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Last change
on this file was
661e7b0,
checked in by Andrew Beach <ajbeach@…>, 3 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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Property mode set to
100644
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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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