1// Protocol Buffers - Google's data interchange format
2// Copyright 2008 Google Inc.  All rights reserved.
3// http://code.google.com/p/protobuf/
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions are
7// met:
8//
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10// notice, this list of conditions and the following disclaimer.
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13// in the documentation and/or other materials provided with the
14// distribution.
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16// contributors may be used to endorse or promote products derived from
17// this software without specific prior written permission.
18//
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20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31// Author: kenton@google.com (Kenton Varda)
32//  Based on original Protocol Buffers design by
33//  Sanjay Ghemawat, Jeff Dean, and others.
34
35#include <google/protobuf/compiler/java/java_field.h>
36#include <google/protobuf/compiler/java/java_helpers.h>
37#include <google/protobuf/compiler/java/java_primitive_field.h>
38#include <google/protobuf/compiler/java/java_enum_field.h>
39#include <google/protobuf/compiler/java/java_message_field.h>
40#include <google/protobuf/stubs/common.h>
41
42namespace google {
43namespace protobuf {
44namespace compiler {
45namespace java {
46
47FieldGenerator::~FieldGenerator() {}
48
49void FieldGenerator::GenerateParsingCodeFromPacked(io::Printer* printer) const {
50  // Reaching here indicates a bug. Cases are:
51  //   - This FieldGenerator should support packing, but this method should be
52  //     overridden.
53  //   - This FieldGenerator doesn't support packing, and this method should
54  //     never have been called.
55  GOOGLE_LOG(FATAL) << "GenerateParsingCodeFromPacked() "
56             << "called on field generator that does not support packing.";
57}
58
59FieldGeneratorMap::FieldGeneratorMap(const Descriptor* descriptor)
60  : descriptor_(descriptor),
61    field_generators_(
62      new scoped_ptr<FieldGenerator>[descriptor->field_count()]),
63    extension_generators_(
64      new scoped_ptr<FieldGenerator>[descriptor->extension_count()]) {
65
66  // Construct all the FieldGenerators.
67  for (int i = 0; i < descriptor->field_count(); i++) {
68    field_generators_[i].reset(MakeGenerator(descriptor->field(i)));
69  }
70  for (int i = 0; i < descriptor->extension_count(); i++) {
71    extension_generators_[i].reset(MakeGenerator(descriptor->extension(i)));
72  }
73}
74
75FieldGenerator* FieldGeneratorMap::MakeGenerator(const FieldDescriptor* field) {
76  if (field->is_repeated()) {
77    switch (GetJavaType(field)) {
78      case JAVATYPE_MESSAGE:
79        return new RepeatedMessageFieldGenerator(field);
80      case JAVATYPE_ENUM:
81        return new RepeatedEnumFieldGenerator(field);
82      default:
83        return new RepeatedPrimitiveFieldGenerator(field);
84    }
85  } else {
86    switch (GetJavaType(field)) {
87      case JAVATYPE_MESSAGE:
88        return new MessageFieldGenerator(field);
89      case JAVATYPE_ENUM:
90        return new EnumFieldGenerator(field);
91      default:
92        return new PrimitiveFieldGenerator(field);
93    }
94  }
95}
96
97FieldGeneratorMap::~FieldGeneratorMap() {}
98
99const FieldGenerator& FieldGeneratorMap::get(
100    const FieldDescriptor* field) const {
101  GOOGLE_CHECK_EQ(field->containing_type(), descriptor_);
102  return *field_generators_[field->index()];
103}
104
105const FieldGenerator& FieldGeneratorMap::get_extension(int index) const {
106  return *extension_generators_[index];
107}
108
109}  // namespace java
110}  // namespace compiler
111}  // namespace protobuf
112}  // namespace google
113