tree.c

使用yacc和lex编写的cmm语言的词法分析和语法分析程序.

#include "tree.h"
#include <stdio.h>
extern void free();
tree make_node (enum tree_code code) {
    tree t = (tree)malloc(sizeof(tree));
    TREE_SET_CODE(t,code);
    return t;
}

/* int main() {
     typedef union  {
            long itype;
            union tree_node * ttype;
            enum tree_code code;
            char * filename;
            int lineno;   
      } YYSTYPE;
      YYSTYPE y;
      y.code = ADDR_EXPR;
      printf("%d\n",sizeof(YYSTYPE));
} */