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