int GetByRefParamCount(CallableSignature signature)
{
int count = 0;
foreach (IParameter param in signature.Parameters)
{
if (param.IsByRef) ++count;
}
return count;
}
public CallableSignature GetSignature()
{
if (null == _signature)
{
IMethod invoke = GetInvokeMethod();
if (null == invoke) return null;
_signature = invoke.CallableType.GetSignature();
}
return _signature;
}
override public bool Equals(object other)
{
CallableSignature rhs = other as CallableSignature;
if (null == rhs ||
_returnType != rhs._returnType ||
_acceptVarArgs != rhs._acceptVarArgs)
{
return(false);
}
return(AreSameParameters(_parameters, rhs._parameters));
}
internal AnonymousCallableType(TypeSystemServices services, CallableSignature signature)
{
if (null == services)
{
throw new ArgumentNullException("services");
}
if (null == signature)
{
throw new ArgumentNullException("signature");
}
_typeSystemServices = services;
_signature = signature;
}
internal AnonymousCallableType(TypeSystemServices services, CallableSignature signature)
{
if (null == services)
{
throw new ArgumentNullException("services");
}
if (null == signature)
{
throw new ArgumentNullException("signature");
}
_typeSystemServices = services;
_signature = signature;
}
public CallableSignature GetSignature()
{
if (null == _signature)
{
IMethod invoke = GetInvokeMethod();
if (null == invoke)
{
return(null);
}
_signature = invoke.CallableType.GetSignature();
}
return(_signature);
}
public CallableSignature GetSignature()
{
if (_signature == null)
{
CallableSignature definitionSignature = ((ICallableType)_definition).GetSignature();
IParameter[] parameters = GenericMapping.Map(definitionSignature.Parameters);
IType returnType = GenericMapping.Map(definitionSignature.ReturnType);
_signature = new CallableSignature(parameters, returnType);
}
return _signature;
}
public CallableSignature GetSignature()
{
if (_signature == null)
{
CallableSignature definitionSignature = ((ICallableType)_definition).GetSignature();
IParameter[] parameters = GenericMapping.Map(definitionSignature.Parameters);
IType returnType = GenericMapping.Map(definitionSignature.ReturnType);
_signature = new CallableSignature(parameters, returnType);
}
return(_signature);
}
public CallableSignature GetSignature()
{
if (_signature == null)
{
CallableSignature definitionSignature = _definition.GetSignature();
IParameter[] parameters = Array.ConvertAll <IParameter, IParameter>(
definitionSignature.Parameters,
delegate(IParameter p)
{
return(new MappedParameter(_typeSystemServices, (ExternalParameter)p, this));
});
_signature = new CallableSignature(parameters, MapType(definitionSignature.ReturnType));
}
return(_signature);
}
public bool IsCallableTypeAssignableFrom(ICallableType lhs, IType rhs)
{
if (lhs == rhs || Null.Default == rhs)
{
return(true);
}
ICallableType other = rhs as ICallableType;
if (null != other)
{
CallableSignature lvalue = lhs.GetSignature();
CallableSignature rvalue = other.GetSignature();
if (lvalue == rvalue)
{
return(true);
}
IParameter[] lparams = lvalue.Parameters;
IParameter[] rparams = rvalue.Parameters;
if (lparams.Length >= rparams.Length)
{
for (int i = 0; i < rparams.Length; ++i)
{
IType lparamType = lparams[i].Type;
IType rparamType = rparams[i].Type;
if (!AreTypesRelated(lparamType, rparamType))
{
return(false);
}
}
if (VoidType != lvalue.ReturnType &&
VoidType != rvalue.ReturnType)
{
return(AreTypesRelated(lvalue.ReturnType, rvalue.ReturnType));
}
return(true);
}
}
return(false);
}
public bool IsCallableTypeAssignableFrom(ICallableType lhs, IType rhs)
{
if (lhs == rhs)
{
return(true);
}
if (rhs.IsNull())
{
return(true);
}
var other = rhs as ICallableType;
if (null == other)
{
return(false);
}
CallableSignature lvalue = lhs.GetSignature();
CallableSignature rvalue = other.GetSignature();
if (lvalue == rvalue)
{
return(true);
}
IParameter[] lparams = lvalue.Parameters;
IParameter[] rparams = rvalue.Parameters;
