source: stable/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory-5.5.0/TypeSystem/Implementation/DefaultResolvedField.cs @ 11937

// 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.Semantics;
using ICSharpCode.NRefactory.Utils;

namespace ICSharpCode.NRefactory.TypeSystem.Implementation
{
  public class DefaultResolvedField : AbstractResolvedMember, IField
  {
    volatile ResolveResult constantValue;
    
    public DefaultResolvedField(IUnresolvedField unresolved, ITypeResolveContext parentContext)
      : base(unresolved, parentContext)
    {
    }
    
    public bool IsReadOnly {
      get { return ((IUnresolvedField)unresolved).IsReadOnly; }
    }
    
    public bool IsVolatile {
      get { return ((IUnresolvedField)unresolved).IsVolatile; }
    }
    
    IType IVariable.Type {
      get { return this.ReturnType; }
    }
    
    public bool IsConst {
      get { return ((IUnresolvedField)unresolved).IsConst; }
    }

    public bool IsFixed {
      get { return ((IUnresolvedField)unresolved).IsFixed; }
    }

    public object ConstantValue {
      get {
        ResolveResult rr = this.constantValue;
        if (rr == null) {
          using (var busyLock = BusyManager.Enter(this)) {
            if (!busyLock.Success)
              return null;

            IConstantValue unresolvedCV = ((IUnresolvedField)unresolved).ConstantValue;
            if (unresolvedCV != null)
              rr = unresolvedCV.Resolve(context);
            else
              rr = ErrorResolveResult.UnknownError;
            this.constantValue = rr;
          }
        }
        return rr.ConstantValue;
      }
    }
    
    public override IMember Specialize(TypeParameterSubstitution substitution)
    {
      if (TypeParameterSubstitution.Identity.Equals(substitution))
        return this;
      return new SpecializedField(this, substitution);
    }
    
    IMemberReference IField.ToReference()
    {
      return (IMemberReference)ToReference();
    }
  }
}