protected override TypeVariableReference ComputeTypeToUnifyWith(VariableReference inputFacadeVariable, out bool setExpectedMutable)
{
setExpectedMutable = false;
TypeVariableReference other = inputFacadeVariable.TypeVariableReference;
TypeVariableReference u, l;
bool otherIsMutableReference;
bool otherIsReference = TypeVariableSet.TryDecomposeReferenceType(other, out u, out l, out otherIsMutableReference);
TypeVariableReference underlyingType = otherIsReference ? u : other;
NIType literalType;
bool underlyingTypeIsLiteral = TypeVariableSet.TryGetLiteralType(underlyingType, out literalType);
bool inputCoercesToStringSlice = underlyingTypeIsLiteral &&
(literalType == PFTypes.String || literalType == DataTypes.StringSliceType);
bool needsBorrow = !otherIsReference || !underlyingTypeIsLiteral || literalType != DataTypes.StringSliceType;
TypeVariableReference lifetimeType = otherIsReference
? l
: TypeVariableSet.CreateReferenceToLifetimeType(_group.BorrowLifetime);
if (needsBorrow)
{
_stringToSliceNeeded = true;
_group.SetBorrowRequired(false);
}
// If the input is allowed to coerce to a str, we can unify with str;
// otherwise, unify with the underlying type to get a type mismatch.
TypeVariableReference toUnifyUnderlyingType = inputCoercesToStringSlice
? TypeVariableSet.CreateReferenceToLiteralType(DataTypes.StringSliceType)
: underlyingType;
return(TypeVariableSet.CreateReferenceToReferenceType(
false,
toUnifyUnderlyingType,
lifetimeType));
}
public override void UnifyWithConnectedWireTypeAsNodeInput(VariableReference wireFacadeVariable, TerminalTypeUnificationResults unificationResults)
{
TypeVariableSet typeVariableSet = Terminal.GetTypeVariableSet();
ITypeUnificationResult inputUnificationResult = unificationResults.GetTypeUnificationResult(Terminal, TrueVariable.TypeVariableReference, wireFacadeVariable.TypeVariableReference);
typeVariableSet.Unify(TrueVariable.TypeVariableReference, wireFacadeVariable.TypeVariableReference, inputUnificationResult);
TrueVariable.MergeInto(wireFacadeVariable);
string constructorName;
TypeVariableReference innerType, optionType;
if (typeVariableSet.TryDecomposeConstructorType(TrueVariable.TypeVariableReference, out constructorName, out innerType) &&
constructorName == "Option")
{
optionType = TrueVariable.TypeVariableReference;
}
else
{
optionType = typeVariableSet.CreateReferenceToConstructorType("Option", TrueVariable.TypeVariableReference);
}
TypeVariableReference outputTypeReference = _outputTerminalFacade.TrueVariable.TypeVariableReference;
ITypeUnificationResult outputUnificationResult = unificationResults.GetTypeUnificationResult(_outputTerminalFacade.Terminal, outputTypeReference, optionType);
typeVariableSet.Unify(outputTypeReference, optionType, outputUnificationResult);
}
public void CreateTypeVariableReferenceFromVectorOfCopyType_TypeVariableHasCloneTrait()
{
var typeVariableSet = new TypeVariableSet();
TypeVariableReference vectorType = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.Int32.CreateVector());
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, vectorType, "Clone");
}
public void CreateTypeVariableReferenceFromVectorOfNonCopyNonCloneType_TypeVariableDoesNotHaveCloneTrait()
{
var typeVariableSet = new TypeVariableSet();
TypeVariableReference vectorType = typeVariableSet.CreateTypeVariableReferenceFromNIType(DataTypes.FileHandleType.CreateVector());
AssertTypeVariableReferenceDoesNotHaveParameterlessTrait(typeVariableSet, vectorType, "Clone");
}
public void CreateTypeVariableReferenceFromOptionOfNonCopyType_TypeVariableReferenceDoesNotHaveCopyTrait()
{
var typeVariableSet = new TypeVariableSet();
TypeVariableReference optionType = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.String.CreateOption());
AssertTypeVariableReferenceDoesNotHaveParameterlessTrait(typeVariableSet, optionType, "Copy");
}
bool IDfirNodeVisitor <bool> .VisitDataAccessor(DataAccessor dataAccessor)
{