if (lparams.Length < rparams.Length)
{
return(false);
}
for (int i = 0; i < rparams.Length; ++i)
{
if (!CanBeReachedFrom(lparams[i].Type, rparams[i].Type))
{
return(false);
}
}
return(CompatibleReturnTypes(lvalue, rvalue));
}
public virtual void VisitCallableType(ICallableType callableType)
{
if (_inCallableTypes.Contains(callableType))
{
return;
}
_inCallableTypes.Push(callableType);
try
{
CallableSignature sig = callableType.GetSignature();
foreach (IParameter parameter in sig.Parameters)
{
Visit(parameter.Type);
}
Visit(sig.ReturnType);
}
finally
{
_inCallableTypes.Pop();
}
}
public Method CreateEndInvokeMethod(ICallableType anonymousType)
{
CallableSignature signature = anonymousType.GetSignature();
Method method = CodeBuilder.CreateRuntimeMethod("EndInvoke", signature.ReturnType);
int delta = 1;
foreach (IParameter p in signature.Parameters)
{
if (p.IsByRef)
{
method.Parameters.Add(
CodeBuilder.CreateParameterDeclaration(++delta,
p.Name,
p.Type,
true));
}
}
delta = method.Parameters.Count;
method.Parameters.Add(
CodeBuilder.CreateParameterDeclaration(delta + 1, "result", TypeSystemServices.Map(typeof(IAsyncResult))));
return(method);
}
private static int CalculateCallableScore(ICallableType parameterType, ICallableType argType)
{
// upcast
// parameterType == ICallableType, "ThreadStart"
// argumentType == ICallableType, "Anonymous Closure"
// RULES:
// Number of arguments for argumentType && parameterType == same
// Either: all arguments "IsAssignableFrom"
// OR
// all arguments == exactly (best case scenario)
// ExactMatch -- (best case)
// UpCast -- "not exact match, but very close" (this is OK)
// ImplicitConversion -- "assignable, but wrong number of parameters / whatever" (boo does the normal thing)
CallableSignature siggyType = parameterType.GetSignature();
CallableSignature siggyArg = argType.GetSignature();
// Ensuring that these callables have same number of arguments.
// def foo(a, b,c) == { a, b, c| print foobar }
if (siggyType.Parameters.Length != siggyArg.Parameters.Length)
{
return(UpCastScore);
}
for (int i = 0; i < siggyType.Parameters.Length; i++)
{
if (siggyType.Parameters[i].Type != siggyArg.Parameters[i].Type)
{
// In the case that these parameters simply don't match
if (!siggyType.Parameters[i].Type.IsAssignableFrom(siggyArg.Parameters[i].Type))
{
return(ImplicitConversionScore);
}
return(UpCastScore);
}
}
return(ExactMatchScore);
}
public ICallableType GetCallableType(IMethodBase method)
{
var signature = new CallableSignature(method);
return GetCallableType(signature);
}
private IType[] GetParameterTypes(CallableSignature signature)
{
return Array.ConvertAll<IParameter, IType>(
signature.Parameters,
delegate(IParameter p) { return p.Type; });
}
/// <summary>
/// Maps a type involving generic parameters to the corresponding type after substituting concrete
/// arguments for generic parameters.
/// </summary>
/// <remarks>
/// If the source type is a generic parameter, it is mapped to the corresponding argument.
/// If the source type is an open generic type using any of the specified generic parameters, it
/// is mapped to a closed constructed type based on the specified arguments.
/// TODO: complete this
/// </remarks>
public IType MapType(IType sourceType)
{
if (sourceType == null)
{
return(null);
}
// If sourceType is a reference type, map its element type
if (sourceType.IsByRef)
{
return(MapType(sourceType.GetElementType()));
}
// Map generic parameter to corresponding argument
IGenericParameter gp = sourceType as IGenericParameter;
if (null != gp && _map.ContainsKey(gp))
{
return(_map[gp]);
}
// Map open constructed type using generic parameters to closed constructed type
// using corresponding arguments
if (null != sourceType.GenericTypeInfo)
{
IType[] mappedArguments = Array.ConvertAll <IType, IType>(
sourceType.GenericTypeInfo.GenericArguments,
MapType);
IType mapped = sourceType.GenericTypeInfo.
