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Merge pull request #69620 from vonagam/fix-param-shadow

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Fix incomplete shadowing of member properties by parameters
This commit is contained in:
Rémi Verschelde 2022-12-06 10:58:08 +01:00
commit 95350d57e1
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GPG Key ID: C3336907360768E1
4 changed files with 50 additions and 3 deletions
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10
modules/gdscript/gdscript_compiler.cpp
View File

@ -43,7 +43,7 @@ bool GDScriptCompiler::_is_class_member_property(CodeGen &codegen, const StringN
return false;
}
if (codegen.parameters.has(p_name) || codegen.locals.has(p_name)) {
if (_is_local_or_parameter(codegen, p_name)) {
return false; //shadowed
}
@ -65,6 +65,10 @@ bool GDScriptCompiler::_is_class_member_property(GDScript *owner, const StringNa
return ClassDB::has_property(nc->get_name(), p_name);
}
bool GDScriptCompiler::_is_local_or_parameter(CodeGen &codegen, const StringName &p_name) {
return codegen.parameters.has(p_name) || codegen.locals.has(p_name);
}
void GDScriptCompiler::_set_error(const String &p_error, const GDScriptParser::Node *p_node) {
if (!error.is_empty()) {
return;
@ -920,7 +924,7 @@ GDScriptCodeGenerator::Address GDScriptCompiler::_parse_expression(CodeGen &code
StringName var_name = identifier->name;
if (_is_class_member_property(codegen, var_name)) {
assign_class_member_property = var_name;
} else if (!codegen.locals.has(var_name) && codegen.script->member_indices.has(var_name)) {
} else if (!_is_local_or_parameter(codegen, var_name) && codegen.script->member_indices.has(var_name)) {
is_member_property = true;
member_property_setter_function = codegen.script->member_indices[var_name].setter;
member_property_has_setter = member_property_setter_function != StringName();
@ -1131,7 +1135,7 @@ GDScriptCodeGenerator::Address GDScriptCompiler::_parse_expression(CodeGen &code
bool is_in_setter = false;
StringName setter_function;
StringName var_name = static_cast<const GDScriptParser::IdentifierNode *>(assignment->assignee)->name;
if (!codegen.locals.has(var_name) && codegen.script->member_indices.has(var_name)) {
if (!_is_local_or_parameter(codegen, var_name) && codegen.script->member_indices.has(var_name)) {
is_member = true;
setter_function = codegen.script->member_indices[var_name].setter;
has_setter = setter_function != StringName();

1
modules/gdscript/gdscript_compiler.h
View File

@ -115,6 +115,7 @@ class GDScriptCompiler {
bool _is_class_member_property(CodeGen &codegen, const StringName &p_name);
bool _is_class_member_property(GDScript *owner, const StringName &p_name);
bool _is_local_or_parameter(CodeGen &codegen, const StringName &p_name);
void _set_error(const String &p_error, const GDScriptParser::Node *p_node);

25
modules/gdscript/tests/scripts/runtime/features/parameter_shadowing.gd Normal file
View File

@ -0,0 +1,25 @@
# https://github.com/godotengine/godot/pull/69620
var a: int = 1
func shadow_regular_assignment(a: Variant, b: Variant) -> void:
print(a)
print(self.a)
a = b
print(a)
print(self.a)
var v := Vector2(0.0, 0.0)
func shadow_subscript_assignment(v: Vector2, x: float) -> void:
print(v)
print(self.v)
v.x += x
print(v)
print(self.v)
func test():
shadow_regular_assignment('a', 'b')
shadow_subscript_assignment(Vector2(1.0, 1.0), 5.0)

17
modules/gdscript/tests/scripts/runtime/features/parameter_shadowing.out Normal file
View File

@ -0,0 +1,17 @@
GDTEST_OK
>> WARNING
>> Line: 5
>> SHADOWED_VARIABLE
>> The local function parameter "a" is shadowing an already-declared variable at line 3.
>> WARNING
>> Line: 15
>> SHADOWED_VARIABLE
>> The local function parameter "v" is shadowing an already-declared variable at line 13.
a
1
b
1
(1, 1)
(0, 0)
(6, 1)
(0, 0)