openrs2
/
jode
0
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

made new abstract class ReferenceType

Browse Source 
git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@417 379699f6-c40d-0410-875b-85095c16579e
stable
jochen 26 years ago
parent badfd86844
commit af995a7761
4 changed files with 81 additions and 157 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 46
      jode/jode/type/ArrayType.java
  2. 92
      jode/jode/type/ClassInterfacesType.java
  3. 54
      jode/jode/type/NullType.java
  4. 46
      jode/jode/type/RangeType.java

46
jode/jode/type/ArrayType.java
Unescape View File

@ -25,7 +25,7 @@ import java.util.Vector;
*
* @author Jochen Hoenicke
*/
public class ArrayType extends ClassInterfacesType {
public class ArrayType extends ReferenceType {
// The interfaces that an array implements:
final static ClassInfo[] arrayIfaces = {
// Make sure to list all interfaces, even if some interface
@ -37,7 +37,7 @@ public class ArrayType extends ClassInterfacesType {
Type elementType;
public ArrayType(Type elementType) {
super(null, arrayIfaces);
super(TC_ARRAY);
typecode = TC_ARRAY;
this.elementType = elementType;
}
@ -47,22 +47,14 @@ public class ArrayType extends ClassInterfacesType {
}
public Type getSuperType() {
return tRange(tObject, (ClassInterfacesType)
tArray(elementType.getSuperType()));
return tRange(tObject,
(ReferenceType) tArray(elementType.getSuperType()));
}
public Type getSubType() {
return tArray(elementType.getSubType());
}
// public Type getBottom() {
// return tArray(elementType.getBottom());
// }
// public Type getTop() {
// return tArray(elementType.getTop());
// }
public Type getHint() {
return tArray(elementType.getHint());
}
@ -72,7 +64,7 @@ public class ArrayType extends ClassInterfacesType {
* @param bottomType the start point of the range
* @return the range type, or tError if not possible.
*/
public Type createRangeType(ClassInterfacesType bottom) {
public Type createRangeType(ReferenceType bottom) {
/*
* tArray(y), tArray(x) -> tArray( y.intersection(x) )
* obj , tArray(x) -> <obj, tArray(x)>
@ -83,9 +75,10 @@ public class ArrayType extends ClassInterfacesType {
(((ArrayType)bottom).elementType));
if (bottom.getTypeCode() == TC_CLASS) {
if (bottom.clazz == null
&& implementsAllIfaces(bottom.ifaces))
return tRange(bottom, this);
ClassInterfacesType bottomCIT = (ClassInterfacesType)bottom;
if (bottomCIT.clazz == null
&& implementsAllIfaces(null, arrayIfaces, bottomCIT.ifaces))
return tRange(bottomCIT, this);
}
return tError;
}
@ -113,7 +106,7 @@ public class ArrayType extends ClassInterfacesType {
if (type.getTypeCode() == TC_CLASS) {
ClassInterfacesType other = (ClassInterfacesType) type;
if (other.clazz == null
&& implementsAllIfaces(other.ifaces))
&& implementsAllIfaces(null, arrayIfaces, other.ifaces))
return this;
}
return tError;
@ -126,7 +119,7 @@ public class ArrayType extends ClassInterfacesType {
*/
public Type getGeneralizedType(Type type) {
/* tArray(x), tNull -> tArray(x)
* tArray(x), tClass(y) -> tObject, ifaces of tArray and tClass
* tArray(x), tClass(y) -> common ifaces of tArray and tClass
* tArray(x), tArray(y) -> tArray(x.intersection(y))
* tArray(x), other -> tError
*/
@ -140,9 +133,10 @@ public class ArrayType extends ClassInterfacesType {
(((ArrayType)type).elementType));
if (type.getTypeCode() == TC_CLASS) {
ClassInterfacesType other = (ClassInterfacesType) type;
if (other.implementsAllIfaces(ifaces))
return ClassInterfacesType.create(null, ifaces);
if (other.clazz == null && implementsAllIfaces(other.ifaces))
if (implementsAllIfaces(other.clazz, other.ifaces, arrayIfaces))
return ClassInterfacesType.create(null, arrayIfaces);
if (other.clazz == null
&& implementsAllIfaces(null, arrayIfaces, other.ifaces))
return other;
/* Now the more complicated part: find all interfaces, that are
@ -152,18 +146,18 @@ public class ArrayType extends ClassInterfacesType {
*/
Vector newIfaces = new Vector();
iface_loop:
for (int i=0; i < ifaces.length; i++) {
for (int i=0; i < arrayIfaces.length; i++) {
/* Now consider each array interface. If any clazz or
* interface in other implements it, add it to the
* newIfaces vector. */
if (other.clazz != null
&& ifaces[i].implementedBy(other.clazz)) {
newIfaces.addElement(ifaces[i]);
&& arrayIfaces[i].implementedBy(other.clazz)) {
newIfaces.addElement(arrayIfaces[i]);
continue iface_loop;
}
for (int j=0; j<other.ifaces.length; j++) {
if (ifaces[i].implementedBy(other.ifaces[j])) {
newIfaces.addElement(ifaces[i]);
if (arrayIfaces[i].implementedBy(other.ifaces[j])) {
newIfaces.addElement(arrayIfaces[i]);
continue iface_loop;
}
}

