61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
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// 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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#ifndef SRC_SYMBOL_TABLE_H_
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#define SRC_SYMBOL_TABLE_H_
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#include <string>
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#include <unordered_map>
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#include "src/symbol.h"
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namespace tint {
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/// Holds mappings from symbols to their associated string names
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class SymbolTable {
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public:
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/// Constructor
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SymbolTable();
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/// Move Constructor
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SymbolTable(SymbolTable&&);
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/// Destructor
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~SymbolTable();
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/// Move assignment
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/// @param other the symbol table to move
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/// @returns the symbol table
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SymbolTable& operator=(SymbolTable&& other);
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/// Registers a name into the symbol table, returning the Symbol.
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/// @param name the name to register
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/// @returns the symbol representing the given name
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Symbol Register(const std::string& name);
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/// Returns the name for the given symbol
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/// @param symbol the symbol to retrieve the name for
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/// @returns the symbol name or "" if not found
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std::string NameFor(const Symbol symbol) const;
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private:
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// The value to be associated to the next registered symbol table entry.
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uint32_t next_symbol_ = 1;
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std::unordered_map<uint32_t, std::string> symbol_to_name_;
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std::unordered_map<std::string, Symbol> name_to_symbol_;
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};
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} // namespace tint
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#endif // SRC_SYMBOL_TABLE_H_
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