// Enumerates the children of a property. This provides support for dereferencing pointers, displaying members of an array, or fields of a class or struct.
// The sample debugger only supports pointer dereferencing as children. This means there is only ever one child.
public int EnumChildren(enum_DEBUGPROP_INFO_FLAGS dwFields, uint dwRadix, ref System.Guid guidFilter, enum_DBG_ATTRIB_FLAGS dwAttribFilter, string pszNameFilter, uint dwTimeout, out IEnumDebugPropertyInfo2 ppEnum)
{
ppEnum = null;
var children = _evalResult.GetChildren((int)dwTimeout);
if (children != null) {
DEBUG_PROPERTY_INFO[] properties = new DEBUG_PROPERTY_INFO[children.Length];
for (int i = 0; i < children.Length; i++) {
properties[i] = new AD7Property(_frame, children[i], true).ConstructDebugPropertyInfo(dwRadix, dwFields);
}
ppEnum = new AD7PropertyEnum(properties);
return VSConstants.S_OK;
}
return VSConstants.S_FALSE;
}
// Construct an instance of IEnumDebugPropertyInfo2 for the combined locals and parameters.
private void CreateLocalsPlusArgsProperties(uint radix, out uint elementsReturned, out IEnumDebugPropertyInfo2 enumObject)
{
elementsReturned = 0;
int localsLength = 0;
if (_locals != null) {
localsLength = _locals.Length;
elementsReturned += (uint)localsLength;
}
if (_parameters != null) {
elementsReturned += (uint)_parameters.Length;
}
DEBUG_PROPERTY_INFO[] propInfo = new DEBUG_PROPERTY_INFO[elementsReturned];
if (_locals != null) {
for (int i = 0; i < _locals.Length; i++) {
AD7Property property = new AD7Property(this, _locals[i], true);
propInfo[i] = property.ConstructDebugPropertyInfo(radix, enum_DEBUGPROP_INFO_FLAGS.DEBUGPROP_INFO_STANDARD);
}
}
if (_parameters != null) {
for (int i = 0; i < _parameters.Length; i++) {
AD7Property property = new AD7Property(this, _parameters[i], true);
propInfo[localsLength + i] = property.ConstructDebugPropertyInfo(radix, enum_DEBUGPROP_INFO_FLAGS.DEBUGPROP_INFO_STANDARD);
}
}
enumObject = new AD7PropertyInfoEnum(propInfo);
}
// Construct an instance of IEnumDebugPropertyInfo2 for the parameters collection only.
private void CreateParameterProperties(uint radix, out uint elementsReturned, out IEnumDebugPropertyInfo2 enumObject)
{
elementsReturned = (uint)_parameters.Length;
DEBUG_PROPERTY_INFO[] propInfo = new DEBUG_PROPERTY_INFO[_parameters.Length];
for (int i = 0; i < propInfo.Length; i++) {
AD7Property property = new AD7Property(this, _parameters[i], true);
propInfo[i] = property.ConstructDebugPropertyInfo(radix, enum_DEBUGPROP_INFO_FLAGS.DEBUGPROP_INFO_STANDARD);
}
enumObject = new AD7PropertyInfoEnum(propInfo);
}
// This method evaluates the expression synchronously.
int IDebugExpression2.EvaluateSync(enum_EVALFLAGS dwFlags, uint dwTimeout, IDebugEventCallback2 pExprCallback, out IDebugProperty2 ppResult)
{
AutoResetEvent completion = new AutoResetEvent(false);
JEvaluationResult result = null;
_frame.StackFrame.ExecuteText(_expression, (obj) => {
result = obj;
completion.Set();
});
while (!_frame.StackFrame.Thread.Process.HasExited && !completion.WaitOne(Math.Min((int)dwTimeout, 100))) {
if (dwTimeout <= 100) {
break;
}
dwTimeout -= 100;
}
if (_frame.StackFrame.Thread.Process.HasExited || result == null) {
ppResult = null;
return VSConstants.E_FAIL;
} else if (result == null) {
ppResult = null;
return DebuggerConstants.E_EVALUATE_TIMEOUT;
}
ppResult = new AD7Property(_frame, result, _writable);
return VSConstants.S_OK;
}