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externals/linux/include/google/protobuf/text_format.cc
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Kevin Darby 9d9046fac4 linux pbuf36
2019-01-02 21:58:49 +00:00

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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Author: jschorr@google.com (Joseph Schorr)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
#include <algorithm>
#include <float.h>
#include <math.h>
#include <stdio.h>
#include <stack>
#include <limits>
#include <vector>
#include <google/protobuf/text_format.h>
#include <google/protobuf/stubs/stringprintf.h>
#include <google/protobuf/any.h>
#include <google/protobuf/io/strtod.h>
#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/io/tokenizer.h>
#include <google/protobuf/io/zero_copy_stream.h>
#include <google/protobuf/io/zero_copy_stream_impl.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/dynamic_message.h>
#include <google/protobuf/repeated_field.h>
#include <google/protobuf/unknown_field_set.h>
#include <google/protobuf/wire_format_lite.h>
#include <google/protobuf/stubs/strutil.h>
#include <google/protobuf/stubs/map_util.h>
#include <google/protobuf/stubs/stl_util.h>
namespace google {
namespace protobuf {
namespace {
inline bool IsHexNumber(const string& str) {
return (str.length() >= 2 && str[0] == '0' &&
(str[1] == 'x' || str[1] == 'X'));
}
inline bool IsOctNumber(const string& str) {
return (str.length() >= 2 && str[0] == '0' &&
(str[1] >= '0' && str[1] < '8'));
}
} // namespace
string Message::DebugString() const {
string debug_string;
TextFormat::Printer printer;
printer.SetExpandAny(true);
printer.PrintToString(*this, &debug_string);
return debug_string;
}
string Message::ShortDebugString() const {
string debug_string;
TextFormat::Printer printer;
printer.SetSingleLineMode(true);
printer.SetExpandAny(true);
printer.PrintToString(*this, &debug_string);
// Single line mode currently might have an extra space at the end.
if (debug_string.size() > 0 &&
debug_string[debug_string.size() - 1] == ' ') {
debug_string.resize(debug_string.size() - 1);
}
return debug_string;
}
string Message::Utf8DebugString() const {
string debug_string;
TextFormat::Printer printer;
printer.SetUseUtf8StringEscaping(true);
printer.SetExpandAny(true);
printer.PrintToString(*this, &debug_string);
return debug_string;
}
void Message::PrintDebugString() const {
printf("%s", DebugString().c_str());
}
// ===========================================================================
// Implementation of the parse information tree class.
TextFormat::ParseInfoTree::ParseInfoTree() { }
TextFormat::ParseInfoTree::~ParseInfoTree() {
// Remove any nested information trees, as they are owned by this tree.
for (NestedMap::iterator it = nested_.begin(); it != nested_.end(); ++it) {
STLDeleteElements(&(it->second));
}
}
void TextFormat::ParseInfoTree::RecordLocation(
const FieldDescriptor* field,
TextFormat::ParseLocation location) {
locations_[field].push_back(location);
}
TextFormat::ParseInfoTree* TextFormat::ParseInfoTree::CreateNested(
const FieldDescriptor* field) {
// Owned by us in the map.
TextFormat::ParseInfoTree* instance = new TextFormat::ParseInfoTree();
std::vector<TextFormat::ParseInfoTree*>* trees = &nested_[field];
GOOGLE_CHECK(trees);
trees->push_back(instance);
return instance;
}
void CheckFieldIndex(const FieldDescriptor* field, int index) {
if (field == NULL) { return; }
if (field->is_repeated() && index == -1) {
GOOGLE_LOG(DFATAL) << "Index must be in range of repeated field values. "
<< "Field: " << field->name();
} else if (!field->is_repeated() && index != -1) {
GOOGLE_LOG(DFATAL) << "Index must be -1 for singular fields."
<< "Field: " << field->name();
}
}
TextFormat::ParseLocation TextFormat::ParseInfoTree::GetLocation(
const FieldDescriptor* field, int index) const {
CheckFieldIndex(field, index);
if (index == -1) { index = 0; }
const std::vector<TextFormat::ParseLocation>* locations =
FindOrNull(locations_, field);
if (locations == NULL || index >= locations->size()) {
return TextFormat::ParseLocation();
}
return (*locations)[index];
}
TextFormat::ParseInfoTree* TextFormat::ParseInfoTree::GetTreeForNested(
const FieldDescriptor* field, int index) const {
CheckFieldIndex(field, index);
if (index == -1) { index = 0; }
const std::vector<TextFormat::ParseInfoTree*>* trees =
FindOrNull(nested_, field);
if (trees == NULL || index >= trees->size()) {
return NULL;
}
return (*trees)[index];
}
namespace {
// These functions implement the behavior of the "default" TextFormat::Finder,
// they are defined as standalone to be called when finder_ is NULL.
const FieldDescriptor* DefaultFinderFindExtension(Message* message,
const string& name) {
return message->GetReflection()->FindKnownExtensionByName(name);
}
const Descriptor* DefaultFinderFindAnyType(const Message& message,
const string& prefix,
const string& name) {
if (prefix != internal::kTypeGoogleApisComPrefix &&
prefix != internal::kTypeGoogleProdComPrefix) {
return NULL;
}
return message.GetDescriptor()->file()->pool()->FindMessageTypeByName(name);
}
} // namespace
// ===========================================================================
// Internal class for parsing an ASCII representation of a Protocol Message.
// This class makes use of the Protocol Message compiler's tokenizer found
// in //google/protobuf/io/tokenizer.h. Note that class's Parse
// method is *not* thread-safe and should only be used in a single thread at
// a time.
// Makes code slightly more readable. The meaning of "DO(foo)" is
// "Execute foo and fail if it fails.", where failure is indicated by
// returning false. Borrowed from parser.cc (Thanks Kenton!).
#define DO(STATEMENT) if (STATEMENT) {} else return false
class TextFormat::Parser::ParserImpl {
public:
// Determines if repeated values for non-repeated fields and
// oneofs are permitted, e.g., the string "foo: 1 foo: 2" for a
// required/optional field named "foo", or "baz: 1 qux: 2"
// where "baz" and "qux" are members of the same oneof.
enum SingularOverwritePolicy {
ALLOW_SINGULAR_OVERWRITES = 0, // the last value is retained
FORBID_SINGULAR_OVERWRITES = 1, // an error is issued
};
ParserImpl(const Descriptor* root_message_type,
io::ZeroCopyInputStream* input_stream,
io::ErrorCollector* error_collector,
const TextFormat::Finder* finder,
ParseInfoTree* parse_info_tree,
SingularOverwritePolicy singular_overwrite_policy,
bool allow_case_insensitive_field,
bool allow_unknown_field,
bool allow_unknown_enum,
bool allow_field_number,
bool allow_relaxed_whitespace,
bool allow_partial)
: error_collector_(error_collector),
finder_(finder),
parse_info_tree_(parse_info_tree),
tokenizer_error_collector_(this),
tokenizer_(input_stream, &tokenizer_error_collector_),
root_message_type_(root_message_type),
singular_overwrite_policy_(singular_overwrite_policy),
allow_case_insensitive_field_(allow_case_insensitive_field),
allow_unknown_field_(allow_unknown_field),
allow_unknown_enum_(allow_unknown_enum),
allow_field_number_(allow_field_number),
allow_partial_(allow_partial),
had_errors_(false) {
// For backwards-compatibility with proto1, we need to allow the 'f' suffix
// for floats.
tokenizer_.set_allow_f_after_float(true);
// '#' starts a comment.
tokenizer_.set_comment_style(io::Tokenizer::SH_COMMENT_STYLE);
if (allow_relaxed_whitespace) {
tokenizer_.set_require_space_after_number(false);
tokenizer_.set_allow_multiline_strings(true);
}
// Consume the starting token.
tokenizer_.Next();
}
~ParserImpl() { }
// Parses the ASCII representation specified in input and saves the
// information into the output pointer (a Message). Returns
// false if an error occurs (an error will also be logged to
// GOOGLE_LOG(ERROR)).
bool Parse(Message* output) {
// Consume fields until we cannot do so anymore.
