dawn-cmake/src/transform/unshadow.h
Ben Clayton b05e185a36 resolver: Support shadowing
Add transform::Unshadow to renamed shadowed symbols. Required by a
number of other transforms.

Replace Resolver symbol resolution with dep-graph.

The dependency graph now performs full symbol resolution before the
regular resolver pass.
Make use of this instead of duplicating the effort.

Simplfies code, and actually performs variable shadowing consistently.

Fixed: tint:819
Bug: tint:1266
Change-Id: I595d1812aebe1d79d2d32e724ff90de36e74cf4b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/70523
Reviewed-by: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
2021-11-23 20:45:51 +00:00

49 lines
1.5 KiB
C++

// 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_TRANSFORM_UNSHADOW_H_
#define SRC_TRANSFORM_UNSHADOW_H_
#include "src/transform/transform.h"
namespace tint {
namespace transform {
/// Unshadow is a Transform that renames any variables that shadow another
/// variable.
class Unshadow : public Castable<Unshadow, Transform> {
public:
/// Constructor
Unshadow();
/// Destructor
~Unshadow() override;
protected:
struct State;
/// 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) override;
};
} // namespace transform
} // namespace tint
#endif // SRC_TRANSFORM_UNSHADOW_H_