llvm-mirror/utils/Burg/nonterminal.c

char rcsid_nonterminal[] = "$Id$";

#include "b.h"
#include <stdio.h>
#include <string.h>

NonTerminal start;
NonTerminalNum  max_nonterminal = 1;
NonTerminalNum  last_user_nonterminal;
List    nonterminals;

NonTerminal
newNonTerminal(name) char *name;
{
  NonTerminal nt;

  nt = (NonTerminal) zalloc(sizeof(struct nonterminal));
  assert(nt);
  if (max_nonterminal == 1) {
    start = nt;
  }
  nt->name = name;
  nt->num = max_nonterminal++;
  nonterminals = newList(nt, nonterminals);

  return nt;
}

int
nonTerminalName(buf, i) char *buf; int i;
{
  List l;

  for (l = nonterminals; l; l = l->next) {
    NonTerminal nt = (NonTerminal) l->x;
    if (nt->num == i) {
      strcpy(buf, nt->name);
      return 1;
    }
  }
  strcpy(buf, "(Unknown NonTerminal)");
  return 0;
}

void
dumpNonTerminal(n) NonTerminal n;
{
  printf("%s(%d)", n->name, n->num);
}