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Viewing changes to external/nrefactory/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultUnresolvedTypeParameter.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
ImportĀ upstreamĀ versionĀ 4.0.5+dfsg

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external/nrefactory/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultUnresolvedTypeParameter.cs
 
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ļ»æ// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
 
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// 
 
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
 
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// software and associated documentation files (the "Software"), to deal in the Software
 
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// without restriction, including without limitation the rights to use, copy, modify, merge,
 
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
 
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// to whom the Software is furnished to do so, subject to the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be included in all copies or
 
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// substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
 
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 
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// DEALINGS IN THE SOFTWARE.
 
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using System;
 
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using System.Collections.Generic;
 
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using System.Globalization;
 
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using ICSharpCode.NRefactory.Utils;
 
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namespace ICSharpCode.NRefactory.TypeSystem.Implementation
 
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{
 
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        /// <summary>
 
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        /// Default implementation of <see cref="IUnresolvedTypeParameter"/>.
 
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        /// </summary>
 
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        [Serializable]
 
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        public class DefaultUnresolvedTypeParameter : IUnresolvedTypeParameter, IFreezable
 
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        {
 
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                readonly int index;
 
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                IList<IUnresolvedAttribute> attributes;
 
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                IList<ITypeReference> constraints;
 
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                string name;
 
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                DomRegion region;
 
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                EntityType ownerType;
 
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                VarianceModifier variance;
 
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                BitVector16 flags;
 
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                const ushort FlagFrozen                       = 0x0001;
 
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                const ushort FlagReferenceTypeConstraint      = 0x0002;
 
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                const ushort FlagValueTypeConstraint          = 0x0004;
 
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                const ushort FlagDefaultConstructorConstraint = 0x0008;
 
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                public void Freeze()
 
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                {
 
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                        if (!flags[FlagFrozen]) {
 
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                                FreezeInternal();
 
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                                flags[FlagFrozen] = true;
 
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                        }
 
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                }
 
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                protected virtual void FreezeInternal()
 
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                {
 
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                        attributes = FreezableHelper.FreezeListAndElements(attributes);
 
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                }
 
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                public DefaultUnresolvedTypeParameter(EntityType ownerType, int index, string name = null)
 
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                {
 
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                        this.ownerType = ownerType;
 
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                        this.index = index;
 
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                        this.name = name ?? ((ownerType == EntityType.Method ? "!!" : "!") + index.ToString(CultureInfo.InvariantCulture));
 
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                }
 
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                public EntityType OwnerType {
 
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                        get { return ownerType; }
 
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                }
 
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                public int Index {
 
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                        get { return index; }
 
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                }
 
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                public bool IsFrozen {
 
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                        get { return flags[FlagFrozen]; }
 
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                }
 
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                public string Name {
 
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                        get { return name; }
 
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                        set {
 
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                                FreezableHelper.ThrowIfFrozen(this);
 
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                                name = value;
 
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                        }
 
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                }
 
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                string INamedElement.FullName {
 
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                        get { return name; }
 
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                }
 
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                string INamedElement.Namespace {
 
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                        get { return string.Empty; }
 
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                }
 
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                string INamedElement.ReflectionName {
 
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                        get {
 
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                                if (ownerType == EntityType.Method)
 
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                                        return "``" + index.ToString(CultureInfo.InvariantCulture);
 
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                                else
 
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                                        return "`" + index.ToString(CultureInfo.InvariantCulture);
 
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                        }
 
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                }
 
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                public IList<IUnresolvedAttribute> Attributes {
 
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                        get {
 
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                                if (attributes == null)
 
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                                        attributes = new List<IUnresolvedAttribute>();
 
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                                return attributes;
 
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                        }
 
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                }
 
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                public IList<ITypeReference> Constraints {
 
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                        get {
 
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                                if (constraints == null)
 
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                                        constraints = new List<ITypeReference>();
 
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                                return constraints;
 
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                        }
 
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                }
 
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                public VarianceModifier Variance {
 
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                        get { return variance; }
 
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                        set {
 
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                                FreezableHelper.ThrowIfFrozen(this);
 
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                                variance = value;
 
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                        }
 
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                }
 
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                public DomRegion Region {
 
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                        get { return region; }
 
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                        set {
 
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                                FreezableHelper.ThrowIfFrozen(this);
 
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                                region = value;
 
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                        }
 
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                }
 
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                public bool HasDefaultConstructorConstraint {
 
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                        get { return flags[FlagDefaultConstructorConstraint]; }
 
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                        set {
 
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                                FreezableHelper.ThrowIfFrozen(this);
 
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                                flags[FlagDefaultConstructorConstraint] = value;
 
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                        }
 
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                }
 
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                public bool HasReferenceTypeConstraint {
 
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                        get { return flags[FlagReferenceTypeConstraint]; }
 
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                        set {
 
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                                FreezableHelper.ThrowIfFrozen(this);
 
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                                flags[FlagReferenceTypeConstraint] = value;
 
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                        }
 
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                }
 
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                public bool HasValueTypeConstraint {
 
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                        get { return flags[FlagValueTypeConstraint]; }
 
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                        set {
 
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                                FreezableHelper.ThrowIfFrozen(this);
 
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                                flags[FlagValueTypeConstraint] = value;
 
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                        }
 
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                }
 
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                /// <summary>
 
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                /// Uses the specified interning provider to intern
 
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                /// strings and lists in this entity.
 
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                /// This method does not test arbitrary objects to see if they implement ISupportsInterning;
 
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                /// instead we assume that those are interned immediately when they are created (before they are added to this entity).
 
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                /// </summary>
 
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                public virtual void ApplyInterningProvider(InterningProvider provider)
 
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                {
 
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                        if (provider == null)
 
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                                throw new ArgumentNullException("provider");
 
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                        FreezableHelper.ThrowIfFrozen(this);
 
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                        name = provider.Intern(name);
 
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                        attributes = provider.InternList(attributes);
 
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                        constraints = provider.InternList(constraints);
 
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                }
 
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                public virtual ITypeParameter CreateResolvedTypeParameter(ITypeResolveContext context)
 
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                {
 
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                        IEntity owner = null;
 
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                        if (this.OwnerType == EntityType.Method) {
 
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                                owner = context.CurrentMember as IMethod;
 
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                        } else if (this.OwnerType == EntityType.TypeDefinition) {
 
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                                owner = context.CurrentTypeDefinition;
 
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                        }
 
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                        if (owner == null)
 
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                                throw new InvalidOperationException("Could not determine the type parameter's owner.");
 
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                        return new DefaultTypeParameter(
 
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                                owner, index, name, variance,
 
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                                this.Attributes.CreateResolvedAttributes(context), this.Region,
 
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                                this.HasValueTypeConstraint, this.HasReferenceTypeConstraint, this.HasDefaultConstructorConstraint, this.Constraints.Resolve(context)
 
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                        );
 
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                }
 
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        }
 
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}