-10T08:43:00Z') },
-    { 'item': 'abc', 'price': 10, 'quantity': 5, 'date': new Date('2016-02-06T20:20:13Z') },
-]);
-
-// Run a find command to view items sold on April 4th, 2014.
-const salesOnApril4th = db.getCollection('sales').find({
-    date: { $gte: new Date('2014-04-04'), $lt: new Date('2014-04-05') }
-}).count();
-
-// Print a message to the output window.
-console.log(`${salesOnApril4th} sales occurred in 2014.`);
-
-// Here we run an aggregation and open a cursor to the results.
-// Use '.toArray()' to exhaust the cursor to return the whole result set.
-// You can use '.hasNext()/.next()' to iterate through the cursor page by page.
-db.getCollection('sales').aggregate([
-    // Find all of the sales that occurred in 2014.
-    { $match: { date: { $gte: new Date('2014-01-01'), $lt: new Date('2015-01-01') } } },
-    // Group the total sales for each product.
-    { $group: { _id: '$item', totalSaleAmount: { $sum: { $multiply: ['$price', '$quantity'] } } } }
-]);
-
-

simon_private.pem

@@ -1,30 +0,0 @@
------BEGIN ENCRYPTED PRIVATE KEY-----
-MIIFHDBOBgkqhkiG9w0BBQ0wQTApBgkqhkiG9w0BBQwwHAQIgmHCnJpc1awCAggA
-MAwGCCqGSIb3DQIJBQAwFAYIKoZIhvcNAwcECPGPVlg9BOO1BIIEyHTdfD5zGKyf
-hHVm4So+G8TtIQvL+xu0oLNKQR/DVo3wo3iUD70h7oXQnLJ4CL5qo9nR75u2UghL
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-+STA1OVPzggSxbHNV16kD9mVUwzOGxD6+zmkRBrvVr3z7/Y8DO8102QrT13U7wy3
-RWWo9cNFSS4UG1yeOy0IGRzvfPVf8si6xO2GXKJZX1W3pfpUihEVDynz9I7pkw0/
-NF9CVROOgY351d0Vs7is+K9q1etpAHTRJl5phpQUXX6DTXlkjWInAXYcs+4z/kEK
-icUa9fijxvz+rx67WkEn4TmaBCIkPVJukeJFh2NHKEj9nK88/okjDExes9TDC4HC
-riGoT7honGjkmeIQd0EZo3YXzCCRcr5hCjx3z5CQThLY0MT3avNqYLs6qwaEL4ho
-Mnkiiwm/d8n5AGpqm1dI8hmJMhlQzL5a6fpcgst6bqVc7MMRrTNnY/k8ptoXyHWI
-XXkcf1SWBxwK5u14AoH5u40LORz0Shn9PKL05EeAqK5eh9TX+HmxCE7pES4uceRJ
-nBYjPp8q/NkhqHhMlVZgNcZoY3edPY4We5nYKpW4uLFl9DPckFKlaQpN+dVcSY0I
-vIsRaKXeju3YpzehRE80ztE4f8ZO8nyuGScx1PV0mYlXsjMJpAkV2J7Y3BVdFRsk
-bvQ2zfhgX5LQeC9MU0jn5cZbBO67eFxmEvtZKRt0ooZSNR748NqbfO2wHOuxfLOe
-UeZfKGvpJhHqH+nZQiEKIldf7A9ORQeVr/yhR+shv91GJtUE89cm725ODFe5NiHw
-FWVgyBFuB4DN/XVvD8oS7S+Io/q+YAfbDzYqqYjlCuoQcrEfhkcWJOKZ7nEXqEdN
-W/Ly6HAl2QddVK8xj93IGLYhzEZSU8ldw7KhRwXE2jAe9cB+tygOWygxfVpt6d3i
-q0xBLvlUVWC2aviOtQ+xvNb54JPPRTnOZ2RsOUkTPDrTEFeEm0O0lbPI1PSIMlGH
-BSQukR+n0vRfmRRs/OXipe2zJEDy6+BJ44uV+Pz5aARH4arvnfWnRKlx5+b58HEd
-Six4y+Sz2i5k6MwRCQyuPTBJHpp6zvwFCX1doPrcCN6Q0GjtDWGklPyofmuLSM3d
-8sHciqGLfv6+hSH/yY/SbyyU2MYx5WJoREYIfQ1M/V6ycppmIb7QDXrQ6nVd33FC
-73OpKaB/q1tIgdImUT7J0PeM6EmjKC3g6y0iGp9adAF2BMe19rOQjrn9lHMbFb9w
-/4uZDTLPmYZyONmMFnL47PoD3MUlJFvDPN//9g1DTk3lMLHETNzv7Lh6vR2h5Otl
-x9SnakCahQDcLYvxdKNSKHfClwMuS3gjpoT45Qki0APH+dYwGYNXDLj41t61fYkl
-v7IoGoHJ3Ym8ySWtS5MMt4kdb7eiVAzGla5TEa1RqOtU31A6W3GKSOzlY7znaBoi
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-dCLw93+lppVS8ChRH2MQDS2Mr/khQo5f+BybnY6zVBRJh7rvQ7g4U0qBzpoaj+nD
-IiX/FNTzdAYjmFa+iHB2OQ==
------END ENCRYPTED PRIVATE KEY-----

simon_public.pem

@@ -1,9 +0,0 @@
------BEGIN PUBLIC KEY-----
-MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvvtV/IP1l/F85ME8N8H+
-8TCBOB68Lxd7sdR0geJGssLBq5F22IIlVKylNxiQV3TE6/hmL9dmr8FuUMrjPCal
-vma0axyAdyCMjFH3U0bYzzxnxSWuj5VJIgaZKOVQuX/3Hb+l4RZi7VWZgQFvEJ+F
-y66S2wDu4ey71Mt0yxkMsl5WMZBL3M1z+bt3pKzmBoyIMVLDcV1k1Yr2wspIRriZ
-95er3JWofK1P9s8B3OoqypEopLRW5hJaZN8YRpFNq5VwRUSj83KVobBAQTWDdOA5
-zOkixPVklZFaNyR06iT0gcgZUUM2bjyfQJGQ4GBCZpZb8KPPgtP+WhghoWby9OLv
-KQIDAQAB
------END PUBLIC KEY-----

src/DataStreamSuite/ArithmeticExpressions/ArithmeticExpressions.csproj

@@ -1,14 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Google.Protobuf" Version="3.24.3" />
-    <PackageReference Include="YaccLexTools" Version="1.2.0" />
+    <PackageReference Include="YaccLexTools" Version="1.2.2" />
   </ItemGroup>
 
   <ItemGroup>

src/DataStreamSuite/BaseUtilities/BaseUtilities.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>

src/DataStreamSuite/BaseUtilities/Crono.cs

@@ -1,41 +1,22 @@
-using mbts.spark;
+using System.Diagnostics;
 
-using System;
-using System.Runtime;
+namespace BCG.Utilities.General;
 
-namespace BCG.Utilities.General
-{
-	/// <summary>
-	/// Summary description for Crono.
-	/// </summary>
-	public class Crono
-	{
-      public Crono()
-      {
-         myTimer = new HighPerformanceTimer();
-      }
+/// <summary>
+/// Summary description for Crono.
+/// </summary>
+public class Crono {
+   readonly Stopwatch myTimer = new();
 
-      public void start() 
-      {myTimer.start();}
+   public void start() =>
+      myTimer.Start();
 
-      public void stop()
-      {myTimer.stop();}
+   public void stop() =>
+      myTimer.Stop();
 
-      public TimeSpan time
-      {
-         get 
-         {
-            return new TimeSpan((long) (myTimer.totalMilliseconds * TimeSpan.TicksPerMillisecond));
-         }
-      }
-
-      public double miliseconds
-      {
-         get
-         {return myTimer.totalMilliseconds;}
-      }
-
-      private HighPerformanceTimer myTimer;
-	}
+   public TimeSpan time =>
+      myTimer.Elapsed;
 
