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//
// Backtrace.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 System;
using System.Collections.Generic;
using Mono.Debugging.Client;
using Mono.Debugging.Backend;
namespace Mono.Debugging.Evaluation
{
public abstract class BaseBacktrace: RemoteFrameObject, IBacktrace
{
Dictionary<int, FrameInfo> frameInfo = new Dictionary<int, FrameInfo> ();
public BaseBacktrace (ObjectValueAdaptor adaptor)
{
Adaptor = adaptor;
}
public abstract StackFrame[] GetStackFrames (int firstIndex, int lastIndex);
public ObjectValueAdaptor Adaptor { get; set; }
protected abstract EvaluationContext GetEvaluationContext (int frameIndex, EvaluationOptions options);
public abstract int FrameCount { get; }
public virtual ObjectValue[] GetLocalVariables (int frameIndex, EvaluationOptions options)
{
FrameInfo frame = GetFrameInfo (frameIndex, options, false);
List<ObjectValue> list = new List<ObjectValue> ();
if (frame == null) {
ObjectValue val = Adaptor.CreateObjectValueAsync ("Local Variables", ObjectValueFlags.EvaluatingGroup, delegate {
frame = GetFrameInfo (frameIndex, options, true);
foreach (ValueReference var in frame.LocalVariables)
list.Add (var.CreateObjectValue (false, options));
return ObjectValue.CreateArray (null, new ObjectPath ("Local Variables"), "", list.Count, ObjectValueFlags.EvaluatingGroup, list.ToArray ());
});
return new ObjectValue [] { val };
}
foreach (ValueReference var in frame.LocalVariables)
list.Add (var.CreateObjectValue (true, options));
return list.ToArray ();
}
public virtual ObjectValue[] GetParameters (int frameIndex, EvaluationOptions options)
{
List<ObjectValue> vars = new List<ObjectValue> ();
FrameInfo frame = GetFrameInfo (frameIndex, options, false);
if (frame == null) {
ObjectValue val = Adaptor.CreateObjectValueAsync ("Parameters", ObjectValueFlags.EvaluatingGroup, delegate {
frame = GetFrameInfo (frameIndex, options, true);
foreach (ValueReference var in frame.Parameters)
vars.Add (var.CreateObjectValue (false, options));
return ObjectValue.CreateArray (null, new ObjectPath ("Parameters"), "", vars.Count, ObjectValueFlags.EvaluatingGroup, vars.ToArray ());
});
return new ObjectValue [] { val };
}
foreach (ValueReference var in frame.Parameters)
vars.Add (var.CreateObjectValue (true, options));
return vars.ToArray ();
}
public virtual ObjectValue GetThisReference (int frameIndex, EvaluationOptions options)
{
FrameInfo frame = GetFrameInfo (frameIndex, options, false);
if (frame == null) {
return Adaptor.CreateObjectValueAsync ("this", ObjectValueFlags.EvaluatingGroup, delegate {
frame = GetFrameInfo (frameIndex, options, true);
ObjectValue[] vals;
if (frame.This != null)
vals = new ObjectValue[] { frame.This.CreateObjectValue (false, options) };
else
vals = new ObjectValue [0];
return ObjectValue.CreateArray (null, new ObjectPath ("this"), "", vals.Length, ObjectValueFlags.EvaluatingGroup, vals);
});
}
if (frame.This != null)
return frame.This.CreateObjectValue (true, options);
else
return null;
}
public virtual ExceptionInfo GetException (int frameIndex, EvaluationOptions options)
{
FrameInfo frame = GetFrameInfo (frameIndex, options, false);
ObjectValue val;
if (frame == null) {
val = Adaptor.CreateObjectValueAsync (options.CurrentExceptionTag, ObjectValueFlags.EvaluatingGroup, delegate {
frame = GetFrameInfo (frameIndex, options, true);
ObjectValue[] vals;
if (frame.Exception != null)
vals = new ObjectValue[] { frame.Exception.CreateObjectValue (false, options) };
else
vals = new ObjectValue [0];
return ObjectValue.CreateArray (null, new ObjectPath (options.CurrentExceptionTag), "", vals.Length, ObjectValueFlags.EvaluatingGroup, vals);
});
}
else if (frame.Exception != null)
val = frame.Exception.CreateObjectValue (true, options);
