QChar: mark even more functions constexpr

These differ from the functions already marked constexpr in that
they contain subexpressions that are not constexpr. This is fine
according to the standard as long as there's _one_ set of arguments
that yield a Core Constant Expression (paraphrased from N3797
[dcl.constexpr]/5, C++11 contains similar wording), but maybe not
for some compilers, so collect these in a separate change.

Change-Id: If834232fd83059fce7c44d16b71e7d08ef79de65
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 24 insertions, 24 deletions

diff --git a/src/corelib/tools/qchar.h b/src/corelib/tools/qchar.h
index 839d191265..547c1ffda2 100644
--- a/src/corelib/tools/qchar.h
+++ b/src/corelib/tools/qchar.h
@@ -394,17 +394,17 @@ public:
     Q_DECL_CONSTEXPR inline bool isNull() const { return ucs == 0; }
 
     inline bool isPrint() const { return QChar::isPrint(ucs); }
-    inline bool isSpace() const { return QChar::isSpace(ucs); }
+    Q_DECL_CONSTEXPR inline bool isSpace() const { return QChar::isSpace(ucs); }
     inline bool isMark() const { return QChar::isMark(ucs); }
     inline bool isPunct() const { return QChar::isPunct(ucs); }
     inline bool isSymbol() const { return QChar::isSymbol(ucs); }
-    inline bool isLetter() const { return QChar::isLetter(ucs); }
-    inline bool isNumber() const { return QChar::isNumber(ucs); }
-    inline bool isLetterOrNumber() const { return QChar::isLetterOrNumber(ucs); }
-    inline bool isDigit() const { return QChar::isDigit(ucs); }
-    inline bool isLower() const { return QChar::isLower(ucs); }
-    inline bool isUpper() const { return QChar::isUpper(ucs); }
-    inline bool isTitleCase() const { return QChar::isTitleCase(ucs); }
+    Q_DECL_CONSTEXPR inline bool isLetter() const { return QChar::isLetter(ucs); }
+    Q_DECL_CONSTEXPR inline bool isNumber() const { return QChar::isNumber(ucs); }
+    Q_DECL_CONSTEXPR inline bool isLetterOrNumber() const { return QChar::isLetterOrNumber(ucs); }
+    Q_DECL_CONSTEXPR inline bool isDigit() const { return QChar::isDigit(ucs); }
+    Q_DECL_CONSTEXPR inline bool isLower() const { return QChar::isLower(ucs); }
+    Q_DECL_CONSTEXPR inline bool isUpper() const { return QChar::isUpper(ucs); }
+    Q_DECL_CONSTEXPR inline bool isTitleCase() const { return QChar::isTitleCase(ucs); }
 
     Q_DECL_CONSTEXPR inline bool isNonCharacter() const { return QChar::isNonCharacter(ucs); }
     Q_DECL_CONSTEXPR inline bool isHighSurrogate() const { return QChar::isHighSurrogate(ucs); }
@@ -480,17 +480,17 @@ public:
     static UnicodeVersion QT_FASTCALL currentUnicodeVersion() Q_DECL_CONST_FUNCTION;
 
     static bool QT_FASTCALL isPrint(uint ucs4) Q_DECL_CONST_FUNCTION;
-    static inline bool isSpace(uint ucs4) Q_DECL_CONST_FUNCTION;
+    static Q_DECL_CONSTEXPR inline bool isSpace(uint ucs4) Q_DECL_CONST_FUNCTION;
     static bool QT_FASTCALL isMark(uint ucs4) Q_DECL_CONST_FUNCTION;
     static bool QT_FASTCALL isPunct(uint ucs4) Q_DECL_CONST_FUNCTION;
     static bool QT_FASTCALL isSymbol(uint ucs4) Q_DECL_CONST_FUNCTION;
-    static inline bool isLetter(uint ucs4) Q_DECL_CONST_FUNCTION;
-    static inline bool isNumber(uint ucs4) Q_DECL_CONST_FUNCTION;
-    static inline bool isLetterOrNumber(uint ucs4) Q_DECL_CONST_FUNCTION;
-    static inline bool isDigit(uint ucs4) Q_DECL_CONST_FUNCTION;
-    static inline bool isLower(uint ucs4) Q_DECL_CONST_FUNCTION;
-    static inline bool isUpper(uint ucs4) Q_DECL_CONST_FUNCTION;
-    static inline bool isTitleCase(uint ucs4) Q_DECL_CONST_FUNCTION;
+    static Q_DECL_CONSTEXPR inline bool isLetter(uint ucs4) Q_DECL_CONST_FUNCTION;
+    static Q_DECL_CONSTEXPR inline bool isNumber(uint ucs4) Q_DECL_CONST_FUNCTION;
+    static Q_DECL_CONSTEXPR inline bool isLetterOrNumber(uint ucs4) Q_DECL_CONST_FUNCTION;
+    static Q_DECL_CONSTEXPR inline bool isDigit(uint ucs4) Q_DECL_CONST_FUNCTION;
+    static Q_DECL_CONSTEXPR inline bool isLower(uint ucs4) Q_DECL_CONST_FUNCTION;
+    static Q_DECL_CONSTEXPR inline bool isUpper(uint ucs4) Q_DECL_CONST_FUNCTION;
+    static Q_DECL_CONSTEXPR inline bool isTitleCase(uint ucs4) Q_DECL_CONST_FUNCTION;
 
