323 lines
8.5 KiB
C#
323 lines
8.5 KiB
C#
//
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// System.Reflection.FieldInfo.cs
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//
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// Author:
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// Miguel de Icaza (miguel@ximian.com)
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//
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// (C) Ximian, Inc. http://www.ximian.com
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// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
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// Copyright 2011 Xamarin Inc (http://www.xamarin.com).
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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using System.Diagnostics;
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using System.Globalization;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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namespace System.Reflection {
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[ComVisible (true)]
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[ComDefaultInterfaceAttribute (typeof (_FieldInfo))]
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[Serializable]
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[ClassInterface(ClassInterfaceType.None)]
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#if MOBILE
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public abstract class FieldInfo : MemberInfo {
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#else
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public abstract class FieldInfo : MemberInfo, _FieldInfo {
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#endif
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public abstract FieldAttributes Attributes {get;}
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public abstract RuntimeFieldHandle FieldHandle {get;}
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protected FieldInfo () {}
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public abstract Type FieldType { get; }
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public abstract object GetValue(object obj);
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public override MemberTypes MemberType {
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get { return MemberTypes.Field;}
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}
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public bool IsLiteral
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{
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get {return (Attributes & FieldAttributes.Literal) != 0;}
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}
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public bool IsStatic
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{
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get {return (Attributes & FieldAttributes.Static) != 0;}
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}
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public bool IsInitOnly
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{
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get {return (Attributes & FieldAttributes.InitOnly) != 0;}
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}
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public Boolean IsPublic
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{
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get
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{
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return (Attributes & FieldAttributes.FieldAccessMask) == FieldAttributes.Public;
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}
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}
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public Boolean IsPrivate
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{
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get
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{
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return (Attributes & FieldAttributes.FieldAccessMask) == FieldAttributes.Private;
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}
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}
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public Boolean IsFamily
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{
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get
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{
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return (Attributes & FieldAttributes.FieldAccessMask) == FieldAttributes.Family;
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}
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}
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public Boolean IsAssembly
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{
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get
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{
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return (Attributes & FieldAttributes.FieldAccessMask) == FieldAttributes.Assembly;
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}
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}
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public Boolean IsFamilyAndAssembly
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{
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get {
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return (Attributes & FieldAttributes.FieldAccessMask) == FieldAttributes.FamANDAssem;
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}
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}
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public Boolean IsFamilyOrAssembly
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{
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get
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{
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return (Attributes & FieldAttributes.FieldAccessMask) == FieldAttributes.FamORAssem;
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}
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}
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public Boolean IsPinvokeImpl
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{
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get
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{
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return (Attributes & FieldAttributes.PinvokeImpl) == FieldAttributes.PinvokeImpl;
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}
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}
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public Boolean IsSpecialName
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{
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get
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{
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return (Attributes & FieldAttributes.SpecialName) == FieldAttributes.SpecialName;
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}
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}
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public Boolean IsNotSerialized
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{
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get
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{
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return (Attributes & FieldAttributes.NotSerialized) == FieldAttributes.NotSerialized;
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}
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}
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public abstract void SetValue (object obj, object value, BindingFlags invokeAttr, Binder binder, CultureInfo culture);
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[DebuggerHidden]
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[DebuggerStepThrough]
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public void SetValue (object obj, object value)
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{
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SetValue (obj, value, 0, null, null);
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}
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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private static extern FieldInfo internal_from_handle_type (IntPtr field_handle, IntPtr type_handle);
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public static FieldInfo GetFieldFromHandle (RuntimeFieldHandle handle)
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{
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if (handle.Value == IntPtr.Zero)
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throw new ArgumentException ("The handle is invalid.");
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return internal_from_handle_type (handle.Value, IntPtr.Zero);
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}
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[ComVisible (false)]
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public static FieldInfo GetFieldFromHandle (RuntimeFieldHandle handle, RuntimeTypeHandle declaringType)
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{
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if (handle.Value == IntPtr.Zero)
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throw new ArgumentException ("The handle is invalid.");
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FieldInfo fi = internal_from_handle_type (handle.Value, declaringType.Value);
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if (fi == null)
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throw new ArgumentException ("The field handle and the type handle are incompatible.");
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return fi;
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}
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//
