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/*
 * Copyright (c) CQSE GmbH
 *
 * 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 eu.cqse.check.framework.scanner;

import java.util.Collection;
import java.util.EnumSet;
import java.util.Objects;
import java.util.Set;

/**
 * {@link ITokenMatcher} matching on the {@link ETokenType#getTokenClass() token class} of a
 * {@link IToken#getType() token type}.
 *
 * @see ITokenMatcher#anyOfClass(ETokenType.ETokenClass...)
 * @see ITokenMatcher#anyOfClass(Collection)
 * @see ITokenMatcher#noneOfClass(ETokenType.ETokenClass...)
 * @see ITokenMatcher#noneOfClass(Collection)
 */
/* package */ class TokenClassTokenMatcher implements ITokenMatcher {

	private final Set tokenClasses = EnumSet.noneOf(ETokenType.ETokenClass.class);

	public TokenClassTokenMatcher(Collection tokenClasses) {
		this.tokenClasses.addAll(Objects.requireNonNull(tokenClasses, "tokenClasses"));
	}

	@Override
	public boolean matches(IToken token) {
		return tokenClasses.contains(token.getType().getTokenClass());
	}

	@Override
	public String humanReadable() {
		return tokenClasses.toString();
	}
}