Add Callable.is_valid() analogous to FuncRef.is_valid() from 3.x

3 files changed, 6 insertions, 0 deletions

diff --git a/core/variant/callable.cpp b/core/variant/callable.cpp
index 34b3e3ea35..ca6f3d615e 100644
--- a/core/variant/callable.cpp
+++ b/core/variant/callable.cpp
@@ -89,6 +89,10 @@ Callable Callable::unbind(int p_argcount) const {
 	return Callable(memnew(CallableCustomUnbind(*this, p_argcount)));
 }
 
+bool Callable::is_valid() const {
+	return get_object() && (is_custom() || get_object()->has_method(get_method()));
+}
+
 Object *Callable::get_object() const {
 	if (is_null()) {
 		return nullptr;
diff --git a/core/variant/callable.h b/core/variant/callable.h
index 20d0804292..52094af3aa 100644
--- a/core/variant/callable.h
+++ b/core/variant/callable.h
@@ -81,6 +81,7 @@ public:
 	_FORCE_INLINE_ bool is_standard() const {
 		return method != StringName();
 	}
+	bool is_valid() const;
 
 	Callable bind(const Variant **p_arguments, int p_argcount) const;
 	Callable unbind(int p_argcount) const;
diff --git a/core/variant/variant_call.cpp b/core/variant/variant_call.cpp
index 95c4e7121b..733361fe58 100644
--- a/core/variant/variant_call.cpp
+++ b/core/variant/variant_call.cpp
@@ -1630,6 +1630,7 @@ static void _register_variant_builtin_methods() {
 	bind_method(Callable, is_null, sarray(), varray());
 	bind_method(Callable, is_custom, sarray(), varray());
 	bind_method(Callable, is_standard, sarray(), varray());
+	bind_method(Callable, is_valid, sarray(), varray());
 	bind_method(Callable, get_object, sarray(), varray());
 	bind_method(Callable, get_object_id, sarray(), varray());
 	bind_method(Callable, get_method, sarray(), varray());