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Unified Diff: third_party/protobuf/src/google/protobuf/compiler/parser.cc

Issue 1842653006: Update //third_party/protobuf to version 3. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: merge Created 4 years, 8 months ago
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Index: third_party/protobuf/src/google/protobuf/compiler/parser.cc
diff --git a/third_party/protobuf/src/google/protobuf/compiler/parser.cc b/third_party/protobuf/src/google/protobuf/compiler/parser.cc
index 23aa01ced01e7cdb210bf0d037e83a0048b8d1e8..ea792a9d8cba6150ddb8937dfd1920d6e333166a 100644
--- a/third_party/protobuf/src/google/protobuf/compiler/parser.cc
+++ b/third_party/protobuf/src/google/protobuf/compiler/parser.cc
@@ -1,6 +1,6 @@
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
-// http://code.google.com/p/protobuf/
+// 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
@@ -44,9 +44,10 @@
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/wire_format.h>
#include <google/protobuf/io/tokenizer.h>
+#include <google/protobuf/stubs/logging.h>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/stubs/strutil.h>
-#include <google/protobuf/stubs/map-util.h>
+#include <google/protobuf/stubs/map_util.h>
namespace google {
namespace protobuf {
@@ -84,6 +85,32 @@ TypeNameMap MakeTypeNameTable() {
const TypeNameMap kTypeNames = MakeTypeNameTable();
+// Camel-case the field name and append "Entry" for generated map entry name.
+// e.g. map<KeyType, ValueType> foo_map => FooMapEntry
+string MapEntryName(const string& field_name) {
+ string result;
+ static const char kSuffix[] = "Entry";
+ result.reserve(field_name.size() + sizeof(kSuffix));
+ bool cap_next = true;
+ for (int i = 0; i < field_name.size(); ++i) {
+ if (field_name[i] == '_') {
+ cap_next = true;
+ } else if (cap_next) {
+ // Note: Do not use ctype.h due to locales.
+ if ('a' <= field_name[i] && field_name[i] <= 'z') {
+ result.push_back(field_name[i] - 'a' + 'A');
+ } else {
+ result.push_back(field_name[i]);
+ }
+ cap_next = false;
+ } else {
+ result.push_back(field_name[i]);
+ }
+ }
+ result.append(kSuffix);
+ return result;
+}
+
} // anonymous namespace
// Makes code slightly more readable. The meaning of "DO(foo)" is
@@ -251,27 +278,39 @@ bool Parser::ConsumeString(string* output, const char* error) {
}
}
-bool Parser::TryConsumeEndOfDeclaration(const char* text,
- const LocationRecorder* location) {
+bool Parser::TryConsumeEndOfDeclaration(
+ const char* text, const LocationRecorder* location) {
if (LookingAt(text)) {
string leading, trailing;
- input_->NextWithComments(&trailing, NULL, &leading);
+ vector<string> detached;
+ input_->NextWithComments(&trailing, &detached, &leading);
// Save the leading comments for next time, and recall the leading comments
// from last time.
leading.swap(upcoming_doc_comments_);
if (location != NULL) {
- location->AttachComments(&leading, &trailing);
+ upcoming_detached_comments_.swap(detached);
+ location->AttachComments(&leading, &trailing, &detached);
+ } else if (strcmp(text, "}") == 0) {
+ // If the current location is null and we are finishing the current scope,
+ // drop pending upcoming detached comments.
+ upcoming_detached_comments_.swap(detached);
+ } else {
+ // Otherwise, append the new detached comments to the existing upcoming
+ // detached comments.
+ upcoming_detached_comments_.insert(upcoming_detached_comments_.end(),
+ detached.begin(), detached.end());
}
+
return true;
} else {
return false;
}
}
-bool Parser::ConsumeEndOfDeclaration(const char* text,
- const LocationRecorder* location) {
+bool Parser::ConsumeEndOfDeclaration(
+ const char* text, const LocationRecorder* location) {
if (TryConsumeEndOfDeclaration(text, location)) {
return true;
} else {
@@ -343,6 +382,11 @@ void Parser::LocationRecorder::StartAt(const io::Tokenizer::Token& token) {
location_->set_span(1, token.column);
}
+void Parser::LocationRecorder::StartAt(const LocationRecorder& other) {
+ location_->set_span(0, other.location_->span(0));
+ location_->set_span(1, other.location_->span(1));
+}
+
void Parser::LocationRecorder::EndAt(const io::Tokenizer::Token& token) {
if (token.line != location_->span(0)) {
location_->add_span(token.line);
@@ -359,7 +403,8 @@ void Parser::LocationRecorder::RecordLegacyLocation(const Message* descriptor,
}
void Parser::LocationRecorder::AttachComments(
- string* leading, string* trailing) const {
+ string* leading, string* trailing,
+ vector<string>* detached_comments) const {
GOOGLE_CHECK(!location_->has_leading_comments());
GOOGLE_CHECK(!location_->has_trailing_comments());
@@ -369,6 +414,11 @@ void Parser::LocationRecorder::AttachComments(
if (!trailing->empty()) {
location_->mutable_trailing_comments()->swap(*trailing);
}
+ for (int i = 0; i < detached_comments->size(); ++i) {
+ location_->add_leading_detached_comments()->swap(
+ (*detached_comments)[i]);
+ }
+ detached_comments->clear();
}
// -------------------------------------------------------------------
@@ -408,6 +458,61 @@ void Parser::SkipRestOfBlock() {
// ===================================================================
+bool Parser::ValidateEnum(const EnumDescriptorProto* proto) {
+ bool has_allow_alias = false;
+ bool allow_alias = false;
+
+ for (int i = 0; i < proto->options().uninterpreted_option_size(); i++) {
+ const UninterpretedOption option = proto->options().uninterpreted_option(i);
+ if (option.name_size() > 1) {
+ continue;
+ }
+ if (!option.name(0).is_extension() &&
+ option.name(0).name_part() == "allow_alias") {
+ has_allow_alias = true;
+ if (option.identifier_value() == "true") {
+ allow_alias = true;
+ }
+ break;
+ }
+ }
+
+ if (has_allow_alias && !allow_alias) {
+ string error =
+ "\"" + proto->name() +
+ "\" declares 'option allow_alias = false;' which has no effect. "
+ "Please remove the declaration.";
+ // This needlessly clutters declarations with nops.
