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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Runtime.Versioning;
using System.Runtime.InteropServices;
using System.Security;
namespace System.Reflection.Emit
{
// TypeNameBuilder is NOT thread safe NOR reliable
internal class TypeNameBuilder
{
internal enum Format
{
ToString,
FullName,
AssemblyQualifiedName,
}
#region QCalls
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern IntPtr CreateTypeNameBuilder();
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void ReleaseTypeNameBuilder(IntPtr pAQN);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void OpenGenericArguments(IntPtr tnb);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void CloseGenericArguments(IntPtr tnb);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void OpenGenericArgument(IntPtr tnb);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void CloseGenericArgument(IntPtr tnb);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void AddName(IntPtr tnb, string name);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void AddPointer(IntPtr tnb);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void AddByRef(IntPtr tnb);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void AddSzArray(IntPtr tnb);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void AddArray(IntPtr tnb, int rank);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void AddAssemblySpec(IntPtr tnb, string assemblySpec);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void ToString(IntPtr tnb, StringHandleOnStack retString);
[System.Security.SecurityCritical] // auto-generated
[DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
[SuppressUnmanagedCodeSecurity]
private static extern void Clear(IntPtr tnb);
#endregion
#region Static Members
// TypeNameBuilder is NOT thread safe NOR reliable
[System.Security.SecuritySafeCritical] // auto-generated
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; }
[System.Security.SecurityCritical] // auto-generated
internal void Dispose() { ReleaseTypeNameBuilder(m_typeNameBuilder); }
#endregion
#region private Members
[System.Security.SecurityCritical] // auto-generated
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());
}
[System.Security.SecurityCritical] // auto-generated
private void ConstructAssemblyQualifiedNameWorker(Type type, Format format)
{
Type rootType = type;
while (rootType.HasElementType)
rootType = rootType.GetElementType();
// Append namespace + nesting + name
List<Type> nestings = new List<Type>();
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);
}
[System.Security.SecurityCritical] // auto-generated
private void OpenGenericArguments() { OpenGenericArguments(m_typeNameBuilder); }
[System.Security.SecurityCritical] // auto-generated
private void CloseGenericArguments() { CloseGenericArguments(m_typeNameBuilder); }
[System.Security.SecurityCritical] // auto-generated
private void OpenGenericArgument() { OpenGenericArgument(m_typeNameBuilder); }
[System.Security.SecurityCritical] // auto-generated
private void CloseGenericArgument() { CloseGenericArgument(m_typeNameBuilder); }
[System.Security.SecurityCritical] // auto-generated
private void AddName(string name) { AddName(m_typeNameBuilder, name); }
[System.Security.SecurityCritical] // auto-generated
private void AddPointer() { AddPointer(m_typeNameBuilder); }
[System.Security.SecurityCritical] // auto-generated
private void AddByRef() { AddByRef(m_typeNameBuilder); }
[System.Security.SecurityCritical] // auto-generated
private void AddSzArray() { AddSzArray(m_typeNameBuilder); }
[System.Security.SecurityCritical] // auto-generated
private void AddArray(int rank) { AddArray(m_typeNameBuilder, rank); }
[System.Security.SecurityCritical] // auto-generated
private void AddAssemblySpec(string assemblySpec) { AddAssemblySpec(m_typeNameBuilder, assemblySpec); }
[System.Security.SecuritySafeCritical] // auto-generated
public override string ToString() { string ret = null; ToString(m_typeNameBuilder, JitHelpers.GetStringHandleOnStack(ref ret)); return ret; }
[System.Security.SecurityCritical] // auto-generated
private void Clear() { Clear(m_typeNameBuilder); }
#endregion
}
}
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