com.joanju.cg.bytecode
Class SyshandleInstr

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

public class SyshandleInstr
extends Bytecode

The built-in system handles for TARGET-PROCEDURE and SOURCE-PROCEDURE. The handleType field (see setHandleType()) determines which type of system handle this record represents.

Field Summary

static int	HDL_TYPE_SOURCE_PROCEDURE
static int	HDL_TYPE_TARGET_PROCEDURE

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

address, cuid, instrSet, nodeNum, xrefs

Constructor Summary

SyshandleInstr()

SyshandleInstr(int cuid, int address)

Method Summary

void	calcValueSets() Calculate the value sets for the instruction.
int	getHandleType()
Opcode	getOpcode()
java.util.HashSet<java.lang.Integer>	getValues() Get the set of values for this instruction.
java.util.HashSet<java.lang.Integer>	getWhereUsed() Returns null.
void	setHandleType(int newHandleType) Set the handle type.
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() Displays integer handle type, whereUsed, values.
java.lang.String	toStringFromName(InstructionSet instrs) Returns SOURCE-PROCEDURE or TARGET-PROCEDURE.
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, toStringFromSet

Methods inherited from class java.lang.Object

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

Field Detail

HDL_TYPE_SOURCE_PROCEDURE

public static final int HDL_TYPE_SOURCE_PROCEDURE

See Also:

setHandleType(int), Constant Field Values

HDL_TYPE_TARGET_PROCEDURE

public static final int HDL_TYPE_TARGET_PROCEDURE

See Also:

setHandleType(int), Constant Field Values

Constructor Detail

SyshandleInstr

public SyshandleInstr()

SyshandleInstr

public SyshandleInstr(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

getHandleType

public int getHandleType()

See Also:

setHandleType(int)

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

getWhereUsed

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

Description copied from class: Bytecode

Returns null. May be overridden by subclasses.

Overrides:

getWhereUsed in class Bytecode

Throws:

java.sql.SQLException

java.io.IOException

setHandleType

public void setHandleType(int newHandleType)

Set the handle type. Must be one of the HDL_TYPE_* integer values. Must be called when the record is created.

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)
                                      throws java.sql.SQLException

Description copied from class: Bytecode

All Bytecode instruction subclasses should override this eventually.

Overrides:

toStringFromComments in class Bytecode

Returns:

"" if not overridden.

Throws:

java.sql.SQLException

toStringFromData

public java.lang.String toStringFromData()

Displays integer handle type, whereUsed, values.

Overrides:

toStringFromData in class Bytecode

Returns:

"" if not overridden.

toStringFromName

public java.lang.String toStringFromName(InstructionSet instrs)

Returns SOURCE-PROCEDURE or TARGET-PROCEDURE.

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