+ AddError(error);
+ return false;
+ }
+
+ set<int> used_values;
+ bool has_duplicates = false;
+ for (int i = 0; i < proto->value_size(); ++i) {
+ const EnumValueDescriptorProto enum_value = proto->value(i);
+ if (used_values.find(enum_value.number()) != used_values.end()) {
+ has_duplicates = true;
+ break;
+ } else {
+ used_values.insert(enum_value.number());
+ }
+ }
+ if (allow_alias && !has_duplicates) {
+ string error =
+ "\"" + proto->name() +
+ "\" declares support for enum aliases but no enum values share field "
+ "numbers. Please remove the unnecessary 'option allow_alias = true;' "
+ "declaration.";
+ // Generate an error if an enum declares support for duplicate enum values
+ // and does not use it protect future authors.
+ AddError(error);
+ return false;
+ }
+
+ return true;
+}
+
bool Parser::Parse(io::Tokenizer* input, FileDescriptorProto* file) {
input_ = input;
had_errors_ = false;
@@ -420,21 +525,29 @@ bool Parser::Parse(io::Tokenizer* input, FileDescriptorProto* file) {
SourceCodeInfo source_code_info;
source_code_info_ = &source_code_info;
+ vector<string> top_doc_comments;
if (LookingAtType(io::Tokenizer::TYPE_START)) {
// Advance to first token.
- input_->NextWithComments(NULL, NULL, &upcoming_doc_comments_);
+ input_->NextWithComments(NULL, &upcoming_detached_comments_,
+ &upcoming_doc_comments_);
}
{
LocationRecorder root_location(this);
if (require_syntax_identifier_ || LookingAt("syntax")) {
- if (!ParseSyntaxIdentifier()) {
+ if (!ParseSyntaxIdentifier(root_location)) {
// Don't attempt to parse the file if we didn't recognize the syntax
// identifier.
return false;
}
+ // Store the syntax into the file.
+ if (file != NULL) file->set_syntax(syntax_identifier_);
} else if (!stop_after_syntax_identifier_) {
+ GOOGLE_LOG(WARNING) << "No syntax specified for the proto file. "
+ << "Please use 'syntax = \"proto2\";' or "
+ << "'syntax = \"proto3\";' to specify a syntax "
+ << "version. (Defaulted to proto2 syntax.)";
syntax_identifier_ = "proto2";
}
@@ -449,7 +562,8 @@ bool Parser::Parse(io::Tokenizer* input, FileDescriptorProto* file) {
if (LookingAt("}")) {
AddError("Unmatched \"}\".");
- input_->NextWithComments(NULL, NULL, &upcoming_doc_comments_);
+ input_->NextWithComments(NULL, &upcoming_detached_comments_,
+ &upcoming_doc_comments_);
}
}
}
@@ -461,20 +575,25 @@ bool Parser::Parse(io::Tokenizer* input, FileDescriptorProto* file) {
return !had_errors_;
}
-bool Parser::ParseSyntaxIdentifier() {
- DO(Consume("syntax", "File must begin with 'syntax = \"proto2\";'."));
+bool Parser::ParseSyntaxIdentifier(const LocationRecorder& parent) {
+ LocationRecorder syntax_location(parent,
+ FileDescriptorProto::kSyntaxFieldNumber);
+ DO(Consume(
+ "syntax",
+ "File must begin with a syntax statement, e.g. 'syntax = \"proto2\";'."));
DO(Consume("="));
io::Tokenizer::Token syntax_token = input_->current();
string syntax;
DO(ConsumeString(&syntax, "Expected syntax identifier."));
- DO(ConsumeEndOfDeclaration(";", NULL));
+ DO(ConsumeEndOfDeclaration(";", &syntax_location));
syntax_identifier_ = syntax;
- if (syntax != "proto2" && !stop_after_syntax_identifier_) {
+ if (syntax != "proto2" && syntax != "proto3" &&
+ !stop_after_syntax_identifier_) {
AddError(syntax_token.line, syntax_token.column,
"Unrecognized syntax identifier \"" + syntax + "\". This parser "
- "only recognizes \"proto2\".");
+ "only recognizes \"proto2\" and \"proto3\".");
return false;
}
@@ -489,15 +608,15 @@ bool Parser::ParseTopLevelStatement(FileDescriptorProto* file,
} else if (LookingAt("message")) {
LocationRecorder location(root_location,
FileDescriptorProto::kMessageTypeFieldNumber, file->message_type_size());
- return ParseMessageDefinition(file->add_message_type(), location);
+ return ParseMessageDefinition(file->add_message_type(), location, file);
} else if (LookingAt("enum")) {
LocationRecorder location(root_location,
FileDescriptorProto::kEnumTypeFieldNumber, file->enum_type_size());
- return ParseEnumDefinition(file->add_enum_type(), location);
+ return ParseEnumDefinition(file->add_enum_type(), location, file);
} else if (LookingAt("service")) {
LocationRecorder location(root_location,
FileDescriptorProto::kServiceFieldNumber, file->service_size());
- return ParseServiceDefinition(file->add_service(), location);
+ return ParseServiceDefinition(file->add_service(), location, file);
} else if (LookingAt("extend")) {
LocationRecorder location(root_location,
FileDescriptorProto::kExtensionFieldNumber);
@@ -505,18 +624,19 @@ bool Parser::ParseTopLevelStatement(FileDescriptorProto* file,
file->mutable_message_type(),
root_location,
FileDescriptorProto::kMessageTypeFieldNumber,
- location);
+ location, file);
} else if (LookingAt("import")) {
return ParseImport(file->mutable_dependency(),
file->mutable_public_dependency(),
file->mutable_weak_dependency(),
- root_location);
+ root_location, file);
} else if (LookingAt("package")) {
- return ParsePackage(file, root_location);
+ return ParsePackage(file, root_location, file);
} else if (LookingAt("option")) {
LocationRecorder location(root_location,
FileDescriptorProto::kOptionsFieldNumber);
- return ParseOption(file->mutable_options(), location, OPTION_STATEMENT);
+ return ParseOption(file->mutable_options(), location, file,
+ OPTION_STATEMENT);
} else {
AddError("Expected top-level statement (e.g. \"message\").");
return false;
@@ -526,8 +646,10 @@ bool Parser::ParseTopLevelStatement(FileDescriptorProto* file,
// -------------------------------------------------------------------
// Messages
-bool Parser::ParseMessageDefinition(DescriptorProto* message,
- const LocationRecorder& message_location) {
+bool Parser::ParseMessageDefinition(
+ DescriptorProto* message,
+ const LocationRecorder& message_location,
+ const FileDescriptorProto* containing_file) {
DO(Consume("message"));
{
LocationRecorder location(message_location,
@@ -536,7 +658,7 @@ bool Parser::ParseMessageDefinition(DescriptorProto* message,
message, DescriptorPool::ErrorCollector::NAME);
DO(ConsumeIdentifier(message->mutable_name(), "Expected message name."));
}
- DO(ParseMessageBlock(message, message_location));
+ DO(ParseMessageBlock(message, message_location, containing_file));
return true;
}
@@ -575,7 +697,8 @@ void AdjustExtensionRangesWithMaxEndNumber(DescriptorProto* message) {
} // namespace
bool Parser::ParseMessageBlock(DescriptorProto* message,
- const LocationRecorder& message_location) {
+ const LocationRecorder& message_location,
+ const FileDescriptorProto* containing_file) {
DO(ConsumeEndOfDeclaration("{", &message_location));
while (!TryConsumeEndOfDeclaration("}", NULL)) {
@@ -584,7 +707,7 @@ bool Parser::ParseMessageBlock(DescriptorProto* message,
return false;
}
- if (!ParseMessageStatement(message, message_location)) {
+ if (!ParseMessageStatement(message, message_location, containing_file)) {
// This statement failed to parse. Skip it, but keep looping to parse
// other statements.