+   public double miliseconds =>
+      myTimer.Elapsed.TotalMilliseconds;
 }

src/DataStreamSuite/BlueRegistry/BlueRegistry.cs

@@ -1,192 +1,192 @@
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Collections.Concurrent;
-using System.Reflection;
-using Microsoft.Win32;
-
-namespace BCG
-{
-   public enum RegistryRoot { HKCU, HKLM }
-
-   [Serializable]
-   public class BlueRegistry
-   {
-      public const string BlueSubKey = @"Software\Blue Capital Group\";
-      public static readonly string ApplicationPrefix;
-      protected string myFullPath;
-
-      public BlueRegistry(string subPath)
-      {
-         myFullPath = string.Concat(BlueRegistry.ApplicationPrefix, @"\", subPath);
-      }
-
-      public BlueRegistry(BlueRegistry parent, string subPath)
-      {
-         myFullPath = string.Concat(parent.myFullPath, @"\", subPath);
-      }
-
-      static BlueRegistry()
-      {
-         string app = "Applications";
-
-         Assembly ass = Assembly.GetEntryAssembly();
-         if (ass != null)
-         {
-            app = ass.GetName().Name;
-
-            object[] attrs = ass.GetCustomAttributes(
-               Type.GetType("System.Reflection.AssemblyTitleAttribute"), true);
-
-            if (attrs.Length > 0 && ((AssemblyTitleAttribute)attrs[0]).Title != string.Empty)
-            {
-               app = ((AssemblyTitleAttribute)attrs[0]).Title;
-            }
-         }
-
-         ApplicationPrefix = string.Concat(BlueRegistry.BlueSubKey, app);
-      }
-
-      public object getValue(string name)
-      {
-         return getValue(RegistryRoot.HKCU, name);
-      }
-
-      public object getValue(string name, object defaultValue)
-      {
-         return getValue(RegistryRoot.HKCU, name, defaultValue);
-      }
-
-      public void setValue(string name, object value)
-      {
-         setValue(RegistryRoot.HKCU, name, value);
-      }
-
-      public void deleteValue(string name)
-      {
-         deleteValue(RegistryRoot.HKCU, name);
-      }
-
-      private RegistryKey myGetRegistryKey(RegistryRoot root)
-      {
-         if (root == RegistryRoot.HKCU)
-            return Registry.CurrentUser.CreateSubKey(myFullPath);
-         else
-            return Registry.LocalMachine.CreateSubKey(myFullPath);
-      }
-
-      #region Generic Methods
-      internal virtual void setValue(RegistryRoot root, string name, object value)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            rk.SetValue(name, value);
-         }
-      }
-
-      internal virtual object getValue(RegistryRoot root, string name)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return rk.GetValue(name);
-         }
-      }
-
-      internal virtual void deleteValue(RegistryRoot root, string name)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            rk.DeleteValue(name);
-         }
-      }
-
-      internal virtual object getValue(RegistryRoot root, string name, object defaultValue)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return rk.GetValue(name, defaultValue);
-         }
-      }
-      #endregion
-
-      #region Double
-      internal virtual void setDouble(RegistryRoot root, string name, double value)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            DoubleRegistryHandler.setValue(rk, name, value);
-         }
-      }
-
-      internal virtual double getDouble(RegistryRoot root, string name)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return DoubleRegistryHandler.getValue(rk, name);
-         }
-      }
-      #endregion
-
-      #region Enum
-      internal virtual void setEnum(RegistryRoot root, string name, Enum value)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            EnumRegistryHandler.setValue(rk, name, value);
-         }
-      }
-
-      internal virtual Enum getEnum(RegistryRoot root, string name, Type enumType)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return EnumRegistryHandler.getValue(rk, name, enumType);
-         }
-      }
-      #endregion
-
-      #region Array
-      internal virtual void setArray(RegistryRoot root, string name, Array array)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            ArrayRegistryHandler.setValue(rk, name, array);
-         }
-      }
-
-      internal virtual Array getArray(RegistryRoot root, string name, Type elementType)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return ArrayRegistryHandler.getValue(rk, name, elementType);
-         }
-      }
-      #endregion
-
-      #region SortedList
-      internal virtual void setSortedList(RegistryRoot root, string name, SortedList slist)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            SortedListRegistryHandler.setValue(rk, name, slist);
-         }
-      }
-
-      internal virtual SortedList getSortedList(RegistryRoot root, string name)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            return SortedListRegistryHandler.getValue(rk, name);
-         }
-      }
-
-      internal virtual void deleteSortedList(RegistryRoot root, string name)
-      {
-         using (RegistryKey rk = myGetRegistryKey(root))
-         {
-            SortedListRegistryHandler.deleteValue(rk, name);
-         }
-      }
-      #endregion
-   }
-}
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.Concurrent;
+using System.Reflection;
+using Microsoft.Win32;
+
+namespace BCG
+{
+   public enum RegistryRoot { HKCU, HKLM }
+
+   [Serializable]
+   public class BlueRegistry
+   {
+      public const string BlueSubKey = @"Software\Blue Capital Group\";
+      public static readonly string ApplicationPrefix;
+      protected string myFullPath;
+
+      public BlueRegistry(string subPath)
+      {
+         myFullPath = string.Concat(BlueRegistry.ApplicationPrefix, @"\", subPath);
+      }
+
+      public BlueRegistry(BlueRegistry parent, string subPath)
+      {
+         myFullPath = string.Concat(parent.myFullPath, @"\", subPath);
+      }
+
+      static BlueRegistry()
+      {
+         string app = "Applications";
+
+         Assembly ass = Assembly.GetEntryAssembly();
+         if (ass != null)
+         {
+            app = ass.GetName().Name;
+
+            object[] attrs = ass.GetCustomAttributes(
+               Type.GetType("System.Reflection.AssemblyTitleAttribute"), true);
+
+            if (attrs.Length > 0 && ((AssemblyTitleAttribute)attrs[0]).Title != string.Empty)
+            {
+               app = ((AssemblyTitleAttribute)attrs[0]).Title;
+            }
+         }
+
+         ApplicationPrefix = string.Concat(BlueRegistry.BlueSubKey, app);
+      }
+
+      public object getValue(string name)
+      {
+         return getValue(RegistryRoot.HKCU, name);
+      }
+
+      public object getValue(string name, object defaultValue)
+      {
+         return getValue(RegistryRoot.HKCU, name, defaultValue);
+      }
+
+      public void setValue(string name, object value)
+      {
+         setValue(RegistryRoot.HKCU, name, value);
+      }
+
+      public void deleteValue(string name)
+      {
+         deleteValue(RegistryRoot.HKCU, name);
+      }
+
+      private RegistryKey myGetRegistryKey(RegistryRoot root)
+      {
+         if (root == RegistryRoot.HKCU)
+            return Registry.CurrentUser.CreateSubKey(myFullPath);
+         else
+            return Registry.LocalMachine.CreateSubKey(myFullPath);
+      }
+
+      #region Generic Methods
+      public virtual void setValue(RegistryRoot root, string name, object value)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            rk.SetValue(name, value);
+         }
+      }
+
+      internal virtual object getValue(RegistryRoot root, string name)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return rk.GetValue(name);
+         }
+      }
+
+      internal virtual void deleteValue(RegistryRoot root, string name)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            rk.DeleteValue(name);
+         }
+      }
+
+      public virtual object getValue(RegistryRoot root, string name, object defaultValue)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return rk.GetValue(name, defaultValue);
+         }
+      }
+      #endregion
+
+      #region Double
+      internal virtual void setDouble(RegistryRoot root, string name, double value)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            DoubleRegistryHandler.setValue(rk, name, value);
+         }
+      }
+
+      internal virtual double getDouble(RegistryRoot root, string name)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return DoubleRegistryHandler.getValue(rk, name);
+         }
+      }
+      #endregion
+
+      #region Enum
+      internal virtual void setEnum(RegistryRoot root, string name, Enum value)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            EnumRegistryHandler.setValue(rk, name, value);
+         }
+      }
+
+      internal virtual Enum getEnum(RegistryRoot root, string name, Type enumType)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return EnumRegistryHandler.getValue(rk, name, enumType);
+         }
+      }
+      #endregion
+
+      #region Array
+      internal virtual void setArray(RegistryRoot root, string name, Array array)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            ArrayRegistryHandler.setValue(rk, name, array);
+         }
+      }
+
+      internal virtual Array getArray(RegistryRoot root, string name, Type elementType)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return ArrayRegistryHandler.getValue(rk, name, elementType);
+         }
+      }
+      #endregion
+
+      #region SortedList
+      internal virtual void setSortedList(RegistryRoot root, string name, SortedList slist)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            SortedListRegistryHandler.setValue(rk, name, slist);
+         }
+      }
+
+      internal virtual SortedList getSortedList(RegistryRoot root, string name)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            return SortedListRegistryHandler.getValue(rk, name);
+         }
+      }
+
+      internal virtual void deleteSortedList(RegistryRoot root, string name)
+      {
+         using (RegistryKey rk = myGetRegistryKey(root))
+         {
+            SortedListRegistryHandler.deleteValue(rk, name);
+         }
+      }
+      #endregion
+   }
+}

src/DataStreamSuite/BlueRegistry/BlueRegistry.csproj

@@ -1,10 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0-windows</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <UseWindowsForms>true</UseWindowsForms>
   </PropertyGroup>
 
 </Project>

src/DataStreamSuite/BooleanExpressions/BooleanExpressions.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>

src/DataStreamSuite/Bts.ColumnExpressions/Bts.ColumnExpressions.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="YaccLexTools" Version="1.2.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\DataStreamCore\DataStreamCore.csproj" />
+    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
+  </ItemGroup>
+
+  <ItemGroup Label="ColumnExpression">
+    <Scanner Include="ColumnExpressionTokens.lex" />
+    <Parser Include="ColumnExpressionGrammar.y" />
+  </ItemGroup>
+
+</Project>

src/DataStreamSuite/Bts.ColumnExpressions/ColumnExpression.cs

@@ -0,0 +1,62 @@
+namespace Bts.ColumnExpressions;
+
+public class ColumnExpression {
+   public ColumnExpression(string name, Type? type = null, object? value = null) {
+      Name = name;
+      Type = type
+         ?? value?.GetType()
+         ?? throw new ArgumentException(
+            "Type must be specified explicitly when value is null", nameof(type));
+      Value = value
+         ?? DBNull.Value;
+   }
+
+   public string Name { get; }
+
+   public Type Type { get; }
+
+   public object Value { get; }
+
+   public static ColumnExpression Create<T>(string name, T value, Type? type = null) {
+      // Try to convert value to 'type' to verify they are compatible
+      // Note: Can't use `System.Type.IsAssignableFrom` because it doesn't
+      // account for implicit conversions (e.g., int -> long), just inheritance.
+      if (type is not null && !ConvertUtils.try_convert(type, value, out _)) {
+         throw new ArgumentException(
+            $"Type '{type}' is not assignable from value type '{value?.GetType()}'");
+      }
+      return new(name, type ?? typeof(T), value);
+   }
+
+   internal static Type ParseType(string typeId) {
+      return Candidates().ExceptNull().FirstOrDefault() ??
+         throw new ArgumentException($"Failed to parse Type from '{typeId}'", nameof(typeId));
+
+      IEnumerable<Type?> Candidates() {
+         if (typeId.Length == 0) {
+            yield break;
+         }
+         yield return Type.GetType(typeId);
+         yield return Type.GetType($"System.{typeId}");
+         if (typeId.Length > 1) {
+            yield return Type.GetType($"System.{char.ToUpper(typeId[0]) + typeId[1..]}");
+         }
+         yield return typeId.ToLower() switch {
+            "float64" or "double" or "real64" or "number" => typeof(double),
+            "float32" or "single" or "real32" or "real" or "float" => typeof(float),
+            "int16" or "short" or "integer16" or "signed16" => typeof(short),
+            "int32" or "int" or "integer" or "integer32" or "signed" => typeof(int),
+            "int64" or "long" or "integer64" or "signed64" => typeof(long),
+            "uint16" or "ushort" or "unsigned16" => typeof(ushort),
+            "uint32" or "uint" or "unsigned" => typeof(uint),
+            "uint64" or "ulong" or "unsigned64" => typeof(ulong),
+            "char" => typeof(char),
+            "byte" or "uint8" => typeof(byte),
+            "bool" or "boolean" => typeof(bool),
+            "string" or "text" => typeof(string),
+            "date" or "datetime" => typeof(DateTime),
+            _ => null
+         };
+      }
+   }
+}

