source: branches/2521_ProblemRefactoring/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory.CSharp-5.5.0/Completion/CompletionDataWrapper.cs

// 
// CompletionDataWrapper.cs
//  
// Author:
//       Mike Krüger <mkrueger@xamarin.com>
// 
// Copyright (c) 2011 Xamarin Inc. (http://xamarin.com)
// 
// 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.Completion;
using ICSharpCode.NRefactory.TypeSystem;
using System.Linq;
using ICSharpCode.NRefactory.CSharp.Resolver;

namespace ICSharpCode.NRefactory.CSharp.Completion
{
  public class CompletionDataWrapper
  {
    CSharpCompletionEngine completion;
    List<ICompletionData> result = new List<ICompletionData> ();
    
    public List<ICompletionData> Result {
      get {
        return result;
      }
    }
    
    ICompletionDataFactory Factory {
      get {
        return completion.factory;
      }
    }

    internal bool AnonymousDelegateAdded {
      get;
      set;
    }
    
    public CompletionDataWrapper (CSharpCompletionEngine completion)
    {
      this.completion = completion;
    }
    
    public void Add (ICompletionData data)
    {
      result.Add (data);
    }


    public ICompletionData AddCustom (string displayText, string description = null, string completionText = null)
    {
      var literalCompletionData = Factory.CreateLiteralCompletionData(displayText, description, completionText);
      result.Add(literalCompletionData);
      return literalCompletionData;
    }
    
    HashSet<string> usedNamespaces = new HashSet<string> ();

    bool IsAccessible(MemberLookup lookup, INamespace ns)
    {
      if (ns.Types.Any (t => lookup.IsAccessible (t, false)))
        return true;
      foreach (var child in ns.ChildNamespaces)
        if (IsAccessible (lookup, child))
          return true;
      return false;
    }
    
    public void AddNamespace (MemberLookup lookup, INamespace ns)
    {
      if (usedNamespaces.Contains (ns.Name))
        return;
      if (!IsAccessible (lookup, ns)) {
        usedNamespaces.Add (ns.Name);
        return;
      }
      usedNamespaces.Add (ns.Name);
      result.Add (Factory.CreateNamespaceCompletionData (ns));
    }

    public void AddAlias(string alias)
    {
      result.Add (Factory.CreateLiteralCompletionData (alias));
    }

    Dictionary<string, ICompletionData> typeDisplayText = new Dictionary<string, ICompletionData> ();
    Dictionary<IType, ICompletionData> addedTypes = new Dictionary<IType, ICompletionData> ();

    public ICompletionData AddConstructors(IType type, bool showFullName, bool isInAttributeContext = false)
    {
      return InternalAddType(type, showFullName, isInAttributeContext, true);
    }

    public ICompletionData AddType(IType type, bool showFullName, bool isInAttributeContext = false)
    {
      return InternalAddType(type, showFullName, isInAttributeContext, false);
    }

    ICompletionData InternalAddType(IType type, bool showFullName, bool isInAttributeContext, bool addConstrurs)
    {
      if (type == null)
        throw new ArgumentNullException("type");
      if (type.Name == "Void" && type.Namespace == "System" || type.Kind == TypeKind.Unknown)
        return null;
      if (addedTypes.ContainsKey (type))
        return addedTypes[type];
      usedNamespaces.Add(type.Name);
      var def = type.GetDefinition();
      if (def != null && def.ParentAssembly != completion.ctx.CurrentAssembly) {
        switch (completion.EditorBrowsableBehavior) {
          case EditorBrowsableBehavior.Ignore:
            break;
          case EditorBrowsableBehavior.Normal:
            var state = def.GetEditorBrowsableState();
            if (state != System.ComponentModel.EditorBrowsableState.Always)
              return null;
            break;
          case EditorBrowsableBehavior.IncludeAdvanced:
            if (!def.IsBrowsable())
              return null;
            break;
          default:
            throw new ArgumentOutOfRangeException();
        }
      }
      ICompletionData usedType;
      var data = Factory.CreateTypeCompletionData(type, showFullName, isInAttributeContext, addConstrurs);
      var text = data.DisplayText;
      if (typeDisplayText.TryGetValue(text, out usedType)) {
        usedType.AddOverload(data);
        return usedType;
      } 
      typeDisplayText [text] = data;
      result.Add(data);
      addedTypes[type] = data;
      return data;
    }

