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-rw-r--r--src/corelib/text/qchar.h19
1 files changed, 13 insertions, 6 deletions
diff --git a/src/corelib/text/qchar.h b/src/corelib/text/qchar.h
index 982abe9346..f66671e27c 100644
--- a/src/corelib/text/qchar.h
+++ b/src/corelib/text/qchar.h
@@ -101,12 +101,18 @@ public:
LastValidCodePoint = 0x10ffff
};
+#ifdef QT_IMPLICIT_QCHAR_CONSTRUCTION
+#define QCHAR_MAYBE_IMPLICIT Q_IMPLICIT
+#else
+#define QCHAR_MAYBE_IMPLICIT explicit
+#endif
+
constexpr Q_IMPLICIT QChar() noexcept : ucs(0) {}
constexpr Q_IMPLICIT QChar(ushort rc) noexcept : ucs(rc) {}
- constexpr Q_IMPLICIT QChar(uchar c, uchar r) noexcept : ucs(char16_t((r << 8) | c)) {}
+ constexpr QCHAR_MAYBE_IMPLICIT QChar(uchar c, uchar r) noexcept : ucs(char16_t((r << 8) | c)) {}
constexpr Q_IMPLICIT QChar(short rc) noexcept : ucs(char16_t(rc)) {}
- constexpr Q_IMPLICIT QChar(uint rc) noexcept : ucs(char16_t(rc & 0xffff)) {}
- constexpr Q_IMPLICIT QChar(int rc) noexcept : ucs(char16_t(rc & 0xffff)) {}
+ constexpr QCHAR_MAYBE_IMPLICIT QChar(uint rc) noexcept : ucs(char16_t(rc & 0xffff)) {}
+ constexpr QCHAR_MAYBE_IMPLICIT QChar(int rc) noexcept : ucs(char16_t(rc & 0xffff)) {}
constexpr Q_IMPLICIT QChar(SpecialCharacter s) noexcept : ucs(char16_t(s)) {} // implicit
constexpr Q_IMPLICIT QChar(QLatin1Char ch) noexcept : ucs(ch.unicode()) {} // implicit
constexpr Q_IMPLICIT QChar(char16_t ch) noexcept : ucs(ch) {} // implicit
@@ -114,18 +120,19 @@ public:
static_assert(sizeof(wchar_t) == sizeof(char16_t));
#endif
#if defined(Q_OS_WIN) || defined(Q_CLANG_QDOC)
-# if !defined(_WCHAR_T_DEFINED) || defined(_NATIVE_WCHAR_T_DEFINED)
constexpr Q_IMPLICIT QChar(wchar_t ch) noexcept : ucs(char16_t(ch)) {} // implicit
-# endif
#endif
#ifndef QT_NO_CAST_FROM_ASCII
+ // Always implicit -- allow for 'x' => QChar conversions
QT_ASCII_CAST_WARN constexpr Q_IMPLICIT QChar(char c) noexcept : ucs(uchar(c)) { }
#ifndef QT_RESTRICTED_CAST_FROM_ASCII
- QT_ASCII_CAST_WARN constexpr Q_IMPLICIT QChar(uchar c) noexcept : ucs(c) { }
+ QT_ASCII_CAST_WARN constexpr QCHAR_MAYBE_IMPLICIT QChar(uchar c) noexcept : ucs(c) { }
#endif
#endif
+#undef QCHAR_MAYBE_IMPLICIT
+
static constexpr QChar fromUcs2(char16_t c) noexcept { return QChar{c}; }
static constexpr inline auto fromUcs4(char32_t c) noexcept;