SkipStatement();
@@ -598,7 +721,8 @@ bool Parser::ParseMessageBlock(DescriptorProto* message,
}
bool Parser::ParseMessageStatement(DescriptorProto* message,
- const LocationRecorder& message_location) {
+ const LocationRecorder& message_location,
+ const FileDescriptorProto* containing_file) {
if (TryConsumeEndOfDeclaration(";", NULL)) {
// empty statement; ignore
return true;
@@ -606,16 +730,20 @@ bool Parser::ParseMessageStatement(DescriptorProto* message,
LocationRecorder location(message_location,
DescriptorProto::kNestedTypeFieldNumber,
message->nested_type_size());
- return ParseMessageDefinition(message->add_nested_type(), location);
+ return ParseMessageDefinition(message->add_nested_type(), location,
+ containing_file);
} else if (LookingAt("enum")) {
LocationRecorder location(message_location,
DescriptorProto::kEnumTypeFieldNumber,
message->enum_type_size());
- return ParseEnumDefinition(message->add_enum_type(), location);
+ return ParseEnumDefinition(message->add_enum_type(), location,
+ containing_file);
} else if (LookingAt("extensions")) {
LocationRecorder location(message_location,
DescriptorProto::kExtensionRangeFieldNumber);
- return ParseExtensions(message, location);
+ return ParseExtensions(message, location, containing_file);
+ } else if (LookingAt("reserved")) {
+ return ParseReserved(message, message_location);
} else if (LookingAt("extend")) {
LocationRecorder location(message_location,
DescriptorProto::kExtensionFieldNumber);
@@ -623,11 +751,21 @@ bool Parser::ParseMessageStatement(DescriptorProto* message,
message->mutable_nested_type(),
message_location,
DescriptorProto::kNestedTypeFieldNumber,
- location);
+ location, containing_file);
} else if (LookingAt("option")) {
LocationRecorder location(message_location,
DescriptorProto::kOptionsFieldNumber);
- return ParseOption(message->mutable_options(), location, OPTION_STATEMENT);
+ return ParseOption(message->mutable_options(), location,
+ containing_file, OPTION_STATEMENT);
+ } else if (LookingAt("oneof")) {
+ int oneof_index = message->oneof_decl_size();
+ LocationRecorder oneof_location(message_location,
+ DescriptorProto::kOneofDeclFieldNumber,
+ oneof_index);
+
+ return ParseOneof(message->add_oneof_decl(), message,
+ oneof_index, oneof_location, message_location,
+ containing_file);
} else {
LocationRecorder location(message_location,
DescriptorProto::kFieldFieldNumber,
@@ -636,7 +774,8 @@ bool Parser::ParseMessageStatement(DescriptorProto* message,
message->mutable_nested_type(),
message_location,
DescriptorProto::kNestedTypeFieldNumber,
- location);
+ location,
+ containing_file);
}
}
@@ -644,30 +783,106 @@ bool Parser::ParseMessageField(FieldDescriptorProto* field,
RepeatedPtrField<DescriptorProto>* messages,
const LocationRecorder& parent_location,
int location_field_number_for_nested_type,
- const LocationRecorder& field_location) {
- // Parse label and type.
- io::Tokenizer::Token label_token = input_->current();
+ const LocationRecorder& field_location,
+ const FileDescriptorProto* containing_file) {
{
LocationRecorder location(field_location,
FieldDescriptorProto::kLabelFieldNumber);
FieldDescriptorProto::Label label;
- DO(ParseLabel(&label));
- field->set_label(label);
+ if (ParseLabel(&label, containing_file)) {
+ field->set_label(label);
+ if (label == FieldDescriptorProto::LABEL_OPTIONAL &&
+ syntax_identifier_ == "proto3") {
+ AddError(
+ "Explicit 'optional' labels are disallowed in the Proto3 syntax. "
+ "To define 'optional' fields in Proto3, simply remove the "
+ "'optional' label, as fields are 'optional' by default.");
+ }
+ }
}
+ return ParseMessageFieldNoLabel(field, messages, parent_location,
+ location_field_number_for_nested_type,
+ field_location,
+ containing_file);
+}
+
+bool Parser::ParseMessageFieldNoLabel(
+ FieldDescriptorProto* field,
+ RepeatedPtrField<DescriptorProto>* messages,
+ const LocationRecorder& parent_location,
+ int location_field_number_for_nested_type,
+ const LocationRecorder& field_location,
+ const FileDescriptorProto* containing_file) {
+ MapField map_field;
+ // Parse type.
{
LocationRecorder location(field_location); // add path later
location.RecordLegacyLocation(field, DescriptorPool::ErrorCollector::TYPE);
+ bool type_parsed = false;
FieldDescriptorProto::Type type = FieldDescriptorProto::TYPE_INT32;
string type_name;
- DO(ParseType(&type, &type_name));
- if (type_name.empty()) {
- location.AddPath(FieldDescriptorProto::kTypeFieldNumber);
- field->set_type(type);
- } else {
+
+ // Special case map field. We only treat the field as a map field if the
+ // field type name starts with the word "map" with a following "<".
