com.joanju.cg.bytecode
Class ReturnInstr

java.lang.Object
  com.joanju.cg.bytecode.Bytecode
      com.joanju.cg.bytecode.ReturnInstr

public class ReturnInstr
extends Bytecode

Field Summary

Fields inherited from class com.joanju.cg.bytecode.Bytecode

address, cuid, instrSet, nodeNum, xrefs

Constructor Summary

ReturnInstr()

ReturnInstr(int cuid, int address)

Method Summary

void	calcValueSets() Calculate the value sets for the instruction.
Opcode	getOpcode()
int	getRVal() The rVal is zero unless this is a RETURN from a FUNCTION|METHOD.
java.util.HashSet<java.lang.Integer>	getValues() Get the set of values for this instruction.
java.util.HashSet<java.lang.Integer>	getWhereUsed() Return the address of the function/method PushonretInstr.
void	setPushOnRetInstrAddress(int a)
void	setRVal(int valueAddress) The rVal is zero unless this is a RETURN from a FUNCTION|METHOD.
protected void	setValuesFromByteStream(java.io.DataInputStream in)
java.lang.String	toStringFromData() All Bytecode instruction subclasses should override this eventually.
protected void	writeValuesToByteStream(java.io.DataOutputStream out)

Methods inherited from class com.joanju.cg.bytecode.Bytecode

addSource, addWhereUsed, beforeWrite, calcValuesAgain, compareTo, equals, fetchBytesFromDB, fetchInCu, generateDataForDB, getAddress, getCuID, getNodeNum, getSources, getValuesCalcLocal, getXrefs, hashCode, initData, isDataModified, isFromDB, setAddress, setCuID, setDataBytesFromDB, setDataModified, setFromDB, setInstructionSet, setNodeNum, shouldLoadData, sourcesForXrefTarget, storeIfModified, toString, toStringFromComments, toStringFromName, toStringFromSet

Methods inherited from class java.lang.Object

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

Constructor Detail

ReturnInstr

public ReturnInstr()

ReturnInstr

public ReturnInstr(int cuid,
                   int address)

Method Detail

calcValueSets

public void calcValueSets()
                   throws java.sql.SQLException,
                          java.io.IOException

Description copied from class: Bytecode

Calculate the value sets for the instruction.

Called during build, build-recalc, checkvals, and checkvals-recalc. Implementations should only build from external values once. Calculates which xref records are needed as well.

IMPORTANT: Should only ever be called for instructions belonging to an InstructionSet.

Specified by:

calcValueSets in class Bytecode

Throws:

java.sql.SQLException

java.io.IOException

getOpcode

public Opcode getOpcode()

Specified by:

getOpcode in class Bytecode

getRVal

public int getRVal()
            throws java.sql.SQLException,
                   java.io.IOException

The rVal is zero unless this is a RETURN from a FUNCTION|METHOD.

Throws:

java.sql.SQLException

java.io.IOException

getWhereUsed

public java.util.HashSet<java.lang.Integer> getWhereUsed()
                                                  throws java.sql.SQLException,
                                                         java.io.IOException

Return the address of the function/method PushonretInstr.

Overrides:

getWhereUsed in class Bytecode

Throws:

java.sql.SQLException

java.io.IOException

getValues

public java.util.HashSet<java.lang.Integer> getValues()
                                               throws java.sql.SQLException,
                                                      java.io.IOException

Description copied from class: Bytecode

Get the set of values for this instruction. Should be overridden by most subclasses. This default implementation returns a set containing one Layout.UNRESOLVED_VALUE.

Overrides:

getValues in class Bytecode

Throws:

java.sql.SQLException

java.io.IOException

setPushOnRetInstrAddress

public void setPushOnRetInstrAddress(int a)

setRVal

public void setRVal(int valueAddress)

The rVal is zero unless this is a RETURN from a FUNCTION|METHOD.

setValuesFromByteStream

protected void setValuesFromByteStream(java.io.DataInputStream in)
                                throws java.io.IOException

Specified by:

setValuesFromByteStream in class Bytecode

Throws:

java.io.IOException

toStringFromData

public java.lang.String toStringFromData()

Description copied from class: Bytecode

All Bytecode instruction subclasses should override this eventually.

Overrides:

toStringFromData in class Bytecode

Returns:

"" if not overridden.

writeValuesToByteStream

protected void writeValuesToByteStream(java.io.DataOutputStream out)
                                throws java.io.IOException

Specified by:

writeValuesToByteStream in class Bytecode

Throws:

java.io.IOException