Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Reflection / Emit / AQNBuilder.cs / 1 / AQNBuilder.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== using System; using System.Collections.Generic; using System.Runtime.CompilerServices; namespace System.Reflection.Emit { // TypeNameBuilder is NOT thread safe NOR hardened for OOM NOR reliable internal class TypeNameBuilder { internal enum Format { ToString, FullName, AssemblyQualifiedName, } #region FCalls [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern IntPtr _CreateTypeNameBuilder(); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _ReleaseTypeNameBuilder(IntPtr pAQN); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _OpenGenericArguments(IntPtr tnb); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _CloseGenericArguments(IntPtr tnb); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _OpenGenericArgument(IntPtr tnb); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _CloseGenericArgument(IntPtr tnb); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _AddName(IntPtr tnb, string name); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _AddPointer(IntPtr tnb); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _AddByRef(IntPtr tnb); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _AddSzArray(IntPtr tnb); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _AddArray(IntPtr tnb, int rank); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _AddAssemblySpec(IntPtr tnb, string assemblySpec); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern string _ToString(IntPtr tnb); [MethodImplAttribute(MethodImplOptions.InternalCall)] private static extern void _Clear(IntPtr tnb); #endregion #region Static Members // TypeNameBuilder is NOT thread safe NOR hardened for OOM NOR reliable internal static string ToString(Type type, Format format) { if (format == Format.FullName || format == Format.AssemblyQualifiedName) { if (!type.IsGenericTypeDefinition && type.ContainsGenericParameters) return null; } TypeNameBuilder tnb = new TypeNameBuilder(_CreateTypeNameBuilder()); tnb.Clear(); tnb.ConstructAssemblyQualifiedNameWorker(type, format); string toString = tnb.ToString(); tnb.Dispose(); return toString; } #endregion #region Private Data Members private IntPtr m_typeNameBuilder; #endregion #region Constructor private TypeNameBuilder(IntPtr typeNameBuilder) { m_typeNameBuilder = typeNameBuilder; } internal void Dispose() { _ReleaseTypeNameBuilder(m_typeNameBuilder); } #endregion #region private Members private void AddElementType(Type elementType) { if (elementType.HasElementType) AddElementType(elementType.GetElementType()); if (elementType.IsPointer) AddPointer(); else if (elementType.IsByRef) AddByRef(); else if (elementType.IsSzArray) AddSzArray(); else if (elementType.IsArray) AddArray(elementType.GetArrayRank()); } private void ConstructAssemblyQualifiedNameWorker(Type type, Format format) { Type rootType = type; while (rootType.HasElementType) rootType = rootType.GetElementType(); // Append namespace + nesting + name Listnestings = new List (); for (Type t = rootType; t != null; t = t.IsGenericParameter ? null : t.DeclaringType) nestings.Add(t); for (int i = nestings.Count - 1; i >= 0; i--) { Type enclosingType = nestings[i]; string name = enclosingType.Name; if (i == nestings.Count - 1 && enclosingType.Namespace != null && enclosingType.Namespace.Length != 0) name = enclosingType.Namespace + "." + name; AddName(name); } // Append generic arguments if (rootType.IsGenericType && (!rootType.IsGenericTypeDefinition || format == Format.ToString)) { Type[] genericArguments = rootType.GetGenericArguments(); OpenGenericArguments(); for (int i = 0; i < genericArguments.Length; i++) { Format genericArgumentsFormat = format == Format.FullName ? Format.AssemblyQualifiedName : format; OpenGenericArgument(); ConstructAssemblyQualifiedNameWorker(genericArguments[i], genericArgumentsFormat); CloseGenericArgument(); } CloseGenericArguments(); } // Append pointer, byRef and array qualifiers AddElementType(type); if (format == Format.AssemblyQualifiedName) AddAssemblySpec(type.Module.Assembly.FullName); } private void OpenGenericArguments() { _OpenGenericArguments(m_typeNameBuilder); } private void CloseGenericArguments() { _CloseGenericArguments(m_typeNameBuilder); } private void OpenGenericArgument() { _OpenGenericArgument(m_typeNameBuilder); } private void CloseGenericArgument() { _CloseGenericArgument(m_typeNameBuilder); } private void AddName(string name) { _AddName(m_typeNameBuilder, name); } private void AddPointer() { _AddPointer(m_typeNameBuilder); } private void AddByRef() { _AddByRef(m_typeNameBuilder); } private void AddSzArray() { _AddSzArray(m_typeNameBuilder); } private void AddArray(int rank) { _AddArray(m_typeNameBuilder, rank); } private void AddAssemblySpec(string assemblySpec) { _AddAssemblySpec(m_typeNameBuilder, assemblySpec); } public override string ToString() { return _ToString(m_typeNameBuilder); } private void Clear() { _Clear(m_typeNameBuilder); } #endregion } }
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