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GDScript: Adjust STATIC_CALLED_ON_INSTANCE warning to not default to the native type, and to not trigger on self-calls

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Not defaulting to the native type rationale:

Defaulting to the native type is less than useful, as:

* There are very few native types that are extensible and have static methods.
* Defaulting to the native type does not account for a method being script-defined.

While the "real fix" would be to carefully track the source of the method, the get_function_signature method is already complicated enough.

This will at least ensure the resulting code should always be valid.

Not triggering on self-calls rationale:

Found in PR comment https://github.com/godotengine/godot/pull/85918#issuecomment-1935864459

```
static func example():
	pass

func example2():
	example() # self-call on static function
```

Disabling this warning on self-calls is:

* Consistent with other languages
* Important for anonymous classes (where the output code is unusable)
This commit is contained in:
20kdc 2023-12-08 12:26:44 +00:00 committed by Danil Alexeev
parent 8e951fd0a9
commit 24181d1055
No known key found for this signature in database
GPG key ID: 124453E157DA8DC7
3 changed files with 31 additions and 15 deletions
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8
modules/gdscript/gdscript_analyzer.cpp
View file

@ -3360,12 +3360,8 @@ void GDScriptAnalyzer::reduce_call(GDScriptParser::CallNode *p_call, bool p_is_a
parser->push_warning(p_call, GDScriptWarning::RETURN_VALUE_DISCARDED, p_call->function_name);
}
if (method_flags.has_flag(METHOD_FLAG_STATIC) && !is_constructor && !base_type.is_meta_type && !(is_self && static_context)) {
String caller_type = String(base_type.native_type);
if (caller_type.is_empty()) {
caller_type = base_type.to_string();
}
if (method_flags.has_flag(METHOD_FLAG_STATIC) && !is_constructor && !base_type.is_meta_type && !is_self) {
String caller_type = base_type.to_string();
parser->push_warning(p_call, GDScriptWarning::STATIC_CALLED_ON_INSTANCE, p_call->function_name, caller_type);
}

28
modules/gdscript/tests/scripts/parser/warnings/static_called_on_instance.gd
View file

@ -1,11 +1,23 @@
class Player:
var x = 3
class_name TestStaticCalledOnInstance
class Inner:
static func static_func():
pass
static func static_func():
pass
func test():
# These should not emit a warning.
var _player = Player.new()
print(String.num_uint64(8589934592)) # 2 ^ 33
print(String.num_uint64(8589934592))
var some_string := String()
print(some_string.num_uint64(8589934592)) # Warning.
# This should emit a warning.
var some_string = String()
print(some_string.num_uint64(8589934592)) # 2 ^ 33
TestStaticCalledOnInstance.static_func()
static_func()
self.static_func()
var other := TestStaticCalledOnInstance.new()
other.static_func() # Warning.
Inner.static_func()
var inner := Inner.new()
inner.static_func() # Warning.

10
modules/gdscript/tests/scripts/parser/warnings/static_called_on_instance.out
View file

@ -1,7 +1,15 @@
GDTEST_OK
>> WARNING
>> Line: 11
>> Line: 13
>> STATIC_CALLED_ON_INSTANCE
>> The function "num_uint64()" is a static function but was called from an instance. Instead, it should be directly called from the type: "String.num_uint64()".
>> WARNING
>> Line: 19
>> STATIC_CALLED_ON_INSTANCE
>> The function "static_func()" is a static function but was called from an instance. Instead, it should be directly called from the type: "TestStaticCalledOnInstance.static_func()".
>> WARNING
>> Line: 23
>> STATIC_CALLED_ON_INSTANCE
>> The function "static_func()" is a static function but was called from an instance. Instead, it should be directly called from the type: "Inner.static_func()".
8589934592
8589934592