TypeVariableReference dataTypeVariable = _typeVariableSet.CreateTypeVariableReferenceFromNIType(dataAccessor.DataItem.DataType);
_nodeFacade[dataAccessor.Terminal] = new SimpleTerminalFacade(dataAccessor.Terminal, dataTypeVariable);
return(true);
}
bool IDfirNodeVisitor <bool> .VisitExplicitBorrowNode(ExplicitBorrowNode explicitBorrowNode)
{
if (explicitBorrowNode.AlwaysCreateReference && explicitBorrowNode.AlwaysBeginLifetime)
{
bool mutable = explicitBorrowNode.BorrowMode == BorrowMode.Mutable;
Lifetime borrowLifetime = explicitBorrowNode.OutputTerminals.First().DefineLifetimeThatIsBoundedByDiagram();
TypeVariableReference borrowLifetimeType = _typeVariableSet.CreateReferenceToLifetimeType(borrowLifetime);
foreach (var terminalPair in explicitBorrowNode.InputTerminals.Zip(explicitBorrowNode.OutputTerminals))
{
Terminal inputTerminal = terminalPair.Key, outputTerminal = terminalPair.Value;
TypeVariableReference inputTypeVariable = _typeVariableSet.CreateReferenceToNewTypeVariable();
_nodeFacade[inputTerminal] = new SimpleTerminalFacade(inputTerminal, inputTypeVariable);
TypeVariableReference outputReferenceType = _typeVariableSet.CreateReferenceToReferenceType(mutable, inputTypeVariable, borrowLifetimeType);
_nodeFacade[outputTerminal] = new SimpleTerminalFacade(outputTerminal, outputReferenceType);
}
}
else
{
// TODO
throw new NotImplementedException();
}
return(true);
}
public void CreateTypeVariableReferenceFromOptionOfCopyType_TypeVariableReferenceHasCopyTrait()
{
var typeVariableSet = new TypeVariableSet();
TypeVariableReference optionType = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.Int32.CreateOption());
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, optionType, "Copy");
}
public void CreateTypeVariableReferenceFromStringSliceType_TypeVariableReferenceHasExpectedTraits()
{
var typeVariableSet = new TypeVariableSet();
TypeVariableReference stringSliceType = typeVariableSet.CreateTypeVariableReferenceFromNIType(DataTypes.StringSliceType);
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, stringSliceType, "Display");
}
private void InsertStringToSliceAheadOfTerminal(Terminal sliceReceiver, out VariableReference stringReferenceVariable, out Terminal stringReferenceTerminal)
{
FunctionalNode stringToSlice = new FunctionalNode(sliceReceiver.ParentDiagram, Signatures.StringToSliceType);
Terminal stringToSliceInput = stringToSlice.InputTerminals[0],
stringToSliceOutput = stringToSlice.OutputTerminals[0];
VariableReference sliceReceiverTrueVariable = sliceReceiver.GetTrueVariable();
TypeVariableSet typeVariableSet = stringToSliceInput.GetTypeVariableSet();
TypeVariableReference stringSliceReferenceType = sliceReceiverTrueVariable.TypeVariableReference;
TypeVariableReference u, lifetime;
bool m;
typeVariableSet.TryDecomposeReferenceType(stringSliceReferenceType, out u, out lifetime, out m);
TypeVariableReference stringReferenceType = typeVariableSet.CreateReferenceToReferenceType(
false,
typeVariableSet.CreateReferenceToLiteralType(PFTypes.String),
lifetime);
AutoBorrowNodeFacade stringToSliceFacade = AutoBorrowNodeFacade.GetNodeFacade(stringToSlice);
stringToSliceFacade[stringToSliceInput] = new SimpleTerminalFacade(stringToSliceInput, stringReferenceType);
stringToSliceFacade[stringToSliceOutput] = new SimpleTerminalFacade(stringToSliceOutput, default(TypeVariableReference));
sliceReceiver.ConnectedTerminal.ConnectTo(stringToSliceInput);
stringToSliceOutput.WireTogether(sliceReceiver, SourceModelIdSource.NoSourceModelId);
stringToSliceOutput.GetFacadeVariable().MergeInto(sliceReceiverTrueVariable);
stringReferenceVariable = stringToSliceInput.GetFacadeVariable();
stringReferenceTerminal = stringToSliceInput;
}
private static void CreateFacadesForInoutReferenceParameter(
TypeVariableSet typeVariableSet,
AutoBorrowNodeFacade nodeFacade,
NIType parameterDataType,
Terminal inputTerminal,
Terminal outputTerminal,
Dictionary <NIType, TypeVariableReference> genericTypeParameters,
