private ClassInfo()

in google-http-client/src/main/java/com/google/api/client/util/ClassInfo.java [159:204]
43 lines of code
14 McCabe index (conditional complexity)

  private ClassInfo(Class<?> srcClass, boolean ignoreCase) {
    clazz = srcClass;
    this.ignoreCase = ignoreCase;
    Preconditions.checkArgument(
        !ignoreCase || !srcClass.isEnum(), "cannot ignore case on an enum: " + srcClass);
    // name set has a special comparator to keep null first
    TreeSet<String> nameSet = new TreeSet<String>(new Comparator<String>() {
      public int compare(String s0, String s1) {
        return s0 == s1 ? 0 : s0 == null ? -1 : s1 == null ? 1 : s0.compareTo(s1);
      }
    });
    // iterate over declared fields
    for (Field field : srcClass.getDeclaredFields()) {
      FieldInfo fieldInfo = FieldInfo.of(field);
      if (fieldInfo == null) {
        continue;
      }
      String fieldName = fieldInfo.getName();
      if (ignoreCase) {
        fieldName = fieldName.toLowerCase().intern();
      }
      FieldInfo conflictingFieldInfo = nameToFieldInfoMap.get(fieldName);
      Preconditions.checkArgument(conflictingFieldInfo == null,
          "two fields have the same %sname <%s>: %s and %s",
          ignoreCase ? "case-insensitive " : "",
          fieldName,
          field,
          conflictingFieldInfo == null ? null : conflictingFieldInfo.getField());
      nameToFieldInfoMap.put(fieldName, fieldInfo);
      nameSet.add(fieldName);
    }
    // inherit from super class and add only fields not already in nameToFieldInfoMap
    Class<?> superClass = srcClass.getSuperclass();
    if (superClass != null) {
      ClassInfo superClassInfo = ClassInfo.of(superClass, ignoreCase);
      nameSet.addAll(superClassInfo.names);
      for (Map.Entry<String, FieldInfo> e : superClassInfo.nameToFieldInfoMap.entrySet()) {
        String name = e.getKey();
        if (!nameToFieldInfoMap.containsKey(name)) {
          nameToFieldInfoMap.put(name, e.getValue());
        }
      }
    }
    names = nameSet.isEmpty() ? Collections.<String>emptyList() : Collections.unmodifiableList(
        new ArrayList<String>(nameSet));
  }