private InterprEnvironment()
{
m_current_namespace = new ConsoleNamespace();
m_console_vars = m_current_namespace as ConsoleNamespace;
m_not_restored = false;
try {
m_console_vars.Restore();
} catch {
m_not_restored = true;
m_console_vars = new ConsoleNamespace();
m_current_namespace = m_console_vars;
}
}
public Namespace(Namespace previous) {
m_previous_namespace = previous;
}
//****************************************************************************************************
public VarBase Perform(ArgList al) {
Namespace ns = new Namespace(InterprEnvironment.Instance.CurrentNamespace);
ns["result"] = new IntVar(0);
int argc = m_args.Count;
if (al.Count != argc)
throw new CalcException("Ќеверное число параметров");
al.Reset();
for (int i = 0; i < argc; i++) {
ns[m_args[i] as System.String] = al.Get();
}
InterprEnvironment.Instance.CurrentNamespace = ns;
Moment moment = new Moment(this);
if (m_count > 1) {
try {
moment.Run();
}
catch (SyntaxErrorException ex) {
throw ex;
}
catch (CalcException ex) {
throw new CalcException("ќшибка в функции " + m_name + "[] в строке " + (moment.Pos + 1) + " : " + ex.Message);
}
}
VarBase res = ns["result"];
InterprEnvironment.Instance.CurrentNamespace = ns.PreviousNamespace;
if (res == null)
throw new CalcException("ќшибка в функции " + m_name + "[] : переменна¤ result не определена на момент выхода");
return res;
}