Commit | Line | Data |
---|---|---|
ac13d9d2 | 1 | %option noyywrap |
e80bea70 | 2 | %option nounput |
ac13d9d2 ML |
3 | %pointer |
4 | ||
5 | EOL \n | |
6 | SPACE [ \t\v\f] | |
7 | WS [ \t\v\n\f] | |
8 | DIGIT [0-9] | |
9 | LETTER [a-zA-Z_] | |
10 | OCTDIGIT [0-7] | |
11 | HEXDIGIT [a-fA-F0-9] | |
12 | EXPONENT [Ee][+-]?{DIGIT}+ | |
13 | FLOQUAL (f|F|l|L) | |
14 | INTQUAL (l|L|ll|LL|lL|Ll|u|U) | |
15 | ||
16 | %{ | |
6f160a6e LC |
17 | #include <config.h> |
18 | ||
ac13d9d2 ML |
19 | #include <stdio.h> |
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
6d4e1f62 NJ |
22 | |
23 | /* Prevent compilation of static input() function in generated scanner | |
24 | code. This function is never actually used, and GCC 4.3 will emit | |
25 | an error for that. */ | |
26 | #define YY_NO_INPUT | |
27 | ||
ac13d9d2 ML |
28 | int filter_snarfage = 0; |
29 | int print = 1; | |
30 | ||
31 | enum t_state { | |
32 | SKIP, | |
33 | MULTILINE, | |
34 | MULTILINE_COOKIE, | |
62024674 | 35 | COOKIE |
ac13d9d2 ML |
36 | }; |
37 | ||
38 | enum t_state state = SKIP; | |
39 | int cookie_was_last = 0; | |
40 | ||
41 | #define OUT_RAW(type,text) if (print) printf ("(%s . \"%s\")\n", #type, text) | |
42 | ||
43 | #define OUT_T(type) OUT_RAW (type, yytext) | |
44 | #define OUT_S if (print) printf ("%s\n", yytext) | |
45 | #define OUT(type) if (print) printf ("%s\n", #type) | |
46 | ||
47 | #define IS_COOKIE cookie_was_last = 1 | |
48 | #define IS_NOT_COOKIE cookie_was_last = 0 | |
49 | ||
50 | %} | |
51 | ||
52 | %% | |
53 | ||
54 | \/\*(\n|[^*]|\*[^/])*\*\/ { OUT_T (comment); } | |
55 | ||
56 | ({SPACE}*(\\\n)*{SPACE}*)+ ; | |
57 | ||
58 | ({SPACE}*\n*{SPACE}*)+ { OUT(eol); } | |
59 | ||
6d7c6cf4 | 60 | #.*\n { OUT(hash); IS_NOT_COOKIE; } |
ac13d9d2 ML |
61 | |
62 | {LETTER}({LETTER}|{DIGIT})* { OUT_T (id); IS_NOT_COOKIE; } | |
63 | ||
64 | 0[xX]{HEXDIGIT}+{INTQUAL}? { OUT_RAW (int_hex, yytext + 2); IS_NOT_COOKIE; } | |
65 | 0{OCTDIGIT}+{INTQUAL}? { OUT_RAW (int_oct, yytext + 1); IS_NOT_COOKIE; } | |
66 | {DIGIT}+{INTQUAL}? { OUT_T (int_dec); IS_NOT_COOKIE; } | |
67 | ||
68 | L?\'(\\.|[^\\\'])+\' { OUT_T (char); IS_NOT_COOKIE; } | |
69 | ||
70 | {DIGIT}+{EXPONENT}{FLOQUAL}? { OUT_T (flo_dec); IS_NOT_COOKIE; } | |
71 | {DIGIT}*"."{DIGIT}+({EXPONENT})?{FLOQUAL}? { OUT_T (flo_dec); IS_NOT_COOKIE; } | |
72 | {DIGIT}+"."{DIGIT}*({EXPONENT})?{FLOQUAL}? { OUT_T (flo_dec); IS_NOT_COOKIE; } | |
73 | ||
74 | L?\"(\\.|[^\\\"])*\" { OUT_S; IS_NOT_COOKIE; } | |
75 | ||
76 | "..." { OUT (ellipsis); IS_NOT_COOKIE; } | |
77 | ||
78 | ">>=" { OUT (shift_right_assign); IS_NOT_COOKIE; } | |
79 | "<<=" { OUT (shift_left_assign); IS_NOT_COOKIE; } | |
80 | "+=" { OUT (add_assign); IS_NOT_COOKIE; } | |
81 | "-=" { OUT (sub_assign); IS_NOT_COOKIE; } | |
82 | "*=" { OUT (mul-assign); IS_NOT_COOKIE; } | |
83 | "/=" { OUT (div_assign); IS_NOT_COOKIE; } | |
84 | "%=" { OUT (mod_assign); IS_NOT_COOKIE; } | |
85 | "&=" { OUT (logand_assign); IS_NOT_COOKIE; } | |
86 | "^=" { OUT (logxor_assign); IS_NOT_COOKIE; } | |
87 | "|=" { OUT (logior_assign); IS_NOT_COOKIE; } | |