while (true) {
if (LookingAtType(io::Tokenizer::TYPE_END)) {
return !had_errors_;
}
DO(ConsumeField(output));
}
}
bool ParseField(const FieldDescriptor* field, Message* output) {
bool suc;
if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
suc = ConsumeFieldMessage(output, output->GetReflection(), field);
} else {
suc = ConsumeFieldValue(output, output->GetReflection(), field);
}
return suc && LookingAtType(io::Tokenizer::TYPE_END);
}
void ReportError(int line, int col, const string& message) {
had_errors_ = true;
if (error_collector_ == NULL) {
if (line >= 0) {
GOOGLE_LOG(ERROR) << "Error parsing text-format "
<< root_message_type_->full_name()
<< ": " << (line + 1) << ":"
<< (col + 1) << ": " << message;
} else {
GOOGLE_LOG(ERROR) << "Error parsing text-format "
<< root_message_type_->full_name()
<< ": " << message;
}
} else {
error_collector_->AddError(line, col, message);
}
}
void ReportWarning(int line, int col, const string& message) {
if (error_collector_ == NULL) {
if (line >= 0) {
GOOGLE_LOG(WARNING) << "Warning parsing text-format "
<< root_message_type_->full_name()
<< ": " << (line + 1) << ":"
<< (col + 1) << ": " << message;
} else {
GOOGLE_LOG(WARNING) << "Warning parsing text-format "
<< root_message_type_->full_name()
<< ": " << message;
}
} else {
error_collector_->AddWarning(line, col, message);
}
}
private:
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ParserImpl);
// Reports an error with the given message with information indicating
// the position (as derived from the current token).
void ReportError(const string& message) {
ReportError(tokenizer_.current().line, tokenizer_.current().column,
message);
}
// Reports a warning with the given message with information indicating
// the position (as derived from the current token).
void ReportWarning(const string& message) {
ReportWarning(tokenizer_.current().line, tokenizer_.current().column,
message);
}
// Consumes the specified message with the given starting delimiter.
// This method checks to see that the end delimiter at the conclusion of
// the consumption matches the starting delimiter passed in here.
bool ConsumeMessage(Message* message, const string delimiter) {
while (!LookingAt(">") && !LookingAt("}")) {
DO(ConsumeField(message));
}
// Confirm that we have a valid ending delimiter.
DO(Consume(delimiter));
return true;
}
// Consume either "<" or "{".
bool ConsumeMessageDelimiter(string* delimiter) {
if (TryConsume("<")) {
*delimiter = ">";
} else {
DO(Consume("{"));
*delimiter = "}";
}
return true;
}
// Consumes the current field (as returned by the tokenizer) on the
// passed in message.
bool ConsumeField(Message* message) {
const Reflection* reflection = message->GetReflection();
const Descriptor* descriptor = message->GetDescriptor();
string field_name;
bool reserved_field = false;
const FieldDescriptor* field = NULL;
int start_line = tokenizer_.current().line;
int start_column = tokenizer_.current().column;
const FieldDescriptor* any_type_url_field;
const FieldDescriptor* any_value_field;
if (internal::GetAnyFieldDescriptors(*message, &any_type_url_field,
&any_value_field) &&
TryConsume("[")) {
string full_type_name, prefix;
DO(ConsumeAnyTypeUrl(&full_type_name, &prefix));
DO(Consume("]"));
TryConsume(":"); // ':' is optional between message labels and values.
string serialized_value;
const Descriptor* value_descriptor =
finder_ ? finder_->FindAnyType(*message, prefix, full_type_name)
: DefaultFinderFindAnyType(*message, prefix, full_type_name);
if (value_descriptor == NULL) {
ReportError("Could not find type \"" + prefix + full_type_name +
"\" stored in google.protobuf.Any.");
return false;
}
DO(ConsumeAnyValue(value_descriptor, &serialized_value));
if (singular_overwrite_policy_ == FORBID_SINGULAR_OVERWRITES) {
// Fail if any_type_url_field has already been specified.
if ((!any_type_url_field->is_repeated() &&
reflection->HasField(*message, any_type_url_field)) ||
(!any_value_field->is_repeated() &&
reflection->HasField(*message, any_value_field))) {
ReportError("Non-repeated Any specified multiple times.");
return false;
}
}
reflection->SetString(
message, any_type_url_field,
string(prefix + full_type_name));
reflection->SetString(message, any_value_field, serialized_value);
return true;
}
if (TryConsume("[")) {
// Extension.
DO(ConsumeFullTypeName(&field_name));
DO(Consume("]"));
field = finder_ ? finder_->FindExtension(message, field_name)
: DefaultFinderFindExtension(message, field_name);
if (field == NULL) {
if (!allow_unknown_field_) {
ReportError("Extension \"" + field_name + "\" is not defined or "
"is not an extension of \"" +
descriptor->full_name() + "\".");
return false;
} else {
ReportWarning("Extension \"" + field_name + "\" is not defined or "
"is not an extension of \"" +
descriptor->full_name() + "\".");
}
}
} else {
DO(ConsumeIdentifier(&field_name));
int32 field_number;
if (allow_field_number_ && safe_strto32(field_name, &field_number)) {
if (descriptor->IsExtensionNumber(field_number)) {
field = reflection->FindKnownExtensionByNumber(field_number);
} else if (descriptor->IsReservedNumber(field_number)) {
reserved_field = true;
} else {
field = descriptor->FindFieldByNumber(field_number);
}
} else {
field = descriptor->FindFieldByName(field_name);
// Group names are expected to be capitalized as they appear in the
// .proto file, which actually matches their type names, not their
// field names.
if (field == NULL) {
string lower_field_name = field_name;
LowerString(&lower_field_name);
field = descriptor->FindFieldByName(lower_field_name);
// If the case-insensitive match worked but the field is NOT a group,
if (field != NULL && field->type() != FieldDescriptor::TYPE_GROUP) {
field = NULL;
}
}
// Again, special-case group names as described above.
if (field != NULL && field->type() == FieldDescriptor::TYPE_GROUP
&& field->message_type()->name() != field_name) {
field = NULL;
}
if (field == NULL && allow_case_insensitive_field_) {
string lower_field_name = field_name;
LowerString(&lower_field_name);
field = descriptor->FindFieldByLowercaseName(lower_field_name);
}
if (field == NULL) {
reserved_field = descriptor->IsReservedName(field_name);
}
}
if (field == NULL && !reserved_field) {
if (!allow_unknown_field_) {
ReportError("Message type \"" + descriptor->full_name() +
"\" has no field named \"" + field_name + "\".");
return false;
} else {
ReportWarning("Message type \"" + descriptor->full_name() +
"\" has no field named \"" + field_name + "\".");
}
}
}
// Skips unknown or reserved fields.
if (field == NULL) {
GOOGLE_CHECK(allow_unknown_field_ || reserved_field);
// Try to guess the type of this field.
// If this field is not a message, there should be a ":" between the
// field name and the field value and also the field value should not
// start with "{" or "<" which indicates the beginning of a message body.
// If there is no ":" or there is a "{" or "<" after ":", this field has
// to be a message or the input is ill-formed.
if (TryConsume(":") && !LookingAt("{") && !LookingAt("<")) {
return SkipFieldValue();
} else {
return SkipFieldMessage();
}
}
if (singular_overwrite_policy_ == FORBID_SINGULAR_OVERWRITES) {
// Fail if the field is not repeated and it has already been specified.
if (!field->is_repeated() && reflection->HasField(*message, field)) {
ReportError("Non-repeated field \"" + field_name +
"\" is specified multiple times.");
return false;
}
// Fail if the field is a member of a oneof and another member has already
// been specified.
const OneofDescriptor* oneof = field->containing_oneof();
if (oneof != NULL && reflection->HasOneof(*message, oneof)) {
const FieldDescriptor* other_field =
reflection->GetOneofFieldDescriptor(*message, oneof);
ReportError("Field \"" + field_name + "\" is specified along with "
"field \"" + other_field->name() + "\", another member "
"of oneof \"" + oneof->name() + "\".");
return false;
}
}
// Perform special handling for embedded message types.
if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
// ':' is optional here.
bool consumed_semicolon = TryConsume(":");
if (consumed_semicolon && field->options().weak() && LookingAtType(io::Tokenizer::TYPE_STRING)) {
// we are getting a bytes string for a weak field.
string tmp;
DO(ConsumeString(&tmp));
reflection->MutableMessage(message, field)->ParseFromString(tmp);
goto label_skip_parsing;
}
} else {
// ':' is required here.
DO(Consume(":"));
}
if (field->is_repeated() && TryConsume("[")) {
// Short repeated format, e.g. "foo: [1, 2, 3]".
if (!TryConsume("]")) {
// "foo: []" is treated as empty.
while (true) {
if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
// Perform special handling for embedded message types.
DO(ConsumeFieldMessage(message, reflection, field));
} else {
DO(ConsumeFieldValue(message, reflection, field));
}
if (TryConsume("]")) {
break;
}
DO(Consume(","));
}
}
} else if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
DO(ConsumeFieldMessage(message, reflection, field));
} else {
DO(ConsumeFieldValue(message, reflection, field));
}
label_skip_parsing:
// For historical reasons, fields may optionally be separated by commas or
// semicolons.