+ if (TryConsume("map")) {
+ if (LookingAt("<")) {
+ map_field.is_map_field = true;
+ } else {
+ // False positive
+ type_parsed = true;
+ type_name = "map";
+ }
+ }
+ if (map_field.is_map_field) {
+ if (field->has_oneof_index()) {
+ AddError("Map fields are not allowed in oneofs.");
+ return false;
+ }
+ if (field->has_label()) {
+ AddError(
+ "Field labels (required/optional/repeated) are not allowed on "
+ "map fields.");
+ return false;
+ }
+ if (field->has_extendee()) {
+ AddError("Map fields are not allowed to be extensions.");
+ return false;
+ }
+ field->set_label(FieldDescriptorProto::LABEL_REPEATED);
+ DO(Consume("<"));
+ DO(ParseType(&map_field.key_type, &map_field.key_type_name));
+ DO(Consume(","));
+ DO(ParseType(&map_field.value_type, &map_field.value_type_name));
+ DO(Consume(">"));
+ // Defer setting of the type name of the map field until the
+ // field name is parsed. Add the source location though.
location.AddPath(FieldDescriptorProto::kTypeNameFieldNumber);
- field->set_type_name(type_name);
+ } else {
+ // Handle the case where no explicit label is given for a non-map field.
+ if (!field->has_label() && DefaultToOptionalFields()) {
+ field->set_label(FieldDescriptorProto::LABEL_OPTIONAL);
+ }
+ if (!field->has_label()) {
+ AddError("Expected \"required\", \"optional\", or \"repeated\".");
+ // We can actually reasonably recover here by just assuming the user
+ // forgot the label altogether.
+ field->set_label(FieldDescriptorProto::LABEL_OPTIONAL);
+ }
+
+ // Handle the case where the actual type is a message or enum named "map",
+ // which we already consumed in the code above.
+ if (!type_parsed) {
+ DO(ParseType(&type, &type_name));
+ }
+ if (type_name.empty()) {
+ location.AddPath(FieldDescriptorProto::kTypeFieldNumber);
+ field->set_type(type);
+ } else {
+ location.AddPath(FieldDescriptorProto::kTypeNameFieldNumber);
+ field->set_type_name(type_name);
+ }
}
}
@@ -693,14 +908,14 @@ bool Parser::ParseMessageField(FieldDescriptorProto* field,
}
// Parse options.
- DO(ParseFieldOptions(field, field_location));
+ DO(ParseFieldOptions(field, field_location, containing_file));
// Deal with groups.
if (field->has_type() && field->type() == FieldDescriptorProto::TYPE_GROUP) {
// Awkward: Since a group declares both a message type and a field, we
// have to create overlapping locations.
LocationRecorder group_location(parent_location);
- group_location.StartAt(label_token);
+ group_location.StartAt(field_location);
group_location.AddPath(location_field_number_for_nested_type);
group_location.AddPath(messages->size());
@@ -736,7 +951,7 @@ bool Parser::ParseMessageField(FieldDescriptorProto* field,
field->set_type_name(group->name());
if (LookingAt("{")) {
- DO(ParseMessageBlock(group, group_location));
+ DO(ParseMessageBlock(group, group_location, containing_file));
} else {
AddError("Missing group body.");
return false;
@@ -745,11 +960,81 @@ bool Parser::ParseMessageField(FieldDescriptorProto* field,
DO(ConsumeEndOfDeclaration(";", &field_location));
}
+ // Create a map entry type if this is a map field.
+ if (map_field.is_map_field) {
+ GenerateMapEntry(map_field, field, messages);
+ }
+
return true;
}
+void Parser::GenerateMapEntry(const MapField& map_field,
+ FieldDescriptorProto* field,
+ RepeatedPtrField<DescriptorProto>* messages) {
+ DescriptorProto* entry = messages->Add();
+ string entry_name = MapEntryName(field->name());
+ field->set_type_name(entry_name);
+ entry->set_name(entry_name);
+ entry->mutable_options()->set_map_entry(true);
+ FieldDescriptorProto* key_field = entry->add_field();
+ key_field->set_name("key");
+ key_field->set_label(FieldDescriptorProto::LABEL_OPTIONAL);
+ key_field->set_number(1);
+ if (map_field.key_type_name.empty()) {
+ key_field->set_type(map_field.key_type);
+ } else {
+ key_field->set_type_name(map_field.key_type_name);
+ }
+ FieldDescriptorProto* value_field = entry->add_field();
+ value_field->set_name("value");
+ value_field->set_label(FieldDescriptorProto::LABEL_OPTIONAL);
+ value_field->set_number(2);
+ if (map_field.value_type_name.empty()) {
+ value_field->set_type(map_field.value_type);
+ } else {
+ value_field->set_type_name(map_field.value_type_name);
+ }
+ // Propagate the "enforce_utf8" option to key and value fields if they
+ // are strings. This helps simplify the implementation of code generators
+ // and also reflection-based parsing code.
+ //
+ // The following definition:
+ // message Foo {
+ // map<string, string> value = 1 [enforce_utf8 = false];
+ // }
+ // will be interpreted as:
+ // message Foo {
+ // message ValueEntry {
+ // option map_entry = true;
+ // string key = 1 [enforce_utf8 = false];
+ // string value = 2 [enforce_utf8 = false];
+ // }
+ // repeated ValueEntry value = 1 [enforce_utf8 = false];
+ // }
+ //
+ // TODO(xiaofeng): Remove this when the "enforce_utf8" option is removed
+ // from protocol compiler.
