physis.core.virtualmachine
Class InstructionSet

java.lang.Object
  |
  +--physis.core.virtualmachine.InstructionSet

All Implemented Interfaces:

java.io.Serializable

public class InstructionSet

extends java.lang.Object

implements java.io.Serializable

This class contains the instructons of an instructionset which belongs to one or more virtual machines.
The persistent storage of the instructions is a simple textfile which has the following format:
[instruction_set_name]
TYPE [type_name] [type_code]
[instruction_name] [instruction_code]
...
TYPE ....

CRC
1. ensure access to instruction_names by codes and vice-versa - Instruction

Author:

sirna

See Also:

Serialized Form

Field Summary

private static Instruction	BLANK_INSTRUCTION The nop instruction should be in all instructionsets.
private static InstructionSet	instance
private Instruction[]	instcodeArray
private java.util.Hashtable	instructions_by_codes The keys are Integers, and the values are Instructions.
private java.util.Hashtable	instructions_by_names The keys are Strings (the names of the instructions), and the values are Instructions.
private java.lang.String	name The identifier name of the instructionset.
private java.util.Random	random
private int	size
private java.util.Hashtable	type_names This hashtable stores the typenames of the instruction categories.

Constructor Summary

private

InstructionSet(java.lang.String instruction_file_name)

Method Summary

Instruction	getBlankInstrunction()
static InstructionSet	getInstance()
static InstructionSet	getInstance(java.lang.String instructionset_file)
Instruction	getInstruction(short instruction_code) Gives the thin InstructionCode object according to the given instruction_code.
Instruction	getInstructionByCode(short code)
Instruction	getInstructionByName(java.lang.String instname)
short	getInstructionCodeRandomly() This method is used when mutating the codetape.
java.lang.String	getInstructionMnemonic(short instruction_code) Gives the instruction's name (mnemonic) corresponding to the given instruction_code.
java.lang.String	getName()
int	getSize()
java.lang.String	getTypeName(int instruction_type_code) Gives the name of the corresponding integer type code.

Methods inherited from class java.lang.Object

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

Field Detail

BLANK_INSTRUCTION

private static final Instruction BLANK_INSTRUCTION

The nop instruction should be in all instructionsets. And only its code is allowed to and should be less than zero.

instance

private static InstructionSet instance

type_names

private java.util.Hashtable type_names

This hashtable stores the typenames of the instruction categories. The keys are integers.

instructions_by_codes

private java.util.Hashtable instructions_by_codes

The keys are Integers, and the values are Instructions. With help of this hashtable it's easy to get all the information about instructions.

instructions_by_names

private java.util.Hashtable instructions_by_names

The keys are Strings (the names of the instructions), and the values are Instructions. With help of this hashtable it's easy to get all the information about instructions.

name

private java.lang.String name

The identifier name of the instructionset.

instcodeArray

private Instruction[] instcodeArray

size

private int size

random

private java.util.Random random

Constructor Detail

InstructionSet

private InstructionSet(java.lang.String instruction_file_name)

Method Detail

getInstance

public static InstructionSet getInstance()

getInstance

public static InstructionSet getInstance(java.lang.String instructionset_file)

getTypeName

public java.lang.String getTypeName(int instruction_type_code)

Gives the name of the corresponding integer type code. It is useful only for people, for debugging...

getInstruction

public Instruction getInstruction(short instruction_code)

Gives the thin InstructionCode object according to the given instruction_code.

getInstructionByName

public Instruction getInstructionByName(java.lang.String instname)

getInstructionByCode

public Instruction getInstructionByCode(short code)

getInstructionMnemonic

public java.lang.String getInstructionMnemonic(short instruction_code)

Gives the instruction's name (mnemonic) corresponding to the given instruction_code.

getBlankInstrunction

public Instruction getBlankInstrunction()

getInstructionCodeRandomly

public short getInstructionCodeRandomly()

This method is used when mutating the codetape.

getName

public java.lang.String getName()

getSize

public int getSize()