/*
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Rhino code, released
 * May 6, 1999.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1997-1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Nick Santos
 *
 * Alternatively, the contents of this file may be used under the terms of
 * the GNU General Public License Version 2 or later (the "GPL"), in which
 * case the provisions of the GPL are applicable instead of those above. If
 * you wish to allow use of your version of this file only under the terms of
 * the GPL and not to allow others to use your version of this file under the
 * MPL, indicate your decision by deleting the provisions above and replacing
 * them with the notice and other provisions required by the GPL. If you do
 * not delete the provisions above, a recipient may use your version of this
 * file under either the MPL or the GPL.
 *
 * ***** END LICENSE BLOCK ***** */

package com.google.javascript.rhino.testing;

import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import com.google.javascript.rhino.jstype.JSType;
import com.google.javascript.rhino.jstype.SimpleSlot;
import com.google.javascript.rhino.jstype.StaticSlot;

import java.util.Map;

/**
 * A scope based on a simple hashmap.
 * @author nicksantos@google.com (Nick Santos)
 */
public class MapBasedScope extends AbstractStaticScope<JSType> {
  private final Map<String, StaticSlot<JSType>> slots = Maps.newHashMap();

  public MapBasedScope(Map<String, ? extends JSType> namesToTypes) {
    for (Map.Entry<String, ? extends JSType> entry : namesToTypes.entrySet()) {
      slots.put(
          entry.getKey(),
          new SimpleSlot(entry.getKey(), entry.getValue(), false));
    }
  }

  public static MapBasedScope emptyScope() {
    return new MapBasedScope(ImmutableMap.<String, JSType>of());
  }

  @Override
  public StaticSlot<JSType> getSlot(String name) {
    return slots.get(name);
  }
}
