com.google.common.base.Ascii#isLowerCase ( )源码实例Demo

/**
 * Rebuild the identifier with the {@link #IDENTIFIER_PREFIX} if the identifier starts with an invalid character per the Jexl IDENTIFIER definition
 * 
 * @param fieldName
 * @param includeGroupingContext
 * @return
 */
public static String rebuildIdentifier(String fieldName, Boolean includeGroupingContext) {
    // fieldName may be null if it is from a Function node
    if (fieldName != null && fieldName.length() > 1) {
        if (!includeGroupingContext) {
            fieldName = removeGroupingContext(fieldName);
        }
        
        Character firstChar = fieldName.charAt(0);
        
        // Accepted first character in an identifier given the Commons-Jexl-2.1.1 IDENTIFIER definition
        if (!Ascii.isLowerCase(firstChar) && !Ascii.isUpperCase(firstChar) && firstChar != '_' && firstChar != '$' && firstChar != '@') {
            return IDENTIFIER_PREFIX + fieldName;
        }
    }
    
    return fieldName;
}
 

private static boolean shouldDisableFor(Reporter reporter, Element element) {
  while (element != null) {
    if (element.getKind() == ElementKind.PACKAGE) {
      for (String segment : DOT_SPLITTER.split(((PackageElement) element).getQualifiedName())) {
        if (!segment.isEmpty() && Ascii.isUpperCase(segment.charAt(0))) {
          reporter.warning(About.INCOMPAT, WARNING_START + " uppercase package names");
          return true;
        }
      }
    }
    if (element.getKind().isClass() || element.getKind().isInterface()) {
      if (Ascii.isLowerCase(element.getSimpleName().charAt(0))) {
        reporter.warning(About.INCOMPAT, WARNING_START + " lowercase class names");
        return true;
      }
    }
    element = element.getEnclosingElement();
  }
  return false;
}
 

private boolean hasLowerCase() {
  for (char c : chars) {
    if (Ascii.isLowerCase(c)) {
      return true;
    }
  }
  return false;
}
 

private boolean hasLowerCase() {
  for (char c : chars) {
    if (Ascii.isLowerCase(c)) {
      return true;
    }
  }
  return false;
}
 

private boolean hasLowerCase() {
  for (char c : chars) {
    if (Ascii.isLowerCase(c)) {
      return true;
    }
  }
  return false;
}
 

private boolean hasLowerCase() {
  for (char c : chars) {
    if (Ascii.isLowerCase(c)) {
      return true;
    }
  }
  return false;
}
 

private boolean hasLowerCase() {
  for (char c : chars) {
    if (Ascii.isLowerCase(c)) {
      return true;
    }
  }
  return false;
}
 

/**
 * Returns a new {@link ClassName} instance for the given fully-qualified class name string. This
 * method assumes that the input is ASCII and follows typical Java style (lower-case package
 * names, upper-camel-case class names) and may produce incorrect results or throw
 * {@link IllegalArgumentException} otherwise. For that reason, {@link #fromClass(Class)} and
 * {@link #fromClass(Class)} should be preferred as they can correctly create {@link ClassName}
 * instances without such restrictions.
 */
public static ClassName bestGuessFromString(String classNameString) {
  checkNotNull(classNameString);
  List<String> parts = Splitter.on('.').splitToList(classNameString);
  int firstClassPartIndex = -1;
  for (int i = 0; i < parts.size(); i++) {
    String part = parts.get(i);
    checkArgument(SourceVersion.isIdentifier(part));
    char firstChar = part.charAt(0);
    if (Ascii.isLowerCase(firstChar)) {
      // looks like a package part
      if (firstClassPartIndex >= 0) {
        throw new IllegalArgumentException("couldn't make a guess for " + classNameString);
      }
    } else if (Ascii.isUpperCase(firstChar)) {
      // looks like a class part
      if (firstClassPartIndex < 0) {
        firstClassPartIndex = i;
      }
    } else {
      throw new IllegalArgumentException("couldn't make a guess for " + classNameString);
    }
  }
  int lastIndex = parts.size() - 1;
  return new ClassName(
      Joiner.on('.').join(parts.subList(0, firstClassPartIndex)),
      firstClassPartIndex == lastIndex
          ? ImmutableList.<String>of()
          : ImmutableList.copyOf(parts.subList(firstClassPartIndex, lastIndex)),
      parts.get(lastIndex));
}
 

public String apply(String input) {
  if (!input.isEmpty()) {
    if (this == CAPITALIZED && !Ascii.isUpperCase(input.charAt(0))) {
      return CaseFormat.LOWER_CAMEL.to(CaseFormat.UPPER_CAMEL, input);
    }
    if (this == LOWERIZED && !Ascii.isLowerCase(input.charAt(0))) {
      return CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, input);
    }
  }
  return input;
}
 

public static boolean isLowerCase(char c) {
    return Ascii.isLowerCase(c);
}
 

private void processMember(Element member) {
  if ((member.getKind() == ElementKind.FIELD
      || member.getKind() == ElementKind.METHOD)
      && !memberNames.add(memberPath(member))) {
    reporter.withElement(member)
        .error(
            "Duplicate member name '%s'. Encoding has limitation so that any duplicate method names are not supported,"
                + " even when allowed by JLS: methods cannot have overloads here."
                + " @Encoding.Naming annotation could be used so that actually generated methods might have the same name"
                + " if they are not conflicting as per JLS overload rules",
            member.getSimpleName());
    return;
  }

  if (member.getKind() == ElementKind.FIELD) {
    if (processField((VariableElement) member))
      return;
  }
  if (member.getKind() == ElementKind.METHOD) {
    if (!Ascii.isLowerCase(member.getSimpleName().charAt(0))) {
      reporter.withElement(member)
          .warning("Methods not starting with lowercase ascii letter might not work properly",
              member.getSimpleName());
    }
    if (processMethod((ExecutableElement) member))
      return;
  }
  if (member.getKind() == ElementKind.CLASS) {
    if (processClass((TypeElement) member))
      return;
  }
  if (member.getKind() == ElementKind.INSTANCE_INIT) {
    return;
  }

  if (member.getSimpleName().contentEquals("<init>")) {
    return;
  }

  reporter.withElement(member)
      .warning("Unrecognized encoding member '%s' will be ignored", member.getSimpleName());
}