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source: stable/HeuristicLab.ExtLibs/HeuristicLab.NRefactory/5.5.0/NRefactory.CSharp-5.5.0/OutputVisitor/CSharpAmbience.cs @ 14710

Last change on this file since 14710 was 11700, checked in by jkarder, 10 years ago

#2077: created branch and added first version
File size: 12.1 KB
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1// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
2//
3// Permission is hereby granted, free of charge, to any person obtaining a copy of this
4// software and associated documentation files (the "Software"), to deal in the Software
5// without restriction, including without limitation the rights to use, copy, modify, merge,
6// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
7// to whom the Software is furnished to do so, subject to the following conditions:
8//
9// The above copyright notice and this permission notice shall be included in all copies or
10// substantial portions of the Software.
11//
12// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
13// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
14// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
15// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
16// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
17// DEALINGS IN THE SOFTWARE.
18
19using System;
20using System.IO;
21using ICSharpCode.NRefactory.CSharp.Refactoring;
22using ICSharpCode.NRefactory.TypeSystem;
23
24namespace ICSharpCode.NRefactory.CSharp
25{
26  /// <summary>
27  /// C# ambience. Used to convert type system symbols to text (usually for displaying the symbol to the user; e.g. in editor tooltips)
28  /// </summary>
29  public class CSharpAmbience : IAmbience
30  {
31    public ConversionFlags ConversionFlags { get; set; }
32   
33    #region ConvertSymbol
34    [Obsolete("Use ConvertSymbol() instead")]
35    public string ConvertEntity(IEntity entity)
36    {
37      return ConvertSymbol(entity);
38    }
39   
40    public string ConvertSymbol(ISymbol symbol)
41    {
42      if (symbol == null)
43        throw new ArgumentNullException("symbol");
44     
45      StringWriter writer = new StringWriter();
46      ConvertSymbol(symbol, new TextWriterTokenWriter(writer), FormattingOptionsFactory.CreateMono ());
47      return writer.ToString();
48    }
49   
50    [Obsolete("Use ConvertSymbol() instead")]
51    public void ConvertEntity(IEntity entity, TokenWriter writer, CSharpFormattingOptions formattingPolicy)
52    {
53      ConvertSymbol(entity, writer, formattingPolicy);
54    }
55   
56    public void ConvertSymbol(ISymbol symbol, TokenWriter writer, CSharpFormattingOptions formattingPolicy)
57    {
58      if (symbol == null)
59        throw new ArgumentNullException("symbol");
60      if (writer == null)
61        throw new ArgumentNullException("writer");
62      if (formattingPolicy == null)
63        throw new ArgumentNullException("formattingPolicy");
64     
65      TypeSystemAstBuilder astBuilder = CreateAstBuilder();
66      AstNode node = astBuilder.ConvertSymbol(symbol);
67      EntityDeclaration entityDecl = node as EntityDeclaration;
68      if (entityDecl != null)
69        PrintModifiers(entityDecl.Modifiers, writer);
70     
71      if ((ConversionFlags & ConversionFlags.ShowDefinitionKeyword) == ConversionFlags.ShowDefinitionKeyword) {
72        if (node is TypeDeclaration) {
73          switch (((TypeDeclaration)node).ClassType) {
74            case ClassType.Class:
75              writer.WriteKeyword(Roles.ClassKeyword, "class");
76              break;
77            case ClassType.Struct:
78              writer.WriteKeyword(Roles.StructKeyword, "struct");
79              break;
80            case ClassType.Interface:
81              writer.WriteKeyword(Roles.InterfaceKeyword, "interface");
82              break;
83            case ClassType.Enum:
84              writer.WriteKeyword(Roles.EnumKeyword, "enum");
85              break;
86            default:
87              throw new Exception("Invalid value for ClassType");
88          }
89          writer.Space();
90        } else if (node is DelegateDeclaration) {
91          writer.WriteKeyword(Roles.DelegateKeyword, "delegate");
92          writer.Space();
93        } else if (node is EventDeclaration) {
94          writer.WriteKeyword(EventDeclaration.EventKeywordRole, "event");
95          writer.Space();
96        } else if (node is NamespaceDeclaration) {
97          writer.WriteKeyword(Roles.NamespaceKeyword, "namespace");
98          writer.Space();
99        }
100      }
101     
102      if ((ConversionFlags & ConversionFlags.ShowReturnType) == ConversionFlags.ShowReturnType) {
103        var rt = node.GetChildByRole(Roles.Type);
104        if (!rt.IsNull) {
105          rt.AcceptVisitor(new CSharpOutputVisitor(writer, formattingPolicy));
