internal async Task <VariableInformation> CreateMIDebuggerVariable(ThreadContext ctx, AD7Engine engine, AD7Thread thread)
{
VariableInformation vi = new VariableInformation(Name, ctx, engine, thread, IsParameter);
await vi.Eval();
return(vi);
}
//this constructor is private because it should only be used internally to create children
private VariableInformation(TupleValue results, VariableInformation parent)
: this(parent._ctx, parent._engine, parent.Client)
{
TypeName = results.TryFindString("type");
Value = results.TryFindString("value");
Name = results.FindString("exp");
CountChildren = results.FindUint("numchild");
int index;
if (!results.Contains("value") && (Name == TypeName || Name.Contains("::")))
{
// base classes show up with no value and exp==type
// (sometimes underlying debugger does not follow this convention, when using typedefs in templated types so look for "::" in the field name too)
Name = "base";
Value = TypeName;
VariableNodeType = NodeType.BaseClass;
}
else if (Int32.TryParse(this.Name, System.Globalization.NumberStyles.Integer, null, out index)) // array element
{
Name = '[' + this.Name + ']';
VariableNodeType = NodeType.ArrayElement;
}
else
{
_strippedName = Name;
VariableNodeType = NodeType.Field;
}
_internalName = results.FindString("name");
IsChild = true;
_format = parent._format; // inherit formatting
_parent = parent.VariableNodeType == NodeType.AccessQualifier ? parent._parent : parent;
}
//this constructor is used to create modified expressions from a parent
internal VariableInformation(string expr, VariableInformation parent)
: this(parent._ctx, parent._engine, parent.Client)
{
// strip off formatting string
_strippedName = StripFormatSpecifier(expr, out _format);
Name = expr;
VariableNodeType = NodeType.Root;
}
//this constructor is private because it should only be used internally to create children
private VariableInformation(TupleValue results, VariableInformation parent, string name = null)
: this(parent._ctx, parent._engine, parent.Client)
{
TypeName = results.TryFindString("type");
Value = results.TryFindString("value");
Name = name ?? results.FindString("exp");
if (results.Contains("dynamic"))
{
CountChildren = 1;
}
else
{
CountChildren = results.FindUint("numchild");
}
if (results.Contains("displayhint"))
{
DisplayHint = results.FindString("displayhint");
}
if (results.Contains("attributes"))
{
if (results.FindString("attributes") == "noneditable")
{
_isReadonly = true;
}
_attribsFetched = true;
}
int index;
if (!results.Contains("value") && (Name == TypeName || Name.Contains("::")))
{
// base classes show up with no value and exp==type
// (sometimes underlying debugger does not follow this convention, when using typedefs in templated types so look for "::" in the field name too)
Name = TypeName + " (base)";
Value = TypeName;
VariableNodeType = NodeType.BaseClass;
}
else if (Int32.TryParse(this.Name, System.Globalization.NumberStyles.Integer, null, out index)) // array element
{
Name = '[' + this.Name + ']';
VariableNodeType = NodeType.ArrayElement;
}
else if (this.Name.Length > 2 && this.Name[0] == '[' && this.Name[this.Name.Length - 1] == ']')
{
VariableNodeType = NodeType.ArrayElement;
}
else
{
_strippedName = Name;
VariableNodeType = NodeType.Field;
}
_internalName = results.FindString("name");
IsChild = true;
_format = parent._format; // inherit formatting
_parent = parent.VariableNodeType == NodeType.AccessQualifier ? parent._parent : parent;
this.PropertyInfoFlags = parent.PropertyInfoFlags;
}
//This method gets the locals and parameters and creates an MI debugger variable for each one so that we can manipulate them (and expand children, etc.)
//NOTE: Eval is called
internal async Task <List <VariableInformation> > GetLocalsAndParameters(AD7Thread thread, ThreadContext ctx)
{
List <VariableInformation> variables = new List <VariableInformation>();
ValueListValue localsAndParameters = await MICommandFactory.StackListVariables(PrintValues.NoValues, thread.Id, ctx.Level);
foreach (var localOrParamResult in localsAndParameters.Content)
{
string name = localOrParamResult.FindString("name");
bool isParam = localOrParamResult.TryFindString("arg") == "1";
SimpleVariableInformation simpleInfo = new SimpleVariableInformation(name, isParam);
VariableInformation vi = await simpleInfo.CreateMIDebuggerVariable(ctx, Engine, thread);
variables.Add(vi);
}
return(variables);
}
public VariableInformation FindChildByName(string name)
{
EnsureChildren();
if (CountChildren == 0)
{
return(null);
}
Debug.Assert(Children != null, "Failed to find children");
VariableInformation var = Array.Find(Children, (c) => c.Name == name);
if (var != null)
{
return(var);
}
VariableInformation baseChild = null;
var = Array.Find(Children, (c) => c.VariableNodeType == NodeType.BaseClass && (baseChild = c.FindChildByName(name)) != null);
return(baseChild);
}
private async Task InternalFetchChildren()
{
Results results = await _engine.DebuggedProcess.CmdAsync(string.Format("-var-list-children --simple-values \"{0}\"", _internalName), ResultClass.None);
if (results.ResultClass == ResultClass.done)
{
TupleValue[] children = results.Find <ResultListValue>("children").FindAll <TupleValue>("child");
int i = 0;
bool isArray = IsArrayType();
bool elementIsReadonly = false;
if (isArray)
{
CountChildren = results.FindUint("numchild");
Children = new VariableInformation[CountChildren];
