at.dms.classfile
Class CodeInfo

java.lang.Object
  at.dms.classfile.Attribute
      at.dms.classfile.CodeInfo

Direct Known Subclasses:

SkippedCodeInfo

public class CodeInfo
extends Attribute

VMS 4.7.3 : Code Attribute. It contains the Java virtual machine instructions and auxiliary information for a single method. !!! graf 990904 add support for generic attributes.

Field Summary

static CodeInfo

DUM_INFO

Fields inherited from class at.dms.classfile.Attribute

EMPTY

Constructor Summary

protected	CodeInfo() This constructor is only used by SkippedCodeInfo
	CodeInfo(DataInput in, ConstantPool cp) Make up a new attribute
	CodeInfo(Instruction[] instructions, HandlerInfo[] handlers, LineNumberInfo[] lineNumbers, LocalVariableInfo[] localVariables) Make up a new attribute

Method Summary

int	getCodeLength() Returns the length in bytes of the instruction array.
HandlerInfo[]	getHandlers() Returns handlers
Instruction[]	getInstructions() Returns the instruction of code
LineNumberInfo[]	getLineNumbers() Returns line number information
LocalVariableInfo[]	getLocalVariables() Returns local variable information
int	getMaxLocals() Returns the number of locals vars used in this method (including parameters).
int	getMaxStack() Returns the highest value reached by the stack.
int	getParameterCount() Gets the number of parameters for this method.
void	setParameterCount(int paramCnt) Sets the number of parameters for this method.
void	transformAccessors(AccessorTransformer transformer) Transforms the accessors contained in this class.

Methods inherited from class at.dms.classfile.Attribute

read, readCodeInfoAttribute, readInterfaceOnly

Methods inherited from class java.lang.Object

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

Field Detail

DUM_INFO

public static final CodeInfo DUM_INFO

Constructor Detail

CodeInfo

public CodeInfo(Instruction[] instructions,
                HandlerInfo[] handlers,
                LineNumberInfo[] lineNumbers,
                LocalVariableInfo[] localVariables)

Make up a new attribute

Parameters:

instructions - array of VM instructions

handlers - exception handlers

lineNumbers - line number information

localVariables - local variable information

CodeInfo

public CodeInfo(DataInput in,
                ConstantPool cp)
         throws IOException,
                ClassFileFormatException

Make up a new attribute

Parameters:

in - the stream to read from

cp - the constant pool

Throws:

IOException - an io problem has occured

ClassFileFormatException - attempt to write a bad classfile info

CodeInfo

protected CodeInfo()

This constructor is only used by SkippedCodeInfo

Method Detail

transformAccessors

public void transformAccessors(AccessorTransformer transformer)
                        throws BadAccessorException

Transforms the accessors contained in this class.

Parameters:

transformer - the transformer used to transform accessors

Throws:

BadAccessorException

getInstructions

public Instruction[] getInstructions()

Returns the instruction of code

getHandlers

public HandlerInfo[] getHandlers()

Returns handlers

getLineNumbers

public LineNumberInfo[] getLineNumbers()

Returns line number information

getLocalVariables

public LocalVariableInfo[] getLocalVariables()

Returns local variable information

getCodeLength

public int getCodeLength()

Returns the length in bytes of the instruction array.

getMaxStack

public int getMaxStack()

Returns the highest value reached by the stack.

getMaxLocals

public int getMaxLocals()

Returns the number of locals vars used in this method (including parameters).

setParameterCount

public void setParameterCount(int paramCnt)

Sets the number of parameters for this method.

getParameterCount

public int getParameterCount()

Gets the number of parameters for this method.