// This method evaluates the expression synchronously.
int IDebugExpression2.EvaluateSync(enum_EVALFLAGS dwFlags, uint dwTimeout, IDebugEventCallback2 pExprCallback, out IDebugProperty2 ppResult)
{
var timeout = TimeSpan.FromMilliseconds(dwTimeout);
var tokenSource = new CancellationTokenSource(timeout);
ppResult = null;
NodeEvaluationResult result;
try
{
result = this._frame.StackFrame.ExecuteTextAsync(this._expression, tokenSource.Token).WaitAsync(timeout, tokenSource.Token).WaitAndUnwrapExceptions();
}
catch (DebuggerCommandException ex)
{
ppResult = new AD7EvalErrorProperty(ex.Message);
return(VSConstants.S_OK);
}
catch (OperationCanceledException)
{
return(DebuggerConstants.E_EVALUATE_TIMEOUT);
}
if (result == null)
{
return(VSConstants.E_FAIL);
}
ppResult = new AD7Property(this._frame, result);
return(VSConstants.S_OK);
}
// This method evaluates the expression asynchronously.
// This method should return immediately after it has started the expression evaluation.
// When the expression is successfully evaluated, an IDebugExpressionEvaluationCompleteEvent2
// must be sent to the IDebugEventCallback2 event callback
int IDebugExpression2.EvaluateAsync(enum_EVALFLAGS dwFlags, IDebugEventCallback2 pExprCallback) {
_tokenSource = new CancellationTokenSource();
_frame.StackFrame.ExecuteTextAsync(_expression, _tokenSource.Token)
.ContinueWith(p => {
try {
IDebugProperty2 property;
if (p.Exception != null && p.Exception.InnerException != null) {
property = new AD7EvalErrorProperty(p.Exception.InnerException.Message);
} else if (p.IsCanceled) {
property = new AD7EvalErrorProperty("Evaluation canceled");
} else if (p.IsFaulted || p.Result == null) {
property = new AD7EvalErrorProperty("Error");
} else {
property = new AD7Property(_frame, p.Result);
}
_tokenSource.Token.ThrowIfCancellationRequested();
_frame.Engine.Send(
new AD7ExpressionEvaluationCompleteEvent(this, property),
AD7ExpressionEvaluationCompleteEvent.IID,
_frame.Engine,
_frame.Thread);
} finally {
_tokenSource.Dispose();
_tokenSource = null;
}
}, _tokenSource.Token);
return VSConstants.S_OK;
}
// This method evaluates the expression asynchronously.
// This method should return immediately after it has started the expression evaluation.
// When the expression is successfully evaluated, an IDebugExpressionEvaluationCompleteEvent2
// must be sent to the IDebugEventCallback2 event callback
int IDebugExpression2.EvaluateAsync(enum_EVALFLAGS dwFlags, IDebugEventCallback2 pExprCallback)
{
this._tokenSource = new CancellationTokenSource();
this._frame.StackFrame.ExecuteTextAsync(this._expression, this._tokenSource.Token)
.ContinueWith(p =>
{
try
{
IDebugProperty2 property;
if (p.Exception != null && p.Exception.InnerException != null)
{
property = new AD7EvalErrorProperty(p.Exception.InnerException.Message);
}
else if (p.IsCanceled)
{
property = new AD7EvalErrorProperty("Evaluation canceled");
}
else if (p.IsFaulted || p.Result == null)
{
property = new AD7EvalErrorProperty("Error");
}
else
{
property = new AD7Property(this._frame, p.Result);
}
this._tokenSource.Token.ThrowIfCancellationRequested();
this._frame.Engine.Send(
new AD7ExpressionEvaluationCompleteEvent(this, property),
AD7ExpressionEvaluationCompleteEvent.IID,
this._frame.Engine,
this._frame.Thread);
}
finally
{
this._tokenSource.Dispose();
this._tokenSource = null;
}
}, this._tokenSource.Token);
return(VSConstants.S_OK);
}
// This method evaluates the expression synchronously.
int IDebugExpression2.EvaluateSync(enum_EVALFLAGS dwFlags, uint dwTimeout, IDebugEventCallback2 pExprCallback, out IDebugProperty2 ppResult) {
TimeSpan timeout = TimeSpan.FromMilliseconds(dwTimeout);
var tokenSource = new CancellationTokenSource(timeout);
ppResult = null;
NodeEvaluationResult result;
try {
result = _frame.StackFrame.ExecuteTextAsync(_expression, tokenSource.Token).WaitAsync(timeout, tokenSource.Token).WaitAndUnwrapExceptions();
} catch (DebuggerCommandException ex) {
ppResult = new AD7EvalErrorProperty(ex.Message);
return VSConstants.S_OK;
} catch (OperationCanceledException) {
return DebuggerConstants.E_EVALUATE_TIMEOUT;
}
if (result == null) {
return VSConstants.E_FAIL;
}
ppResult = new AD7Property(_frame, result);
return VSConstants.S_OK;
}
