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The Labs \ Source Viewer \ SSCLI \ System.Reflection.Emit \ FieldBuilder

SSCLI

// ==++==
//
//
//
// The use and distribution terms for this software are contained in the file
// named license.txt, which can be found in the root of this distribution.
// By using this software in any fashion, you are agreeing to be bound by the
// terms of this license.
//
// You must not remove this notice, or any other, from this software.
//
//
// ==--==
namespace System.Reflection.Emit
{
using System.Runtime.InteropServices;
using System;
using CultureInfo = System.Globalization.CultureInfo;
using System.Reflection;
using System.Security.Permissions;
[HostProtection(MayLeakOnAbort = true)]
[ClassInterface(ClassInterfaceType.None)]
[ComDefaultInterface(typeof(_FieldBuilder))]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class FieldBuilder : FieldInfo, _FieldBuilder
{
#region Private Data Members
private int m_fieldTok;
private FieldToken m_tkField;
private TypeBuilder m_typeBuilder;
private string m_fieldName;
private FieldAttributes m_Attributes;
private Type m_fieldType;
internal byte[] m_data;
#endregion
#region Constructor
internal FieldBuilder(TypeBuilder typeBuilder, string fieldName, Type type, Type[] requiredCustomModifiers, Type[] optionalCustomModifiers, FieldAttributes attributes)
{
if (fieldName == null)
throw new ArgumentNullException("fieldName");
if (fieldName.Length == 0)
throw new ArgumentException(Environment.GetResourceString("Argument_EmptyName"), "fieldName");
if (fieldName[0] == '\0')
throw new ArgumentException(Environment.GetResourceString("Argument_IllegalName"), "fieldName");
if (type == null)
throw new ArgumentNullException("type");
if (type == typeof(void))
throw new ArgumentException(Environment.GetResourceString("Argument_BadFieldType"));
m_fieldName = fieldName;
m_typeBuilder = typeBuilder;
m_fieldType = type;
m_Attributes = attributes & ~FieldAttributes.ReservedMask;
SignatureHelper sigHelp = SignatureHelper.GetFieldSigHelper(m_typeBuilder.Module);
sigHelp.AddArgument(type, requiredCustomModifiers, optionalCustomModifiers);
int sigLength;
byte[] signature = sigHelp.InternalGetSignature(out sigLength);
m_fieldTok = TypeBuilder.InternalDefineField(typeBuilder.TypeToken.Token, fieldName, signature, sigLength, m_Attributes, m_typeBuilder.Module);
m_tkField = new FieldToken(m_fieldTok, type);
}
#endregion
#region Internal Members
internal void SetData(byte[] data, int size)
{
if (data != null) {
m_data = new byte[data.Length];
Array.Copy(data, m_data, data.Length);
}
m_typeBuilder.Module.InternalSetFieldRVAContent(m_tkField.Token, data, size);
}
internal TypeBuilder GetTypeBuilder()
{
return m_typeBuilder;
}
#endregion
#region MemberInfo Overrides
internal override int MetadataTokenInternal {
get { return m_fieldTok; }
}
public override Module Module {
get { return m_typeBuilder.Module; }
}
public override string Name {
get { return m_fieldName; }
}
public override Type DeclaringType {
get {
if (m_typeBuilder.m_isHiddenGlobalType == true)
return null;
return m_typeBuilder;
}
}
public override Type ReflectedType {
get {
if (m_typeBuilder.m_isHiddenGlobalType == true)
return null;
return m_typeBuilder;
}
}
#endregion
#region FieldInfo Overrides
public override Type FieldType {
get { return m_fieldType; }
}
public override object GetValue(object obj)
{
// NOTE!! If this is implemented, make sure that this throws
// a NotSupportedException for Save-only dynamic assemblies.
// Otherwise, it could cause the .cctor to be executed.
throw new NotSupportedException(Environment.GetResourceString("NotSupported_DynamicModule"));
}
public override void SetValue(object obj, object val, BindingFlags invokeAttr, Binder binder, CultureInfo culture)
{
// NOTE!! If this is implemented, make sure that this throws
// a NotSupportedException for Save-only dynamic assemblies.
// Otherwise, it could cause the .cctor to be executed.
throw new NotSupportedException(Environment.GetResourceString("NotSupported_DynamicModule"));
}
public override RuntimeFieldHandle FieldHandle {
get {
throw new NotSupportedException(Environment.GetResourceString("NotSupported_DynamicModule"));
}
}
public override FieldAttributes Attributes {
get { return m_Attributes; }
}
#endregion
#region ICustomAttributeProvider Implementation
public override object[] GetCustomAttributes(bool inherit)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_DynamicModule"));
}
public override object[] GetCustomAttributes(Type attributeType, bool inherit)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_DynamicModule"));
}
public override bool IsDefined(Type attributeType, bool inherit)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_DynamicModule"));
}
#endregion
#region Public Members
public FieldToken GetToken()
{
return m_tkField;
}
public void SetOffset(int iOffset)
{
m_typeBuilder.ThrowIfCreated();
TypeBuilder.InternalSetFieldOffset(m_typeBuilder.Module, GetToken().Token, iOffset);
}
[Obsolete("An alternate API is available: Emit the MarshalAs custom attribute instead. http://go.microsoft.com/fwlink/?linkid=14202")]
public void SetMarshal(UnmanagedMarshal unmanagedMarshal)
{
m_typeBuilder.ThrowIfCreated();
if (unmanagedMarshal == null)
throw new ArgumentNullException("unmanagedMarshal");
byte[] ubMarshal = unmanagedMarshal.InternalGetBytes();
TypeBuilder.InternalSetMarshalInfo(m_typeBuilder.Module, GetToken().Token, ubMarshal, ubMarshal.Length);
}
public void SetConstant(object defaultValue)
{
m_typeBuilder.ThrowIfCreated();
TypeBuilder.SetConstantValue(m_typeBuilder.Module, GetToken().Token, m_fieldType, defaultValue);
}
[System.Runtime.InteropServices.ComVisible(true)]
public void SetCustomAttribute(ConstructorInfo con, byte[] binaryAttribute)
{
ModuleBuilder module = m_typeBuilder.Module as ModuleBuilder;
m_typeBuilder.ThrowIfCreated();
if (con == null)
throw new ArgumentNullException("con");
if (binaryAttribute == null)
throw new ArgumentNullException("binaryAttribute");
TypeBuilder.InternalCreateCustomAttribute(m_tkField.Token, module.GetConstructorToken(con).Token, binaryAttribute, module, false);
}
public void SetCustomAttribute(CustomAttributeBuilder customBuilder)
{
m_typeBuilder.ThrowIfCreated();
if (customBuilder == null)
throw new ArgumentNullException("customBuilder");
ModuleBuilder module = m_typeBuilder.Module as ModuleBuilder;
customBuilder.CreateCustomAttribute(module, m_tkField.Token);
}
#endregion
void _FieldBuilder.GetTypeInfoCount(out uint pcTInfo)
{
throw new NotImplementedException();
}
void _FieldBuilder.GetTypeInfo(uint iTInfo, uint lcid, IntPtr ppTInfo)
{
throw new NotImplementedException();
}
void _FieldBuilder.GetIDsOfNames( [In()]
ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
{
throw new NotImplementedException();
}
void _FieldBuilder.Invoke(uint dispIdMember, [In()]
ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
{
throw new NotImplementedException();
}
}
}