void walk_ast(ConstructPtr node) {
if (!node) return;
if (dynamic_pointer_cast<MethodStatement>(node)) {
// Don't descend into nested non-closure functions, or functions
// in the psuedo-main.
return;
}
if (auto ce = dynamic_pointer_cast<ClosureExpression>(node)) {
visit_closure(ce);
return;
}
for (int i = 0; i < node->getKidCount(); ++i) {
walk_ast(node->getNthKid(i));
}
}
// Returns: whether or not $this is implicitly used in this part of the AST,
// e.g. via a call using parent::.
bool walk_ast(ConstructPtr node) {
if (!node) return false;
if (dynamic_pointer_cast<MethodStatement>(node)) {
// Don't descend into nested non-closure functions, or functions
// in the pseudo-main.
return false;
}
if (auto ce = dynamic_pointer_cast<ClosureExpression>(node)) {
return visit_closure(ce);
}
auto ret = false;
if (auto fc = dynamic_pointer_cast<FunctionCall>(node)) {
if (fc->isParent()) ret = true;
}
for (int i = 0; i < node->getKidCount(); ++i) {
if (walk_ast(node->getNthKid(i))) ret = true;
}
return ret;
}
