javanano_field.h revision e74fe623e115237968a3de1143d7cdb4df710858 
1// Protocol Buffers - Google's data interchange format
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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#ifndef GOOGLE_PROTOBUF_COMPILER_JAVA_FIELD_H__
36#define GOOGLE_PROTOBUF_COMPILER_JAVA_FIELD_H__
37
38#include <string>
39#include <google/protobuf/stubs/common.h>
40#include <google/protobuf/descriptor.h>
41#include <google/protobuf/compiler/javanano/javanano_params.h>
42
43namespace google {
44namespace protobuf {
45  namespace io {
46    class Printer;             // printer.h
47  }
48}
49
50namespace protobuf {
51namespace compiler {
52namespace javanano {
53
54class FieldGenerator {
55 public:
56  //FieldGenerator() {}
57  FieldGenerator(const Params& params) : params_(params) {}
58  virtual ~FieldGenerator();
59
60  virtual void GenerateMembers(io::Printer* printer) const = 0;
61  virtual void GenerateClearCode(io::Printer* printer) const = 0;
62  virtual void GenerateMergingCode(io::Printer* printer) const = 0;
63  virtual void GenerateSerializationCode(io::Printer* printer) const = 0;
64  virtual void GenerateSerializedSizeCode(io::Printer* printer) const = 0;
65
66  virtual string GetBoxedType() const = 0;
67
68 protected:
69  const Params& params_;
70 private:
71  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FieldGenerator);
72};
73
74// Convenience class which constructs FieldGenerators for a Descriptor.
75class FieldGeneratorMap {
76 public:
77  explicit FieldGeneratorMap(const Descriptor* descriptor, const Params &params);
78  ~FieldGeneratorMap();
79
80  const FieldGenerator& get(const FieldDescriptor* field) const;
81  const FieldGenerator& get_extension(int index) const;
82  int total_bits() const { return total_bits_; }
83
84 private:
85  const Descriptor* descriptor_;
86  scoped_array<scoped_ptr<FieldGenerator> > field_generators_;
87  scoped_array<scoped_ptr<FieldGenerator> > extension_generators_;
88  int total_bits_;
89
90  static FieldGenerator* MakeGenerator(const FieldDescriptor* field,
91      const Params &params, int* next_has_bit_index);
92
93  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(FieldGeneratorMap);
94};
95
96}  // namespace javanano
97}  // namespace compiler
98}  // namespace protobuf
99
100}  // namespace google
101#endif  // GOOGLE_PROTOBUF_COMPILER_JAVA_FIELD_H__
102