bool IDfirNodeVisitor <bool> .VisitDecomposeTupleNode(DecomposeTupleNode decomposeTupleNode)
{
TypeVariableReference[] elementTypes = new TypeVariableReference[decomposeTupleNode.OutputTerminals.Count];
TypeVariableReference mutabilityType = default(TypeVariableReference);
ReferenceInputTerminalLifetimeGroup inputTerminalGroup = null;
if (decomposeTupleNode.DecomposeMode == DecomposeMode.Borrow)
{
mutabilityType = _typeVariableSet.CreateReferenceToMutabilityType();
var lifetimeVariableGroup = LifetimeTypeVariableGroup.CreateFromNode(decomposeTupleNode);
inputTerminalGroup = _nodeFacade.CreateInputLifetimeGroup(
InputReferenceMutability.Polymorphic,
lifetimeVariableGroup.LazyNewLifetime,
lifetimeVariableGroup.LifetimeType);
}
for (int i = 0; i < decomposeTupleNode.OutputTerminals.Count; ++i)
{
Terminal outputTerminal = decomposeTupleNode.OutputTerminals[i];
TypeVariableReference elementType = _typeVariableSet.CreateReferenceToNewTypeVariable();
TypeVariableReference outputTerminalType = decomposeTupleNode.DecomposeMode == DecomposeMode.Borrow
? _typeVariableSet.CreateReferenceToPolymorphicReferenceType(
mutabilityType,
elementType,
inputTerminalGroup.LifetimeType)
: elementType;
_nodeFacade[outputTerminal] = new SimpleTerminalFacade(outputTerminal, outputTerminalType);
elementTypes[i] = elementType;
}
TypeVariableReference tupleType = _typeVariableSet.CreateReferenceToTupleType(elementTypes);
Terminal inputTerminal = decomposeTupleNode.InputTerminals[0];
if (decomposeTupleNode.DecomposeMode == DecomposeMode.Borrow)
{
inputTerminalGroup.AddTerminalFacade(
inputTerminal,
tupleType,
mutabilityType);
}
else
{
_nodeFacade[inputTerminal] = new SimpleTerminalFacade(inputTerminal, tupleType);
}
return(true);
}
bool IDfirNodeVisitor <bool> .VisitStructFieldAccessorNode(StructFieldAccessorNode structFieldAccessorNode)
{
TypeVariableReference mutabilityType = _typeVariableSet.CreateReferenceToMutabilityType();
var lifetimeVariableGroup = LifetimeTypeVariableGroup.CreateFromNode(structFieldAccessorNode);
ReferenceInputTerminalLifetimeGroup inputTerminalGroup = CreateTerminalLifetimeGroup(
InputReferenceMutability.Polymorphic,
lifetimeVariableGroup);
var fieldTypes = new Dictionary <string, TypeVariableReference>();
foreach (var terminalPair in structFieldAccessorNode.OutputTerminals.Zip(structFieldAccessorNode.FieldNames))
{
string fieldName = terminalPair.Value;
TypeVariableReference fieldType;
if (string.IsNullOrEmpty(fieldName))
{
fieldType = _typeVariableSet.CreateReferenceToNewTypeVariable();
}
else if (!fieldTypes.TryGetValue(fieldName, out fieldType))
{
fieldType = _typeVariableSet.CreateReferenceToNewTypeVariable();
fieldTypes[fieldName] = fieldType;
}
TypeVariableReference terminalTypeVariable = _typeVariableSet.CreateReferenceToPolymorphicReferenceType(
mutabilityType,
fieldType,
inputTerminalGroup.LifetimeType);
Terminal outputTerminal = terminalPair.Key;
_nodeFacade[outputTerminal] = new SimpleTerminalFacade(outputTerminal, terminalTypeVariable);
}
TypeVariableReference fieldedType = _typeVariableSet.CreateReferenceToIndefiniteFieldedType(fieldTypes);
inputTerminalGroup.AddTerminalFacade(
structFieldAccessorNode.StructInputTerminal,
fieldedType,
mutabilityType);
return(true);
}
public static void CreateFacadesForFunctionSignatureNode(this Node node, NIType nodeFunctionSignature)
{
int inputIndex = 0, outputIndex = 0;
var genericTypeParameters = new Dictionary <NIType, TypeVariableReference>();
var lifetimeFacadeGroups = new Dictionary <NIType, ReferenceInputTerminalLifetimeGroup>();
var lifetimeVariableGroups = new Dictionary <NIType, LifetimeTypeVariableGroup>();
TypeVariableSet typeVariableSet = node.GetTypeVariableSet();
AutoBorrowNodeFacade nodeFacade = AutoBorrowNodeFacade.GetNodeFacade(node);
TypeVariableReference[] signatureTypeParameters;
if (nodeFunctionSignature.IsOpenGeneric())
{
Func <NIType, TypeVariableReference> createLifetimeTypeReference = type =>
{
var group = LifetimeTypeVariableGroup.CreateFromNode(node);
lifetimeVariableGroups[type] = group;
return(group.LifetimeType);
};
genericTypeParameters = typeVariableSet.CreateTypeVariablesForGenericParameters(nodeFunctionSignature, createLifetimeTypeReference);
signatureTypeParameters = nodeFunctionSignature.GetGenericParameters().Select(p => genericTypeParameters[p]).ToArray();
}
else
{
signatureTypeParameters = new TypeVariableReference[0];
