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/*
* Copyright 2023 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLATBUFFERS_CODE_GENERATOR_H_
#define FLATBUFFERS_CODE_GENERATOR_H_
#include <string>
#include "flatbuffers/idl.h"
namespace flatbuffers {
struct CodeGenOptions {
std::string output_path;
};
// A code generator interface for producing converting flatbuffer schema into
// code.
class CodeGenerator {
public:
virtual ~CodeGenerator() = default;
enum Status {
OK = 0,
ERROR = 1,
FAILED_VERIFICATION = 2,
NOT_IMPLEMENTED = 3
};
std::string status_detail;
// Generate code from the provided `parser`.
//
// DEPRECATED: prefer using the other overload of GenerateCode for bfbs.
virtual Status GenerateCode(const Parser &parser, const std::string &path,
const std::string &filename) = 0;
// Generate code from the provided `parser` and place it in the output.
virtual Status GenerateCodeString(const Parser &parser,
const std::string &filename,
std::string &output) {
(void)parser;
(void)filename;
(void)output;
return Status::NOT_IMPLEMENTED;
}
// Generate code from the provided `buffer` of given `length`. The buffer is a
// serialized reflection.fbs.
virtual Status GenerateCode(const uint8_t *buffer, int64_t length,
const CodeGenOptions &options) = 0;
virtual Status GenerateMakeRule(const Parser &parser, const std::string &path,
const std::string &filename,
std::string &output) = 0;
virtual Status GenerateGrpcCode(const Parser &parser, const std::string &path,
const std::string &filename) = 0;
virtual Status GenerateRootFile(const Parser &parser,
const std::string &path) = 0;
virtual bool IsSchemaOnly() const = 0;
virtual bool SupportsBfbsGeneration() const = 0;
virtual bool SupportsRootFileGeneration() const = 0;
virtual IDLOptions::Language Language() const = 0;
virtual std::string LanguageName() const = 0;
protected:
CodeGenerator() = default;
private:
// Copying is not supported.
CodeGenerator(const CodeGenerator &) = delete;
CodeGenerator &operator=(const CodeGenerator &) = delete;
};
} // namespace flatbuffers
#endif // FLATBUFFERS_CODE_GENERATOR_H_
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