92
jode/jode/type/ClassInterfacesType.java
Unescape View File

@ -33,7 +33,7 @@ import java.util.Stack;
* the searched type.
*
* @author Jochen Hoenicke */
public class ClassInterfacesType extends Type {
public class ClassInterfacesType extends ReferenceType {
ClassInfo clazz;
ClassInfo ifaces[];
@ -73,14 +73,6 @@ public class ClassInterfacesType extends Type {
this.ifaces = ifaces;
}
public Type getSuperType() {
return (this == tObject) ? tObject : tRange(tObject, this);
}
public Type getSubType() {
return tRange(this, tNull);
}
static ClassInterfacesType create(ClassInfo clazz, ClassInfo[] ifaces) {
/* Make sure that every {java.lang.Object} equals tObject */
if (ifaces.length == 0 && clazz == null)
@ -107,14 +99,15 @@ public class ClassInterfacesType extends Type {
* @param bottom the start point of the range
* @return the range type, or tError if range is empty.
*/
public Type createRangeType(ClassInterfacesType bottom) {
public Type createRangeType(ReferenceType bottomType) {
if (bottomType.typecode != TC_CLASS)
return tError;
ClassInterfacesType bottom = (ClassInterfacesType) bottomType;
if (bottom == tObject)
if (bottomType == tObject)
return (this == tObject) ? tObject : tRange(tObject, this);
if (bottom.typecode != TC_CLASS)
return tError;
if (bottom.clazz != null) {
/* The searched type must be a class type.
*/
@ -186,21 +179,6 @@ public class ClassInterfacesType extends Type {
return tRange(bottom, create(clazz, ifaces));
}
}
protected boolean implementsAllIfaces(ClassInfo[] otherIfaces) {
big:
for (int i=0; i < otherIfaces.length; i++) {
ClassInfo iface = otherIfaces[i];
if (clazz != null && iface.implementedBy(clazz))
continue big;
for (int j=0; j < this.ifaces.length; j++) {
if (iface.implementedBy(ifaces[j]))
continue big;
}
return false;
}
return true;
}
/**
* Returns the specialized type of this and type.
@ -244,10 +222,11 @@ public class ClassInterfacesType extends Type {
* class where at one intersection this doesn't succeed)
*/
if (clazz == this.clazz
&& implementsAllIfaces(other.ifaces))
&& implementsAllIfaces(this.clazz, this.ifaces, other.ifaces))
return this;
else if (clazz == other.clazz
&& other.implementsAllIfaces(this.ifaces))
&& implementsAllIfaces(other.clazz, other.ifaces,
this.ifaces))
return other;
/* The interfaces are simply the union of both interfaces set.
@ -333,10 +312,10 @@ public class ClassInterfacesType extends Type {
}
if (clazz == this.clazz
&& other.implementsAllIfaces(this.ifaces))
&& implementsAllIfaces(other.clazz, other.ifaces, this.ifaces))
return this;
else if (clazz == other.clazz
&& this.implementsAllIfaces(other.ifaces))
&& implementsAllIfaces(this.clazz, this.ifaces, other.ifaces))
return other;
/* Now the more complicated part: find all interfaces, that are
@ -523,51 +502,4 @@ public class ClassInterfacesType extends Type {
}
return false;
}
/**
* Intersect this type with another type and return the new type.
* @param type the other type.
* @return the intersection, or tError, if a type conflict happens.
*/
public Type intersection(Type type) {
if (type == tError)
return type;
if (type == Type.tUnknown)
return this;
ClassInterfacesType top, bottom;
// if (type instanceof RangeType) {
// top = ((RangeType)type).getTop();
// bottom = ((RangeType)type).getBottom();
// } else if (type instanceof ClassInterfacesType) {
// top = bottom = (ClassInterfacesType) type;
// } else {
// Decompiler.err.println("intersecting "+ this +" and "+ type
// + " to <error>");
// if (Decompiler.isTypeDebugging)
// throw new AssertError("type error");
// return tError;
// }
Type newBottom = getSpecializedType(type);
Type newTop = getGeneralizedType(type);
Type result;
if (newTop.equals(newBottom))
result = newTop;
else if (newTop instanceof ClassInterfacesType
&& newBottom instanceof ClassInterfacesType)
result = ((ClassInterfacesType) newTop)
.createRangeType((ClassInterfacesType) newBottom);
else
result = tError;
if (result == tError) {
Decompiler.err.println("intersecting "+ this +" and "+ type
+ " to <" + newBottom + "," + newTop + ">"
+ " to <error>");
} else if (Decompiler.isTypeDebugging) {
Decompiler.err.println("intersecting "+ this +" and "+ type +
" to " + result);
}
return result;
}
}

