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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef String16_h | |
| 6 #define String16_h | |
| 7 | |
| 8 #include "platform/PlatformExport.h" | |
| 9 | |
| 10 #include <cctype> | |
| 11 #include <climits> | |
| 12 #include <cstring> | |
| 13 #include <stdint.h> | |
| 14 #include <string> | |
| 15 #include <vector> | |
| 16 | |
| 17 namespace v8_inspector { | |
| 18 | |
| 19 using UChar = uint16_t; | |
| 20 | |
| 21 class String16 { | |
| 22 public: | |
| 23 static const size_t kNotFound = static_cast<size_t>(-1); | |
| 24 | |
| 25 String16() { } | |
| 26 String16(const String16& other) : m_impl(other.m_impl) { } | |
| 27 String16(const UChar* characters, size_t size) : m_impl(characters, size) {
} | |
| 28 String16(const UChar* characters) : m_impl(characters) { } | |
| 29 String16(const char* characters) : String16(characters, std::strlen(characte
rs)) { } | |
| 30 String16(const char* characters, size_t size) | |
| 31 { | |
| 32 m_impl.resize(size); | |
| 33 for (size_t i = 0; i < size; ++i) | |
| 34 m_impl[i] = characters[i]; | |
| 35 } | |
| 36 | |
| 37 static String16 fromInteger(int); | |
| 38 static String16 fromDouble(double); | |
| 39 static String16 fromDoublePrecision3(double); | |
| 40 static String16 fromDoublePrecision6(double); | |
| 41 | |
| 42 int toInteger(bool* ok = nullptr) const; | |
| 43 String16 stripWhiteSpace() const; | |
| 44 const UChar* characters16() const { return m_impl.c_str(); } | |
| 45 size_t length() const { return m_impl.length(); } | |
| 46 bool isEmpty() const { return !m_impl.length(); } | |
| 47 UChar operator[](unsigned index) const { return m_impl[index]; } | |
| 48 String16 substring(unsigned pos, unsigned len = UINT_MAX) const { return Str
ing16(m_impl.substr(pos, len)); } | |
| 49 size_t find(const String16& str, unsigned start = 0) const { return m_impl.f
ind(str.m_impl, start); } | |
| 50 size_t reverseFind(const String16& str, unsigned start = UINT_MAX) const { r
eturn m_impl.rfind(str.m_impl, start); } | |
| 51 void swap(String16& other) { m_impl.swap(other.m_impl); } | |
| 52 | |
| 53 // Convenience methods. | |
| 54 std::string utf8() const; | |
| 55 static String16 fromUTF8(const char* stringStart, size_t length); | |
| 56 | |
| 57 const std::basic_string<UChar>& impl() const { return m_impl; } | |
| 58 explicit String16(const std::basic_string<UChar>& impl) : m_impl(impl) { } | |
| 59 | |
| 60 std::size_t hash() const | |
| 61 { | |
| 62 if (!has_hash) { | |
| 63 size_t hash = 0; | |
| 64 for (size_t i = 0; i < length(); ++i) | |
| 65 hash = 31 * hash + m_impl[i]; | |
| 66 hash_code = hash; | |
| 67 has_hash = true; | |
| 68 } | |
| 69 return hash_code; | |
| 70 } | |
| 71 | |
| 72 private: | |
| 73 std::basic_string<UChar> m_impl; | |
| 74 mutable bool has_hash = false; | |
| 75 mutable std::size_t hash_code = 0; | |
| 76 }; | |
| 77 | |
| 78 inline bool operator==(const String16& a, const String16& b) { return a.impl() =
= b.impl(); } | |
| 79 inline bool operator<(const String16& a, const String16& b) { return a.impl() <
b.impl(); } | |
| 80 inline bool operator!=(const String16& a, const String16& b) { return a.impl() !
= b.impl(); } | |
| 81 inline bool operator==(const String16& a, const char* b) { return a.impl() == St
ring16(b).impl(); } | |
| 82 inline String16 operator+(const String16& a, const char* b) { return String16(a.
impl() + String16(b).impl()); } | |
| 83 inline String16 operator+(const char* a, const String16& b) { return String16(St
ring16(a).impl() + b.impl()); } | |
| 84 inline String16 operator+(const String16& a, const String16& b) { return String1
6(a.impl() + b.impl()); } | |
| 85 | |
| 86 class String16Builder { | |
| 87 public: | |
| 88 String16Builder(); | |
| 89 void append(const String16&); | |
| 90 void append(UChar); | |
| 91 void append(char); | |
| 92 void append(const UChar*, size_t); | |
| 93 void append(const char*, size_t); | |
| 94 String16 toString(); | |
| 95 void reserveCapacity(size_t); | |
| 96 | |
| 97 private: | |
| 98 std::vector<UChar> m_buffer; | |
| 99 }; | |
| 100 | |
| 101 } // namespace v8_inspector | |
| 102 | |
| 103 #if !defined(__APPLE__) || defined(_LIBCPP_VERSION) | |
| 104 | |
| 105 namespace std { | |
| 106 template<> struct hash<v8_inspector::String16> { | |
| 107 std::size_t operator()(const v8_inspector::String16& string) const | |
| 108 { | |
| 109 return string.hash(); | |
| 110 } | |
| 111 }; | |
| 112 | |
| 113 } // namespace std | |
| 114 | |
| 115 #endif // !defined(__APPLE__) || defined(_LIBCPP_VERSION) | |
| 116 | |
| 117 #endif // !defined(String16_h) | |
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