1/*
2 * Copyright (C) 2016 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include <wtf/PrintStream.h>
29#include <wtf/text/WTFString.h>
30
31namespace WTF {
32
33class Indenter {
34public:
35 Indenter(unsigned count = 0, String string = " "_s)
36 : m_count(count)
37 , m_string(string)
38 { }
39
40 Indenter(const Indenter& other)
41 : m_count(other.m_count)
42 , m_string(other.m_string)
43 { }
44
45 void dump(PrintStream& out) const
46 {
47 unsigned levels = m_count;
48 while (levels--)
49 out.print(m_string);
50 }
51
52 unsigned operator++() { return ++m_count; }
53 unsigned operator++(int) { return m_count++; }
54 unsigned operator--() { return --m_count; }
55 unsigned operator--(int) { return m_count--; }
56
57private:
58 unsigned m_count;
59 String m_string;
60};
61
62} // namespace WTF
63
64using WTF::Indenter;
65