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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 nsFmtCString_h___
#define nsFmtCString_h___
#include <type_traits>
#include "fmt/format.h"
#include "fmt/xchar.h"
#include "nsString.h"
/**
* nsTFmtString lets you create a nsTString using a C++20-style format
* string. For example:
*
* NS_WARNING(nsFmtCString(FMT_STRING("Unexpected value: {}"), 13.917).get());
* NS_WARNING(nsFmtString(FMT_STRING(u"Unexpected value: {}"),
* u"weird").get());
*
* nsTFmtString has a small built-in auto-buffer. For larger strings, it
* will allocate on the heap.
*
* See also nsTSubstring::AppendFmt().
*/
template <typename T>
class nsTFmtString : public nsTAutoStringN<T, 16> {
public:
template <typename... Args>
explicit nsTFmtString(
fmt::basic_format_string<T, type_identity_t<Args>...> aFormatStr,
Args&&... aArgs) {
this->AppendFmt(aFormatStr, std::forward<Args>(aArgs)...);
}
};
template <typename Char>
struct fmt::formatter<nsTFmtString<Char>, Char>
: fmt::formatter<nsTString<Char>, Char> {};
#endif // !defined(nsFmtString_h___)
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