106          writer.Space();
107        }
108      }
109     
110      if (symbol is ITypeDefinition)
111        WriteTypeDeclarationName((ITypeDefinition)symbol, writer, formattingPolicy);
112      else if (symbol is IMember)
113        WriteMemberDeclarationName((IMember)symbol, writer, formattingPolicy);
114      else
115        writer.WriteIdentifier(Identifier.Create(symbol.Name));
116     
117      if ((ConversionFlags & ConversionFlags.ShowParameterList) == ConversionFlags.ShowParameterList && HasParameters(symbol)) {
118        writer.WriteToken(symbol.SymbolKind == SymbolKind.Indexer ? Roles.LBracket : Roles.LPar, symbol.SymbolKind == SymbolKind.Indexer ? "[" : "(");
119        bool first = true;
120        foreach (var param in node.GetChildrenByRole(Roles.Parameter)) {
121          if (first) {
122            first = false;
123          } else {
124            writer.WriteToken(Roles.Comma, ",");
125            writer.Space();
126          }
127          param.AcceptVisitor(new CSharpOutputVisitor(writer, formattingPolicy));
128        }
129        writer.WriteToken(symbol.SymbolKind == SymbolKind.Indexer ? Roles.RBracket : Roles.RPar, symbol.SymbolKind == SymbolKind.Indexer ? "]" : ")");
130      }
131     
132      if ((ConversionFlags & ConversionFlags.ShowBody) == ConversionFlags.ShowBody && !(node is TypeDeclaration)) {
133        IProperty property = symbol as IProperty;
134        if (property != null) {
135          writer.Space();
136          writer.WriteToken(Roles.LBrace, "{");
137          writer.Space();
138          if (property.CanGet) {
139            writer.WriteKeyword(PropertyDeclaration.GetKeywordRole, "get");
140            writer.WriteToken(Roles.Semicolon, ";");
141            writer.Space();
142          }
143          if (property.CanSet) {
144            writer.WriteKeyword(PropertyDeclaration.SetKeywordRole, "set");
145            writer.WriteToken(Roles.Semicolon, ";");
146            writer.Space();
147          }
148          writer.WriteToken(Roles.RBrace, "}");
149        } else {
150          writer.WriteToken(Roles.Semicolon, ";");
151        }
152      }
153    }
154   
155    static bool HasParameters(ISymbol e)
156    {
157      switch (e.SymbolKind) {
158        case SymbolKind.TypeDefinition:
159          return ((ITypeDefinition)e).Kind == TypeKind.Delegate;
160        case SymbolKind.Indexer:
161        case SymbolKind.Method:
162        case SymbolKind.Operator:
163        case SymbolKind.Constructor:
164        case SymbolKind.Destructor:
165          return true;
166        default:
167          return false;
168      }
169    }
170   
171    TypeSystemAstBuilder CreateAstBuilder()
172    {
173      TypeSystemAstBuilder astBuilder = new TypeSystemAstBuilder();
174      astBuilder.AddAnnotations = true;
175      astBuilder.ShowModifiers = (ConversionFlags & ConversionFlags.ShowModifiers) == ConversionFlags.ShowModifiers;
176      astBuilder.ShowAccessibility = (ConversionFlags & ConversionFlags.ShowAccessibility) == ConversionFlags.ShowAccessibility;
177      astBuilder.AlwaysUseShortTypeNames = (ConversionFlags & ConversionFlags.UseFullyQualifiedTypeNames) != ConversionFlags.UseFullyQualifiedTypeNames;
178      astBuilder.ShowParameterNames = (ConversionFlags & ConversionFlags.ShowParameterNames) == ConversionFlags.ShowParameterNames;
179      return astBuilder;
180    }
181   
182    void WriteTypeDeclarationName(ITypeDefinition typeDef, TokenWriter writer, CSharpFormattingOptions formattingPolicy)
183    {
184      TypeSystemAstBuilder astBuilder = CreateAstBuilder();
185      EntityDeclaration node = astBuilder.ConvertEntity(typeDef);
186      if (typeDef.DeclaringTypeDefinition != null) {
187        WriteTypeDeclarationName(typeDef.DeclaringTypeDefinition, writer, formattingPolicy);
188        writer.WriteToken(Roles.Dot, ".");
189      } else if ((ConversionFlags & ConversionFlags.UseFullyQualifiedEntityNames) == ConversionFlags.UseFullyQualifiedEntityNames) {
190        if (!string.IsNullOrEmpty(typeDef.Namespace)) {
191          WriteQualifiedName(typeDef.Namespace, writer, formattingPolicy);
192          writer.WriteToken(Roles.Dot, ".");
193        }
194      }
195      writer.WriteIdentifier(node.NameToken);
196      if ((ConversionFlags & ConversionFlags.ShowTypeParameterList) == ConversionFlags.ShowTypeParameterList) {
197        var outputVisitor = new CSharpOutputVisitor(writer, formattingPolicy);
198        outputVisitor.WriteTypeParameters(node.GetChildrenByRole(Roles.TypeParameter));
199      }
200    }
201   
202    void WriteMemberDeclarationName(IMember member, TokenWriter writer, CSharpFormattingOptions formattingPolicy)
203    {
204      TypeSystemAstBuilder astBuilder = CreateAstBuilder();
205      EntityDeclaration node = astBuilder.ConvertEntity(member);