+ for (int i = 0; i < field->options().uninterpreted_option_size(); ++i) {
+ const UninterpretedOption& option =
+ field->options().uninterpreted_option(i);
+ if (option.name_size() == 1 &&
+ option.name(0).name_part() == "enforce_utf8" &&
+ !option.name(0).is_extension()) {
+ if (key_field->type() == FieldDescriptorProto::TYPE_STRING) {
+ key_field->mutable_options()->add_uninterpreted_option()
+ ->CopyFrom(option);
+ }
+ if (value_field->type() == FieldDescriptorProto::TYPE_STRING) {
+ value_field->mutable_options()->add_uninterpreted_option()
+ ->CopyFrom(option);
+ }
+ }
+ }
+}
+
bool Parser::ParseFieldOptions(FieldDescriptorProto* field,
- const LocationRecorder& field_location) {
+ const LocationRecorder& field_location,
+ const FileDescriptorProto* containing_file) {
if (!LookingAt("[")) return true;
LocationRecorder location(field_location,
@@ -762,9 +1047,13 @@ bool Parser::ParseFieldOptions(FieldDescriptorProto* field,
if (LookingAt("default")) {
// We intentionally pass field_location rather than location here, since
// the default value is not actually an option.
- DO(ParseDefaultAssignment(field, field_location));
+ DO(ParseDefaultAssignment(field, field_location, containing_file));
+ } else if (LookingAt("json_name")) {
+ // Like default value, this "json_name" is not an actual option.
+ DO(ParseJsonName(field, field_location, containing_file));
} else {
- DO(ParseOption(field->mutable_options(), location, OPTION_ASSIGNMENT));
+ DO(ParseOption(field->mutable_options(), location,
+ containing_file, OPTION_ASSIGNMENT));
}
} while (TryConsume(","));
@@ -772,8 +1061,10 @@ bool Parser::ParseFieldOptions(FieldDescriptorProto* field,
return true;
}
-bool Parser::ParseDefaultAssignment(FieldDescriptorProto* field,
- const LocationRecorder& field_location) {
+bool Parser::ParseDefaultAssignment(
+ FieldDescriptorProto* field,
+ const LocationRecorder& field_location,
+ const FileDescriptorProto* containing_file) {
if (field->has_default_value()) {
AddError("Already set option \"default\".");
field->clear_default_value();
@@ -790,8 +1081,16 @@ bool Parser::ParseDefaultAssignment(FieldDescriptorProto* field,
if (!field->has_type()) {
// The field has a type name, but we don't know if it is a message or an
- // enum yet. Assume an enum for now.
- DO(ConsumeIdentifier(default_value, "Expected identifier."));
+ // enum yet. (If it were a primitive type, |field| would have a type set
+ // already.) In this case, simply take the current string as the default
+ // value; we will catch the error later if it is not a valid enum value.
+ // (N.B. that we do not check whether the current token is an identifier:
+ // doing so throws strange errors when the user mistypes a primitive
+ // typename and we assume it's an enum. E.g.: "optional int foo = 1 [default
+ // = 42]". In such a case the fundamental error is really that "int" is not
+ // a type, not that "42" is not an identifier. See b/12533582.)
+ *default_value = input_->current().text;
+ input_->Next();
return true;
}
@@ -817,7 +1116,8 @@ bool Parser::ParseDefaultAssignment(FieldDescriptorProto* field,
}
// Parse the integer to verify that it is not out-of-range.
uint64 value;
- DO(ConsumeInteger64(max_value, &value, "Expected integer."));
+ DO(ConsumeInteger64(max_value, &value,
+ "Expected integer for field default value."));
// And stringify it again.
default_value->append(SimpleItoa(value));
break;
@@ -839,7 +1139,8 @@ bool Parser::ParseDefaultAssignment(FieldDescriptorProto* field,
}
// Parse the integer to verify that it is not out-of-range.
uint64 value;
- DO(ConsumeInteger64(max_value, &value, "Expected integer."));
+ DO(ConsumeInteger64(max_value, &value,
+ "Expected integer for field default value."));
// And stringify it again.
default_value->append(SimpleItoa(value));
break;
@@ -871,7 +1172,11 @@ bool Parser::ParseDefaultAssignment(FieldDescriptorProto* field,
break;
case FieldDescriptorProto::TYPE_STRING:
- DO(ConsumeString(default_value, "Expected string."));
+ // Note: When file opton java_string_check_utf8 is true, if a
+ // non-string representation (eg byte[]) is later supported, it must
+ // be checked for UTF-8-ness.
+ DO(ConsumeString(default_value, "Expected string for field default "
+ "value."));
break;
case FieldDescriptorProto::TYPE_BYTES:
@@ -880,7 +1185,8 @@ bool Parser::ParseDefaultAssignment(FieldDescriptorProto* field,
break;
case FieldDescriptorProto::TYPE_ENUM:
- DO(ConsumeIdentifier(default_value, "Expected identifier."));
+ DO(ConsumeIdentifier(default_value, "Expected enum identifier for field "
+ "default value."));
break;
case FieldDescriptorProto::TYPE_MESSAGE:
@@ -892,8 +1198,31 @@ bool Parser::ParseDefaultAssignment(FieldDescriptorProto* field,
return true;
}
+bool Parser::ParseJsonName(
+ FieldDescriptorProto* field,
+ const LocationRecorder& field_location,
+ const FileDescriptorProto* containing_file) {
+ if (field->has_json_name()) {
+ AddError("Already set option \"json_name\".");
+ field->clear_json_name();
+ }
+
+ DO(Consume("json_name"));
+ DO(Consume("="));
+
+ LocationRecorder location(field_location,
+ FieldDescriptorProto::kJsonNameFieldNumber);
+ location.RecordLegacyLocation(
+ field, DescriptorPool::ErrorCollector::OPTION_VALUE);
+ DO(ConsumeString(field->mutable_json_name(),
+ "Expected string for JSON name."));
+ return true;
+}
+
+
bool Parser::ParseOptionNamePart(UninterpretedOption* uninterpreted_option,
- const LocationRecorder& part_location) {
+ const LocationRecorder& part_location,
+ const FileDescriptorProto* containing_file) {
UninterpretedOption::NamePart* name = uninterpreted_option->add_name();
string identifier; // We parse identifiers into this string.
if (LookingAt("(")) { // This is an extension.