TryConsume(";") || TryConsume(",");
if (field->options().deprecated()) {
ReportWarning("text format contains deprecated field \""
+ field_name + "\"");
}
// If a parse info tree exists, add the location for the parsed
// field.
if (parse_info_tree_ != NULL) {
RecordLocation(parse_info_tree_, field,
ParseLocation(start_line, start_column));
}
return true;
}
// Skips the next field including the field's name and value.
bool SkipField() {
if (TryConsume("[")) {
// Extension name or type URL.
DO(ConsumeTypeUrlOrFullTypeName());
DO(Consume("]"));
} else {
string field_name;
DO(ConsumeIdentifier(&field_name));
}
// Try to guess the type of this field.
// If this field is not a message, there should be a ":" between the
// field name and the field value and also the field value should not
// start with "{" or "<" which indicates the beginning of a message body.
// If there is no ":" or there is a "{" or "<" after ":", this field has
// to be a message or the input is ill-formed.
if (TryConsume(":") && !LookingAt("{") && !LookingAt("<")) {
DO(SkipFieldValue());
} else {
DO(SkipFieldMessage());
}
// For historical reasons, fields may optionally be separated by commas or
// semicolons.
TryConsume(";") || TryConsume(",");
return true;
}
bool ConsumeFieldMessage(Message* message,
const Reflection* reflection,
const FieldDescriptor* field) {
// If the parse information tree is not NULL, create a nested one
// for the nested message.
ParseInfoTree* parent = parse_info_tree_;
if (parent != NULL) {
parse_info_tree_ = CreateNested(parent, field);
}
string delimiter;
DO(ConsumeMessageDelimiter(&delimiter));
if (field->is_repeated()) {
DO(ConsumeMessage(reflection->AddMessage(message, field), delimiter));
} else {
DO(ConsumeMessage(reflection->MutableMessage(message, field),
delimiter));
}
// Reset the parse information tree.
parse_info_tree_ = parent;
return true;
}
// Skips the whole body of a message including the beginning delimiter and
// the ending delimiter.
bool SkipFieldMessage() {
string delimiter;
DO(ConsumeMessageDelimiter(&delimiter));
while (!LookingAt(">") && !LookingAt("}")) {
DO(SkipField());
}
DO(Consume(delimiter));
return true;
}
bool ConsumeFieldValue(Message* message,
const Reflection* reflection,
const FieldDescriptor* field) {
// Define an easy to use macro for setting fields. This macro checks
// to see if the field is repeated (in which case we need to use the Add
// methods or not (in which case we need to use the Set methods).
#define SET_FIELD(CPPTYPE, VALUE) \
if (field->is_repeated()) { \
reflection->Add##CPPTYPE(message, field, VALUE); \
} else { \
reflection->Set##CPPTYPE(message, field, VALUE); \
} \
switch(field->cpp_type()) {
case FieldDescriptor::CPPTYPE_INT32: {
int64 value;
DO(ConsumeSignedInteger(&value, kint32max));
SET_FIELD(Int32, static_cast<int32>(value));
break;
}
case FieldDescriptor::CPPTYPE_UINT32: {
uint64 value;
DO(ConsumeUnsignedInteger(&value, kuint32max));
SET_FIELD(UInt32, static_cast<uint32>(value));
break;
}
case FieldDescriptor::CPPTYPE_INT64: {
int64 value;
DO(ConsumeSignedInteger(&value, kint64max));
SET_FIELD(Int64, value);
break;
}
case FieldDescriptor::CPPTYPE_UINT64: {
uint64 value;
DO(ConsumeUnsignedInteger(&value, kuint64max));
SET_FIELD(UInt64, value);
break;
}
case FieldDescriptor::CPPTYPE_FLOAT: {
double value;
DO(ConsumeDouble(&value));
SET_FIELD(Float, io::SafeDoubleToFloat(value));
break;
}
case FieldDescriptor::CPPTYPE_DOUBLE: {
double value;
DO(ConsumeDouble(&value));
SET_FIELD(Double, value);
break;
}
case FieldDescriptor::CPPTYPE_STRING: {
string value;
DO(ConsumeString(&value));
SET_FIELD(String, value);
break;
}
case FieldDescriptor::CPPTYPE_BOOL: {
if (LookingAtType(io::Tokenizer::TYPE_INTEGER)) {
uint64 value;
DO(ConsumeUnsignedInteger(&value, 1));
SET_FIELD(Bool, value);
} else {
string value;
DO(ConsumeIdentifier(&value));
if (value == "true" || value == "True" || value == "t") {
SET_FIELD(Bool, true);
} else if (value == "false" || value == "False" || value == "f") {
SET_FIELD(Bool, false);
} else {
ReportError("Invalid value for boolean field \"" + field->name()
+ "\". Value: \"" + value + "\".");
return false;
}
}
break;
}
case FieldDescriptor::CPPTYPE_ENUM: {
string value;
const EnumDescriptor* enum_type = field->enum_type();
const EnumValueDescriptor* enum_value = NULL;
if (LookingAtType(io::Tokenizer::TYPE_IDENTIFIER)) {
DO(ConsumeIdentifier(&value));
// Find the enumeration value.
enum_value = enum_type->FindValueByName(value);
} else if (LookingAt("-") ||
LookingAtType(io::Tokenizer::TYPE_INTEGER)) {
int64 int_value;
DO(ConsumeSignedInteger(&int_value, kint32max));
value = SimpleItoa(int_value); // for error reporting
enum_value = enum_type->FindValueByNumber(int_value);
} else {
ReportError("Expected integer or identifier, got: " +
tokenizer_.current().text);
return false;
}
if (enum_value == NULL) {
if (!allow_unknown_enum_) {
ReportError("Unknown enumeration value of \"" + value + "\" for "
"field \"" + field->name() + "\".");
return false;
} else {
ReportWarning("Unknown enumeration value of \"" + value + "\" for "
"field \"" + field->name() + "\".");
return true;
}
}
SET_FIELD(Enum, enum_value);
break;
}
case FieldDescriptor::CPPTYPE_MESSAGE: {
// We should never get here. Put here instead of a default
// so that if new types are added, we get a nice compiler warning.
GOOGLE_LOG(FATAL) << "Reached an unintended state: CPPTYPE_MESSAGE";
break;
}
}
#undef SET_FIELD
return true;
}
bool SkipFieldValue() {
if (LookingAtType(io::Tokenizer::TYPE_STRING)) {
while (LookingAtType(io::Tokenizer::TYPE_STRING)) {
tokenizer_.Next();
}
return true;
}
if (TryConsume("[")) {
while (true) {
if (!LookingAt("{") && !LookingAt("<")) {
DO(SkipFieldValue());
} else {
DO(SkipFieldMessage());
}
if (TryConsume("]")) {
break;
}
DO(Consume(","));
}
return true;
}
// Possible field values other than string:
// 12345 => TYPE_INTEGER
// -12345 => TYPE_SYMBOL + TYPE_INTEGER
// 1.2345 => TYPE_FLOAT
// -1.2345 => TYPE_SYMBOL + TYPE_FLOAT
// inf => TYPE_IDENTIFIER
// -inf => TYPE_SYMBOL + TYPE_IDENTIFIER
// TYPE_INTEGER => TYPE_IDENTIFIER
// Divides them into two group, one with TYPE_SYMBOL
// and the other without:
// Group one:
// 12345 => TYPE_INTEGER
// 1.2345 => TYPE_FLOAT
// inf => TYPE_IDENTIFIER
// TYPE_INTEGER => TYPE_IDENTIFIER
// Group two:
// -12345 => TYPE_SYMBOL + TYPE_INTEGER
// -1.2345 => TYPE_SYMBOL + TYPE_FLOAT
// -inf => TYPE_SYMBOL + TYPE_IDENTIFIER
// As we can see, the field value consists of an optional '-' and one of
// TYPE_INTEGER, TYPE_FLOAT and TYPE_IDENTIFIER.
bool has_minus = TryConsume("-");
if (!LookingAtType(io::Tokenizer::TYPE_INTEGER) &&
!LookingAtType(io::Tokenizer::TYPE_FLOAT) &&
!LookingAtType(io::Tokenizer::TYPE_IDENTIFIER)) {
return false;
}
// Combination of '-' and TYPE_IDENTIFIER may result in an invalid field
// value while other combinations all generate valid values.
// We check if the value of this combination is valid here.
// TYPE_IDENTIFIER after a '-' should be one of the float values listed
// below:
// inf, inff, infinity, nan
if (has_minus && LookingAtType(io::Tokenizer::TYPE_IDENTIFIER)) {
string text = tokenizer_.current().text;
LowerString(&text);
if (text != "inf" &&
text != "infinity" &&
text != "nan") {
ReportError("Invalid float number: " + text);
return false;
}
}
tokenizer_.Next();
return true;
}
// Returns true if the current token's text is equal to that specified.
bool LookingAt(const string& text) {
return tokenizer_.current().text == text;
}
// Returns true if the current token's type is equal to that specified.
bool LookingAtType(io::Tokenizer::TokenType token_type) {
return tokenizer_.current().type == token_type;
}
// Consumes an identifier and saves its value in the identifier parameter.
