66 lines
1.8 KiB
C++
66 lines
1.8 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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#include "fuzzers/tint_ast_fuzzer/node_id_map.h"
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#include <cassert>
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namespace tint {
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namespace fuzzers {
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namespace ast_fuzzer {
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NodeIdMap::NodeIdMap() = default;
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NodeIdMap::NodeIdMap(const Program& program) : NodeIdMap() {
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for (const auto* node : program.ASTNodes().Objects()) {
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Add(node, TakeFreshId());
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}
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}
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NodeIdMap::IdType NodeIdMap::GetId(const ast::Node* node) const {
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auto it = node_to_id_.find(node);
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return it == node_to_id_.end() ? 0 : it->second;
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}
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const ast::Node* NodeIdMap::GetNode(IdType id) const {
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auto it = id_to_node_.find(id);
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return it == id_to_node_.end() ? nullptr : it->second;
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}
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void NodeIdMap::Add(const ast::Node* node, IdType id) {
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assert(!node_to_id_.count(node) && "The node already exists in the map");
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assert(IdIsFreshAndValid(id) && "Id already exists in the map or Id is zero");
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assert(node && "`node` can't be a nullptr");
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node_to_id_[node] = id;
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id_to_node_[id] = node;
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if (id >= fresh_id_) {
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fresh_id_ = id + 1;
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}
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}
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bool NodeIdMap::IdIsFreshAndValid(IdType id) {
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return id && !id_to_node_.count(id);
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}
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NodeIdMap::IdType NodeIdMap::TakeFreshId() {
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assert(fresh_id_ != 0 && "`NodeIdMap` id has overflowed");
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return fresh_id_++;
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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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