sisc.data
Class MemoizedSymbol

java.lang.Object
  sisc.util.Util
      sisc.data.Expression
          sisc.data.Value
              sisc.data.Symbol
                  sisc.data.MemoizedSymbol

All Implemented Interfaces:

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

public class MemoizedSymbol
extends Symbol
implements Singleton

See Also:

Serialized Form

Field Summary

Fields inherited from class sisc.data.Symbol

symval

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

MemoizedSymbol()

Method Summary

static Symbol	intern(java.lang.String str) Interns the given symbol.
Value	singletonValue()

Methods inherited from class sisc.data.Symbol

deserialize, display, get, get, getUnique, normalize, serialize, valueEqual, valueHashCode, write

Methods inherited from class sisc.data.Value

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

Methods inherited from class sisc.data.Expression

deserializeAnnotations, getAnnotation, getAnnotation, getAnnotationKeys, getAnnotations, getName, readExternal, readResolve, serializeAnnotations, setAnnotation, setAnnotation, setName, visit, 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

MemoizedSymbol

public MemoizedSymbol()

Method Detail

intern

public static Symbol intern(java.lang.String str)

Interns the given symbol.

Returns:

the interned symbol, or null if the symbol was not previously defined

singletonValue

public Value singletonValue()

Specified by:

singletonValue in interface Singleton