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Diffstat (limited to 'src/google/protobuf/compiler/objectivec/objectivec_map_field.cc')
| -rw-r--r-- | src/google/protobuf/compiler/objectivec/objectivec_map_field.cc | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/google/protobuf/compiler/objectivec/objectivec_map_field.cc b/src/google/protobuf/compiler/objectivec/objectivec_map_field.cc new file mode 100644 index 00000000..2987f3db --- /dev/null +++ b/src/google/protobuf/compiler/objectivec/objectivec_map_field.cc @@ -0,0 +1,163 @@ +// 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"; + } + + // Some compilers report reaching end of function even though all cases of + // the enum are handed in the switch. + 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 |