InsnList

java.lang.Object
- scala.tools.asm.tree.InsnList

```
public class InsnList
extends java.lang.Object
```
A doubly linked list of AbstractInsnNode objects. This implementation is not thread safe.

Constructor Summary

Constructors
Constructor Description

InsnList()

Constructors
Constructor	Description
`InsnList()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`accept(MethodVisitor methodVisitor)`	Makes the given visitor visit all the instructions in this list.
`void`	`add(AbstractInsnNode insnNode)`	Adds the given instruction to the end of this list.
`void`	`add(InsnList insnList)`	Adds the given instructions to the end of this list.
`void`	`clear()`	Removes all the instructions of this list.
`boolean`	`contains(AbstractInsnNode insnNode)`	Returns `true` if the given instruction belongs to this list.
`AbstractInsnNode`	`get(int index)`	Returns the instruction whose index is given.
`AbstractInsnNode`	`getFirst()`	Returns the first instruction in this list.
`AbstractInsnNode`	`getLast()`	Returns the last instruction in this list.
`int`	`indexOf(AbstractInsnNode insnNode)`	Returns the index of the given instruction in this list.
`void`	`insert(AbstractInsnNode insnNode)`	Inserts the given instruction at the beginning of this list.
`void`	`insert(AbstractInsnNode previousInsn, AbstractInsnNode insnNode)`	Inserts the given instruction after the specified instruction.
`void`	`insert(AbstractInsnNode previousInsn, InsnList insnList)`	Inserts the given instructions after the specified instruction.
`void`	`insert(InsnList insnList)`	Inserts the given instructions at the beginning of this list.
`void`	`insertBefore(AbstractInsnNode nextInsn, AbstractInsnNode insnNode)`	Inserts the given instruction before the specified instruction.
`void`	`insertBefore(AbstractInsnNode nextInsn, InsnList insnList)`	Inserts the given instructions before the specified instruction.
`java.util.ListIterator<AbstractInsnNode>`	`iterator()`	Returns an iterator over the instructions in this list.
`java.util.ListIterator<AbstractInsnNode>`	`iterator(int index)`	Returns an iterator over the instructions in this list.
`void`	`remove(AbstractInsnNode insnNode)`	Removes the given instruction from this list.
`void`	`resetLabels()`	Resets all the labels in the instruction list.
`void`	`set(AbstractInsnNode oldInsnNode, AbstractInsnNode newInsnNode)`	Replaces an instruction of this list with another instruction.
`int`	`size()`	Returns the number of instructions in this list.
`AbstractInsnNode[]`	`toArray()`	Returns an array containing all the instructions in this list.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - InsnList
```
public InsnList()
```
- Method Detail
  - size
```
public int size()
```
    Returns the number of instructions in this list.
    
    Returns:
    
    the number of instructions in this list.
  - getFirst
```
public AbstractInsnNode getFirst()
```
    Returns the first instruction in this list.
    
    Returns:
    
    the first instruction in this list, or null if the list is empty.
  - getLast
```
public AbstractInsnNode getLast()
```
    Returns the last instruction in this list.
    
    Returns:
    
    the last instruction in this list, or null if the list is empty.
  - get
```
public AbstractInsnNode get(int index)
```
    Returns the instruction whose index is given. This method builds a cache of the instructions in this list to avoid scanning the whole list each time it is called. Once the cache is built, this method runs in constant time. This cache is invalidated by all the methods that modify the list.
    
    Parameters:
    
    index - the index of the instruction that must be returned.
    
    Returns:
    
    the instruction whose index is given.
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if (index < 0 || index >= size()).
  - contains
```
public boolean contains(AbstractInsnNode insnNode)
```
    Returns true if the given instruction belongs to this list. This method always scans the instructions of this list until it finds the given instruction or reaches the end of the list.
    
    Parameters:
    
    insnNode - an instruction.
    
    Returns:
    
    true if the given instruction belongs to this list.
  - indexOf
```
public int indexOf(AbstractInsnNode insnNode)
```
    Returns the index of the given instruction in this list. This method builds a cache of the instruction indexes to avoid scanning the whole list each time it is called. Once the cache is built, this method run in constant time. The cache is invalidated by all the methods that modify the list.
    
    Parameters:
    
    insnNode - an instruction of this list.
    
