]>
Commit | Line | Data |
---|---|---|
1 | %{ | |
2 | #include <string.h> | |
3 | #include "wx/expr.h" | |
4 | ||
5 | #ifndef __EXTERN_C__ | |
6 | #define __EXTERN_C__ 1 | |
7 | #endif | |
8 | ||
9 | #if defined(__cplusplus) || defined(__STDC__) | |
10 | #if defined(__cplusplus) && defined(__EXTERN_C__) | |
11 | extern "C" { | |
12 | #endif | |
13 | #endif | |
14 | int yylex(void); | |
15 | int yylook(void); | |
16 | int yywrap(void); | |
17 | int yyback(int *, int); | |
18 | void yyerror(char *); | |
19 | ||
20 | /* You may need to put /DLEX_SCANNER in your makefile | |
21 | * if you're using LEX! | |
22 | */ | |
23 | #ifdef LEX_SCANNER | |
24 | /* int yyoutput(int); */ | |
25 | void yyoutput(int); | |
26 | #else | |
27 | void yyoutput(int); | |
28 | #endif | |
29 | ||
30 | #if defined(__cplusplus) || defined(__STDC__) | |
31 | #if defined(__cplusplus) && defined(__EXTERN_C__) | |
32 | } | |
33 | #endif | |
34 | #endif | |
35 | %} | |
36 | ||
37 | %union { | |
38 | char *s; | |
39 | /* struct pexpr *expr; */ | |
40 | } | |
41 | ||
42 | ||
43 | %start commands | |
44 | ||
45 | %token <s> INTEGER 1 | |
46 | %token <s> WORD 2 | |
47 | %token <s> STRING 3 | |
48 | %token <s> PERIOD 13 | |
49 | %token OPEN 4 | |
50 | %token CLOSE 5 | |
51 | %token COMMA 6 | |
52 | %token NEWLINE 7 | |
53 | %token ERROR 8 | |
54 | %token OPEN_SQUARE 9 | |
55 | %token CLOSE_SQUARE 10 | |
56 | %token EQUALS 11 | |
57 | %token EXP 14 | |
58 | ||
59 | /* %type <expr> command expr arglist arg arg1 */ | |
60 | %type <s> command expr arglist arg arg1 | |
61 | ||
62 | %% | |
63 | ||
64 | commands : /* empty */ | |
65 | | commands command | |
66 | ; | |
67 | ||
68 | command : WORD PERIOD | |
69 | {process_command(proio_cons(make_word($1), NULL)); free($1);} | |
70 | | expr PERIOD | |
71 | {process_command($1);} | |
72 | | error PERIOD | |
73 | {syntax_error("Unrecognized command.");} | |
74 | ; | |
75 | ||
76 | expr : WORD OPEN arglist CLOSE | |
77 | {$$ = proio_cons(make_word($1), $3); free($1);} | |
78 | | OPEN_SQUARE CLOSE_SQUARE | |
79 | {$$ = proio_cons(NULL, NULL);} | |
80 | | OPEN_SQUARE arglist CLOSE_SQUARE | |
81 | {$$ = $2; } | |
82 | ; | |
83 | ||
84 | arglist : | |
85 | {$$ = NULL;} | |
86 | | arg | |
87 | {$$ = proio_cons($1, NULL);} | |
88 | | | |
89 | arg COMMA arglist | |
90 | {$$ = proio_cons($1, $3);} | |
91 | ; | |
92 | ||
93 | arg : WORD EQUALS arg1 | |
94 | {$$ = proio_cons(make_word("="), proio_cons(make_word($1), proio_cons($3, NULL))); | |
95 | free($1); } | |
96 | | arg1 | |
97 | {$$ = $1; } | |
98 | ||
99 | arg1 : WORD | |
100 | {$$ = make_word($1); free($1);} | |
101 | | STRING | |
102 | {$$ = make_string($1); free($1);} | |
103 | | INTEGER | |
104 | {$$ = make_integer($1); free($1);} | |
105 | | INTEGER PERIOD INTEGER | |
106 | {$$ = make_real($1, $3); free($1); free($3); } | |
107 | | INTEGER EXP INTEGER | |
108 | {$$ = make_exp($1, $3); free($1); free($3); } | |
109 | | | |
110 | INTEGER PERIOD INTEGER EXP INTEGER | |
111 | {$$ = make_exp2($1, $3, $5); free($1); free($3); | |
112 | free($5); } | |
113 | ||
114 | | expr | |
115 | {$$ = $1;} | |
116 | ; | |
117 | ||
118 | %% | |
119 | ||
120 | #include "../common/lex_yy.c" | |
121 | ||
122 | /* | |
123 | void yyerror(s) | |
124 | char *s; | |
125 | { | |
126 | syntax_error(s); | |
127 | } | |
128 | */ | |
129 | ||
130 | /* Ansi prototype. If this doesn't work for you... uncomment | |
131 | the above instead. | |
132 | */ | |
133 | ||
134 | void yyerror(char *s) | |
135 | { | |
136 | syntax_error(s); | |
137 | } | |
138 | ||
139 | /* | |
140 | * Unfortunately, my DOS version of FLEX | |
141 | * requires yywrap to be #def'ed, whereas | |
142 | * the UNIX flex expects a proper function. | |
143 | */ | |
144 | ||
145 | /* Not sure if __SC__ is the appropriate thing | |
146 | * to test | |
147 | */ | |
148 | ||
149 | #ifndef __SC__ | |
150 | #ifdef USE_DEFINE | |
151 | #ifndef yywrap | |
152 | #define yywrap() 1 | |
153 | #endif | |
154 | #else if !defined(__alpha) && !defined(__ultrix) | |
155 | int yywrap() { return 1; } | |
156 | #endif | |
157 | #endif |