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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | mjames | 1 | |
| 2 | %{ |
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| 3 | #include <stdio.h> |
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| 4 | %} |
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| 5 | |||
| 6 | // Symbols. |
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| 7 | %union |
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| 8 | { |
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| 9 | char *sval; |
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| 10 | }; |
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| 11 | %token <sval> IDENTIFIER |
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| 12 | %token PROCEDURE |
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| 13 | %token BLOCK |
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| 14 | %token ENDBLOCK |
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| 15 | |||
| 16 | %start Procedure |
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| 17 | %% |
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| 18 | |||
| 19 | Procedure: |
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| 20 | PROCEDURE IDENTIFIER BLOCK { printf("Procedure : %s\n", $2); } |
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| 21 | Parts |
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| 22 | ENDBLOCK |
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| 23 | ; |
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| 24 | |||
| 25 | Parts: |
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| 26 | /* empty */ |
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| 27 | | Parts Part |
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| 28 | ; |
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| 29 | |||
| 30 | Part: |
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| 31 | IDENTIFIER BLOCK { printf("\tPart : %s\n", $1); } |
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| 32 | Keywords |
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| 33 | ENDBLOCK |
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| 34 | ; |
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| 35 | |||
| 36 | Keywords: |
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| 37 | /* empty */ |
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| 38 | | Keywords Keyword |
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| 39 | ; |
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| 40 | |||
| 41 | Keyword: |
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| 42 | IDENTIFIER { printf("\t\tKeyword : %s\n", $1); } |
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| 43 | ; |
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| 44 | %% |
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| 45 | |||
| 46 | int yyerror(char *s) { |
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| 47 | printf("yyerror : %s\n",s); |
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| 48 | } |
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| 49 | |||
| 50 | int main(void) { |
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| 51 | yyparse(); |
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| 52 | } |
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| 53 |