Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / System / CodeDOM / CodeTypeReference.cs / 1 / CodeTypeReference.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.CodeDom { using System.Diagnostics; using System; using Microsoft.Win32; using System.Collections; using System.Runtime.InteropServices; using System.Runtime.Serialization; using System.Globalization; [ ComVisible(true), Serializable, FlagsAttribute ] public enum CodeTypeReferenceOptions { GlobalReference = 0x00000001, GenericTypeParameter = 0x00000002 } ////// [ ClassInterface(ClassInterfaceType.AutoDispatch), ComVisible(true), Serializable, ] public class CodeTypeReference : CodeObject { private string baseType; [OptionalField] private bool isInterface; private int arrayRank; private CodeTypeReference arrayElementType; [OptionalField] private CodeTypeReferenceCollection typeArguments; [OptionalField] private CodeTypeReferenceOptions referenceOptions; [OptionalField] private bool needsFixup = false; public CodeTypeReference() { baseType = string.Empty; this.arrayRank = 0; this.arrayElementType = null; } public CodeTypeReference(Type type) { if (type == null) throw new ArgumentNullException("type"); if (type.IsArray) { this.arrayRank = type.GetArrayRank(); this.arrayElementType = new CodeTypeReference(type.GetElementType()); this.baseType = null; } else { Initialize(type.FullName); this.arrayRank = 0; this.arrayElementType = null; } this.isInterface = type.IsInterface; } public CodeTypeReference (Type type, CodeTypeReferenceOptions codeTypeReferenceOption) : this(type) { referenceOptions = codeTypeReferenceOption; } public CodeTypeReference (String typeName, CodeTypeReferenceOptions codeTypeReferenceOption): this(typeName) { referenceOptions = codeTypeReferenceOption; } ////// Represents a Type /// ////// // We support the reflection format for generice type name. // The format is like: // public CodeTypeReference(string typeName) { Initialize(typeName); } private void Initialize(string typeName) { if (typeName == null || typeName.Length == 0) { typeName = typeof(void).FullName; this.baseType = typeName; this.arrayRank = 0; this.arrayElementType = null; return; } typeName = RipOffAssemblyInformationFromTypeName(typeName); int end = typeName.Length -1; int current = end; needsFixup = true; // default to true, and if we find arity or generic type args, we'll clear the flag. // Scan the entire string for valid array tails and store ranks for array tails // we found in a queue. Queue q = new Queue(); while(current >= 0) { int rank = 1; if( typeName[current--] == ']') { while(current >=0 && typeName[current] == ',') { rank++; current--; } if( current>=0 && typeName[current] == '[') { // found a valid array tail q.Enqueue(rank); current--; end = current; continue; } } break; } // Try find generic type arguments current = end; ArrayList typeArgumentList = new ArrayList(); Stack subTypeNames = new Stack(); if( current > 0 && typeName[current--] == ']') { needsFixup = false; int unmatchedRightBrackets = 1; int subTypeNameEndIndex = end; // Try find the matching '[', if we can't find it, we will not try to parse the string while(current >= 0) { if( typeName[current] == '[' ) { // break if we found matched brackets if( --unmatchedRightBrackets == 0) break; } else if( typeName[current] == ']' ) { ++unmatchedRightBrackets; } else if( typeName[current] == ',' && unmatchedRightBrackets == 1) { // // Type name can contain nested generic types. Following is an example: // System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089], // [System.Collections.Generic.List`1[[System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], // mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]] // // Spliltting by ',' won't work. We need to do first-level split by ','. // if( current + 1 < subTypeNameEndIndex) { subTypeNames.Push(typeName.Substring(current+1 , subTypeNameEndIndex - current - 1)); } subTypeNameEndIndex = current; } --current; } if( current > 0 && (end - current - 1) > 0) { // push the last generic type argument name if there is any if( current + 1 < subTypeNameEndIndex) { subTypeNames.Push(typeName.Substring(current+1 , subTypeNameEndIndex - current - 1)); } // we found matched brackets and the brackets contains some characters. while( subTypeNames.Count > 0) { String name = RipOffAssemblyInformationFromTypeName((string)subTypeNames.Pop()); typeArgumentList.Add(new