[11700] | 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 | |
---|
| 19 | using System; |
---|
| 20 | using System.Collections.Generic; |
---|
| 21 | using ICSharpCode.NRefactory.CSharp.Resolver; |
---|
| 22 | using ICSharpCode.NRefactory.TypeSystem; |
---|
| 23 | |
---|
| 24 | namespace ICSharpCode.NRefactory.CSharp |
---|
| 25 | { |
---|
| 26 | /// <summary> |
---|
| 27 | /// A type reference in the C# AST. |
---|
| 28 | /// </summary> |
---|
| 29 | public abstract class AstType : AstNode |
---|
| 30 | { |
---|
| 31 | #region Null |
---|
| 32 | public new static readonly AstType Null = new NullAstType (); |
---|
| 33 | |
---|
| 34 | sealed class NullAstType : AstType |
---|
| 35 | { |
---|
| 36 | public override bool IsNull { |
---|
| 37 | get { |
---|
| 38 | return true; |
---|
| 39 | } |
---|
| 40 | } |
---|
| 41 | |
---|
| 42 | public override void AcceptVisitor (IAstVisitor visitor) |
---|
| 43 | { |
---|
| 44 | visitor.VisitNullNode(this); |
---|
| 45 | } |
---|
| 46 | |
---|
| 47 | public override T AcceptVisitor<T> (IAstVisitor<T> visitor) |
---|
| 48 | { |
---|
| 49 | return visitor.VisitNullNode(this); |
---|
| 50 | } |
---|
| 51 | |
---|
| 52 | public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data) |
---|
| 53 | { |
---|
| 54 | return visitor.VisitNullNode(this, data); |
---|
| 55 | } |
---|
| 56 | |
---|
| 57 | protected internal override bool DoMatch(AstNode other, PatternMatching.Match match) |
---|
| 58 | { |
---|
| 59 | return other == null || other.IsNull; |
---|
| 60 | } |
---|
| 61 | |
---|
| 62 | public override ITypeReference ToTypeReference(NameLookupMode lookupMode, InterningProvider interningProvider) |
---|
| 63 | { |
---|
| 64 | return SpecialType.UnknownType; |
---|
| 65 | } |
---|
| 66 | } |
---|
| 67 | #endregion |
---|
| 68 | |
---|
| 69 | #region PatternPlaceholder |
---|
| 70 | public static implicit operator AstType(PatternMatching.Pattern pattern) |
---|
| 71 | { |
---|
| 72 | return pattern != null ? new PatternPlaceholder(pattern) : null; |
---|
| 73 | } |
---|
| 74 | |
---|
| 75 | sealed class PatternPlaceholder : AstType, PatternMatching.INode |
---|
| 76 | { |
---|
| 77 | readonly PatternMatching.Pattern child; |
---|
| 78 | |
---|
| 79 | public PatternPlaceholder(PatternMatching.Pattern child) |
---|
| 80 | { |
---|
| 81 | this.child = child; |
---|
| 82 | } |
---|
| 83 | |
---|
| 84 | public override NodeType NodeType { |
---|
| 85 | get { return NodeType.Pattern; } |
---|
| 86 | } |
---|
| 87 | |
---|
| 88 | public override void AcceptVisitor (IAstVisitor visitor) |
---|
| 89 | { |
---|
| 90 | visitor.VisitPatternPlaceholder (this, child); |
---|
| 91 | } |
---|
| 92 | |
---|
| 93 | public override T AcceptVisitor<T> (IAstVisitor<T> visitor) |
---|
| 94 | { |
---|
| 95 | return visitor.VisitPatternPlaceholder (this, child); |
---|
| 96 | } |
---|
| 97 | |
---|
| 98 | public override S AcceptVisitor<T, S>(IAstVisitor<T, S> visitor, T data) |
---|
| 99 | { |
---|
| 100 | return visitor.VisitPatternPlaceholder (this, child, data); |
---|
| 101 | } |
---|
| 102 | |
---|
| 103 | public override ITypeReference ToTypeReference(NameLookupMode lookupMode, InterningProvider interningProvider) |
---|
| 104 | { |
---|
| 105 | throw new NotSupportedException(); |
---|
| 106 | } |
---|
| 107 | |
---|
| 108 | protected internal override bool DoMatch(AstNode other, PatternMatching.Match match) |
---|
| 109 | { |
---|
| 110 | return child.DoMatch(other, match); |
---|
| 111 | } |
---|
| 112 | |
---|
| 113 | bool PatternMatching.INode.DoMatchCollection(Role role, PatternMatching.INode pos, PatternMatching.Match match, PatternMatching.BacktrackingInfo backtrackingInfo) |
---|
| 114 | { |
---|
| 115 | return child.DoMatchCollection(role, pos, match, backtrackingInfo); |
---|
| 116 | } |
---|
| 117 | } |
---|
| 118 | #endregion |
---|
| 119 | |
---|
| 120 | public override NodeType NodeType { |
---|
| 121 | get { return NodeType.TypeReference; } |
