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/*
* Copyright 2017 WebAssembly Community Group participants
*
* 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 WABT_BINARY_ERROR_HANDLER_H_
#define WABT_BINARY_ERROR_HANDLER_H_
#include <cstdint>
#include <cstdio>
#include <string>
#include "common.h"
namespace wabt {
class BinaryErrorHandler {
public:
virtual ~BinaryErrorHandler() {}
// Returns true if the error was handled.
virtual bool OnError(Offset offset, const std::string& error) = 0;
std::string DefaultErrorMessage(Offset offset, const std::string& error);
};
class BinaryErrorHandlerFile : public BinaryErrorHandler {
public:
enum class PrintHeader {
Never,
Once,
Always,
};
BinaryErrorHandlerFile(FILE* file = stderr,
const std::string& header = std::string(),
PrintHeader print_header = PrintHeader::Never);
bool OnError(Offset offset, const std::string& error) override;
private:
void PrintErrorHeader();
FILE* file_;
std::string header_;
PrintHeader print_header_;
};
class BinaryErrorHandlerBuffer : public BinaryErrorHandler {
public:
BinaryErrorHandlerBuffer() = default;
bool OnError(Offset offset, const std::string& error) override;
const std::string& buffer() const { return buffer_; }
private:
std::string buffer_;
};
} // namespace wabt
#endif // WABT_BINARY_ERROR_HANDLER_H_
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