*/
static int node_check(struct node *node, int (*check)(void *closure, const char *name), void *closure)
{
- int rc;
-
- switch (node->type) {
- case Text:
- rc = check(closure, node->text);
- break;
- case And:
- rc = node_check(node->children[0], check, closure);
- if (rc)
- rc = node_check(node->children[1], check, closure);
- break;
- case Or:
- rc = node_check(node->children[0], check, closure);
- if (!rc)
- rc = node_check(node->children[1], check, closure);
- break;
- case Not:
- rc = !node_check(node->children[0], check, closure);
- break;
+ for(;;) {
+ switch (node->type) {
+ case Text:
+ return check(closure, node->text);
+ case And:
+ if (!node_check(node->children[0], check, closure))
+ return 0;
+ break;
+ case Or:
+ if (node_check(node->children[0], check, closure))
+ return 1;
+ break;
+ case Not:
+ return !node_check(node->children[0], check, closure);
+ }
+ node = node->children[1];
}
- return rc;
}
/*********************************************************************