gt: 		switch (n) {
context: /* Soot - a J*va Optimization Framework
   * Copyright (C) 1997-2000 Etienne Gagnon.  All rights reserved.
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library 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
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the
   * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   * Boston, MA 02111-1307, USA.
   */
  
  /*
   * Modified by the Sable Research Group and others 1997-1999.  
   * See the 'credits' file distributed with Soot for the complete list of
   * contributors.  (Soot is distributed at http://www.sable.mcgill.ca/soot)
   */
  
  
  package soot.jimple.toolkits.typing.integer;
  
  import soot.*;
  import java.util.*;
  
  /**
   * This class encapsulates the integer type hierarchy.
   *
   * <P> This class is primarily used by the TypeResolver class, to optimize its computation.
   **/
  public class ClassHierarchy {
  	
  	public ClassHierarchy(Singletons.Global g) {
  		typeNodeMap.put(BooleanType.v(), BOOLEAN);
  		typeNodeMap.put(ByteType.v(), BYTE);
  		typeNodeMap.put(ShortType.v(), SHORT);
  		typeNodeMap.put(CharType.v(), CHAR);
  		typeNodeMap.put(IntType.v(), INT);
  	}
  
  	public static ClassHierarchy v() {
  		return G.v().soot_jimple_toolkits_typing_integer_ClassHierarchy();
  	}
  
  	public final TypeNode BOOLEAN = new TypeNode(0, BooleanType.v());
  	public final TypeNode BYTE = new TypeNode(1, ByteType.v());
  	public final TypeNode SHORT = new TypeNode(2, ShortType.v());
  	public final TypeNode CHAR = new TypeNode(3, CharType.v());
  	public final TypeNode INT = new TypeNode(4, IntType.v());
  	public final TypeNode TOP = new TypeNode(5, null);
  	public final TypeNode R0_1 = new TypeNode(6, null); // eventually becomes
  														// boolean
  	public final TypeNode R0_127 = new TypeNode(7, null); // eventually becomes
  															// byte
  	public final TypeNode R0_32767 = new TypeNode(8, null); // eventually
  															// becomes short
  
    private final boolean[][] ancestors_1 =
    {
      { false, false, false, false, false,  true, false, false, false, },
      { false, false,  true, false,  true,  true, false, false, false, },
      { false, false, false, false,  true,  true, false, false, false, },
      { false, false, false, false,  true,  true, false, false, false, },
      { false, false, false, false, false,  true, false, false, false, },
      { false, false, false, false, false, false, false, false, false, },
      {  true,  true,  true,  true,  true,  true, false,  true,  true, },
      { false,  true,  true,  true,  true,  true, false, false,  true, },
      { false, false,  true,  true,  true,  true, false, false, false, },
    };
  
    private final boolean[][] ancestors_2 =
    {
      { false,  true,  true,  true,  true, false, false,  true,  true, },
      { false, false,  true, false,  true, false, false, false, false, },
      { false, false, false, false,  true, false, false, false, false, },
      { false, false, false, false,  true, false, false, false, false, },
      { false, false, false, false, false, false, false, false, false, },
      { },
      { },
      { false,  true,  true,  true,  true, false, false, false,  true, },
      { false, false,  true,  true,  true, false, false, false, false, },
    };
  
    private final boolean[][] descendants_1 =
    {
      { false, false, false, false, false, false,  true, false, false, },
      { false, false, false, false, false, false,  true,  true, false, },
      { false,  true, false, false, false, false,  true,  true,  true, },
      { false, false, false, false, false, false,  true,  true,  true, },
      { false,  true,  true,  true, false, false,  true,  true,  true, },
      {  true,  true,  true,  true,  true, false,  true,  true,  true, },
      { false, false, false, false, false, false, false, false, false, },
      { false, false, false, false, false, false,  true, false, false, },
      { false, false, false, false, false, false,  true,  true, false, },
    };
  
    private final boolean[][] descendants_2 =
    {
      { false, false, false, false, false, false, false, false, false, },
      {  true, false, false, false, false, false, false,  true, false, },
      {  true,  true, false, false, false, false, false,  true,  true, },
      {  true, false, false, false, false, false, false,  true,  true, },
      {  true,  true,  true,  true, false, false, false,  true,  true, },
      { },
      { },
      {  true, false, false, false, false, false, false, false, false, },
      {  true, false, false, false, false, false, false,  true, false, },
    };
  
    private final TypeNode[][] lca_1 =
    {
      {  BOOLEAN,      TOP,      TOP,      TOP,      TOP,      TOP,  BOOLEAN,      TOP,      TOP, },
      {      TOP,     BYTE,    SHORT,      INT,      INT,      TOP,     BYTE,     BYTE,    SHORT, },
      {      TOP,    SHORT,    SHORT,      INT,      INT,      TOP,    SHORT,    SHORT,    SHORT, },
      {      TOP,      INT,      INT,     CHAR,      INT,      TOP,     CHAR,     CHAR,     CHAR, },
      {      TOP,      INT,      INT,      INT,      INT,      TOP,      INT,      INT,      INT, },
      {      TOP,      TOP,      TOP,      TOP,      TOP,      TOP,      TOP,      TOP,      TOP, },
      {  BOOLEAN,     BYTE,    SHORT,     CHAR,      INT,      TOP,     R0_1,   R0_127, R0_32767, },
      {      TOP,     BYTE,    SHORT,     CHAR,      INT,      TOP,   R0_127,   R0_127, R0_32767, },
      {      TOP,    SHORT,    SHORT,     CHAR,      INT,      TOP, R0_32767, R0_32767, R0_32767, },
    };
    
