3 void yyerror (char const *);
15 } st; /* subtree type */
18 struct tree* c; /* condition */
19 struct tree* i; /* if */
20 struct tree* e; /* else */
31 } cond; /* binary operator */
66 struct tree* input_tree;
69 #define CC(a,b) ((a<<8)|b)
70 void* xmalloc(size_t size);
71 char* xstrdup(char* s);
72 void __attribute__ ((noreturn)) die(char* msg, ...);
79 struct variable* next;
82 struct variable** var_hash;
84 void print_tree(struct tree* t, int ind);
85 void interp(struct tree* t, struct variable** hash);
86 struct variable** new_var_hash(void);
87 void print_vars(struct variable** hash);