gecko-dev/xpcom/base/JSONStringWriteFuncs.h

53 строки
1.5 KiB
C++

/* -*- 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 JSONSTRINGWRITEFUNCS_H
#define JSONSTRINGWRITEFUNCS_H
#include "mozilla/JSONWriter.h"
#include "nsString.h"
#include <type_traits>
namespace mozilla {
// JSONWriteFunc that writes to an owned string.
template <typename StringType>
class JSONStringWriteFunc final : public JSONWriteFunc {
static_assert(
!std::is_reference_v<StringType>,
"Use JSONStringRefWriteFunc instead to write to a referenced string");
public:
JSONStringWriteFunc() = default;
void Write(const Span<const char>& aStr) final { mString.Append(aStr); }
const StringType& StringCRef() const { return mString; }
StringType&& StringRRef() && { return std::move(mString); }
private:
StringType mString;
};
// JSONWriteFunc that writes to a given nsACString reference.
class JSONStringRefWriteFunc final : public JSONWriteFunc {
public:
MOZ_IMPLICIT JSONStringRefWriteFunc(nsACString& aString) : mString(aString) {}
void Write(const Span<const char>& aStr) final { mString.Append(aStr); }
const nsACString& StringCRef() const { return mString; }
private:
nsACString& mString;
};
} // namespace mozilla
#endif // JSONSTRINGWRITEFUNCS_H