src/DataStreamSuite/Bts.ColumnExpressions/ColumnExpressionGrammar.y

@@ -0,0 +1,49 @@
+%namespace Bts.ColumnExpressions
+%partial
+%visibility internal
+%tokentype ColumnExpressionToken
+%parsertype ColumnExpressionParser
+
+%union {
+   public int Integer;
+   public double Real;
+   public bool Boolean;
+   public string String;
+   public string Identifier;
+   public string TypeId;
+   public DateTime DateTime;
+   public Tuple<string, Type> ColumnDefinition;
+   public ColumnExpression ColumnExpression;
+   public ImmutableList<ColumnExpression> ColumnExpressions;
+}
+
+%token BOOLEAN_CONSTANT, INTEGER_CONSTANT, REAL_CONSTANT, DATE_TIME_CONSTANT, STRING_CONSTANT
+%token IDENTIFIER, EQUALS, TYPE_ID, OF_TYPE
+
+%nonassoc EQUALS
+
+%type <ColumnDefinition> ColumnDefinition
+%type <ColumnExpression> ColumnExpression
+%type <ColumnExpressions> ColumnExpressions
+
+%%
+
+ColumnExpressions :
+   ColumnExpression { $$ = ImmutableList.CreateRange(new[] { $1 }); }
+   | ColumnExpressions ColumnExpression { $$ = $1.Add($2); }
+   ;
+
+ColumnExpression :
+   ColumnDefinition EQUALS INTEGER_CONSTANT { $$ = ColumnExpression.Create($1.Item1, $3.Integer, $1.Item2); }
+   | ColumnDefinition EQUALS REAL_CONSTANT { $$ = ColumnExpression.Create($1.Item1, $3.Real, $1.Item2); }
+   | ColumnDefinition EQUALS DATE_TIME_CONSTANT { $$ = ColumnExpression.Create($1.Item1, $3.DateTime, $1.Item2); }
+   | ColumnDefinition EQUALS BOOLEAN_CONSTANT { $$ = ColumnExpression.Create($1.Item1, $3.Boolean, $1.Item2); }
+   | ColumnDefinition EQUALS STRING_CONSTANT { $$ = ColumnExpression.Create($1.Item1, $3.String, $1.Item2); }
+   | ColumnDefinition { $$ = new($1.Item1, $1.Item2); }
+   ;
+
+ColumnDefinition :
+   IDENTIFIER { $$ = new($1.Identifier, null); }
+   | IDENTIFIER OF_TYPE IDENTIFIER { $$ = new($1.Identifier, ColumnExpression.ParseType($3.Identifier)); }
+   | IDENTIFIER OF_TYPE TYPE_ID { $$ = new($1.Identifier, ColumnExpression.ParseType($3.TypeId)); }
+   ; 

src/DataStreamSuite/Bts.ColumnExpressions/ColumnExpressionInterpreter.cs

@@ -0,0 +1,18 @@
+namespace Bts.ColumnExpressions;
+
+using System.IO;
+using System.Text;
+
+public class ColumnExpressionInterpreter {
+   public static IList<ColumnExpression> Evaluate(Stream stream) {
+      var parser = new ColumnExpressionParser();
+      var res = parser.Parse(stream);
+      return res?.ColumnExpressions ?? ImmutableList<ColumnExpression>.Empty.Add(
+         res?.ColumnExpression ?? throw new Exception("Failed to parse column(s) expression"));
+   }
+
+   public static IList<ColumnExpression> Evaluate(string str) {
+      using var ms = new MemoryStream(Encoding.Default.GetBytes(str));
+      return Evaluate(ms);
+   }
+}

src/DataStreamSuite/Bts.ColumnExpressions/ColumnExpressionParser.cs

@@ -0,0 +1,18 @@
+namespace Bts.ColumnExpressions;
+
+using System.Text;
+
+partial class ColumnExpressionParser {
+   public ColumnExpressionParser() : base(null) { }
+
+   public ValueType? Parse(string s) {
+      using var ms = new MemoryStream(Encoding.Default.GetBytes(s));
+      return Parse(ms);
+   }
+
+   public ValueType? Parse(Stream stream) {
+      Scanner = new ColumnExpressionScanner(stream);
+      Parse();
+      return CurrentSemanticValue;
+   }
+}

src/DataStreamSuite/Bts.ColumnExpressions/ColumnExpressionScanner.cs

@@ -0,0 +1,9 @@
+namespace Bts.ColumnExpressions;
+
+partial class ColumnExpressionScanner {
+   public override void yyerror(string format, params object[] args) {
+      base.yyerror(format, args);
+      Console.WriteLine(format, args);
+      Console.WriteLine();
+   }
+}

src/DataStreamSuite/Bts.ColumnExpressions/ColumnExpressionTokens.lex

@@ -0,0 +1,85 @@
+%namespace Bts.ColumnExpressions
+%scannertype ColumnExpressionScanner
+%visibility internal
+%tokentype ColumnExpressionToken
+
+%option stack, minimize, parser, verbose, persistbuffer, noembedbuffers 
+
+/* Literal Constants */
+Letter                   [a-zA-Z]
+BooleanConstant          true|false
+StringConstant           '([^\'\\]*|\\.)*'
+DateTimeConstant         ([1-9]|'10'|'11'|'12')\/([1-9]|([1-2][0-9])|'30'|'31')\/[0-9][0-9][0-9]*
+IntegerConstant          -?[0-9]+
+NullConstant             'null'
+RealConstant             -?[0-9]+\.[0-9]+
+
+/* Relational Operators */
+Equals                   =
+OfType                   /
+
+Identifier               {Letter}({Letter}*[0-9]*_*)*
+NamespacePrefix          {Identifier}\.
+TypeId                   {NamespacePrefix}*{Identifier}
+
+/* Utility Tokens */
+OpenParenthesis          \(
+CloseParenthesis         \)
+Comma                    ,
+QuoteOpen                \[
+QuoteClose               \]
+
+/* Comments */
+LineComment \/\/[^\n\r]*(\n|\r|\r\n)
+
+%%
+
+{Equals} {
+   return (int)ColumnExpressionToken.EQUALS;
+}
+
+{OfType} {
+   return (int)ColumnExpressionToken.OF_TYPE;
+}
+
+{StringConstant} {
+   yylval.String = yytext.Substring(1, yytext.Length - 2).Replace(@"\'","'");
+   return (int)ColumnExpressionToken.STRING_CONSTANT;
+}
+
+{BooleanConstant} {
+   yylval.Boolean = yytext.ToLower() switch {
+      "true" => true,
+      "false" => false,
+      _ => throw new Exception(
+         string.Format("Expected yytext to be 'true' or 'false' (actually '{0}')", yytext))
+   };
+   return (int)ColumnExpressionToken.BOOLEAN_CONSTANT;
+}
+
+{DateTimeConstant} {
+   yylval.DateTime = DateTime.Parse(yytext);
+   return (int)ColumnExpressionToken.DATE_TIME_CONSTANT;
+}
+
+{IntegerConstant} {
+   yylval.Integer = int.Parse(yytext);
+   return (int)ColumnExpressionToken.INTEGER_CONSTANT;
+}
+
+{RealConstant} {
+   yylval.Real = double.Parse(yytext);
+   return (int)ColumnExpressionToken.REAL_CONSTANT;
+}
+
+{Identifier} {
+   yylval.Identifier = yytext;
+   return (int)ColumnExpressionToken.IDENTIFIER;
+}
+
+{TypeId} {
+   yylval.TypeId = yytext;   
+   return (int)ColumnExpressionToken.TYPE_ID;
+}
+
+%%

src/DataStreamSuite/Bts.ColumnExpressions/GplexBuffers.cs

@@ -0,0 +1,720 @@
+// ==============================================================
+// <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
+}

src/DataStreamSuite/Bts.ColumnExpressions/ShiftReduceParserCode.cs

@@ -0,0 +1,884 @@
+// ==============================================================
+// <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; }
+    }
+}
+

src/DataStreamSuite/Bts.ColumnExpressions/Usings.cs

@@ -0,0 +1,4 @@
+global using System;
+global using System.Linq;
+global using System.Collections.Generic;
+global using System.Collections.Immutable;

src/DataStreamSuite/Bts.ColumnSortExpressions/Bts.ColumnSortExpressions.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="YaccLexTools" Version="1.2.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\DataStreamCore\DataStreamCore.csproj" />
+    <ProjectReference Include="..\ExpressionCore\ExpressionCore.csproj" />
+    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
+  </ItemGroup>
+
+  <ItemGroup Label="ColumnSortExpression">
+    <Scanner Include="ColumnSortExpressionTokens.lex" />
+    <Parser Include="ColumnSortExpressionGrammar.y" />
+  </ItemGroup>
+
+</Project>

src/DataStreamSuite/Bts.ColumnSortExpressions/ColumnSortExpression.cs

@@ -0,0 +1,11 @@
+namespace Bts.ColumnSortExpressions;
+
+public class ColumnSortExpression {
+   public ColumnSortExpression(string name, bool isAscending = true) {
+      Name = name;
+      IsAscending = isAscending;
+   }
+
+   public string Name { get; }
+   public bool IsAscending { get; }
+}

src/DataStreamSuite/Bts.ColumnSortExpressions/ColumnSortExpressionGrammar.y

@@ -0,0 +1,29 @@
+%namespace Bts.ColumnSortExpressions
+%partial
+%visibility internal
+%tokentype ColumnSortExpressionToken
+%parsertype ColumnSortExpressionParser
+
+%union {
+   public string Identifier;
+   public ColumnSortExpression Column;
+   public ImmutableList<ColumnSortExpression> Columns;
+}
+
+%token ASCENDING, DESCENDING, IDENTIFIER
+
+%type <Column> Column
+%type <Columns> Columns
+
+%%
+
+Columns :
+   Column { $$ = ImmutableList.CreateRange(new[] { $1 }); }
+   | Columns Column { $$ = $1.Add($2); }
+   ;
+
+Column :
+   IDENTIFIER { $$ = new($1.Identifier, true); }
+   | ASCENDING IDENTIFIER { $$ = new($2.Identifier, true); }
+   | DESCENDING IDENTIFIER { $$ = new($2.Identifier, false); }
+   ;

