genbindings: change simple operator== to use infix syntax

cmd/genbindings/emitcabi.go

@@ -1026,6 +1026,14 @@ func emitBindingCpp(src *CppParsedHeader, filename string) (string, error) {
 
 			callTarget += m.CppCallTarget() + "(" + forwarding + ")"
 
+			// Qt 6.8 moved many operator== implementations from class methods
+			// into global operators.
+			// By using infix syntax, either can be called
+			if m.IsReadonlyOperator() && len(m.Parameters) == 1 {
+				operator := m.CppCallTarget()[8:]
+				callTarget = "(*self " + operator + " " + forwarding + ")"
+			}
+
 			if m.LinuxOnly {
 				ret.WriteString(fmt.Sprintf(
 					"%s %s_%s(%s) {\n"+

cmd/genbindings/intermediate.go

@@ -348,6 +348,16 @@ func (nm CppMethod) SafeMethodName() string {
 	return tmp
 }
 
+func (nm CppMethod) IsReadonlyOperator() bool {
+	targ := nm.CppCallTarget()
+	switch targ {
+	case "operator==", "operator!=",
+		"operator<", "operator<=", "operator>", "operator>=":
+		return true
+	}
+	return false
+}
+
 type CppEnumEntry struct {
 	EntryName  string
 	EntryValue string