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// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
using System;
using System.Reflection;
using System.Security.Permissions;
using System.Runtime.InteropServices;
namespace System.Reflection.Emit
{
[ClassInterface(ClassInterfaceType.None)]
[ComDefaultInterface(typeof(_LocalBuilder))]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class LocalBuilder : LocalVariableInfo, _LocalBuilder
{
#region Private Data Members
private int m_localIndex;
private Type m_localType;
private MethodInfo m_methodBuilder;
private bool m_isPinned;
#endregion
#region Constructor
private LocalBuilder() { }
internal LocalBuilder(int localIndex, Type localType, MethodInfo methodBuilder)
: this(localIndex, localType, methodBuilder, false) { }
internal LocalBuilder(int localIndex, Type localType, MethodInfo methodBuilder, bool isPinned)
{
m_isPinned = isPinned;
m_localIndex = localIndex;
m_localType = localType;
m_methodBuilder = methodBuilder;
}
#endregion
#region Internal Members
internal int GetLocalIndex()
{
return m_localIndex;
}
internal MethodInfo GetMethodBuilder()
{
return m_methodBuilder;
}
#endregion
#region LocalVariableInfo Override
public override bool IsPinned { get { return m_isPinned; } }
public override Type LocalType
{
get
{
return m_localType;
}
}
public override int LocalIndex { get { return m_localIndex; } }
#endregion
#region Public Members
public void SetLocalSymInfo(String name)
{
SetLocalSymInfo(name, 0, 0);
}
public void SetLocalSymInfo(String name, int startOffset, int endOffset)
{
ModuleBuilder dynMod;
SignatureHelper sigHelp;
int sigLength;
byte[] signature;
byte[] mungedSig;
int index;
MethodBuilder methodBuilder = m_methodBuilder as MethodBuilder;
if (methodBuilder == null)
// it's a light code gen entity
throw new NotSupportedException();
dynMod = (ModuleBuilder) methodBuilder.Module;
if (methodBuilder.IsTypeCreated())
{
// cannot change method after its containing type has been created
throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_TypeHasBeenCreated"));
}
// set the name and range of offset for the local
if (dynMod.GetSymWriter() == null)
{
// cannot set local name if not debug module
throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_NotADebugModule"));
}
sigHelp = SignatureHelper.GetFieldSigHelper(dynMod);
sigHelp.AddArgument(m_localType);
signature = sigHelp.InternalGetSignature(out sigLength);
// The symbol store doesn't want the calling convention on the
// front of the signature, but InternalGetSignature returns
// the callinging convention. So we strip it off. This is a
// bit unfortunate, since it means that we need to allocate
// yet another array of bytes...
mungedSig = new byte[sigLength - 1];
Array.Copy(signature, 1, mungedSig, 0, sigLength - 1);
index = methodBuilder.GetILGenerator().m_ScopeTree.GetCurrentActiveScopeIndex();
if (index == -1)
{
// top level scope information is kept with methodBuilder
methodBuilder.m_localSymInfo.AddLocalSymInfo(
name,
mungedSig,
m_localIndex,
startOffset,
endOffset);
}
else
{
methodBuilder.GetILGenerator().m_ScopeTree.AddLocalSymInfoToCurrentScope(
name,
mungedSig,
m_localIndex,
startOffset,
endOffset);
}
}
#endregion
#if !FEATURE_CORECLR
void _LocalBuilder.GetTypeInfoCount(out uint pcTInfo)
{
throw new NotImplementedException();
}
void _LocalBuilder.GetTypeInfo(uint iTInfo, uint lcid, IntPtr ppTInfo)
{
throw new NotImplementedException();
}
void _LocalBuilder.GetIDsOfNames([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
{
throw new NotImplementedException();
}
void _LocalBuilder.Invoke(uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
{
throw new NotImplementedException();
}
#endif
}
}
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