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New function/delegate casting rules, similar to tuple rules
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parent
c62dbdf811
commit
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8 changed files with 143 additions and 32 deletions
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@ -9530,6 +9530,62 @@ BfTypedValue BfModule::Cast(BfAstNode* srcNode, const BfTypedValue& typedVal, Bf
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return BfTypedValue();
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}
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// Function->Function and Delegate->Delegate where type is compatible but not exact
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if (((typedVal.mType->IsDelegate()) || (typedVal.mType->IsFunction())) &&
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((typedVal.mType->IsDelegate()) == (toType->IsDelegate())) &&
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((typedVal.mType->IsFunction()) == (toType->IsFunction())))
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{
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auto fromDelegateType = (BfDelegateType*)typedVal.mType->ToTypeInstance();
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auto toDelegateType = (BfDelegateType*)toType;
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if (fromDelegateType->mReturnType == toDelegateType->mReturnType)
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{
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auto fromMethodInst = GetRawMethodByName(fromDelegateType, "Invoke");
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auto toMethodInst = GetRawMethodByName(toDelegateType, "Invoke");
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if ((fromMethodInst->mMethodDef->mCallingConvention == toMethodInst->mMethodDef->mCallingConvention) &&
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(fromMethodInst->mReturnType == toMethodInst->mReturnType) &&
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(fromMethodInst->GetParamCount() == toMethodInst->GetParamCount()))
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{
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bool matched = true;
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StringT<64> fromParamName;
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StringT<64> toParamName;
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for (int paramIdx = 0; paramIdx < (int)fromMethodInst->GetParamCount(); paramIdx++)
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{
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bool nameMatches = true;
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if (!explicitCast)
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{
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fromMethodInst->GetParamName(paramIdx, fromParamName);
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toMethodInst->GetParamName(paramIdx, toParamName);
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if ((!fromParamName.IsEmpty()) && (!toParamName.IsEmpty()))
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nameMatches = fromParamName == toParamName;
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}
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if ((fromMethodInst->GetParamKind(paramIdx) == toMethodInst->GetParamKind(paramIdx)) &&
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(fromMethodInst->GetParamType(paramIdx) == toMethodInst->GetParamType(paramIdx)) &&
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(nameMatches))
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{
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// Matched, required for implicit/explicit
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}
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else
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{
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matched = false;
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break;
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}
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}
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if (matched)
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{
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BfTypedValue loadedVal = LoadValue(typedVal);
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return BfTypedValue(mBfIRBuilder->CreateBitCast(loadedVal.mValue, mBfIRBuilder->MapType(toType)), toType);
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}
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}
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}
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}
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// Struct truncate
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if ((typedVal.mType->IsStruct()) && (toType->IsStruct()))
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{
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@ -10012,6 +10068,16 @@ void BfModule::DoTypeToString(StringImpl& str, BfType* resolvedType, BfTypeNameF
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auto methodDef = delegateType->mTypeDef->mMethods[0];
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switch (methodDef->mCallingConvention)
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{
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case BfCallingConvention_Stdcall:
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str += "[StdCall] ";
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break;
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case BfCallingConvention_Fastcall:
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str += "[FastCall] ";
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break;
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}
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if (resolvedType->IsDelegateFromTypeRef())
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str += "delegate ";
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else
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@ -10024,13 +10090,14 @@ void BfModule::DoTypeToString(StringImpl& str, BfType* resolvedType, BfTypeNameF
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str += ", ";
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auto paramDef = methodDef->mParams[paramIdx];
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BfTypeNameFlags innerFlags = (BfTypeNameFlags)(typeNameFlags & ~(BfTypeNameFlag_OmitNamespace | BfTypeNameFlag_OmitOuterType));
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//TODO: Why was this necessary? It made some errors show incorrectly
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// if (delegateType->mIsUnspecializedTypeVariation)
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// innerFlags = (BfTypeNameFlags)(innerFlags & ~BfTypeNameFlag_ResolveGenericParamNames);
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DoTypeToString(str, delegateType->mParams[paramIdx], innerFlags, genericMethodNameOverrides);
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str += " ";
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str += paramDef->mName;
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if (!paramDef->mName.IsEmpty())
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{
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str += " ";
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str += paramDef->mName;
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}
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}
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str += ")";
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