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-rw-r--r--Parser/grammar1.c52
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;
+ }
+ }
+}