source: branches/CodeEditor/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory-5.5.0/TypeSystem/AnonymousType.cs @ 11700

// 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 System.Linq;
using ICSharpCode.NRefactory.TypeSystem.Implementation;
using ICSharpCode.NRefactory.Utils;

namespace ICSharpCode.NRefactory.TypeSystem
{
  /// <summary>
  /// Anonymous type.
  /// </summary>
  public class AnonymousType : AbstractType
  {
    ICompilation compilation;
    IUnresolvedProperty[] unresolvedProperties;
    IList<IProperty> resolvedProperties;
    
    public AnonymousType(ICompilation compilation, IList<IUnresolvedProperty> properties)
    {
      if (compilation == null)
        throw new ArgumentNullException("compilation");
      if (properties == null)
        throw new ArgumentNullException("properties");
      this.compilation = compilation;
      this.unresolvedProperties = properties.ToArray();
      var context = new SimpleTypeResolveContext(compilation.MainAssembly);
      this.resolvedProperties = new ProjectedList<ITypeResolveContext, IUnresolvedProperty, IProperty>(context, unresolvedProperties, (c, p) => new AnonymousTypeProperty(p, c, this));
    }
    
    sealed class AnonymousTypeProperty : DefaultResolvedProperty
    {
      readonly AnonymousType declaringType;
      
      public AnonymousTypeProperty(IUnresolvedProperty unresolved, ITypeResolveContext parentContext, AnonymousType declaringType)
        : base(unresolved, parentContext)
      {
        this.declaringType = declaringType;
      }
      
      public override IType DeclaringType {
        get { return declaringType; }
      }
      
      public override bool Equals(object obj)
      {
        AnonymousTypeProperty p = obj as AnonymousTypeProperty;
        return p != null && this.Name == p.Name && declaringType.Equals(p.declaringType);
      }
      
      public override int GetHashCode()
      {
        return declaringType.GetHashCode() ^ unchecked(27 * this.Name.GetHashCode());
      }
      
      protected override IMethod CreateResolvedAccessor(IUnresolvedMethod unresolvedAccessor)
      {
        return new AnonymousTypeAccessor(unresolvedAccessor, context, this);
      }
    }
    
    sealed class AnonymousTypeAccessor : DefaultResolvedMethod
    {
      readonly AnonymousTypeProperty owner;
      
      public AnonymousTypeAccessor(IUnresolvedMethod unresolved, ITypeResolveContext parentContext, AnonymousTypeProperty owner)
        : base(unresolved, parentContext, isExtensionMethod: false)
      {
        this.owner = owner;
      }
      
      public override IMember AccessorOwner {
        get { return owner; }
      }
      
      public override IType DeclaringType {
        get { return owner.DeclaringType; }
      }
      
      public override bool Equals(object obj)
      {
        AnonymousTypeAccessor p = obj as AnonymousTypeAccessor;
        return p != null && this.Name == p.Name && owner.DeclaringType.Equals(p.owner.DeclaringType);
      }
      
      public override int GetHashCode()
      {
        return owner.DeclaringType.GetHashCode() ^ unchecked(27 * this.Name.GetHashCode());
      }
    }
    
    public override ITypeReference ToTypeReference()
    {
      return new AnonymousTypeReference(unresolvedProperties);
    }
    
    public override string Name {
      get { return "Anonymous Type"; }
    }
    
    public override TypeKind Kind {
      get { return TypeKind.Anonymous; }
    }

    public override IEnumerable<IType> DirectBaseTypes {
      get {
        yield return compilation.FindType(KnownTypeCode.Object);
      }
    }
    
    public override bool? IsReferenceType {
      get { return true; }
    }
    
    public IList<IProperty> Properties {
      get { return resolvedProperties; }
    }
    
    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.Object).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.Object).GetMethods(typeArguments, filter, options);
    }
    
    public override IEnumerable<IProperty> GetProperties(Predicate<IUnresolvedProperty> filter = null, GetMemberOptions options = GetMemberOptions.None)
    {
      for (int i = 0; i < unresolvedProperties.Length; i++) {
        if (filter == null || filter(unresolvedProperties[i]))
          yield return resolvedProperties[i];
      }
    }
    
    public override IEnumerable<IMethod> GetAccessors(Predicate<IUnresolvedMethod> filter, GetMemberOptions options)
    {
      for (int i = 0; i < unresolvedProperties.Length; i++) {
        if (unresolvedProperties[i].CanGet) {
          if (filter == null || filter(unresolvedProperties[i].Getter))
            yield return resolvedProperties[i].Getter;
        }
        if (unresolvedProperties[i].CanSet) {
          if (filter == null || filter(unresolvedProperties[i].Setter))
            yield return resolvedProperties[i].Setter;
        }
      }
    }
    
    public override int GetHashCode()
    {
      unchecked {
        int hashCode = resolvedProperties.Count;
        foreach (var p in resolvedProperties) {
          hashCode *= 31;
          hashCode += p.Name.GetHashCode() ^ p.ReturnType.GetHashCode();
        }
        return hashCode;
      }
    }
    
    public override bool Equals(IType other)
    {
      AnonymousType o = other as AnonymousType;
      if (o == null || resolvedProperties.Count != o.resolvedProperties.Count)
        return false;
      for (int i = 0; i < resolvedProperties.Count; i++) {
        IProperty p1 = resolvedProperties[i];
        IProperty p2 = o.resolvedProperties[i];
        if (p1.Name != p2.Name || !p1.ReturnType.Equals(p2.ReturnType))
          return false;
      }
      return true;
    }
  }
  
  /// <summary>
  /// Anonymous type reference.
  /// </summary>
  [Serializable]
  public class AnonymousTypeReference : ITypeReference
  {
    readonly IUnresolvedProperty[] unresolvedProperties;
    
    public AnonymousTypeReference(IUnresolvedProperty[] properties)
    {
      if (properties == null)
        throw new ArgumentNullException("properties");
      this.unresolvedProperties = properties;
    }
    
    public IType Resolve(ITypeResolveContext context)
    {
      return new AnonymousType(context.Compilation, unresolvedProperties);
    }
  }
}