javanano_enum.cc revision f4e01452f159ae6b53f5edd25fa647ca2919ae10 
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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#include <map>
36#include <string>
37
38#include <google/protobuf/compiler/javanano/javanano_params.h>
39#include <google/protobuf/compiler/javanano/javanano_enum.h>
40#include <google/protobuf/compiler/javanano/javanano_helpers.h>
41#include <google/protobuf/io/printer.h>
42#include <google/protobuf/descriptor.pb.h>
43#include <google/protobuf/stubs/strutil.h>
44
45namespace google {
46namespace protobuf {
47namespace compiler {
48namespace javanano {
49
50EnumGenerator::EnumGenerator(const EnumDescriptor* descriptor, const Params& params)
51  : params_(params), descriptor_(descriptor) {
52  for (int i = 0; i < descriptor_->value_count(); i++) {
53    const EnumValueDescriptor* value = descriptor_->value(i);
54    const EnumValueDescriptor* canonical_value =
55      descriptor_->FindValueByNumber(value->number());
56
57    if (value == canonical_value) {
58      canonical_values_.push_back(value);
59    } else {
60      Alias alias;
61      alias.value = value;
62      alias.canonical_value = canonical_value;
63      aliases_.push_back(alias);
64    }
65  }
66}
67
68EnumGenerator::~EnumGenerator() {}
69
70void EnumGenerator::Generate(io::Printer* printer) {
71  printer->Print("// enum $classname$\n", "classname", descriptor_->name());
72  bool is_own_file = params_.java_multiple_files() ||
73      ((descriptor_->containing_type() == NULL) &&
74       !params_.has_java_outer_classname(descriptor_->file()->name()));
75
76  if (is_own_file) {
77    printer->Print("public final class $classname$ {\n", "classname",
78        descriptor_->name());
79    printer->Indent();
80    printer->Print("private $classname$() {}\n", "classname",
81        descriptor_->name());
82  }
83  for (int i = 0; i < canonical_values_.size(); i++) {
84    map<string, string> vars;
85    vars["name"] = RenameJavaKeywords(canonical_values_[i]->name());
86    vars["canonical_value"] = SimpleItoa(canonical_values_[i]->number());
87    printer->Print(vars,
88      "public static final int $name$ = $canonical_value$;\n");
89  }
90
91  // -----------------------------------------------------------------
92
93  for (int i = 0; i < aliases_.size(); i++) {
94    map<string, string> vars;
95    vars["name"] = RenameJavaKeywords(aliases_[i].value->name());
96    vars["canonical_name"] = aliases_[i].canonical_value->name();
97    printer->Print(vars,
98      "public static final int $name$ = $canonical_name$;\n");
99  }
100
101  if (is_own_file) {
102    printer->Outdent();
103    printer->Print("}");
104  }
105  printer->Print("\n");
106}
107
108}  // namespace javanano
109}  // namespace compiler
110}  // namespace protobuf
111}  // namespace google
112