com.joanju.cg.bytecode
Class DefglobalInstr

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

public class DefglobalInstr
extends Bytecode

Record of a global variable.

These are not a record of a DEFINE statement in a compile unit, instead, these are a record of a shared variable in the application, and all its possible values. See DefsharedInstr for records of DEFINE...SHARED instructions.

All DefglobalInstr records have cuid==Layout.CUID_GLOBALS. The address is the string ID for the global variable's name.

Field Summary

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

address, cuid, instrSet, nodeNum, xrefs

Constructor Summary

DefglobalInstr()

DefglobalInstr(int cuid, int address)

Method Summary

void	addValue(int value)
void	addValues(java.util.Collection<java.lang.Integer> addedVals)
void	calcValueSets() Calculate the value sets for the instruction.
static DefglobalInstr	fetchOrCreate(int nameID)
Opcode	getOpcode()
java.util.HashSet<java.lang.Integer>	getValues() Get the set of values for this instruction.
protected void	setValuesFromByteStream(java.io.DataInputStream in)
java.lang.String	toStringFromComments(InstructionSet instrs) All Bytecode instruction subclasses should override this eventually.
java.lang.String	toStringFromData() All Bytecode instruction subclasses should override this eventually.
java.lang.String	toStringFromName(InstructionSet instrs) Some subclasses should override this to return the string literal, var name, procedure name, etc.
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, getWhereUsed, getXrefs, hashCode, initData, isDataModified, isFromDB, setAddress, setCuID, setDataBytesFromDB, setDataModified, setFromDB, setInstructionSet, setNodeNum, shouldLoadData, sourcesForXrefTarget, storeIfModified, toString, toStringFromSet

Methods inherited from class java.lang.Object

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

Constructor Detail

DefglobalInstr

public DefglobalInstr()

DefglobalInstr

public DefglobalInstr(int cuid,
                      int address)

Method Detail

addValue

public void addValue(int value)
              throws java.sql.SQLException,
                     java.io.IOException

Throws:

java.sql.SQLException

java.io.IOException

addValues

public void addValues(java.util.Collection<java.lang.Integer> addedVals)
               throws java.sql.SQLException,
                      java.io.IOException

Throws:

java.sql.SQLException

java.io.IOException

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

fetchOrCreate

public static DefglobalInstr fetchOrCreate(int nameID)
                                    throws java.sql.SQLException,
                                           java.io.IOException

Throws:

java.sql.SQLException

java.io.IOException

getOpcode

public Opcode getOpcode()

Specified by:

getOpcode in class Bytecode

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

setValuesFromByteStream

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

Specified by:

setValuesFromByteStream in class Bytecode

Throws:

java.io.IOException

toStringFromComments

public java.lang.String toStringFromComments(InstructionSet instrs)

Description copied from class: Bytecode

All Bytecode instruction subclasses should override this eventually.

Overrides:

toStringFromComments in class Bytecode

Returns:

"" if not overridden.

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.

toStringFromName

public java.lang.String toStringFromName(InstructionSet instrs)

Description copied from class: Bytecode

Some subclasses should override this to return the string literal, var name, procedure name, etc.

Overrides:

toStringFromName 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