// Returns false if the token is not of type IDENTFIER.
bool ConsumeIdentifier(string* identifier) {
if (LookingAtType(io::Tokenizer::TYPE_IDENTIFIER)) {
*identifier = tokenizer_.current().text;
tokenizer_.Next();
return true;
}
// If allow_field_numer_ or allow_unknown_field_ is true, we should able
// to parse integer identifiers.
if ((allow_field_number_ || allow_unknown_field_)
&& LookingAtType(io::Tokenizer::TYPE_INTEGER)) {
*identifier = tokenizer_.current().text;
tokenizer_.Next();
return true;
}
ReportError("Expected identifier, got: " + tokenizer_.current().text);
return false;
}
// Consume a string of form "<id1>.<id2>....<idN>".
bool ConsumeFullTypeName(string* name) {
DO(ConsumeIdentifier(name));
while (TryConsume(".")) {
string part;
DO(ConsumeIdentifier(&part));
*name += ".";
*name += part;
}
return true;
}
bool ConsumeTypeUrlOrFullTypeName() {
string discarded;
DO(ConsumeIdentifier(&discarded));
while (TryConsume(".") || TryConsume("/")) {
DO(ConsumeIdentifier(&discarded));
}
return true;
}
// Consumes a string and saves its value in the text parameter.
// Returns false if the token is not of type STRING.
bool ConsumeString(string* text) {
if (!LookingAtType(io::Tokenizer::TYPE_STRING)) {
ReportError("Expected string, got: " + tokenizer_.current().text);
return false;
}
text->clear();
while (LookingAtType(io::Tokenizer::TYPE_STRING)) {
io::Tokenizer::ParseStringAppend(tokenizer_.current().text, text);
tokenizer_.Next();
}
return true;
}
// Consumes a uint64 and saves its value in the value parameter.
// Returns false if the token is not of type INTEGER.
bool ConsumeUnsignedInteger(uint64* value, uint64 max_value) {
if (!LookingAtType(io::Tokenizer::TYPE_INTEGER)) {
ReportError("Expected integer, got: " + tokenizer_.current().text);
return false;
}
if (!io::Tokenizer::ParseInteger(tokenizer_.current().text,
max_value, value)) {
ReportError("Integer out of range (" + tokenizer_.current().text + ")");
return false;
}
tokenizer_.Next();
return true;
}
// Consumes an int64 and saves its value in the value parameter.
// Note that since the tokenizer does not support negative numbers,
// we actually may consume an additional token (for the minus sign) in this
// method. Returns false if the token is not an integer
// (signed or otherwise).
bool ConsumeSignedInteger(int64* value, uint64 max_value) {
bool negative = false;
if (TryConsume("-")) {
negative = true;
// Two's complement always allows one more negative integer than
// positive.
++max_value;
}
uint64 unsigned_value;
DO(ConsumeUnsignedInteger(&unsigned_value, max_value));
if (negative) {
if ((static_cast<uint64>(kint64max) + 1) == unsigned_value) {
*value = kint64min;
} else {
*value = -static_cast<int64>(unsigned_value);
}
} else {
*value = static_cast<int64>(unsigned_value);
}
return true;
}
// Consumes a uint64 and saves its value in the value parameter.
// Accepts decimal numbers only, rejects hex or oct numbers.
bool ConsumeUnsignedDecimalInteger(uint64* value, uint64 max_value) {
if (!LookingAtType(io::Tokenizer::TYPE_INTEGER)) {
ReportError("Expected integer, got: " + tokenizer_.current().text);
return false;
}
const string& text = tokenizer_.current().text;
if (IsHexNumber(text) || IsOctNumber(text)) {
ReportError("Expect a decimal number, got: " + text);
return false;
}
if (!io::Tokenizer::ParseInteger(text, max_value, value)) {
ReportError("Integer out of range (" + text + ")");
return false;
}
tokenizer_.Next();
return true;
}
// Consumes a double and saves its value in the value parameter.
// Note that since the tokenizer does not support negative numbers,
// we actually may consume an additional token (for the minus sign) in this
// method. Returns false if the token is not a double
// (signed or otherwise).
bool ConsumeDouble(double* value) {
bool negative = false;
if (TryConsume("-")) {
negative = true;
}
// A double can actually be an integer, according to the tokenizer.
// Therefore, we must check both cases here.
if (LookingAtType(io::Tokenizer::TYPE_INTEGER)) {
// We have found an integer value for the double.
uint64 integer_value;
DO(ConsumeUnsignedDecimalInteger(&integer_value, kuint64max));
*value = static_cast<double>(integer_value);
} else if (LookingAtType(io::Tokenizer::TYPE_FLOAT)) {
// We have found a float value for the double.
*value = io::Tokenizer::ParseFloat(tokenizer_.current().text);
// Mark the current token as consumed.
tokenizer_.Next();
} else if (LookingAtType(io::Tokenizer::TYPE_IDENTIFIER)) {
string text = tokenizer_.current().text;
LowerString(&text);
if (text == "inf" ||
text == "infinity") {
*value = std::numeric_limits<double>::infinity();
tokenizer_.Next();
} else if (text == "nan") {
*value = std::numeric_limits<double>::quiet_NaN();
tokenizer_.Next();
} else {
ReportError("Expected double, got: " + text);
return false;
}
} else {
ReportError("Expected double, got: " + tokenizer_.current().text);
return false;
}
if (negative) {
*value = -*value;
}
return true;
}
// Consumes Any::type_url value, of form "type.googleapis.com/full.type.Name"
// or "type.googleprod.com/full.type.Name"
bool ConsumeAnyTypeUrl(string* full_type_name, string* prefix) {
// TODO(saito) Extend Consume() to consume multiple tokens at once, so that
// this code can be written as just DO(Consume(kGoogleApisTypePrefix)).
DO(ConsumeIdentifier(prefix));
while (TryConsume(".")) {
string url;
DO(ConsumeIdentifier(&url));
*prefix += "." + url;
}
DO(Consume("/"));
*prefix += "/";
DO(ConsumeFullTypeName(full_type_name));
return true;
}
// A helper function for reconstructing Any::value. Consumes a text of
// full_type_name, then serializes it into serialized_value.
bool ConsumeAnyValue(const Descriptor* value_descriptor,
string* serialized_value) {
DynamicMessageFactory factory;
const Message* value_prototype = factory.GetPrototype(value_descriptor);
if (value_prototype == NULL) {
return false;
}
std::unique_ptr<Message> value(value_prototype->New());
string sub_delimiter;
DO(ConsumeMessageDelimiter(&sub_delimiter));
DO(ConsumeMessage(value.get(), sub_delimiter));
if (allow_partial_) {
value->AppendPartialToString(serialized_value);
} else {
if (!value->IsInitialized()) {
ReportError(
"Value of type \"" + value_descriptor->full_name() +
"\" stored in google.protobuf.Any has missing required fields");
return false;
}
value->AppendToString(serialized_value);
}
return true;
}
// Consumes a token and confirms that it matches that specified in the
// value parameter. Returns false if the token found does not match that
// which was specified.
bool Consume(const string& value) {
const string& current_value = tokenizer_.current().text;
if (current_value != value) {
ReportError("Expected \"" + value + "\", found \"" + current_value
+ "\".");
return false;
}
tokenizer_.Next();
return true;
}
// Attempts to consume the supplied value. Returns false if a the
// token found does not match the value specified.
bool TryConsume(const string& value) {
if (tokenizer_.current().text == value) {
tokenizer_.Next();
return true;
} else {
return false;
}
}
// An internal instance of the Tokenizer's error collector, used to
// collect any base-level parse errors and feed them to the ParserImpl.
