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Viewing changes to external/nrefactory/ICSharpCode.NRefactory.CSharp/TypeSystem/ResolvedUsingScope.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.CSharp/TypeSystem/ResolvedUsingScope.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.Concurrent;
 
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using System.Collections.Generic;
 
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using System.Collections.ObjectModel;
 
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using System.Diagnostics;
 
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using ICSharpCode.NRefactory.CSharp.Resolver;
 
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using ICSharpCode.NRefactory.Semantics;
 
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using ICSharpCode.NRefactory.TypeSystem;
 
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using ICSharpCode.NRefactory.Utils;
 
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namespace ICSharpCode.NRefactory.CSharp.TypeSystem
 
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{
 
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        /// <summary>
 
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        /// Resolved version of using scope.
 
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        /// </summary>
 
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        public class ResolvedUsingScope
 
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        {
 
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                readonly CSharpTypeResolveContext parentContext;
 
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                readonly UsingScope usingScope;
 
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                internal readonly ConcurrentDictionary<string, ResolveResult> ResolveCache = new ConcurrentDictionary<string, ResolveResult>();
 
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                internal List<List<IMethod>> AllExtensionMethods;
 
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                public ResolvedUsingScope(CSharpTypeResolveContext context, UsingScope usingScope)
 
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                {
 
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                        if (context == null)
 
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                                throw new ArgumentNullException("context");
 
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                        if (usingScope == null)
 
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                                throw new ArgumentNullException("usingScope");
 
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                        this.parentContext = context;
 
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                        this.usingScope = usingScope;
 
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                        if (usingScope.Parent != null) {
 
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                                if (context.CurrentUsingScope == null)
 
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                                        throw new InvalidOperationException();
 
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                        } else {
 
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                                if (context.CurrentUsingScope != null)
 
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                                        throw new InvalidOperationException();
 
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                        }
 
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                }
 
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                public UsingScope UnresolvedUsingScope {
 
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                        get { return usingScope; }
 
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                }
 
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                INamespace @namespace;
 
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                public INamespace Namespace {
 
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                        get {
 
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                                INamespace result = LazyInit.VolatileRead(ref this.@namespace);
 
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                                if (result != null) {
 
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                                        return result;
 
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                                } else {
 
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                                        if (parentContext.CurrentUsingScope != null) {
 
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                                                result = parentContext.CurrentUsingScope.Namespace.GetChildNamespace(usingScope.ShortNamespaceName);
 
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                                                if (result == null)
 
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                                                        result = new DummyNamespace(parentContext.CurrentUsingScope.Namespace, usingScope.ShortNamespaceName);
 
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                                        } else {
 
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                                                result = parentContext.Compilation.RootNamespace;
 
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                                        }
 
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                                        Debug.Assert(result != null);
 
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                                        return LazyInit.GetOrSet(ref this.@namespace, result);
 
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                                }
 
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                        }
 
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                }
 
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                public ResolvedUsingScope Parent {
 
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                        get { return parentContext.CurrentUsingScope; }
 
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                }
 
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                IList<INamespace> usings;
 
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                public IList<INamespace> Usings {
 
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                        get {
 
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                                var result = LazyInit.VolatileRead(ref this.usings);
 
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                                if (result != null) {
 
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                                        return result;
 
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                                } else {
 
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                                        result = new List<INamespace>();
 
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                                        CSharpResolver resolver = new CSharpResolver(parentContext.WithUsingScope(this));
 
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                                        foreach (var u in usingScope.Usings) {
 
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                                                INamespace ns = u.ResolveNamespace(resolver);
 
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                                                if (ns != null && !result.Contains(ns))
 
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                                                        result.Add(ns);
 
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                                        }
 
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                                        return LazyInit.GetOrSet(ref this.usings, new ReadOnlyCollection<INamespace>(result));
 
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                                }
 
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                        }
 
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                }
 
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                IList<KeyValuePair<string, ResolveResult>> usingAliases;
 
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                public IList<KeyValuePair<string, ResolveResult>> UsingAliases {
 
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                        get {
 
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                                var result = LazyInit.VolatileRead(ref this.usingAliases);
 
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                                if (result != null) {
 
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                                        return result;
 
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                                } else {
 
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                                        CSharpResolver resolver = new CSharpResolver(parentContext.WithUsingScope(this));
 
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                                        result = new KeyValuePair<string, ResolveResult>[usingScope.UsingAliases.Count];
 
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                                        for (int i = 0; i < result.Count; i++) {
 
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                                                var rr = usingScope.UsingAliases[i].Value.Resolve(resolver);
 
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                                                if (rr is TypeResolveResult) {
 
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                                                        rr = new AliasTypeResolveResult (usingScope.UsingAliases[i].Key, (TypeResolveResult)rr);
 
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                                                } else if (rr is NamespaceResolveResult) {
 
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                                                        rr = new AliasNamespaceResolveResult (usingScope.UsingAliases[i].Key, (NamespaceResolveResult)rr);
 
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                                                }
 
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                                                result[i] = new KeyValuePair<string, ResolveResult>(
 
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                                                        usingScope.UsingAliases[i].Key,
 
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                                                        rr
 
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                                                );
 
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                                        }
 
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                                        return LazyInit.GetOrSet(ref this.usingAliases, result);
 
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                                }
 
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                        }
 
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                }
 
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                public IList<string> ExternAliases {
 
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                        get { return usingScope.ExternAliases; }
 
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                }
 
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                /// <summary>
 
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                /// Gets whether this using scope has an alias (either using or extern)
 
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                /// with the specified name.
 
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                /// </summary>
 
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                public bool HasAlias(string identifier)
 
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                {
 
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                        return usingScope.HasAlias(identifier);
 
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                }
 
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                sealed class DummyNamespace : INamespace
 
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                {
 
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                        readonly INamespace parentNamespace;
 
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                        readonly string name;
 
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                        public DummyNamespace(INamespace parentNamespace, string name)
 
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                        {
 
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                                this.parentNamespace = parentNamespace;
 
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                                this.name = name;
 
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                        }
 
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                        public string ExternAlias { get; set; }
 
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                        string INamespace.FullName {
 
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                                get { return NamespaceDeclaration.BuildQualifiedName(parentNamespace.FullName, name); }
 
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                        }
 
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                        string INamespace.Name {
 
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                                get { return name; }
 
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                        }
 
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                        INamespace INamespace.ParentNamespace {
 
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                                get { return parentNamespace; }
 
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                        }
 
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                        IEnumerable<INamespace> INamespace.ChildNamespaces {
 
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                                get { return EmptyList<INamespace>.Instance; }
 
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                        }
 
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                        IEnumerable<ITypeDefinition> INamespace.Types {
 
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                                get { return EmptyList<ITypeDefinition>.Instance; }
 
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                        }
 
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                        IEnumerable<IAssembly> INamespace.ContributingAssemblies {
 
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                                get { return EmptyList<IAssembly>.Instance; }
 
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                        }
 
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                        ICompilation ICompilationProvider.Compilation {
 
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                                get { return parentNamespace.Compilation; }
 
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                        }
 
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                        INamespace INamespace.GetChildNamespace(string name)
 
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                        {
 
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                                return null;
 
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                        }
 
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                        ITypeDefinition INamespace.GetTypeDefinition(string name, int typeParameterCount)
 
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                        {
 
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                                return null;
 
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                        }
 
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                }
 
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        }
 
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}