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|
%top {
#include "grammar.h"
}
%option noyywrap
%option nounput
%option noinput
%option yylineno
%option stack
%option noyy_top_state
%x cond
%x cond_binval
%x cond_hexval
%x action
%x raw_line
%%
\/\/[^\n]+ { }
"if" { yy_push_state(cond); return IF; }
<cond>[ ]+ { }
<cond>"(" { return EXPR_START; }
<cond>[A-Za-z_][A-Za-z0-9_]* { yylvalp->string = strdup(yytext); return NAME; }
<cond>"==" { return EQUAL; }
<cond>"'" { yy_push_state(cond_binval); }
<cond_binval>[01][01]* { yylvalp->string = strdup(yytext); return BINVAL; }
<cond_binval>"'" { yy_pop_state(); }
<cond>"0x" { yy_push_state(cond_hexval); }
<cond_hexval>[0-9a-f][0-9a-f]* { yylvalp->string = strdup(yytext); yy_pop_state(); return HEXVAL; }
<cond>")" { return EXPR_END; }
<cond>"&&" { return AND; }
<cond>"&" { return AND_LOG; }
<cond>";" { yy_pop_state(); return THEN; }
[ \t\n] { }
"see " { yy_push_state(raw_line); return SEE; }
"unpredictable" { return UNPREDICTABLE; }
"call" { yy_push_state(raw_line); return CALL; }
"check" { yy_push_state(raw_line); return CHK_CALL; }
<raw_line>[^\n]+ { yylvalp->cstring = yytext; return RAW_LINE; }
<raw_line>"\n" { yy_pop_state(); }
. {
char *msg;
int ret;
ret = asprintf(&msg, "Unhandled token in d2c rules block: '%s'", yytext);
if (ret == -1)
YY_FATAL_ERROR("Unhandled token in undisclosed d2c rules block");
else
{
YY_FATAL_ERROR(msg);
free(msg);
}
}
%%
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