blob: 4faef5da026d22e2a0385f76d02d730895dd3eb8 (
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
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
%{
/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "expr.h"
#include "parser.h"
int gLine = 1;
int gColumn = 1;
// TODO: enforce MAX_STRING_LEN during lexing
char string_buffer[MAX_STRING_LEN];
char* string_pos;
%}
%x STR
%option noyywrap
%%
\" {
++gColumn;
BEGIN(STR);
string_pos = string_buffer;
}
<STR>{
\" {
++gColumn;
BEGIN(INITIAL);
*string_pos = '\0';
yylval.str = strdup(string_buffer);
return STRING;
}
\\n { gColumn += yyleng; *string_pos++ = '\n'; }
\\t { gColumn += yyleng; *string_pos++ = '\t'; }
\\\" { gColumn += yyleng; *string_pos++ = '\"'; }
\\\\ { gColumn += yyleng; *string_pos++ = '\\'; }
\\x[0-9a-fA-F]{2} {
gColumn += yyleng;
int val;
sscanf(yytext+2, "%x", &val);
*string_pos++ = val;
}
\n {
++gLine;
gColumn = 1;
*string_pos++ = yytext[0];
}
. {
++gColumn;
*string_pos++ = yytext[0];
}
}
if { gColumn += yyleng; return IF; }
then { gColumn += yyleng; return THEN; }
else { gColumn += yyleng; return ELSE; }
endif { gColumn += yyleng; return ENDIF; }
[a-zA-Z0-9_:/]+ {
gColumn += yyleng;
yylval.str = strdup(yytext);
return STRING;
}
\&\& { gColumn += yyleng; return AND; }
\|\| { gColumn += yyleng; return OR; }
== { gColumn += yyleng; return EQ; }
!= { gColumn += yyleng; return NE; }
[+(),!;] { gColumn += yyleng; return yytext[0]; }
[ \t]+ gColumn += yyleng;
(#.*)?\n { ++gLine; gColumn = 1; }
. return BAD;
|
