1 // Protocol Buffers - Google's data interchange format
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31 // Author: kenton@google.com (Kenton Varda)
33 #ifndef GOOGLE_PROTOBUF_COMPILER_MOCK_CODE_GENERATOR_H__
34 #define GOOGLE_PROTOBUF_COMPILER_MOCK_CODE_GENERATOR_H__
38 #include <google/protobuf/compiler/code_generator.h>
43 } // namespace protobuf
50 // A mock CodeGenerator, used by command_line_interface_unittest. This is in
51 // its own file so that it can be used both directly and as a plugin.
53 // Generate() produces some output which can be checked by ExpectCalled(). The
54 // generator can run in a different process (e.g. a plugin).
56 // If the parameter is "insert=NAMES", the MockCodeGenerator will insert lines
57 // into the files generated by other MockCodeGenerators instead of creating
58 // its own file. NAMES is a comma-separated list of the names of those other
59 // MockCodeGenerators.
61 // MockCodeGenerator will also modify its behavior slightly if the input file
62 // contains a message type with one of the following names:
63 // MockCodeGenerator_Error: Causes Generate() to return false and set the
64 // error message to "Saw message type MockCodeGenerator_Error."
65 // MockCodeGenerator_Exit: Generate() prints "Saw message type
66 // MockCodeGenerator_Exit." to stderr and then calls exit(123).
67 // MockCodeGenerator_Abort: Generate() prints "Saw message type
68 // MockCodeGenerator_Abort." to stderr and then calls abort().
69 // MockCodeGenerator_HasSourceCodeInfo: Causes Generate() to abort after
70 // printing "Saw message type MockCodeGenerator_HasSourceCodeInfo: FOO." to
71 // stderr, where FOO is "1" if the supplied FileDescriptorProto has source
72 // code info, and "0" otherwise.
73 // MockCodeGenerator_Annotate: Generate() will add annotations to its output
74 // that can later be verified with CheckGeneratedAnnotations.
75 class MockCodeGenerator : public CodeGenerator {
77 MockCodeGenerator(const std::string& name);
78 virtual ~MockCodeGenerator();
80 // Expect (via gTest) that a MockCodeGenerator with the given name was called
81 // with the given parameters by inspecting the output location.
83 // |insertions| is a comma-separated list of names of MockCodeGenerators which
84 // should have inserted lines into this file.
85 // |parsed_file_list| is a comma-separated list of names of the files
86 // that are being compiled together in this run.
87 static void ExpectGenerated(const std::string& name,
88 const std::string& parameter,
89 const std::string& insertions,
90 const std::string& file,
91 const std::string& first_message_name,
92 const std::string& parsed_file_list,
93 const std::string& output_directory);
95 // Checks that the correct text ranges were annotated by the
96 // MockCodeGenerator_Annotate directive.
97 static void CheckGeneratedAnnotations(const std::string& name,
98 const std::string& file,
99 const std::string& output_directory);
101 // Get the name of the file which would be written by the given generator.
102 static std::string GetOutputFileName(const std::string& generator_name,
103 const FileDescriptor* file);
104 static std::string GetOutputFileName(const std::string& generator_name,
105 const std::string& file);
107 // implements CodeGenerator ----------------------------------------
109 virtual bool Generate(const FileDescriptor* file,
110 const std::string& parameter, GeneratorContext* context,
111 std::string* error) const;
116 static std::string GetOutputFileContent(const std::string& generator_name,
117 const std::string& parameter,
118 const FileDescriptor* file,
119 GeneratorContext* context);
120 static std::string GetOutputFileContent(
121 const std::string& generator_name, const std::string& parameter,
122 const std::string& file, const std::string& parsed_file_list,
123 const std::string& first_message_name);
126 } // namespace compiler
127 } // namespace protobuf
128 } // namespace google
130 #endif // GOOGLE_PROTOBUF_COMPILER_MOCK_CODE_GENERATOR_H__