org.apache.bcel.classfile

Class Code

public final class Code extends Attribute

This class represents a chunk of Java byte code contained in a method. It is instantiated by the Attribute.readAttribute() method. A Code attribute contains informations about operand stack, local variables, byte code and the exceptions handled within this method. This attribute has attributes itself, namely LineNumberTable which is used for debugging purposes and LocalVariableTable which contains information about the local variables.

Version: $Id: Code.java 386056 2006-03-15 11:31:56Z tcurdt $

Author: M. Dahm

Field Summary
Attribute[]	attributes
int	attributes_count
byte[]	code
int	code_length
CodeException[]	exception_table
int	exception_table_length
int	max_locals
int	max_stack

Constructor Summary
	Code(Code c) Initialize from another object.
	Code(int name_index, int length, DataInputStream file, ConstantPool constant_pool)
	Code(int name_index, int length, int max_stack, int max_locals, byte[] code, CodeException[] exception_table, Attribute[] attributes, ConstantPool constant_pool)

Method Summary
void	accept(Visitor v) Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class.
int	calculateLength()
Attribute	copy(ConstantPool _constant_pool)
void	dump(DataOutputStream file) Dump code attribute to file stream in binary format.
Attribute[]	getAttributes()
byte[]	getCode()
CodeException[]	getExceptionTable()
int	getInternalLength()
LineNumberTable	getLineNumberTable()
LocalVariableTable	getLocalVariableTable()
int	getMaxLocals()
int	getMaxStack()
void	setAttributes(Attribute[] attributes)
void	setCode(byte[] code)
void	setExceptionTable(CodeException[] exception_table)
void	setMaxLocals(int max_locals)
void	setMaxStack(int max_stack)
String	toString(boolean verbose)
String	toString()

Field Detail

attributes

private Attribute[] attributes

attributes_count

private int attributes_count

code

private byte[] code

code_length

private int code_length

exception_table

private CodeException[] exception_table

exception_table_length

private int exception_table_length

max_locals

private int max_locals

max_stack

private int max_stack

Constructor Detail

Code

public Code(Code c)

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

Code

Code(int name_index, int length, DataInputStream file, ConstantPool constant_pool)

Parameters: name_index Index pointing to the name Code length Content length in bytes file Input stream constant_pool Array of constants

Code

public Code(int name_index, int length, int max_stack, int max_locals, byte[] code, CodeException[] exception_table, Attribute[] attributes, ConstantPool constant_pool)

Parameters: name_index Index pointing to the name Code length Content length in bytes max_stack Maximum size of stack max_locals Number of local variables code Actual byte code exception_table Table of handled exceptions attributes Attributes of code: LineNumber or LocalVariable constant_pool 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.

Parameters: v Visitor object