@@ -957,6 +1286,7 @@ bool Parser::ParseUninterpretedBlock(string* value) {
// UninterpretedOption, to be interpreted later.
bool Parser::ParseOption(Message* options,
const LocationRecorder& options_location,
+ const FileDescriptorProto* containing_file,
OptionStyle style) {
// Create an entry in the uninterpreted_option field.
const FieldDescriptor* uninterpreted_option_field = options->GetDescriptor()->
@@ -988,14 +1318,16 @@ bool Parser::ParseOption(Message* options,
{
LocationRecorder part_location(name_location,
uninterpreted_option->name_size());
- DO(ParseOptionNamePart(uninterpreted_option, part_location));
+ DO(ParseOptionNamePart(uninterpreted_option, part_location,
+ containing_file));
}
while (LookingAt(".")) {
DO(Consume("."));
LocationRecorder part_location(name_location,
uninterpreted_option->name_size());
- DO(ParseOptionNamePart(uninterpreted_option, part_location));
+ DO(ParseOptionNamePart(uninterpreted_option, part_location,
+ containing_file));
}
}
@@ -1092,7 +1424,8 @@ bool Parser::ParseOption(Message* options,
}
bool Parser::ParseExtensions(DescriptorProto* message,
- const LocationRecorder& extensions_location) {
+ const LocationRecorder& extensions_location,
+ const FileDescriptorProto* containing_file) {
// Parse the declaration.
DO(Consume("extensions"));
@@ -1146,11 +1479,83 @@ bool Parser::ParseExtensions(DescriptorProto* message,
return true;
}
+// This is similar to extension range parsing, except that "max" is not
+// supported, and accepts field name literals.
+bool Parser::ParseReserved(DescriptorProto* message,
+ const LocationRecorder& message_location) {
+ // Parse the declaration.
+ DO(Consume("reserved"));
+ if (LookingAtType(io::Tokenizer::TYPE_STRING)) {
+ LocationRecorder location(message_location,
+ DescriptorProto::kReservedNameFieldNumber);
+ return ParseReservedNames(message, location);
+ } else {
+ LocationRecorder location(message_location,
+ DescriptorProto::kReservedRangeFieldNumber);
+ return ParseReservedNumbers(message, location);
+ }
+}
+
+
+bool Parser::ParseReservedNames(DescriptorProto* message,
+ const LocationRecorder& parent_location) {
+ do {
+ LocationRecorder location(parent_location, message->reserved_name_size());
+ DO(ConsumeString(message->add_reserved_name(), "Expected field name."));
+ } while (TryConsume(","));
+ DO(ConsumeEndOfDeclaration(";", &parent_location));
+ return true;
+}
+
+bool Parser::ParseReservedNumbers(DescriptorProto* message,
+ const LocationRecorder& parent_location) {
+ bool first = true;
+ do {
+ LocationRecorder location(parent_location, message->reserved_range_size());
+
+ DescriptorProto::ReservedRange* range = message->add_reserved_range();
+ int start, end;
+ io::Tokenizer::Token start_token;
+ {
+ LocationRecorder start_location(
+ location, DescriptorProto::ReservedRange::kStartFieldNumber);
+ start_token = input_->current();
+ DO(ConsumeInteger(&start, (first ?
+ "Expected field name or number range." :
+ "Expected field number range.")));
+ }
+
+ if (TryConsume("to")) {
+ LocationRecorder end_location(
+ location, DescriptorProto::ReservedRange::kEndFieldNumber);
+ DO(ConsumeInteger(&end, "Expected integer."));
+ } else {
+ LocationRecorder end_location(
+ location, DescriptorProto::ReservedRange::kEndFieldNumber);
+ end_location.StartAt(start_token);
+ end_location.EndAt(start_token);
+ end = start;
+ }
+
+ // Users like to specify inclusive ranges, but in code we like the end
+ // number to be exclusive.
+ ++end;
+
+ range->set_start(start);
+ range->set_end(end);
+ first = false;
+ } while (TryConsume(","));
+
+ DO(ConsumeEndOfDeclaration(";", &parent_location));
+ return true;
+}
+
bool Parser::ParseExtend(RepeatedPtrField<FieldDescriptorProto>* extensions,
RepeatedPtrField<DescriptorProto>* messages,
const LocationRecorder& parent_location,
int location_field_number_for_nested_type,
- const LocationRecorder& extend_location) {
+ const LocationRecorder& extend_location,
+ const FileDescriptorProto* containing_file) {
DO(Consume("extend"));
// Parse the extendee type.
@@ -1192,7 +1597,65 @@ bool Parser::ParseExtend(RepeatedPtrField<FieldDescriptorProto>* extensions,
if (!ParseMessageField(field, messages, parent_location,
location_field_number_for_nested_type,
- location)) {
+ location,
+ containing_file)) {
+ // This statement failed to parse. Skip it, but keep looping to parse
+ // other statements.
+ SkipStatement();
+ }
+ } while (!TryConsumeEndOfDeclaration("}", NULL));
+
+ return true;
+}
+
+bool Parser::ParseOneof(OneofDescriptorProto* oneof_decl,
+ DescriptorProto* containing_type,
+ int oneof_index,
+ const LocationRecorder& oneof_location,
+ const LocationRecorder& containing_type_location,
+ const FileDescriptorProto* containing_file) {
+ DO(Consume("oneof"));
+
+ {
+ LocationRecorder name_location(oneof_location,
+ OneofDescriptorProto::kNameFieldNumber);
+ DO(ConsumeIdentifier(oneof_decl->mutable_name(), "Expected oneof name."));
+ }
+
+ DO(ConsumeEndOfDeclaration("{", &oneof_location));
+
+ do {
+ if (AtEnd()) {
+ AddError("Reached end of input in oneof definition (missing '}').");
+ return false;
+ }
+
+ // Print a nice error if the user accidentally tries to place a label
+ // on an individual member of a oneof.
+ if (LookingAt("required") ||
+ LookingAt("optional") ||
+ LookingAt("repeated")) {
+ AddError("Fields in oneofs must not have labels (required / optional "
+ "/ repeated).");
+ // We can continue parsing here because we understand what the user
+ // meant. The error report will still make parsing fail overall.
+ input_->Next();
+ }
+
+ LocationRecorder field_location(containing_type_location,
+ DescriptorProto::kFieldFieldNumber,
+ containing_type->field_size());
+
+ FieldDescriptorProto* field = containing_type->add_field();
+ field->set_label(FieldDescriptorProto::LABEL_OPTIONAL);
+ field->set_oneof_index(oneof_index);
+
+ if (!ParseMessageFieldNoLabel(field,
+ containing_type->mutable_nested_type(),
+ containing_type_location,
+ DescriptorProto::kNestedTypeFieldNumber,
+ field_location,
+ containing_file)) {
// This statement failed to parse. Skip it, but keep looping to parse
// other statements.
