java.lang.Object
- org.jboss.classfilewriter.code.StackState

```
public class StackState
extends Object
```
In immutable stack state, which may be shared between frames

Author:

Stuart Douglas

Constructor Summary

Constructors
Constructor Description

StackState(String exceptionType, ConstPool constPool)

StackState(ConstPool constPool)

Method Summary

All Methods Instance Methods Concrete Methods
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
`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

Constructor Detail

StackState

public StackState(ConstPool constPool)

StackState

public StackState(String exceptionType,
                  ConstPool constPool)

Method Detail

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()
```

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()
```

Constructor	Description
`StackState(String exceptionType, ConstPool constPool)`
`StackState(ConstPool constPool)`

Class StackState

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

StackState

StackState

Method Detail

isOnTop

size

push

push

aconstNull

pop

dup

dupX1

dupX2

dup2

dup2X1

dup2X2

top

top_1

top_2

top_3

toString

getContents

constructorCall

updateMerged

swap