    Dictionary<string, List<ICompletionData>> data = new Dictionary<string, List<ICompletionData>> ();
    
    public ICompletionData AddVariable(IVariable variable)
    {
      if (data.ContainsKey(variable.Name))
        return null;
      data [variable.Name] = new List<ICompletionData>();
      var cd = Factory.CreateVariableCompletionData(variable);
      result.Add(cd);
      return cd;
    }
    
    public ICompletionData AddNamedParameterVariable(IVariable variable)
    {
      var name = variable.Name + ":";
      if (data.ContainsKey(name))
        return null;
      data [name] = new List<ICompletionData>();
      
      var cd = Factory.CreateVariableCompletionData(variable);
      cd.CompletionText += ":";
      cd.DisplayText += ":";
      result.Add(cd);
      return cd;
    }
    
    public void AddTypeParameter (ITypeParameter variable)
    {
      if (data.ContainsKey (variable.Name))
        return;
      data [variable.Name] = new List<ICompletionData> ();
      result.Add (Factory.CreateVariableCompletionData (variable));
    }

    public void AddTypeImport(ITypeDefinition type, bool useFullName, bool addForTypeCreation)
    {
      result.Add(Factory.CreateImportCompletionData(type, useFullName, addForTypeCreation));
    }

    public ICompletionData AddMember (IMember member)
    {
      var newData = Factory.CreateEntityCompletionData (member);
      
      if (member.ParentAssembly != completion.ctx.CurrentAssembly) {
        switch (completion.EditorBrowsableBehavior) {
          case EditorBrowsableBehavior.Ignore:
            break;
          case EditorBrowsableBehavior.Normal:
            var state = member.GetEditorBrowsableState();
            if (state != System.ComponentModel.EditorBrowsableState.Always)
              return null;
            break;
          case EditorBrowsableBehavior.IncludeAdvanced:
            if (!member.IsBrowsable())
              return null;
            break;
          default:
            throw new ArgumentOutOfRangeException();
        }
      }
      string memberKey = newData.DisplayText;
      if (memberKey == null)
        return null;

      newData.CompletionCategory = GetCompletionCategory (member.DeclaringTypeDefinition);

      List<ICompletionData> existingData;
      data.TryGetValue (memberKey, out existingData);
      if (existingData != null) {
        if (member.SymbolKind == SymbolKind.Field || member.SymbolKind == SymbolKind.Property || member.SymbolKind == SymbolKind.Event)
          return null;
        var a = member as IEntity;
        foreach (var d in existingData) {
          if (!(d is IEntityCompletionData))
            continue;
          var b = ((IEntityCompletionData)d).Entity;
          if (a == null || b == null || a.SymbolKind == b.SymbolKind) {
            d.AddOverload (newData);
            return d;
          } 
        }
        if (newData != null) {
          result.Add (newData);
          data [memberKey].Add (newData);
        }
      } else {
        result.Add (newData);
        data [memberKey] = new List<ICompletionData> ();
        data [memberKey].Add (newData);
      }
      return newData;
    }
    
    internal CompletionCategory GetCompletionCategory (IType type)
    {
      if (type == null)
        return null;
      if (!completionCategories.ContainsKey (type))
        completionCategories [type] = new TypeCompletionCategory (type);
      return completionCategories [type];
    }
    
    Dictionary<IType, CompletionCategory> completionCategories = new Dictionary<IType, CompletionCategory> ();
    class TypeCompletionCategory : CompletionCategory
    {
      public IType Type {
        get;
        private set;
      }
      
      public TypeCompletionCategory (IType type) : base (type.FullName, null)
      {
        this.Type = type;
      }
      
      public override int CompareTo (CompletionCategory other)
      {
        var compareCategory = other as TypeCompletionCategory;
        if (compareCategory == null)
          return -1;
        int result;
        if (Type.ReflectionName == compareCategory.Type.ReflectionName) {
          result = 0;
        } else if (Type.GetAllBaseTypes().Any(t => t.ReflectionName == compareCategory.Type.ReflectionName)) {
          result = -1;
        } else if (compareCategory.Type.GetAllBaseTypes().Any(t => t.ReflectionName == Type.ReflectionName)) {
          result = 1;
        } else {
          var d = Type.GetDefinition ();
          var ct = compareCategory.Type.GetDefinition();
          if (ct.IsStatic && d.IsStatic) {
            result = d.FullName.CompareTo (ct.FullName);
          } else if (d.IsStatic) {
            result = 1;
          }else if (ct.IsStatic) {
            result = -1;
          } else {
            result = 0;
          }
        }
        return result;
      }
    }
    HashSet<IType> addedEnums = new HashSet<IType> ();
    public ICompletionData AddEnumMembers (IType resolvedType, CSharpResolver state)
    {
      if (addedEnums.Contains (resolvedType))
        return null;
      addedEnums.Add (resolvedType);
      var result = AddType(resolvedType, true);
      foreach (var field in resolvedType.GetFields ()) {
        if (field.IsPublic && (field.IsConst || field.IsStatic)) {
          Result.Add(Factory.CreateMemberCompletionData(resolvedType, field));
        }
      }
      return result;
    }
    HashSet<string> anonymousSignatures = new HashSet<string> ();

    public bool HasAnonymousDelegateAdded(string signature)
    {
      return anonymousSignatures.Contains(signature); 
    }

    public void AddAnonymousDelegateAdded(string signature)
    {
      anonymousSignatures.Add(signature); 
    }
  }
}