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Better case expression parsing, better enum errors

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This commit is contained in:
Brian Fiete 2022-02-13 21:55:31 -05:00
parent ce8899f1a7
commit 322b83d1c6
3 changed files with 25 additions and 10 deletions
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14
IDEHelper/Compiler/BfExprEvaluator.cpp
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@ -8246,6 +8246,20 @@ BfTypedValue BfExprEvaluator::CheckEnumCreation(BfAstNode* targetSrc, BfTypeInst
if (argValue)
{
if ((argValue.mType->IsRef()) && (argValue.mType->GetUnderlyingType() == resolvedFieldType))
{
if (auto unaryOperator = BfNodeDynCast<BfUnaryOperatorExpression>(argValues.mResolvedArgs[tupleFieldIdx].mExpression))
{
mModule->Fail(StrFormat("Invalid use of '%s'. Enum payloads can only be retrieved through 'case' expressions.", BfGetOpName(unaryOperator->mOp)), unaryOperator->mOpToken);
argValue = mModule->GetDefaultTypedValue(resolvedFieldType);
}
else if (auto varDecl = BfNodeDynCast<BfVariableDeclaration>(argValues.mResolvedArgs[tupleFieldIdx].mExpression))
{
mModule->Fail("Invalid variable declaration. Enum payloads can only be retrieved through 'case' expressions.", varDecl);
argValue = mModule->GetDefaultTypedValue(resolvedFieldType);
}
}
// argValue can have a value even if tuplePtr does not have a value. This can happen if we are assigning to a (void) tuple,
// but we have a value that needs to be attempted to be casted to void
argValue = mModule->Cast(argValues.mResolvedArgs[tupleFieldIdx].mExpression, argValue, resolvedFieldType, wantConst ? BfCastFlags_WantsConst : BfCastFlags_None);