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+// Copyright (c) 2019 Google LLC
+//
+// 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 SOURCE_FUZZ_TRANSFORMATION_COMPOSITE_CONSTRUCT_H_
+#define SOURCE_FUZZ_TRANSFORMATION_COMPOSITE_CONSTRUCT_H_
+
+#include "source/fuzz/fact_manager.h"
+#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
+#include "source/fuzz/transformation.h"
+#include "source/opt/ir_context.h"
+
+namespace spvtools {
+namespace fuzz {
+
+class TransformationCompositeConstruct : public Transformation {
+ public:
+ explicit TransformationCompositeConstruct(
+ const protobufs::TransformationCompositeConstruct& message);
+
+ TransformationCompositeConstruct(
+ uint32_t composite_type_id, std::vector<uint32_t> component,
+ const protobufs::InstructionDescriptor& instruction_to_insert_before,
+ uint32_t fresh_id);
+
+ // - |message_.fresh_id| must not be used by the module.
+ // - |message_.composite_type_id| must be the id of a composite type
+ // - The elements of |message_.component| must be result ids that are
+ // suitable for constructing an element of the given composite type, in
+ // order
+ // - The elements of |message_.component| must not be the target of any
+ // decorations.
+ // - |message_.base_instruction_id| must be the result id of an instruction
+ // 'base' in some block 'blk'.
+ // - 'blk' must contain an instruction 'inst' located |message_.offset|
+ // instructions after 'base' (if |message_.offset| = 0 then 'inst' =
+ // 'base').
+ // - It must be legal to insert an OpCompositeConstruct instruction directly
+ // before 'inst'.
+ // - Each element of |message_.component| must be available directly before
+ // 'inst'.
+ bool IsApplicable(opt::IRContext* context,
+ const FactManager& fact_manager) const override;
+
+ // Inserts a new OpCompositeConstruct instruction, with id
+ // |message_.fresh_id|, directly before the instruction identified by
+ // |message_.base_instruction_id| and |message_.offset|. The instruction
+ // creates a composite of type |message_.composite_type_id| using the ids of
+ // |message_.component|.
+ void Apply(opt::IRContext* context, FactManager* fact_manager) const override;
+
+ protobufs::Transformation ToMessage() const override;
+
+ private:
+ // Helper to decide whether the components of the transformation are suitable
+ // for constructing an array of the given type.
+ bool ComponentsForArrayConstructionAreOK(
+ opt::IRContext* context, const opt::analysis::Array& array_type) const;
+
+ // Similar, but for matrices.
+ bool ComponentsForMatrixConstructionAreOK(
+ opt::IRContext* context, const opt::analysis::Matrix& matrix_type) const;
+
+ // Similar, but for structs.
+ bool ComponentsForStructConstructionAreOK(
+ opt::IRContext* context, const opt::analysis::Struct& struct_type) const;
+
+ // Similar, but for vectors.
+ bool ComponentsForVectorConstructionAreOK(
+ opt::IRContext* context, const opt::analysis::Vector& vector_type) const;
+
+ protobufs::TransformationCompositeConstruct message_;
+};
+
+} // namespace fuzz
+} // namespace spvtools
+
+#endif // SOURCE_FUZZ_TRANSFORMATION_COMPOSITE_CONSTRUCT_H_