com.sun.jdo.api.persistence.enhancer.classfile.InsnMultiDimArrayNew Maven / Gradle / Ivy

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// Portions Copyright [2019] Payara Foundation and/or affiliates

package com.sun.jdo.api.persistence.enhancer.classfile;

import java.io.PrintStream;

/**
 * Special instruction form for the opc_multianewarray instruction
 */

public class InsnMultiDimArrayNew extends Insn {
  /* The array class for creation */
  private ConstClass classOp;

  /* The number of dimensions present on the stack */
  private int nDimsOp;

  /* public accessors */

  public boolean isSimpleLoad() {
    return false;
  }

  public int nStackArgs() {
    return nDimsOp;
  }

  public int nStackResults() {
    return 1;
  }

  /**
   * What are the types of the stack operands ?
   */
  public String argTypes() {
    StringBuilder buf = new StringBuilder();
    for (int i=0; i 0 and <= number of array dimensions for classOp
   */
  public InsnMultiDimArrayNew (ConstClass classOp, int nDimsOp) {
    this(classOp, nDimsOp, NO_OFFSET);
  }

  /* package local methods */

  InsnMultiDimArrayNew (ConstClass classOp, int nDimsOp, int offset) {
    super(opc_multianewarray, offset);

    this.classOp = classOp;
    this.nDimsOp = nDimsOp;

    if (classOp == null || nDimsOp < 1)
	throw new InsnError ("attempt to create an opc_multianewarray" +//NOI18N
			     " with invalid operands");//NOI18N
  }



  void print (PrintStream out, int indent) {
    ClassPrint.spaces(out, indent);
    out.println(offset() + "  opc_multianewarray  pool(" +//NOI18N
		classOp.getIndex() + ")," + nDimsOp);//NOI18N
  }

  int store(byte[] buf, int index) {
    buf[index++] = (byte) opcode();
    index = storeShort(buf, index, (short) classOp.getIndex());
    buf[index++] = (byte) nDimsOp;
    return index;
  }

  int size() {
    return 4;
  }

  static InsnMultiDimArrayNew read (InsnReadEnv insnEnv, int myPC) {
    ConstClass classOp = (ConstClass)
      insnEnv.pool().constantAt(insnEnv.getUShort());
    int nDims = insnEnv.getUByte();
    return new InsnMultiDimArrayNew(classOp, nDims, myPC);
  }

}