gnu.expr
Class ErrorExp

java.lang.Object
  gnu.mapping.Procedure
      gnu.mapping.Procedure0
          gnu.expr.Expression
              gnu.expr.ErrorExp

All Implemented Interfaces:

Named, Printable

public class ErrorExp
extends Expression

Class used to mark an erroneous expression

Field Summary

Fields inherited from class gnu.expr.Expression

flags, NEXT_AVAIL_FLAG, noExpressions

Constructor Summary

ErrorExp(java.lang.String message)

Method Summary

void	compile(Compilation comp, Target target)
java.lang.Object	eval(Environment env)
void	print(OutPort out)

Methods inherited from class gnu.expr.Expression

apply, apply0, compile, compileButFirst, compileNotePosition, compileWithPosition, compileWithPosition, eval, getColumn, getFile, getFlag, getFlags, getLine, getType, makeWhile, match0, print, printLineColumn, setFile, setFlag, setFlag, setLine, setLine, setLine, setLine, walk, walkChildren

Methods inherited from class gnu.mapping.Procedure0

apply1, apply2, apply3, apply4, applyN, numArgs

Methods inherited from class gnu.mapping.Procedure

apply, check0, check1, check2, check3, check4, checkArgCount, checkN, getName, getProperty, getSetter, getSymbol, match1, match2, match3, match4, matchN, maxArgs, minArgs, name, removeProperty, set0, set1, setN, setName, setProperty, setProperty, setSetter, setSymbol, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ErrorExp

public ErrorExp(java.lang.String message)

Method Detail

eval

public java.lang.Object eval(Environment env)

Overrides:

eval in class Expression

print

public void print(OutPort out)

Specified by:

print in class Expression

compile

public void compile(Compilation comp,
                    Target target)

Specified by:

compile in class Expression