SkipStatement();
@@ -1206,7 +1669,8 @@ bool Parser::ParseExtend(RepeatedPtrField<FieldDescriptorProto>* extensions,
// Enums
bool Parser::ParseEnumDefinition(EnumDescriptorProto* enum_type,
- const LocationRecorder& enum_location) {
+ const LocationRecorder& enum_location,
+ const FileDescriptorProto* containing_file) {
DO(Consume("enum"));
{
@@ -1217,12 +1681,16 @@ bool Parser::ParseEnumDefinition(EnumDescriptorProto* enum_type,
DO(ConsumeIdentifier(enum_type->mutable_name(), "Expected enum name."));
}
- DO(ParseEnumBlock(enum_type, enum_location));
+ DO(ParseEnumBlock(enum_type, enum_location, containing_file));
+
+ DO(ValidateEnum(enum_type));
+
return true;
}
bool Parser::ParseEnumBlock(EnumDescriptorProto* enum_type,
- const LocationRecorder& enum_location) {
+ const LocationRecorder& enum_location,
+ const FileDescriptorProto* containing_file) {
DO(ConsumeEndOfDeclaration("{", &enum_location));
while (!TryConsumeEndOfDeclaration("}", NULL)) {
@@ -1231,7 +1699,7 @@ bool Parser::ParseEnumBlock(EnumDescriptorProto* enum_type,
return false;
}
- if (!ParseEnumStatement(enum_type, enum_location)) {
+ if (!ParseEnumStatement(enum_type, enum_location, containing_file)) {
// This statement failed to parse. Skip it, but keep looping to parse
// other statements.
SkipStatement();
@@ -1242,7 +1710,8 @@ bool Parser::ParseEnumBlock(EnumDescriptorProto* enum_type,
}
bool Parser::ParseEnumStatement(EnumDescriptorProto* enum_type,
- const LocationRecorder& enum_location) {
+ const LocationRecorder& enum_location,
+ const FileDescriptorProto* containing_file) {
if (TryConsumeEndOfDeclaration(";", NULL)) {
// empty statement; ignore
return true;
@@ -1250,16 +1719,17 @@ bool Parser::ParseEnumStatement(EnumDescriptorProto* enum_type,
LocationRecorder location(enum_location,
EnumDescriptorProto::kOptionsFieldNumber);
return ParseOption(enum_type->mutable_options(), location,
- OPTION_STATEMENT);
+ containing_file, OPTION_STATEMENT);
} else {
LocationRecorder location(enum_location,
EnumDescriptorProto::kValueFieldNumber, enum_type->value_size());
- return ParseEnumConstant(enum_type->add_value(), location);
+ return ParseEnumConstant(enum_type->add_value(), location, containing_file);
}
}
bool Parser::ParseEnumConstant(EnumValueDescriptorProto* enum_value,
- const LocationRecorder& enum_value_location) {
+ const LocationRecorder& enum_value_location,
+ const FileDescriptorProto* containing_file) {
// Parse name.
{
LocationRecorder location(enum_value_location,
@@ -1284,7 +1754,8 @@ bool Parser::ParseEnumConstant(EnumValueDescriptorProto* enum_value,
enum_value->set_number(number);
}
- DO(ParseEnumConstantOptions(enum_value, enum_value_location));
+ DO(ParseEnumConstantOptions(enum_value, enum_value_location,
+ containing_file));
DO(ConsumeEndOfDeclaration(";", &enum_value_location));
@@ -1293,7 +1764,8 @@ bool Parser::ParseEnumConstant(EnumValueDescriptorProto* enum_value,
bool Parser::ParseEnumConstantOptions(
EnumValueDescriptorProto* value,
- const LocationRecorder& enum_value_location) {
+ const LocationRecorder& enum_value_location,
+ const FileDescriptorProto* containing_file) {
if (!LookingAt("[")) return true;
LocationRecorder location(
@@ -1302,7 +1774,8 @@ bool Parser::ParseEnumConstantOptions(
DO(Consume("["));
do {
- DO(ParseOption(value->mutable_options(), location, OPTION_ASSIGNMENT));
+ DO(ParseOption(value->mutable_options(), location,
+ containing_file, OPTION_ASSIGNMENT));
} while (TryConsume(","));
DO(Consume("]"));
@@ -1312,8 +1785,10 @@ bool Parser::ParseEnumConstantOptions(
// -------------------------------------------------------------------
// Services
-bool Parser::ParseServiceDefinition(ServiceDescriptorProto* service,
- const LocationRecorder& service_location) {
+bool Parser::ParseServiceDefinition(
+ ServiceDescriptorProto* service,
+ const LocationRecorder& service_location,
+ const FileDescriptorProto* containing_file) {
DO(Consume("service"));
{
@@ -1324,12 +1799,13 @@ bool Parser::ParseServiceDefinition(ServiceDescriptorProto* service,
DO(ConsumeIdentifier(service->mutable_name(), "Expected service name."));
}
- DO(ParseServiceBlock(service, service_location));
+ DO(ParseServiceBlock(service, service_location, containing_file));
return true;
}
bool Parser::ParseServiceBlock(ServiceDescriptorProto* service,
- const LocationRecorder& service_location) {
+ const LocationRecorder& service_location,
+ const FileDescriptorProto* containing_file) {
DO(ConsumeEndOfDeclaration("{", &service_location));
while (!TryConsumeEndOfDeclaration("}", NULL)) {
@@ -1338,7 +1814,7 @@ bool Parser::ParseServiceBlock(ServiceDescriptorProto* service,
return false;
}
- if (!ParseServiceStatement(service, service_location)) {
+ if (!ParseServiceStatement(service, service_location, containing_file)) {
// This statement failed to parse. Skip it, but keep looping to parse
// other statements.
