/src/serenity/AK/DeprecatedFlyString.cpp
Line | Count | Source |
1 | | /* |
2 | | * Copyright (c) 2020, Andreas Kling <kling@serenityos.org> |
3 | | * |
4 | | * SPDX-License-Identifier: BSD-2-Clause |
5 | | */ |
6 | | |
7 | | #include <AK/ByteString.h> |
8 | | #include <AK/DeprecatedFlyString.h> |
9 | | #include <AK/HashTable.h> |
10 | | #include <AK/Optional.h> |
11 | | #include <AK/Singleton.h> |
12 | | #include <AK/StringUtils.h> |
13 | | #include <AK/StringView.h> |
14 | | |
15 | | namespace AK { |
16 | | |
17 | | struct DeprecatedFlyStringImplTraits : public Traits<StringImpl const*> { |
18 | 119k | static unsigned hash(StringImpl const* s) { return s->hash(); } |
19 | | static bool equals(StringImpl const* a, StringImpl const* b) |
20 | 86.3k | { |
21 | 86.3k | return *a == *b; |
22 | 86.3k | } |
23 | | }; |
24 | | |
25 | | static Singleton<HashTable<StringImpl const*, DeprecatedFlyStringImplTraits>> s_table; |
26 | | |
27 | | static HashTable<StringImpl const*, DeprecatedFlyStringImplTraits>& fly_impls() |
28 | 2.02M | { |
29 | 2.02M | return *s_table; |
30 | 2.02M | } |
31 | | |
32 | | void DeprecatedFlyString::did_destroy_impl(Badge<StringImpl>, StringImpl& impl) |
33 | 38.5k | { |
34 | 38.5k | fly_impls().remove(&impl); |
35 | 38.5k | } |
36 | | |
37 | | DeprecatedFlyString::DeprecatedFlyString(ByteString const& string) |
38 | 49.6k | : m_impl(string.impl()) |
39 | 49.6k | { |
40 | 49.6k | if (string.impl()->is_fly()) |
41 | 10.7k | return; |
42 | | |
43 | 38.8k | auto it = fly_impls().find(string.impl()); |
44 | 38.8k | if (it == fly_impls().end()) { |
45 | 38.2k | fly_impls().set(string.impl()); |
46 | 38.2k | string.impl()->set_fly({}, true); |
47 | 38.2k | m_impl = string.impl(); |
48 | 38.2k | } else { |
49 | 575 | VERIFY((*it)->is_fly()); |
50 | 575 | m_impl = **it; |
51 | 575 | } |
52 | 38.8k | } |
53 | | |
54 | | DeprecatedFlyString::DeprecatedFlyString(StringView string) |
55 | 935k | : m_impl(StringImpl::the_empty_stringimpl()) |
56 | 935k | { |
57 | 935k | if (string.is_null()) |
58 | 0 | return; |
59 | 1.24M | auto it = fly_impls().find(string.hash(), [&](auto& candidate) { |
60 | 1.24M | return string == *candidate; |
61 | 1.24M | }); |
62 | 935k | if (it == fly_impls().end()) { |
63 | 835 | auto new_string = string.to_byte_string(); |
64 | 835 | fly_impls().set(new_string.impl()); |
65 | 835 | new_string.impl()->set_fly({}, true); |
66 | 835 | m_impl = new_string.impl(); |
67 | 934k | } else { |
68 | 934k | VERIFY((*it)->is_fly()); |
69 | 934k | m_impl = **it; |
70 | 934k | } |
71 | 935k | } |
72 | | |
73 | | bool DeprecatedFlyString::equals_ignoring_ascii_case(StringView other) const |
74 | 0 | { |
75 | 0 | return StringUtils::equals_ignoring_ascii_case(view(), other); |
76 | 0 | } |
77 | | |
78 | | bool DeprecatedFlyString::starts_with(StringView str, CaseSensitivity case_sensitivity) const |
79 | 0 | { |
80 | 0 | return StringUtils::starts_with(view(), str, case_sensitivity); |
81 | 0 | } |
82 | | |
83 | | bool DeprecatedFlyString::ends_with(StringView str, CaseSensitivity case_sensitivity) const |
84 | 0 | { |
85 | 0 | return StringUtils::ends_with(view(), str, case_sensitivity); |
86 | 0 | } |
87 | | |
88 | | DeprecatedFlyString DeprecatedFlyString::to_lowercase() const |
89 | 0 | { |
90 | 0 | return ByteString(*m_impl).to_lowercase(); |
91 | 0 | } |
92 | | |
93 | | bool DeprecatedFlyString::operator==(ByteString const& other) const |
94 | 0 | { |
95 | 0 | return m_impl == other.impl() || view() == other.view(); |
96 | 0 | } |
97 | | |
98 | | bool DeprecatedFlyString::operator==(StringView string) const |
99 | 946k | { |
100 | 946k | return view() == string; |
101 | 946k | } |
102 | | |
103 | | bool DeprecatedFlyString::operator==(char const* string) const |
104 | 0 | { |
105 | 0 | return view() == string; |
106 | 0 | } |
107 | | |
108 | | } |