Check for C++ operators that should be 'const'

Make sure all C++ class comparison operators are const.

Change-Id: Ib4a66f2afe6c62f437dae1ecde94287d3db8442d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: David Faure <faure@kde.org>

qmake/generators/makefiledeps.h

@@ -63,10 +63,10 @@ public:
     inline const QString &real() const { return real_name; }
     const QString &local() const;
 
-    bool operator==(const QMakeLocalFileName &other) {
+    bool operator==(const QMakeLocalFileName &other) const {
         return (this->real_name == other.real_name);
     }
-    bool operator!=(const QMakeLocalFileName &other) {
+    bool operator!=(const QMakeLocalFileName &other) const {
         return !(*this == other);
     }
 };

src/corelib/mimetypes/qmimemagicrulematcher.cpp

@@ -67,7 +67,7 @@ QMimeMagicRuleMatcher::QMimeMagicRuleMatcher(const QString &mime, unsigned thePr
 {
 }
 
-bool QMimeMagicRuleMatcher::operator==(const QMimeMagicRuleMatcher &other)
+bool QMimeMagicRuleMatcher::operator==(const QMimeMagicRuleMatcher &other) const
 {
     return m_list == other.m_list &&
            m_priority == other.m_priority;

src/corelib/mimetypes/qmimemagicrulematcher_p.h

@@ -55,7 +55,7 @@ class QMimeMagicRuleMatcher
 public:
     explicit QMimeMagicRuleMatcher(const QString &mime, unsigned priority = 65535);
 
-    bool operator==(const QMimeMagicRuleMatcher &other);
+    bool operator==(const QMimeMagicRuleMatcher &other) const;
 
     void addRule(const QMimeMagicRule &rule);
     void addRules(const QList<QMimeMagicRule> &rules);

src/gui/opengl/qopenglengineshadermanager_p.h

@@ -399,7 +399,7 @@ public:
     bool                useOpacityAttribute;
     bool                usePmvMatrixAttribute;
 
-    bool operator==(const QOpenGLEngineShaderProg& other) {
+    bool operator==(const QOpenGLEngineShaderProg& other) const {
         // We don't care about the program
         return ( mainVertexShader      == other.mainVertexShader &&
                  positionVertexShader  == other.positionVertexShader &&

src/sql/kernel/qsqlerror.cpp

@@ -121,7 +121,7 @@ QSqlError& QSqlError::operator=(const QSqlError& other)
     Compare the \a other error's values to this error and returns true, if it equal.
 */
 
-bool QSqlError::operator==(const QSqlError& other)
+bool QSqlError::operator==(const QSqlError& other) const
 {
     return (errorType == other.errorType);
 }
@@ -131,7 +131,7 @@ bool QSqlError::operator==(const QSqlError& other)
     Compare the \a other error's values to this error and returns true if it is not equal.
 */
 
-bool QSqlError::operator!=(const QSqlError& other)
+bool QSqlError::operator!=(const QSqlError& other) const
 {
     return (errorType != other.errorType);
 }

src/sql/kernel/qsqlerror.h

@@ -66,8 +66,8 @@ public:
                 int number = -1);
     QSqlError(const QSqlError& other);
     QSqlError& operator=(const QSqlError& other);
-    bool operator==(const QSqlError& other);
-    bool operator!=(const QSqlError& other);
+    bool operator==(const QSqlError& other) const;
+    bool operator!=(const QSqlError& other) const;
     ~QSqlError();
 
     QString driverText() const;