SimpleCache.java

package jetbrains.mps.baseLanguage.textGen;

/*Generated by MPS */

import java.util.Map;
import java.util.HashMap;

public abstract class SimpleCache<K, V> {
  private Map<K, V> cache = new HashMap<K, V>();
  public SimpleCache() {
  }
  protected abstract V innerGet(K key);
  public final V get(K key) {
    if (cache.containsKey(key)) {
      return cache.get(key);
    }
    V value = innerGet(key);
    cache.put(key, value);
    return value;
  }
}