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// Protocol Buffers - Google's data interchange format
// Copyright 2015 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.
#include <map>
#include <string>
#include <google/protobuf/compiler/objectivec/objectivec_map_field.h>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/compiler/objectivec/objectivec_helpers.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/stubs/strutil.h>
#include <google/protobuf/stubs/substitute.h>
namespace google {
namespace protobuf {
namespace compiler {
namespace objectivec {
// MapFieldGenerator uses RepeatedFieldGenerator as the parent because it
// provides a bunch of things (no has* methods, comments for contained type,
// etc.).
namespace {
const char* MapEntryTypeName(const FieldDescriptor* descriptor, bool isKey) {
ObjectiveCType type = GetObjectiveCType(descriptor);
switch (type) {
case OBJECTIVECTYPE_INT32:
return "Int32";
case OBJECTIVECTYPE_UINT32:
return "UInt32";
case OBJECTIVECTYPE_INT64:
return "Int64";
case OBJECTIVECTYPE_UINT64:
return "UInt64";
case OBJECTIVECTYPE_FLOAT:
return "Float";
case OBJECTIVECTYPE_DOUBLE:
return "Double";
case OBJECTIVECTYPE_BOOLEAN:
return "Bool";
case OBJECTIVECTYPE_STRING:
return (isKey ? "String" : "Object");
case OBJECTIVECTYPE_DATA:
return "Object";
case OBJECTIVECTYPE_ENUM:
return "Enum";
case OBJECTIVECTYPE_MESSAGE:
return "Object";
}
GOOGLE_LOG(FATAL) << "Can't get here.";
return NULL;
}
} // namespace
MapFieldGenerator::MapFieldGenerator(const FieldDescriptor* descriptor)
: RepeatedFieldGenerator(descriptor) {
const FieldDescriptor* key_descriptor =
descriptor->message_type()->FindFieldByName("key");
const FieldDescriptor* value_descriptor =
descriptor->message_type()->FindFieldByName("value");
value_field_generator_.reset(FieldGenerator::Make(value_descriptor));
// Pull over some variables_ from the value.
variables_["field_type"] = value_field_generator_->variable("field_type");
variables_["default"] = value_field_generator_->variable("default");
variables_["default_name"] = value_field_generator_->variable("default_name");
// Build custom field flags.
std::vector<string> field_flags;
field_flags.push_back("GPBFieldMapKey" + GetCapitalizedType(key_descriptor));
// Pull over the current text format custom name values that was calculated.
if (variables_["fieldflags"].find("GPBFieldTextFormatNameCustom") !=
string::npos) {
field_flags.push_back("GPBFieldTextFormatNameCustom");
}
// Pull over some info from the value's flags.
const string& value_field_flags =
value_field_generator_->variable("fieldflags");
if (value_field_flags.find("GPBFieldHasDefaultValue") != string::npos) {
field_flags.push_back("GPBFieldHasDefaultValue");
}
if (value_field_flags.find("GPBFieldHasEnumDescriptor") != string::npos) {
field_flags.push_back("GPBFieldHasEnumDescriptor");
}
variables_["fieldflags"] = BuildFlagsString(field_flags);
ObjectiveCType value_objc_type = GetObjectiveCType(value_descriptor);
if ((GetObjectiveCType(key_descriptor) == OBJECTIVECTYPE_STRING) &&
((value_objc_type == OBJECTIVECTYPE_STRING) ||
(value_objc_type == OBJECTIVECTYPE_DATA) ||
(value_objc_type == OBJECTIVECTYPE_MESSAGE))) {
variables_["array_storage_type"] = "NSMutableDictionary";
} else {
string base_name = MapEntryTypeName(key_descriptor, true);
base_name += MapEntryTypeName(value_descriptor, false);
base_name += "Dictionary";
variables_["array_storage_type"] = "GPB" + base_name;
}
}
MapFieldGenerator::~MapFieldGenerator() {}
void MapFieldGenerator::FinishInitialization(void) {
RepeatedFieldGenerator::FinishInitialization();
// Use the array_comment suport in RepeatedFieldGenerator to output what the
// values in the map are.
const FieldDescriptor* value_descriptor =
descriptor_->message_type()->FindFieldByName("value");
ObjectiveCType value_objc_type = GetObjectiveCType(value_descriptor);
if ((value_objc_type == OBJECTIVECTYPE_MESSAGE) ||
(value_objc_type == OBJECTIVECTYPE_DATA) ||
(value_objc_type == OBJECTIVECTYPE_STRING) ||
(value_objc_type == OBJECTIVECTYPE_ENUM)) {
variables_["array_comment"] =
"// |" + variables_["name"] + "| values are |" + value_field_generator_->variable("storage_type") + "|\n";
} else {
variables_["array_comment"] = "";
}
}
void MapFieldGenerator::GenerateFieldDescriptionTypeSpecific(
io::Printer* printer) const {
// Relay it to the value generator to provide enum validator, message
// class, etc.
value_field_generator_->GenerateFieldDescriptionTypeSpecific(printer);
}
} // namespace objectivec
} // namespace compiler
} // namespace protobuf
} // namespace google
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