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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsString_h___
#define nsString_h___
#include <ostream>
#include "mozilla/Attributes.h"
#include "mozilla/Char16.h"
#include "nsStringFwd.h"
#include "nsAString.h"
#include "nsDependentSubstring.h"
#include "nsReadableUtils.h"
#include "nsTString.h"
static_assert(sizeof(char16_t) == 2, "size of char16_t must be 2");
static_assert(sizeof(nsString::char_type) == 2,
"size of nsString::char_type must be 2");
static_assert(nsString::char_type(-1) > nsString::char_type(0),
"nsString::char_type must be unsigned");
static_assert(sizeof(nsCString::char_type) == 1,
"size of nsCString::char_type must be 1");
static_assert(sizeof(nsTLiteralString<char>) == sizeof(nsTString<char>),
"nsLiteralCString can masquerade as nsCString, "
"so they must have identical layout");
static_assert(sizeof(nsTLiteralString<char16_t>) == sizeof(nsTString<char16_t>),
"nsTLiteralString can masquerade as nsString, "
"so they must have identical layout");
/**
* A helper class that converts a UTF-16 string to ASCII in a lossy manner
*/
class MOZ_GSL_OWNER NS_LossyConvertUTF16toASCII : public nsAutoCString {
public:
explicit NS_LossyConvertUTF16toASCII(const char16ptr_t aString) {
LossyAppendUTF16toASCII(mozilla::MakeStringSpan(aString), *this);
}
NS_LossyConvertUTF16toASCII(const char16ptr_t aString, size_t aLength) {
LossyAppendUTF16toASCII(
Substring(static_cast<const char16_t*>(aString), aLength), *this);
}
explicit NS_LossyConvertUTF16toASCII(const nsAString& aString) {
LossyAppendUTF16toASCII(aString, *this);
}
private:
// NOT TO BE IMPLEMENTED
NS_LossyConvertUTF16toASCII(char) = delete;
};
template <>
struct fmt::formatter<NS_LossyConvertUTF16toASCII, char>
: fmt::formatter<nsAutoCString, char> {};
class NS_ConvertASCIItoUTF16 : public nsAutoString {
public:
explicit NS_ConvertASCIItoUTF16(const char* aCString) {
AppendASCIItoUTF16(mozilla::MakeStringSpan(aCString), *this);
}
NS_ConvertASCIItoUTF16(const char* aCString, size_t aLength) {
AppendASCIItoUTF16(Substring(aCString, aLength), *this);
}
explicit NS_ConvertASCIItoUTF16(const nsACString& aCString) {
AppendASCIItoUTF16(aCString, *this);
}
explicit NS_ConvertASCIItoUTF16(mozilla::Span<const char> aCString) {
AppendASCIItoUTF16(aCString, *this);
}
private:
// NOT TO BE IMPLEMENTED
NS_ConvertASCIItoUTF16(char16_t) = delete;
};
template <>
struct fmt::formatter<NS_ConvertASCIItoUTF16, char16_t>
: fmt::formatter<nsAutoString, char16_t> {};
/**
* A helper class that converts a UTF-16 string to UTF-8
*/
class NS_ConvertUTF16toUTF8 : public nsAutoCString {
public:
explicit NS_ConvertUTF16toUTF8(const char16ptr_t aString) {
AppendUTF16toUTF8(mozilla::MakeStringSpan(aString), *this);
}
NS_ConvertUTF16toUTF8(const char16ptr_t aString, size_t aLength) {
AppendUTF16toUTF8(Substring(static_cast<const char16_t*>(aString), aLength),
*this);
}
explicit NS_ConvertUTF16toUTF8(const nsAString& aString) {
AppendUTF16toUTF8(aString, *this);
}
explicit NS_ConvertUTF16toUTF8(mozilla::Span<const char16_t> aString) {
AppendUTF16toUTF8(aString, *this);
}
private:
// NOT TO BE IMPLEMENTED
NS_ConvertUTF16toUTF8(char) = delete;
};
template <>
struct fmt::formatter<NS_ConvertUTF16toUTF8, char>
: fmt::formatter<nsAutoCString, char> {};
class NS_ConvertUTF8toUTF16 : public nsAutoString {
public:
explicit NS_ConvertUTF8toUTF16(const char* aCString) {
AppendUTF8toUTF16(mozilla::MakeStringSpan(aCString), *this);
}
NS_ConvertUTF8toUTF16(const char* aCString, size_t aLength) {
AppendUTF8toUTF16(Substring(aCString, aLength), *this);
}
explicit NS_ConvertUTF8toUTF16(const nsACString& aCString) {
AppendUTF8toUTF16(aCString, *this);
}
explicit NS_ConvertUTF8toUTF16(mozilla::Span<const char> aCString) {
AppendUTF8toUTF16(aCString, *this);
}
private:
// NOT TO BE IMPLEMENTED
NS_ConvertUTF8toUTF16(char16_t) = delete;
};
template <>
struct fmt::formatter<NS_ConvertUTF8toUTF16, char16_t>
: fmt::formatter<nsAutoString, char16_t> {};
/**
* Converts an integer (signed/unsigned, 32/64bit) to its decimal string
* representation and returns it as an nsAutoCString/nsAutoString.
*/
template <typename T, typename U>
nsTAutoString<T> IntToTString(const U aInt, const int aRadix = 10) {
nsTAutoString<T> string;
string.AppendInt(aInt, aRadix);
return string;
}
template <typename U>
nsAutoCString IntToCString(const U aInt, const int aRadix = 10) {
return IntToTString<char>(aInt, aRadix);
}
template <typename U>
nsAutoString IntToString(const U aInt, const int aRadix = 10) {
return IntToTString<char16_t>(aInt, aRadix);
}
// MOZ_DBG support
inline std::ostream& operator<<(std::ostream& aOut, const nsACString& aString) {
aOut.write(aString.Data(), aString.Length());
return aOut;
}
inline std::ostream& operator<<(std::ostream& aOut, const nsAString& aString) {
return aOut << NS_ConvertUTF16toUTF8(aString);
}
// the following are included/declared for backwards compatibility
#include "nsDependentString.h"
#include "nsLiteralString.h"
#include "nsPromiseFlatString.h"
#endif // !defined(nsString_h___)
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