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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_TRANSFORM_MANAGER_H_
#define SRC_TRANSFORM_MANAGER_H_
#include <memory>
#include <utility>
#include <vector>
#include "src/transform/transform.h"
namespace tint {
namespace transform {
/// A collection of Transforms that act as a single Transform.
/// The inner transforms will execute in the appended order.
/// If any inner transform fails the manager will return immediately and
/// the error can be retrieved with the Output's diagnostics.
class Manager : public Castable<Manager, Transform> {
public:
/// Constructor
Manager();
~Manager() override;
/// Add pass to the manager
/// @param transform the transform to append
void append(std::unique_ptr<Transform> transform) {
transforms_.push_back(std::move(transform));
}
/// Add pass to the manager of type `T`, constructed with the provided
/// arguments.
/// @param args the arguments to forward to the `T` constructor
template <typename T, typename... ARGS>
void Add(ARGS&&... args) {
transforms_.emplace_back(std::make_unique<T>(std::forward<ARGS>(args)...));
}
/// Runs the transforms on `program`, returning the transformation result.
/// @param program the source program to transform
/// @param data optional extra transform-specific input data
/// @returns the transformed program and diagnostics
Output Run(const Program* program, const DataMap& data = {}) const override;
private:
std::vector<std::unique_ptr<Transform>> transforms_;
};
} // namespace transform
} // namespace tint
#endif // SRC_TRANSFORM_MANAGER_H_