content: package com.alibaba.qlexpress4.runtime.instruction;
  
  import com.alibaba.qlexpress4.QLOptions;
  import com.alibaba.qlexpress4.exception.ErrorReporter;
  import com.alibaba.qlexpress4.exception.QLErrorCodes;
  import com.alibaba.qlexpress4.runtime.Parameters;
  import com.alibaba.qlexpress4.runtime.QContext;
  import com.alibaba.qlexpress4.runtime.QResult;
  import com.alibaba.qlexpress4.runtime.data.DataValue;
  import com.alibaba.qlexpress4.runtime.data.convert.ObjTypeConvertor;
  import com.alibaba.qlexpress4.utils.PrintlnUtils;
  
  import java.lang.reflect.Array;
  import java.util.function.Consumer;
  
  /**
   * new int[] {1,2,3}
   * Operation: new array with init items
   * Input: ${length}
   * Output: 1
   * Author: DQinYuan
   */
  public class NewArrayInstruction extends QLInstruction {
      
      private final Class<?> clz;
      
      private final int length;
      
      public NewArrayInstruction(ErrorReporter errorReporter, Class<?> clz, int length) {
          super(errorReporter);
          this.clz = clz;
          this.length = length;
      }
      
      @Override
      public QResult execute(QContext qContext, QLOptions qlOptions) {
          if (!qlOptions.checkArrLen(length)) {
              throw errorReporter.reportFormat(QLErrorCodes.EXCEED_MAX_ARR_LENGTH.name(),
                  QLErrorCodes.EXCEED_MAX_ARR_LENGTH.getErrorMsg(),
                  length,
                  qlOptions.getMaxArrLength());
          }
          Object array = Array.newInstance(clz, length);
          Parameters initItems = qContext.pop(length);
          for (int i = 0; i < initItems.size(); i++) {
              Object initItemObj = initItems.get(i).get();
              ObjTypeConvertor.QConverted qlConvertResult = ObjTypeConvertor.cast(initItemObj, clz);
              if (!qlConvertResult.isConvertible()) {
                  throw errorReporter.reportFormat(QLErrorCodes.INCOMPATIBLE_ARRAY_ITEM_TYPE.name(),
                      QLErrorCodes.INCOMPATIBLE_ARRAY_ITEM_TYPE.getErrorMsg(),
                      i,
                      initItemObj == null ? "null" : initItemObj.getClass().getName(),
                      clz.getName());
              }
              Array.set(array, i, qlConvertResult.getConverted());
          }
          qContext.push(new DataValue(array));
          return QResult.NEXT_INSTRUCTION;
      }
      
      public Class<?> getClz() {
          return clz;
      }
      
      @Override
      public int stackInput() {
          return length;
      }
      
      @Override
      public int stackOutput() {
          return 1;
      }
      
      @Override
      public void println(int index, int depth, Consumer<String> debug) {
          PrintlnUtils.printlnByCurDepth(depth, index + ": NewArray with length " + length, debug);
      }
  }
  