static bool CommandLoop(Jint.Expressions.Program program, DebugInformation information, JdbEngine debugger)
{
Console.ForegroundColor = ConsoleColor.White;
Console.BackgroundColor = ConsoleColor.Black;
if (information == null)
{
information = new DebugInformation();
information.CallStack = new Stack <string>();
information.Locals = new JsObject(JsNull.Instance);
foreach (var property in debugger.CurrentScope.GetKeys())
{
information.Locals[property] = debugger.CurrentScope[property];
}
}
else
{
Console.WriteLine("{0}:{1} => {2}", information.CurrentStatement.Source.Start.Line,
information.CurrentStatement.Source.Start.Char,
information.CurrentStatement.Source.Code);
}
try
{
while (true)
{
Console.Write(">");
var command = Console.ReadLine().ToLowerInvariant();
if (command == "bt")
{
// backtrace
int frame = 0;
foreach (string stackframe in information.CallStack)
{
Console.WriteLine("[{0}] {1}", frame++, stackframe);
}
}
else if (command.StartsWith("p "))
{
// find value for next word and print it
string varname = command.Substring(command.IndexOf(" ") + 1);
Console.WriteLine("{0} => {1}", varname, information.Locals[varname].Value);
}
else if (command == "l")
{
// locals
foreach (string key in information.Locals.GetKeys())
{
Console.WriteLine("{0} => {1}", key, information.Locals[key].Value);
}
}
else if (command == "n")
{
// Step
stepping = true;
return(true);
}
else if (command == "c" || command == "r")
{
// continue
stepping = false;
return(true);
}
else if (command == "q")
{
// quit
return(false);
}
else if (command.StartsWith("bp "))
{
// set a breakpoint
string[] split = command.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
int line = 0;
int chr = 0;
string expr = null;
if (split.Length > 1)
{
line = int.Parse(split[1]);
if (split.Length > 2)
{
chr = int.Parse(split[2]);
if (split.Length > 3)
{
expr = split[3];
}
}
debugger.BreakPoints.Add(new BreakPoint(line, chr, expr));
}
}
else if (command == "lbp")
{
// list breakpoints
int bpcount = 0;
foreach (BreakPoint bp in debugger.BreakPoints)
{
Console.WriteLine("{0} => {1}:{2} {3}", bpcount++, bp.Line, bp.Char, bp.Condition);
}
}
else if (command.StartsWith("dbp "))
{
// delete break point
int bpi = int.Parse(command.Substring(command.IndexOf(" ") + 1));
debugger.BreakPoints.RemoveAt(bpi);
}
else
{
// try to eval as an immediate
Console.WriteLine("{0}", debugger.Immediate(command));
}
}
}
finally
{
Console.ResetColor();
}
}
public override void Visit(Jint.Expressions.Program expression)
{
//all global vars are in fact closed on
}
