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// 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 <stdint.h>
#include <cctype>
#include <climits>
#include <cstring>
#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) // NOLINT(runtime/explicit)
: m_impl(characters) {}
String16(const char* characters) // NOLINT(runtime/explicit)
: 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 fromInteger(size_t);
static String16 fromDouble(double);
static String16 fromDouble(double, int precision);
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[](size_t index) const { return m_impl[index]; }
String16 substring(size_t pos, size_t len = UINT_MAX) const {
return String16(m_impl.substr(pos, len));
}
size_t find(const String16& str, size_t start = 0) const {
return m_impl.find(str.m_impl, start);
}
size_t reverseFind(const String16& str, size_t 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_
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