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/*
 *  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.codehaus.groovy.macro.matcher

import groovy.transform.CompileStatic
import groovy.transform.Immutable
import org.codehaus.groovy.macro.matcher.internal.AnyTokenMatch
import org.codehaus.groovy.macro.matcher.internal.ConstraintPredicate
import org.codehaus.groovy.syntax.Token

/**
 * Represents constraints in AST pattern matching.
 *
 * @since 2.5.0
 */
@CompileStatic
@Immutable(knownImmutableClasses = [ConstraintPredicate])
class MatchingConstraints {
    public final static ConstraintPredicate ANY_TOKEN = AnyTokenMatch.INSTANCE

    final Set placeholders
    final Set varargPlaceholders
    final ConstraintPredicate tokenPredicate
    final ConstraintPredicate eventually
}