Package org.apache.bcel.generic

# Class LocalVariableGen

java.lang.Object
org.apache.bcel.generic.LocalVariableGen

All Implemented Interfaces:
  `Cloneable`, `InstructionTargeter`, `NamedAndTyped`

public class LocalVariableGen extends Object implements InstructionTargeter, NamedAndTyped, Cloneable
Represents a local variable within a method. It contains its scope, name and type. The generated LocalVariable object can be obtained with getLocalVariable which needs the instruction list and the constant pool as parameters.

See Also:
  - `LocalVariable`
  - `MethodGen`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `LocalVariableGen(int index, String name, Type type, InstructionHandle start, InstructionHandle end)`
  Generate a local variable that with index 'index'.
  `LocalVariableGen(int index, String name, Type type, InstructionHandle start, InstructionHandle end, int origIndex)`
  Generates a local variable that with index 'index'.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `Object`
  `clone()`
  `boolean`
  `containsTarget(InstructionHandle ih)`
  Checks whether this targeter targets the specified instruction handle.
  `boolean`
  `equals(Object o)`
  We consider to local variables to be equal, if the use the same index and are valid in the same range.
  `InstructionHandle`
  `getEnd()`
  `int`
  `getIndex()`
  `boolean`
  `getLiveToEnd()`
  `LocalVariable`
  `getLocalVariable(ConstantPoolGen cp)`
  Gets LocalVariable object.
  `String`
  `getName()`
  `int`
  `getOrigIndex()`
  `InstructionHandle`
  `getStart()`
  `Type`
  `getType()`
  `int`
  `hashCode()`
  `void`
  `setEnd(InstructionHandle end)`
  `void`
  `setIndex(int index)`
  `void`
  `setLiveToEnd(boolean liveToEnd)`
  `void`
  `setName(String name)`
  `void`
  `setStart(InstructionHandle start)`
  `void`
  `setType(Type type)`
  `String`
  `toString()`
  `void`
  `updateTarget(InstructionHandle oldIh, InstructionHandle newIh)`
  Replaces the target of this targeter from this old handle to the new handle.

  ### Methods inherited from class java.lang.Object

  `finalize, getClass, notify, notifyAll, wait, wait, wait`

- ## Constructor Details

  - ### LocalVariableGen

    public LocalVariableGen(int index, String name, Type type, InstructionHandle start, InstructionHandle end)
    Generate a local variable that with index 'index'. Note that double and long variables need two indexs. Index indices have to be provided by the user.
    Parameters:
      `index` - index of local variable
      `name` - its name
      `type` - its type
      `start` - from where the instruction is valid (null means from the start)
      `end` - until where the instruction is valid (null means to the end)

  - ### LocalVariableGen

    public LocalVariableGen(int index, String name, Type type, InstructionHandle start, InstructionHandle end, int origIndex)
    Generates a local variable that with index 'index'. Note that double and long variables need two indexs. Index indices have to be provided by the user.
    Parameters:
      `index` - index of local variable
      `name` - its name
      `type` - its type
      `start` - from where the instruction is valid (null means from the start)
      `end` - until where the instruction is valid (null means to the end)
      `origIndex` - index of local variable prior to any changes to index

- ## Method Details

  - ### clone

    public Object clone()
    Overrides:
      `clone` in class `Object`

  - ### containsTarget

    public boolean containsTarget(InstructionHandle ih)
    Description copied from interface: `InstructionTargeter`
    Checks whether this targeter targets the specified instruction handle.
    Specified by:
      `containsTarget` in interface `InstructionTargeter`
    Returns:
      true, if ih is target of this variable

  - ### equals

    public boolean equals(Object o)
    We consider to local variables to be equal, if the use the same index and are valid in the same range.
    Overrides:
      `equals` in class `Object`

  - ### getEnd

    public InstructionHandle getEnd()

  - ### getIndex

    public int getIndex()

  - ### getLiveToEnd

    public boolean getLiveToEnd()

  - ### getLocalVariable

    public LocalVariable getLocalVariable(ConstantPoolGen cp)
    Gets LocalVariable object. This relies on that the instruction list has already been dumped to byte code or that the 'setPositions' methods has been called for the instruction list. Note that due to the conversion from byte code offset to InstructionHandle, it is impossible to tell the difference between a live range that ends BEFORE the last insturction of the method or a live range that ends AFTER the last instruction of the method. Hence the liveToEnd flag to differentiate between these two cases.
    Parameters:
      `cp` - constant pool

  - ### getName

    public String getName()
    Specified by:
      `getName` in interface `NamedAndTyped`

  - ### getOrigIndex

    public int getOrigIndex()

  - ### getStart

    public InstructionHandle getStart()

  - ### getType

    public Type getType()
    Specified by:
      `getType` in interface `NamedAndTyped`

  - ### hashCode

    public int hashCode()
    Overrides:
      `hashCode` in class `Object`

  - ### setEnd

    public void setEnd(InstructionHandle end)

  - ### setIndex

    public void setIndex(int index)

  - ### setLiveToEnd

    public void setLiveToEnd(boolean liveToEnd)

  - ### setName

    public void setName(String name)
    Specified by:
      `setName` in interface `NamedAndTyped`

  - ### setStart

    public void setStart(InstructionHandle start)

  - ### setType

    public void setType(Type type)
    Specified by:
      `setType` in interface `NamedAndTyped`

  - ### toString

    public String toString()
    Overrides:
      `toString` in class `Object`

  - ### updateTarget

    public void updateTarget(InstructionHandle oldIh, InstructionHandle newIh)
    Description copied from interface: `InstructionTargeter`
    Replaces the target of this targeter from this old handle to the new handle.
    Specified by:
      `updateTarget` in interface `InstructionTargeter`
    Parameters:
      `oldIh` - old target, either start or end
      `newIh` - new target