class ParserErrorCollector : public io::ErrorCollector {
public:
explicit ParserErrorCollector(TextFormat::Parser::ParserImpl* parser) :
parser_(parser) { }
virtual ~ParserErrorCollector() { }
virtual void AddError(int line, int column, const string& message) {
parser_->ReportError(line, column, message);
}
virtual void AddWarning(int line, int column, const string& message) {
parser_->ReportWarning(line, column, message);
}
private:
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ParserErrorCollector);
TextFormat::Parser::ParserImpl* parser_;
};
io::ErrorCollector* error_collector_;
const TextFormat::Finder* finder_;
ParseInfoTree* parse_info_tree_;
ParserErrorCollector tokenizer_error_collector_;
io::Tokenizer tokenizer_;
const Descriptor* root_message_type_;
SingularOverwritePolicy singular_overwrite_policy_;
const bool allow_case_insensitive_field_;
const bool allow_unknown_field_;
const bool allow_unknown_enum_;
const bool allow_field_number_;
const bool allow_partial_;
bool had_errors_;
};
#undef DO
// ===========================================================================
// Internal class for writing text to the io::ZeroCopyOutputStream. Adapted
// from the Printer found in //google/protobuf/io/printer.h
class TextFormat::Printer::TextGenerator
: public TextFormat::BaseTextGenerator {
public:
explicit TextGenerator(io::ZeroCopyOutputStream* output,
int initial_indent_level)
: output_(output),
buffer_(NULL),
buffer_size_(0),
at_start_of_line_(true),
failed_(false),
indent_level_(initial_indent_level),
initial_indent_level_(initial_indent_level) {
}
~TextGenerator() {
// Only BackUp() if we're sure we've successfully called Next() at least
// once.
if (!failed_ && buffer_size_ > 0) {
output_->BackUp(buffer_size_);
}
}
// Indent text by two spaces. After calling Indent(), two spaces will be
// inserted at the beginning of each line of text. Indent() may be called
// multiple times to produce deeper indents.
void Indent() override { ++indent_level_; }
// Reduces the current indent level by two spaces, or crashes if the indent
// level is zero.
void Outdent() override {
if (indent_level_ == 0 ||
indent_level_ < initial_indent_level_) {
GOOGLE_LOG(DFATAL) << " Outdent() without matching Indent().";
return;
}
--indent_level_;
}
// Print text to the output stream.
void Print(const char* text, size_t size) override {
if (indent_level_ > 0) {
size_t pos = 0; // The number of bytes we've written so far.
for (size_t i = 0; i < size; i++) {
if (text[i] == '\n') {
// Saw newline. If there is more text, we may need to insert an
// indent here. So, write what we have so far, including the '\n'.
Write(text + pos, i - pos + 1);
pos = i + 1;
// Setting this true will cause the next Write() to insert an indent
// first.
at_start_of_line_ = true;
}
}
// Write the rest.
Write(text + pos, size - pos);
} else {
Write(text, size);
if (size > 0 && text[size - 1] == '\n') {
at_start_of_line_ = true;
}
}
}
// True if any write to the underlying stream failed. (We don't just
// crash in this case because this is an I/O failure, not a programming
// error.)
bool failed() const { return failed_; }
private:
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(TextGenerator);
void Write(const char* data, size_t size) {
if (failed_) return;
if (size == 0) return;
if (at_start_of_line_) {
// Insert an indent.
at_start_of_line_ = false;
WriteIndent();
if (failed_) return;
}
while (size > buffer_size_) {
// Data exceeds space in the buffer. Copy what we can and request a
// new buffer.
if (buffer_size_ > 0) {
memcpy(buffer_, data, buffer_size_);
data += buffer_size_;
size -= buffer_size_;
}
void* void_buffer = NULL;
failed_ = !output_->Next(&void_buffer, &buffer_size_);
if (failed_) return;
buffer_ = reinterpret_cast<char*>(void_buffer);
}
// Buffer is big enough to receive the data; copy it.
memcpy(buffer_, data, size);
buffer_ += size;
buffer_size_ -= size;
}
void WriteIndent() {
if (indent_level_ == 0) { return; }
GOOGLE_DCHECK(!failed_);
int size = 2 * indent_level_;
while (size > buffer_size_) {
// Data exceeds space in the buffer. Write what we can and request a new
// buffer.
memset(buffer_, ' ', buffer_size_);
size -= buffer_size_;
void* void_buffer;
failed_ = !output_->Next(&void_buffer, &buffer_size_);
if (failed_) return;
buffer_ = reinterpret_cast<char*>(void_buffer);
}
// Buffer is big enough to receive the data; copy it.
memset(buffer_, ' ', size);
buffer_ += size;
buffer_size_ -= size;
}
io::ZeroCopyOutputStream* const output_;
char* buffer_;
int buffer_size_;
bool at_start_of_line_;
bool failed_;
int indent_level_;
int initial_indent_level_;
};
// ===========================================================================
// Implementation of the default Finder for extensions.
TextFormat::Finder::~Finder() {
}
const FieldDescriptor* TextFormat::Finder::FindExtension(
Message* message, const string& name) const {
return DefaultFinderFindExtension(message, name);
}
const Descriptor* TextFormat::Finder::FindAnyType(const Message& message,
const string& prefix,
const string& name) const {
return DefaultFinderFindAnyType(message, prefix, name);
}
// ===========================================================================
TextFormat::Parser::Parser()
: error_collector_(NULL),
finder_(NULL),
parse_info_tree_(NULL),
allow_partial_(false),
allow_case_insensitive_field_(false),
allow_unknown_field_(false),
allow_unknown_enum_(false),
allow_field_number_(false),
allow_relaxed_whitespace_(false),
allow_singular_overwrites_(false) {
}
TextFormat::Parser::~Parser() {}
bool TextFormat::Parser::Parse(io::ZeroCopyInputStream* input,
Message* output) {
output->Clear();
ParserImpl::SingularOverwritePolicy overwrites_policy =
allow_singular_overwrites_
? ParserImpl::ALLOW_SINGULAR_OVERWRITES
: ParserImpl::FORBID_SINGULAR_OVERWRITES;
ParserImpl parser(output->GetDescriptor(), input, error_collector_,
finder_, parse_info_tree_,
overwrites_policy,
allow_case_insensitive_field_, allow_unknown_field_,
allow_unknown_enum_, allow_field_number_,
allow_relaxed_whitespace_, allow_partial_);
return MergeUsingImpl(input, output, &parser);
}
bool TextFormat::Parser::ParseFromString(const string& input,
Message* output) {
io::ArrayInputStream input_stream(input.data(), input.size());
return Parse(&input_stream, output);
}
bool TextFormat::Parser::Merge(io::ZeroCopyInputStream* input,
Message* output) {
ParserImpl parser(output->GetDescriptor(), input, error_collector_,
finder_, parse_info_tree_,
ParserImpl::ALLOW_SINGULAR_OVERWRITES,
allow_case_insensitive_field_, allow_unknown_field_,
allow_unknown_enum_, allow_field_number_,
allow_relaxed_whitespace_, allow_partial_);
return MergeUsingImpl(input, output, &parser);
}
bool TextFormat::Parser::MergeFromString(const string& input,
Message* output) {
io::ArrayInputStream input_stream(input.data(), input.size());
return Merge(&input_stream, output);
}
bool TextFormat::Parser::MergeUsingImpl(io::ZeroCopyInputStream* /* input */,
Message* output,
ParserImpl* parser_impl) {
if (!parser_impl->Parse(output)) return false;
if (!allow_partial_ && !output->IsInitialized()) {
std::vector<string> missing_fields;
output->FindInitializationErrors(&missing_fields);
parser_impl->ReportError(-1, 0,
"Message missing required fields: " +
Join(missing_fields, ", "));
return false;
}
return true;
}
bool TextFormat::Parser::ParseFieldValueFromString(
const string& input,
const FieldDescriptor* field,
Message* output) {
io::ArrayInputStream input_stream(input.data(), input.size());
ParserImpl parser(output->GetDescriptor(), &input_stream, error_collector_,
finder_, parse_info_tree_,
ParserImpl::ALLOW_SINGULAR_OVERWRITES,
allow_case_insensitive_field_, allow_unknown_field_,
allow_unknown_enum_, allow_field_number_,
allow_relaxed_whitespace_, allow_partial_);
return parser.ParseField(field, output);
}
/* static */ bool TextFormat::Parse(io::ZeroCopyInputStream* input,
Message* output) {
return Parser().Parse(input, output);
}
/* static */ bool TextFormat::Merge(io::ZeroCopyInputStream* input,
Message* output) {
return Parser().Merge(input, output);
}
/* static */ bool TextFormat::ParseFromString(const string& input,
Message* output) {
return Parser().ParseFromString(input, output);
}
/* static */ bool TextFormat::MergeFromString(const string& input,
Message* output) {
return Parser().MergeFromString(input, output);
}
// ===========================================================================
TextFormat::BaseTextGenerator::~BaseTextGenerator() {}
namespace {
// A BaseTextGenerator that writes to a string.
class StringBaseTextGenerator : public TextFormat::BaseTextGenerator {
public:
void Print(const char* text, size_t size) { output_.append(text, size); }
// Some compilers do not support ref-qualifiers even in C++11 mode.
// Disable the optimization for now and revisit it later.
