proguard.dexfile.ir.ts

Class ZeroTransformer

java.lang.Object

proguard.dexfile.ir.ts.StatedTransformer

proguard.dexfile.ir.ts.ZeroTransformer

All Implemented Interfaces:

Transformer

public class ZeroTransformer
extends StatedTransformer

dex mix use as integer 0 and object null. the following code is validate in dex, but invalidate in .class

     a=0
     if x>0 goto L1
     L2: [b=phi(a,c)]
     useAsObject(b);
     c=getAnotherObject();
     goto L2:
     L1: [d=phi(a,e)]
     useAsInt(d);
     e=123
     goto L1:
 

we transform the code to

     a1=0
     a=0
     if x>0 goto L1
     a2=0
     L2: [b=phi(a1,c)]
     useAsObject(b);
     c=getAnotherObject();
     goto L2:
     L1: [d=phi(a,e)]
     useAsInt(d);
     e=123
     goto L1:
 

Constructor Summary

Constructors

Constructor and Description
ZeroTransformer()

Method Summary

Modifier and Type	Method and Description
boolean	transformReportChanged(IrMethod method)

Methods inherited from class proguard.dexfile.ir.ts.StatedTransformer

transform

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ZeroTransformer

public ZeroTransformer()

Method Detail

transformReportChanged

public boolean transformReportChanged(IrMethod method)

Specified by:

transformReportChanged in class StatedTransformer