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Fixed nullable null coalescing short circuiting

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This commit is contained in:
Brian Fiete 2022-08-03 07:54:35 -07:00
parent 0bedd77f0a
commit e6352571c1
3 changed files with 34 additions and 30 deletions
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22
IDEHelper/Compiler/BfExprEvaluator.cpp
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@ -22925,17 +22925,21 @@ void BfExprEvaluator::PerformBinaryOperation(BfExpression* leftExpression, BfExp
bool BfExprEvaluator::PerformBinaryOperation_NullCoalesce(BfTokenNode* opToken, BfExpression* leftExpression, BfExpression* rightExpression, BfTypedValue leftValue, BfType* wantType, BfTypedValue* assignTo)
{
if ((leftValue) && ((leftValue.mType->IsPointer()) || (leftValue.mType->IsFunction()) || (leftValue.mType->IsObject())) /* || (leftValue.mType->IsNullable())*/)
if ((leftValue) && ((leftValue.mType->IsPointer()) || (leftValue.mType->IsFunction()) || (leftValue.mType->IsObject())) || (leftValue.mType->IsNullable()))
{
leftValue = mModule->LoadValue(leftValue);
BfType* nullableElementType = NULL;
BfIRValue nullableHasValue;
BfTypedValue nullableExtractedLeftValue;
if (leftValue.mType->IsNullable())
{
if (wantType == leftValue.mType)
wantType = leftValue.mType->GetUnderlyingType();
nullableHasValue = mModule->mBfIRBuilder->CreateExtractValue(leftValue.mValue, 1);
leftValue = BfTypedValue(mModule->mBfIRBuilder->CreateExtractValue(leftValue.mValue, 0), leftValue.mType->GetUnderlyingType());
nullableElementType = leftValue.mType->GetUnderlyingType();
nullableHasValue = mModule->mBfIRBuilder->CreateExtractValue(leftValue.mValue, nullableElementType->IsValuelessType() ? 1 : 2); // has_value
if (!nullableElementType->IsValuelessType())
nullableExtractedLeftValue = BfTypedValue(mModule->mBfIRBuilder->CreateExtractValue(leftValue.mValue, 1), nullableElementType); // value
else
nullableExtractedLeftValue = BfTypedValue(mModule->mBfIRBuilder->GetFakeVal(), nullableElementType);
}
if (leftValue.mValue.IsConst())
@ -22984,6 +22988,14 @@ bool BfExprEvaluator::PerformBinaryOperation_NullCoalesce(BfTokenNode* opToken,
mModule->AssertErrorState();
return true;
}
if ((assignTo == NULL) && (leftValue.mType->IsNullable()) && (!rightValue.mType->IsNullable()))
{
if (wantType == leftValue.mType)
wantType = nullableElementType;
leftValue = nullableExtractedLeftValue;
}
rightValue = mModule->LoadValue(rightValue);
if (assignTo == NULL)