42 lines
496 B
Plaintext
42 lines
496 B
Plaintext
|
%{
|
||
|
|
|
||
|
|
#ifdef YYBISON
|
||
|
|
#define YYSTYPE int
|
||
|
|
#define YYLEX_PARAM &yylval
|
||
|
|
#define YYLEX_DECL() yylex(YYSTYPE *yylval)
|
||
|
|
#define YYERROR_DECL() yyerror(const char *s)
|
||
|
|
int YYLEX_DECL();
|
||
|
|
static void YYERROR_DECL();
|
||
|
|
#endif
|
||
|
|
|
||
|
|
%}
|
||
|
|
|
||
|
|
%%
|
||
|
|
S: error
|
||
|
|
%%
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
#ifdef YYBYACC
|
||
|
|
extern int YYLEX_DECL();
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int
|
||
|
|
main(void)
|
||
|
|
{
|
||
|
|
printf("yyparse() = %d\n", yyparse());
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
yylex(YYSTYPE *value)
|
||
|
|
{
|
||
|
|
return value ? 0 : -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
yyerror(const char* s)
|
||
|
|
{
|
||
|
|
printf("%s\n", s);
|
||
|
|
}
|