llvm-6502/utils/Burg/symtab.c

char rcsid_symtab[] = "$Id$";

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

static List symtab;

Symbol
newSymbol(name) char *name;
{
  Symbol s;

  s = (Symbol) zalloc(sizeof(struct symbol));
  assert(s);
  s->name = name;
  return s;
}

Symbol
enter(name, new) char *name; int *new;
{
  List l;
  Symbol s;

  *new = 0;
  for (l = symtab; l; l = l->next) {
    s = (Symbol) l->x;
    if (!strcmp(name, s->name)) {
      return s;
    }
  }
  *new = 1;
  s = newSymbol(name);
  symtab = newList(s, symtab);
  return s;
}