org.gjt.jclasslib.structures.attributes
Class CodeAttribute

java.lang.Object
  org.gjt.jclasslib.structures.AbstractStructure
      org.gjt.jclasslib.structures.AbstractStructureWithAttributes
          org.gjt.jclasslib.structures.AttributeInfo
              org.gjt.jclasslib.structures.attributes.CodeAttribute

public class CodeAttribute
extends AttributeInfo

Describes a Code attribute structure.

Version:

$Revision: 1.4 $ $Date: 2003-08-18 07:52:05 $

Author:

Ingo Kegel

Field Summary

static java.lang.String

ATTRIBUTE_NAME Name of the attribute as in the corresponding constant pool entry.

Fields inherited from class org.gjt.jclasslib.structures.AttributeInfo

SYSTEM_PROPERTY_SKIP_ATTRIBUTES

Fields inherited from class org.gjt.jclasslib.structures.AbstractStructureWithAttributes

attributes

Fields inherited from class org.gjt.jclasslib.structures.AbstractStructure

classFile, debug, SYSTEM_PROPERTY_DEBUG

Constructor Summary

CodeAttribute()

Method Summary

protected void	debug(java.lang.String message) Utility method for derived structures.
int	getAttributeLength() Get the length of this attribute as a number of bytes.
byte[]	getCode() Get the code of this code attribute as an array of bytes .
ExceptionTableEntry[]	getExceptionTable() Get the exception table of this code attribute as an array of ExceptionTableEntry elements.
int	getMaxLocals() Get the maximum number of local variables of this code attribute.
int	getMaxStack() Get the maximum stack depth of this code attribute.
void	read(java.io.DataInput in) Read this structure from the given DataInput.
void	setCode(byte[] code) Set the code of this code attribute as an array of bytes .
void	setExceptionTable(ExceptionTableEntry[] exceptionTable) Set the exception table of this code attribute as an array of ExceptionTableEntry elements.
void	setMaxLocals(int maxLocals) Set the maximum number of local variables of this code attribute.
void	setMaxStack(int maxStack) Set the maximum stack depth of this code attribute.
void	write(java.io.DataOutput out) Write this structure to the given DataOutput.

Methods inherited from class org.gjt.jclasslib.structures.AttributeInfo

createOrSkip, getAttributeNameIndex, getInfo, getName, printAccessFlagsVerbose, setAttributeNameIndex, setInfo

Methods inherited from class org.gjt.jclasslib.structures.AbstractStructureWithAttributes

findAttribute, getAttributes, getTotalAttributesLength, readAttributes, setAttributes, writeAttributes

Methods inherited from class org.gjt.jclasslib.structures.AbstractStructure

getClassFile, getDebug, getLength, printAccessFlags, printAccessFlagsVerbose, printBytes, setClassFile, setDebug

Methods inherited from class java.lang.Object

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

Field Detail

ATTRIBUTE_NAME

public static final java.lang.String ATTRIBUTE_NAME

Name of the attribute as in the corresponding constant pool entry.

See Also:

Constant Field Values

Constructor Detail

CodeAttribute

public CodeAttribute()

Method Detail

getMaxStack

public int getMaxStack()

Get the maximum stack depth of this code attribute.

Returns:

the stack depth

setMaxStack

public void setMaxStack(int maxStack)

Set the maximum stack depth of this code attribute.

Parameters:

maxStack - the stack depth

getMaxLocals

public int getMaxLocals()

Get the maximum number of local variables of this code attribute.

Returns:

the maximum number

setMaxLocals

public void setMaxLocals(int maxLocals)

Set the maximum number of local variables of this code attribute.

Parameters:

maxLocals - the maximum number

getCode

public byte[] getCode()

Get the code of this code attribute as an array of bytes .

Returns:

the array

setCode

public void setCode(byte[] code)

Set the code of this code attribute as an array of bytes .

Parameters:

code - the array

getExceptionTable

public ExceptionTableEntry[] getExceptionTable()

Get the exception table of this code attribute as an array of ExceptionTableEntry elements.

Returns:

the array

setExceptionTable

public void setExceptionTable(ExceptionTableEntry[] exceptionTable)

Set the exception table of this code attribute as an array of ExceptionTableEntry elements.

Parameters:

exceptionTable - the array

read

public void read(java.io.DataInput in)
          throws InvalidByteCodeException,
                 java.io.IOException

Description copied from class: AbstractStructure

Read this structure from the given DataInput.

Excpects DataInput to be in JVM class file format and just before a structure of this kind. No look ahead parsing since the class file format is deterministic.

Overrides:

read in class AttributeInfo

Parameters:

in - the DataInput from which to read

Throws:

InvalidByteCodeException - if the byte code is invalid

java.io.IOException - if an exception occurs with the DataInput

write

public void write(java.io.DataOutput out)
           throws InvalidByteCodeException,
                  java.io.IOException

Description copied from class: AbstractStructure

Write this structure to the given DataOutput.

The written bytes are in JVM class file format.

Overrides:

write in class AttributeInfo

Parameters:

out - the DataOutput to which to write

Throws:

InvalidByteCodeException - if the structure is internally inconsistent

java.io.IOException - if an exception occurs with the DataOutput

getAttributeLength

public int getAttributeLength()

Description copied from class: AttributeInfo

Get the length of this attribute as a number of bytes.

Overrides:

getAttributeLength in class AttributeInfo

Returns:

the length

debug

protected void debug(java.lang.String message)

Description copied from class: AbstractStructure

Utility method for derived structures. Dump a specific debug message.

Overrides:

debug in class AbstractStructure

Parameters:

message - the debug message