diff options
Diffstat (limited to 'Parser/grammar1.c')
-rw-r--r-- | Parser/grammar1.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Parser/grammar1.c b/Parser/grammar1.c new file mode 100644 index 0000000..0cd66af --- /dev/null +++ b/Parser/grammar1.c @@ -0,0 +1,52 @@ +/* Grammar subroutines needed by parser */ + +#include "PROTO.h" +#define NULL 0 +#include "assert.h" +#include "grammar.h" +#include "token.h" + +/* Return the DFA for the given type */ + +dfa * +finddfa(g, type) + grammar *g; + register int type; +{ + register int i; + register dfa *d; + + for (i = g->g_ndfas, d = g->g_dfa; --i >= 0; d++) { + if (d->d_type == type) + return d; + } + assert(0); + /* NOTREACHED */ +} + +char * +labelrepr(lb) + label *lb; +{ + static char buf[100]; + + if (lb->lb_type == ENDMARKER) + return "EMPTY"; + else if (ISNONTERMINAL(lb->lb_type)) { + if (lb->lb_str == NULL) { + sprintf(buf, "NT%d", lb->lb_type); + return buf; + } + else + return lb->lb_str; + } + else { + if (lb->lb_str == NULL) + return tok_name[lb->lb_type]; + else { + sprintf(buf, "%.32s(%.32s)", + tok_name[lb->lb_type], lb->lb_str); + return buf; + } + } +} |