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Java example source code file (Option.java)

This example Java source code file (Option.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

dont_capture_group, extend, find_longest, find_not_empty, ignorecase, maxbit, multiline, negate_singleline, none, notbol, noteol, posix_region, singleline, string

The Option.java Java example source code

/*
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package jdk.nashorn.internal.runtime.regexp.joni;

public class Option {

    /* options */
    public static final int NONE                 = 0;
    public static final int IGNORECASE           = (1<<0);
    public static final int EXTEND               = (1<<1);
    public static final int MULTILINE            = (1<<2);
    public static final int SINGLELINE           = (1<<3);
    public static final int FIND_LONGEST         = (1<<4);
    public static final int FIND_NOT_EMPTY       = (1<<5);
    public static final int NEGATE_SINGLELINE    = (1<<6);
    public static final int DONT_CAPTURE_GROUP   = (1<<7);
    public static final int CAPTURE_GROUP        = (1<<8);

    /* options (search time) */
    public static final int NOTBOL               = (1<<9);
    public static final int NOTEOL               = (1<<10);
    public static final int POSIX_REGION         = (1<<11);
    public static final int MAXBIT               = (1<<12); /* limit */

    public static final int DEFAULT              = NONE;

    public static String toString(int option) {
        String options = "";
        if (isIgnoreCase(option)) options += "IGNORECASE ";
        if (isExtend(option)) options += "EXTEND ";
        if (isMultiline(option)) options += "MULTILINE ";
        if (isSingleline(option)) options += "SINGLELINE ";
        if (isFindLongest(option)) options += "FIND_LONGEST ";
        if (isFindNotEmpty(option)) options += "FIND_NOT_EMPTY  ";
        if (isNegateSingleline(option)) options += "NEGATE_SINGLELINE ";
        if (isDontCaptureGroup(option)) options += "DONT_CAPTURE_GROUP ";
        if (isCaptureGroup(option)) options += "CAPTURE_GROUP ";

        if (isNotBol(option)) options += "NOTBOL ";
        if (isNotEol(option)) options += "NOTEOL ";
        if (isPosixRegion(option)) options += "POSIX_REGION ";

        return options;
    }

    public static boolean isIgnoreCase(int option) {
        return (option & IGNORECASE) != 0;
    }

    public static boolean isExtend(int option) {
        return (option & EXTEND) != 0;
    }

    public static boolean isSingleline(int option) {
        return (option & SINGLELINE) != 0;
    }

    public static boolean isMultiline(int option) {
        return (option & MULTILINE) != 0;
    }

    public static boolean isFindLongest(int option) {
        return (option & FIND_LONGEST) != 0;
    }

    public static boolean isFindNotEmpty(int option) {
        return (option & FIND_NOT_EMPTY) != 0;
    }

    public static boolean isFindCondition(int option) {
        return (option & (FIND_LONGEST | FIND_NOT_EMPTY)) != 0;
    }

    public static boolean isNegateSingleline(int option) {
        return (option & NEGATE_SINGLELINE) != 0;
    }

    public static boolean isDontCaptureGroup(int option) {
        return (option & DONT_CAPTURE_GROUP) != 0;
    }

    public static boolean isCaptureGroup(int option) {
        return (option & CAPTURE_GROUP) != 0;
    }

    public static boolean isNotBol(int option) {
        return (option & NOTBOL) != 0;
    }

    public static boolean isNotEol(int option) {
        return (option & NOTEOL) != 0;
    }

    public static boolean isPosixRegion(int option) {
        return (option & POSIX_REGION) != 0;
    }

    /* OP_SET_OPTION is required for these options.  ??? */
    //    public static boolean isDynamic(int option) {
    //        return (option & (MULTILINE | IGNORECASE)) != 0;
    //    }
    public static boolean isDynamic(int option) {
        return false;
    }
}

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