Package org.jboss.classfilewriter.code

Class StackState

java.lang.Object

org.jboss.classfilewriter.code.StackState

public class StackState
extends Object

In immutable stack state, which may be shared between frames

Field Summary

Fields

Modifier and Type	Field	Description
private final ConstPool	constPool
private final List<StackEntry>	contents	The contents of the stack

Constructor Summary

Constructors

Modifier	Constructor	Description
	StackState(String exceptionType, ConstPool constPool)
private	StackState(List<StackEntry> contents, ConstPool constPool)
	StackState(ConstPool constPool)

Method Summary

Modifier and Type	Method	Description
StackState	aconstNull()
StackState	constructorCall(int initializedValueStackPosition, StackEntry entry)
StackState	dup()
StackState	dup2()
StackState	dup2X1()
StackState	dup2X2()
StackState	dupX1()
StackState	dupX2()
List<StackEntry>	getContents()
boolean	isOnTop(String descriptor)	checks that the appropriate object type is on top of the stack
private StackState	newStack(StackEntry... pushValues)
StackState	pop(int no)	pop a non-wide type from the top of the stack
StackState	push(String type)	push a type on to the top of the stack
StackState	push(StackEntry entry)	push a type on to the top of the stack
int	size()
StackState	swap()
StackEntry	top()
StackEntry	top_1()
StackEntry	top_2()
StackEntry	top_3()
String	toString()
StackState	updateMerged(int pos, StackEntry frame)

Methods inherited from class java.lang.Object

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

Field Details

contents

private final List<StackEntry> contents

The contents of the stack

This list may be shared between frames, so it must never be modified

The very first element represents the bottom of the stack, with the last element representing the top. Wide elements are stored as Wide, Top, with the StackEntryType.TOP on the top of the stack

constPool

private final ConstPool constPool

Constructor Details

StackState

public StackState(ConstPool constPool)

StackState

public StackState(String exceptionType,
 ConstPool constPool)

StackState

private StackState(List<StackEntry> contents,
 ConstPool constPool)

Method Details

isOnTop

public boolean isOnTop(String descriptor)

checks that the appropriate object type is on top of the stack

size

public int size()

push

public StackState push(String type)

push a type on to the top of the stack

push

public StackState push(StackEntry entry)

push a type on to the top of the stack

aconstNull

public StackState aconstNull()

pop

public StackState pop(int no)

pop a non-wide type from the top of the stack

dup

public StackState dup()

dupX1

public StackState dupX1()

dupX2

public StackState dupX2()

dup2

public StackState dup2()

dup2X1

public StackState dup2X1()

dup2X2

public StackState dup2X2()

newStack

private StackState newStack(StackEntry... pushValues)

top

public StackEntry top()

top_1

public StackEntry top_1()

top_2

public StackEntry top_2()

top_3

public StackEntry top_3()

toString

public String toString()

Overrides:

toString in class Object

getContents

public List<StackEntry> getContents()

constructorCall

public StackState constructorCall(int initializedValueStackPosition,
 StackEntry entry)

updateMerged

public StackState updateMerged(int pos,
 StackEntry frame)

swap

public StackState swap()