dawn-cmake/src/tint/transform/remove_continue_in_switch.h
Ben Clayton c6b381495d tint/transform: Refactor transforms
Replace the ShouldRun() method with Apply() which will do the
transformation if it needs to be done, otherwise returns
'SkipTransform'.

This reduces a bunch of duplicated scanning between the old ShouldRun()
and Transform().

This change also adjusts code style to make the transforms more
consistent.

Change-Id: I9a6b10cb8b4ed62676b12ef30fb7764d363386c6
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/107681
Reviewed-by: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
2022-11-03 08:41:19 +00:00

46 lines
1.5 KiB
C++

// Copyright 2022 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_REMOVE_CONTINUE_IN_SWITCH_H_
#define SRC_TINT_TRANSFORM_REMOVE_CONTINUE_IN_SWITCH_H_
#include "src/tint/transform/transform.h"
namespace tint::transform {
/// This transform replaces continue statements in switch cases with setting a
/// bool variable, and checking if the variable is set after the switch to
/// continue. It is necessary to work around FXC "error X3708: continue cannot
/// be used in a switch". See crbug.com/tint/1080.
class RemoveContinueInSwitch final : public Castable<RemoveContinueInSwitch, Transform> {
public:
/// Constructor
RemoveContinueInSwitch();
/// Destructor
~RemoveContinueInSwitch() override;
/// @copydoc Transform::Apply
ApplyResult Apply(const Program* program,
const DataMap& inputs,
DataMap& outputs) const override;
private:
struct State;
};
} // namespace tint::transform
#endif // SRC_TINT_TRANSFORM_REMOVE_CONTINUE_IN_SWITCH_H_