Merge pull request #77324 from anvilfolk/oh-no-its-virtual

GDScript: add errors when calling unimplemented virtual functions

modules/gdscript/tests/scripts/analyzer/errors/virtual_method_not_implemented.gd

@@ -0,0 +1,2 @@
+func test():
+	_get_property_list()

modules/gdscript/tests/scripts/analyzer/errors/virtual_method_not_implemented.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Cannot call virtual function "_get_property_list()" because it hasn't been defined.

modules/gdscript/tests/scripts/analyzer/errors/virtual_super_not_implemented.gd

@@ -0,0 +1,5 @@
+func _init():
+	super()
+
+func test():
+	pass

modules/gdscript/tests/scripts/analyzer/errors/virtual_super_not_implemented.out

@@ -0,0 +1,2 @@
+GDTEST_ANALYZER_ERROR
+Cannot call the parent class' virtual function "_init()" because it hasn't been defined.

modules/gdscript/tests/scripts/analyzer/features/virtual_method_implemented.gd

@@ -0,0 +1,11 @@
+class TestOne:
+	func _get_property_list():
+		return {}
+
+class TestTwo extends TestOne:
+	func _init():
+		var _x = _get_property_list()
+
+func test():
+	var x = TestTwo.new()
+	var _x = x._get_property_list()

modules/gdscript/tests/scripts/analyzer/features/virtual_method_implemented.out

@@ -0,0 +1 @@
+GDTEST_OK