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)));
}
}
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));
}
}
MethodInvocationExpression CreateInvokeInvocation(InternalCallableType type)
{
return CodeBuilder.CreateMethodInvocation(
CodeBuilder.CreateSelfReference(type),
type.GetInvokeMethod());
}
void ImplementICallableCall(InternalCallableType type, ClassDefinition node)
{
Method call = (Method)node.Members["Call"];
Debug.Assert(null != call);
Debug.Assert(call.Body.IsEmpty);
CallableSignature signature = type.GetSignature();
int byRefCount = GetByRefParamCount(signature);
if (byRefCount > 0)
{
ImplementByRefICallableCall(call, type, node, signature, byRefCount);
}
else
{
ImplementRegularICallableCall(call, type, node, signature);
}
}