Changed C++ QrSegment::Ecc class to eliminate const from fields, updated related code.

cpp/QrCode.cpp

@@ -90,7 +90,7 @@ QrCode QrCode::encodeSegments(const vector<QrSegment> &segs, const Ecc &ecl,
 	size_t dataCapacityBits = getNumDataCodewords(version, *newEcl) * 8;
 	BitBuffer bb;
 	for (const QrSegment &seg : segs) {
-		bb.appendBits(seg.mode.modeBits, 4);
+		bb.appendBits(seg.mode.getModeBits(), 4);
 		bb.appendBits(seg.numChars, seg.mode.numCharCountBits(version));
 		bb.insert(bb.end(), seg.data.begin(), seg.data.end());
 	}

cpp/QrSegment.cpp

@@ -40,6 +40,11 @@ QrSegment::Mode::Mode(int mode, int cc0, int cc1, int cc2) :
 }
 
 
+int QrSegment::Mode::getModeBits() const {
+	return modeBits;
+}
+
+
 int QrSegment::Mode::numCharCountBits(int ver) const {
 	if      ( 1 <= ver && ver <=  9)  return numBitsCharCount[0];
 	else if (10 <= ver && ver <= 26)  return numBitsCharCount[1];

cpp/QrSegment.hpp

@@ -58,8 +58,7 @@ class QrSegment final {
 		
 		/*-- Fields --*/
 		
-		/* (Package-private) An unsigned 4-bit integer value (range 0 to 15) representing the mode indicator bits for this mode object. */
-		public: const int modeBits;
+		private: int modeBits;
 		
 		private: int numBitsCharCount[3];
 		
@@ -69,7 +68,12 @@ class QrSegment final {
 		private: Mode(int mode, int cc0, int cc1, int cc2);
 		
 		
-		/*-- Method --*/
+		/*-- Methods --*/
+		
+		/* 
+		 * (Package-private) Returns the mode indicator bits, which is an unsigned 4-bit value (range 0 to 15).
+		 */
+		public: int getModeBits() const;
 		
 		/* 
 		 * (Package-private) Returns the bit width of the segment character count field for this mode object at the given version number.