| /* |
| |
| Copyright (c) 2001, Dr Martin Porter |
| Copyright (c) 2002, Richard Boulton |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| |
| * Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * Neither the name of the copyright holders nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE |
| FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| */ |
| |
| package org.tartarus.snowball; |
| |
| import java.lang.invoke.MethodHandle; |
| import java.lang.invoke.MethodHandles; |
| import java.lang.invoke.MethodType; |
| import java.util.Locale; |
| |
| /** |
| * This is the rev 502 of the Snowball SVN trunk, |
| * now located at <a target="_blank" href="https://github.com/snowballstem/snowball/tree/e103b5c257383ee94a96e7fc58cab3c567bf079b">GitHub</a>, |
| * but modified: |
| * <ul> |
| * <li>made abstract and introduced abstract method stem to avoid expensive reflection in filter class. |
| * <li>refactored StringBuffers to StringBuilder |
| * <li>uses char[] as buffer instead of StringBuffer/StringBuilder |
| * <li>eq_s,eq_s_b,insert,replace_s take CharSequence like eq_v and eq_v_b |
| * <li>use MethodHandles and fix <a target="_blank" href="http://article.gmane.org/gmane.comp.search.snowball/1139">method visibility bug</a>. |
| * </ul> |
| */ |
| public final class Among { |
| |
| public Among(String s, int substring_i, int result, |
| String methodname, MethodHandles.Lookup methodobject) { |
| this.s_size = s.length(); |
| this.s = s.toCharArray(); |
| this.substring_i = substring_i; |
| this.result = result; |
| if (methodname.isEmpty()) { |
| this.method = null; |
| } else { |
| final Class<? extends SnowballProgram> clazz = methodobject.lookupClass().asSubclass(SnowballProgram.class); |
| try { |
| this.method = methodobject.findVirtual(clazz, methodname, MethodType.methodType(boolean.class)) |
| .asType(MethodType.methodType(boolean.class, SnowballProgram.class)); |
| } catch (NoSuchMethodException | IllegalAccessException e) { |
| throw new RuntimeException(String.format(Locale.ENGLISH, |
| "Snowball program '%s' is broken, cannot access method: boolean %s()", |
| clazz.getSimpleName(), methodname |
| ), e); |
| } |
| } |
| } |
| |
| final int s_size; /* search string */ |
| final char[] s; /* search string */ |
| final int substring_i; /* index to longest matching substring */ |
| final int result; /* result of the lookup */ |
| |
| // Make sure this is not accessible outside package for Java security reasons! |
| final MethodHandle method; /* method to use if substring matches */ |
| |
| } |