content: /*
   * MIT License
   *
   * Copyright (c) 2018 Alibaba Group
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  package com.tmall.wireless.vaf.expr.engine.data;
  
  import java.util.LinkedList;
  import java.util.List;
  
  /**
   * Created by gujicheng on 16/12/14.
   */
  
  public class ValueCache {
      private static ValueCache sThis = null;
  
      private List<IntValue> mIntCache = new LinkedList<>();
      private List<FloatValue> mFloatCache = new LinkedList<>();
      private List<StrValue> mStrCache = new LinkedList<>();
      private List<ObjValue> mObjCache = new LinkedList<>();
  
      public static ValueCache getInstance() {
          if (null == sThis) {
              sThis = new ValueCache();
          }
  
          return sThis;
      }
  
      private ValueCache() {
      }
  
      public IntValue mallocIntValue(int v) {
          if (mIntCache.size() > 0) {
              IntValue iv = mIntCache.remove(0);
              iv.mValue = v;
              return iv;
          } else {
              return new IntValue(v);
          }
      }
  
      public void freeIntValue(IntValue v) {
          mIntCache.add(v);
      }
  
      public FloatValue mallocFloatValue(float v) {
          if (mFloatCache.size() > 0) {
              FloatValue iv = mFloatCache.remove(0);
              iv.mValue = v;
              return iv;
          } else {
              return new FloatValue(v);
          }
      }
  
      public void freeFloatValue(FloatValue v) {
          mFloatCache.add(v);
      }
  
      public StrValue mallocStrValue(String v) {
          if (mStrCache.size() > 0) {
              StrValue iv = mStrCache.remove(0);
              iv.mValue = v;
              return iv;
          } else {
              return new StrValue(v);
          }
      }
  
      public void freeStrValue(StrValue v) {
          mStrCache.add(v);
      }
  
      public ObjValue mallocObjValue(Object v) {
          if (mObjCache.size() > 0) {
              ObjValue iv = mObjCache.remove(0);
              iv.mValue = v;
              return iv;
          } else {
              return new ObjValue(v);
          }
      }
  
      public void freeObjValue(ObjValue v) {
          mObjCache.add(v);
      }
  }
  
  