method

untrace_var

v2_4_6 - Show latest stable - Class: Kernel

untrace_var(p1, p2 = v2)

public

Removes tracing for the specified command on the given global variable and returns nil. If no command is specified, removes all tracing for that variable and returns an array containing the commands actually removed.

VALUE
rb_f_untrace_var(int argc, const VALUE *argv)
{
    VALUE var, cmd;
    ID id;
    struct rb_global_entry *entry;
    struct trace_var *trace;
    VALUE data;

    rb_scan_args(argc, argv, "11", &var, &cmd);
    id = rb_check_id(&var);
    if (!id) {
	rb_name_error_str(var, "undefined global variable %"PRIsVALUE"", QUOTE(var));
    }
    if (!rb_id_table_lookup(rb_global_tbl, id, &data)) {
	rb_name_error(id, "undefined global variable %"PRIsVALUE"", QUOTE_ID(id));
    }

    trace = (entry = (struct rb_global_entry *)data)->var->trace;
    if (NIL_P(cmd)) {
	VALUE ary = rb_ary_new();

	while (trace) {
	    struct trace_var *next = trace->next;
	    rb_ary_push(ary, (VALUE)trace->data);
	    trace->removed = 1;
	    trace = next;
	}

	if (!entry->var->block_trace) remove_trace(entry->var);
	return ary;
    }
    else {
	while (trace) {
	    if (trace->data == cmd) {
		trace->removed = 1;
		if (!entry->var->block_trace) remove_trace(entry->var);
		return rb_ary_new3(1, cmd);
	    }
	    trace = trace->next;
	}
    }
    return Qnil;
}

untrace_var

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