src/DataStreamSuite/Bts.ColumnSortExpressions/ColumnSortExpressionInterpreter.cs

@@ -0,0 +1,18 @@
+namespace Bts.ColumnSortExpressions;
+
+using System.IO;
+using System.Text;
+
+public class ColumnSortExpressionInterpreter {
+   public static IList<ColumnSortExpression> Evaluate(Stream stream) {
+      var parser = new ColumnSortExpressionParser();
+      var res = parser.Parse(stream);
+      return res?.Columns ?? ImmutableList<ColumnSortExpression>.Empty.Add(
+         res?.Column ?? throw new Exception("Failed to parse column(s) expression"));
+   }
+
+   public static IList<ColumnSortExpression> Evaluate(string str) {
+      using var ms = new MemoryStream(Encoding.Default.GetBytes(str));
+      return Evaluate(ms);
+   }
+}

src/DataStreamSuite/Bts.ColumnSortExpressions/ColumnSortExpressionParser.cs

@@ -0,0 +1,18 @@
+namespace Bts.ColumnSortExpressions;
+
+using System.Text;
+
+partial class ColumnSortExpressionParser {
+   public ColumnSortExpressionParser() : base(null) { }
+
+   public ValueType? Parse(string s) {
+      using var ms = new MemoryStream(Encoding.Default.GetBytes(s));
+      return Parse(ms);
+   }
+
+   public ValueType? Parse(Stream stream) {
+      Scanner = new ColumnSortExpressionScanner(stream);
+      Parse();
+      return CurrentSemanticValue;
+   }
+}

src/DataStreamSuite/Bts.ColumnSortExpressions/ColumnSortExpressionScanner.cs

@@ -0,0 +1,9 @@
+namespace Bts.ColumnSortExpressions;
+
+partial class ColumnSortExpressionScanner {
+   public override void yyerror(string format, params object[] args) {
+      base.yyerror(format, args);
+      Console.WriteLine(format, args);
+      Console.WriteLine();
+   }
+}

src/DataStreamSuite/Bts.ColumnSortExpressions/ColumnSortExpressionTokens.lex

@@ -0,0 +1,30 @@
+%namespace Bts.ColumnSortExpressions
+%scannertype ColumnSortExpressionScanner
+%visibility internal
+%tokentype ColumnSortExpressionToken
+
+%option stack, minimize, parser, verbose, persistbuffer, noembedbuffers 
+
+/* Literal Constants */
+Letter                   [a-zA-Z]
+
+Identifier               {Letter}({Letter}*[0-9]*_*)*
+Ascending                +
+Descending               -
+
+%%
+
+{Ascending} {
+   return (int)ColumnSortExpressionToken.ASCENDING;
+}
+
+{Descending} {
+   return (int)ColumnSortExpressionToken.DESCENDING;
+}
+
+{Identifier} {
+   yylval.Identifier = yytext;
+   return (int)ColumnSortExpressionToken.IDENTIFIER;
+}
+
+%%

src/DataStreamSuite/Bts.ColumnSortExpressions/GplexBuffers.cs

@@ -0,0 +1,720 @@
+// ==============================================================
+// <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
+}

src/DataStreamSuite/Bts.ColumnSortExpressions/ShiftReduceParserCode.cs

@@ -0,0 +1,884 @@
+// ==============================================================
+// <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; }
+    }
+}
+

src/DataStreamSuite/Bts.ColumnSortExpressions/Usings.cs

@@ -0,0 +1,4 @@
+global using System;
+global using System.Linq;
+global using System.Collections.Generic;
+global using System.Collections.Immutable;

src/DataStreamSuite/Bts.DataStream.Websocket/Bts.DataStream.Websocket.csproj

@@ -1,15 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\..\client\spark_websocket\spark_websocket.csproj" />
-    <ProjectReference Include="..\DataStreamExpressions\DataStreamExpressions.csproj" />
-    <ProjectReference Include="..\..\client\spark_core\spark_core.csproj" />
-  </ItemGroup>
-
-</Project>

src/DataStreamSuite/Bts.DataStream.Websocket/ChatGptSession.cs

@@ -1,54 +0,0 @@
-using Microsoft.AspNetCore.Builder;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.Http;
-
-using System;
-using System.Net.WebSockets;
-using System.Text;
-using System.Threading;
-using System.Threading.Tasks;
-
-public class ChatGptSession {
-   public static Task Start() {
-      var host = new WebHostBuilder()
-         .UseKestrel()
-         .UseUrls("http://0.0.0.0:5000")
-         .UseStartup<ChatGptSession>()
-         .Build();
-      return host.RunAsync();
-   }
-
-   public void Configure(IApplicationBuilder app) {
-      app.UseWebSockets();
-      app.Use(async (context, next) => {
-         if (context.WebSockets.IsWebSocketRequest) {
-            WebSocket webSocket = await context.WebSockets.AcceptWebSocketAsync();
-
-            // Handle WebSocket connection
-            await HandleWebSocketConnection(webSocket);
-         } else {
-            await next();
-         }
-      });
-   }
-
-   async Task HandleWebSocketConnection(WebSocket webSocket) {
-      var buffer = new byte[1024];
-      WebSocketReceiveResult result;
-
-      while (webSocket.State == WebSocketState.Open) {
-         result = await webSocket.ReceiveAsync(new ArraySegment<byte>(buffer), CancellationToken.None);
-
-         if (result.MessageType == WebSocketMessageType.Text) {
-            var message = Encoding.UTF8.GetString(buffer, 0, result.Count);
-
-            // Echo the received message back to the client
-            await webSocket.SendAsync(new ArraySegment<byte>(Encoding.UTF8.GetBytes("Server: " + message)),
-                result.MessageType, result.EndOfMessage, CancellationToken.None);
-         } else if (result.MessageType == WebSocketMessageType.Close) {
-            // Close the WebSocket connection
-            await webSocket.CloseAsync(result.CloseStatus.Value, result.CloseStatusDescription, CancellationToken.None);
-         }
-      }
-   }
-}

src/DataStreamSuite/Bts.DataStream.Websocket/ClientSubscription.cs

@@ -1,9 +0,0 @@
-namespace Bts.DataStream.Websocket;
-
-class ClientSubscription(WebsocketClientID id, SubscriptionParams @params, IDisposable dispose) : IDisposable {
-   public SubscriptionParams Params => @params;
-   public WebsocketClientID Id => id;
-
-   public void Dispose() =>
-      dispose.Dispose();
-}

