org.prorefactor.treeparser
Class BufferScope

java.lang.Object
  org.prorefactor.treeparser.BufferScope

All Implemented Interfaces:

Xferable

public class BufferScope
extends java.lang.Object
implements Xferable

A record of a BufferSymbol scope to a Block. Tells us if the scope is "strong" or not.

Field Summary

static int	HIDDEN_CURSOR A "hidden cursor" is a BufferScope which has no side-effects on surrounding blocks like strong, weak, and reference scopes do.
static int	REFERENCE
static int	STRONG
static int	WEAK

Constructor Summary

BufferScope()
Only to be used for persistence/serialization.

BufferScope(Block block, TableBuffer symbol, int strength)

Method Summary

Block	getBlock()
TableBuffer	getSymbol()
boolean	isStrong()
boolean	isWeak()
void	setBlock(Block block)
void	setStrength(int strength)
void	writeXferBytes(DataXferStream out) Implement Xferable.
void	writeXferSchema(DataXferStream out) Implement Xferable.

Methods inherited from class java.lang.Object

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

Field Detail

STRONG

public static final int STRONG

See Also:

Constant Field Values

WEAK

public static final int WEAK

See Also:

Constant Field Values

REFERENCE

public static final int REFERENCE

See Also:

Constant Field Values

HIDDEN_CURSOR

public static final int HIDDEN_CURSOR

A "hidden cursor" is a BufferScope which has no side-effects on surrounding blocks like strong, weak, and reference scopes do. These are used within a CAN-FIND function. (2004.Sep:John: Maybe in triggers too? Haven't checked.)

See Also:

Constant Field Values

Constructor Detail

BufferScope

public BufferScope()

Only to be used for persistence/serialization.

BufferScope

public BufferScope(Block block,
                   TableBuffer symbol,
                   int strength)

Method Detail

getBlock

public Block getBlock()

getSymbol

public TableBuffer getSymbol()

isStrong

public boolean isStrong()

isWeak

public boolean isWeak()

setBlock

public void setBlock(Block block)

setStrength

public void setStrength(int strength)

writeXferBytes

public void writeXferBytes(DataXferStream out)
                    throws java.io.IOException

Implement Xferable.

Specified by:

writeXferBytes in interface Xferable

Throws:

java.io.IOException

writeXferSchema

public void writeXferSchema(DataXferStream out)
                     throws java.io.IOException

Implement Xferable.

Specified by:

writeXferSchema in interface Xferable

Throws:

java.io.IOException