Revert of [inspector] Initial import of v8_inspector.

src/inspector/String16.h

-// Copyright 2016 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef V8_INSPECTOR_STRING16_H_
-#define V8_INSPECTOR_STRING16_H_
-
-#include <cctype>
-#include <climits>
-#include <cstring>
-#include <stdint.h>
-#include <string>
-#include <vector>
-
-namespace v8_inspector {
-
-using UChar = uint16_t;
-
-class String16 {
-public:
-    static const size_t kNotFound = static_cast<size_t>(-1);
-
-    String16() { }
-    String16(const String16& other) : m_impl(other.m_impl) { }
-    String16(const UChar* characters, size_t size) : m_impl(characters, size) { }
-    String16(const UChar* characters) : m_impl(characters) { }
-    String16(const char* characters) : String16(characters, std::strlen(characters)) { }
-    String16(const char* characters, size_t size)
-    {
-        m_impl.resize(size);
-        for (size_t i = 0; i < size; ++i)
-            m_impl[i] = characters[i];
-    }
-
-    static String16 fromInteger(int);
-    static String16 fromDouble(double);
-    static String16 fromDoublePrecision3(double);
-    static String16 fromDoublePrecision6(double);
-
-    int toInteger(bool* ok = nullptr) const;
-    String16 stripWhiteSpace() const;
-    const UChar* characters16() const { return m_impl.c_str(); }
-    size_t length() const { return m_impl.length(); }
-    bool isEmpty() const { return !m_impl.length(); }
-    UChar operator[](unsigned index) const { return m_impl[index]; }
-    String16 substring(unsigned pos, unsigned len = UINT_MAX) const { return String16(m_impl.substr(pos, len)); }
-    size_t find(const String16& str, unsigned start = 0) const { return m_impl.find(str.m_impl, start); }
-    size_t reverseFind(const String16& str, unsigned start = UINT_MAX) const { return m_impl.rfind(str.m_impl, start); }
-    void swap(String16& other) { m_impl.swap(other.m_impl); }
-
-    // Convenience methods.
-    std::string utf8() const;
-    static String16 fromUTF8(const char* stringStart, size_t length);
-
-    const std::basic_string<UChar>& impl() const { return m_impl; }
-    explicit String16(const std::basic_string<UChar>& impl) : m_impl(impl) { }
-
-    std::size_t hash() const
-    {
-        if (!has_hash) {
-            size_t hash = 0;
-            for (size_t i = 0; i < length(); ++i)
-                hash = 31 * hash + m_impl[i];
-            hash_code = hash;
-            has_hash = true;
-        }
-        return hash_code;
-    }
-
-private:
-    std::basic_string<UChar> m_impl;
-    mutable bool has_hash = false;
-    mutable std::size_t hash_code = 0;
-};
-
-inline bool operator==(const String16& a, const String16& b) { return a.impl() == b.impl(); }
-inline bool operator<(const String16& a, const String16& b) { return a.impl() < b.impl(); }
-inline bool operator!=(const String16& a, const String16& b) { return a.impl() != b.impl(); }
-inline bool operator==(const String16& a, const char* b) { return a.impl() == String16(b).impl(); }
-inline String16 operator+(const String16& a, const char* b) { return String16(a.impl() + String16(b).impl()); }
-inline String16 operator+(const char* a, const String16& b) { return String16(String16(a).impl() + b.impl()); }
-inline String16 operator+(const String16& a, const String16& b) { return String16(a.impl() + b.impl()); }
-
-class String16Builder {
-public:
-    String16Builder();
-    void append(const String16&);
-    void append(UChar);
-    void append(char);
-    void append(const UChar*, size_t);
-    void append(const char*, size_t);
-    String16 toString();
-    void reserveCapacity(size_t);
-
-private:
-    std::vector<UChar> m_buffer;
-};
-
-} // namespace v8_inspector
-
-#if !defined(__APPLE__) || defined(_LIBCPP_VERSION)
-
-namespace std {
-template<> struct hash<v8_inspector::String16> {
-    std::size_t operator()(const v8_inspector::String16& string) const
-    {
-        return string.hash();
-    }
-};
-
-} // namespace std
-
-#endif // !defined(__APPLE__) || defined(_LIBCPP_VERSION)
-
-#endif // V8_INSPECTOR_STRING16_H_