proguard.util.CollectionParser Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of proguard-core Show documentation

ProGuardCORE is a free library to read, analyze, modify, and write Java class files.

There is a newer version: 9.1.6

/*
 * ProGuardCORE -- library to process Java bytecode.
 *
 * Copyright (c) 2002-2020 Guardsquare NV
 *
 * Licensed 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 proguard.util;

import java.util.HashSet;
import java.util.List;

/**
 * This {@link StringParser} can create a {@link CollectionMatcher} instance for regular
 * expressions. The regular expressions are either presented as a list, or they are interpreted as
 * comma-separated lists. These lists should contain strings that need to be literally matched
 * meaning that wildcards, negations,... are not interpreted by the {@link StringParser}.
 */
public class CollectionParser implements StringParser {

  /**
   * Creates a new ListParser that parses individual elements in the comma-separated list with the
   * given StringParser.
   */
  public CollectionParser() {}

  // Implementations for StringParser.

  public StringMatcher parse(String regularExpression) {
    // Split the regular expression to a list and parse it.
    return parse(ListUtil.commaSeparatedList(regularExpression));
  }

  /**
   * Creates a StringMatcher for the given regular expression, which can be a list of optionally
   * negated simple entries.
   *
   * An empty list results in a StringMatcher that matches any string.
   */
  public StringMatcher parse(List regularExpressions) {
    return new CollectionMatcher(new HashSet<>(regularExpressions));
  }
}