54
jode/jode/type/NullType.java
Unescape View File

@ -1,11 +1,39 @@
/* ReferenceType Copyright (C) 1997-1998 Jochen Hoenicke.
*
* This program 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 2, or (at your option)
* any later version.
*
* This program 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 this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package jode;
public class NullType extends ClassInterfacesType {
/**
* This class represents the NullType. The null type is special as it
* may only occur as top type in a range type. It represents the type
* of the null constant, which may be casted to any object. <br>
*
* Question: Should we replace tUObject = tRange(tObject, tNull) by tNull?
* Question2: if not, should null have type tNull?
*
* @author Jochen Hoenicke
*/
public class NullType extends ReferenceType {
public NullType() {
super(null, null);
typecode = TC_NULL;
super(TC_NULL);
}
public Type createRangeType(ClassInterfacesType bottomType) {
public Type createRangeType(ReferenceType bottomType) {
return tRange(bottomType, this);
}
@ -14,12 +42,14 @@ public class NullType extends ClassInterfacesType {
* classes and multiple interfaces. The result should be the
* object that is the the super class of both objects and all
* interfaces, that one class or interface of each type
* implements. */
* implements.
*/
public Type getGeneralizedType(Type type) {
if (type.typecode == TC_RANGE)
type = ((RangeType) type).getTop();
return type;
}
/**
* Returns the specialized type of this and type.
* We have two classes and multiple interfaces. The result
@ -32,24 +62,10 @@ public class NullType extends ClassInterfacesType {
return type;
}
/**
* Marks this type as used, so that the class is imported.
*/
public void useType() {
}
public String toString() {
return "/*NULL*/" + env.classString("java.lang.Object");
}
public boolean equals(Object o) {
return o == this;
}
public Type getHint() {
return tNull;
}
/**
* Intersect this type with another type and return the new type.
* @param type the other type.

46
jode/jode/type/RangeType.java
Unescape View File

@ -36,37 +36,22 @@ import java.util.Hashtable;
* @date 98/08/06
*/
public class RangeType extends Type {
final ClassInterfacesType bottomType;
final ClassInterfacesType topType;
// final Type hintType;
// public RangeType(Type bottomType, Type topType, Type hintType) {
// super(TC_RANGE);
// if (bottom.typecode == TC_RANGE
// || top.typecode == TC_RANGE)
// throw new AssertError("tRange("+bottom+","+top+")");
// if (top.typecode == TC_UNKNOWN)
// throw new AssertError("tRange(tUnknown, "+top+")");
// this.bottomType = bottomType;
// this.topType = topType;
// this.hintType = hintType;
// }
public RangeType(ClassInterfacesType bottomType,
ClassInterfacesType topType) {
final ReferenceType bottomType;
final ReferenceType topType;
public RangeType(ReferenceType bottomType,
ReferenceType topType) {
super(TC_RANGE);
if (bottomType == tNull)
throw new jode.AssertError("bottom is NULL");
this.bottomType = bottomType;
this.topType = topType;
// this.hintType = bottomType.isValidType() ? bottomType : topType;
}
public ClassInterfacesType getBottom() {
public ReferenceType getBottom() {
return bottomType;
}
public ClassInterfacesType getTop() {
public ReferenceType getTop() {
return topType;
}
@ -88,7 +73,7 @@ public class RangeType extends Type {
// * @param bottomType the start point of the range
// * @return the range type, or tError if not possible.
// */
// public ClassInterfacesType createRangeType(ClassInterfacesType bottomType) {
// public ReferenceType createRangeType(ReferenceType bottomType) {
// throw new AssertError("createRangeType called on RangeType");
// }
@ -97,7 +82,7 @@ public class RangeType extends Type {
// * @param type the other type.
// * @return the common sub type.
// */
// public ClassInterfacesType getSpecializedType(ClassInterfacesType type) {
// public ReferenceType getSpecializedType(ReferenceType type) {
// throw new AssertError("getSpecializedType called on RangeType");
// }
@ -178,21 +163,18 @@ public class RangeType extends Type {
bottom = bottomType.getSpecializedType(type);
if (top.equals(bottom))
result = top;
else if (top instanceof ClassInterfacesType
&& bottom instanceof ClassInterfacesType)
result = ((ClassInterfacesType)top)
.createRangeType((ClassInterfacesType)bottom);
else if (top instanceof ReferenceType
&& bottom instanceof ReferenceType)
result = ((ReferenceType)top)
.createRangeType((ReferenceType)bottom);
else
result = tError;
if (result == tError) {
Decompiler.err.println("intersecting "+ this +" and "+ type
+ " to <" + bottom + "," + top + ">"
+ " to <error>");
} else if (Decompiler.isTypeDebugging) {
if (Decompiler.isTypeDebugging) {
Decompiler.err.println("intersecting "+ this +" and "+ type +
" to " + result);
}
return result;
}
}

Write Preview
Loading…
Cancel
Save