Prototype.java :  » Graphics-3D-2D-OpenGL » e3roid » org » luaj » vm2 » Android Open Source

/*******************************************************************************
* Copyright (c) 2009 Luaj.org. All rights reserved.
*
* 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 org.luaj.vm2;



public class Prototype {
  /* constants used by the function */
  public LuaValue[] k; 
  public int[] code;
  /* functions defined inside the function */
  public Prototype[] p;
  /* map from opcodes to source lines */
  public int[] lineinfo;
  /* information about local variables */
  public LocVars[] locvars;
  /* upvalue names */
  public LuaString[] upvalues;
  public LuaString  source;
  public int nups;
  public int linedefined;
  public int lastlinedefined;
  public int numparams;
  public int is_vararg;
  public int maxstacksize;

  
  public String toString() {
    return source + ":" + linedefined+"-"+lastlinedefined;
  }
  
  /** Get the name of a local variable.
   * 
   * @param number the local variable number to look up
   * @param pc the program counter
   * @return the name, or null if not found
   */
  public LuaString getlocalname(int number, int pc) {
    int i;
    for (i = 0; i<locvars.length && locvars[i].startpc <= pc; i++) {
      if (pc < locvars[i].endpc) {  /* is variable active? */
        number--;
        if (number == 0)
          return locvars[i].varname;
      }
    }
    return null;  /* not found */
  }
}