}
var functionalNode = node as FunctionalNode;
if (functionalNode != null)
{
functionalNode.FunctionType = new FunctionType(nodeFunctionSignature, signatureTypeParameters);
}
foreach (NIType parameter in nodeFunctionSignature.GetParameters())
{
NIType parameterDataType = parameter.GetDataType();
bool isInput = parameter.GetInputParameterPassingRule() != NIParameterPassingRule.NotAllowed,
isOutput = parameter.GetOutputParameterPassingRule() != NIParameterPassingRule.NotAllowed;
Terminal inputTerminal = null, outputTerminal = null;
if (isInput)
{
inputTerminal = node.InputTerminals[inputIndex];
++inputIndex;
}
if (isOutput)
{
outputTerminal = node.OutputTerminals[outputIndex];
++outputIndex;
}
if (isInput && isOutput)
{
if (parameterDataType.IsRebarReferenceType())
{
CreateFacadesForInoutReferenceParameter(
typeVariableSet,
nodeFacade,
parameterDataType,
inputTerminal,
outputTerminal,
genericTypeParameters,
lifetimeFacadeGroups,
lifetimeVariableGroups);
}
else
{
throw new NotSupportedException("Inout parameters must be reference types.");
}
}
else if (isOutput)
{
TypeVariableReference typeVariableReference = typeVariableSet.CreateTypeVariableReferenceFromNIType(parameterDataType, genericTypeParameters);
nodeFacade[outputTerminal] = new SimpleTerminalFacade(outputTerminal, typeVariableReference);
}
else if (isInput)
{
if (parameterDataType.IsRebarReferenceType())
{
CreateFacadesForInoutReferenceParameter(
typeVariableSet,
nodeFacade,
parameterDataType,
inputTerminal,
null,
genericTypeParameters,
lifetimeFacadeGroups,
lifetimeVariableGroups);
}
else
{
TypeVariableReference typeVariableReference = typeVariableSet.CreateTypeVariableReferenceFromNIType(parameterDataType, genericTypeParameters);
nodeFacade[inputTerminal] = new SimpleTerminalFacade(inputTerminal, typeVariableReference);
}
}
else
{
throw new NotSupportedException("Parameter is neither input nor output");
}
}
}
bool IDfirNodeVisitor <bool> .VisitFunctionalNode(FunctionalNode functionalNode)
{
int inputIndex = 0, outputIndex = 0;
var genericTypeParameters = new Dictionary <NIType, TypeVariableReference>();
var lifetimeFacadeGroups = new Dictionary <NIType, ReferenceInputTerminalLifetimeGroup>();
var lifetimeVariableGroups = new Dictionary <NIType, LifetimeTypeVariableGroup>();
if (functionalNode.Signature.IsOpenGeneric())
{
Func <NIType, TypeVariableReference> createLifetimeTypeReference = type =>
{
var group = LifetimeTypeVariableGroup.CreateFromNode(functionalNode);
lifetimeVariableGroups[type] = group;
return(group.LifetimeType);
};
genericTypeParameters = _typeVariableSet.CreateTypeVariablesForGenericParameters(functionalNode.Signature, createLifetimeTypeReference);
}
foreach (NIType parameter in functionalNode.Signature.GetParameters())
{
NIType parameterDataType = parameter.GetDataType();
bool isInput = parameter.GetInputParameterPassingRule() != NIParameterPassingRule.NotAllowed,
isOutput = parameter.GetOutputParameterPassingRule() != NIParameterPassingRule.NotAllowed;
Terminal inputTerminal = null, outputTerminal = null;
if (isInput)
{
inputTerminal = functionalNode.InputTerminals[inputIndex];
++inputIndex;
}
if (isOutput)
{
outputTerminal = functionalNode.OutputTerminals[outputIndex];
++outputIndex;
}
if (isInput && isOutput)
{
if (parameterDataType.IsRebarReferenceType())
{
CreateFacadesForInoutReferenceParameter(
parameterDataType,
inputTerminal,
outputTerminal,
genericTypeParameters,
lifetimeFacadeGroups,
lifetimeVariableGroups);
}
else
{
throw new NotSupportedException("Inout parameters must be reference types.");
}
}
else if (isOutput)
{
TypeVariableReference typeVariableReference = _typeVariableSet.CreateTypeVariableReferenceFromNIType(parameterDataType, genericTypeParameters);
_nodeFacade[outputTerminal] = new SimpleTerminalFacade(outputTerminal, typeVariableReference);
}
else if (isInput)
{
if (parameterDataType.IsRebarReferenceType())
{
CreateFacadesForInoutReferenceParameter(
parameterDataType,
inputTerminal,
null,
genericTypeParameters,
lifetimeFacadeGroups,
lifetimeVariableGroups);
}
else
{
TypeVariableReference typeVariableReference = _typeVariableSet.CreateTypeVariableReferenceFromNIType(parameterDataType, genericTypeParameters);
_nodeFacade[inputTerminal] = new SimpleTerminalFacade(inputTerminal, typeVariableReference);
}
}
else
{
throw new NotSupportedException("Parameter is neither input nor output");
}
}
return(true);
}