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comparison src/sdl/expr.l @ 28:2efb971df515

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bringing in SDL package
author Robert McIntyre <rlm@mit.edu>
date Sun, 04 Mar 2012 21:06:50 -0600
parents f9f4f1b99eed
children
comparison
equal deleted inserted replaced
27:b970226568d2 28:2efb971df515
1 %{
2 #include "expr.cpp.h"
3
4 #ifndef __GNUC__
5 #include <io.h>
6 #define isatty _isatty
7 #endif
8
9 char *exprString;
10 int exprCol;
11
12 #define YY_INPUT(buf,result,max_size) \
13 { \
14 int c = *exprString++; \
15 exprCol++;\
16 result = (c == 0) ? YY_NULL : (buf[0] = c, 1); \
17 }
18 %}
19
20 %option nomain
21 %option noyywrap
22
23 SIZEOF "sizeof"
24 ID [a-zA-Z_][a-zA-Z0-9_]*
25 NUM [0-9]+
26 DOT "."
27 ARROW "->"
28 STAR "*"
29 ADDR "&"
30
31 %%
32
33 {SIZEOF} {
34 return TOKEN_SIZEOF;
35 }
36
37 {ID} {
38 return TOKEN_IDENTIFIER;
39 }
40
41 {NUM} {
42 return TOKEN_NUMBER;
43 }
44
45 {DOT} {
46 return TOKEN_DOT;
47 }
48
49 {ARROW} {
50 return TOKEN_ARROW;
51 }
52
53 {ADDR} {
54 return TOKEN_ADDR;
55 }
56
57 {STAR} {
58 return TOKEN_STAR;
59 }
60
61 [ \t\n]+
62
63 . return *yytext;
64
65 %%
66
67 void exprCleanBuffer()
68 {
69 yy_delete_buffer(yy_current_buffer);
70 yy_init = 1;
71 }