Dictionary <NIType, ReferenceInputTerminalLifetimeGroup> lifetimeFacadeGroups,
Dictionary <NIType, LifetimeTypeVariableGroup> lifetimeVariableGroups)
{
NIType lifetimeType = parameterDataType.GetReferenceLifetimeType();
bool isMutable = parameterDataType.IsMutableReferenceType();
InputReferenceMutability mutability = parameterDataType.GetInputReferenceMutabilityFromType();
var lifetimeGroup = lifetimeVariableGroups[lifetimeType];
ReferenceInputTerminalLifetimeGroup facadeGroup;
if (!lifetimeFacadeGroups.TryGetValue(lifetimeType, out facadeGroup))
{
facadeGroup = nodeFacade.CreateInputLifetimeGroup(mutability, lifetimeGroup.LazyNewLifetime, lifetimeGroup.LifetimeType);
}
// TODO: should not add outputTerminal here if borrow cannot be auto-terminated
// i.e., if there are in-only or out-only parameters that share lifetimeType
TypeVariableReference referentTypeVariableReference = typeVariableSet.CreateTypeVariableReferenceFromNIType(parameterDataType.GetReferentType(), genericTypeParameters);
TypeVariableReference mutabilityTypeVariableReference = mutability == InputReferenceMutability.Polymorphic
? genericTypeParameters[parameterDataType.GetReferenceMutabilityType()]
: default(TypeVariableReference);
facadeGroup.AddTerminalFacade(inputTerminal, referentTypeVariableReference, mutabilityTypeVariableReference, outputTerminal);
}
bool IDfirNodeVisitor <bool> .VisitIterateTunnel(IterateTunnel iterateTunnel)
{
Terminal iteratorInput = iterateTunnel.InputTerminals.ElementAt(0),
itemOutput = iterateTunnel.OutputTerminals.ElementAt(0);
LifetimeTypeVariableGroup lifetimeTypeVariableGroup = LifetimeTypeVariableGroup.CreateFromTerminal(iteratorInput);
TypeVariableReference loopLifetimeReference = _typeVariableSet.CreateReferenceToLifetimeType(itemOutput.GetDiagramLifetime());
TypeVariableReference itemTypeVariable = _typeVariableSet.CreateReferenceToNewTypeVariable();
TypeVariableReference implementsIteratorTypeVariable = _typeVariableSet.CreateReferenceToNewTypeVariable(
new Constraint[] { new IteratorTraitConstraint(itemTypeVariable) });
ReferenceInputTerminalLifetimeGroup group = CreateTerminalLifetimeGroup(InputReferenceMutability.RequireMutable, lifetimeTypeVariableGroup);
group.AddTerminalFacade(iteratorInput, implementsIteratorTypeVariable, default(TypeVariableReference));
_nodeFacade[itemOutput] = new SimpleTerminalFacade(itemOutput, itemTypeVariable);
TypeVariableReference intermediateTypeVariable = _typeVariableSet.CreateReferenceToOptionType(itemTypeVariable);
VariableReference intermediateVariable = iterateTunnel.GetVariableSet().CreateNewVariable(
iterateTunnel.ParentStructure.ParentDiagram.GetLifetimeGraphIdentifier().Id,
intermediateTypeVariable,
false);
intermediateVariable.Name = iterateTunnel.IntermediateValueName;
iterateTunnel.IntermediateValueVariable = intermediateVariable;
iterateTunnel.IteratorNextFunctionType = new FunctionType(
Signatures.IteratorNextType,
new TypeVariableReference[]
{
implementsIteratorTypeVariable,
itemTypeVariable,
group.LifetimeType
});
return(true);
}
protected override void VisitNode(Node node)
{
TypeVariableSet typeVariableSet = node.GetTypeVariableSet();
AutoBorrowNodeFacade nodeFacade = AutoBorrowNodeFacade.GetNodeFacade(node);
var primitive = node as PrimitiveTypeNode;
var selfTypeNode = node as SelfTypeNode;
if (primitive != null)
{
nodeFacade[primitive.OutputTerminal] = new SimpleTerminalFacade(
primitive.OutputTerminal,
typeVariableSet.CreateTypeVariableReferenceFromNIType(primitive.Type));
return;
}
if (selfTypeNode != null)
{
foreach (Terminal inputTerminal in selfTypeNode.InputTerminals)
{
TypeVariableReference typeVariable = typeVariableSet.CreateReferenceToNewTypeVariable();
nodeFacade[inputTerminal] = new SimpleTerminalFacade(inputTerminal, typeVariable);
}
return;
}
throw new NotSupportedException($"Unsupported node type: {node.GetType().Name}");
}
public void CreateTypeVariableReferenceFromSharedType_TypeVariableHasCloneAndDropTraits()
{
var typeVariableSet = new TypeVariableSet();
