Package org.apache.bcel.classfile

Class LocalVariableTable

java.lang.Object

org.apache.bcel.classfile.Attribute

org.apache.bcel.classfile.LocalVariableTable

All Implemented Interfaces:

Cloneable, Node

public class LocalVariableTable
extends Attribute

This class represents colection of local variables in a method. This attribute is contained in the Code attribute.

See Also:

Code, LocalVariable

Field Summary

Fields inherited from class org.apache.bcel.classfile.Attribute

constant_pool, length, name_index, tag

Constructor Summary

Constructors

Constructor	Description
LocalVariableTable(int nameIndex, int length, LocalVariable[] localVariableTable, ConstantPool constantPool)
LocalVariableTable(LocalVariableTable c)	Initialize from another object.

Method Summary

Modifier and Type	Method	Description
void	accept(Visitor v)	Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class.
Attribute	copy(ConstantPool _constant_pool)
void	dump(DataOutputStream file)	Dump local variable table attribute to file stream in binary format.
LocalVariable	getLocalVariable(int index)	Deprecated. since 5.2 because multiple variables can share the same slot, use getLocalVariable(int index, int pc) instead.
LocalVariable	getLocalVariable(int index, int pc)
LocalVariable[]	getLocalVariableTable()
int	getTableLength()
void	setLocalVariableTable(LocalVariable[] local_variable_table)
String	toString()

Methods inherited from class org.apache.bcel.classfile.Attribute

addAttributeReader, addAttributeReader, clone, getConstantPool, getLength, getName, getNameIndex, getTag, println, readAttribute, readAttribute, removeAttributeReader, setConstantPool, setLength, setNameIndex

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalVariableTable

public LocalVariableTable(LocalVariableTable c)

Initialize from another object. Note that both objects use the same references (shallow copy). Use copy() for a physical copy.

LocalVariableTable

public LocalVariableTable(int nameIndex,
                          int length,
                          LocalVariable[] localVariableTable,
                          ConstantPool constantPool)

Parameters:

nameIndex - Index in constant pool to `LocalVariableTable'

length - Content length in bytes

localVariableTable - Table of local variables

constantPool - Array of constants

Method Detail

accept

public void accept(Visitor v)

Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.

Specified by:

accept in interface Node

Specified by:

accept in class Attribute

Parameters:

v - Visitor object

dump

public final void dump(DataOutputStream file)
                throws IOException

Dump local variable table attribute to file stream in binary format.

Overrides:

dump in class Attribute

Parameters:

file - Output file stream

Throws:

IOException

getLocalVariableTable

public final LocalVariable[] getLocalVariableTable()

Returns:

Array of local variables of method.

getLocalVariable

@Deprecated
public final LocalVariable getLocalVariable(int index)

Deprecated.

since 5.2 because multiple variables can share the same slot, use getLocalVariable(int index, int pc) instead.

Parameters:

index - the variable slot

Returns:

the first LocalVariable that matches the slot or null if not found

getLocalVariable

public final LocalVariable getLocalVariable(int index,
                                            int pc)

Parameters:

index - the variable slot

pc - the current pc that this variable is alive

Returns:

the LocalVariable that matches or null if not found

setLocalVariableTable

public final void setLocalVariableTable(LocalVariable[] local_variable_table)

toString

public final String toString()

Overrides:

toString in class Attribute

Returns:

String representation.

copy

public Attribute copy(ConstantPool _constant_pool)

Specified by:

copy in class Attribute

Returns:

deep copy of this attribute

getTableLength

public final int getTableLength()