GenericDefinition.GenericTypeDefinitionInfo.
MakeGenericType(mappedArguments);
return(mapped);
}
// Map array types
IArrayType array = (sourceType as IArrayType);
if (array != null)
{
IType elementType = array.GetElementType();
IType mappedElementType = MapType(elementType);
if (mappedElementType != elementType)
{
return(_tss.GetArrayType(mappedElementType, array.GetArrayRank()));
}
}
// Map callable types
ICallableType callable = sourceType as ICallableType;
if (callable != null)
{
CallableSignature signature = callable.GetSignature();
IType returnType = MapType(signature.ReturnType);
IParameter[] parameters = Array.ConvertAll <IParameter, IParameter>(
signature.Parameters,
delegate(IParameter p) { return(new MappedParameter(_tss, (ExternalParameter)p, this)); });
CallableSignature mappedSignature = new CallableSignature(
parameters, returnType, signature.AcceptVarArgs);
return(_tss.GetCallableType(mappedSignature));
}
// If source type doesn't require mapping, return it as is
return(sourceType);
}
public virtual IType GetConcreteCallableType(Node sourceNode, CallableSignature signature)
{
return(_anonymousCallablesManager.GetConcreteCallableType(sourceNode, signature));
}
public static bool CheckOverrideSignature(IParameter[] implParameters, IParameter[] baseParameters)
{
return(CallableSignature.AreSameParameters(implParameters, baseParameters));
}
private bool CompatibleReturnTypes(CallableSignature lvalue, CallableSignature rvalue)
{
if (VoidType != lvalue.ReturnType && VoidType != rvalue.ReturnType)
return CanBeReachedFrom(lvalue.ReturnType, rvalue.ReturnType);
return true;
}
public ICallableType GetCallableType(IMethodBase method)
{
var signature = new CallableSignature(method);
return(GetCallableType(signature));
}
public AnonymousCallableType GetCallableType(IMethod method)
{
CallableSignature signature = new CallableSignature(method);
return(GetCallableType(signature));
}
public AnonymousCallableType GetCallableType(CallableSignature signature)
{
AnonymousCallableType type = GetCachedCallableType(signature);
if (type == null)
{
type = new AnonymousCallableType(TypeSystemServices, signature);
_cache.Add(signature, type);
}
return type;
}
public IType GetConcreteCallableType(Node sourceNode, CallableSignature signature)
{
AnonymousCallableType type = GetCallableType(signature);
return(GetConcreteCallableType(sourceNode, type));
}
/// <summary>
/// Maps a type involving generic parameters to the corresponding type after substituting concrete
/// arguments for generic parameters.
/// </summary>
/// <remarks>
/// If the source type is a generic parameter, it is mapped to the corresponding argument.
/// If the source type is an open generic type using any of the specified generic parameters, it
/// is mapped to a closed constructed type based on the specified arguments.
/// </remarks>
protected virtual IType MapType(IType sourceType)
{
if (sourceType == null)
{
return(null);
}
// Strip reference types
if (sourceType.IsByRef)
{
return(MapType(sourceType.GetElementType()));
}
// Map generic parameter to corresponding argument
IGenericParameter gp = sourceType as IGenericParameter;
if (null != gp && _map.ContainsKey(gp))
{
return(_map[gp]);
}
// Map open constructed type using generic parameters to closed constructed type
// using corresponding arguments
if (null != sourceType.ConstructedInfo)
{
IType[] mappedArguments = Array.ConvertAll <IType, IType>(
sourceType.ConstructedInfo.GenericArguments,
MapType);
IType mapped = sourceType.ConstructedInfo.
GenericDefinition.GenericInfo.