src/DataStreamSuite/Bts.DataStream.Websocket/DataSync.cs

@@ -1,229 +0,0 @@
-namespace Bts.DataStream.Websocket;
-
-using BCG;
-
-using bts;
-using bts.api.core;
-using bts.collections;
-
-using Bts.DataStreamExpressions;
-using Bts.Websocket;
-
-using mbts.utils;
-
-using Spark.Core.Disposables;
-
-using System.Reactive.Subjects;
-using System.Text.Json;
-using System.Text.Json.Nodes;
-
-/// <summary>
-/// Represents an I/O model (<see cref="ISubject{TSource, TResult}"/>), that accepts websocket
-/// requests (from clients) as input, and emits data/notifications (to clients) as output.
-/// This class's chief role is managing data subscriptions to sparkd on the clients' behalf.
-/// </summary>
-public class DataSync(ServiceContext serviceCtx, JsonSerializerOptions? serializerOpts = null) :
-   ISubject<WebsocketConnectionUpdate, IEnumerable<WebsocketOutgoingMessage>> {
-   readonly ServiceContext serviceCtx = serviceCtx;
-   readonly JsonSerializerOptions serializerOpts = serializerOpts ?? JsonSerializerOptions.Default;
-   readonly Dictionary<WebsocketClientID, List<ClientSubscription>> clients = [];
-   readonly object lockObj = new();
-
-   event Action<IEnumerable<WebsocketOutgoingMessage>>? requestSend;
-
-   public void OnCompleted() =>
-      Log.Api.info("DataSync incoming request stream has completed.");
-
-   public void OnError(Exception error) =>
-      Log.Api.error($"DataSync error: {error}");
-
-   public void OnNext(WebsocketConnectionUpdate value) {
-      switch (value.Type) {
-         case WebsocketConnectionUpdateType.IncomingMessage:
-            onIncomingMessage(value.IncomingMessage);
-            break;
-         case WebsocketConnectionUpdateType.Connect:
-            onConnect(value.Connect);
-            break;
-         case WebsocketConnectionUpdateType.Disconnect:
-            onDisconnect(value.Disconnect);
-            break;
-         default:
-            Log.assert(false, $"Unexpected WebsocketConnectionUpdate type: {value.Type}");
-            break;
-      }
-   }
-
-   public IDisposable Subscribe(IObserver<IEnumerable<WebsocketOutgoingMessage>> observer) {
-      lock (lockObj) {
-         requestSend += observer.OnNext;
-         return Disposable.Create(dispose);
-      }
-      void dispose() {
-         lock (lockObj) {
-            requestSend -= observer.OnNext;
-         }
-      }
-   }
-
-   static JsonRpcId? extractRpcId(string messageBody) {
-      try {
-         return JsonNode.Parse(messageBody)
-            ?.AsObject()
-            ?.GetValueOrDefault("id")
-            ?.Deserialize<JsonRpcId>();
-      } catch {
-         return null;
-      }
-   }
-
-   void onConnect(WebsocketConnectNotification notification) {
-      var id = notification.Id;
-      lock (lockObj) {
-         clients.Add(id, new());
-      }
-      Log.Api.info($"DataStreamWebsocketDataSync client connected. clientId: {notification.Id}");
-      if (notification.Message is not null) {
-         onIncomingMessage(notification.Message);
-      }
-   }
-
-   void onDisconnect(WebsocketDisconnectNotification notification) {
-      Log.Api.warn($"DataStreamWebsocketDataSync client disconnected. clientId: {notification.Id}");
-      unsubscribeAll(notification.Id);
-      clients.Remove(notification.Id);
-   }
-
-   void onIncomingMessage(WebsocketIncomingMessage message) {
-      var id = message.sender_client_id;
-      if (!JsonRpcRequest.TryDeserialize(message, out var req, out var err)) {
-         onBadRequest(message, err);
-         return;
-      }
-      switch (req.Method!.ToLower()) {
-         case "subscribe":
-            subscribe(id, req);
-            break;
-         case "unsubscribe":
-            unsubscribe(id, req);
-            break;
-         case "unsubscribe_all":
-            unsubscribeAll(id);
-            break;
-         default:
-            Log.Api.error($"Received request of unknown type: {req}");
-            break;
-      }
-   }
-
-   void sendNotification<T>(WebsocketClientID id, string method, T rpcParams) {
-      var rpcNotification = JsonRpcRequest.CreateNotification(method, rpcParams);
-      var rpcNotificationStr = JsonSerializer.Serialize(rpcNotification, serializerOpts);
-      send(new WebsocketOutgoingMessage[] { new(id, rpcNotificationStr) });
-   }
-
-   void sendResponse<T>(WebsocketClientID id, JsonRpcId rpcId, T rpcParams) {
-      var rpcRes = JsonRpcResponse.Create(rpcId, rpcParams);
-      var rpcResStr = JsonSerializer.Serialize(rpcRes, serializerOpts);
-      send(new WebsocketOutgoingMessage[] { new(id, rpcResStr )});
-   }
-
-   void sendError<T>(WebsocketClientID id, JsonRpcId rpcId, JsonRpcError<T> error) {
-      var rpcRes = JsonRpcResponse.CreateError(rpcId, error);
-      var rpcResStr = JsonSerializer.Serialize(rpcRes, serializerOpts);
-      send(new WebsocketOutgoingMessage[] { new(id, rpcResStr) });
-   }
-
-   bool send(IEnumerable<WebsocketOutgoingMessage> messages) {
-      lock (lockObj) {
-         if (requestSend is null) {
-            Log.Api.warn(
-               $"Unable to send message(s) because '{nameof(requestSend)}' handler is null");
-            return false;
-         }
-         requestSend(messages);
-         return true;
-      }
-   }
-
-   void subscribe(WebsocketClientID id, JsonRpcRequest<JsonObject?> req) {
-      var subParams = req.Params!.Deserialize<SubscriptionParams>()!;
-      var exp = DataStreamExpressionsInterpreter.Evaluate(subParams.Query!);
-      var stream = exp.getView(new Dictionary<string, StatementExpression>(0));
-      var sub = new ClientSubscription(id, subParams, Disposable.Create(dispose));
-      lock (lockObj) {
-         clients[id].Add(sub);
-         sendResponse(id, req.Id!.Value, req.Params);
-         stream.onChange += onChange;
-      }
-
-      void onChange(object? newValue) {
-         var dp = ExceptionAssert.of_type<DataPacket>(newValue);
-         var rpcParams = new {
-            addedRows = dp.addedRows,
-            deletedRows = dp.deletedRows
-         };
-         sendNotification(id, "subscription", rpcParams);
-      }
-
-      void dispose() =>
-         stream.onChange -= onChange;
-   }
-
-   void unsubscribe(WebsocketClientID id, JsonRpcRequest<JsonObject?> req) {
-      var subParams = req.Params!.Deserialize<SubscriptionParams>();
-      var subParamsStr = JsonSerializer.Serialize(subParams, serializerOpts);
-      // Minimize amount of code inside lock (just need it to find/remove the subscription)
-      List<ClientSubscription>? subs = null;
-      ClientSubscription? sub = null;
-      lock (lockObj) {
-         subs = clients.GetValueOrDefault(id);
-         subs?.TryRemoveFirst(s => s!.Params.Equals(subParams), out sub);
-      }
-      if (subs is null) {
-         // Didn't find client (log/throw).
-         var msg = $"Unable to unsubscribe: did not find client. Id: {id}.\nParams:\n{subParamsStr}";
-         Log.Api.error(msg);
-         throw new Exception(msg);
-      }
-      if (sub is null) {
-         // Found client, but didn't find subscription (log/throw).
-         var msg = $"Unable to unsubscribe: did not find the specified subscription. " +
-            $"Id: {id}. Request:\n{subParams}";
-         Log.Api.error(msg);
-         throw new Exception(msg);
-      }
-      // Found client and subscription (dispose/remove subscription).
-      Log.Api.info($"Unsubscribing client. Id: {id}.\nParams:\n{subParamsStr}");
-      sub.Dispose();
-   }
-
-   void unsubscribeAll(WebsocketClientID id) {
-      lock (lockObj) {
-         if (!clients.TryGetValue(id, out var subs)) {
-            throw new Exception(
-               $"Unable to unsubscribe: did not find client with id {id}");
-         }
-         subs.DisposeAll();
-         subs.Clear();
-      }
-   }
-
-   void onBadRequest(WebsocketIncomingMessage req, string? errorMsg) {
-      var rpcId = extractRpcId(req.message_body);
-      var logMsg = $"Recieved invalid request:\n{req.message_body}";
-      if (errorMsg is not null) {
-         logMsg += $"\n\n**Exception**\n{errorMsg}";
-      }
-      Log.Api.error(logMsg);
-      if (rpcId is null) {
-         return;
-      }
-      // Send error back to client
-      var rpcErr = JsonRpcError.Create(
-         (long)JsonRpcErrorCode.InvalidRequest,
-         $"Received invalid request: {errorMsg ?? "unknown error"}",
-         req.message_body);
-      sendError(req.sender_client_id, rpcId.Value, rpcErr);
-   }
-}

src/DataStreamSuite/Bts.DataStream.Websocket/JObjectExtensions.cs

@@ -1,34 +0,0 @@
-namespace Bts.DataStream.Websocket;
-
-using Newtonsoft.Json.Linq;
-
-using System.Diagnostics.CodeAnalysis;
-
-public static class JObjectExtensions {
-   public static bool TryParse<T>(
-      this JObject filter, string key, [MaybeNull] out T obj, [NotNullWhen(false)] out string? error) {
-      obj = default;
-      var value = filter.GetValueOrDefault(key)?.ToString();
-      if (value == null) {
-         error = $"{key} not present";
-         return true;
-      }
-      return WebsocketJsonParsers.TryParse(value, key, out obj, out error);
-   }
-
-   public static bool TryParse<T>(
-     this JObject filter, string key, out T result, [NotNullWhen(false)] out string? error, T defaultValue) {
-      var value = filter.GetValueOrDefault(key)?.ToString();
-      if (value == null) {
-         result = defaultValue;
-         error = $"{key} not present";
-         return true;
-      }
-      if (WebsocketJsonParsers.TryParse<T>(value, key, out var maybeRes, out error)) {
-         result = maybeRes ?? defaultValue;
-         return true;
-      }
-      result = defaultValue;
-      return false;
-   }
-}

src/DataStreamSuite/Bts.DataStream.Websocket/JsonParseResult.cs

@@ -1,24 +0,0 @@
-namespace Bts.DataStream.Websocket;
-
-using Newtonsoft.Json.Linq;
-
-class JsonParseResult {
-   public string? MessageId { get; init; }
-   public RequestType Type { get; init; }
-   public JObject? Parameters { get; init; }
-   public string? Error { get; init; }
-   public bool Successful => Error is not null;
-
-   public static JsonParseResult CreateError(string error) =>
-      new() {
-         Error = error,
-         MessageId = "missing"
-      };
-
-   public static JsonParseResult Create(string messageId, RequestType type, JObject parameters) =>
-      new() {
-         MessageId = messageId,
-         Parameters = parameters,
-         Type = type
-      };
-}

src/DataStreamSuite/Bts.DataStream.Websocket/JsonRpcErrorCode.cs

@@ -1,6 +0,0 @@
-namespace Bts.DataStream.Websocket;
-
-public enum JsonRpcErrorCode {
-   None = 0,
-   InvalidRequest = 1,
-}

src/DataStreamSuite/Bts.DataStream.Websocket/MultilineStringJsonConverter.cs

@@ -1,48 +0,0 @@
-namespace Bts.DataStream.Websocket;
-
-using Spark.Core;
-
-using System;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-
-class MultilineStringJsonConverter : JsonConverter<string> {
-   public override string? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) {
-      if (typeToConvert != typeof(string)) {
-         throw new ArgumentException($"Unable to parse {typeToConvert}", nameof(typeToConvert));
-      }
-      return reader.TokenType switch {
-         JsonTokenType.String => stringImpl(ref reader),
-         JsonTokenType.StartArray => arrayImpl(ref reader),
-         _ => throw new ArgumentException(
-            $"Unable to parse {typeof(SubscriptionParams)} from {reader.TokenType}"),
-      };
-
-      static string? stringImpl(ref Utf8JsonReader reader) =>
-         new(reader.GetString()!);
-
-      static string? arrayImpl(ref Utf8JsonReader reader) {
-         var lines = new List<string>(2);
-         while (reader.Read()) {
-            switch (reader.TokenType) {
-               case JsonTokenType.String:
-                  lines.Add(reader.GetString()!);
-                  break;
-               case JsonTokenType.EndArray:
-                  return string.Join("\n", lines);
-            }
-         }
-         throw new JsonException(
-            $"Failed to parse {typeof(SubscriptionParams)} (did not reach end of array)");
-      }
-   }
-
-   public override void Write(Utf8JsonWriter writer, string value, JsonSerializerOptions options) {
-      var lines = value.Split("\n");
-      if (lines.Length < 2) {
-         writer.WriteRawValue(value);
-         return;
-      }
-      writer.WriteRawValue($"[{", ".join(lines)}]");
-   }
-}

src/DataStreamSuite/Bts.DataStream.Websocket/RequestType.cs

@@ -1,8 +0,0 @@
-namespace Bts.DataStream.Websocket;
-
-public enum RequestType {
-   Unspecified,
-   Subscribe,
-   Unsubscribe,
-   UnsubscribeAll,
-}

