static ManagedValue emitCBridgedToNativeValue(SILGenFunction &gen,
SILLocation loc,
ManagedValue v,
SILType nativeTy) {
CanType loweredNativeTy = nativeTy.getSwiftRValueType();
CanType loweredBridgedTy = v.getType().getSwiftRValueType();
if (loweredNativeTy == loweredBridgedTy)
return v;
if (loweredNativeTy.getAnyOptionalObjectType()) {
return gen.emitOptionalToOptional(loc, v, nativeTy,
emitCBridgedToNativeValue);
}
// Bridge Bool to ObjCBool or DarwinBoolean when requested.
if (loweredNativeTy == gen.SGM.Types.getBoolType()) {
if (loweredBridgedTy == gen.SGM.Types.getObjCBoolType()) {
return emitBridgeForeignBoolToBool(gen, loc, v,
gen.SGM.getObjCBoolToBoolFn());
}
if (loweredBridgedTy == gen.SGM.Types.getDarwinBooleanType()) {
return emitBridgeForeignBoolToBool(gen, loc, v,
gen.SGM.getDarwinBooleanToBoolFn());
}
}
// Bridge Objective-C to thick metatypes.
if (auto bridgedMetaTy = dyn_cast<AnyMetatypeType>(loweredBridgedTy)){
if (bridgedMetaTy->getRepresentation() == MetatypeRepresentation::ObjC) {
SILValue native = gen.B.emitObjCToThickMetatype(loc, v.getValue(),
gen.getLoweredType(loweredNativeTy));
return ManagedValue(native, v.getCleanup());
}
}
// Bridge blocks back into native function types.
auto bridgedFTy = dyn_cast<SILFunctionType>(loweredBridgedTy);
if (bridgedFTy
&& bridgedFTy->getRepresentation() == SILFunctionType::Representation::Block){
auto nativeFTy = cast<SILFunctionType>(loweredNativeTy);
if (nativeFTy->getRepresentation() != SILFunctionType::Representation::Block)
return gen.emitBlockToFunc(loc, v, nativeFTy);
}
// Bridge via _ObjectiveCBridgeable.
if (auto conformance =
gen.SGM.getConformanceToObjectiveCBridgeable(loc, loweredNativeTy)) {
if (auto result = emitBridgeObjectiveCToNative(gen, loc, v, conformance))
return *result;
assert(gen.SGM.getASTContext().Diags.hadAnyError() &&
"Bridging code should have complained");
return gen.emitUndef(loc, nativeTy);
}
return v;
}
static ManagedValue emitCBridgedToNativeValue(SILGenFunction &gen,
SILLocation loc,
ManagedValue v,
SILType nativeTy) {
CanType loweredNativeTy = nativeTy.getSwiftRValueType();
CanType loweredBridgedTy = v.getType().getSwiftRValueType();
if (loweredNativeTy == loweredBridgedTy)
return v;
if (loweredNativeTy.getAnyOptionalObjectType()) {
return gen.emitOptionalToOptional(loc, v, nativeTy,
emitCBridgedToNativeValue);
}
// Bridge Bool to ObjCBool or DarwinBoolean when requested.
if (loweredNativeTy == gen.SGM.Types.getBoolType()) {
if (loweredBridgedTy == gen.SGM.Types.getObjCBoolType()) {
return emitBridgeForeignBoolToBool(gen, loc, v,
gen.SGM.getObjCBoolToBoolFn());
}
if (loweredBridgedTy == gen.SGM.Types.getDarwinBooleanType()) {
return emitBridgeForeignBoolToBool(gen, loc, v,
gen.SGM.getDarwinBooleanToBoolFn());
}
}
// Bridge Objective-C to thick metatypes.
if (auto bridgedMetaTy = dyn_cast<AnyMetatypeType>(loweredBridgedTy)){
if (bridgedMetaTy->getRepresentation() == MetatypeRepresentation::ObjC) {
SILValue native = gen.B.emitObjCToThickMetatype(loc, v.getValue(),
gen.getLoweredType(loweredNativeTy));
return ManagedValue(native, v.getCleanup());
}
}
// Bridge blocks back into native function types.
auto bridgedFTy = dyn_cast<SILFunctionType>(loweredBridgedTy);
if (bridgedFTy
&& bridgedFTy->getRepresentation() == SILFunctionType::Representation::Block){
auto nativeFTy = cast<SILFunctionType>(loweredNativeTy);
if (nativeFTy->getRepresentation() != SILFunctionType::Representation::Block)
return gen.emitBlockToFunc(loc, v, nativeFTy);
}
// Bridge NSString to String.
if (auto stringDecl = gen.getASTContext().getStringDecl()) {
if (nativeTy.getSwiftRValueType()->getAnyNominal() == stringDecl) {
return emitBridgeNSStringToString(gen, loc, v);
}
}
// Bridge NSArray to Array.
if (auto arrayDecl = gen.getASTContext().getArrayDecl()) {
if (nativeTy.getSwiftRValueType()->getAnyNominal() == arrayDecl) {
SILDeclRef bridgeFn = gen.SGM.getNSArrayToArrayFn();
return emitBridgeCollectionToNative(gen, loc, bridgeFn, v, nativeTy);
}
}
// Bridge NSDictionary to Dictionary.
if (auto dictDecl = gen.getASTContext().getDictionaryDecl()) {
if (nativeTy.getSwiftRValueType()->getAnyNominal() == dictDecl) {
SILDeclRef bridgeFn = gen.SGM.getNSDictionaryToDictionaryFn();
return emitBridgeCollectionToNative(gen, loc, bridgeFn, v, nativeTy);
}
}
// Bridge NSSet to Set.
if (auto setDecl = gen.getASTContext().getSetDecl()) {
if (nativeTy.getSwiftRValueType()->getAnyNominal() == setDecl) {
SILDeclRef bridgeFn = gen.SGM.getNSSetToSetFn();
return emitBridgeCollectionToNative(gen, loc, bridgeFn, v, nativeTy);
}
}
return v;
}