206      if ((ConversionFlags & ConversionFlags.ShowDeclaringType) == ConversionFlags.ShowDeclaringType) {
207        ConvertType(member.DeclaringType, writer, formattingPolicy);
208        writer.WriteToken(Roles.Dot, ".");
209      }
210      switch (member.SymbolKind) {
211        case SymbolKind.Indexer:
212          writer.WriteKeyword(Roles.Identifier, "this");
213          break;
214        case SymbolKind.Constructor:
215          WriteQualifiedName(member.DeclaringType.Name, writer, formattingPolicy);
216          break;
217        case SymbolKind.Destructor:
218          writer.WriteToken(DestructorDeclaration.TildeRole, "~");
219          WriteQualifiedName(member.DeclaringType.Name, writer, formattingPolicy);
220          break;
221        case SymbolKind.Operator:
222          switch (member.Name) {
223            case "op_Implicit":
224              writer.WriteKeyword(OperatorDeclaration.ImplicitRole, "implicit");
225              writer.Space();
226              writer.WriteKeyword(OperatorDeclaration.OperatorKeywordRole, "operator");
227              writer.Space();
228              ConvertType(member.ReturnType, writer, formattingPolicy);
229              break;
230            case "op_Explicit":
231              writer.WriteKeyword(OperatorDeclaration.ExplicitRole, "explicit");
232              writer.Space();
233              writer.WriteKeyword(OperatorDeclaration.OperatorKeywordRole, "operator");
234              writer.Space();
235              ConvertType(member.ReturnType, writer, formattingPolicy);
236              break;
237            default:
238              writer.WriteKeyword(OperatorDeclaration.OperatorKeywordRole, "operator");
239              writer.Space();
240              var operatorType = OperatorDeclaration.GetOperatorType(member.Name);
241              if (operatorType.HasValue)
242                writer.WriteToken(OperatorDeclaration.GetRole(operatorType.Value), OperatorDeclaration.GetToken(operatorType.Value));
243              else
244                writer.WriteIdentifier(node.NameToken);
245              break;
246          }
247          break;
248        default:
249          writer.WriteIdentifier(Identifier.Create(member.Name));
250          break;
251      }
252      if ((ConversionFlags & ConversionFlags.ShowTypeParameterList) == ConversionFlags.ShowTypeParameterList && member.SymbolKind == SymbolKind.Method) {
253        var outputVisitor = new CSharpOutputVisitor(writer, formattingPolicy);
254        outputVisitor.WriteTypeParameters(node.GetChildrenByRole(Roles.TypeParameter));
255      }
256    }
257   
258    void PrintModifiers(Modifiers modifiers, TokenWriter writer)
259    {
260      foreach (var m in CSharpModifierToken.AllModifiers) {
261        if ((modifiers & m) == m) {
262          writer.WriteKeyword(EntityDeclaration.ModifierRole, CSharpModifierToken.GetModifierName(m));
263          writer.Space();
264        }
265      }
266    }
267   
268    void WriteQualifiedName(string name, TokenWriter writer, CSharpFormattingOptions formattingPolicy)
269    {
270      var node = AstType.Create(name);
271      var outputVisitor = new CSharpOutputVisitor(writer, formattingPolicy);
272      node.AcceptVisitor(outputVisitor);
273    }
274    #endregion
275   
276    public string ConvertVariable(IVariable v)
277    {
278      TypeSystemAstBuilder astBuilder = CreateAstBuilder();
279      AstNode astNode = astBuilder.ConvertVariable(v);
280      return astNode.ToString().TrimEnd(';', '\r', '\n', (char)8232);
281    }
282   
283    public string ConvertType(IType type)
284    {
285      if (type == null)
286        throw new ArgumentNullException("type");
287     
288      TypeSystemAstBuilder astBuilder = CreateAstBuilder();
289      astBuilder.AlwaysUseShortTypeNames = (ConversionFlags & ConversionFlags.UseFullyQualifiedEntityNames) != ConversionFlags.UseFullyQualifiedEntityNames;
290      AstType astType = astBuilder.ConvertType(type);
291      return astType.ToString();
292    }
293   
294    public void ConvertType(IType type, TokenWriter writer, CSharpFormattingOptions formattingPolicy)
295    {
296      TypeSystemAstBuilder astBuilder = CreateAstBuilder();
297      astBuilder.AlwaysUseShortTypeNames = (ConversionFlags & ConversionFlags.UseFullyQualifiedEntityNames) != ConversionFlags.UseFullyQualifiedEntityNames;
298      AstType astType = astBuilder.ConvertType(type);
299      astType.AcceptVisitor(new CSharpOutputVisitor(writer, formattingPolicy));
300    }
301   
302    public string ConvertConstantValue(object constantValue)
303    {
304      return TextWriterTokenWriter.PrintPrimitiveValue(constantValue);
305    }
306   
307    public string WrapComment(string comment)
308    {
309      return "// " + comment;
310    }
311  }
312}
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