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// Copyright (c) 2010-2013 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.Collections.Generic;
using ICSharpCode.NRefactory.TypeSystem.Implementation;
namespace ICSharpCode.NRefactory.TypeSystem
{
/// <summary>
/// Represents an array type.
/// </summary>
public sealed class ArrayType : TypeWithElementType, ICompilationProvider
{
readonly int dimensions;
readonly ICompilation compilation;
public ArrayType(ICompilation compilation, IType elementType, int dimensions = 1) : base(elementType)
{
if (compilation == null)
throw new ArgumentNullException("compilation");
if (dimensions <= 0)
throw new ArgumentOutOfRangeException("dimensions", dimensions, "dimensions must be positive");
this.compilation = compilation;
this.dimensions = dimensions;
ICompilationProvider p = elementType as ICompilationProvider;
if (p != null && p.Compilation != compilation)
throw new InvalidOperationException("Cannot create an array type using a different compilation from the element type.");
}
public override TypeKind Kind {
get { return TypeKind.Array; }
}
public ICompilation Compilation {
get { return compilation; }
}
public int Dimensions {
get { return dimensions; }
}
public override string NameSuffix {
get {
return "[" + new string(',', dimensions-1) + "]";
}
}
public override bool? IsReferenceType {
get { return true; }
}
public override int GetHashCode()
{
return unchecked(elementType.GetHashCode() * 71681 + dimensions);
}
public override bool Equals(IType other)
{
ArrayType a = other as ArrayType;
return a != null && elementType.Equals(a.elementType) && a.dimensions == dimensions;
}
public override ITypeReference ToTypeReference()
{
return new ArrayTypeReference(elementType.ToTypeReference(), dimensions);
}
public override IEnumerable<IType> DirectBaseTypes {
get {
List<IType> baseTypes = new List<IType>();
IType t = compilation.FindType(KnownTypeCode.Array);
if (t.Kind != TypeKind.Unknown)
baseTypes.Add(t);
if (dimensions == 1 && elementType.Kind != TypeKind.Pointer) {
// single-dimensional arrays implement IList<T>
ITypeDefinition def = compilation.FindType(KnownTypeCode.IListOfT) as ITypeDefinition;
if (def != null)
baseTypes.Add(new ParameterizedType(def, new[] { elementType }));
// And in .NET 4.5 they also implement IReadOnlyList<T>
def = compilation.FindType(KnownTypeCode.IReadOnlyListOfT) as ITypeDefinition;
if (def != null)
baseTypes.Add(new ParameterizedType(def, new[] { elementType }));
}
return baseTypes;
}
}
public override IEnumerable<IMethod> GetMethods(Predicate<IUnresolvedMethod> filter = null, GetMemberOptions options = GetMemberOptions.None)
{
if ((options & GetMemberOptions.IgnoreInheritedMembers) == GetMemberOptions.IgnoreInheritedMembers)
return EmptyList<IMethod>.Instance;
else
return compilation.FindType(KnownTypeCode.Array).GetMethods(filter, options);
}
public override IEnumerable<IMethod> GetMethods(IList<IType> typeArguments, Predicate<IUnresolvedMethod> filter = null, GetMemberOptions options = GetMemberOptions.None)
{
if ((options & GetMemberOptions.IgnoreInheritedMembers) == GetMemberOptions.IgnoreInheritedMembers)
return EmptyList<IMethod>.Instance;
else
return compilation.FindType(KnownTypeCode.Array).GetMethods(typeArguments, filter, options);
}
public override IEnumerable<IMethod> GetAccessors(Predicate<IUnresolvedMethod> filter = null, GetMemberOptions options = GetMemberOptions.None)
{
if ((options & GetMemberOptions.IgnoreInheritedMembers) == GetMemberOptions.IgnoreInheritedMembers)
return EmptyList<IMethod>.Instance;
else
return compilation.FindType(KnownTypeCode.Array).GetAccessors(filter, options);
}
public override IEnumerable<IProperty> GetProperties(Predicate<IUnresolvedProperty> filter = null, GetMemberOptions options = GetMemberOptions.None)
{
if ((options & GetMemberOptions.IgnoreInheritedMembers) == GetMemberOptions.IgnoreInheritedMembers)
return EmptyList<IProperty>.Instance;
else
return compilation.FindType(KnownTypeCode.Array).GetProperties(filter, options);
}
// NestedTypes, Events, Fields: System.Array doesn't have any; so we can use the AbstractType default implementation
// that simply returns an empty list
public override IType AcceptVisitor(TypeVisitor visitor)
{
return visitor.VisitArrayType(this);
}
public override IType VisitChildren(TypeVisitor visitor)
{
IType e = elementType.AcceptVisitor(visitor);
if (e == elementType)
return this;
else
return new ArrayType(compilation, e, dimensions);
}
}
[Serializable]
public sealed class ArrayTypeReference : ITypeReference, ISupportsInterning
{
readonly ITypeReference elementType;
readonly int dimensions;
public ArrayTypeReference(ITypeReference elementType, int dimensions = 1)
{
if (elementType == null)
throw new ArgumentNullException("elementType");
if (dimensions <= 0)
throw new ArgumentOutOfRangeException("dimensions", dimensions, "dimensions must be positive");
this.elementType = elementType;
this.dimensions = dimensions;
}
public ITypeReference ElementType {
get { return elementType; }
}
public int Dimensions {
get { return dimensions; }
}
public IType Resolve(ITypeResolveContext context)
{
return new ArrayType(context.Compilation, elementType.Resolve(context), dimensions);
}
public override string ToString()
{
return elementType.ToString() + "[" + new string(',', dimensions - 1) + "]";
}
int ISupportsInterning.GetHashCodeForInterning()
{
return elementType.GetHashCode() ^ dimensions;
}
bool ISupportsInterning.EqualsForInterning(ISupportsInterning other)
{
ArrayTypeReference o = other as ArrayTypeReference;
return o != null && elementType == o.elementType && dimensions == o.dimensions;
}
}
}