40 	struct expression *ex, *at;  in alloc_and_hook_expr()  local
42 	ex = malloc(sizeof(struct expression));  in alloc_and_hook_expr()
43 	if (ex == NULL) {  in alloc_and_hook_expr()
47 	memset(ex, 0, sizeof(struct expression));  in alloc_and_hook_expr()
49 		*exp_p = ex;  in alloc_and_hook_expr()
54 		*last_p = ex;  in alloc_and_hook_expr()
57 		at->next = ex;  in alloc_and_hook_expr()
58 		ex->prev = at;  in alloc_and_hook_expr()
59 		*last_p = ex;  in alloc_and_hook_expr()
61 	return (ex);  in alloc_and_hook_expr()
212 	struct expression *at, *ex;  in walk_back_and_insert_paren()  local
215 	ex = malloc(sizeof(struct expression));  in walk_back_and_insert_paren()
216 	if (ex == NULL) {  in walk_back_and_insert_paren()
220 	memset(ex, 0, sizeof(struct expression));  in walk_back_and_insert_paren()
221 	ex->type = TYPE_PARN_OPEN;  in walk_back_and_insert_paren()
227 		ex->next = at;  in walk_back_and_insert_paren()
228 		at->prev = ex;  in walk_back_and_insert_paren()
229 		*beg = ex;  in walk_back_and_insert_paren()
235 		ex->prev = at->prev;  in walk_back_and_insert_paren()
236 		ex->prev->next = ex;  in walk_back_and_insert_paren()
237 		ex->next = at;  in walk_back_and_insert_paren()
238 		at->prev = ex;  in walk_back_and_insert_paren()
272 	struct expression *at, *ex;  in walk_fwd_and_insert_paren()  local
274 	ex = malloc(sizeof(struct expression));  in walk_fwd_and_insert_paren()
275 	if (ex == NULL) {  in walk_fwd_and_insert_paren()
279 	memset(ex, 0, sizeof(struct expression));  in walk_fwd_and_insert_paren()
280 	ex->type = TYPE_PARN_CLOSE;  in walk_fwd_and_insert_paren()
281 	*added = ex;  in walk_fwd_and_insert_paren()
288 		ex->next = at->next;  in walk_fwd_and_insert_paren()
289 		ex->prev = at;  in walk_fwd_and_insert_paren()
290 		at->next = ex;  in walk_fwd_and_insert_paren()