sisc.exprs
Class AnnotatedExpr

java.lang.Object
  sisc.util.Util
      sisc.data.Expression
          sisc.data.Value
              sisc.exprs.AnnotatedExpr

All Implemented Interfaces:

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

public class AnnotatedExpr
extends Value
implements OptimisticHost

See Also:

Serialized Form

Field Summary

Value	annotation
Expression	expr
Value	stripped

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

AnnotatedExpr()

AnnotatedExpr(Expression expr, Value annotation)

Method Summary

void	alter(Interpreter r, int uexpPosition, Expression replaceWith) Instructs the host to replace the uExp referenced at the given (Expression dependent) position, with the given Expression.
void	deserialize(Deserializer s) All Expressions must implement a default (no-argument) constructor.
void	display(ValueWriter w)
void	eval(Interpreter r) Called to evaluate this value.
Value	express() A debugging function, express returns a Scheme value that describes this expression.
Value	getValue(Interpreter r) Called to obtain the value of this Value.
void	serialize(Serializer s) All Expressions must implement a default (no-argument) constructor.
void	setHosts()
boolean	visit(ExpressionVisitor v)

Methods inherited from class sisc.data.Value

apply, displayNamedOpaque, equals, eqv, synopsis, synopsis, toString, valueEqual, valueHashCode, 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

Field Detail

expr

public Expression expr

annotation

public Value annotation

stripped

public Value stripped

Constructor Detail

AnnotatedExpr

public AnnotatedExpr(Expression expr,
                     Value annotation)

AnnotatedExpr

public AnnotatedExpr()

Method Detail

setHosts

public void setHosts()

Specified by:

setHosts in interface OptimisticHost

eval

public final void eval(Interpreter r)
                throws ContinuationException

Description copied from class: Value

Called to evaluate this value. As Values ordinarily evaluate to themselves, this method simply sets acc to this.

Overrides:

eval in class Value

Parameters:

r - the Interpreter

Throws:

ContinuationException

getValue

public final Value getValue(Interpreter r)
                     throws ContinuationException

Description copied from class: Value

Called to obtain the value of this Value. Simply this.

Specified by:

getValue in interface Immediate

Overrides:

getValue in class Value

Parameters:

r - the Interpreter

Returns:

the immediate value of this expression, or null if the value cannot be obtained immediately.

Throws:

ContinuationException

express

public Value express()

Description copied from class: Expression

A debugging function, express returns a Scheme value that describes this expression. See examples in sisc.exprs.*

Overrides:

express in class Value

serialize

public void serialize(Serializer s)
               throws java.io.IOException

Description copied from class: Expression

All Expressions must implement a default (no-argument) constructor. Those that wish to be serialized to a heap must implement both this and the deserialize method. The Expression may use any method of the Serializer, which implements java.io.DataOutput to write its state.

Overrides:

serialize in class Expression

Parameters:

s - the Serializer

Throws:

java.io.IOException

display

public void display(ValueWriter w)
             throws java.io.IOException

Specified by:

display in class Value

Throws:

java.io.IOException

deserialize

public void deserialize(Deserializer s)
                 throws java.io.IOException

Description copied from class: Expression

All Expressions must implement a default (no-argument) constructor. Those that wish to b serialized to a heap must implement both this and the serialize method. The Expression may use any method of the DataInput stream and the Deserializer serialization context to read its state.

Overrides:

deserialize in class Expression

Parameters:

s - the Deserializer

Throws:

java.io.IOException

visit

public boolean visit(ExpressionVisitor v)

Specified by:

visit in interface ExpressionVisitee

Overrides:

visit in class Expression

alter

public void alter(Interpreter r,
                  int uexpPosition,
                  Expression replaceWith)

Description copied from interface: OptimisticHost

Instructs the host to replace the uExp referenced at the given (Expression dependent) position, with the given Expression.

Specified by:

alter in interface OptimisticHost

uexpPosition - Expression dependent uExp index

replaceWith - Expression to revert to