/// <summary>
/// Gets the syntax list of custom attributes that declares atributes for this parameter symbol.
/// </summary>
internal virtual OneOrMany <SyntaxList <AttributeListSyntax> > GetAttributeDeclarations()
{
// C# spec:
// The attributes on the parameters of the resulting method declaration
// are the combined attributes of the corresponding parameters of the defining
// and the implementing partial method declaration in unspecified order.
// Duplicates are not removed.
SyntaxList <AttributeListSyntax> attributes = AttributeDeclarationList;
var sourceMethod = this.ContainingSymbol as SourceMemberMethodSymbol;
if ((object)sourceMethod == null)
{
return(OneOrMany.Create(attributes));
}
SyntaxList <AttributeListSyntax> otherAttributes;
// if this is a definition get the implementation and vice versa
SourceMemberMethodSymbol otherPart = sourceMethod.OtherPartOfPartial;
if ((object)otherPart != null)
{
otherAttributes = ((SourceParameterSymbol)otherPart.Parameters[this.Ordinal]).AttributeDeclarationList;
}
else
{
otherAttributes = default(SyntaxList <AttributeListSyntax>);
}
if (attributes.Equals(default(SyntaxList <AttributeListSyntax>)))
{
return(OneOrMany.Create(otherAttributes));
}
else if (otherAttributes.Equals(default(SyntaxList <AttributeListSyntax>)))
{
return(OneOrMany.Create(attributes));
}
return(OneOrMany.Create(ImmutableArray.Create(attributes, otherAttributes)));
}