 private:
     static bool QT_FASTCALL isSpace_helper(uint ucs4) Q_DECL_CONST_FUNCTION;
@@ -518,32 +518,32 @@ inline void QChar::setCell(uchar acell)
 inline void QChar::setRow(uchar arow)
 { ucs = ushort((ushort(arow)<<8) + (ucs&0xff)); }
 
-inline bool QChar::isSpace(uint ucs4)
+Q_DECL_CONSTEXPR inline bool QChar::isSpace(uint ucs4)
 {
     // note that [0x09..0x0d] + 0x85 are exceptional Cc-s and must be handled explicitly
     return ucs4 == 0x20 || (ucs4 <= 0x0d && ucs4 >= 0x09)
             || (ucs4 > 127 && (ucs4 == 0x85 || ucs4 == 0xa0 || QChar::isSpace_helper(ucs4)));
 }
-inline bool QChar::isLetter(uint ucs4)
+Q_DECL_CONSTEXPR inline bool QChar::isLetter(uint ucs4)
 {
     return (ucs4 >= 'A' && ucs4 <= 'z' && (ucs4 >= 'a' || ucs4 <= 'Z'))
             || (ucs4 > 127 && QChar::isLetter_helper(ucs4));
 }
-inline bool QChar::isNumber(uint ucs4)
+Q_DECL_CONSTEXPR inline bool QChar::isNumber(uint ucs4)
 { return (ucs4 <= '9' && ucs4 >= '0') || (ucs4 > 127 && QChar::isNumber_helper(ucs4)); }
-inline bool QChar::isLetterOrNumber(uint ucs4)
+Q_DECL_CONSTEXPR inline bool QChar::isLetterOrNumber(uint ucs4)
 {
     return (ucs4 >= 'A' && ucs4 <= 'z' && (ucs4 >= 'a' || ucs4 <= 'Z'))
             || (ucs4 >= '0' && ucs4 <= '9')
             || (ucs4 > 127 && QChar::isLetterOrNumber_helper(ucs4));
 }
-inline bool QChar::isDigit(uint ucs4)
+Q_DECL_CONSTEXPR inline bool QChar::isDigit(uint ucs4)
 { return (ucs4 <= '9' && ucs4 >= '0') || (ucs4 > 127 && QChar::category(ucs4) == Number_DecimalDigit); }
-inline bool QChar::isLower(uint ucs4)
+Q_DECL_CONSTEXPR inline bool QChar::isLower(uint ucs4)
 { return (ucs4 <= 'z' && ucs4 >= 'a') || (ucs4 > 127 && QChar::category(ucs4) == Letter_Lowercase); }
-inline bool QChar::isUpper(uint ucs4)
+Q_DECL_CONSTEXPR inline bool QChar::isUpper(uint ucs4)
 { return (ucs4 <= 'Z' && ucs4 >= 'A') || (ucs4 > 127 && QChar::category(ucs4) == Letter_Uppercase); }
-inline bool QChar::isTitleCase(uint ucs4)
+Q_DECL_CONSTEXPR inline bool QChar::isTitleCase(uint ucs4)
 { return ucs4 > 127 && QChar::category(ucs4) == Letter_Titlecase; }
 
 Q_DECL_CONSTEXPR inline bool operator==(QChar c1, QChar c2) { return c1.ucs == c2.ucs; }