    Returns:
    
    the index of the given instruction in this list. The result of this method is undefined if the given instruction does not belong to this list. Use contains(scala.tools.asm.tree.AbstractInsnNode) to test if an instruction belongs to an instruction list or not.
  - accept
```
public void accept(MethodVisitor methodVisitor)
```
    Makes the given visitor visit all the instructions in this list.
    
    Parameters:
    
    methodVisitor - the method visitor that must visit the instructions.
  - iterator
```
public java.util.ListIterator<AbstractInsnNode> iterator()
```
    Returns an iterator over the instructions in this list.
    
    Returns:
    
    an iterator over the instructions in this list.
  - iterator
```
public java.util.ListIterator<AbstractInsnNode> iterator(int index)
```
    Returns an iterator over the instructions in this list.
    
    Parameters:
    
    index - index of instruction for the iterator to start at.
    
    Returns:
    
    an iterator over the instructions in this list.
  - toArray
```
public AbstractInsnNode[] toArray()
```
    Returns an array containing all the instructions in this list.
    
    Returns:
    
    an array containing all the instructions in this list.
  - set
```
public void set(AbstractInsnNode oldInsnNode,
                AbstractInsnNode newInsnNode)
```
    Replaces an instruction of this list with another instruction.
    
    Parameters:
    
    oldInsnNode - an instruction of this list.
    
    newInsnNode - another instruction, which must not belong to any InsnList.
  - add
```
public void add(AbstractInsnNode insnNode)
```
    Adds the given instruction to the end of this list.
    
    Parameters:
    
    insnNode - an instruction, which must not belong to any InsnList.
  - add
```
public void add(InsnList insnList)
```
    Adds the given instructions to the end of this list.
    
    Parameters:
    
    insnList - an instruction list, which is cleared during the process. This list must be different from 'this'.
  - insert
```
public void insert(AbstractInsnNode insnNode)
```
    Inserts the given instruction at the beginning of this list.
    
    Parameters:
    
    insnNode - an instruction, which must not belong to any InsnList.
  - insert
```
public void insert(InsnList insnList)
```
    Inserts the given instructions at the beginning of this list.
    
    Parameters:
    
    insnList - an instruction list, which is cleared during the process. This list must be different from 'this'.
  - insert
```
public void insert(AbstractInsnNode previousInsn,
                   AbstractInsnNode insnNode)
```
    Inserts the given instruction after the specified instruction.
    
    Parameters:
    
    previousInsn - an instruction of this list after which insnNode must be inserted.
    
    insnNode - the instruction to be inserted, which must not belong to any InsnList.
  - insert
```
public void insert(AbstractInsnNode previousInsn,
                   InsnList insnList)
```
    Inserts the given instructions after the specified instruction.
    
    Parameters:
    
    previousInsn - an instruction of this list after which the instructions must be inserted.
    
    insnList - the instruction list to be inserted, which is cleared during the process. This list must be different from 'this'.
  - insertBefore
```
public void insertBefore(AbstractInsnNode nextInsn,
                         AbstractInsnNode insnNode)
```
    Inserts the given instruction before the specified instruction.
    
    Parameters:
    
    nextInsn - an instruction of this list before which insnNode must be inserted.
    
    insnNode - the instruction to be inserted, which must not belong to any InsnList.
  - insertBefore
```
public void insertBefore(AbstractInsnNode nextInsn,
                         InsnList insnList)
```
    Inserts the given instructions before the specified instruction.
    
    Parameters:
    
    nextInsn - an instruction of this list before which the instructions must be inserted.
    
    insnList - the instruction list to be inserted, which is cleared during the process. This list must be different from 'this'.
  - remove
```
public void remove(AbstractInsnNode insnNode)
```
    Removes the given instruction from this list.
    
    Parameters:
    
    insnNode - the instruction of this list that must be removed.
  - clear
```
public void clear()
```
    Removes all the instructions of this list.
  - resetLabels
```
public void resetLabels()
```
    Resets all the labels in the instruction list. This method should be called before reusing an instruction list between several ClassWriters.

Class InsnList

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

InsnList

Method Detail

size

getFirst

getLast

get

contains

indexOf

accept

iterator

iterator

toArray

set

add

add

insert

insert

insert

insert

insertBefore

insertBefore

remove

clear

resetLabels