optimize QString::toLower()/toUpper() for special cases, step 2

from now, QUnicodeTables::specialCaseMap[] starts with a placeholder; so,
if somethingCaseSpecial is true, then somethingCaseDiff is always greater than 0

Change-Id: Ibb1870512836eee71b1521564c0745096c05b2f9
Merge-request: 70
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Reviewed-by: Olivier
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/util/unicode/main.cpp b/util/unicode/main.cpp
index 40294eba4d..4a11ec667b 100644
--- a/util/unicode/main.cpp
+++ b/util/unicode/main.cpp
@@ -476,7 +476,10 @@ static int appendToSpecialCaseMap(const QList<int> &map)
     utf16map.prepend(length);
     specialCaseMaxLen = qMax(specialCaseMaxLen, length);
 
-    int i = 0;
+    if (specialCaseMap.isEmpty())
+        specialCaseMap << 0; // placeholder
+
+    int i = 1;
     while (i < specialCaseMap.size()) {
         int n = specialCaseMap.at(i);
         if (n == length) {
@@ -2251,8 +2254,9 @@ static QByteArray createPropertyInfo()
            "}\n\n";
 
 
-    out += "static const ushort specialCaseMap[] = {";
-    int i = 0;
+    out += "static const ushort specialCaseMap[] = {\n";
+    out += "    0x0, // placeholder";
+    int i = 1;
     while (i < specialCaseMap.size()) {
         out += "\n   ";
         int n = specialCaseMap.at(i);