javar.methods
Class Method

java.lang.Object
  |
  +--javar.methods.Method

All Implemented Interfaces:

Code

public class Method

extends Object

implements Code

This class represents a method inside of a class

Author:

Ben Litchfield

Nested Class Summary

Nested classes inherited from class javar.code.Code

Code.CodeHelper

Field Summary

static String

CONSTRUCTOR_NAME

Fields inherited from interface javar.code.Code

AALOAD, AASTORE, ACONST_NULL, ALOAD, ALOAD_0, ALOAD_1, ALOAD_2, ALOAD_3, ANEWARRAY, ARETURN, ARRAYLENGTH, ASTORE, ASTORE_0, ASTORE_1, ASTORE_2, ASTORE_3, ATHROW, BALOAD, BASTORE, BIPUSH, CASTORE, CHECKCAST, CODE_NAMES, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DLOAD_0, DLOAD_1, DLOAD_2, DLOAD_3, DMUL, DNEG, DREM, DRETURN, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAD_0, FLOAD_1, FLOAD_2, FLOAD_3, FMUL, FNEG, FREM, FRETURN, FSUB, GETFIELD, GETSTATIC, GOTO, GOTO_W, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, ILOAD_0, ILOAD_1, ILOAD_2, ILOAD_3, IMUL, INEG, INSTANCEOF, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISTORE_0, ISTORE_1, ISTORE_2, ISTORE_3, ISUB, IUSHR, IXOR, JSR, JSR_W, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDC_2W, LDC_W, LDIV, LLOAD, LLOAD_0, LLOAD_1, LLOAD_2, LLOAD_3, LMUL, LNEG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SASTORE, SIPUSH, SWAP, TABLESWITCH, WIDE

Constructor Summary

Method(ConstantPool p)
Constructor

Method Summary

void	addAttribute(Attribute attr) This will add an attribute to the class.
void	addCommand(int index, Command c) This will add a new command into the mix.
int	getAccessFlags() This will get the access flags for this class
List	getArguments() This will get all the arguments that this class takes
byte[]	getByteCode() This will return the byteCode for this function
int	getName() This will return the name of the method
String	getNameAsString() This will return the name of the method
List	getOperations() This will get a list of Command objects that represent operations that can be executed.
String	getReturnValue() This will get the return value of a class.
boolean	isConstructor() This is a convience method that determines if this method is a constructor or not.
Iterator	listExceptions() This will list all of the exceptions that this method throws.
void	load(DataInputStream in) This will load the data for a method
void	setAccessFlags(int flags) This will set the accessFlags()
void	setDescriptorIndex(int index) This will set the index of the descriptor.
void	setName(int index) This will set the index of the name.
byte[]	toBytes()

Methods inherited from class java.lang.Object

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

Field Detail

CONSTRUCTOR_NAME

public static final String CONSTRUCTOR_NAME

See Also:

Constant Field Values

Constructor Detail

Method

public Method(ConstantPool p)

Constructor

Method Detail

setAccessFlags

public void setAccessFlags(int flags)

This will set the accessFlags()

Parameters:

flags - The new access flags

getAccessFlags

public int getAccessFlags()

This will get the access flags for this class

Returns:

The access flags for this class

setName

public void setName(int index)

This will set the index of the name.

Parameters:

index - The name index

setDescriptorIndex

public void setDescriptorIndex(int index)

This will set the index of the descriptor.

Parameters:

index - The descriptor index

addAttribute

public void addAttribute(Attribute attr)

This will add an attribute to the class.

Parameters:

attr - The attribute to add

listExceptions

public Iterator listExceptions()
                        throws JavarParseException

This will list all of the exceptions that this method throws. This will return a list of objects whose type is CONSTANT_Classref.

Returns:

A list of all exceptions that this methods throws.

Throws:

JavarParseException - If there is an error parsing the exception list

toBytes

public byte[] toBytes()

load

public void load(DataInputStream in)
          throws JavarParseException

This will load the data for a method

JavarParseException

getName

public int getName()

This will return the name of the method

getNameAsString

public String getNameAsString()

This will return the name of the method

isConstructor

public boolean isConstructor()

This is a convience method that determines if this method is a constructor or not. It is a constructor if the name of the method is ''.

getOperations

public List getOperations()

This will get a list of Command objects that represent operations that can be executed.

Returns:

A list of executable operations

addCommand

public void addCommand(int index,
                       Command c)
                throws JavarIOException

This will add a new command into the mix. This will insert the command just before the index so if the call is. A call to insert before a command that does not fall on the index of a previous command will throw and exception. The arguments parameter must be at least as long as the required bytes to fullfil any byte requirements that are required by the operation. It may be null if no bytes are required. addCommand( 1, B8, 0003 ); Before: [0]=2A // 0 aload_0 [1]=B70001 // 1 invokespecial java/lang/Object.()V [4]=B1 // 4 return After: [0]=2A // 0 aload_0 [1]=B80003 // 1 invokestatic reflection/one/Testone.replace(Ljava/lang/String;)Ljava/lang/String; [4]=B70001 // 1 invokespecial java/lang/Object.()V [7]=B1 // 4 return

Parameters:

index - The index of the code to insert the command

JavarIOException

getArguments

public List getArguments()
                  throws JavarParseException

This will get all the arguments that this class takes

Returns:

A List of string elements that represent the types of arguments

Throws:

JavarParseException - If there is an error during the parse of arguments.

getReturnValue

public String getReturnValue()
                      throws JavarParseException

This will get the return value of a class.

Returns:

The return type as a string

Throws:

JavarParseException - If there is an error parsing the return value.

getByteCode

public byte[] getByteCode()

This will return the byteCode for this function