Package de.inetsoftware.classparser

Class Code

java.lang.Object

de.inetsoftware.classparser.Code

public class Code
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
private Attributes	attributes
private byte[]	codeData
private ConstantPool	constantPool
private TryCatchFinally[]	exceptionTable
private LineNumberTable	lineNumberTable
private LocalVariableTable	localVariableTable
private int	maxLocals
private int	maxStack
private static TryCatchFinally[]	NO_TRY_CATCHES

Constructor Summary

Constructors

Constructor	Description
Code(java.io.DataInputStream input, ConstantPool constantPool)	The code of a method attribute.

Method Summary

Modifier and Type	Method	Description
CodeInputStream	getByteCode()	Get the stream of Java Byte code instruction of this method.
int	getCodeSize()	Get the last position of the code.
ConstantPool	getConstantPool()	Get the constant pool of this code.
TryCatchFinally[]	getExceptionTable()	Get exception table of this code block.
int	getFirstLineNr()
LineNumberTable	getLineNumberTable()	Get the line number table.
LocalVariableTable	getLocalVariableTable()	Get the local variable table of this method.
private static TryCatchFinally[]	readExceptionTable(java.io.DataInputStream input, ConstantPool constantPool)	Read the exception table and correct some problems.

Methods inherited from class java.lang.Object

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

Field Detail

NO_TRY_CATCHES

private static final TryCatchFinally[] NO_TRY_CATCHES

constantPool

private final ConstantPool constantPool

maxStack

private final int maxStack

maxLocals

private final int maxLocals

codeData

private final byte[] codeData

exceptionTable

private final TryCatchFinally[] exceptionTable

attributes

private final Attributes attributes

lineNumberTable

private LineNumberTable lineNumberTable

localVariableTable

private LocalVariableTable localVariableTable

Constructor Detail

Code

Code(java.io.DataInputStream input,
     @Nonnull
     ConstantPool constantPool)
throws java.io.IOException

The code of a method attribute. http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.7.3 http://docs.oracle.com/javase/specs/jvms/se5.0/html/ClassFile.doc.html#1546

Parameters:

input - the stream of the code attribute

constantPool - the ConstantPool of the class

Throws:

java.io.IOException - if an I/O error occurs

Method Detail

readExceptionTable

private static TryCatchFinally[] readExceptionTable(java.io.DataInputStream input,
                                                    @Nonnull
                                                    ConstantPool constantPool)
                                             throws java.io.IOException

Read the exception table and correct some problems.

Parameters:

input - the stream of the code attribute

constantPool - the ConstantPool of the class

Returns:

the exception table

Throws:

java.io.IOException - if an I/O error occurs

getConstantPool

@Nonnull
public ConstantPool getConstantPool()

Get the constant pool of this code.

Returns:

the ConstantPool of the class

getExceptionTable

@Nonnull
public TryCatchFinally[] getExceptionTable()

Get exception table of this code block.

Returns:

the table, can be empty

getLineNumberTable

@Nullable
public LineNumberTable getLineNumberTable()
                                   throws java.io.IOException

Get the line number table. is null if the code was optimized.

Returns:

the table or null

Throws:

java.io.IOException - if any I/O error occur

getLocalVariableTable

@Nullable
public LocalVariableTable getLocalVariableTable()
                                         throws java.io.IOException

Get the local variable table of this method.

Returns:

the variables

Throws:

java.io.IOException - if any I/O error occur

getFirstLineNr

public int getFirstLineNr()
                   throws java.io.IOException

Throws:

java.io.IOException

getByteCode

public CodeInputStream getByteCode()

Get the stream of Java Byte code instruction of this method.

Returns:

the stream

getCodeSize

public int getCodeSize()

Get the last position of the code.

Returns:

the size.