SkipStatement();
@@ -1349,23 +1825,26 @@ bool Parser::ParseServiceBlock(ServiceDescriptorProto* service,
}
bool Parser::ParseServiceStatement(ServiceDescriptorProto* service,
- const LocationRecorder& service_location) {
+ const LocationRecorder& service_location,
+ const FileDescriptorProto* containing_file) {
if (TryConsumeEndOfDeclaration(";", NULL)) {
// empty statement; ignore
return true;
} else if (LookingAt("option")) {
LocationRecorder location(
service_location, ServiceDescriptorProto::kOptionsFieldNumber);
- return ParseOption(service->mutable_options(), location, OPTION_STATEMENT);
+ return ParseOption(service->mutable_options(), location,
+ containing_file, OPTION_STATEMENT);
} else {
LocationRecorder location(service_location,
ServiceDescriptorProto::kMethodFieldNumber, service->method_size());
- return ParseServiceMethod(service->add_method(), location);
+ return ParseServiceMethod(service->add_method(), location, containing_file);
}
}
bool Parser::ParseServiceMethod(MethodDescriptorProto* method,
- const LocationRecorder& method_location) {
+ const LocationRecorder& method_location,
+ const FileDescriptorProto* containing_file) {
DO(Consume("rpc"));
{
@@ -1379,6 +1858,15 @@ bool Parser::ParseServiceMethod(MethodDescriptorProto* method,
// Parse input type.
DO(Consume("("));
{
+ if (LookingAt("stream")) {
+ LocationRecorder location(
+ method_location, MethodDescriptorProto::kClientStreamingFieldNumber);
+ location.RecordLegacyLocation(
+ method, DescriptorPool::ErrorCollector::OTHER);
+ method->set_client_streaming(true);
+ DO(Consume("stream"));
+
+ }
LocationRecorder location(method_location,
MethodDescriptorProto::kInputTypeFieldNumber);
location.RecordLegacyLocation(
@@ -1391,6 +1879,15 @@ bool Parser::ParseServiceMethod(MethodDescriptorProto* method,
DO(Consume("returns"));
DO(Consume("("));
{
+ if (LookingAt("stream")) {
+ LocationRecorder location(
+ method_location, MethodDescriptorProto::kServerStreamingFieldNumber);
+ location.RecordLegacyLocation(
+ method, DescriptorPool::ErrorCollector::OTHER);
+ DO(Consume("stream"));
+ method->set_server_streaming(true);
+
+ }
LocationRecorder location(method_location,
MethodDescriptorProto::kOutputTypeFieldNumber);
location.RecordLegacyLocation(
@@ -1401,9 +1898,9 @@ bool Parser::ParseServiceMethod(MethodDescriptorProto* method,
if (LookingAt("{")) {
// Options!
- DO(ParseOptions(method_location,
- MethodDescriptorProto::kOptionsFieldNumber,
- method->mutable_options()));
+ DO(ParseMethodOptions(method_location, containing_file,
+ MethodDescriptorProto::kOptionsFieldNumber,
+ method->mutable_options()));
} else {
DO(ConsumeEndOfDeclaration(";", &method_location));
}
@@ -1412,9 +1909,10 @@ bool Parser::ParseServiceMethod(MethodDescriptorProto* method,
}
-bool Parser::ParseOptions(const LocationRecorder& parent_location,
- const int optionsFieldNumber,
- Message* mutable_options) {
+bool Parser::ParseMethodOptions(const LocationRecorder& parent_location,
+ const FileDescriptorProto* containing_file,
+ const int optionsFieldNumber,
+ Message* mutable_options) {
// Options!
ConsumeEndOfDeclaration("{", &parent_location);
while (!TryConsumeEndOfDeclaration("}", NULL)) {
@@ -1428,7 +1926,8 @@ bool Parser::ParseOptions(const LocationRecorder& parent_location,
} else {
LocationRecorder location(parent_location,
optionsFieldNumber);
- if (!ParseOption(mutable_options, location, OPTION_STATEMENT)) {
+ if (!ParseOption(mutable_options, location,
+ containing_file, OPTION_STATEMENT)) {
// This statement failed to parse. Skip it, but keep looping to
// parse other statements.
SkipStatement();
@@ -1441,7 +1940,8 @@ bool Parser::ParseOptions(const LocationRecorder& parent_location,
// -------------------------------------------------------------------
-bool Parser::ParseLabel(FieldDescriptorProto::Label* label) {
+bool Parser::ParseLabel(FieldDescriptorProto::Label* label,
+ const FileDescriptorProto* containing_file) {
if (TryConsume("optional")) {
*label = FieldDescriptorProto::LABEL_OPTIONAL;
return true;
@@ -1451,13 +1951,8 @@ bool Parser::ParseLabel(FieldDescriptorProto::Label* label) {
} else if (TryConsume("required")) {
*label = FieldDescriptorProto::LABEL_REQUIRED;
return true;
- } else {
- AddError("Expected \"required\", \"optional\", or \"repeated\".");
- // We can actually reasonably recover here by just assuming the user
- // forgot the label altogether.
- *label = FieldDescriptorProto::LABEL_OPTIONAL;
- return true;
}
+ return false;
}
bool Parser::ParseType(FieldDescriptorProto::Type* type,
@@ -1510,7 +2005,8 @@ bool Parser::ParseUserDefinedType(string* type_name) {
// ===================================================================
bool Parser::ParsePackage(FileDescriptorProto* file,
- const LocationRecorder& root_location) {
+ const LocationRecorder& root_location,
+ const FileDescriptorProto* containing_file) {
if (file->has_package()) {
AddError("Multiple package definitions.");
// Don't append the new package to the old one. Just replace it. Not
@@ -1544,7 +2040,8 @@ bool Parser::ParsePackage(FileDescriptorProto* file,
bool Parser::ParseImport(RepeatedPtrField<string>* dependency,
RepeatedField<int32>* public_dependency,
RepeatedField<int32>* weak_dependency,
- const LocationRecorder& root_location) {
+ const LocationRecorder& root_location,
+ const FileDescriptorProto* containing_file) {
DO(Consume("import"));
if (LookingAt("public")) {
LocationRecorder location(
@@ -1583,7 +2080,7 @@ bool SourceLocationTable::Find(
DescriptorPool::ErrorCollector::ErrorLocation location,
int* line, int* column) const {
const pair<int, int>* result =
- FindOrNull(location_map_, make_pair(descriptor, location));
+ FindOrNull(location_map_, std::make_pair(descriptor, location));
if (result == NULL) {
*line = -1;
*column = 0;
@@ -1599,7 +2096,8 @@ void SourceLocationTable::Add(
const Message* descriptor,
DescriptorPool::ErrorCollector::ErrorLocation location,
int line, int column) {
- location_map_[make_pair(descriptor, location)] = make_pair(line, column);
+ location_map_[std::make_pair(descriptor, location)] =
+ std::make_pair(line, column);
}
void SourceLocationTable::Clear() {

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