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c6b381495d
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>
71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
// Copyright 2021 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_TINT_TRANSFORM_CALCULATE_ARRAY_LENGTH_H_
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#define SRC_TINT_TRANSFORM_CALCULATE_ARRAY_LENGTH_H_
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#include <string>
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#include "src/tint/ast/internal_attribute.h"
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#include "src/tint/transform/transform.h"
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// Forward declarations
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namespace tint {
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class CloneContext;
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} // namespace tint
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namespace tint::transform {
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/// CalculateArrayLength is a transform used to replace calls to arrayLength()
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/// with a value calculated from the size of the storage buffer.
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///
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/// @note Depends on the following transforms to have been run first:
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/// * SimplifyPointers
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class CalculateArrayLength final : public Castable<CalculateArrayLength, Transform> {
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public:
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/// BufferSizeIntrinsic is an InternalAttribute that's applied to intrinsic
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/// functions used to obtain the runtime size of a storage buffer.
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class BufferSizeIntrinsic final : public Castable<BufferSizeIntrinsic, ast::InternalAttribute> {
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public:
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/// Constructor
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/// @param program_id the identifier of the program that owns this node
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/// @param nid the unique node identifier
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BufferSizeIntrinsic(ProgramID program_id, ast::NodeID nid);
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/// Destructor
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~BufferSizeIntrinsic() override;
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/// @return "buffer_size"
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std::string InternalName() const override;
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/// Performs a deep clone of this object using the CloneContext `ctx`.
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/// @param ctx the clone context
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/// @return the newly cloned object
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const BufferSizeIntrinsic* Clone(CloneContext* ctx) const override;
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};
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/// Constructor
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CalculateArrayLength();
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/// Destructor
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~CalculateArrayLength() override;
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/// @copydoc Transform::Apply
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ApplyResult Apply(const Program* program,
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const DataMap& inputs,
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DataMap& outputs) const override;
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};
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} // namespace tint::transform
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#endif // SRC_TINT_TRANSFORM_CALCULATE_ARRAY_LENGTH_H_
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