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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_TINT_LANG_WGSL_AST_TRANSFORM_MANAGER_H_
#define SRC_TINT_LANG_WGSL_AST_TRANSFORM_MANAGER_H_
#include <memory>
#include <utility>
#include <vector>
#include "src/tint/lang/wgsl/ast/transform/data.h"
#include "src/tint/lang/wgsl/ast/transform/transform.h"
#include "src/tint/lang/wgsl/program/program.h"
namespace tint::ast::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:
/// Constructor
Manager();
~Manager();
/// 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` initializer
template <typename T, typename... ARGS>
void Add(ARGS&&... args) {
transforms_.emplace_back(std::make_unique<T>(std::forward<ARGS>(args)...));
}
/// Runs the transforms on @p program, returning the transformed clone of @p program.
/// @param program the source program to transform
/// @param inputs optional extra transform-specific input data
/// @param outputs optional extra transform-specific output data
/// @returns the transformed program
Program Run(const Program* program, const DataMap& inputs, DataMap& outputs) const;
private:
std::vector<std::unique_ptr<Transform>> transforms_;
};
} // namespace tint::ast::transform
#endif // SRC_TINT_LANG_WGSL_AST_TRANSFORM_MANAGER_H_