    private final TypeNode[][] lca_2 =
    {
      {  BOOLEAN,     BYTE,    SHORT,     CHAR,      INT,     null,     null,   R0_127, R0_32767, },
      {     BYTE,     BYTE,    SHORT,      INT,      INT,     null,     null,     BYTE,    SHORT, },
      {    SHORT,    SHORT,    SHORT,      INT,      INT,     null,     null,    SHORT,    SHORT, },
      {     CHAR,      INT,      INT,     CHAR,      INT,     null,     null,     CHAR,     CHAR, },
      {      INT,      INT,      INT,      INT,      INT,     null,     null,      INT,      INT, },
      { },
      { },
      {   R0_127,     BYTE,    SHORT,     CHAR,      INT,     null,     null,   R0_127, R0_32767, },
      { R0_32767,    SHORT,    SHORT,     CHAR,      INT,     null,     null, R0_32767, R0_32767, },
    };
    
    private final TypeNode[][] gcd_1 =
    {
      {  BOOLEAN,     R0_1,     R0_1,     R0_1,     R0_1,  BOOLEAN,     R0_1,     R0_1,     R0_1, },
      {     R0_1,     BYTE,     BYTE,   R0_127,     BYTE,     BYTE,     R0_1,   R0_127,   R0_127, },
      {     R0_1,     BYTE,    SHORT, R0_32767,    SHORT,    SHORT,     R0_1,   R0_127, R0_32767, },
      {     R0_1,   R0_127, R0_32767,     CHAR,     CHAR,     CHAR,     R0_1,   R0_127, R0_32767, },
      {     R0_1,     BYTE,    SHORT,     CHAR,      INT,      INT,     R0_1,   R0_127, R0_32767, },
      {  BOOLEAN,     BYTE,    SHORT,     CHAR,      INT,      TOP,     R0_1,   R0_127, R0_32767, },
      {     R0_1,     R0_1,     R0_1,     R0_1,     R0_1,     R0_1,     R0_1,     R0_1,     R0_1, },
      {     R0_1,   R0_127,   R0_127,   R0_127,   R0_127,   R0_127,     R0_1,   R0_127,   R0_127, },
      {     R0_1,   R0_127, R0_32767, R0_32767, R0_32767, R0_32767,     R0_1,   R0_127, R0_32767, },
    };
    
    private final TypeNode[][] gcd_2 =
    {
      {  BOOLEAN,  BOOLEAN,  BOOLEAN,  BOOLEAN,  BOOLEAN,     null,     null,  BOOLEAN,  BOOLEAN, },
      {  BOOLEAN,     BYTE,     BYTE,   R0_127,     BYTE,     null,     null,   R0_127,   R0_127, },
      {  BOOLEAN,     BYTE,    SHORT, R0_32767,    SHORT,     null,     null,   R0_127, R0_32767, },
      {  BOOLEAN,   R0_127, R0_32767,     CHAR,     CHAR,     null,     null,   R0_127, R0_32767, },
      {  BOOLEAN,     BYTE,    SHORT,     CHAR,      INT,     null,     null,   R0_127, R0_32767, },
      { },
      { },
      {  BOOLEAN,   R0_127,   R0_127,   R0_127,   R0_127,     null,     null,   R0_127,   R0_127, },
      {  BOOLEAN,   R0_127, R0_32767, R0_32767, R0_32767,     null,     null,   R0_127, R0_32767, },
    };
    
    /** Map: Type -> TypeNode **/
    private final Map<Type,TypeNode> typeNodeMap = new HashMap<Type,TypeNode>();
    
    /** Get the type node for the given type. **/
  	public TypeNode typeNode(Type type) {
  		if (type == null
  				|| !(type instanceof PrimType || type instanceof RefType)) {
  			throw new InternalTypingException(type);
  		}
  
  		TypeNode typeNode = typeNodeMap.get(type);
  
  		if (typeNode == null) {
  			throw new InternalTypingException();
  		}
  
  		return typeNode;
  	}
  
  	public boolean hasAncestor_1(int t1, int t2) {
  		return ancestors_1[t1][t2];
  	}
  
  	public boolean hasAncestor_2(int t1, int t2) {
  		return ancestors_2[t1][t2];
  	}
  
  	public boolean hasDescendant_1(int t1, int t2) {
  		return descendants_1[t1][t2];
  	}
  
  	public boolean hasDescendant_2(int t1, int t2) {
  		return descendants_2[t1][t2];
  	}
  
  	public TypeNode lca_1(int t1, int t2) {
  		return lca_1[t1][t2];
  	}
  
  	private int convert(int n) {
  