#if 0 // LANG_CXX11
string Consume() && { return std::move(output_); }
#else // !LANG_CXX11
const string& Get() { return output_; }
#endif // LANG_CXX11
private:
string output_;
};
} // namespace
// The default implementation for FieldValuePrinter. We just delegate the
// implementation to the default FastFieldValuePrinter to avoid duplicating the
// logic.
TextFormat::FieldValuePrinter::FieldValuePrinter() {}
TextFormat::FieldValuePrinter::~FieldValuePrinter() {}
#if 0 // LANG_CXX11
#define FORWARD_IMPL(fn, ...) \
StringBaseTextGenerator generator; \
delegate_.fn(__VA_ARGS__, &generator); \
return std::move(generator).Consume()
#else // !LANG_CXX11
#define FORWARD_IMPL(fn, ...) \
StringBaseTextGenerator generator; \
delegate_.fn(__VA_ARGS__, &generator); \
return generator.Get()
#endif // LANG_CXX11
string TextFormat::FieldValuePrinter::PrintBool(bool val) const {
FORWARD_IMPL(PrintBool, val);
}
string TextFormat::FieldValuePrinter::PrintInt32(int32 val) const {
FORWARD_IMPL(PrintInt32, val);
}
string TextFormat::FieldValuePrinter::PrintUInt32(uint32 val) const {
FORWARD_IMPL(PrintUInt32, val);
}
string TextFormat::FieldValuePrinter::PrintInt64(int64 val) const {
FORWARD_IMPL(PrintInt64, val);
}
string TextFormat::FieldValuePrinter::PrintUInt64(uint64 val) const {
FORWARD_IMPL(PrintUInt64, val);
}
string TextFormat::FieldValuePrinter::PrintFloat(float val) const {
FORWARD_IMPL(PrintFloat, val);
}
string TextFormat::FieldValuePrinter::PrintDouble(double val) const {
FORWARD_IMPL(PrintDouble, val);
}
string TextFormat::FieldValuePrinter::PrintString(const string& val) const {
FORWARD_IMPL(PrintString, val);
}
string TextFormat::FieldValuePrinter::PrintBytes(const string& val) const {
return PrintString(val);
}
string TextFormat::FieldValuePrinter::PrintEnum(int32 val,
const string& name) const {
FORWARD_IMPL(PrintEnum, val, name);
}
string TextFormat::FieldValuePrinter::PrintFieldName(
const Message& message,
const Reflection* reflection,
const FieldDescriptor* field) const {
FORWARD_IMPL(PrintFieldName, message, reflection, field);
}
string TextFormat::FieldValuePrinter::PrintMessageStart(
const Message& message,
int field_index,
int field_count,
bool single_line_mode) const {
FORWARD_IMPL(PrintMessageStart, message, field_index, field_count,
single_line_mode);
}
string TextFormat::FieldValuePrinter::PrintMessageEnd(
const Message& message,
int field_index,
int field_count,
bool single_line_mode) const {
FORWARD_IMPL(PrintMessageEnd, message, field_index, field_count,
single_line_mode);
}
#undef FORWARD_IMPL
TextFormat::FastFieldValuePrinter::FastFieldValuePrinter() {}
TextFormat::FastFieldValuePrinter::~FastFieldValuePrinter() {}
void TextFormat::FastFieldValuePrinter::PrintBool(
bool val, BaseTextGenerator* generator) const {
if (val) {
generator->PrintLiteral("true");
} else {
generator->PrintLiteral("false");
}
}
void TextFormat::FastFieldValuePrinter::PrintInt32(
int32 val, BaseTextGenerator* generator) const {
generator->PrintString(SimpleItoa(val));
}
void TextFormat::FastFieldValuePrinter::PrintUInt32(
uint32 val, BaseTextGenerator* generator) const {
generator->PrintString(SimpleItoa(val));
}
void TextFormat::FastFieldValuePrinter::PrintInt64(
int64 val, BaseTextGenerator* generator) const {
generator->PrintString(SimpleItoa(val));
}
void TextFormat::FastFieldValuePrinter::PrintUInt64(
uint64 val, BaseTextGenerator* generator) const {
generator->PrintString(SimpleItoa(val));
}
void TextFormat::FastFieldValuePrinter::PrintFloat(
float val, BaseTextGenerator* generator) const {
generator->PrintString(SimpleFtoa(val));
}
void TextFormat::FastFieldValuePrinter::PrintDouble(
double val, BaseTextGenerator* generator) const {
generator->PrintString(SimpleDtoa(val));
}
void TextFormat::FastFieldValuePrinter::PrintEnum(
int32 val, const string& name, BaseTextGenerator* generator) const {
generator->PrintString(name);
}
void TextFormat::FastFieldValuePrinter::PrintString(
const string& val, BaseTextGenerator* generator) const {
generator->PrintLiteral("\"");
generator->PrintString(CEscape(val));
generator->PrintLiteral("\"");
}
void TextFormat::FastFieldValuePrinter::PrintBytes(
const string& val, BaseTextGenerator* generator) const {
PrintString(val, generator);
}
void TextFormat::FastFieldValuePrinter::PrintFieldName(
const Message& message, int field_index, int field_count,
const Reflection* reflection, const FieldDescriptor* field,
BaseTextGenerator* generator) const {
PrintFieldName(message, reflection, field, generator);
}
void TextFormat::FastFieldValuePrinter::PrintFieldName(
const Message& message, const Reflection* reflection,
const FieldDescriptor* field, BaseTextGenerator* generator) const {
if (field->is_extension()) {
generator->PrintLiteral("[");
// We special-case MessageSet elements for compatibility with proto1.
if (field->containing_type()->options().message_set_wire_format() &&
field->type() == FieldDescriptor::TYPE_MESSAGE &&
field->is_optional() &&
field->extension_scope() == field->message_type()) {
generator->PrintString(field->message_type()->full_name());
} else {
generator->PrintString(field->full_name());
}
generator->PrintLiteral("]");
} else if (field->type() == FieldDescriptor::TYPE_GROUP) {
// Groups must be serialized with their original capitalization.
generator->PrintString(field->message_type()->name());
} else {
generator->PrintString(field->name());
}
}
void TextFormat::FastFieldValuePrinter::PrintMessageStart(
const Message& message, int field_index, int field_count,
bool single_line_mode, BaseTextGenerator* generator) const {
if (single_line_mode) {
generator->PrintLiteral(" { ");
} else {
generator->PrintLiteral(" {\n");
}
}
void TextFormat::FastFieldValuePrinter::PrintMessageEnd(
const Message& message, int field_index, int field_count,
bool single_line_mode, BaseTextGenerator* generator) const {
if (single_line_mode) {
generator->PrintLiteral("} ");
} else {
generator->PrintLiteral("}\n");
}
}
namespace {
// A legacy compatibility wrapper. Takes ownership of the delegate.
class FieldValuePrinterWrapper : public TextFormat::FastFieldValuePrinter {
public:
explicit FieldValuePrinterWrapper(
const TextFormat::FieldValuePrinter* delegate)
: delegate_(delegate) {}
void SetDelegate(const TextFormat::FieldValuePrinter* delegate) {
delegate_.reset(delegate);
}
void PrintBool(bool val, TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintBool(val));
}
void PrintInt32(int32 val, TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintInt32(val));
}
void PrintUInt32(uint32 val, TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintUInt32(val));
}
void PrintInt64(int64 val, TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintInt64(val));
}
void PrintUInt64(uint64 val, TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintUInt64(val));
}
void PrintFloat(float val, TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintFloat(val));
}
void PrintDouble(double val, TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintDouble(val));
}
void PrintString(const string& val,
TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintString(val));
}
void PrintBytes(const string& val,
TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintBytes(val));
}
void PrintEnum(int32 val, const string& name,
TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintEnum(val, name));
}
void PrintFieldName(const Message& message, int field_index, int field_count,
const Reflection* reflection,
const FieldDescriptor* field,
TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintFieldName(
message, reflection, field));
}
void PrintFieldName(const Message& message, const Reflection* reflection,
const FieldDescriptor* field,
TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(
delegate_->PrintFieldName(message, reflection, field));
}
void PrintMessageStart(const Message& message, int field_index,
int field_count, bool single_line_mode,
TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintMessageStart(
message, field_index, field_count, single_line_mode));
}
void PrintMessageEnd(const Message& message, int field_index, int field_count,
bool single_line_mode,
TextFormat::BaseTextGenerator* generator) const {
generator->PrintString(delegate_->PrintMessageEnd(
message, field_index, field_count, single_line_mode));
}
private:
std::unique_ptr<const TextFormat::FieldValuePrinter> delegate_;
};
// Our own specialization: for UTF8 escaped strings.
