internal virtual bool watchpointAdd(WatchAction a)
{
return m_watchpoints.Add(a) >= 0;
}
/// <summary> Request to add a new watchpoint
/// This may result in one of two things happening
/// (1) a new watchpoint could be added or
/// (2) an existing watchpoint may be modified.
///
/// The watch, awatch, and rwatch commands will set a watchpoint on the
/// given expression. The different commands control the read/write aspect
/// of the watchpoint.
///
/// awatch will trigger a break if the expression is read or written.
/// rwatch will trigger a break if the expression is read.
/// watch will trigger a break if the expression is written.
/// </summary>
internal virtual void doWatch(bool read, bool write)
{
try
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
/* pull the rest of the line */
String s = restOfLine();
int flags = 3;
if (read && write)
flags = WatchKind.READWRITE;
else if (read)
flags = WatchKind.READ;
else if (write)
flags = WatchKind.WRITE;
// snapshot of our existing list
Watch[] list = m_session.WatchList;
// We need to separate the front part the 'a.b' in 'a.b.c'
// of the expression to resolve it into a variable
// We usually get back a VariableFacade which contains
// the context id (i.e the variable id) and the member name.
ValueExp expr = parseExpression(s);
VariableFacade result = (VariableFacade) evalExpression(expr);
// extract the 2 pieces and get the raw variable.
int varId = result.Context; // TODO fix this??? -mike
String memberName = result.getName();
Value v = m_session.getValue(varId);
// attempt to set.
Watch w = m_session.setWatch(v, memberName, flags);
if (w == null)
{
// failed
System.Collections.IDictionary args = new System.Collections.Hashtable();
args["expression"] = s; //$NON-NLS-1$
err(LocalizationManager.getLocalizedTextString("watchpointCouldNotBeSet", args)); //$NON-NLS-1$
}
else
{
// if modified then lists are same length
// otherwise 1 will be added
Watch[] newList = m_session.WatchList;
if (newList.Length == list.Length)
{
// modified, lets locate the one that changed
// and reset it
int at = missingWatchpointIndexOf(newList);
WatchAction a = null;
try
{
a = watchpointAt(at);
}
catch (System.IndexOutOfRangeException)
{
// this is pretty bad it means the player thinks we have a watchpoint
// but we don't have a record of it. So let's create a new one
// and hope that we are now in sync with the player.
a = new WatchAction(w);
}
// modify our view of the watchpoint
int id = a.Id;
a.resetWatch(w);
System.Collections.IDictionary args = new System.Collections.Hashtable();
args["watchpointNumber"] = System.Convert.ToString(id); //$NON-NLS-1$
args["expression"] = s; //$NON-NLS-1$
args["watchpointMode"] = getWatchpointModeString(a.Kind); //$NON-NLS-1$
sb.Append(LocalizationManager.getLocalizedTextString("changedWatchpointMode", args)); //$NON-NLS-1$
}
else
{
// newly added
WatchAction a = new WatchAction(w);
watchpointAdd(a);
int which = a.Id;
System.Collections.IDictionary args = new System.Collections.Hashtable();
args["watchpointNumber"] = System.Convert.ToString(which); //$NON-NLS-1$
args["expression"] = s; //$NON-NLS-1$
sb.Append(LocalizationManager.getLocalizedTextString("createdWatchpoint", args)); //$NON-NLS-1$
}
output(sb.ToString());
}
}
catch (System.IndexOutOfRangeException)
{
// We should really do some cleanup after this exception
// since it most likely means we can't find the watchpoint
// that was just modified, therefore our watchlists are
// out of sync with those of the API.
err(LocalizationManager.getLocalizedTextString("badWatchpointNumber")); //$NON-NLS-1$
}
catch (System.NullReferenceException)
{
err(LocalizationManager.getLocalizedTextString("couldNotEvaluate")); //$NON-NLS-1$
}
catch (System.InvalidCastException)
{
err(LocalizationManager.getLocalizedTextString("couldNotResolveExpression")); //$NON-NLS-1$
}
}