---|
| 122 | } |
---|
| 123 | |
---|
| 124 | public new AstType Clone() |
---|
| 125 | { |
---|
| 126 | return (AstType)base.Clone(); |
---|
| 127 | } |
---|
| 128 | |
---|
| 129 | /// <summary> |
---|
| 130 | /// Gets whether this type is a SimpleType "var". |
---|
| 131 | /// </summary> |
---|
| 132 | public bool IsVar() |
---|
| 133 | { |
---|
| 134 | SimpleType st = this as SimpleType; |
---|
| 135 | return st != null && st.Identifier == "var" && st.TypeArguments.Count == 0; |
---|
| 136 | } |
---|
| 137 | |
---|
| 138 | /// <summary> |
---|
| 139 | /// Create an ITypeReference for this AstType. |
---|
| 140 | /// Uses the context (ancestors of this node) to determine the correct <see cref="NameLookupMode"/>. |
---|
| 141 | /// </summary> |
---|
| 142 | /// <remarks> |
---|
| 143 | /// The resulting type reference will read the context information from the |
---|
| 144 | /// <see cref="ITypeResolveContext"/>: |
---|
| 145 | /// For resolving type parameters, the CurrentTypeDefinition/CurrentMember is used. |
---|
| 146 | /// For resolving simple names, the current namespace and usings from the CurrentUsingScope |
---|
| 147 | /// (on CSharpTypeResolveContext only) is used. |
---|
| 148 | /// </remarks> |
---|
| 149 | public ITypeReference ToTypeReference(InterningProvider interningProvider = null) |
---|
| 150 | { |
---|
| 151 | return ToTypeReference(GetNameLookupMode(), interningProvider); |
---|
| 152 | } |
---|
| 153 | |
---|
| 154 | /// <summary> |
---|
| 155 | /// Create an ITypeReference for this AstType. |
---|
| 156 | /// </summary> |
---|
| 157 | /// <remarks> |
---|
| 158 | /// The resulting type reference will read the context information from the |
---|
| 159 | /// <see cref="ITypeResolveContext"/>: |
---|
| 160 | /// For resolving type parameters, the CurrentTypeDefinition/CurrentMember is used. |
---|
| 161 | /// For resolving simple names, the current namespace and usings from the CurrentUsingScope |
---|
| 162 | /// (on CSharpTypeResolveContext only) is used. |
---|
| 163 | /// </remarks> |
---|
| 164 | public abstract ITypeReference ToTypeReference(NameLookupMode lookupMode, InterningProvider interningProvider = null); |
---|
| 165 | |
---|
| 166 | /// <summary> |
---|
| 167 | /// Gets the name lookup mode from the context (looking at the ancestors of this <see cref="AstType"/>). |
---|
| 168 | /// </summary> |
---|
| 169 | public NameLookupMode GetNameLookupMode() |
---|
| 170 | { |
---|
| 171 | AstType outermostType = this; |
---|
| 172 | while (outermostType.Parent is AstType) |
---|
| 173 | outermostType = (AstType)outermostType.Parent; |
---|
| 174 | |
---|
| 175 | if (outermostType.Parent is UsingDeclaration || outermostType.Parent is UsingAliasDeclaration) { |
---|
| 176 | return NameLookupMode.TypeInUsingDeclaration; |
---|
| 177 | } else if (outermostType.Role == Roles.BaseType) { |
---|
| 178 | // Use BaseTypeReference for a type's base type, and for a constraint on a type. |
---|
| 179 | // Do not use it for a constraint on a method. |
---|
| 180 | if (outermostType.Parent is TypeDeclaration || (outermostType.Parent is Constraint && outermostType.Parent.Parent is TypeDeclaration)) |
---|
| 181 | return NameLookupMode.BaseTypeReference; |
---|
| 182 | } |
---|
| 183 | return NameLookupMode.Type; |
---|
| 184 | } |
---|
| 185 | |
---|
| 186 | /// <summary> |
---|
| 187 | /// Creates a pointer type from this type by nesting it in a <see cref="ComposedType"/>. |
---|
| 188 | /// If this type already is a pointer type, this method just increases the PointerRank of the existing pointer type. |
---|
| 189 | /// </summary> |
---|
| 190 | public virtual AstType MakePointerType() |
---|
| 191 | { |
---|
| 192 | return new ComposedType { BaseType = this }.MakePointerType(); |
---|
| 193 | } |
---|
| 194 | |
---|
| 195 | /// <summary> |
---|
| 196 | /// Creates an array type from this type by nesting it in a <see cref="ComposedType"/>. |
---|
