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[interop][SwiftToCxx] add static_assert type checking for generic functions in pre-C++20 mode

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In the future we should also use enable_if to correctly resolve overloads
This commit is contained in:
Alex Lorenz
2022-11-01 17:20:48 -07:00
parent 4b52ae08fa
commit a66cc52109
11 changed files with 182 additions and 9 deletions
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22
lib/PrintAsClang/PrintClangFunction.cpp
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@@ -1043,9 +1043,16 @@ void DeclAndTypeClangFunctionPrinter::printGenericReturnSequence(
void DeclAndTypeClangFunctionPrinter::printCxxThunkBody(
const AbstractFunctionDecl *FD, const LoweredFunctionSignature &signature,
StringRef swiftSymbolName, const ModuleDecl *moduleContext, Type resultTy,
const ParameterList *params, bool hasThrows,
const AnyFunctionType *funcType) {
StringRef swiftSymbolName, const NominalTypeDecl *typeDeclContext,
const ModuleDecl *moduleContext, Type resultTy, const ParameterList *params,
bool hasThrows, const AnyFunctionType *funcType) {
if (typeDeclContext)
ClangSyntaxPrinter(os).printNominalTypeOutsideMemberDeclInnerStaticAssert(
typeDeclContext);
if (FD->isGeneric()) {
auto Signature = FD->getGenericSignature().getCanonicalSignature();
ClangSyntaxPrinter(os).printGenericSignatureInnerStaticAsserts(Signature);
}
if (hasThrows) {
os << " void* opaqueError = nullptr;\n";
os << " void* _ctx = nullptr;\n";
@@ -1281,8 +1288,9 @@ void DeclAndTypeClangFunctionPrinter::printCxxMethod(
os << " {\n";
// FIXME: should it be objTy for resultTy?
printCxxThunkBody(FD, signature, swiftSymbolName, FD->getModuleContext(),
resultTy, FD->getParameters(), FD->hasThrows(),
printCxxThunkBody(FD, signature, swiftSymbolName, typeDeclContext,
FD->getModuleContext(), resultTy, FD->getParameters(),
FD->hasThrows(),
FD->getInterfaceType()->castTo<AnyFunctionType>());
os << " }\n";
}
@@ -1340,7 +1348,7 @@ void DeclAndTypeClangFunctionPrinter::printCxxPropertyAccessorMethod(
}
os << " {\n";
// FIXME: should it be objTy for resultTy?
printCxxThunkBody(accessor, signature, swiftSymbolName,
printCxxThunkBody(accessor, signature, swiftSymbolName, typeDeclContext,
accessor->getModuleContext(), resultTy,
accessor->getParameters());
os << " }\n";
@@ -1366,7 +1374,7 @@ void DeclAndTypeClangFunctionPrinter::printCxxSubscriptAccessorMethod(
}
os << " {\n";
// FIXME: should it be objTy for resultTy?
printCxxThunkBody(accessor, signature, swiftSymbolName,
printCxxThunkBody(accessor, signature, swiftSymbolName, typeDeclContext,
accessor->getModuleContext(), resultTy,
accessor->getParameters());
os << " }\n";