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// Copyright 2020 The Tint Authors.
//
// 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 SRC_READER_READER_H_
#define SRC_READER_READER_H_
#include <string>
#include "src/program.h"
namespace tint {
namespace reader {
/// Base class for input readers
class Reader {
public:
virtual ~Reader();
/// Parses the input data
/// @returns true if the parse was successful
virtual bool Parse() = 0;
/// @returns true if an error was encountered.
bool has_error() const { return diags_.contains_errors(); }
/// @returns the parser error string
std::string error() const {
diag::Formatter formatter{{false, false, false, false}};
return formatter.format(diags_);
}
/// @returns the full list of diagnostic messages.
const diag::List& diagnostics() const { return diags_; }
/// @returns the program. The program builder in the parser will be reset
/// after this.
virtual Program program() = 0;
protected:
/// Constructor
Reader();
/// Sets the diagnostic messages
/// @param diags the list of diagnostic messages
void set_diagnostics(const diag::List& diags) { diags_ = diags; }
/// All diagnostic messages from the reader.
diag::List diags_;
};
} // namespace reader
} // namespace tint
#endif // SRC_READER_READER_H_