blob: e321ba338a4197840d77f8d778302ded8aef3930 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
#ifndef LEXER_HPP
#define LEXER_HPP
#include <iostream>
#include "token.hpp"
namespace SpasmImpl
{
// ! Namespace for all classes and functions dealing with assembler
namespace ASM
{
//! Namespace for all lexical analisys classes
namespace Lexer
{
/*!
** Class for lexers for the assembler-like language for spasm
*/
class Lexer
{
public:
Lexer(std::istream&, size_t = 4096);
~Lexer();
bool tokenize(TokenStream&);
//! fills the buffer called when the lexer needs more data
void read(size_t = 1);
void buffer_init();
private:
Lexer(const Lexer&);
Lexer& operator=(const Lexer&);
void buffer_grow(size_t);
//! input stream for the lexer
std::istream* file;
//! buffer for the lexer
char* buffer;
//! size of the buffer
size_t buffer_size;
//! cursor for re2c generated lexer
char* cursor;
//! limit for re2c generated lexer
char* limit;
//! marker for re2c generated lexer
char* marker;
//! pointer to the start of the just recognized token
char* token_start;
//! saves the state of the lexer
unsigned int state;
//! number of current line
size_t lineno;
};
} // namespace Lexer
} // namespace ASM
} // namespace SpasmImpl
#endif
|
