77 lines
982 B
Plaintext
77 lines
982 B
Plaintext
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%{
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#include <stdio.h>
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#include <iostream>
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using namespace std;
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extern "C" {
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int yylex(void);
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}
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extern FILE * yyin;
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void yyerror(const char * str)
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{
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fprintf(stderr, "error: %s\n", str);
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}
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int yywrap()
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{
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return 1;
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}
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%}
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%token PLUS;
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%token MINUS;
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%token STAR;
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%token DIVIDE;
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%token MOD;
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%token SEMICOLON;
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%token COLON;
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%token QUESTION;
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%token DOLLAR;
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%token DOT;
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%token DQUOTE;
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%token SQUOTE;
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%token COMMA;
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%token LCURLY;
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%token RCURLY;
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%token LBRACKET;
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%token RBRACKET;
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%token LPAREN;
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%token RPAREN;
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%token BIN_NUMBER;
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%token HEX_NUMBER;
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%token OCT_NUMBER;
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%token DEC_NUMBER;
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%%
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program: /* empty */
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| number program { printf("Saw a number\n"); }
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;
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number: BIN_NUMBER
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| OCT_NUMBER
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| DEC_NUMBER
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| HEX_NUMBER
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;
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%%
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int parse(const char * fileName)
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{
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yyin = fopen(fileName, "r");
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if (yyin == NULL)
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{
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cerr << "Failed to open file '" << fileName << "'" << endl;
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return -1;
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}
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yyparse();
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}
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