/* Soot - a J*va Optimization Framework
* Copyright (C) 1997-1999 Raja Vallee-Rai
*
* 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;
import soot.util.*;
import java.io.*;
/** Represents types within Soot, eg <code>int</code>, <code>java.lang.String</code>. */
public abstract class Type implements Switchable, Serializable, Numberable
{
public Type() {
Scene.v().getTypeNumberer().add( this );
}
/** Returns a textual representation of this type. */
public abstract String toString();
/** Converts the int-like types (short, byte, boolean and char) to IntType. */
public static Type toMachineType(Type t)
{
if(t.equals(ShortType.v()) || t.equals(ByteType.v()) ||
t.equals(BooleanType.v()) || t.equals(CharType.v()))
{
return IntType.v();
}
else
return t;
}
/** Returns the least common superclass of this type and other. */
public Type merge(Type other, Scene cm)
{
// method overriden in subclasses UnknownType and RefType
throw new RuntimeException("illegal type merge: "
+ this + " and " + other);
}
/** Method required for use of Switchable. */
public void apply(Switch sw)
{
}
public void setArrayType( ArrayType at ) {
arrayType = at;
}
public ArrayType getArrayType() {
return arrayType;
}
public ArrayType makeArrayType() {
return ArrayType.v( this, 1 );
}
public final int getNumber() { return number; }
public final void setNumber( int number ) { this.number = number; }
protected ArrayType arrayType;
private int number = 0;
}