ConstructType(mappedArguments);
return(mapped);
}
// TODO: Map nested types
// GenericType[of T].NestedType => GenericType[of int].NestedType
// Map array types
IArrayType array = (sourceType as IArrayType);
if (array != null)
{
IType elementType = array.GetElementType();
IType mappedElementType = MapType(elementType);
if (mappedElementType != elementType)
{
return(_tss.GetArrayType(mappedElementType, array.GetArrayRank()));
}
}
// Map callable types
ICallableType callable = sourceType as ICallableType;
if (callable != null)
{
CallableSignature signature = callable.GetSignature();
IType returnType = MapType(signature.ReturnType);
IParameter[] parameters = Map(signature.Parameters);
CallableSignature mappedSignature = new CallableSignature(
parameters, returnType, signature.AcceptVarArgs);
return(_tss.GetCallableType(mappedSignature));
}
// If source type doesn't require mapping, return it as is
return(sourceType);
}
public AnonymousCallableType GetCallableType(IMethod method)
{
CallableSignature signature = new CallableSignature(method);
return GetCallableType(signature);
}
private bool CompatibleReturnTypes(CallableSignature lvalue, CallableSignature rvalue)
{
if (VoidType != lvalue.ReturnType && VoidType != rvalue.ReturnType)
{
return AreTypesRelated(lvalue.ReturnType, rvalue.ReturnType);
}
return true;
}
private void InitializeDependencies(IGenericParameter[] genericParameters, CallableSignature signature)
{
IType[] parameterTypes = GetParameterTypes(signature);
foreach (IType parameterType in parameterTypes)
{
ICallableType callableParameterType = parameterType as ICallableType;
if (callableParameterType == null) continue;
CalculateDependencies(callableParameterType.GetSignature());
}
}
public ICallableType GetCallableType(CallableSignature signature)
{
return _anonymousCallablesManager.GetCallableType(signature);
}
void ImplementRegularICallableCall(
Method call,
InternalCallableType type,
ClassDefinition node,
CallableSignature signature)
{
MethodInvocationExpression mie = CreateInvokeInvocation(type);
IParameter[] parameters = signature.Parameters;
int fixedParametersLength = signature.AcceptVarArgs ? parameters.Length - 1 : parameters.Length;
for (int i=0; i<fixedParametersLength; ++i)
{
SlicingExpression slice = CodeBuilder.CreateSlicing(
CodeBuilder.CreateReference(call.Parameters[0]),
i);
mie.Arguments.Add(slice);
}
if (signature.AcceptVarArgs)
{
if (parameters.Length == 1)
{
mie.Arguments.Add(CodeBuilder.CreateReference(call.Parameters[0]));
}
else
{
mie.Arguments.Add(
CodeBuilder.CreateMethodInvocation(
RuntimeServices_GetRange1,
CodeBuilder.CreateReference(call.Parameters[0]),
CodeBuilder.CreateIntegerLiteral(fixedParametersLength)));
}
}
if (TypeSystemServices.VoidType == signature.ReturnType)
{
call.Body.Add(mie);
}
else
{
call.Body.Add(new ReturnStatement(mie));
}
}
public virtual IType GetConcreteCallableType(Node sourceNode, CallableSignature signature)
{
return _anonymousCallablesManager.GetConcreteCallableType(sourceNode, signature);
}
void ImplementByRefICallableCall(
Method call,
InternalCallableType type,
ClassDefinition node,
CallableSignature signature,
int byRefCount)
{
MethodInvocationExpression mie = CreateInvokeInvocation(type);
IParameter[] parameters = signature.Parameters;
ReferenceExpression args = CodeBuilder.CreateReference(call.Parameters[0]);
InternalLocal[] temporaries = new InternalLocal[byRefCount];
int byRefIndex = 0;
for (int i=0; i<parameters.Length; ++i)
{
SlicingExpression slice = CodeBuilder.CreateSlicing(args.CloneNode(), i);
IParameter parameter = parameters[i];
if (parameter.IsByRef)
{
IType tempType = parameter.Type;
if (tempType.IsByRef)
{
tempType = tempType.ElementType;
}
temporaries[byRefIndex] = CodeBuilder.DeclareLocal(call,
"__temp_" + parameter.Name,
tempType);
call.Body.Add(
CodeBuilder.CreateAssignment(
CodeBuilder.CreateReference(temporaries[byRefIndex]),
CodeBuilder.CreateCast(
tempType,
slice)));
mie.Arguments.Add(
CodeBuilder.CreateReference(
temporaries[byRefIndex]));
++byRefIndex;
}
else
{
mie.Arguments.Add(slice);
}
}
if (TypeSystemServices.VoidType == signature.ReturnType)
{
call.Body.Add(mie);
PropagateByRefParameterChanges(call, parameters, temporaries);
}
else
{
InternalLocal invokeReturnValue = CodeBuilder.DeclareLocal(call,
"__returnValue", signature.ReturnType);
call.Body.Add(
CodeBuilder.CreateAssignment(
CodeBuilder.CreateReference(invokeReturnValue),
mie));
PropagateByRefParameterChanges(call, parameters, temporaries);
call.Body.Add(
new ReturnStatement(
CodeBuilder.CreateReference(invokeReturnValue)));
}
}
private AnonymousCallableType GetCachedCallableType(CallableSignature signature)
{
AnonymousCallableType result = null;
_cache.TryGetValue(signature, out result);
return result;
}
/// <summary>
/// Maps a type involving generic parameters to the corresponding type after substituting concrete
/// arguments for generic parameters.
