private SystemExecutionState ExecuteLine(string line, ImlacSystem system)
{
SystemExecutionState next = SystemExecutionState.Debugging;
if (line.StartsWith("#"))
{
// Comments start with "#", just ignore them
}
else if (line.StartsWith("@"))
{
// A line beginning with an "@" indicates a script to execute.
string scriptFile = line.Substring(1);
next = ExecuteScript(system, scriptFile);
}
else
{
string[] args = null;
DebuggerCommand command = GetDebuggerCommandFromCommandString(line, out args);
if (command == null)
{
// Not a command.
Console.WriteLine("Invalid command.");
}
else
{
next = InvokeConsoleMethod(command, args, system);
}
}
return(next);
}
public SystemExecutionState Prompt(ImlacSystem system)
{
SystemExecutionState next = SystemExecutionState.Debugging;
try
{
system.PrintProcessorStatus();
// Get the command string from the prompt.
string command = _consolePrompt.Prompt().Trim();
if (string.IsNullOrEmpty(command))
{
// Repeat the last command
command = _lastCommand;
Console.WriteLine(">> {0}", command);
}
next = ExecuteLine(command, system);
_lastCommand = command;
}
catch (Exception e)
{
Console.WriteLine(
"Error: {0}",
e.InnerException != null ? e.InnerException.Message : e.Message);
}
return(next);
}
public SystemExecutionState ExecuteScript(ImlacSystem system, string scriptFile)
{
SystemExecutionState state = SystemExecutionState.Halted;
using (StreamReader sr = new StreamReader(scriptFile))
{
while (!sr.EndOfStream)
{
string line = sr.ReadLine();
if (!string.IsNullOrWhiteSpace(line))
{
Console.WriteLine(line);
state = ExecuteLine(line, system);
}
}
}
return(state);
}