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//
// SoftEvaluationContext.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 Mono.Debugging.Evaluation;
using Mono.Debugger.Soft;
using DC = Mono.Debugging.Client;
namespace Mono.Debugging.Soft
{
public class SoftEvaluationContext: EvaluationContext
{
SoftDebuggerSession session;
int stackVersion;
StackFrame frame;
bool sourceAvailable;
public ThreadMirror Thread { get; set; }
public SoftEvaluationContext (SoftDebuggerSession session, StackFrame frame, DC.EvaluationOptions options): base (options)
{
Frame = frame;
Thread = frame.Thread;
string method = frame.Method.Name;
if (frame.Method.DeclaringType != null)
method = frame.Method.DeclaringType.FullName + "." + method;
var location = new DC.SourceLocation (method, frame.FileName, frame.LineNumber, frame.ColumnNumber);
string language;
if (frame.Method != null) {
if (frame.IsNativeTransition) {
language = "Transition";
} else {
language = "Managed";
}
} else {
language = "Native";
}
Evaluator = session.GetEvaluator (new DC.StackFrame (frame.ILOffset, location, language, session.IsExternalCode (frame), true));
Adapter = session.Adaptor;
this.session = session;
this.stackVersion = session.StackVersion;
sourceAvailable = !string.IsNullOrEmpty (frame.FileName) && System.IO.File.Exists (frame.FileName);
}
public StackFrame Frame {
get {
if (stackVersion != session.StackVersion)
UpdateFrame ();
return frame;
}
set {
frame = value;
}
}
public bool SourceCodeAvailable {
get {
if (stackVersion != session.StackVersion)
sourceAvailable = !string.IsNullOrEmpty (Frame.FileName) && System.IO.File.Exists (Frame.FileName);
return sourceAvailable;
}
}
public SoftDebuggerSession Session {
get { return session; }
}
public override void WriteDebuggerError (Exception ex)
{
session.WriteDebuggerOutput (true, ex.ToString ());
}
public override void WriteDebuggerOutput (string message, params object[] values)
{
session.WriteDebuggerOutput (false, string.Format (message, values));
}
public override void CopyFrom (EvaluationContext ctx)
{
base.CopyFrom (ctx);
SoftEvaluationContext other = (SoftEvaluationContext) ctx;
frame = other.frame;
stackVersion = other.stackVersion;
Thread = other.Thread;
session = other.session;
}
static bool IsValueTypeOrPrimitive (TypeMirror type)
{
return type != null && (type.IsValueType || type.IsPrimitive);
}
static bool IsValueTypeOrPrimitive (Type type)
{
return type != null && (type.IsValueType || type.IsPrimitive);
}
public Value RuntimeInvoke (MethodMirror method, object target, Value[] values)
{
if (values != null) {
// Some arguments may need to be boxed
ParameterInfoMirror[] mparams = method.GetParameters ();
if (mparams.Length != values.Length)
throw new EvaluatorException ("Invalid number of arguments when calling: " + method.Name);
for (int n = 0; n < mparams.Length; n++) {
TypeMirror tm = mparams [n].ParameterType;
if (tm.IsValueType || tm.IsPrimitive)
continue;
object type = Adapter.GetValueType (this, values [n]);
TypeMirror argTypeMirror = type as TypeMirror;
Type argType = type as Type;
if (IsValueTypeOrPrimitive (argTypeMirror) || IsValueTypeOrPrimitive (argType)) {
// A value type being assigned to a parameter which is not a value type. The value has to be boxed.
try {
values [n] = Thread.Domain.CreateBoxedValue (values [n]);
} catch (NotSupportedException) {
// This runtime doesn't support creating boxed values
throw new EvaluatorException ("This runtime does not support creating boxed values.");
}
}
}
}
if (!method.IsStatic && method.DeclaringType.IsClass && !IsValueTypeOrPrimitive (method.DeclaringType)) {
object type = Adapter.GetValueType (this, target);
TypeMirror targetTypeMirror = type as TypeMirror;
Type targetType = type as Type;
if ((target is StructMirror && ((StructMirror) target).Type != method.DeclaringType) ||
(IsValueTypeOrPrimitive (targetTypeMirror) || IsValueTypeOrPrimitive (targetType))) {
// A value type being assigned to a parameter which is not a value type. The value has to be boxed.
try {
target = Thread.Domain.CreateBoxedValue ((Value) target);
} catch (NotSupportedException) {
// This runtime doesn't support creating boxed values
throw new EvaluatorException ("This runtime does not support creating boxed values.");
}
}
}
MethodCall mc = new MethodCall (this, method, target, values);
Adapter.AsyncExecute (mc, Options.EvaluationTimeout);
return mc.ReturnValue;
}
void UpdateFrame ()
{
stackVersion = session.StackVersion;
foreach (StackFrame f in Thread.GetFrames ()) {
if (f.FileName == Frame.FileName && f.LineNumber == Frame.LineNumber && f.ILOffset == Frame.ILOffset) {
Frame = f;
break;
}
}
}
}
}
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