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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_WRITER_MSL_NAMER_H_
#define SRC_WRITER_MSL_NAMER_H_
#include <string>
#include <unordered_map>
#include <unordered_set>
namespace tint {
namespace writer {
namespace msl {
/// Remaps maps names to avoid reserved words and collisions for MSL.
class Namer {
public:
/// Constructor
Namer();
~Namer();
/// Returns a sanitized version of `name`
/// @param name the name to sanitize
/// @returns the sanitized version of `name`
std::string NameFor(const std::string& name);
/// Registers a remapped name.
/// @param name the name to register
void RegisterRemappedName(const std::string& name);
/// Returns if the given name has been mapped alread
/// @param name the name to check
/// @returns true if the name has been mapped
bool IsMapped(const std::string& name);
private:
/// Map of original name to new name. The two names may be the same.
std::unordered_map<std::string, std::string> name_map_;
// The list of names taken by the remapper
std::unordered_set<std::string> remapped_names_;
};
} // namespace msl
} // namespace writer
} // namespace tint
#endif // SRC_WRITER_MSL_NAMER_H_