content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  package jaxp.sun.org.apache.bcel.internal.generic;
  
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2001 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *    "Apache BCEL" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache BCEL", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  import jaxp.sun.org.apache.bcel.internal.Constants;
  
  /**
   * Wrapper class for push operations, which are implemented either as BIPUSH,
   * LDC or xCONST_n instructions.
   *
   * @author  <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
   */
  public final class PUSH
    implements CompoundInstruction, VariableLengthInstruction, InstructionConstants
  {
    private Instruction instruction;
  
    /**
     * This constructor also applies for values of type short, char, byte
     *
     * @param cp Constant pool
     * @param value to be pushed
     */
    public PUSH(ConstantPoolGen cp, int value) {
      if((value >= -1) && (value <= 5)) // Use ICONST_n
        instruction = INSTRUCTIONS[Constants.ICONST_0 + value];
      else if((value >= -128) && (value <= 127)) // Use BIPUSH
        instruction = new BIPUSH((byte)value);
      else if((value >= -32768) && (value <= 32767)) // Use SIPUSH
        instruction = new SIPUSH((short)value);
      else // If everything fails create a Constant pool entry
        instruction = new LDC(cp.addInteger(value));
    }
  
    /**
     * @param cp Constant pool
     * @param value to be pushed
     */
    public PUSH(ConstantPoolGen cp, boolean value) {
      instruction = INSTRUCTIONS[Constants.ICONST_0 + (value? 1 : 0)];
    }
  
    /**
     * @param cp Constant pool
     * @param value to be pushed
     */
    public PUSH(ConstantPoolGen cp, float value) {
      if(value == 0.0)
        instruction = FCONST_0;
      else if(value == 1.0)
        instruction = FCONST_1;
      else if(value == 2.0)
        instruction = FCONST_2;
      else // Create a Constant pool entry
        instruction = new LDC(cp.addFloat(value));
    }
  
    /**
     * @param cp Constant pool
     * @param value to be pushed
     */
    public PUSH(ConstantPoolGen cp, long value) {
      if(value == 0)
        instruction = LCONST_0;
      else if(value == 1)
        instruction = LCONST_1;
      else // Create a Constant pool entry
        instruction = new LDC2_W(cp.addLong(value));
    }
  
    /**
     * @param cp Constant pool
     * @param value to be pushed
     */
    public PUSH(ConstantPoolGen cp, double value) {
      if(value == 0.0)
        instruction = DCONST_0;
      else if(value == 1.0)
        instruction = DCONST_1;
      else // Create a Constant pool entry
        instruction = new LDC2_W(cp.addDouble(value));
    }
  
    /**
     * @param cp Constant pool
     * @param value to be pushed
     */
    public PUSH(ConstantPoolGen cp, String value) {
      if(value == null)
        instruction = ACONST_NULL;
      else // Create a Constant pool entry
        instruction = new LDC(cp.addString(value));
    }
  
    /**
     * @param cp Constant pool
     * @param value to be pushed
     */
    public PUSH(ConstantPoolGen cp, Number value) {
      if((value instanceof Integer) || (value instanceof Short) || (value instanceof Byte))
        instruction = new PUSH(cp, value.intValue()).instruction;
      else if(value instanceof Double)
        instruction = new PUSH(cp, value.doubleValue()).instruction;
      else if(value instanceof Float)
        instruction = new PUSH(cp, value.floatValue()).instruction;
      else if(value instanceof Long)
        instruction = new PUSH(cp, value.longValue()).instruction;
      else
        throw new ClassGenException("What's this: " + value);
    }
  
    /**
     * @param cp Constant pool
     * @param value to be pushed
     */
    public PUSH(ConstantPoolGen cp, Character value) {
      this(cp, (int)value.charValue());
    }
  
    /**
     * @param cp Constant pool
     * @param value to be pushed
     */
    public PUSH(ConstantPoolGen cp, Boolean value) {
      this(cp, value.booleanValue());
    }
  
    public final InstructionList getInstructionList() {
      return new InstructionList(instruction);
    }
  
    public final Instruction getInstruction() {
      return instruction;
    }
  
    /**
     * @return mnemonic for instruction
     */
    public String toString() {
      return instruction.toString() + " (PUSH)";
    }
  }
  