71 lines
1.9 KiB
C
71 lines
1.9 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_H_
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#define SRC_SYMBOL_H_
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#include <string>
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namespace tint {
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/// A symbol representing a string in the system
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class Symbol {
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public:
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/// Constructor
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/// An invalid symbol
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Symbol();
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/// Constructor
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/// @param val the symbol value
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explicit Symbol(uint32_t val);
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/// Copy constructor
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/// @param o the symbol to copy
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Symbol(const Symbol& o);
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/// Move constructor
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/// @param o the symbol to move
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Symbol(Symbol&& o);
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/// Destructor
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~Symbol();
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/// Copy assignment
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/// @param o the other symbol
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/// @returns the symbol after doing the copy
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Symbol& operator=(const Symbol& o);
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/// Move assignment
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/// @param o the other symbol
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/// @returns teh symbol after doing the move
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Symbol& operator=(Symbol&& o);
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/// Comparison operator
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/// @param o the other symbol
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/// @returns true if the symbols are the same
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bool operator==(const Symbol& o) const;
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/// @returns true if the symbol is valid
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bool IsValid() const { return val_ != static_cast<uint32_t>(-1); }
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/// @returns the value for the symbol
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uint32_t value() const { return val_; }
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/// Convert the symbol to a string
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/// @return the string representation of the symbol
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std::string to_str() const;
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private:
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uint32_t val_ = static_cast<uint32_t>(-1);
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};
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} // namespace tint
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#endif // SRC_SYMBOL_H_
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