class FastFieldValuePrinterUtf8Escaping
: public TextFormat::FastFieldValuePrinter {
public:
void PrintString(const string& val,
TextFormat::BaseTextGenerator* generator) const {
generator->PrintLiteral("\"");
generator->PrintString(strings::Utf8SafeCEscape(val));
generator->PrintLiteral("\"");
}
void PrintBytes(const string& val,
TextFormat::BaseTextGenerator* generator) const {
return FastFieldValuePrinter::PrintString(val, generator);
}
};
} // namespace
TextFormat::Printer::Printer()
: initial_indent_level_(0),
single_line_mode_(false),
use_field_number_(false),
use_short_repeated_primitives_(false),
hide_unknown_fields_(false),
print_message_fields_in_index_order_(false),
expand_any_(false),
truncate_string_field_longer_than_(0LL),
finder_(NULL) {
SetUseUtf8StringEscaping(false);
}
TextFormat::Printer::~Printer() {
STLDeleteValues(&custom_printers_);
STLDeleteValues(&custom_message_printers_);
}
void TextFormat::Printer::SetUseUtf8StringEscaping(bool as_utf8) {
SetDefaultFieldValuePrinter(as_utf8 ? new FastFieldValuePrinterUtf8Escaping()
: new FastFieldValuePrinter());
}
void TextFormat::Printer::SetDefaultFieldValuePrinter(
const FieldValuePrinter* printer) {
default_field_value_printer_.reset(new FieldValuePrinterWrapper(printer));
}
void TextFormat::Printer::SetDefaultFieldValuePrinter(
const FastFieldValuePrinter* printer) {
default_field_value_printer_.reset(printer);
}
bool TextFormat::Printer::RegisterFieldValuePrinter(
const FieldDescriptor* field,
const FieldValuePrinter* printer) {
if (field == NULL || printer == NULL) {
return false;
}
FieldValuePrinterWrapper* const wrapper =
new FieldValuePrinterWrapper(nullptr);
if (custom_printers_.insert(std::make_pair(field, wrapper)).second) {
wrapper->SetDelegate(printer);
return true;
} else {
delete wrapper;
return false;
}
}
bool TextFormat::Printer::RegisterFieldValuePrinter(
const FieldDescriptor* field, const FastFieldValuePrinter* printer) {
return field != NULL && printer != NULL &&
custom_printers_.insert(std::make_pair(field, printer)).second;
}
bool TextFormat::Printer::RegisterMessagePrinter(
const Descriptor* descriptor, const MessagePrinter* printer) {
return descriptor != nullptr && printer != nullptr &&
custom_message_printers_.insert(std::make_pair(descriptor, printer))
.second;
}
bool TextFormat::Printer::PrintToString(const Message& message,
string* output) const {
GOOGLE_DCHECK(output) << "output specified is NULL";
output->clear();
io::StringOutputStream output_stream(output);
return Print(message, &output_stream);
}
bool TextFormat::Printer::PrintUnknownFieldsToString(
const UnknownFieldSet& unknown_fields,
string* output) const {
GOOGLE_DCHECK(output) << "output specified is NULL";
output->clear();
io::StringOutputStream output_stream(output);
return PrintUnknownFields(unknown_fields, &output_stream);
}
bool TextFormat::Printer::Print(const Message& message,
io::ZeroCopyOutputStream* output) const {
TextGenerator generator(output, initial_indent_level_);
Print(message, &generator);
// Output false if the generator failed internally.
return !generator.failed();
}
bool TextFormat::Printer::PrintUnknownFields(
const UnknownFieldSet& unknown_fields,
io::ZeroCopyOutputStream* output) const {
TextGenerator generator(output, initial_indent_level_);
PrintUnknownFields(unknown_fields, &generator);
// Output false if the generator failed internally.
return !generator.failed();
}
namespace {
// Comparison functor for sorting FieldDescriptors by field index.
// Normal fields have higher precedence than extensions.
struct FieldIndexSorter {
bool operator()(const FieldDescriptor* left,
const FieldDescriptor* right) const {
if (left->is_extension() && right->is_extension()) {
return left->number() < right->number();
} else if (left->is_extension()) {
return false;
} else if (right->is_extension()) {
return true;
} else {
return left->index() < right->index();
}
}
};
} // namespace
bool TextFormat::Printer::PrintAny(const Message& message,
TextGenerator* generator) const {
const FieldDescriptor* type_url_field;
const FieldDescriptor* value_field;
if (!internal::GetAnyFieldDescriptors(message, &type_url_field,
&value_field)) {
return false;
}
const Reflection* reflection = message.GetReflection();
// Extract the full type name from the type_url field.
const string& type_url = reflection->GetString(message, type_url_field);
string url_prefix;
string full_type_name;
if (!internal::ParseAnyTypeUrl(type_url, &url_prefix, &full_type_name)) {
return false;
}
// Print the "value" in text.
const google::protobuf::Descriptor* value_descriptor =
finder_ ? finder_->FindAnyType(message, url_prefix, full_type_name)
: DefaultFinderFindAnyType(message, url_prefix, full_type_name);
if (value_descriptor == NULL) {
GOOGLE_LOG(WARNING) << "Proto type " << type_url << " not found";
return false;
}
DynamicMessageFactory factory;
std::unique_ptr<google::protobuf::Message> value_message(
factory.GetPrototype(value_descriptor)->New());
string serialized_value = reflection->GetString(message, value_field);
if (!value_message->ParseFromString(serialized_value)) {
GOOGLE_LOG(WARNING) << type_url << ": failed to parse contents";
return false;
}
generator->PrintLiteral("[");
generator->PrintString(type_url);
generator->PrintLiteral("]");
const FastFieldValuePrinter* printer = FindWithDefault(
custom_printers_, value_field, default_field_value_printer_.get());
printer->PrintMessageStart(message, -1, 0, single_line_mode_, generator);
generator->Indent();
Print(*value_message, generator);
generator->Outdent();
printer->PrintMessageEnd(message, -1, 0, single_line_mode_, generator);
return true;
}
void TextFormat::Printer::Print(const Message& message,
TextGenerator* generator) const {
const Descriptor* descriptor = message.GetDescriptor();
auto itr = custom_message_printers_.find(descriptor);
if (itr != custom_message_printers_.end()) {
itr->second->Print(message, single_line_mode_, generator);
return;
}
const Reflection* reflection = message.GetReflection();
if (descriptor->full_name() == internal::kAnyFullTypeName && expand_any_ &&
PrintAny(message, generator)) {
return;
}
std::vector<const FieldDescriptor*> fields;
reflection->ListFields(message, &fields);
if (print_message_fields_in_index_order_) {
std::sort(fields.begin(), fields.end(), FieldIndexSorter());
}
for (int i = 0; i < fields.size(); i++) {
PrintField(message, reflection, fields[i], generator);
}
if (!hide_unknown_fields_) {
PrintUnknownFields(reflection->GetUnknownFields(message), generator);
}
}
void TextFormat::Printer::PrintFieldValueToString(
const Message& message,
const FieldDescriptor* field,
int index,
string* output) const {
GOOGLE_DCHECK(output) << "output specified is NULL";
output->clear();
io::StringOutputStream output_stream(output);
TextGenerator generator(&output_stream, initial_indent_level_);
PrintFieldValue(message, message.GetReflection(), field, index, &generator);
}
void TextFormat::Printer::PrintField(const Message& message,
const Reflection* reflection,
const FieldDescriptor* field,
TextGenerator* generator) const {
if (use_short_repeated_primitives_ &&
field->is_repeated() &&
field->cpp_type() != FieldDescriptor::CPPTYPE_STRING &&
field->cpp_type() != FieldDescriptor::CPPTYPE_MESSAGE) {
PrintShortRepeatedField(message, reflection, field, generator);
return;
}
int count = 0;
if (field->is_repeated()) {
count = reflection->FieldSize(message, field);
} else if (reflection->HasField(message, field)) {
count = 1;
}
std::vector<const Message*> map_entries;
const bool is_map = field->is_map();
if (is_map) {
map_entries = DynamicMapSorter::Sort(message, count, reflection, field);
}
for (int j = 0; j < count; ++j) {
const int field_index = field->is_repeated() ? j : -1;
PrintFieldName(message, field_index, count, reflection, field, generator);
if (field->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
const FastFieldValuePrinter* printer = FindWithDefault(
custom_printers_, field, default_field_value_printer_.get());
const Message& sub_message =
field->is_repeated()
? (is_map ? *map_entries[j]
: reflection->GetRepeatedMessage(message, field, j))
: reflection->GetMessage(message, field);
printer->PrintMessageStart(sub_message, field_index, count,
single_line_mode_, generator);
generator->Indent();
Print(sub_message, generator);
generator->Outdent();
printer->PrintMessageEnd(sub_message, field_index, count,
single_line_mode_, generator);
} else {
generator->PrintLiteral(": ");
// Write the field value.
