sisc.modules.hashtable

Class WeakHashtable

java.lang.Object

sisc.util.Util

sisc.data.Expression

sisc.data.Value

sisc.modules.hashtable.HashtableBase

sisc.modules.hashtable.Hashtable

sisc.modules.hashtable.WeakHashtable

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, Immediate, ExpressionVisitee, Version

public class WeakHashtable
extends Hashtable

See Also:

Serialized Form

Field Summary

Fields inherited from class sisc.data.Expression

annotations, EMPTYSET

Fields inherited from class sisc.util.Util

BACKQUOTE, BEGIN, bundles, caseSensitive, EMPTYLIST, EMPTYVEC, EOF, ERRORK, EVAL, EXPSC, EXPTOP, FALSE, FCONT, FIVE, JEXCEPTION, LAMBDA, LOCATION, maxFloatPrecision, MESSAGE, minFloatPrecision, NAME, OTHER, PARENT, permitInterrupts, QUOTE, QUOTESYM, REPORT, SETBANG, SISC, SISC_SPECIFIC, SISCB, SOURCE_COLUMN, SOURCE_FILE, SOURCE_LINE, SYMENV, THIS, TOPLEVEL, TRUE, UNQUOTE, UNQUOTE_SPLICING, VOID, ZV

Fields inherited from interface sisc.util.Version

VERSION

Constructor Summary

Constructors

Constructor and Description
WeakHashtable()
WeakHashtable(Procedure equalsProc, Procedure hashProc)

Method Summary

Methods

Modifier and Type	Method and Description
protected java.util.Map	getMap()
protected HashtableKey	makeKey(Value k)
boolean	valueEqual(Value v) Compares this value to another for semantic equality.

Methods inherited from class sisc.modules.hashtable.Hashtable

addAList, callEquals, callHashCode, clear, deserialize, display, get, getEqualsProc, getHashProc, keys, put, remove, serialize, size, toAList, valueHashCode, visit

Methods inherited from class sisc.data.Value

apply, displayNamedOpaque, equals, eqv, eval, express, getValue, synopsis, synopsis, toString, write, writeReplace

Methods inherited from class sisc.data.Expression

deserializeAnnotations, getAnnotation, getAnnotation, getAnnotationKeys, getAnnotations, getName, readExternal, readResolve, serializeAnnotations, setAnnotation, setAnnotation, setName, visitAnnotations, writeExternal

Methods inherited from class sisc.util.Util

annotated, annotatedAppEval, append, argCheck, argsToSymbols, assq, bininport, bininstream, binoutport, binoutstream, box, character, charinport, charinreader, charoutport, charoutwriter, charsetFromString, chr, cont, currentClassLoader, env, error, error, error, error, error, error, error, expr, getDefaultCharacterSet, immutablePair, immutableVector, inport, javaExceptionToString, javaWrap, justify, length, liMessage, liMessage, liMessage, liMessage, liMessage, liMessage, liMessage, list, list, list, list, list, makeURL, mapcar, memq, nlib, num, outport, pair, pairToExpressions, pairToExpVect, pairToValues, proc, read, registerBundle, reverse, reverseInPlace, simpleErrorToString, sourceAnnotations, str, string, sym, symbol, symval, truePair, truth, truth, typeError, typeError, updateName, url, url, url, valArrayToList, valArrayToList, valArrayToVec, vec, warn, warn, warn

Methods inherited from class java.lang.Object

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

Constructor Detail

WeakHashtable

public WeakHashtable()

WeakHashtable

public WeakHashtable(Procedure equalsProc,
             Procedure hashProc)

Method Detail

makeKey

protected HashtableKey makeKey(Value k)

Overrides:

makeKey in class Hashtable

getMap

protected java.util.Map getMap()

Overrides:

getMap in class Hashtable

valueEqual

public boolean valueEqual(Value v)

Description copied from class: Value

Compares this value to another for semantic equality. Used to implement Scheme's 'equal?'. Subclasses must test for pointer equality as well as semantic equality, so that infinite loops on recursive structures are less likely.

Overrides:

valueEqual in class Hashtable

Parameters:

v - the other Value