javassist.bytecode.stackmap

Class Liveness

java.lang.Object

javassist.bytecode.stackmap.Liveness

public class Liveness
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	localsUsage
protected static byte	READ
protected static byte	UNKNOWN
protected static byte	UPDATED
static boolean	useArgs If true, all the arguments become alive within the whole method body.

Constructor Summary

Constructors

Constructor and Description
Liveness()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	analyze(CodeIterator ci, int begin, int end)
void	compute(CodeIterator ci, TypedBlock[] blocks, int maxLocals, TypeData[] args)
protected void	readLocal(int reg)
protected void	writeLocal(int reg)

Methods inherited from class java.lang.Object

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

Field Detail

UNKNOWN

protected static final byte UNKNOWN

See Also:

Constant Field Values

READ

protected static final byte READ

See Also:

Constant Field Values

UPDATED

protected static final byte UPDATED

See Also:

Constant Field Values

localsUsage

protected byte[] localsUsage

useArgs

public static boolean useArgs

If true, all the arguments become alive within the whole method body. To correctly compute a stack map table, all the arguments must be alive (localsUsage[?] must be READ) at least in the first block.

Constructor Detail

Liveness

public Liveness()

Method Detail

compute

public void compute(CodeIterator ci,
           TypedBlock[] blocks,
           int maxLocals,
           TypeData[] args)
             throws BadBytecode

Throws:

BadBytecode

readLocal

protected final void readLocal(int reg)

writeLocal

protected final void writeLocal(int reg)

analyze

protected void analyze(CodeIterator ci,
           int begin,
           int end)
                throws BadBytecode

Throws:

BadBytecode