TypeVariableReference sharedType = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.String.CreateShared());
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, sharedType, "Clone");
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, sharedType, "Drop");
}
bool IDfirNodeVisitor <bool> .VisitDropNode(DropNode dropNode)
{
Terminal valueInput = dropNode.InputTerminals.ElementAt(0);
TypeVariableReference dataTypeVariable = _typeVariableSet.CreateReferenceToNewTypeVariable();
_nodeFacade[valueInput] = new SimpleTerminalFacade(valueInput, dataTypeVariable);
return(true);
}
public void CreateTypeVariableReferenceFromIntegerType_TypeVariableReferenceHasExpectedTraits()
{
var typeVariableSet = new TypeVariableSet();
TypeVariableReference integerType = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.Int32);
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, integerType, "Display");
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, integerType, "Clone");
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, integerType, "Copy");
}
public void CreateTypeVariableReferenceFromBooleanType_TypeVariableReferenceHasExpectedTraits()
{
var typeVariableSet = new TypeVariableSet();
TypeVariableReference booleanType = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.Boolean);
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, booleanType, "Display");
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, booleanType, "Clone");
AssertTypeVariableReferenceHasParameterlessTrait(typeVariableSet, booleanType, "Copy");
}
internal ITypeUnificationResult GetTypeUnificationResult(Terminal terminal, TypeVariableReference terminalTypeVariable, TypeVariableReference unifyWith)
{
TerminalUnificationResult unificationResult;
if (!_unificationResults.TryGetValue(terminal, out unificationResult))
{
_unificationResults[terminal] = unificationResult = new TerminalUnificationResult(terminalTypeVariable, unifyWith);
}
return(new TerminalTypeUnificationResult(unificationResult));
}
public void CreateTypeVariableReferenceFromRangeIteratorType_TypeVariableReferenceHasExpectedIteratorTrait()
{
var typeVariableSet = new TypeVariableSet();
TypeVariableReference rangeIteratorType = typeVariableSet.CreateTypeVariableReferenceFromNIType(DataTypes.RangeIteratorType);
TypeVariableReference iteratorTraitType;
Assert.IsTrue(typeVariableSet.TryGetImplementedTrait(rangeIteratorType, "Iterator", out iteratorTraitType));
Assert.IsTrue(typeVariableSet.GetTypeParameters(iteratorTraitType).First().RenderNIType().IsInt32());
}
public StringSliceReferenceInputTerminalFacade(
Terminal terminal,
ReferenceInputTerminalLifetimeGroup group,
TypeVariableReference referenceTypeReference)
: base(terminal)
{
_group = group;
FacadeVariable = terminal.CreateNewVariable();
TrueVariable = terminal.CreateNewVariable(referenceTypeReference);
}
public ReferenceInputTerminalLifetimeGroup(
AutoBorrowNodeFacade nodeFacade,
InputReferenceMutability mutability,
Lazy <Lifetime> lazyNewLifetime,
TypeVariableReference lifetimeType)
{
_nodeFacade = nodeFacade;
_mutability = mutability;
_lazyBorrowLifetime = lazyNewLifetime;
LifetimeType = lifetimeType;
}
public void TwoDifferentLiteralTypes_Unify_TypeMismatchReported()
{
TypeVariableSet typeVariableSet = new TypeVariableSet();
TypeVariableReference literalReference1 = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.Int32),
literalReference2 = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.Boolean);
var testTypeUnificationResult = new TestTypeUnificationResult();
typeVariableSet.Unify(literalReference2, literalReference1, testTypeUnificationResult);
Assert.IsTrue(testTypeUnificationResult.TypeMismatch);
}
public void LiteralTypeAndConstructorType_Unify_TypeMismatchReported()
{
TypeVariableSet typeVariableSet = new TypeVariableSet();
TypeVariableReference literalReference = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.Int32),
