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Last change
on this file since 737bf73 was 661e7b0, checked in by Andrew Beach <ajbeach@…>, 15 months ago |
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After a years (or at least half a year) the CodeLocation optimization is merged in. Added Symbol (using Racket's name for interned strings), and used it for CodeLocation file names. The optimizes for the high number of copies - both instances with the same value and copy operations - and consistently brings down runtime by a few percent.
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File size:
651 bytes
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| 1 | #pragma once
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| 2 |
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| 3 | #include <string>
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| 4 |
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| 5 | // Internal Type:
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| 6 | class SymbolData;
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| 7 |
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| 8 | /// A Symbol is an interned string, where the characters are 'hidden'.
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| 9 | class Symbol final {
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| 10 | SymbolData * data;
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| 11 | public:
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| 12 | /// Create a Symbol for the empty string.
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| 13 | Symbol();
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| 14 |
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| 15 | Symbol(std::string const &);
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| 16 | Symbol(char const *);
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| 17 | Symbol(Symbol const &);
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| 18 | Symbol(Symbol &&);
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| 19 |
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| 20 | ~Symbol();
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| 21 |
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| 22 | Symbol & operator=(std::string const &);
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| 23 | Symbol & operator=(char const *);
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| 24 | Symbol & operator=(Symbol const &);
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| 25 | Symbol & operator=(Symbol &&);
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| 26 |
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| 27 | bool operator==(Symbol const &) const;
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| 28 | bool operator!=(Symbol const &) const;
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| 29 |
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| 30 | std::string const & str() const;
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| 31 | char const * c_str() const;
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| 32 | };
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