text: // 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.
  
  #include <map>
  #include <string>
  
  #include <google/protobuf/compiler/objectivec/objectivec_primitive_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/wire_format.h>
  #include <google/protobuf/wire_format_lite_inl.h>
  #include <google/protobuf/stubs/strutil.h>
  #include <google/protobuf/stubs/substitute.h>
  
  namespace google {
  namespace protobuf {
  namespace compiler {
  namespace objectivec {
  
  using internal::WireFormat;
  using internal::WireFormatLite;
  
  namespace {
  
  const char* PrimitiveTypeName(const FieldDescriptor* descriptor) {
    ObjectiveCType type = GetObjectiveCType(descriptor);
    switch (type) {
      case OBJECTIVECTYPE_INT32:
        return "int32_t";
      case OBJECTIVECTYPE_UINT32:
        return "uint32_t";
      case OBJECTIVECTYPE_INT64:
        return "int64_t";
      case OBJECTIVECTYPE_UINT64:
        return "uint64_t";
      case OBJECTIVECTYPE_FLOAT:
        return "float";
      case OBJECTIVECTYPE_DOUBLE:
        return "double";
      case OBJECTIVECTYPE_BOOLEAN:
        return "BOOL";
      case OBJECTIVECTYPE_STRING:
        return "NSString";
      case OBJECTIVECTYPE_DATA:
        return "NSData";
      case OBJECTIVECTYPE_ENUM:
        return "int32_t";
      case OBJECTIVECTYPE_MESSAGE:
        return NULL;  // Messages go through objectivec_message_field.cc|h.
    }
  
    // 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;
  }
  
  const char* PrimitiveArrayTypeName(const FieldDescriptor* descriptor) {
    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 "";  // Want NSArray
      case OBJECTIVECTYPE_DATA:
        return "";  // Want NSArray
      case OBJECTIVECTYPE_ENUM:
        return "Enum";
      case OBJECTIVECTYPE_MESSAGE:
        // Want NSArray (but goes through objectivec_message_field.cc|h).
        return "";
    }
  
    // 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;
  }
  
  void SetPrimitiveVariables(const FieldDescriptor* descriptor,
                             map<string, string>* variables) {
    std::string primitive_name = PrimitiveTypeName(descriptor);
    (*variables)["type"] = primitive_name;
    (*variables)["storage_type"] = primitive_name;
  }
  
  }  // namespace
  
  PrimitiveFieldGenerator::PrimitiveFieldGenerator(
      const FieldDescriptor* descriptor, const Options& options)
      : SingleFieldGenerator(descriptor, options) {
    SetPrimitiveVariables(descriptor, &variables_);
  }
  
  PrimitiveFieldGenerator::~PrimitiveFieldGenerator() {}
  
  void PrimitiveFieldGenerator::GenerateFieldStorageDeclaration(
      io::Printer* printer) const {
    if (GetObjectiveCType(descriptor_) == OBJECTIVECTYPE_BOOLEAN) {
      // Nothing, BOOLs are stored in the has bits.
    } else {
      SingleFieldGenerator::GenerateFieldStorageDeclaration(printer);
    }
  }
  
  int PrimitiveFieldGenerator::ExtraRuntimeHasBitsNeeded(void) const {
    if (GetObjectiveCType(descriptor_) == OBJECTIVECTYPE_BOOLEAN) {
      // Reserve a bit for the storage of the boolean.
      return 1;
    }
    return 0;
  }
  
  void PrimitiveFieldGenerator::SetExtraRuntimeHasBitsBase(int has_base) {
    if (GetObjectiveCType(descriptor_) == OBJECTIVECTYPE_BOOLEAN) {
      // Set into the offset the has bit to use for the actual value.
      variables_["storage_offset_value"] = SimpleItoa(has_base);
      variables_["storage_offset_comment"] =
          "  // Stored in _has_storage_ to save space.";
    }
  }
  
  PrimitiveObjFieldGenerator::PrimitiveObjFieldGenerator(
      const FieldDescriptor* descriptor, const Options& options)
      : ObjCObjFieldGenerator(descriptor, options) {
    SetPrimitiveVariables(descriptor, &variables_);
    variables_["property_storage_attribute"] = "copy";
  }
  
  PrimitiveObjFieldGenerator::~PrimitiveObjFieldGenerator() {}
  
  RepeatedPrimitiveFieldGenerator::RepeatedPrimitiveFieldGenerator(
      const FieldDescriptor* descriptor, const Options& options)
      : RepeatedFieldGenerator(descriptor, options) {
    SetPrimitiveVariables(descriptor, &variables_);
  
    string base_name = PrimitiveArrayTypeName(descriptor);
    if (base_name.length()) {
      variables_["array_storage_type"] = "GPB" + base_name + "Array";
    } else {
      variables_["array_storage_type"] = "NSMutableArray";
      variables_["array_property_type"] =
          "NSMutableArray<" + variables_["storage_type"] + "*>";
    }
  }
  
  RepeatedPrimitiveFieldGenerator::~RepeatedPrimitiveFieldGenerator() {}
  
  }  // namespace objectivec
  }  // namespace compiler
  }  // namespace protobuf
  }  // namespace google
  