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// Note: making this abstract imposes an implementation requirement
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// on any class that derives from it. However, since it's also
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// internal, that means only classes inside corlib can derive
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// from FieldInfo. See
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//
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// errors/cs0534-4.cs errors/CS0534-4-lib.cs
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//
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// class/Microsoft.JScript/Microsoft.JScript/JSFieldInfo.cs
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//
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internal virtual int GetFieldOffset ()
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{
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throw new SystemException ("This method should not be called");
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}
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[CLSCompliant(false)]
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public virtual object GetValueDirect (TypedReference obj)
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{
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throw new NotSupportedException(Environment.GetResourceString("NotSupported_AbstractNonCLS"));
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}
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[CLSCompliant(false)]
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public virtual void SetValueDirect (TypedReference obj, object value)
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{
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throw new NotSupportedException(Environment.GetResourceString("NotSupported_AbstractNonCLS"));
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}
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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private extern MarshalAsAttribute get_marshal_info ();
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internal object[] GetPseudoCustomAttributes ()
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{
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int count = 0;
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if (IsNotSerialized)
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count ++;
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if (DeclaringType.IsExplicitLayout)
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count ++;
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MarshalAsAttribute marshalAs = get_marshal_info ();
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if (marshalAs != null)
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count ++;
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if (count == 0)
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return null;
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object[] attrs = new object [count];
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count = 0;
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if (IsNotSerialized)
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attrs [count ++] = new NonSerializedAttribute ();
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if (DeclaringType.IsExplicitLayout)
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attrs [count ++] = new FieldOffsetAttribute (GetFieldOffset ());
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if (marshalAs != null)
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attrs [count ++] = marshalAs;
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return attrs;
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}
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[MethodImplAttribute (MethodImplOptions.InternalCall)]
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extern Type[] GetTypeModifiers (bool optional);
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public virtual Type[] GetOptionalCustomModifiers () {
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Type[] types = GetTypeModifiers (true);
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if (types == null)
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return Type.EmptyTypes;
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return types;
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}
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public virtual Type[] GetRequiredCustomModifiers () {
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Type[] types = GetTypeModifiers (false);
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if (types == null)
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return Type.EmptyTypes;
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return types;
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}
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public virtual object GetRawConstantValue ()
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{
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throw new NotSupportedException ("This non-CLS method is not implemented.");
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}
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public override bool Equals (object obj)
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{
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return obj == (object) this;
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}
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public override int GetHashCode ()
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{
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return base.GetHashCode ();
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}
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public static bool operator == (FieldInfo left, FieldInfo right)
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{
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if ((object)left == (object)right)
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return true;
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if ((object)left == null ^ (object)right == null)
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return false;
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return left.Equals (right);
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}
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public static bool operator != (FieldInfo left, FieldInfo right)
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{
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if ((object)left == (object)right)
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return false;
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if ((object)left == null ^ (object)right == null)
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return true;
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return !left.Equals (right);
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}
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public virtual bool IsSecurityCritical {
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get {
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throw new NotSupportedException ();
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}
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}
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public virtual bool IsSecuritySafeCritical {
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get {
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throw new NotSupportedException ();
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}
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}
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public virtual bool IsSecurityTransparent {
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get {
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throw new NotSupportedException ();
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}
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}
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#if !MOBILE
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void _FieldInfo.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
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{
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throw new NotImplementedException ();
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}
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Type _FieldInfo.GetType ()
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{
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// Required or object::GetType becomes virtual final
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return base.GetType ();
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}
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void _FieldInfo.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
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{
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throw new NotImplementedException ();
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}
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void _FieldInfo.GetTypeInfoCount (out uint pcTInfo)
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{
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throw new NotImplementedException ();
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}
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void _FieldInfo.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
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{
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throw new NotImplementedException ();
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}
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#endif
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}
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}
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