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Improved pointer generic constraints

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This commit is contained in:
Brian Fiete 2025-03-21 11:37:26 -04:00
parent 0bdaa03545
commit 195463cb77
3 changed files with 27 additions and 9 deletions
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9
IDEHelper/Compiler/BfExprEvaluator.cpp
View file

@ -23498,6 +23498,15 @@ void BfExprEvaluator::PerformUnaryOperation_OnResult(BfExpression* unaryOpExpr,
case BfUnaryOp_Dereference:
{
CheckResultForReading(mResult);
if (mResult.mType->IsGenericParam())
{
auto genericParamInstance = mModule->GetGenericParamInstance((BfGenericParamType*)mResult.mType);
if ((genericParamInstance->mTypeConstraint != NULL) && (genericParamInstance->mTypeConstraint->IsPointer()))
{
mResult = mModule->GetDefaultTypedValue(genericParamInstance->mTypeConstraint->GetUnderlyingType(), false, BfDefaultValueKind_Addr);
break;
}
}
if (!mResult.mType->IsPointer())
{
mResult = BfTypedValue();

17
IDEHelper/Compiler/BfModule.cpp
View file

@ -8859,17 +8859,18 @@ bool BfModule::CheckGenericConstraints(const BfGenericParamSource& genericParamS
}
}
if (checkArgType->IsPointer())
{
auto ptrType = (BfPointerType*)checkArgType;
checkArgType = ptrType->mElementType;
}
auto checkArgElementType = checkArgType;
if (checkArgElementType->IsPointer())
{
auto ptrType = (BfPointerType*)checkArgElementType;
checkArgElementType = ptrType->mElementType;
}
if ((genericParamInst->mGenericParamFlags & BfGenericParamFlag_New) != 0)
{
bool canAlloc = false;
if (auto checkTypeInst = checkArgType->ToTypeInstance())
if (auto checkTypeInst = checkArgElementType->ToTypeInstance())
{
if (checkTypeInst->IsObjectOrStruct())
{
@ -8910,11 +8911,11 @@ bool BfModule::CheckGenericConstraints(const BfGenericParamSource& genericParamS
canAlloc = TypeIsSubTypeOf(mCurTypeInstance, checkTypeInst, false);
}
}
else if (checkArgType->IsGenericParam())
else if (checkArgElementType->IsGenericParam())
{
canAlloc = (checkGenericParamFlags & (BfGenericParamFlag_New | BfGenericParamFlag_Var)) != 0;
}
else if (checkArgType->IsPrimitiveType())
else if (checkArgElementType->IsPrimitiveType())
{
// Any primitive types and stuff can be allocated
canAlloc = true;

8
IDEHelper/Tests/src/Generics.bf
View file

@ -199,6 +199,11 @@ namespace Tests
delete val2;
}
public static int IntPtrTest<T>(T val) where T : int*
{
return *val;
}
public class ClassE
{
public static Self Instance = new ClassE() ~ delete _;
@ -513,6 +518,9 @@ namespace Tests
var innerC = OuterA<int, float>.InnerC.this<int32>(123);
Test.Assert(innerC.mVal == 123);
int iVal = 123;
Test.Assert(IntPtrTest(&iVal) == 123);
}
}