/// </summary>
/// <remarks>
/// If the source type is a generic parameter, it is mapped to the corresponding argument.
/// If the source type is an open generic type using any of the specified generic parameters, it
/// is mapped to a closed constructed type based on the specified arguments.
/// </remarks>
protected virtual IType MapType(IType sourceType)
{
if (sourceType == null)
{
return null;
}
// Strip reference types
if (sourceType.IsByRef)
{
return MapType(sourceType.GetElementType());
}
// Map generic parameter to corresponding argument
IGenericParameter gp = sourceType as IGenericParameter;
if (null != gp && _map.ContainsKey(gp))
{
return _map[gp];
}
// Map open constructed type using generic parameters to closed constructed type
// using corresponding arguments
if (null != sourceType.ConstructedInfo)
{
IType[] mappedArguments = Array.ConvertAll<IType, IType>(
sourceType.ConstructedInfo.GenericArguments,
MapType);
IType mapped = sourceType.ConstructedInfo.
GenericDefinition.GenericInfo.
ConstructType(mappedArguments);
return mapped;
}
// TODO: Map nested types
// GenericType[of T].NestedType => GenericType[of int].NestedType
// Map array types
IArrayType array = (sourceType as IArrayType);
if (array != null)
{
IType elementType = array.GetElementType();
IType mappedElementType = MapType(elementType);
if (mappedElementType != elementType)
{
return _tss.GetArrayType(mappedElementType, array.GetArrayRank());
}
}
// Map callable types
ICallableType callable = sourceType as ICallableType;
if (callable != null && EntityNeedsMapping(callable))
{
CallableSignature signature = callable.GetSignature();
IType returnType = MapType(signature.ReturnType);
IParameter[] parameters = Map(signature.Parameters);
CallableSignature mappedSignature = new CallableSignature(
parameters, returnType, signature.AcceptVarArgs);
return _tss.GetCallableType(mappedSignature);
}
// If source type doesn't require mapping, return it as is
return sourceType;
}
public ICallableType GetCallableType(CallableSignature signature)
{
return(_anonymousCallablesManager.GetCallableType(signature));
}
Method CreateInvokeMethod(AnonymousCallableType anonymousType)
{
CallableSignature signature = anonymousType.GetSignature();
return(CodeBuilder.CreateRuntimeMethod("Invoke", signature.ReturnType, signature.Parameters, signature.AcceptVarArgs));
}
public IType GetConcreteCallableType(Node sourceNode, CallableSignature signature)
{
AnonymousCallableType type = GetCallableType(signature);
return GetConcreteCallableType(sourceNode, type);
}
public IType GetConcreteCallableType(Node sourceNode, CallableSignature signature)
{
var type = GetCallableType(signature);
var anonymous = type as AnonymousCallableType;
return anonymous != null ? GetConcreteCallableType(sourceNode, anonymous) : type;
}
public static CompilerWarning InvalidEventUnsubscribe(Node node, string eventName, CallableSignature expected)
{
return new CompilerWarning("BCW0005", AstUtil.SafeLexicalInfo(node), eventName, expected);
}
private void CalculateDependencies(CallableSignature signature)
{
foreach (IType inputType in GetParameterTypes(signature))
{
CalculateDependencies(inputType, signature.ReturnType);
}
}