src/DataStreamSuite/Bts.DataStream.Websocket/Session.cs

@@ -1,27 +0,0 @@
-namespace Bts.DataStream.Websocket;
-
-using bts;
-using bts.api.core;
-
-using Bts.Websocket;
-
-using Google.Protobuf;
-
-using System.Text.Json;
-
-public static class Session {
-   static int sessionIdCounter;
-
-   public static async Task Start(
-      ServiceContext context, WebsocketServerConfig config, JsonSerializerOptions? opts) {
-      opts ??= JsonSerializerOptions.Default;
-      var sessionId = Interlocked.Increment(ref sessionIdCounter);
-      var gateway = new WebsocketGatewayObservable(config);
-      var sync = new DataSync(context, opts);
-      using var syncSub = gateway.Subscribe(sync);
-      using var gwSub = sync.Subscribe(gateway);
-      Log.Api.info($"Starting DataStream Websocket Session {sessionId}");
-      Log.Api.info($"DataStream Websocket Session {sessionId} config:\n{JsonFormatter.Default.Format(config)}");
-      await gateway.ConnectAsync();
-   }
-}

src/DataStreamSuite/Bts.DataStream.Websocket/SubscriptionParams.cs

@@ -1,110 +0,0 @@
-namespace Bts.DataStream.Websocket;
-
-using Spark.Core;
-
-using System;
-using System.Diagnostics.CodeAnalysis;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-
-public class SubscriptionParams : IEquatable<SubscriptionParams> {
-   static class PropNames {
-      public const string QUERY = "query";
-   }
-
-   public SubscriptionParams(string? query) {
-      Query = query;
-   }
-
-   // Serializer supports plain string, or an array of lines for convenience
-   [MaybeNull]
-   [JsonPropertyName(PropNames.QUERY)]
-   [JsonConverter(typeof(MultilineStringJsonConverter))]
-   public string? Query { get; set; }
-
-   public bool Equals(SubscriptionParams? other) =>
-      other is not null &&
-      Query == other.Query;
-
-   class SubscriptionParamsConverter : JsonConverter<SubscriptionParams> {
-      public override bool CanConvert(Type typeToConvert) =>
-         typeToConvert == typeof(SubscriptionParams);
-
-      public override SubscriptionParams Read(
-         ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) {
-         if (typeToConvert != typeof(SubscriptionParams)) {
-            throw new ArgumentException($"Unable to parse {typeToConvert}", nameof(typeToConvert));
-         }
-         return read(ref reader);
-      }
-
-      SubscriptionParams read(ref Utf8JsonReader reader) {
-         return reader.TokenType switch {
-            JsonTokenType.String => stringImpl(ref reader),
-            JsonTokenType.StartArray => arrayImpl(ref reader),
-            JsonTokenType.StartObject => objectImpl(ref reader),
-            _ => throw new ArgumentException(
-               $"Unable to parse {typeof(SubscriptionParams)} from {reader.TokenType}"),
-         };
-
-         static SubscriptionParams stringImpl(ref Utf8JsonReader reader) =>
-            new(reader.GetString()!);
-
-         static SubscriptionParams arrayImpl(ref Utf8JsonReader reader) {
-            var lines = new List<string>(2);
-            while (reader.Read()) {
-               switch (reader.TokenType) {
-                  case JsonTokenType.String:
-                     lines.Add(reader.GetString()!);
-                     break;
-                  case JsonTokenType.EndArray:
-                     return new("\n".join(lines));
-               }
-            }
-            throw new JsonException(
-               $"Failed to parse {typeof(SubscriptionParams)} (did not reach end of array)");
-         }
-
-         static SubscriptionParams objectImpl(ref Utf8JsonReader reader) {
-            var lines = new List<string>(2);
-            while (reader.Read()) {
-               switch (reader.TokenType) {
-                  case JsonTokenType.PropertyName:
-                     var propName = reader.GetString()!;
-                     if (propName == PropNames.QUERY) {
-                        switch (reader.TokenType) {
-                           case JsonTokenType.StartArray:
-                              return arrayImpl(ref reader);
-                           case JsonTokenType.String:
-                              return stringImpl(ref reader);
-                        }
-                     }
-                     break;
-                  case JsonTokenType.String:
-                     lines.Add(reader.GetString()!);
-                     break;
-                  case JsonTokenType.EndArray:
-                     return new("\n".join(lines));
-               }
-            }
-            throw new JsonException(
-               $"Failed to parse {typeof(SubscriptionParams)} (did not reach end of array)");
-         }
-      }
-
-      public override void Write(
-         Utf8JsonWriter writer, SubscriptionParams value, JsonSerializerOptions options) {
-         var q = value.Query;
-         var lines = q?.Split("\n");
-         if (lines is null || lines.Length < 2) {
-            writer.WriteString(PropNames.QUERY, value.Query);
-            return;
-         }
-         writer.WriteStartArray(PropNames.QUERY);
-         foreach (var l in lines) {
-            writer.WriteStringValue(l);
-         }
-         writer.WriteEndArray();
-      }
-   }
-}

src/DataStreamSuite/Bts.DataStream.Websocket/Usings.cs

@@ -1,5 +0,0 @@
-global using bts.websocket_core;
-
-global using System;
-
-global using System.Collections.Immutable;

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Bts.DataStream.WebsocketClient.csproj

@@ -1,10 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
-
-  <PropertyGroup>
-    <TargetFramework>net7.0</TargetFramework>
-    <Nullable>enable</Nullable>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <EnableDefaultContentItems>True</EnableDefaultContentItems>
-  </PropertyGroup>
-
-</Project>

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/Error.cshtml

@@ -1,26 +0,0 @@
-@page
-@model ErrorModel
-@{
-    ViewData["Title"] = "Error";
-}
-
-<h1 class="text-danger">Error.</h1>
-<h2 class="text-danger">An error occurred while processing your request.</h2>
-
-@if (Model.ShowRequestId)
-{
-    <p>
-        <strong>Request ID:</strong> <code>@Model.RequestId</code>
-    </p>
-}
-
-<h3>Development Mode</h3>
-<p>
-    Swapping to the <strong>Development</strong> environment displays detailed information about the error that occurred.
-</p>
-<p>
-    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
-    It can result in displaying sensitive information from exceptions to end users.
-    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
-    and restarting the app.
-</p>

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/Error.cshtml.cs

@@ -1,27 +0,0 @@
-using System.Diagnostics;
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.AspNetCore.Mvc.RazorPages;
-
-namespace Bts.DataStream.WebsocketClient.Pages;
-
-[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
-[IgnoreAntiforgeryToken]
-public class ErrorModel : PageModel
-{
-    public string? RequestId { get; set; }
-
-    public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
-
-    private readonly ILogger<ErrorModel> _logger;
-
-    public ErrorModel(ILogger<ErrorModel> logger)
-    {
-        _logger = logger;
-    }
-
-    public void OnGet()
-    {
-        RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier;
-    }
-}
-

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/Index.cshtml

@@ -1,15 +0,0 @@
-@page
-@model IndexModel
-@{
-  ViewData["Title"] = "Home page";
-}
-
-<div class="text-center">
-  <h1 class="display-4">Welcome</h1>
-  <p>Learn about <a href="https://docs.microsoft.com/aspnet/core">building Web apps with ASP.NET Core</a>.</p>
-  <button id="connectButton">Connect to Websocket</button>
-  <div id="output"></div>
-  <input type="text" id="methodInput" placeholder="Enter method name" />
-  <input type="text" id="paramsInput" placeholder="Enter method parameters (if any)" />
-  <button id="sendMessageButton">Send JSON-RPC Request</button>
-</div>

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/Index.cshtml.cs

@@ -1,16 +0,0 @@
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.AspNetCore.Mvc.RazorPages;
-
-namespace Bts.DataStream.WebsocketClient.Pages;
-
-public class IndexModel : PageModel {
-   private readonly ILogger<IndexModel> _logger;
-
-   public IndexModel(ILogger<IndexModel> logger) {
-      _logger = logger;
-   }
-
-   public void OnGet() {
-
-   }
-}

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/Privacy.cshtml

@@ -1,8 +0,0 @@
-@page
-@model PrivacyModel
-@{
-    ViewData["Title"] = "Privacy Policy";
-}
-<h1>@ViewData["Title"]</h1>
-
-<p>Use this page to detail your site's privacy policy.</p>

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/Privacy.cshtml.cs

@@ -1,19 +0,0 @@
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.AspNetCore.Mvc.RazorPages;
-
-namespace Bts.DataStream.WebsocketClient.Pages;
-
-public class PrivacyModel : PageModel
-{
-    private readonly ILogger<PrivacyModel> _logger;
-
-    public PrivacyModel(ILogger<PrivacyModel> logger)
-    {
-        _logger = logger;
-    }
-
-    public void OnGet()
-    {
-    }
-}
-

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/Shared/_Layout.cshtml

@@ -1,51 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>@ViewData["Title"] - Bts.DataStream.WebsocketClient</title>
-    <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
-    <link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
-    <link rel="stylesheet" href="~/Bts.DataStream.WebsocketClient.styles.css" asp-append-version="true" />
-</head>
-<body>
-    <header>
-        <nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
-            <div class="container">
-                <a class="navbar-brand" asp-area="" asp-page="/Index">Bts.DataStream.WebsocketClient</a>
-                <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target=".navbar-collapse" aria-controls="navbarSupportedContent"
-                        aria-expanded="false" aria-label="Toggle navigation">
-                    <span class="navbar-toggler-icon"></span>
-                </button>
-                <div class="navbar-collapse collapse d-sm-inline-flex justify-content-between">
-                    <ul class="navbar-nav flex-grow-1">
-                        <li class="nav-item">
-                            <a class="nav-link text-dark" asp-area="" asp-page="/Index">Home</a>
-                        </li>
-                        <li class="nav-item">
-                            <a class="nav-link text-dark" asp-area="" asp-page="/Privacy">Privacy</a>
-                        </li>
-                    </ul>
-                </div>
-            </div>
-        </nav>
-    </header>
-    <div class="container">
-        <main role="main" class="pb-3">
-            @RenderBody()
-        </main>
-    </div>
-
-    <footer class="border-top footer text-muted">
-        <div class="container">
-            &copy; 2023 - Bts.DataStream.WebsocketClient - <a asp-area="" asp-page="/Privacy">Privacy</a>
-        </div>
-    </footer>
-
-    <script src="~/lib/jquery/dist/jquery.min.js"></script>
-    <script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
-    <script src="~/js/site.js" asp-append-version="true"></script>
-
-    @await RenderSectionAsync("Scripts", required: false)
-</body>
-</html>

