protected String getCommonSuperClass()

in jvm-agent/src/main/org/jetbrains/lincheck/jvm/agent/SafeClassWriter.java [64:113]
49 lines of code
12 McCabe index (conditional complexity)

    protected String getCommonSuperClass(final String type1, final String type2) {
        try {
            ClassReader info1 = typeInfo(type1);
            ClassReader info2 = typeInfo(type2);
            if ((info1.getAccess() & Opcodes.ACC_INTERFACE) != 0) {
                if (typeImplements(type2, info2, type1)) {
                    return type1;
                } else {
                    return "java/lang/Object";
                }
            }
            if ((info2.getAccess() & Opcodes.ACC_INTERFACE) != 0) {
                if (typeImplements(type1, info1, type2)) {
                    return type2;
                } else {
                    return "java/lang/Object";
                }
            }
            StringBuilder b1 = typeAncestors(type1, info1);
            StringBuilder b2 = typeAncestors(type2, info2);
            String result = "java/lang/Object";
            int end1 = b1.length();
            int end2 = b2.length();
            while (true) {
                int start1 = b1.lastIndexOf(";", end1 - 1);
                int start2 = b2.lastIndexOf(";", end2 - 1);
                if (start1 != -1 && start2 != -1
                        && end1 - start1 == end2 - start2) {
                    String p1 = b1.substring(start1 + 1, end1);
                    String p2 = b2.substring(start2 + 1, end2);
                    if (p1.equals(p2)) {
                        result = p1;
                        end1 = start1;
                        end2 = start2;
                    } else {
                        return result;
                    }
                } else {
                    return result;
                }
            }
        } catch (IOException ignored) {
            try {
                // try to fallback to the default implementation
                return super.getCommonSuperClass(type1, type2);
            } catch (Exception e) {
                throw new RuntimeException(e.toString());
            }
        }
    }