| 197 | /// If this type already is an array type, the additional rank is prepended to the existing array specifier list. |
---|
| 198 | /// Thus, <c>new SimpleType("T").MakeArrayType(1).MakeArrayType(2)</c> will result in "T[,][]". |
---|
| 199 | /// </summary> |
---|
| 200 | public virtual AstType MakeArrayType(int rank = 1) |
---|
| 201 | { |
---|
| 202 | return new ComposedType { BaseType = this }.MakeArrayType(rank); |
---|
| 203 | } |
---|
| 204 | |
---|
| 205 | /// <summary> |
---|
| 206 | /// Creates a nullable type from this type by nesting it in a <see cref="ComposedType"/>. |
---|
| 207 | /// </summary> |
---|
| 208 | public AstType MakeNullableType() |
---|
| 209 | { |
---|
| 210 | return new ComposedType { BaseType = this, HasNullableSpecifier = true }; |
---|
| 211 | } |
---|
| 212 | |
---|
| 213 | /// <summary> |
---|
| 214 | /// Builds an expression that can be used to access a static member on this type. |
---|
| 215 | /// </summary> |
---|
| 216 | public MemberReferenceExpression Member(string memberName) |
---|
| 217 | { |
---|
| 218 | return new TypeReferenceExpression { Type = this }.Member(memberName); |
---|
| 219 | } |
---|
| 220 | |
---|
| 221 | /// <summary> |
---|
| 222 | /// Builds an expression that can be used to access a static member on this type. |
---|
| 223 | /// </summary> |
---|
| 224 | public MemberType MemberType(string memberName, params AstType[] typeArguments) |
---|
| 225 | { |
---|
| 226 | var memberType = new MemberType(this, memberName); |
---|
| 227 | memberType.TypeArguments.AddRange(typeArguments); |
---|
| 228 | return memberType; |
---|
| 229 | } |
---|
| 230 | |
---|
| 231 | /// <summary> |
---|
| 232 | /// Builds an expression that can be used to access a static member on this type. |
---|
| 233 | /// </summary> |
---|
| 234 | public MemberType MemberType(string memberName, IEnumerable<AstType> typeArguments) |
---|
| 235 | { |
---|
| 236 | var memberType = new MemberType(this, memberName); |
---|
| 237 | memberType.TypeArguments.AddRange(typeArguments); |
---|
| 238 | return memberType; |
---|
| 239 | } |
---|
| 240 | |
---|
| 241 | /// <summary> |
---|
| 242 | /// Builds an invocation expression using this type as target. |
---|
| 243 | /// </summary> |
---|
| 244 | public InvocationExpression Invoke(string methodName, IEnumerable<Expression> arguments) |
---|
| 245 | { |
---|
| 246 | return new TypeReferenceExpression { Type = this }.Invoke(methodName, arguments); |
---|
| 247 | } |
---|
| 248 | |
---|
| 249 | /// <summary> |
---|
| 250 | /// Builds an invocation expression using this type as target. |
---|
| 251 | /// </summary> |
---|
| 252 | public InvocationExpression Invoke(string methodName, params Expression[] arguments) |
---|
| 253 | { |
---|
| 254 | return new TypeReferenceExpression { Type = this }.Invoke(methodName, arguments); |
---|
| 255 | } |
---|
| 256 | |
---|
| 257 | /// <summary> |
---|
| 258 | /// Builds an invocation expression using this type as target. |
---|
| 259 | /// </summary> |
---|
| 260 | public InvocationExpression Invoke(string methodName, IEnumerable<AstType> typeArguments, IEnumerable<Expression> arguments) |
---|
| 261 | { |
---|
| 262 | return new TypeReferenceExpression { Type = this }.Invoke(methodName, typeArguments, arguments); |
---|
| 263 | } |
---|
| 264 | |
---|
| 265 | /// <summary> |
---|
| 266 | /// Creates a simple AstType from a dotted name. |
---|
| 267 | /// Does not support generics, arrays, etc. - just simple dotted names, |
---|
| 268 | /// e.g. namespace names. |
---|
| 269 | /// </summary> |
---|
| 270 | public static AstType Create(string dottedName) |
---|
| 271 | { |
---|
| 272 | string[] parts = dottedName.Split('.'); |
---|
| 273 | AstType type = new SimpleType(parts[0]); |
---|
| 274 | for (int i = 1; i < parts.Length; i++) { |
---|
| 275 | type = new MemberType(type, parts[i]); |
---|
| 276 | } |
---|
| 277 | return type; |
---|
| 278 | } |
---|
| 279 | } |
---|
| 280 | } |
---|