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//
// FieldValueReference.cs
//
// Authors: Lluis Sanchez Gual <lluis@novell.com>
// Jeffrey Stedfast <jeff@xamarin.com>
//
// Copyright (c) 2009 Novell, Inc (http://www.novell.com)
// Copyright (c) 2012 Xamarin Inc. (http://www.xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Reflection;
using Mono.Debugging.Evaluation;
using Mono.Debugger.Soft;
using Mono.Debugging.Client;
namespace Mono.Debugging.Soft
{
public class FieldValueReference: ValueReference
{
FieldInfoMirror field;
object obj;
TypeMirror declaringType;
ObjectValueFlags flags;
string vname;
public FieldValueReference (EvaluationContext ctx, FieldInfoMirror field, object obj, TypeMirror declaringType)
: this (ctx, field, obj, declaringType, null, ObjectValueFlags.Field)
{
}
public FieldValueReference (EvaluationContext ctx, FieldInfoMirror field, object obj, TypeMirror declaringType, string vname, ObjectValueFlags vflags): base (ctx)
{
this.field = field;
this.obj = obj;
this.declaringType = declaringType;
this.vname = vname;
flags = vflags;
if (field.IsStatic) {
flags |= ObjectValueFlags.Global;
this.obj = null;
}
if (field.IsPublic)
flags |= ObjectValueFlags.Public;
else if (field.IsPrivate)
flags |= ObjectValueFlags.Private;
else if (field.IsFamily)
flags |= ObjectValueFlags.Protected;
else if (field.IsFamilyAndAssembly)
flags |= ObjectValueFlags.Internal;
else if (field.IsFamilyOrAssembly)
flags |= ObjectValueFlags.InternalProtected;
if (obj is PrimitiveValue)
flags |= ObjectValueFlags.ReadOnly;
}
public override ObjectValueFlags Flags {
get {
return flags;
}
}
public override string Name {
get {
return vname ?? field.Name;
}
}
public override object Type {
get {
return field.FieldType;
}
}
public override object DeclaringType {
get {
return field.DeclaringType;
}
}
public override object Value {
get {
if (obj == null) {
// If the type hasn't already been loaded, invoke the .cctor() for types w/ the BeforeFieldInit attribute.
Context.Adapter.ForceLoadType (Context, declaringType);
return declaringType.GetValue (field);
} else if (obj is ObjectMirror) {
return ((ObjectMirror)obj).GetValue (field);
} else if (obj is StructMirror) {
StructMirror sm = (StructMirror)obj;
int idx = 0;
foreach (FieldInfoMirror f in sm.Type.GetFields ()) {
if (f.IsStatic) continue;
if (f == field)
break;
idx++;
}
return sm.Fields [idx];
} else if (obj is StringMirror) {
SoftEvaluationContext cx = (SoftEvaluationContext) Context;
StringMirror val = (StringMirror) obj;
FieldInfo rfield = typeof(string).GetField (field.Name, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
return cx.Session.VirtualMachine.CreateValue (rfield.GetValue (val.Value));
} else {
SoftEvaluationContext cx = (SoftEvaluationContext) Context;
PrimitiveValue val = (PrimitiveValue) obj;
if (val.Value == null)
return null;
FieldInfo rfield = val.Value.GetType ().GetField (field.Name, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
return cx.Session.VirtualMachine.CreateValue (rfield.GetValue (val.Value));
}
}
set {
if (obj == null)
declaringType.SetValue (field, (Value)value);
else if (obj is ObjectMirror)
((ObjectMirror)obj).SetValue (field, (Value)value);
else if (obj is StructMirror) {
StructMirror sm = (StructMirror)obj;
int idx = 0;
foreach (FieldInfoMirror f in sm.Type.GetFields ()) {
if (f.IsStatic) continue;
if (f == field)
break;
idx++;
}
if (idx != -1) {
sm.Fields [idx] = (Value)value;
// Structs are handled by-value in the debugger, so the source of the object has to be updated
if (ParentSource != null && obj != null)
ParentSource.Value = obj;
}
}
else
throw new NotSupportedException ();
}
}
}
}
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