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Merge pull request #93699 from dalexeev/gds-fix-false-positive-capture-warnings

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GDScript: Fix false positive `CONFUSABLE_CAPTURE_REASSIGNMENT` warnings
This commit is contained in:
Rémi Verschelde 2024-06-28 15:55:05 +02:00
commit 47776856d6
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GPG Key ID: C3336907360768E1
3 changed files with 45 additions and 43 deletions
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25
modules/gdscript/gdscript_analyzer.cpp
View File

@ -2665,14 +2665,37 @@ void GDScriptAnalyzer::reduce_assignment(GDScriptParser::AssignmentNode *p_assig
#ifdef DEBUG_ENABLED
{
bool is_subscript = false;
GDScriptParser::ExpressionNode *base = p_assignment->assignee;
while (base && base->type == GDScriptParser::Node::SUBSCRIPT) {
is_subscript = true;
base = static_cast<GDScriptParser::SubscriptNode *>(base)->base;
}
if (base && base->type == GDScriptParser::Node::IDENTIFIER) {
GDScriptParser::IdentifierNode *id = static_cast<GDScriptParser::IdentifierNode *>(base);
if (current_lambda && current_lambda->captures_indices.has(id->name)) {
parser->push_warning(p_assignment, GDScriptWarning::CONFUSABLE_CAPTURE_REASSIGNMENT, id->name);
bool need_warn = false;
if (is_subscript) {
const GDScriptParser::DataType &id_type = id->datatype;
if (id_type.is_hard_type()) {
switch (id_type.kind) {
case GDScriptParser::DataType::BUILTIN:
// TODO: Change `Variant::is_type_shared()` to include packed arrays?
need_warn = !Variant::is_type_shared(id_type.builtin_type) && id_type.builtin_type < Variant::PACKED_BYTE_ARRAY;
break;
case GDScriptParser::DataType::ENUM:
need_warn = true;
break;
default:
break;
}
}
} else {
need_warn = true;
}
if (need_warn) {
parser->push_warning(p_assignment, GDScriptWarning::CONFUSABLE_CAPTURE_REASSIGNMENT, id->name);
}
}
}
}

36
modules/gdscript/tests/scripts/analyzer/warnings/confusable_capture_reassignment.gd
View File

@ -5,23 +5,19 @@ func test():
var string := "1"
var vector := Vector2i(1, 0)
var array_assign := [1]
var array_append := [1]
var f := func ():
member = 2
number = 2
string += "2"
vector.x = 2
array_assign = [2]
array_append.append(2)
var g := func ():
member = 3
number = 3
string += "3"
vector.x = 3
array_assign = [3]
array_append.append(3)
prints("g", member, number, string, vector, array_assign, array_append)
g.call()
prints("f", member, number, string, vector, array_assign, array_append)
f.call()
prints("test", member, number, string, vector, array_assign, array_append)
var array_index := [1]
var dictionary := { x = 0 }
var lambda := func ():
member = 2 # Member variable, not captured.
number = 2 # Local variable, captured.
string += "2" # Test compound assignment operator.
vector.x = 2 # Test subscript assignment.
array_assign = [2] # Pass-by-reference type, reassignment.
array_index[0] = 2 # Pass-by-reference type, index access.
dictionary.x = 2 # Pass-by-reference type, attribute access.
prints("lambda", member, number, string, vector, array_assign, array_index, dictionary)
lambda.call()
prints("outer", member, number, string, vector, array_assign, array_index, dictionary)

27
modules/gdscript/tests/scripts/analyzer/warnings/confusable_capture_reassignment.out
View File

@ -1,36 +1,19 @@
GDTEST_OK
>> WARNING
>> Line: 11
>> CONFUSABLE_CAPTURE_REASSIGNMENT
>> Reassigning lambda capture does not modify the outer local variable "number".
>> WARNING
>> Line: 12
>> CONFUSABLE_CAPTURE_REASSIGNMENT
>> Reassigning lambda capture does not modify the outer local variable "string".
>> WARNING
>> Line: 13
>> CONFUSABLE_CAPTURE_REASSIGNMENT
>> Reassigning lambda capture does not modify the outer local variable "vector".
>> Reassigning lambda capture does not modify the outer local variable "number".
>> WARNING
>> Line: 14
>> CONFUSABLE_CAPTURE_REASSIGNMENT
>> Reassigning lambda capture does not modify the outer local variable "array_assign".
>> WARNING
>> Line: 18
>> CONFUSABLE_CAPTURE_REASSIGNMENT
>> Reassigning lambda capture does not modify the outer local variable "number".
>> WARNING
>> Line: 19
>> CONFUSABLE_CAPTURE_REASSIGNMENT
>> Reassigning lambda capture does not modify the outer local variable "string".
>> WARNING
>> Line: 20
>> Line: 15
>> CONFUSABLE_CAPTURE_REASSIGNMENT
>> Reassigning lambda capture does not modify the outer local variable "vector".
>> WARNING
>> Line: 21
>> Line: 16
>> CONFUSABLE_CAPTURE_REASSIGNMENT
>> Reassigning lambda capture does not modify the outer local variable "array_assign".
g 3 3 123 (3, 0) [3] [1, 2, 3]
f 3 2 12 (2, 0) [2] [1, 2, 3]
test 3 1 1 (1, 0) [1] [1, 2, 3]
lambda 2 2 12 (2, 0) [2] [2] { "x": 2 }
outer 2 1 1 (1, 0) [1] [2] { "x": 2 }