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//
// PropertyValueReference.cs
//
// Author:
// Lluis Sanchez Gual <lluis@novell.com>
//
// Copyright (c) 2009 Novell, Inc (http://www.novell.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 Mono.Debugging.Evaluation;
using Mono.Debugger.Soft;
using Mono.Debugging.Client;
using System;
using System.Collections.Generic;
namespace Mono.Debugging.Soft
{
public class PropertyValueReference: SoftValueReference
{
PropertyInfoMirror property;
TypeMirror declaringType;
ObjectValueFlags flags;
MethodMirror getter;
Value[] indexerArgs;
object obj, value;
bool haveValue;
bool safe;
public PropertyValueReference (EvaluationContext ctx, PropertyInfoMirror property, object obj, TypeMirror declaringType, MethodMirror getter, Value[] indexerArgs): base (ctx)
{
this.safe = Context.Adapter.IsSafeToInvokeMethod (ctx, getter, obj ?? declaringType);
this.declaringType = declaringType;
this.indexerArgs = indexerArgs;
this.property = property;
this.getter = getter;
this.obj = obj;
if (getter.IsStatic)
this.obj = null;
var objectMirror = obj as ObjectMirror;
if (objectMirror != null)
EnsureContextHasDomain (objectMirror.Domain);
flags = GetFlags (property, getter);
}
internal static ObjectValueFlags GetFlags (PropertyInfoMirror property, MethodMirror getter)
{
var flags = ObjectValueFlags.Property;
if (property.GetSetMethod (true) == null)
flags |= ObjectValueFlags.ReadOnly;
if (getter.IsStatic)
flags |= ObjectValueFlags.Global;
if (getter.IsPublic)
flags |= ObjectValueFlags.Public;
else if (getter.IsPrivate)
flags |= ObjectValueFlags.Private;
else if (getter.IsFamily)
flags |= ObjectValueFlags.Protected;
else if (getter.IsFamilyAndAssembly)
flags |= ObjectValueFlags.Internal;
else if (getter.IsFamilyOrAssembly)
flags |= ObjectValueFlags.InternalProtected;
if (property.DeclaringType.IsValueType)
flags |= ObjectValueFlags.ReadOnly; // Setting property values on structs is not supported by sdb
return flags;
}
public override ObjectValueFlags Flags {
get {
return flags;
}
}
public override string Name {
get {
return property.Name;
}
}
public override object Type {
get {
return property.PropertyType;
}
}
public override object DeclaringType {
get {
return property.DeclaringType;
}
}
public override object Value {
get {
return GetValue (Context);
}
set {
SetValue (Context, value);
}
}
public override object GetValue (EvaluationContext ctx)
{
if (!haveValue) {
if (!safe)
throw new EvaluatorException ("This property is not safe to evaluate.");
value = ((SoftEvaluationContext) ctx).RuntimeInvoke (getter, obj ?? declaringType, indexerArgs);
haveValue = true;
}
return value;
}
public override void SetValue (EvaluationContext ctx, object value)
{
ctx.AssertTargetInvokeAllowed ();
var args = new Value [indexerArgs != null ? indexerArgs.Length + 1 : 1];
if (indexerArgs != null)
indexerArgs.CopyTo (args, 0);
args [args.Length - 1] = (Value) value;
var setter = property.GetSetMethod (true);
if (setter == null)
throw new EvaluatorException ("Property is read-only");
this.value = null;
haveValue = false;
((SoftEvaluationContext) ctx).RuntimeInvoke (setter, obj ?? declaringType, args);
this.value = value;
haveValue = true;
}
protected override bool CanEvaluate (EvaluationOptions options)
{
if (options.AllowTargetInvoke)
return safe;
if (!safe)
return false;
try {
GetValue (Context.WithOptions (options));
return true;
} catch (ImplicitEvaluationDisabledException) {
return false;
}
}
internal string [] GetTupleElementNames ()
{
return FieldValueReference.GetTupleElementNames (property.GetCustomAttributes (true));
}
}
}