javassist.bytecode

Class StackMapTable.Shifter

java.lang.Object

javassist.bytecode.StackMapTable.Walker

javassist.bytecode.StackMapTable.Shifter

Direct Known Subclasses:

StackMapTable.SwitchShifter

Enclosing class:

StackMapTable

static class StackMapTable.Shifter
extends StackMapTable.Walker

Field Summary

Fields

Modifier and Type	Field and Description
(package private) boolean	exclusive
(package private) int	gap
(package private) int	position
private StackMapTable	stackMap
(package private) byte[]	updatedInfo
(package private) int	where

Fields inherited from class javassist.bytecode.StackMapTable.Walker

info, numOfEntries

Constructor Summary

Constructors

Constructor and Description
Shifter(StackMapTable smt, int where, int gap, boolean exclusive)

Method Summary

Modifier and Type	Method and Description
void	appendFrame(int pos, int offsetDelta, int[] tags, int[] data) Invoked if the visited frame is a append_frame.
void	chopFrame(int pos, int offsetDelta, int k) Invoked if the visited frame is a chop_frame.
void	doit()
void	fullFrame(int pos, int offsetDelta, int[] localTags, int[] localData, int[] stackTags, int[] stackData) Invoked if the visited frame is full_frame.
(package private) static byte[]	insertGap(byte[] info, int where, int gap)
void	sameFrame(int pos, int offsetDelta) Invoked if the visited frame is a same_frame or a same_frame_extended.
void	sameLocals(int pos, int offsetDelta, int stackTag, int stackData) Invoked if the visited frame is a same_locals_1_stack_item_frame or a same_locals_1_stack_item_frame_extended.
(package private) void	update(int pos, int offsetDelta)
(package private) void	update(int pos, int offsetDelta, int base, int entry)

Methods inherited from class javassist.bytecode.StackMapTable.Walker

objectOrUninitialized, parse, size, stackMapFrames

Methods inherited from class java.lang.Object

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

Field Detail

stackMap

private StackMapTable stackMap

where

int where

gap

int gap

position

int position

updatedInfo

byte[] updatedInfo

exclusive

boolean exclusive

Constructor Detail

Shifter

public Shifter(StackMapTable smt,
               int where,
               int gap,
               boolean exclusive)

Method Detail

doit

public void doit()
          throws BadBytecode

Throws:

BadBytecode

sameFrame

public void sameFrame(int pos,
                      int offsetDelta)

Description copied from class: StackMapTable.Walker

Invoked if the visited frame is a same_frame or a same_frame_extended.

Overrides:

sameFrame in class StackMapTable.Walker

Parameters:

pos - the position of this frame in the info field of attribute_info structure.

sameLocals

public void sameLocals(int pos,
                       int offsetDelta,
                       int stackTag,
                       int stackData)

Description copied from class: StackMapTable.Walker

Invoked if the visited frame is a same_locals_1_stack_item_frame or a same_locals_1_stack_item_frame_extended.

Overrides:

sameLocals in class StackMapTable.Walker

Parameters:

pos - the position.

stackTag - stack[0].tag.

stackData - stack[0].cpool_index if the tag is OBJECT, or stack[0].offset if the tag is UNINIT.

update

void update(int pos,
            int offsetDelta,
            int base,
            int entry)

insertGap

static byte[] insertGap(byte[] info,
                        int where,
                        int gap)

chopFrame

public void chopFrame(int pos,
                      int offsetDelta,
                      int k)

Description copied from class: StackMapTable.Walker

Invoked if the visited frame is a chop_frame.

Overrides:

chopFrame in class StackMapTable.Walker

Parameters:

pos - the position.

k - the k last locals are absent.

appendFrame

public void appendFrame(int pos,
                        int offsetDelta,
                        int[] tags,
                        int[] data)

Description copied from class: StackMapTable.Walker

Invoked if the visited frame is a append_frame.

Overrides:

appendFrame in class StackMapTable.Walker

Parameters:

pos - the position.

tags - locals[i].tag.

data - locals[i].cpool_index or locals[i].offset.

fullFrame

public void fullFrame(int pos,
                      int offsetDelta,
                      int[] localTags,
                      int[] localData,
                      int[] stackTags,
                      int[] stackData)

Description copied from class: StackMapTable.Walker

Invoked if the visited frame is full_frame.

Overrides:

fullFrame in class StackMapTable.Walker

Parameters:

pos - the position.

localTags - locals[i].tag

localData - locals[i].cpool_index or locals[i].offset

stackTags - stack[i].tag

stackData - stack[i].cpool_index or stack[i].offset

update

void update(int pos,
            int offsetDelta)