CodeTypeReference(name)); } end = current - 1; } } if( end < 0) { // this can happen if we have some string like "[...]" this.baseType = typeName; return; } if (q.Count > 0 ) { CodeTypeReference type = new CodeTypeReference(typeName.Substring(0, end + 1)); for(int i = 0; i < typeArgumentList.Count; i++) { type.TypeArguments.Add((CodeTypeReference)typeArgumentList[i]); } while( q.Count > 1) { type = new CodeTypeReference( type, (int)q.Dequeue()); } // we don't need to create a new CodeTypeReference for the last one. Debug.Assert(q.Count == 1 , "We should have one and only one in the rank queue."); this.baseType = null; this.arrayRank = (int)q.Dequeue(); this.arrayElementType = type; } else if( typeArgumentList.Count > 0 ) { for( int i = 0; i < typeArgumentList.Count; i++) { TypeArguments.Add((CodeTypeReference)typeArgumentList[i]); } this.baseType = typeName.Substring(0, end + 1); } else{ this.baseType = typeName; } // Now see if we have some arity. baseType could be null if this is an array type. if (baseType != null && baseType.IndexOf('`') != -1) needsFixup = false; } public CodeTypeReference(string typeName, params CodeTypeReference[] typeArguments) : this(typeName){ if( typeArguments != null && typeArguments.Length > 0) { TypeArguments.AddRange(typeArguments); } } public CodeTypeReference(CodeTypeParameter typeParameter): this( (typeParameter == null) ? (string)null : typeParameter.Name) { referenceOptions = CodeTypeReferenceOptions.GenericTypeParameter; } ///[To be supplied.] ////// public CodeTypeReference(string baseType, int rank) { this.baseType = null; this.arrayRank = rank; this.arrayElementType = new CodeTypeReference(baseType); } ///[To be supplied.] ////// public CodeTypeReference(CodeTypeReference arrayType, int rank) { this.baseType = null; this.arrayRank = rank; this.arrayElementType = arrayType; } ///[To be supplied.] ////// public CodeTypeReference ArrayElementType { get { return arrayElementType; } set { arrayElementType = value; } } ///[To be supplied.] ////// public int ArrayRank { get { return arrayRank; } set { arrayRank = value; } } ///[To be supplied.] ////// public string BaseType { get { if (arrayRank > 0 && arrayElementType != null) { return arrayElementType.BaseType; } if (String.IsNullOrEmpty(baseType)) return string.Empty; string returnType = baseType; if (needsFixup && TypeArguments.Count > 0) returnType = returnType + '`' + TypeArguments.Count.ToString(CultureInfo.InvariantCulture); return returnType; } set { baseType = value; Initialize(baseType); } } [System.Runtime.InteropServices.ComVisible(false)] public CodeTypeReferenceOptions Options { get { return referenceOptions;} set { referenceOptions = value;} } [System.Runtime.InteropServices.ComVisible(false)] public CodeTypeReferenceCollection TypeArguments{ get { if (arrayRank > 0 && arrayElementType != null) { return arrayElementType.TypeArguments; } if( typeArguments == null) { typeArguments = new CodeTypeReferenceCollection(); } return typeArguments; } } internal bool IsInterface { get { // Note that this only works correctly if the Type ctor was used. Otherwise, it's always false. return this.isInterface; } } // // The string for generic type argument might contain assembly information and square bracket pair. // There might be leading spaces in front the type name. // Following function will rip off assembly information and brackets // Following is an example: // " [System.Collections.Generic.List[[System.String, mscorlib, Version=2.0.0.0, Culture=neutral, // PublicKeyToken=b77a5c561934e089]], mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]" // private string RipOffAssemblyInformationFromTypeName(string typeName) { int start = 0; int end = typeName.Length - 1; string result = typeName; // skip white space in the beginning while( start < typeName.Length && Char.IsWhiteSpace(typeName[start])) start++; while( end >= 0 && Char.IsWhiteSpace(typeName[end])) end--; if(start < end) { if (typeName[start] =='[' && typeName[end] == ']') { start++; end--; } // if we still have a ] at the end, there's no assembly info. if (typeName[end] != ']') { int commaCount = 0; for(int index = end; index >= start; index--) { if( typeName[index] == ',') { commaCount++; if( commaCount == 4) { result = typeName.Substring( start, index - start); break; } } } } } return result; } } }[To be supplied.] ///
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