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[Diagnostics] Improve diagnostics for generic types with unfulfilled requirements

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This commit is contained in:
Pavel Yaskevich
2017-01-11 03:05:10 -08:00
parent b889e7e83b
commit c158f49417
5 changed files with 234 additions and 67 deletions
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13
include/swift/AST/GenericSignature.h
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@@ -102,6 +102,19 @@ public:
/// array of the generic parameters for the innermost generic type.
ArrayRef<GenericTypeParamType *> getInnermostGenericParams() const;
/// Create a text string that describes the bindings of generic parameters
/// that are relevant to the given set of types, e.g.,
/// "[with T = Bar, U = Wibble]".
///
/// \param types The types that will be scanned for generic type parameters,
/// which will be used in the resulting type.
///
/// \param substitutions The generic parameter -> generic argument
/// substitutions that will have been applied to these types.
/// These are used to produce the "parameter = argument" bindings in the test.
std::string gatherGenericParamBindingsText(
ArrayRef<Type> types, const TypeSubstitutionMap &substitutions) const;
/// Retrieve the requirements.
ArrayRef<Requirement> getRequirements() const {
return const_cast<GenericSignature *>(this)->getRequirementsBuffer();