78 lines
2.8 KiB
C
78 lines
2.8 KiB
C
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// 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 FUZZERS_TINT_AST_FUZZER_MUTATIONS_REPLACE_IDENTIFIER_H_
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#define FUZZERS_TINT_AST_FUZZER_MUTATIONS_REPLACE_IDENTIFIER_H_
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#include "fuzzers/tint_ast_fuzzer/mutation.h"
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#include "src/sem/variable.h"
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namespace tint {
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namespace fuzzers {
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namespace ast_fuzzer {
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/// @see MutationReplaceIdentifier::Apply
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class MutationReplaceIdentifier : public Mutation {
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public:
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/// @brief Constructs an instance of this mutation from a protobuf message.
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/// @param message - protobuf message
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explicit MutationReplaceIdentifier(
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protobufs::MutationReplaceIdentifier message);
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/// @brief Constructor.
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/// @param use_id - the id of a variable user.
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/// @param replacement_id - the id of a variable to replace the `use_id`.
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MutationReplaceIdentifier(uint32_t use_id, uint32_t replacement_id);
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/// @copybrief Mutation::IsApplicable
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///
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/// The mutation is applicable iff:
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/// - `use_id` is a valid id of an `ast::IdentifierExpression`, that
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/// references a variable.
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/// - `replacement_id` is a valid id of an `ast::Variable`.
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/// - The identifier expression doesn't reference the variable of a
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/// `replacement_id`.
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/// - The variable with `replacement_id` is in scope of an identifier
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/// expression with `use_id`.
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/// - The identifier expression and the variable have the same type.
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///
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/// @copydetails Mutation::IsApplicable
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bool IsApplicable(const tint::Program& program,
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const NodeIdMap& node_id_map) const override;
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/// @copybrief Mutation::Apply
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///
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/// Replaces the use of an identifier expression with `use_id` with a newly
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/// created identifier expression, that references a variable with
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/// `replacement_id`. The newly created identifier expression will have the
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/// same id as the old one (i.e. `use_id`).
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///
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/// @copydetails Mutation::Apply
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void Apply(const NodeIdMap& node_id_map,
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tint::CloneContext* clone_context,
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NodeIdMap* new_node_id_map) const override;
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protobufs::Mutation ToMessage() const override;
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private:
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protobufs::MutationReplaceIdentifier message_;
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};
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} // namespace ast_fuzzer
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} // namespace fuzzers
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} // namespace tint
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#endif // FUZZERS_TINT_AST_FUZZER_MUTATIONS_REPLACE_IDENTIFIER_H_
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