forked from mirrors/gecko-dev
42904cee2c
All JSONWriteFuncs are effectively final, this patch enforces that, hopefully helping the compiler to de-virtualize some calls. Differential Revision: https://phabricator.services.mozilla.com/D154619
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef JSONSTRINGWRITEFUNCS_H
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#define JSONSTRINGWRITEFUNCS_H
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#include "mozilla/JSONWriter.h"
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#include "nsString.h"
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#include <type_traits>
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namespace mozilla {
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// JSONWriteFunc that writes to an owned string.
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template <typename StringType>
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class JSONStringWriteFunc final : public JSONWriteFunc {
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static_assert(
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!std::is_reference_v<StringType>,
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"Use JSONStringRefWriteFunc instead to write to a referenced string");
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public:
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JSONStringWriteFunc() = default;
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void Write(const Span<const char>& aStr) final { mString.Append(aStr); }
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const StringType& StringCRef() const { return mString; }
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StringType&& StringRRef() && { return std::move(mString); }
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private:
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StringType mString;
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};
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// JSONWriteFunc that writes to a given nsACString reference.
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class JSONStringRefWriteFunc final : public JSONWriteFunc {
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public:
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MOZ_IMPLICIT JSONStringRefWriteFunc(nsACString& aString) : mString(aString) {}
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void Write(const Span<const char>& aStr) final { mString.Append(aStr); }
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const nsACString& StringCRef() const { return mString; }
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private:
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nsACString& mString;
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};
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} // namespace mozilla
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#endif // JSONSTRINGWRITEFUNCS_H
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