public ArraySubsetVariable(StackFrame stackFrame, TargetArrayObject obj, int[] indicesPefix, int startIndex, int endIndex)
{
this.stackFrame = stackFrame;
this.obj = obj;
this.indicesPefix = indicesPefix;
this.startIndex = startIndex;
this.endIndex = endIndex;
dimension = indicesPefix.Length;
lowerBound = obj.GetLowerBound(stackFrame.Thread, dimension);
upperBound = obj.GetUpperBound(stackFrame.Thread, dimension) - 1;
// Uncoment to test that the whole int range can be handled
//lowerBound = int.MinValue;
//upperBound = int.MaxValue;
}
protected override string Execute(ScriptingContext context,
Expression expression, DisplayFormat format)
{
try {
if (expression is TypeExpression)
{
throw new ScriptingException(
"`{0}' is a type, not a variable.", expression.Name);
}
object retval = expression.Evaluate(context);
EmonicInterpreter.printData output = new EmonicInterpreter.printData();
output.type = "";
output.varValue = "";
output.varNames = "";
if (retval != null)
{
output.type = ((TargetObject)retval).TypeName;
if (output.type == null)
{
output.type = "";
}
switch (((TargetObject)retval).Kind)
{
case TargetObjectKind.Fundamental:
// we send the value of the fundamental type
TargetFundamentalObject tfo = retval as TargetFundamentalObject;
if (tfo == null)
{
// element is "null"
output.varValue = "<null>";
break;
}
output.varValue = tfo.GetObject(context.CurrentThread).ToString();
if (output.varValue == null)
{
output.varValue = "";
}
break;
case TargetObjectKind.Array:
// we send back the number of array elements
TargetArrayObject tao = retval as TargetArrayObject;
if (tao == null)
{
// element is "null"
output.varValue = "<null>";
break;
}
int lower = tao.GetLowerBound(context.CurrentThread, 0);
int upper = tao.GetUpperBound(context.CurrentThread, 0);
output.varNames = (upper - lower).ToString();
break;
// same for struct and class
case TargetObjectKind.Struct:
case TargetObjectKind.Class:
// we send back the member's names
// NOTE! we also show static and constant fields
TargetObject obj = retval as TargetObject;
if (obj.HasAddress && obj.GetAddress(context.CurrentThread).IsNull)
{
output.varValue = "<null>";
break;
}
Mono.Debugger.Thread thread = context.CurrentThread;
TargetClass tc = ((TargetClassObject)retval).Type.GetClass(thread);
if (tc == null)
{
break;
}
TargetFieldInfo[] tfi = tc.GetFields(thread);
if (tfi == null)
{
break;
}
output.varNames = "";
for (int i = 0; i < tfi.Length; i++)
{
if (tfi[i].IsStatic) // do not show static fields, they're not accessible via the instance!
{
continue;
}
output.varNames += tfi[i].Name;
output.varNames += " ";
}
output.varNames = output.varNames.Trim();
break;
case TargetObjectKind.Object:
case TargetObjectKind.Pointer:
case TargetObjectKind.Unknown:
case TargetObjectKind.Function:
case TargetObjectKind.Alias:
case TargetObjectKind.Enum:
context.Print("ERROR: Print Command will return no values because of an implementation error");
break;
}
}
string text = context.FormatObject(retval, format);
context.Print(text);
EmonicInterpreter.printOutput = output;
EmonicInterpreter.printSem.Release();
return(text);
} catch {
EmonicInterpreter.printData output = new EmonicInterpreter.printData();
output.type = "";
output.varValue = "";
output.varNames = "";
EmonicInterpreter.printOutput = output;
EmonicInterpreter.printSem.Release();
throw;
}
}