cfg
Class BinaryInst

java.lang.Object
  cfg.TACInst
      cfg.BinaryInst

Direct Known Subclasses:

BinaryAddInst, BinaryAndInst, BinaryDivInst, BinaryModInst, BinaryMulInst, BinaryOrInst, BinarySubInst

public abstract class BinaryInst
extends TACInst

A generic class representing a three-address code binary instruction (BinaryInst). It is extended by several specific binary instructions: (BinaryAddInst, BinarySubInst, BinaryMulInst, BinaryDivInst, BinaryModInst, BinaryAndInst, BinaryOrInst, BinaryEqInst, BinaryNEInst, BinaryLTInst, BinaryLEInst, and BinaryGTInst, and BinaryGEInst). A binary instruction consists of a destination variable and two source operands (the types allowed for the two sources depends on the particular type of binary instruction). From TACInst it also inherits an opcode.

Field Summary

protected java.lang.String	destination Destination variable
protected java.lang.String	leftSource Left source operand (type of source allowed varies in different binary instructions)
protected java.lang.String	rightSource Right source operand (type of source allowed varies in different binary instructions)

Fields inherited from class cfg.TACInst

BINADD, BINAND, BINDIV, BINMOD, BINMUL, BINOR, BINSUB, comments, DIRCALL, ERRPARAM, IF, INDIRCALL, LDADDR, LDCONST, LDENTRY, LDVAR, NUM_INSN_TYPES, opcode, REFPARAM, RETN, STDPARAM, STENTRY, UNNEG, UNNOT

Constructor Summary

BinaryInst(int opcode, java.lang.String destination, java.lang.String leftSource, java.lang.String rightSource)
BinaryInst constructor

Method Summary

boolean	equals(java.lang.Object o) Compares this object with the parameter object
java.lang.String	getDestination() Get the destination operand variable
java.lang.String	getLeftSource() Get the left source operand
java.lang.String	getRightSource() Get the right source operand
java.lang.String	getString() Get string representation of instruction (without comments) (note: in general, you want to use toString() to get instruction string)
void	setDestination(java.lang.String destination) Set the destination operand variable
abstract void	setLeftSource(java.lang.String leftSource) Set the left source operand
abstract void	setRightSource(java.lang.String rightSource) Set the right source operand

Methods inherited from class cfg.TACInst

addComment, checkBoolConst, checkConst, checkIntConst, checkLabel, checkStrConst, checkVar, getBinaryOpcode, getComments, getOp, getOpcode, getUnaryOpcode, isBinary, isCall, isIf, isLoad, isParam, isReturn, isStore, isUnary, isValidID, removeComments, toString

Methods inherited from class java.lang.Object

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

Field Detail

destination

protected java.lang.String destination

Destination variable

leftSource

protected java.lang.String leftSource

Left source operand (type of source allowed varies in different binary instructions)

rightSource

protected java.lang.String rightSource

Right source operand (type of source allowed varies in different binary instructions)

Constructor Detail

BinaryInst

public BinaryInst(int opcode,
                  java.lang.String destination,
                  java.lang.String leftSource,
                  java.lang.String rightSource)

BinaryInst constructor

Parameters:

opcode - opcode of binary instruction

destination - destination variable

leftSource - source operand (type of source allowed varies in different binary insn)

rightSource - source operand (type of source allowed varies in different binary insn)

Method Detail

getDestination

public java.lang.String getDestination()

Get the destination operand variable

Returns:

destination operand

setDestination

public void setDestination(java.lang.String destination)

Set the destination operand variable

Parameters:

destination - new destination operand

getLeftSource

public java.lang.String getLeftSource()

Get the left source operand

Returns:

left source operand

setLeftSource

public abstract void setLeftSource(java.lang.String leftSource)

Set the left source operand

Parameters:

leftSource - new left source operand

getRightSource

public java.lang.String getRightSource()

Get the right source operand

Returns:

right source operand

setRightSource

public abstract void setRightSource(java.lang.String rightSource)

Set the right source operand

Parameters:

rightSource - new right source operand

equals

public boolean equals(java.lang.Object o)

Compares this object with the parameter object

Specified by:

equals in class TACInst

Parameters:

o - object to compare the reference object with

Returns:

boolean indicating whether the objects are equivalent

getString

public java.lang.String getString()

Get string representation of instruction (without comments) (note: in general, you want to use toString() to get instruction string)

Specified by:

getString in class TACInst

Returns:

string representation of three address code instruction (without comments)