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/Shared/_Layout.cshtml.css

@@ -1,48 +0,0 @@
-/* Please see documentation at https://docs.microsoft.com/aspnet/core/client-side/bundling-and-minification
-for details on configuring this project to bundle and minify static web assets. */
-
-a.navbar-brand {
-  white-space: normal;
-  text-align: center;
-  word-break: break-all;
-}
-
-a {
-  color: #0077cc;
-}
-
-.btn-primary {
-  color: #fff;
-  background-color: #1b6ec2;
-  border-color: #1861ac;
-}
-
-.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
-  color: #fff;
-  background-color: #1b6ec2;
-  border-color: #1861ac;
-}
-
-.border-top {
-  border-top: 1px solid #e5e5e5;
-}
-.border-bottom {
-  border-bottom: 1px solid #e5e5e5;
-}
-
-.box-shadow {
-  box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05);
-}
-
-button.accept-policy {
-  font-size: 1rem;
-  line-height: inherit;
-}
-
-.footer {
-  position: absolute;
-  bottom: 0;
-  width: 100%;
-  white-space: nowrap;
-  line-height: 60px;
-}

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/Shared/_ValidationScriptsPartial.cshtml

@@ -1,2 +0,0 @@
-<script src="~/lib/jquery-validation/dist/jquery.validate.min.js"></script>
-<script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/_ViewImports.cshtml

@@ -1,3 +0,0 @@
-@using Bts.DataStream.WebsocketClient
-@namespace Bts.DataStream.WebsocketClient.Pages
-@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Pages/_ViewStart.cshtml

@@ -1,3 +0,0 @@
-@{
-    Layout = "_Layout";
-}

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Program.cs

@@ -1,26 +0,0 @@
-using Microsoft.AspNetCore.Mvc;
-
-var builder = WebApplication.CreateBuilder(args);
-
-// Add services to the container.
-builder.Services.AddRazorPages();
-
-var app = builder.Build();
-
-// Configure the HTTP request pipeline.
-if (!app.Environment.IsDevelopment()) {
-   app.UseExceptionHandler("/Error");
-   // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
-   app.UseHsts();
-}
-
-app.UseHttpsRedirection();
-app.UseStaticFiles();
-
-app.UseRouting();
-
-app.UseAuthorization();
-
-app.MapRazorPages();
-
-app.Run();

src/DataStreamSuite/Bts.DataStream.WebsocketClient/Properties/launchSettings.json

@@ -1,37 +0,0 @@
-{
-  "iisSettings": {
-    "windowsAuthentication": false,
-    "anonymousAuthentication": true,
-    "iisExpress": {
-      "applicationUrl": "http://localhost:29312",
-      "sslPort": 44390
-    }
-  },
-  "profiles": {
-    "http": {
-      "commandName": "Project",
-      "dotnetRunMessages": true,
-      "launchBrowser": true,
-      "applicationUrl": "http://localhost:5214",
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    },
-    "https": {
-      "commandName": "Project",
-      "dotnetRunMessages": true,
-      "launchBrowser": true,
-      "applicationUrl": "https://localhost:7176;http://localhost:5214",
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    },
-    "IIS Express": {
-      "commandName": "IISExpress",
-      "launchBrowser": true,
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    }
-  }
-}

src/DataStreamSuite/Bts.DataStream.WebsocketClient/appsettings.Development.json

@@ -1,9 +0,0 @@
-{
-  "DetailedErrors": true,
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
-    }
-  }
-}

src/DataStreamSuite/Bts.DataStream.WebsocketClient/appsettings.json

@@ -1,9 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
-    }
-  },
-  "AllowedHosts": "*"
-}

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/css/site.css

@@ -1,22 +0,0 @@
-html {
-  font-size: 14px;
-}
-
-@media (min-width: 768px) {
-  html {
-    font-size: 16px;
-  }
-}
-
-.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
-  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
-}
-
-html {
-  position: relative;
-  min-height: 100%;
-}
-
-body {
-  margin-bottom: 60px;
-}

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/js/site.js

@@ -1,67 +0,0 @@
-// Please see documentation at https://docs.microsoft.com/aspnet/core/client-side/bundling-and-minification
-// for details on configuring this project to bundle and minify static web assets.
-
-// Write your JavaScript code.
-const connectButton = document.getElementById('connectButton');
-const output = document.getElementById('output');
-const methodInput = document.getElementById('methodInput');
-const paramsInput = document.getElementById('paramsInput');
-const sendMessageButton = document.getElementById('sendMessageButton');
-
-let socket;
-
-connectButton.addEventListener('click', () => {
-    if (socket && socket.readyState === WebSocket.OPEN) {
-        return;
-    }
-
-    socket = new WebSocket('ws://localhost:8080'); // Replace with your WebSocket server URL
-
-    socket.onopen = (event) => {
-        output.innerHTML += 'Connected to WebSocket server<br>';
-    };
-
-    socket.onmessage = (event) => {
-        const message = JSON.parse(event.data);
-        output.innerHTML += `Received JSON-RPC response: ${JSON.stringify(message)}<br>`;
-    };
-
-    socket.onclose = (event) => {
-        if (event.wasClean) {
-            output.innerHTML += `Connection closed cleanly, code=${event.code}, reason=${event.reason}<br>`;
-        } else {
-            output.innerHTML += 'Connection abruptly closed<br>';
-        }
-    };
-
-    socket.onerror = (error) => {
-        output.innerHTML += `WebSocket Error: ${error.message}<br>`;
-    };
-});
-
-sendMessageButton.addEventListener('click', () => {
-    // const method = methodInput.value;
-    // const params = paramsInput.value;
-    const method = 'subscribe';
-    const params = `{
-"expression": "literal("n", "2.0")"
-}'
-`
-    if (socket && socket.readyState === WebSocket.OPEN && method) {
-        // const reqParams = {
-        //   'expression': message
-        // }
-        const request = {
-            jsonrpc: '2.0',
-            method: method,
-            params: {
-              query: `literal("n", "2.0")`
-            },
-            id: 1, // You can set a unique ID for each request
-        };
-
-        socket.send(JSON.stringify(request));
-        methodInput.value = ''; // Clear the input fields
-        paramsInput.value = '';
-    }
-});

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/LICENSE

@@ -1,22 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) 2011-2021 Twitter, Inc.
-Copyright (c) 2011-2021 The Bootstrap Authors
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.css.map

@@ -1 +0,0 @@
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src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.min.css

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src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-grid.rtl.min.css.map

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src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.css

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-/*!
- * Bootstrap Reboot v5.1.0 (https://getbootstrap.com/)
- * Copyright 2011-2021 The Bootstrap Authors
- * Copyright 2011-2021 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
- * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
- */
-*,
-*::before,
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-  box-sizing: border-box;
-}
-
-@media (prefers-reduced-motion: no-preference) {
-  :root {
-    scroll-behavior: smooth;
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-body {
-  margin: 0;
-  font-family: var(--bs-body-font-family);
-  font-size: var(--bs-body-font-size);
-  font-weight: var(--bs-body-font-weight);
-  line-height: var(--bs-body-line-height);
-  color: var(--bs-body-color);
-  text-align: var(--bs-body-text-align);
-  background-color: var(--bs-body-bg);
-  -webkit-text-size-adjust: 100%;
-  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
-}
-
-hr {
-  margin: 1rem 0;
-  color: inherit;
-  background-color: currentColor;
-  border: 0;
-  opacity: 0.25;
-}
-
-hr:not([size]) {
-  height: 1px;
-}
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-h6, h5, h4, h3, h2, h1 {
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-  margin-bottom: 0.5rem;
-  font-weight: 500;
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-h1 {
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-  }
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-  font-size: calc(1.275rem + 0.3vw);
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-  }
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-}
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-  margin-bottom: 1rem;
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-abbr[title],
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-  margin-bottom: 1rem;
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-ol ol,
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-select {
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-[role=button] {
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-}
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-select {
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-}
-select:disabled {
-  opacity: 1;
-}
-
-[list]::-webkit-calendar-picker-indicator {
-  display: none;
-}
-
-button,
-[type=button],
-[type=reset],
-[type=submit] {
-  -webkit-appearance: button;
-}
-button:not(:disabled),
-[type=button]:not(:disabled),
-[type=reset]:not(:disabled),
-[type=submit]:not(:disabled) {
-  cursor: pointer;
-}
-
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-  padding: 0;
-  border-style: none;
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-
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-  width: 100%;
-  padding: 0;
-  margin-bottom: 0.5rem;
-  font-size: calc(1.275rem + 0.3vw);
-  line-height: inherit;
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-  legend {
-    font-size: 1.5rem;
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-legend + * {
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-::-webkit-datetime-edit-fields-wrapper,
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-::-webkit-datetime-edit-year-field {
-  padding: 0;
-}
-
-::-webkit-inner-spin-button {
-  height: auto;
-}
-
-[type=search] {
-  outline-offset: -2px;
-  -webkit-appearance: textfield;
-}
-
-/* rtl:raw:
-[type="tel"],
-[type="url"],
-[type="email"],
-[type="number"] {
-  direction: ltr;
-}
-*/
-::-webkit-search-decoration {
-  -webkit-appearance: none;
-}
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-[hidden] {
-  display: none !important;
-}
-
-/*# sourceMappingURL=bootstrap-reboot.css.map */

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.css.map

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Remove the margin in all browsers.\n// 2. As a best practice, apply a default `background-color`.\n// 3. Prevent adjustments of font size after orientation changes in iOS.\n// 4. Change the default tap highlight to be completely transparent in iOS.\n\n// scss-docs-start reboot-body-rules\nbody {\n Line truncated

