instruction.java

脚本开发工具和源代码,用于J2me中RPG游戏的脚本开发和执行,相当好用的一套工具,并含有脚本开发工具的源代码和一个现成的游戏脚本

package scriptedit.data;

import java.io.*;
/**
 * <p>Title: Instruction</p>
 * <p>Description: 四元式指令 2006年3月29日</p>
 * <p>Copyright: CoCoMo Copyright (c) 2006</p>
 * <p>Company: 9you</p>
 * @author 郭昉
 * @version 1.2
 */

public class Instruction {
  //与FUNCTION不同，这里是虚拟机指令
  //虚拟机指令号 > 0; 异常 < 0; 0值暂定
  public static final String PUSH = "push";    //压参数: push t
  public static final String POPU = "popu";    //popu op  pop num2; pop num1; push num1 op num2;
  public static final String IF = "if";        //if t t: 跳转指令数
  public static final String JUMP = "jump";    //jump t t: 跳转指令数
  public static final String PCALL = "pcall";  //pcall t  t: 函数标识符
  public static final String CALP = "calp";    //计算 结果压栈: push t1 op t2
  public static final String BREAK = "break";  //非虚拟机指令，标识用
  public static final String RETURN = "return";
  public static final String CONTINUE = "continue"; //非虚拟机指令，标识用
  public static final String STOP = "stop";

  public static final int PUSH_ID = 1;
  public static final int POPU_ID = 2;
  public static final int IF_ID = 3;
  public static final int JUMP_ID = 4;
  public static final int PCALL_ID = 5;
  public static final int CALU_ID = 6;
  public static final int BREAK_ID = 7;
  public static final int RETURN_ID = 8;
  public static final int CONTINUE_ID = 9;
  public static final int STOP_ID = 10;

  private String name;
  private Teminal num1;
  private Teminal num2;
  private Teminal op;
  public Instruction() {
  }

  public void setName(String name) {
    this.name = name;
  }

  public String getName() {
    return name;
  }

  public void setNum1(Teminal t) {
    num1 = t;
  }

  public Teminal getNum1() {
    return num1;
  }

  public void setNum2(Teminal t) {
    num2 = t;
  }

  public Teminal getNum2() {
    return num2;
  }

  public void setOp(Teminal t) {
    op = t;
  }

  public Teminal getOp() {
    return op;
  }

  public int getID() throws IOException {
    if(name.equals(PUSH)) {
      return PUSH_ID;
    }
    else if(name.equals(POPU)) {
      return POPU_ID;
    }
    else if(name.equals(IF)) {
      return IF_ID;
    }
    else if(name.equals(JUMP)) {
      return JUMP_ID;
    }
    else if(name.equals(PCALL)) {
      return PCALL_ID;
    }
    else if(name.equals(CALP)) {
      return CALU_ID;
    }
    else if(name.equals(BREAK)) {
      return BREAK_ID;
    }
    else if(name.equals(RETURN)) {
      return RETURN_ID;
    }
    else if(name.equals(CONTINUE)) {
      return CONTINUE_ID;
    }
    else if(name.equals(STOP)) {
      return STOP_ID;
    }
    else {
      throw new IOException("Instruction's Name:" + name + " Error!");
    }
  }
}