FieldBuilder.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Reflection / Emit / FieldBuilder.cs / 1 / FieldBuilder.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 

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(); 
        }
    }
}

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