PrintFieldValue(message, reflection, field, field_index, generator);
if (single_line_mode_) {
generator->PrintLiteral(" ");
} else {
generator->PrintLiteral("\n");
}
}
}
}
void TextFormat::Printer::PrintShortRepeatedField(
const Message& message, const Reflection* reflection,
const FieldDescriptor* field, TextGenerator* generator) const {
// Print primitive repeated field in short form.
int size = reflection->FieldSize(message, field);
PrintFieldName(message, /*field_index=*/-1, /*field_count=*/size, reflection,
field, generator);
generator->PrintLiteral(": [");
for (int i = 0; i < size; i++) {
if (i > 0) generator->PrintLiteral(", ");
PrintFieldValue(message, reflection, field, i, generator);
}
if (single_line_mode_) {
generator->PrintLiteral("] ");
} else {
generator->PrintLiteral("]\n");
}
}
void TextFormat::Printer::PrintFieldName(const Message& message,
int field_index, int field_count,
const Reflection* reflection,
const FieldDescriptor* field,
TextGenerator* generator) const {
// if use_field_number_ is true, prints field number instead
// of field name.
if (use_field_number_) {
generator->PrintString(SimpleItoa(field->number()));
return;
}
const FastFieldValuePrinter* printer = FindWithDefault(
custom_printers_, field, default_field_value_printer_.get());
printer->PrintFieldName(message, field_index, field_count, reflection, field,
generator);
}
void TextFormat::Printer::PrintFieldValue(const Message& message,
const Reflection* reflection,
const FieldDescriptor* field,
int index,
TextGenerator* generator) const {
GOOGLE_DCHECK(field->is_repeated() || (index == -1))
<< "Index must be -1 for non-repeated fields";
const FastFieldValuePrinter* printer = FindWithDefault(
custom_printers_, field, default_field_value_printer_.get());
switch (field->cpp_type()) {
#define OUTPUT_FIELD(CPPTYPE, METHOD) \
case FieldDescriptor::CPPTYPE_##CPPTYPE: \
printer->Print##METHOD( \
field->is_repeated() \
? reflection->GetRepeated##METHOD(message, field, index) \
: reflection->Get##METHOD(message, field), \
generator); \
break
OUTPUT_FIELD( INT32, Int32);
OUTPUT_FIELD( INT64, Int64);
OUTPUT_FIELD(UINT32, UInt32);
OUTPUT_FIELD(UINT64, UInt64);
OUTPUT_FIELD( FLOAT, Float);
OUTPUT_FIELD(DOUBLE, Double);
OUTPUT_FIELD( BOOL, Bool);
#undef OUTPUT_FIELD
case FieldDescriptor::CPPTYPE_STRING: {
string scratch;
const string& value = field->is_repeated()
? reflection->GetRepeatedStringReference(
message, field, index, &scratch)
: reflection->GetStringReference(message, field, &scratch);
const string* value_to_print = &value;
string truncated_value;
if (truncate_string_field_longer_than_ > 0 &&
truncate_string_field_longer_than_ < value.size()) {
truncated_value = value.substr(0, truncate_string_field_longer_than_) +
"...<truncated>...";
value_to_print = &truncated_value;
}
if (field->type() == FieldDescriptor::TYPE_STRING) {
printer->PrintString(*value_to_print, generator);
} else {
GOOGLE_DCHECK_EQ(field->type(), FieldDescriptor::TYPE_BYTES);
printer->PrintBytes(*value_to_print, generator);
}
break;
}
case FieldDescriptor::CPPTYPE_ENUM: {
int enum_value = field->is_repeated()
? reflection->GetRepeatedEnumValue(message, field, index)
: reflection->GetEnumValue(message, field);
const EnumValueDescriptor* enum_desc =
field->enum_type()->FindValueByNumber(enum_value);
if (enum_desc != NULL) {
printer->PrintEnum(enum_value, enum_desc->name(), generator);
} else {
// Ordinarily, enum_desc should not be null, because proto2 has the
// invariant that set enum field values must be in-range, but with the
// new integer-based API for enums (or the RepeatedField<int> loophole),
// it is possible for the user to force an unknown integer value. So we
// simply use the integer value itself as the enum value name in this
// case.
printer->PrintEnum(enum_value, StringPrintf("%d", enum_value),
generator);
}
break;
}
case FieldDescriptor::CPPTYPE_MESSAGE:
Print(field->is_repeated()
? reflection->GetRepeatedMessage(message, field, index)
: reflection->GetMessage(message, field),
generator);
break;
}
}
/* static */ bool TextFormat::Print(const Message& message,
io::ZeroCopyOutputStream* output) {
return Printer().Print(message, output);
}
/* static */ bool TextFormat::PrintUnknownFields(
const UnknownFieldSet& unknown_fields,
io::ZeroCopyOutputStream* output) {
return Printer().PrintUnknownFields(unknown_fields, output);
}
/* static */ bool TextFormat::PrintToString(
const Message& message, string* output) {
return Printer().PrintToString(message, output);
}
/* static */ bool TextFormat::PrintUnknownFieldsToString(
const UnknownFieldSet& unknown_fields, string* output) {
return Printer().PrintUnknownFieldsToString(unknown_fields, output);
}
/* static */ void TextFormat::PrintFieldValueToString(
const Message& message,
const FieldDescriptor* field,
int index,
string* output) {
return Printer().PrintFieldValueToString(message, field, index, output);
}
/* static */ bool TextFormat::ParseFieldValueFromString(
const string& input,
const FieldDescriptor* field,
Message* message) {
return Parser().ParseFieldValueFromString(input, field, message);
}
// Prints an integer as hex with a fixed number of digits dependent on the
// integer type.
template<typename IntType>
static string PaddedHex(IntType value) {
string result;
result.reserve(sizeof(value) * 2);
for (int i = sizeof(value) * 2 - 1; i >= 0; i--) {
result.push_back(int_to_hex_digit(value >> (i*4) & 0x0F));
}
return result;
}
void TextFormat::Printer::PrintUnknownFields(
const UnknownFieldSet& unknown_fields, TextGenerator* generator) const {
for (int i = 0; i < unknown_fields.field_count(); i++) {
const UnknownField& field = unknown_fields.field(i);
string field_number = SimpleItoa(field.number());
switch (field.type()) {
case UnknownField::TYPE_VARINT:
generator->PrintString(field_number);
generator->PrintLiteral(": ");
generator->PrintString(SimpleItoa(field.varint()));
if (single_line_mode_) {
generator->PrintLiteral(" ");
} else {
generator->PrintLiteral("\n");
}
break;
case UnknownField::TYPE_FIXED32: {
generator->PrintString(field_number);
generator->PrintLiteral(": 0x");
generator->PrintString(
StrCat(strings::Hex(field.fixed32(), strings::ZERO_PAD_8)));
if (single_line_mode_) {
generator->PrintLiteral(" ");
} else {
generator->PrintLiteral("\n");
}
break;
}
case UnknownField::TYPE_FIXED64: {
generator->PrintString(field_number);
generator->PrintLiteral(": 0x");
generator->PrintString(
StrCat(strings::Hex(field.fixed64(), strings::ZERO_PAD_16)));
if (single_line_mode_) {
generator->PrintLiteral(" ");
} else {
generator->PrintLiteral("\n");
}
break;
}
case UnknownField::TYPE_LENGTH_DELIMITED: {
generator->PrintString(field_number);
const string& value = field.length_delimited();
UnknownFieldSet embedded_unknown_fields;
if (!value.empty() && embedded_unknown_fields.ParseFromString(value)) {
// This field is parseable as a Message.
// So it is probably an embedded message.
if (single_line_mode_) {
generator->PrintLiteral(" { ");
} else {
generator->PrintLiteral(" {\n");
generator->Indent();
}
PrintUnknownFields(embedded_unknown_fields, generator);
if (single_line_mode_) {
generator->PrintLiteral("} ");
} else {
generator->Outdent();
generator->PrintLiteral("}\n");
}
} else {
// This field is not parseable as a Message.
// So it is probably just a plain string.
generator->PrintLiteral(": \"");
generator->PrintString(CEscape(value));
if (single_line_mode_) {
generator->PrintLiteral("\" ");
} else {
generator->PrintLiteral("\"\n");
}
}
break;
}
case UnknownField::TYPE_GROUP:
generator->PrintString(field_number);
if (single_line_mode_) {
generator->PrintLiteral(" { ");
} else {
generator->PrintLiteral(" {\n");
generator->Indent();
}
PrintUnknownFields(field.group(), generator);
if (single_line_mode_) {
generator->PrintLiteral("} ");
} else {
generator->Outdent();
generator->PrintLiteral("}\n");
}
break;
}
}
}
} // namespace protobuf
} // namespace google
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