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b2bbb14bd4
If TINT_SYMBOL_STORE_DEBUG_NAME is 1, Symbol instances store a `debug_name_` member initialized with the name of the identifier they represent. This member is not exposed, but is useful for debugging purposes. Bug: tint:1331 Change-Id: Ia98e266aefc1ca26bbf30c6ece73d9eac8afdbd7 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/71780 Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Antonio Maiorano <amaiorano@google.com> Reviewed-by: Ben Clayton <bclayton@google.com>
86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
// Copyright 2020 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 "src/symbol_table.h"
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#include "src/debug.h"
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namespace tint {
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SymbolTable::SymbolTable(tint::ProgramID program_id)
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: program_id_(program_id) {}
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SymbolTable::SymbolTable(const SymbolTable&) = default;
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SymbolTable::SymbolTable(SymbolTable&&) = default;
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SymbolTable::~SymbolTable() = default;
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SymbolTable& SymbolTable::operator=(const SymbolTable& other) = default;
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SymbolTable& SymbolTable::operator=(SymbolTable&&) = default;
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Symbol SymbolTable::Register(const std::string& name) {
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TINT_ASSERT(Symbol, !name.empty());
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auto it = name_to_symbol_.find(name);
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if (it != name_to_symbol_.end())
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return it->second;
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#if TINT_SYMBOL_STORE_DEBUG_NAME
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Symbol sym(next_symbol_, program_id_, name);
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#else
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Symbol sym(next_symbol_, program_id_);
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#endif
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++next_symbol_;
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name_to_symbol_[name] = sym;
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symbol_to_name_[sym] = name;
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return sym;
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}
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Symbol SymbolTable::Get(const std::string& name) const {
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auto it = name_to_symbol_.find(name);
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return it != name_to_symbol_.end() ? it->second : Symbol();
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}
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std::string SymbolTable::NameFor(const Symbol symbol) const {
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TINT_ASSERT_PROGRAM_IDS_EQUAL(Symbol, program_id_, symbol);
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auto it = symbol_to_name_.find(symbol);
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if (it == symbol_to_name_.end()) {
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return symbol.to_str();
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}
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return it->second;
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}
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Symbol SymbolTable::New(std::string prefix /* = "" */) {
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if (prefix.empty()) {
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prefix = "tint_symbol";
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}
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auto it = name_to_symbol_.find(prefix);
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if (it == name_to_symbol_.end()) {
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return Register(prefix);
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}
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std::string name;
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size_t i = 1;
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do {
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name = prefix + "_" + std::to_string(i++);
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} while (name_to_symbol_.count(name));
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return Register(name);
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}
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} // namespace tint
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