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.min.css

@@ -1,8 +0,0 @@
-/*!
- * Bootstrap Reboot v5.1.0 (https://getbootstrap.com/)
- * Copyright 2011-2021 The Bootstrap Authors
- * Copyright 2011-2021 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
- * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
- */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:var(--bs-body-font-family);font-size:var(--bs-body-font-size);font-weight:var(--bs-body-font-weight);line-height:var(--bs-body-line-height);color:var(--bs-body-color);text-align:var(--bs-body-text-align);background-color:var(--bs-body-bg);-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-left:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}
-/*# sourceMappingURL=bootstrap-reboot.min.css.map */

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.min.css.map

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Remove the margin in all browsers.\n// 2. As a best practice, apply a default `background-color`.\n// 3. Prevent adjustments of font size after orientation changes in iOS.\n// 4. Change the default tap highlight to be completely transparent in iOS.\n\n// scss-docs-start reboot-body-rules\nbody {\n  margin: 0; // 1\n  font-family: var(--#{$variable-prefix}body-font-family);\n  @include font-size(var(--#{$variable-prefix}body-font-size));\n  font-weight: var(--#{$variable-prefix}body-font-weight);\n  line-height: var(--#{$variable-prefix}body-line-height);\n  color: var(--#{$variable-prefix}body-color);\n  text-align: var(--#{$variable-prefix}body-text-align);\n  background-color: var(--#{$variable-prefix}body-bg); // 2\n  -webkit-text-size-adjust: 100%; // 3\n  -wLine truncated

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.rtl.css

@@ -1,424 +0,0 @@
-/*!
- * Bootstrap Reboot v5.1.0 (https://getbootstrap.com/)
- * Copyright 2011-2021 The Bootstrap Authors
- * Copyright 2011-2021 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
- * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
- */
-*,
-*::before,
-*::after {
-  box-sizing: border-box;
-}
-
-@media (prefers-reduced-motion: no-preference) {
-  :root {
-    scroll-behavior: smooth;
-  }
-}
-
-body {
-  margin: 0;
-  font-family: var(--bs-body-font-family);
-  font-size: var(--bs-body-font-size);
-  font-weight: var(--bs-body-font-weight);
-  line-height: var(--bs-body-line-height);
-  color: var(--bs-body-color);
-  text-align: var(--bs-body-text-align);
-  background-color: var(--bs-body-bg);
-  -webkit-text-size-adjust: 100%;
-  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
-}
-
-hr {
-  margin: 1rem 0;
-  color: inherit;
-  background-color: currentColor;
-  border: 0;
-  opacity: 0.25;
-}
-
-hr:not([size]) {
-  height: 1px;
-}
-
-h6, h5, h4, h3, h2, h1 {
-  margin-top: 0;
-  margin-bottom: 0.5rem;
-  font-weight: 500;
-  line-height: 1.2;
-}
-
-h1 {
-  font-size: calc(1.375rem + 1.5vw);
-}
-@media (min-width: 1200px) {
-  h1 {
-    font-size: 2.5rem;
-  }
-}
-
-h2 {
-  font-size: calc(1.325rem + 0.9vw);
-}
-@media (min-width: 1200px) {
-  h2 {
-    font-size: 2rem;
-  }
-}
-
-h3 {
-  font-size: calc(1.3rem + 0.6vw);
-}
-@media (min-width: 1200px) {
-  h3 {
-    font-size: 1.75rem;
-  }
-}
-
-h4 {
-  font-size: calc(1.275rem + 0.3vw);
-}
-@media (min-width: 1200px) {
-  h4 {
-    font-size: 1.5rem;
-  }
-}
-
-h5 {
-  font-size: 1.25rem;
-}
-
-h6 {
-  font-size: 1rem;
-}
-
-p {
-  margin-top: 0;
-  margin-bottom: 1rem;
-}
-
-abbr[title],
-abbr[data-bs-original-title] {
-  -webkit-text-decoration: underline dotted;
-  text-decoration: underline dotted;
-  cursor: help;
-  -webkit-text-decoration-skip-ink: none;
-  text-decoration-skip-ink: none;
-}
-
-address {
-  margin-bottom: 1rem;
-  font-style: normal;
-  line-height: inherit;
-}
-
-ol,
-ul {
-  padding-right: 2rem;
-}
-
-ol,
-ul,
-dl {
-  margin-top: 0;
-  margin-bottom: 1rem;
-}
-
-ol ol,
-ul ul,
-ol ul,
-ul ol {
-  margin-bottom: 0;
-}
-
-dt {
-  font-weight: 700;
-}
-
-dd {
-  margin-bottom: 0.5rem;
-  margin-right: 0;
-}
-
-blockquote {
-  margin: 0 0 1rem;
-}
-
-b,
-strong {
-  font-weight: bolder;
-}
-
-small {
-  font-size: 0.875em;
-}
-
-mark {
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-sub,
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-  font-size: 0.75em;
-  line-height: 0;
-  vertical-align: baseline;
-}
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-sub {
-  bottom: -0.25em;
-}
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-sup {
-  top: -0.5em;
-}
-
-a {
-  color: #0d6efd;
-  text-decoration: underline;
-}
-a:hover {
-  color: #0a58ca;
-}
-
-a:not([href]):not([class]), a:not([href]):not([class]):hover {
-  color: inherit;
-  text-decoration: none;
-}
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-pre,
-code,
-kbd,
-samp {
-  font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
-  font-size: 1em;
-  direction: ltr ;
-  unicode-bidi: bidi-override;
-}
-
-pre {
-  display: block;
-  margin-top: 0;
-  margin-bottom: 1rem;
-  overflow: auto;
-  font-size: 0.875em;
-}
-pre code {
-  font-size: inherit;
-  color: inherit;
-  word-break: normal;
-}
-
-code {
-  font-size: 0.875em;
-  color: #d63384;
-  word-wrap: break-word;
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-a > code {
-  color: inherit;
-}
-
-kbd {
-  padding: 0.2rem 0.4rem;
-  font-size: 0.875em;
-  color: #fff;
-  background-color: #212529;
-  border-radius: 0.2rem;
-}
-kbd kbd {
-  padding: 0;
-  font-size: 1em;
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-}
-
-figure {
-  margin: 0 0 1rem;
-}
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-img,
-svg {
-  vertical-align: middle;
-}
-
-table {
-  caption-side: bottom;
-  border-collapse: collapse;
-}
-
-caption {
-  padding-top: 0.5rem;
-  padding-bottom: 0.5rem;
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-button:focus:not(:focus-visible) {
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-[role=button] {
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-[type=reset],
-[type=submit] {
-  -webkit-appearance: button;
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-[type=button]:not(:disabled),
-[type=reset]:not(:disabled),
-[type=submit]:not(:disabled) {
-  cursor: pointer;
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-textarea {
-  resize: vertical;
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-fieldset {
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-  padding: 0;
-  margin: 0;
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-legend {
-  float: right;
-  width: 100%;
-  padding: 0;
-  margin-bottom: 0.5rem;
-  font-size: calc(1.275rem + 0.3vw);
-  line-height: inherit;
-}
-@media (min-width: 1200px) {
-  legend {
-    font-size: 1.5rem;
-  }
-}
-legend + * {
-  clear: right;
-}
-
-::-webkit-datetime-edit-fields-wrapper,
-::-webkit-datetime-edit-text,
-::-webkit-datetime-edit-minute,
-::-webkit-datetime-edit-hour-field,
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-  padding: 0;
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-::-webkit-inner-spin-button {
-  height: auto;
-}
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-[type=search] {
-  outline-offset: -2px;
-  -webkit-appearance: textfield;
-}
-
-[type="tel"],
-[type="url"],
-[type="email"],
-[type="number"] {
-  direction: ltr;
-}
-::-webkit-search-decoration {
-  -webkit-appearance: none;
-}
-
-::-webkit-color-swatch-wrapper {
-  padding: 0;
-}
-
-::file-selector-button {
-  font: inherit;
-}
-
-::-webkit-file-upload-button {
-  font: inherit;
-  -webkit-appearance: button;
-}
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-output {
-  display: inline-block;
-}
-
-iframe {
-  border: 0;
-}
-
-summary {
-  display: list-item;
-  cursor: pointer;
-}
-
-progress {
-  vertical-align: baseline;
-}
-
-[hidden] {
-  display: none !important;
-}
-/*# sourceMappingURL=bootstrap-reboot.rtl.css.map */

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.rtl.css.map

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Remove the margin in all browsers.\n// 2. As a best practice, apply a default `background-color`.\n// 3. Prevent adjustments of font size after orientation changes in iOS.\n// 4. Change the default tap highlight to be completely transparent in iOS.\n\n// scss-docs-start reboot-body-rulLine truncated

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.rtl.min.css

@@ -1,8 +0,0 @@
-/*!
- * Bootstrap Reboot v5.1.0 (https://getbootstrap.com/)
- * Copyright 2011-2021 The Bootstrap Authors
- * Copyright 2011-2021 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
- * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
- */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:var(--bs-body-font-family);font-size:var(--bs-body-font-size);font-weight:var(--bs-body-font-weight);line-height:var(--bs-body-line-height);color:var(--bs-body-color);text-align:var(--bs-body-text-align);background-color:var(--bs-body-bg);-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-right:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-right:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:right}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:right;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:right}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}[type=email],[type=number],[type=tel],[type=url]{direction:ltr}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}
-/*# sourceMappingURL=bootstrap-reboot.rtl.min.css.map */

src/DataStreamSuite/Bts.DataStream.WebsocketClient/wwwroot/lib/bootstrap/dist/css/bootstrap-reboot.rtl.min.css.map

@@ -1 +0,0 @@
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Remove the margin in all browsers.\n// 2. As a best practice, apply a default `background-color`.\n// 3. Prevent adjustments of font size after orientation changes in iOS.\n// 4. Change the default tap highlight to be completely transparent in iOS.\n\n// scss-docs-start reboot-body-rules\nbody {\n  margin: 0; // 1\n  font-family: var(--#{$variable-prefix}body-font-family);\n  @include font-size(var(--#{$variable-prefix}body-font-size));\n  font-weight: var(--#{$variable-prefix}body-font-weight);\n  line-height: var(--#{$variable-prefix}body-line-height);\n  color: var(--#{$variable-prefix}body-color);\n  text-align: var(--#{$variable-prefix}body-text-align);\n  background-color: var(--#{$variable-prefiLine truncated