/*
 * 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.apache.phoenix.parse;

import java.util.List;

import org.apache.phoenix.thirdparty.com.google.common.collect.Lists;

public class ParseContext {
  private boolean isAggregate;
  private boolean hasSequences;

  public ParseContext() {
  }

  public boolean isAggregate() {
    return isAggregate;
  }

  public void setAggregate(boolean isAggregate) {
    this.isAggregate |= isAggregate;
  }

  public boolean hasSequences() {
    return hasSequences;
  }

  public void hasSequences(boolean hasSequences) {
    this.hasSequences |= hasSequences;
  }

  public static class Stack {
    private final List<ParseContext> stack = Lists.newArrayListWithExpectedSize(5);

    public void push(ParseContext context) {
      stack.add(context);
    }

    public ParseContext pop() {
      return stack.remove(stack.size() - 1);
    }

    public ParseContext peek() {
      return stack.get(stack.size() - 1);
    }

    public boolean isEmpty() {
      return stack.isEmpty();
    }
  }

}