//if (k.Length > 0) // perform attrib check on first array child, apply to all elements
//{
// MICore.Debugger.Results childResults = MICore.Debugger.DecodeResults(k[0]);
// string name = childResults.Find("name");
// Debug.Assert(!string.IsNullOrEmpty(name));
// string attribute = await m_engine.DebuggedProcess.MICommandFactory.VarShowAttributes(name);
// elementIsReadonly = (attribute != "editable");
//}
foreach (var c in children)
{
Children[i] = new VariableInformation(c, this, elementIsReadonly);
i++;
}
}
else
{
List <VariableInformation> listChildren = new List <VariableInformation>();
foreach (var c in children)
{
var variable = new VariableInformation(c, this);
enum_DBG_ATTRIB_FLAGS access = enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_NONE;
if (variable.Name == "public")
{
access = enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_ACCESS_PUBLIC;
variable.VariableNodeType = NodeType.AccessQualifier;
}
else if (variable.Name == "private")
{
access = enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_ACCESS_PRIVATE;
variable.VariableNodeType = NodeType.AccessQualifier;
}
else if (variable.Name == "protected")
{
access = enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_ACCESS_PROTECTED;
variable.VariableNodeType = NodeType.AccessQualifier;
}
if (access != enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_NONE)
{
// Add this child's children
await variable.InternalFetchChildren();
foreach (var child in variable.Children)
{
((VariableInformation)child).Access = access;
listChildren.Add(child);
}
}
else
{
listChildren.Add(variable);
}
}
Children = listChildren.ToArray();
CountChildren = (uint)Children.Length;
}
}
else
{
Children = new VariableInformation[0];
CountChildren = 0;
}
if (_format != null)
{
foreach (var child in Children)
{
await child.Format();
}
}
}
private VariableInformation(TupleValue results, VariableInformation parent, bool ro)
: this(results, parent)
{
_attribsFetched = true; // read-only attribute is passed in at construction
_isReadonly = ro;
}
private void InitializeBytes()
{
if (_bytes != null)
{
return;
}
uint fetched = 0;
_bytes = new byte[0];
IDebugMemoryContext2 memAddr;
if (GetMemoryContext(out memAddr) != Constants.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) == Constants.S_OK)
{
_bytes = new byte[pLen];
p.GetStringRawBytes(pLen, _bytes, out fetched);
}
return;
}
IDebugMemoryBytes2 memContent;
if (((AD7MemoryAddress)memAddr).Engine.GetMemoryBytes(out memContent) != Constants.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) != Constants.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;
}
}
private async Task InternalFetchChildren()
{
this.VerifyNotDisposed();
Results results = await _engine.DebuggedProcess.MICommandFactory.VarListChildren(_internalName, PropertyInfoFlags, ResultClass.None);
if (results.ResultClass == ResultClass.done)
{
TupleValue[] children = results.Contains("children")
? results.Find <ResultListValue>("children").FindAll <TupleValue>("child")
: new TupleValue[0];
int i = 0;
bool isArray = IsArrayType();
if (isArray)
{
CountChildren = results.FindUint("numchild");
Children = new VariableInformation[CountChildren];
foreach (var c in children)
{
Children[i] = new VariableInformation(c, this);
i++;
}
}
else if (IsMapType())
{
//
// support for gdb's pretty-printing built-in displayHint "map", from the gdb docs:
// 'Indicate that the object being printed is “map-like”, and that the
// children of this value can be assumed to alternate between keys and values.'
//
List <VariableInformation> listChildren = new List <VariableInformation>();
for (int p = 0; p + 1 < children.Length; p += 2)
{
// One Variable is created for each pair returned with the first element (p) being the name of the child
// and the second element (p+1) becoming the value.
string name = children[p].FindString("value");
var variable = new VariableInformation(children[p + 1], this, '[' + name + ']');
listChildren.Add(variable);
}
Children = listChildren.ToArray();
CountChildren = (uint)Children.Length;
}
else
{
List <VariableInformation> listChildren = new List <VariableInformation>();
foreach (var c in children)
{
var variable = new VariableInformation(c, this);
enum_DBG_ATTRIB_FLAGS access = enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_NONE;
if (variable.Name == "public")
{
access = enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_ACCESS_PUBLIC;
variable.VariableNodeType = NodeType.AccessQualifier;
}
else if (variable.Name == "private")
{
access = enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_ACCESS_PRIVATE;
variable.VariableNodeType = NodeType.AccessQualifier;
}
else if (variable.Name == "protected")
{
access = enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_ACCESS_PROTECTED;
variable.VariableNodeType = NodeType.AccessQualifier;
}
if (access != enum_DBG_ATTRIB_FLAGS.DBG_ATTRIB_NONE)
{
// Add this child's children
await variable.InternalFetchChildren();
foreach (var child in variable.Children)
{
((VariableInformation)child).Access = access;
listChildren.Add(child);
}
}
else
{
listChildren.Add(variable);
}
}
Children = listChildren.ToArray();
CountChildren = (uint)Children.Length;
}
}
else
{
Children = new VariableInformation[0];
CountChildren = 0;
}
if (_format != null)
{
foreach (var child in Children)
{
await child.Format();
}
}
}
