// Construct an instance of IEnumDebugPropertyInfo2 for the parameters collection only.
private void CreateParameterProperties(enum_DEBUGPROP_INFO_FLAGS dwFields, out uint elementsReturned, out IEnumDebugPropertyInfo2 enumObject)
{
elementsReturned = (uint)_parameters.Count;
DEBUG_PROPERTY_INFO[] propInfo = new DEBUG_PROPERTY_INFO[_parameters.Count];
for (int i = 0; i < propInfo.Length; i++)
{
AD7Property property = new AD7Property(Engine, _parameters[i]);
propInfo[i] = property.ConstructDebugPropertyInfo(dwFields);
}
enumObject = new AD7PropertyInfoEnum(propInfo);
}
// This method evaluates the expression synchronously.
int IDebugExpression2.EvaluateSync(enum_EVALFLAGS dwFlags, uint dwTimeout, IDebugEventCallback2 pExprCallback, out IDebugProperty2 ppResult)
{
ppResult = null;
if ((dwFlags & enum_EVALFLAGS.EVAL_NOSIDEEFFECTS) != 0 && _var.IsVisualized)
{
IVariableInformation variable = _var;
if (variable == null)
{
ppResult = new AD7ErrorProperty(_var.Name, ResourceStrings.NoSideEffectsVisualizerMessage);
}
else
{
_var = variable;
ppResult = new AD7Property(_engine, _var);
}
return(VSConstants.S_OK);
}
_var.SyncEval(dwFlags);
ppResult = new AD7Property(_engine, _var);
return(VSConstants.S_OK);
}
// Construct an instance of IEnumDebugPropertyInfo2 for the combined locals and parameters.
private void CreateLocalsPlusArgsProperties(enum_DEBUGPROP_INFO_FLAGS dwFields, out uint elementsReturned, out IEnumDebugPropertyInfo2 enumObject)
{
elementsReturned = 0;
int localsLength = 0;
if (_locals != null)
{
localsLength = _locals.Count;
elementsReturned += (uint)localsLength;
}
if (_parameters != null)
{
elementsReturned += (uint)_parameters.Count;
}
DEBUG_PROPERTY_INFO[] propInfo = new DEBUG_PROPERTY_INFO[elementsReturned];
if (_locals != null)
{
for (int i = 0; i < _locals.Count; i++)
{
AD7Property property = new AD7Property(Engine, _locals[i]);
propInfo[i] = property.ConstructDebugPropertyInfo(dwFields);
}
}
if (_parameters != null)
{
for (int i = 0; i < _parameters.Count; i++)
{
AD7Property property = new AD7Property(Engine, _parameters[i]);
propInfo[localsLength + i] = property.ConstructDebugPropertyInfo(dwFields);
}
}
enumObject = new AD7PropertyInfoEnum(propInfo);
}
private void InitializeBytes()
{
if (_bytes != null)
{
return;
}
uint fetched = 0;
_bytes = new byte[0];
IDebugMemoryContext2 memAddr;
if (GetMemoryContext(out memAddr) != VSConstants.S_OK)
{
// no address in the expression value, try casting to a char*
VariableInformation v = new VariableInformation("(char*)(" + _variableInformation.FullName() + ")", (VariableInformation)_variableInformation);
v.SyncEval();
if (v.Error)
{
return;
}
AD7Property p = new AD7Property(_engine, v);
uint pLen;
if (p.GetStringCharLength(out pLen) == VSConstants.S_OK)
{
_bytes = new byte[pLen];
p.GetStringRawBytes(pLen, _bytes, out fetched);
}
return;
}
IDebugMemoryBytes2 memContent;
if (((AD7MemoryAddress)memAddr).Engine.GetMemoryBytes(out memContent) != VSConstants.S_OK)
{
return;
}
fetched = 0;
bool eos = false;
byte[] bytes = new byte[s_maxChars + 1];
byte[] chunk = new byte[2048];
while (!eos)
{
// fetched is count of bytes in string so far
// eos == false => fetch < s_maxChars
// eos == true => string is terminated, that is bytes[fetched-1] == 0
uint bytesRead;
uint bytesUnreadable = 0;
// get next chunk
if (memContent.ReadAt(memAddr, (uint)chunk.Length, chunk, out bytesRead, ref bytesUnreadable) != VSConstants.S_OK)
{
break;
}
// copy chunk to bytes
for (uint i = 0; i < bytesRead; ++i)
{
bytes[fetched++] = chunk[i];
if (bytes[fetched - 1] == 0)
{
eos = true; // end of string
break;
}
if (fetched == s_maxChars) // buffer is full
{
bytes[fetched++] = 0; // end the string
eos = true;
break;
}
}
if (bytesRead != chunk.Length)
{
// read to end of available memory
break;
}
// advance to next chunk
memAddr.Add(bytesRead, out memAddr);
}
if (!eos)
{
Debug.Assert(fetched < bytes.Length);
bytes[fetched++] = 0;
}
if (fetched < bytes.Length)
{
_bytes = new byte[fetched];
Array.Copy(bytes, _bytes, (int)fetched);
}
else
{
_bytes = bytes;
}
}