constructorReference = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.Int32.CreateVector());
var testTypeUnificationResult = new TestTypeUnificationResult();
typeVariableSet.Unify(constructorReference, literalReference, testTypeUnificationResult);
Assert.IsTrue(testTypeUnificationResult.TypeMismatch);
}
public void LiteralTypeAndTypeVariable_Unify_BothBecomeLiteralType()
{
TypeVariableSet typeVariableSet = new TypeVariableSet();
TypeVariableReference literalReference = typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.Int32);
TypeVariableReference typeVariable = typeVariableSet.CreateReferenceToNewTypeVariable();
typeVariableSet.Unify(typeVariable, literalReference, new TestTypeUnificationResult());
Assert.IsTrue(literalReference.RenderNIType().IsInt32());
Assert.IsTrue(typeVariable.RenderNIType().IsInt32());
}
public TunnelTerminalFacade(Terminal terminal, TerminalFacade outputTerminalFacade) : base(terminal)
{
LifetimeGraphIdentifier innerDiagramLifetimeGraph = Terminal.ParentDiagram.GetLifetimeGraphIdentifier();
var constraint = new OutlastsLifetimeGraphConstraint(innerDiagramLifetimeGraph);
TypeVariableReference inputTypeReference = terminal.GetTypeVariableSet().CreateReferenceToNewTypeVariable(new List <Constraint>()
{
constraint
});
TrueVariable = terminal.CreateNewVariable(inputTypeReference);
_outputTerminalFacade = outputTerminalFacade;
}
public ReferenceInputTerminalFacade(
Terminal terminal,
InputReferenceMutability mutability,
ReferenceInputTerminalLifetimeGroup group,
TypeVariableReference referenceTypeReference)
: base(terminal)
{
_mutability = mutability;
_group = group;
FacadeVariable = terminal.CreateNewVariable();
TrueVariable = terminal.CreateNewVariable(referenceTypeReference);
}
bool IDfirNodeVisitor <bool> .VisitUnwrapOptionTunnel(UnwrapOptionTunnel unwrapOptionTunnel)
{
Terminal optionInput = unwrapOptionTunnel.InputTerminals[0],
unwrappedOutput = unwrapOptionTunnel.OutputTerminals[0];
TypeVariableReference innerTypeVariable = _typeVariableSet.CreateReferenceToNewTypeVariable();
_nodeFacade[optionInput] = new SimpleTerminalFacade(
optionInput,
_typeVariableSet.CreateReferenceToOptionType(innerTypeVariable));
_nodeFacade[unwrappedOutput] = new SimpleTerminalFacade(unwrappedOutput, innerTypeVariable);
return(true);
}
bool IDfirNodeVisitor <bool> .VisitOptionPatternStructureSelector(OptionPatternStructureSelector optionPatternStructureSelector)
{
Terminal selectorInput = optionPatternStructureSelector.InputTerminals[0],
selectorSomeOutput = optionPatternStructureSelector.OutputTerminals[0];
TypeVariableReference innerTypeVariable = _typeVariableSet.CreateReferenceToNewTypeVariable(),
outerTypeReference = _typeVariableSet.CreateReferenceToOptionType(innerTypeVariable);
_nodeFacade[selectorInput] = new SimpleTerminalFacade(selectorInput, outerTypeReference);
_nodeFacade[selectorSomeOutput] = new SimpleTerminalFacade(selectorSomeOutput, innerTypeVariable);
return(true);
}
public void TwoConstructorTypesWithSameConstructorName_Unify_InnerTypesAreUnified()
{
TypeVariableSet typeVariableSet = new TypeVariableSet();
TypeVariableReference innerTypeVariable = typeVariableSet.CreateReferenceToNewTypeVariable();
TypeVariableReference constructorType1 = typeVariableSet.CreateReferenceToOptionType(innerTypeVariable);
TypeVariableReference constructorType2 = typeVariableSet.CreateReferenceToOptionType(
typeVariableSet.CreateTypeVariableReferenceFromNIType(NITypes.Int32));
typeVariableSet.Unify(constructorType1, constructorType2, new TestTypeUnificationResult());
Assert.IsTrue(innerTypeVariable.RenderNIType().IsInt32());
}
protected override void VisitWire(Wire wire)
{
TypeVariableReference wireTypeVariable = wire.GetTypeVariableSet()
.CreateReferenceToNewTypeVariable(Enumerable.Empty <Constraint>());
AutoBorrowNodeFacade wireFacade = AutoBorrowNodeFacade.GetNodeFacade(wire);
foreach (var terminal in wire.Terminals)
{
wireFacade[terminal] = new SimpleTerminalFacade(terminal, wireTypeVariable);
}
}