Package edu.iu.jrsalata

Class SicStatement

java.lang.Object

edu.iu.jrsalata.Statement

edu.iu.jrsalata.BaseStatement

edu.iu.jrsalata.SicStatement

public class SicStatement
extends BaseStatement

The SicStatement class represents a SIC statement in an assembler. It extends the BaseStatement class and provides functionality for handling SIC-specific instructions and addressing modes.

Field Summary

Fields

Modifier and Type	Field	Description
protected String	args	args is the arguments of the given statement default value is "000"
protected boolean	xFlag	xFlag represents if an index is being used represented by ",X" at the end of args

Fields inherited from class edu.iu.jrsalata.BaseStatement

format, location, opcode

Fields inherited from class edu.iu.jrsalata.Statement

block, controlSection, line, size

Constructor Summary

Constructors

Constructor	Description
SicStatement()	Constructs a new SicStatement object with default values.
SicStatement(HexNum location, HexNum opcode, String args)	Constructs a SicStatement object with the specified location, opcode, and arguments.

Method Summary

Modifier and Type	Method	Description
void	accept(VisitorInterface visitor)	Accepts a visitor object that implements the VisitorInterface.
String	assemble()	Assembles the SIC statement into its machine code representation.
void	setArgs(String args)	Sets the arguments for the SIC statement.

Methods inherited from class edu.iu.jrsalata.BaseStatement

getLocation, setLocation

Methods inherited from class edu.iu.jrsalata.Statement

getBlock, getControlSection, getLine, getSize, setBlock, setControlSection, setLine

Methods inherited from class java.lang.Object

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

Field Details

args

protected String args

args is the arguments of the given statement default value is "000"

xFlag

protected boolean xFlag

xFlag represents if an index is being used represented by ",X" at the end of args

Constructor Details

SicStatement

public SicStatement()

Constructs a new SicStatement object with default values. Initializes the arguments to "000", sets the format to 3, and updates the size based on the format.

SicStatement

public SicStatement(HexNum location,
 HexNum opcode,
 String args)

Constructs a SicStatement object with the specified location, opcode, and arguments.

Parameters:

location - the memory location of the statement as a HexNum object

opcode - the operation code of the statement as a HexNum object

args - the arguments for the statement as a String; if empty, defaults to "000"

Method Details

setArgs

public void setArgs(String args)

Sets the arguments for the SIC statement. If the provided arguments string are empty, the value of args will not change

Parameters:

args - the arguments to be set

assemble

public String assemble()

Assembles the SIC statement into its machine code representation. This method processes the arguments to determine the addressing mode and checks for the X flag. It then looks up the argument value in the symbol table or interprets it as a hexadecimal number. If the X flag is set, it adjusts the argument value to reflect indexed addressing.

Specified by:

assemble in class Statement

Returns:

A string representing the machine code of the SIC statement.

accept

public void accept(VisitorInterface visitor)

Accepts a visitor object that implements the VisitorInterface. This method allows the visitor to perform some operation on this SicStatement instance.

Specified by:

accept in class Statement

Parameters:

visitor - the visitor object that will visit this SicStatement instance