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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System;
using System.Linq;
using ICSharpCode.NRefactory.Semantics;
namespace ICSharpCode.NRefactory.TypeSystem
{
/// <summary>
/// Helper methods for COM.
/// </summary>
public static class ComHelper
{
static bool IsComAttribute(IAttribute attribute, string name)
{
return attribute.AttributeType.Name == name && attribute.AttributeType.Namespace == "System.Runtime.InteropServices";
}
/// <summary>
/// Gets whether the specified type is imported from COM.
/// </summary>
public static bool IsComImport(ITypeDefinition typeDefinition)
{
return typeDefinition != null
&& typeDefinition.Kind == TypeKind.Interface
&& typeDefinition.Attributes.Any(a => IsComAttribute(a, "ComImportAttribute"));
}
/// <summary>
/// Gets the CoClass of the specified COM interface.
/// </summary>
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "Co",
Justification = "Consistent with CoClassAttribute")]
public static IType GetCoClass(ITypeDefinition typeDefinition)
{
if (typeDefinition == null)
return SpecialType.UnknownType;
var coClassAttribute = typeDefinition.Attributes.FirstOrDefault(a => IsComAttribute(a, "CoClassAttribute"));
if (coClassAttribute != null && coClassAttribute.PositionalArguments.Count == 1) {
var rr = coClassAttribute.PositionalArguments[0] as TypeOfResolveResult;
if (rr != null)
return rr.ReferencedType;
}
return SpecialType.UnknownType;
}
}
}
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