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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.

#include <sstream>

#include <google/protobuf/compiler/code_generator.h>
#include <google/protobuf/compiler/plugin.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/io/printer.h>
#include <google/protobuf/io/zero_copy_stream.h>

#include <google/protobuf/compiler/csharp/csharp_helpers.h>
#include <google/protobuf/compiler/csharp/csharp_options.h>
#include <google/protobuf/compiler/csharp/csharp_enum_field.h>

namespace google {
namespace protobuf {
namespace compiler {
namespace csharp {

EnumFieldGenerator::EnumFieldGenerator(const FieldDescriptor* descriptor,
                                       int presenceIndex, const Options *options)
    : PrimitiveFieldGenerator(descriptor, presenceIndex, options) {
}

EnumFieldGenerator::~EnumFieldGenerator() {
}

void EnumFieldGenerator::GenerateParsingCode(io::Printer* printer) {
  printer->Print(variables_,
    "$property_name$ = ($type_name$) input.ReadEnum();\n");
}

void EnumFieldGenerator::GenerateSerializationCode(io::Printer* printer) {
  printer->Print(variables_,
    "if ($has_property_check$) {\n"
    "  output.WriteRawTag($tag_bytes$);\n"
    "  output.WriteEnum((int) $property_name$);\n"
    "}\n");
}

void EnumFieldGenerator::GenerateSerializedSizeCode(io::Printer* printer) {
  printer->Print(
    variables_,
    "if ($has_property_check$) {\n"
      "  size += $tag_size$ + pb::CodedOutputStream.ComputeEnumSize((int) $property_name$);\n"
    "}\n");
}

void EnumFieldGenerator::GenerateCodecCode(io::Printer* printer) {
    printer->Print(
        variables_,
        "pb::FieldCodec.ForEnum($tag$, x => (int) x, x => ($type_name$) x)");
}

EnumOneofFieldGenerator::EnumOneofFieldGenerator(
    const FieldDescriptor* descriptor, int presenceIndex, const Options *options)
  : PrimitiveOneofFieldGenerator(descriptor, presenceIndex, options) {
}

EnumOneofFieldGenerator::~EnumOneofFieldGenerator() {
}

void EnumOneofFieldGenerator::GenerateMergingCode(io::Printer* printer) {
  printer->Print(variables_, "$property_name$ = other.$property_name$;\n");
}

void EnumOneofFieldGenerator::GenerateParsingCode(io::Printer* printer) {
  // TODO(jonskeet): What about if we read the default value?
  printer->Print(
    variables_,
    "$oneof_name$_ = input.ReadEnum();\n"
    "$oneof_name$Case_ = $oneof_property_name$OneofCase.$property_name$;\n");
}

void EnumOneofFieldGenerator::GenerateSerializationCode(io::Printer* printer) {
  printer->Print(
    variables_,
    "if ($has_property_check$) {\n"
    "  output.WriteRawTag($tag_bytes$);\n"
    "  output.WriteEnum((int) $property_name$);\n"
    "}\n");
}

void EnumOneofFieldGenerator::GenerateSerializedSizeCode(io::Printer* printer) {
  printer->Print(
    variables_,
    "if ($has_property_check$) {\n"
    "  size += $tag_size$ + pb::CodedOutputStream.ComputeEnumSize((int) $property_name$);\n"
    "}\n");
}

}  // namespace csharp
}  // namespace compiler
}  // namespace protobuf
}  // namespace google