source: src/Common/Symbol.hpp@ 35cc6d4

Last change on this file since 35cc6d4 was 661e7b0, checked in by Andrew Beach <ajbeach@…>, 13 months ago

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.

  • Property mode set to 100644
File size: 651 bytes
Line 
1#pragma once
2
3#include <string>
4
5// Internal Type:
6class SymbolData;
7
8/// A Symbol is an interned string, where the characters are 'hidden'.
9class Symbol final {
10 SymbolData * data;
11public:
12 /// Create a Symbol for the empty string.
13 Symbol();
14
15 Symbol(std::string const &);
16 Symbol(char const *);
17 Symbol(Symbol const &);
18 Symbol(Symbol &&);
19
20 ~Symbol();
21
22 Symbol & operator=(std::string const &);
23 Symbol & operator=(char const *);
24 Symbol & operator=(Symbol const &);
25 Symbol & operator=(Symbol &&);
26
27 bool operator==(Symbol const &) const;
28 bool operator!=(Symbol const &) const;
29
30 std::string const & str() const;
31 char const * c_str() const;
32};
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