//
// Query parameter reference can include transparent parameters
//
protected override Expression GetParameterReferenceExpression(string name, SourceSpan span)
{
var reference = base.GetParameterReferenceExpression(name, span);
if (reference != null)
{
return(reference);
}
var transparentParameter = Parameters[0] as TransparentParameter;
while (transparentParameter != null)
{
if (transparentParameter.Identifier == name)
{
break;
}
var nextTransparentParameter = transparentParameter.Parent[0] as TransparentParameter;
if (nextTransparentParameter == null)
{
if (transparentParameter.Parent.GetParameterIndexByName(name) >= 0)
{
break;
}
}
transparentParameter = nextTransparentParameter;
}
if (transparentParameter != null)
{
reference = new NameExpression
{
Name = Parameters[0].Name,
Span = span
};
var transparentParameterCursor = (TransparentParameter)Parameters[0];
while (transparentParameterCursor != transparentParameter)
{
transparentParameterCursor = (TransparentParameter)transparentParameterCursor.Parent[0];
reference = new MemberAccessExpression
{
Left = reference,
Name = transparentParameterCursor.Name
};
}
return(new MemberAccessExpression
{
Left = reference,
Name = name
});
}
return(null);
}
public TypeNameExpression GetTypeExpression()
{
if (Left == null)
{
return(new TypeNameExpression(BaseName, TypeArguments, Span));
}
if (IsDoubleColon)
{
if (Left.Left != null)
{
throw new SyntaxErrorException("The left side of a :: should be an identifier");
}
var qualifiedAliasMember = new QualifiedAliasMember
{
Alias = Left.Name,
Name = Name,
Span = Span
};
qualifiedAliasMember.TypeArguments.Add(TypeArguments);
return(qualifiedAliasMember);
}
Expression lexpr = Left.GetTypeExpression();
var memberAccessExpression = new MemberAccessExpression
{
Name = Name,
Span = Span,
Left = lexpr
};
memberAccessExpression.TypeArguments.Add(TypeArguments);
return(memberAccessExpression);
}
public override Expression DoResolve(ParseContext ec)
{
// Don't resolve already resolved expression
if (ExpressionClass != ExpressionClass.Invalid)
{
return(this);
}
var resolvedTarget = Target.Resolve(ec, ResolveFlags.VariableOrValue | ResolveFlags.MethodGroup);
if (resolvedTarget == null)
{
return(null);
}
// Next, evaluate all the expressions in the argument list
if (_arguments != null && !_argumentsResolved)
{
_arguments.Resolve(ec);
_argumentsResolved = true;
}
var expressionType = resolvedTarget.Type;
MethodGroup = resolvedTarget as MethodGroupExpression;
if (MethodGroup == null)
{
if (expressionType != null && TypeManager.IsDelegateType(expressionType))
{
MethodGroup = (resolvedTarget = new MemberAccessExpression
{
Left = resolvedTarget,
Name = "Invoke",
Span = Span
}.Resolve(ec)) as MethodGroupExpression;
}
var memberExpression = resolvedTarget as MemberExpression;
if (memberExpression == null)
{
resolvedTarget.OnErrorUnexpectedKind(ec, ResolveFlags.MethodGroup, Span);
return(null);
}
if (MethodGroup == null)
{
MethodGroup = ec.LookupExtensionMethod(
memberExpression.Type,
memberExpression.Name,
Span);
if (MethodGroup != null)
{
((ExtensionMethodGroupExpression)MethodGroup).ExtensionExpression = memberExpression.InstanceExpression;
}
}
if (MethodGroup == null)
{
ec.ReportError(
1955,
string.Format(
"The member '{0}' cannot be used as method or delegate.",
resolvedTarget.GetSignatureForError()),
Span);
return(null);
}
}
MethodGroup = DoResolveOverload(ec);
if (MethodGroup == null)
{
return(null);
}
var method = (MethodInfo)MethodGroup;
if (method != null)
{
Type = method.ReturnType;
// TODO: this is a copy of mg.ResolveMemberAccess method
var instanceExpression = MethodGroup.InstanceExpression;
if (method.IsStatic)
{
if (instanceExpression == null ||
instanceExpression is EmptyExpression ||
MethodGroup.IdenticalTypeName)
{
MethodGroup.InstanceExpression = null;
}
else
{
// TODO: MemberExpression.error176(ec, loc, mg.GetSignatureForError());
return(null);
}
}
else
{
if (instanceExpression == null || instanceExpression == EmptyExpression.Null)
{
// TODO: SimpleName.Error_ObjectRefRequired(ec, loc, mg.GetSignatureForError());
}
}
}
if (method == null)
{
return(null);
}
IsSpecialMethodInvocation(ec, method, Span);
ExpressionClass = ExpressionClass.Value;
return(this);
}