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[IUO] Add a locator for the result of a cast to an IUO type. #13717

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Merged
merged 1 commit into from
Jan 4, 2018
Merged

[IUO] Add a locator for the result of a cast to an IUO type. #13717

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5 changes: 5 additions & 0 deletions lib/Sema/ConstraintLocator.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,7 @@ void ConstraintLocator::Profile(llvm::FoldingSetNodeID &id, Expr *anchor,
case KeyPathComponent:
case ConditionalRequirement:
case TypeParameterRequirement:
case ImplicitlyUnwrappedCoercionResult:
if (unsigned numValues = numNumericValuesInPathElement(elt.getKind())) {
id.AddInteger(elt.getValue());
if (numValues > 1)
Expand Down Expand Up @@ -248,6 +249,10 @@ void ConstraintLocator::dump(SourceManager *sm, raw_ostream &out) {
case TypeParameterRequirement:
out << "type parameter requirement #" << llvm::utostr(elt.getValue());
break;

case ImplicitlyUnwrappedCoercionResult:
out << "implictly unwrapped coercion result";
break;
}
}

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5 changes: 5 additions & 0 deletions lib/Sema/ConstraintLocator.h
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Expand Up @@ -127,6 +127,9 @@ class ConstraintLocator : public llvm::FoldingSetNode {
ConditionalRequirement,
/// A single requirement placed on the type parameters.
TypeParameterRequirement,
/// \brief A coercion to an Optional type that can potentially be
/// force-unwrapped to the underlying type.
ImplicitlyUnwrappedCoercionResult,
};

/// \brief Determine the number of numeric values used for the given path
Expand Down Expand Up @@ -159,6 +162,7 @@ class ConstraintLocator : public llvm::FoldingSetNode {
case Requirement:
case Witness:
case OpenedGeneric:
case ImplicitlyUnwrappedCoercionResult:
return 0;

case GenericArgument:
Expand Down Expand Up @@ -221,6 +225,7 @@ class ConstraintLocator : public llvm::FoldingSetNode {
case KeyPathComponent:
case ConditionalRequirement:
case TypeParameterRequirement:
case ImplicitlyUnwrappedCoercionResult:
return 0;

case FunctionArgument:
Expand Down