else
return null;
return new ExceptionInfo (val);
}
public virtual ObjectValue GetExceptionInstance (int frameIndex, EvaluationOptions options)
{
FrameInfo frame = GetFrameInfo (frameIndex, options, false);
if (frame == null) {
return Adaptor.CreateObjectValueAsync (options.CurrentExceptionTag, ObjectValueFlags.EvaluatingGroup, delegate {
frame = GetFrameInfo (frameIndex, options, true);
ObjectValue[] vals;
if (frame.Exception != null)
vals = new ObjectValue[] { frame.Exception.Exception.CreateObjectValue (false, options) };
else
vals = new ObjectValue [0];
return ObjectValue.CreateArray (null, new ObjectPath (options.CurrentExceptionTag), "", vals.Length, ObjectValueFlags.EvaluatingGroup, vals);
});
}
else if (frame.Exception != null)
return frame.Exception.Exception.CreateObjectValue (true, options);
else
return null;
}
public virtual ObjectValue[] GetAllLocals (int frameIndex, EvaluationOptions options)
{
List<ObjectValue> locals = new List<ObjectValue> ();
ObjectValue excObj = GetExceptionInstance (frameIndex, options);
if (excObj != null)
locals.Insert (0, excObj);
locals.AddRange (GetLocalVariables (frameIndex, options));
locals.AddRange (GetParameters (frameIndex, options));
locals.Sort (delegate (ObjectValue v1, ObjectValue v2) {
return v1.Name.CompareTo (v2.Name);
});
ObjectValue thisObj = GetThisReference (frameIndex, options);
if (thisObj != null)
locals.Insert (0, thisObj);
return locals.ToArray ();
}
public virtual ObjectValue[] GetExpressionValues (int frameIndex, string[] expressions, EvaluationOptions options)
{
if (Adaptor.IsEvaluating) {
List<ObjectValue> vals = new List<ObjectValue> ();
foreach (string exp in expressions) {
string tmpExp = exp;
ObjectValue val = Adaptor.CreateObjectValueAsync (tmpExp, ObjectValueFlags.Field, delegate {
EvaluationContext cctx = GetEvaluationContext (frameIndex, options);
return Adaptor.GetExpressionValue (cctx, tmpExp);
});
vals.Add (val);
}
return vals.ToArray ();
}
EvaluationContext ctx = GetEvaluationContext (frameIndex, options);
return ctx.Adapter.GetExpressionValuesAsync (ctx, expressions);
}
public virtual CompletionData GetExpressionCompletionData (int frameIndex, string exp)
{
EvaluationContext ctx = GetEvaluationContext (frameIndex, EvaluationOptions.DefaultOptions);
return ctx.Adapter.GetExpressionCompletionData (ctx, exp);
}
public virtual AssemblyLine[] Disassemble (int frameIndex, int firstLine, int count)
{
throw new System.NotImplementedException();
}
public virtual ValidationResult ValidateExpression (int frameIndex, string expression, EvaluationOptions options)
{
EvaluationContext ctx = GetEvaluationContext (frameIndex, options);
return Adaptor.ValidateExpression (ctx, expression);
}
FrameInfo GetFrameInfo (int frameIndex, EvaluationOptions options, bool ignoreEvalStatus)
{
FrameInfo finfo;
if (frameInfo.TryGetValue (frameIndex, out finfo))
return finfo;
if (!ignoreEvalStatus && Adaptor.IsEvaluating)
return null;
EvaluationContext ctx = GetEvaluationContext (frameIndex, options);
if (ctx == null)
return null;
finfo = new FrameInfo ();
finfo.Context = ctx;
finfo.LocalVariables.AddRange (ctx.Adapter.GetLocalVariables (ctx));
finfo.Parameters.AddRange (ctx.Adapter.GetParameters (ctx));
finfo.This = ctx.Adapter.GetThisReference (ctx);
ValueReference exp = ctx.Adapter.GetCurrentException (ctx);
if (exp != null)
finfo.Exception = new ExceptionInfoSource (ctx, exp);
frameInfo [frameIndex] = finfo;
return finfo;
}
}
class FrameInfo
{
public EvaluationContext Context;
public List<ValueReference> LocalVariables = new List<ValueReference> ();
public List<ValueReference> Parameters = new List<ValueReference> ();
public ValueReference This;
public ExceptionInfoSource Exception;
}
}
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