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b5cd10c7bd
Allows transforms to assert their dependencies have been run before they are. Also allows the backends to validate that their sanitizers have been run before they're used. Change-Id: I1e97afe06f9e7371283bade54bbb2e2c41f87a00 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/55442 Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Ben Clayton <bclayton@google.com> Reviewed-by: James Price <jrprice@google.com>
88 lines
2.9 KiB
C++
88 lines
2.9 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_TRANSFORM_WRAP_ARRAYS_IN_STRUCTS_H_
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#define SRC_TRANSFORM_WRAP_ARRAYS_IN_STRUCTS_H_
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#include <string>
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#include <unordered_map>
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#include "src/transform/transform.h"
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// Forward declarations
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namespace tint {
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namespace ast {
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class Type;
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} // namespace ast
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} // namespace tint
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namespace tint {
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namespace transform {
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/// WrapArraysInStructs is a transform that replaces all array types with a
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/// structure holding a single field of that array type.
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/// Array index expressions and constructors are also adjusted to deal with this
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/// wrapping.
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/// This transform helps with backends that cannot directly return arrays or use
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/// them as parameters.
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class WrapArraysInStructs : public Castable<WrapArraysInStructs, Transform> {
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public:
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/// Constructor
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WrapArraysInStructs();
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/// Destructor
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~WrapArraysInStructs() override;
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protected:
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/// Runs the transform using the CloneContext built for transforming a
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/// program. Run() is responsible for calling Clone() on the CloneContext.
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/// @param ctx the CloneContext primed with the input program and
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/// ProgramBuilder
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/// @param inputs optional extra transform-specific input data
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/// @param outputs optional extra transform-specific output data
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void Run(CloneContext& ctx, const DataMap& inputs, DataMap& outputs) override;
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private:
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struct WrappedArrayInfo {
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WrappedArrayInfo();
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WrappedArrayInfo(const WrappedArrayInfo&);
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~WrappedArrayInfo();
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Symbol wrapper_name;
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std::function<ast::Type*(CloneContext&)> array_type;
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operator bool() { return wrapper_name.IsValid(); }
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};
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/// WrapArray wraps the fixed-size array type in a new structure (if it hasn't
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/// already been wrapped). WrapArray will recursively wrap arrays-of-arrays.
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/// The new structure will be added to module-scope type declarations of
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/// `ctx.dst`.
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/// @param ctx the CloneContext
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/// @param wrapped_arrays a map of src array type to the wrapped structure
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/// name
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/// @param array the array type
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/// @return the name of the structure that wraps the array, or an invalid
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/// Symbol if this array should not be wrapped
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WrappedArrayInfo WrapArray(
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CloneContext& ctx,
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std::unordered_map<const sem::Array*, WrappedArrayInfo>& wrapped_arrays,
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const sem::Array* array) const;
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};
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} // namespace transform
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} // namespace tint
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#endif // SRC_TRANSFORM_WRAP_ARRAYS_IN_STRUCTS_H_
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