/// <summary>
/// Changes the tracing mode of a variable. If it is not traced, trace it beforehand
/// </summary>
/// <param name="var_expr"> Traced variable</param>
/// <param name="mode_expr"> Mode (expresion content as string)</param>
/// <returns> <see cref="NullVar"/> (equivalent of null/void)</returns>
private static NullVar traceModeFunction(Expression var_expr, Expression mode_expr)
{
Tracer.printTrace($"Tracing \"{var_expr.expr}\" with mode \"{mode_expr.expr}\"");
// get the variable
Variable var = var_expr.evaluate();
// change the tracing mode (using in Alteration.mode)
var.trace_mode = mode_expr.expr;
// trace it if not already traced
if (!var.isTraced())
{
var.startTracing();
}
return(new NullVar());
}
public override void execute()
{
setContext();
int context_integrity_check = Context.getStatusStackCount();
// the tracing instruction execution doesn't take any Tracer.updateTracers() calls
foreach (Expression traced_expr in _traced_vars)
{
Variable traced_var = traced_expr.evaluate();
if (traced_var.isTraced())
{
Debugging.print("trying to trace a variable that is already traced: " + traced_expr.expr);
continue;
}
traced_var.startTracing();
}
// Smooth Context
Context.resetUntilCountReached(context_integrity_check);
Context.reset();
}