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Last change
on this file since 157 was 2, checked in by Rick van der Zwet, 15 years ago |
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Initial import of data of old repository ('data') worth keeping (e.g. tracking
means of URL access statistics)
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File size:
651 bytes
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| 1 | /* C declarations */
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| 2 | /* vi: set et ts=4: */
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| 3 | %{
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| 4 |
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| 5 | #include <stdio.h>
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| 6 | #include "y.tab.h"
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| 7 |
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| 8 | /* extern C declarations */
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| 9 | #if defined(__cplusplus)
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| 10 | extern "C" {
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| 11 | #endif
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| 12 |
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| 13 | /* should be defined in stdio.h */
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| 14 | extern int fileno(FILE *);
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| 15 |
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| 16 | #if defined(__cplusplus)
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| 17 | }
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| 18 | #endif
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| 19 |
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| 20 |
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| 21 | int c;
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| 22 | extern int yylval;
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| 23 |
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| 24 | %}
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| 25 |
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| 26 | %option nounput
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| 27 |
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| 28 |
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| 29 | /* Patterns */
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| 30 | %%
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| 31 |
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| 32 | " " ;
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| 33 | "PI" { return PI; }
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| 34 | "(" { return OPEN_PAREN; }
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| 35 | ")" { return CLOSE_PAREN; }
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| 36 | "**" { return EXPONENT; }
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| 37 | [0-9] {
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| 38 | c = yytext[0];
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| 39 | yylval = c - '0';
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| 40 | return DIGIT;
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| 41 | }
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| 42 |
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| 43 |
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| 44 | [^0-9\b] {
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| 45 | c = yytext[0];
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| 46 | return c;
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| 47 | }
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| 48 |
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| 49 | %%
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| 50 |
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