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// Copyright 2021 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_TRANSFORM_SINGLE_ENTRY_POINT_H_
#define SRC_TINT_TRANSFORM_SINGLE_ENTRY_POINT_H_
#include <string>
#include "src/tint/transform/transform.h"
namespace tint::transform {
/// Strip all but one entry point a module.
///
/// All module-scope variables, types, and functions that are not used by the
/// target entry point will also be removed.
class SingleEntryPoint : public Castable<SingleEntryPoint, Transform> {
public:
/// Configuration options for the transform
struct Config : public Castable<Config, Data> {
/// Constructor
/// @param entry_point the name of the entry point to keep
explicit Config(std::string entry_point = "");
/// Copy constructor
Config(const Config&);
/// Destructor
~Config() override;
/// Assignment operator
/// @returns this Config
Config& operator=(const Config&);
/// The name of the entry point to keep.
std::string entry_point_name;
};
/// Constructor
SingleEntryPoint();
/// Destructor
~SingleEntryPoint() override;
protected:
/// Runs the transform using the CloneContext built for transforming a
/// program. Run() is responsible for calling Clone() on the CloneContext.
/// @param ctx the CloneContext primed with the input program and
/// ProgramBuilder
/// @param inputs optional extra transform-specific input data
/// @param outputs optional extra transform-specific output data
void Run(CloneContext& ctx, const DataMap& inputs, DataMap& outputs) const override;
};
} // namespace tint::transform
#endif // SRC_TINT_TRANSFORM_SINGLE_ENTRY_POINT_H_