cfg
Class ReturnInst

java.lang.Object
  cfg.TACInst
      cfg.ReturnInst

public class ReturnInst
extends TACInst

A class representing a three-address code return instruction (ReturnInst). An return instruction consists of an optional source operand holding the result of the return expression. From TACInst it also inherits an opcode (RETN).

Field Summary

protected java.lang.String

source Source operand holding result of the return expression (null if none)

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

ReturnInst(java.lang.String source)
ReturnInst constructor

Method Summary

boolean	equals(java.lang.Object o) Compares this object with the parameter object
java.lang.String	getSource() Get the soure operand (result of return expression, null if none)
java.lang.String	getString() Get string representation of instruction (without comments) (note: in general, you want to use toString() to get instruction string)
void	setSource(java.lang.String source) Set the soure operand (result of return expression, to null if none)

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

source

protected java.lang.String source

Source operand holding result of the return expression (null if none)

Constructor Detail

ReturnInst

public ReturnInst(java.lang.String source)

ReturnInst constructor

Parameters:

source - source operand holding result of the return expression

Method Detail

getSource

public java.lang.String getSource()

Get the soure operand (result of return expression, null if none)

Returns:

source operand

setSource

public void setSource(java.lang.String source)

Set the soure operand (result of return expression, to null if none)

Parameters:

source - new 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)