File indexing completed on 2024-05-12 04:44:35

 // SPDX-FileCopyrightText: Lukas Sommer <sommerluk@gmail.com>
 // SPDX-License-Identifier: BSD-2-Clause OR MIT
 
 /** @internal @file staticasserts.cpp
  *
  * This file defines various static asserts for compiling this
  * library. */
 
 #include <qglobal.h>
 
 static_assert(
     // Test if the compiler treats the source code actually as UTF-8.
     // We use the character “🖌” who’s code point is U+1F58C.
     // We create a string literal in the form U"🖌" which creates a UTF-32
     // encoded Unicode string. So we expect the first code unit of this string
     // to be 0x1F58C, which is the correct UTF-32 representation. We do
     // a static_assert to control if the compiler has actually correctly
     // interpreted the source code.
     (*(U"🖌")) == 0x1F58C,
     "Compiler must use UTF-8 as input character set.\n"
     "(The source code has to be interpreted as UTF-8 by the compiler.)");
 
 static_assert(
     // Check if actually the narrow execution character set is UTF-8.
     // Character 1, first code unit
     (static_cast<quint8>(*(("🖌") + 0)) == 0xF0)
         // Character 1, second code unit
         && (static_cast<quint8>(*(("🖌") + 1)) == 0x9F)
         // Character 1, third code unit
         && (static_cast<quint8>(*(("🖌") + 2)) == 0x96)
         // Character 1, fourth code unit
         && (static_cast<quint8>(*(("🖌") + 3)) == 0x8C)
         // Character 2
         && (static_cast<quint8>(*(("🖌") + 4)) == 0x00),
     // Provide an error message:
     "Compiler must use UTF-8 as narrow execution character set.\n"
     "(char* must contain UTF-8 encoded data.)\n"
     "Example: gcc -fexec-charset=UTF-8");