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com.chaoswg.xtc4y.classdesc.code.instructions
Class TableSwitchInstruction  

java.lang.Object
  com.chaoswg.xtc4y.classdesc.code.instructions.Instruction
      com.chaoswg.xtc4y.classdesc.code.instructions.TableSwitchInstruction

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public class TableSwitchInstruction

extends Instruction

A Lookup switch instruction is used to represent switch statements. It consists of the command, an int giving the start number, an int defining the last number of table entires, an int defining the default jump address and a set of entries where each entry consists of one int, a jump address. The end of a TableSwitch Instruction is aligned to 4 byte and therefore gaps are filled up with nop's. That means: (1byte+4bytes+4bytes+4bytes+(4bytes)*+((index+length)%4)) TBD: add methods to instanciate a tableswitch without a stream

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Field Summary
private  Instruction	defaultInstr
private  int	defaultJumpAdress
private  java.io.DataInputStream	dis
private  int	endIndex
private  int	gap
private  Instruction[]	jumpInstr
private  int[]	jumps
private  int	startIndex
static byte	TABLESWITCH           Opcode of int binary instructions

 

Fields inherited from class com.chaoswg.xtc4y.classdesc.code.instructions.Instruction

 

Constructor Summary
protected	TableSwitchInstruction(java.io.DataInputStream dis, com.chaoswg.xtc4y.classdesc.ConstantPool cp)           Creates an LookupSwitchInstruction and initializes it from a DataInputStream

 

Method Summary
int	getNumberOfUsedBytes()
void	resolveIndices(com.chaoswg.xtc4y.classdesc.code.Code code)           Resolve indices of instructions.
void	setIndex(short index)           Set the index of this instruction, is set by the code container
void	write(java.io.DataOutputStream dos, com.chaoswg.xtc4y.classdesc.ConstantPool cp)           Write the instruction onto the DataOutputStream, using the constant pool to register variables.

 

Methods inherited from class com.chaoswg.xtc4y.classdesc.code.instructions.Instruction

getCommand, getIndex, getOpcode, toString

 

Methods inherited from class java.lang.Object

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

 

Field Detail

startIndex

private int startIndex

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endIndex

private int endIndex

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defaultJumpAdress

private int defaultJumpAdress

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jumps

private int[] jumps

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gap

private int gap

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defaultInstr

private Instruction defaultInstr

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jumpInstr

private Instruction[] jumpInstr

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dis

private java.io.DataInputStream dis

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TABLESWITCH

public static final byte TABLESWITCH

Opcode of int binary instructions

See Also:

Constant Field Values

Constructor Detail

TableSwitchInstruction

protected TableSwitchInstruction(java.io.DataInputStream dis,
                                 com.chaoswg.xtc4y.classdesc.ConstantPool cp)
                          throws java.io.IOException

Creates an LookupSwitchInstruction and initializes it from a DataInputStream

Method Detail

setIndex

public void setIndex(short index)

Set the index of this instruction, is set by the code container

Overrides:

setIndex in class Instruction

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resolveIndices

public void resolveIndices(com.chaoswg.xtc4y.classdesc.code.Code code)

Resolve indices of instructions. By default do nothing

Overrides:

resolveIndices in class Instruction

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write

public final void write(java.io.DataOutputStream dos,
                        com.chaoswg.xtc4y.classdesc.ConstantPool cp)
                 throws java.io.IOException

Write the instruction onto the DataOutputStream, using the constant pool to register variables. .

Overrides:

write in class Instruction

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getNumberOfUsedBytes

public int getNumberOfUsedBytes()

Specified by:

getNumberOfUsedBytes in class Instruction

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> com >> chaoswg >> xtc4y >> classdesc >> code >> [ instructions overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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