package org.metricshub.jawk.intermediate;
   
   /*-
    * ╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲
    * Jawk
    * ჻჻჻჻჻჻
    * Copyright (C) 2006 - 2025 MetricsHub
    * ჻჻჻჻჻჻
    * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Lesser General Public License as
   * published by the Free Software Foundation, either version 3 of the
   * License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Lesser Public License for more details.
   *
   * You should have received a copy of the GNU General Lesser Public
   * License along with this program.  If not, see
   * <http://www.gnu.org/licenses/lgpl-3.0.html>.
   * ╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱
   */
  
  import java.io.Serializable;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * Manages creation and resolution of {@link Address} instances for
   * {@link AwkTuples}.
   */
  class AddressManager implements Serializable {
  
  	private static final long serialVersionUID = 1L;
  
  	private final Set<Address> unresolvedAddresses = new HashSet<Address>();
  	private final Map<Integer, Address> addressIndexes = new HashMap<Integer, Address>();
  	private final Map<String, Integer> addressLabelCounts = new HashMap<String, Integer>();
  
  	Address createAddress(String label) {
  		Integer count = addressLabelCounts.get(label);
  		if (count == null) {
  			count = 0;
  		} else {
  			count = count + 1;
  		}
  		addressLabelCounts.put(label, count);
  		Address address = new Address(label + "_" + count);
  		unresolvedAddresses.add(address);
  		return address;
  	}
  
  	void resolveAddress(Address address, int index) {
  		if (unresolvedAddresses.contains(address)) {
  			unresolvedAddresses.remove(address);
  			address.assignIndex(index);
  			addressIndexes.put(index, address);
  		} else {
  			throw new Error(address.toString() + " is already resolved, or unresolved from another scope.");
  		}
  	}
  
  	Address getAddress(int index) {
  		return addressIndexes.get(index);
  	}
  }