88 | ">>" { OUT (right_shift); IS_NOT_COOKIE; } | |
89 | "<<" { OUT (left_shift); IS_NOT_COOKIE; } | |
90 | "++" { OUT (inc); IS_NOT_COOKIE; } | |
91 | "--" { OUT (dec); IS_NOT_COOKIE; } | |
92 | "->" { OUT (ptr); IS_NOT_COOKIE; } | |
93 | "&&" { OUT (and); IS_NOT_COOKIE; } | |
94 | "||" { OUT (or); IS_NOT_COOKIE; } | |
95 | "<=" { OUT (le); IS_NOT_COOKIE; } | |
96 | ">=" { OUT (ge); IS_NOT_COOKIE; } | |
97 | "==" { OUT (eq); IS_NOT_COOKIE; } | |
98 | "!=" { OUT (ne); IS_NOT_COOKIE; } | |
99 | ";" { OUT (semicolon); IS_NOT_COOKIE; } | |
100 | ||
101 | ("{"|"<%") { | |
102 | OUT (brace_open); | |
103 | if (filter_snarfage && cookie_was_last && state == COOKIE) | |
104 | state = MULTILINE; | |
105 | IS_NOT_COOKIE; } | |
106 | ||
107 | ("}"|"%>") { | |
108 | OUT (brace_close); | |
109 | if (filter_snarfage && cookie_was_last && state == MULTILINE_COOKIE) { | |
110 | state = SKIP; | |
111 | print = 0; | |
112 | } | |
113 | IS_NOT_COOKIE; } | |
114 | ||
115 | "," { OUT (comma); IS_NOT_COOKIE; } | |
116 | ":" { OUT (colon); IS_NOT_COOKIE; } | |
117 | "=" { OUT (assign); IS_NOT_COOKIE; } | |
118 | "(" { OUT (paren_open); IS_NOT_COOKIE; } | |
119 | ")" { OUT (paren_close); IS_NOT_COOKIE; } | |
120 | ("["|"<:") { OUT (bracket_open); IS_NOT_COOKIE; } | |
121 | ("]"|":>") { OUT (bracket_close); IS_NOT_COOKIE; } | |
122 | "." { OUT (dot); IS_NOT_COOKIE; } | |
123 | "&" { OUT (amp); IS_NOT_COOKIE; } | |
124 | "!" { OUT (bang); IS_NOT_COOKIE; } | |
125 | "~" { OUT (tilde); IS_NOT_COOKIE; } | |
126 | "-" { OUT (minus); IS_NOT_COOKIE; } | |
127 | "+" { OUT (plus); IS_NOT_COOKIE; } | |
128 | "*" { OUT (star); IS_NOT_COOKIE; } | |
129 | "/" { OUT (slash); IS_NOT_COOKIE; } | |
130 | "%" { OUT (percent); IS_NOT_COOKIE; } | |
131 | "<" { OUT (lt); IS_NOT_COOKIE; } | |
132 | ">" { OUT (gt); IS_NOT_COOKIE; } | |
133 | ||
134 | \^{WS}*\^ { | |
135 | if (filter_snarfage) | |
136 | switch (state) { | |
137 | case SKIP: | |
138 | state = COOKIE; | |
139 | print = 1; | |
140 | OUT (snarf_cookie); | |
141 | break; | |
142 | case MULTILINE: | |
143 | case MULTILINE_COOKIE: | |
144 | state = MULTILINE_COOKIE; | |
145 | OUT (snarf_cookie); | |
146 | break; | |
147 | case COOKIE: | |
148 | state = SKIP; | |
149 | OUT (snarf_cookie); | |
150 | print = 0; | |
151 | break; | |
152 | default: | |
153 | /* whoops */ | |
154 | abort (); | |
155 | break; | |
156 | } | |
157 | else | |
158 | OUT (snarf_cookie); | |
159 | ||
160 | IS_COOKIE; } | |
161 | ||
162 | "^" { OUT (caret); IS_NOT_COOKIE; } | |
163 | "|" { OUT (pipe); IS_NOT_COOKIE; } | |
164 | "?" { OUT (question); IS_NOT_COOKIE; } | |
165 | ||
166 | . { fprintf (stderr, "*%s", yytext); fflush (stderr); IS_NOT_COOKIE; } | |
167 | ||
168 | %% | |
169 | ||
170 | int | |
171 | main (int argc, char *argv[]) | |
172 | { | |
173 | if (argc > 1 && !strcmp (argv[1], "--filter-snarfage")) { | |
174 | filter_snarfage = 1; | |
175 | print = 0; | |
176 | } | |
177 | ||
178 | yylex (); | |
179 | ||
180 | return EXIT_SUCCESS; | |
181 | } | |
182 | ||
183 | /* | |
184 | Local Variables: | |
185 | c-file-style: "gnu" | |
186 | End: | |
187 | */ |