112 lines
3.1 KiB
Java
112 lines
3.1 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.commons.text;
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/**
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* Commonly used implementations of {@link CharacterPredicate}. Per the interface
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* requirements, all implementations are thread safe.
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*
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* @since 1.0
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*/
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public enum CharacterPredicates implements CharacterPredicate {
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/**
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* Tests code points against {@link Character#isLetter(int)}.
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*
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* @since 1.0
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*/
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LETTERS {
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@Override
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public boolean test(final int codePoint) {
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return Character.isLetter(codePoint);
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}
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},
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/**
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* Tests code points against {@link Character#isDigit(int)}.
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*
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* @since 1.0
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*/
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DIGITS {
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@Override
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public boolean test(final int codePoint) {
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return Character.isDigit(codePoint);
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}
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},
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/**
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* Tests if the code points represents a number between 0 and 9.
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*
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* @since 1.2
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*/
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ARABIC_NUMERALS {
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@Override
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public boolean test(final int codePoint) {
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return codePoint >= '0' && codePoint <= '9';
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}
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},
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/**
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* Tests if the code points represents a letter between a and z.
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*
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* @since 1.2
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*/
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ASCII_LOWERCASE_LETTERS {
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@Override
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public boolean test(final int codePoint) {
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return codePoint >= 'a' && codePoint <= 'z';
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}
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},
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/**
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* Tests if the code points represents a letter between A and Z.
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*
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* @since 1.2
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*/
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ASCII_UPPERCASE_LETTERS {
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@Override
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public boolean test(final int codePoint) {
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return codePoint >= 'A' && codePoint <= 'Z';
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}
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},
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/**
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* Tests if the code points represents a letter between a and Z.
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*
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* @since 1.2
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*/
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ASCII_LETTERS {
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@Override
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public boolean test(final int codePoint) {
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return ASCII_LOWERCASE_LETTERS.test(codePoint) || ASCII_UPPERCASE_LETTERS.test(codePoint);
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}
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},
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/**
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* Tests if the code points represents a letter between a and Z or a number between 0 and 9.
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*
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* @since 1.2
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*/
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ASCII_ALPHA_NUMERALS {
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@Override
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public boolean test(final int codePoint) {
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return ASCII_LOWERCASE_LETTERS.test(codePoint) || ASCII_UPPERCASE_LETTERS.test(codePoint)
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|| ARABIC_NUMERALS.test(codePoint);
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}
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}
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}
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