org.rubato.scheme
Class SBoolean

java.lang.Object
  extended by org.rubato.scheme.SExpr
      extended by org.rubato.scheme.SBoolean

public final class SBoolean
extends SExpr

The class of Boolean values. There are only two instances, TRUE and FALSE.

Author:
Gérard Milmeister

Field Summary
static SBoolean FALSE
          The Scheme value "#f".
static SBoolean TRUE
          The Scheme value "#t".
 
Fields inherited from class org.rubato.scheme.SExpr
NULL, VOID
 
Method Summary
 java.lang.String display()
          Returns a string representation of this SExpr.
 boolean eq_p(SExpr sexpr)
          Returns true iff this is equal to sexpr in the eq? sense.
 boolean equal_p(SExpr sexpr)
          Returns true iff this is equal to sexpr in the equal? sense.
 boolean equals(java.lang.Object obj)
          Returns true iff this is equal to obj.
 boolean eqv_p(SExpr sexpr)
          Returns true iff this is equal to sexpr in the eqv? sense.
 boolean isBoolean()
          Returns true iff this is a boolean.
static SBoolean make(boolean b)
          Returns the Scheme value corresponding to the boolean b.
 java.lang.String toString()
          Returns a string representation of this SExpr.
 
Methods inherited from class org.rubato.scheme.SExpr
car, cdr, cons, getCar, getCdr, getLength, isChar, isClosure, isComplex, isCons, isDenotator, isForm, isInteger, isList, isNull, isNumber, isPair, isPrimitive, isRational, isReal, isString, isSymbol, isVector, isVoid, nth, setCar, setCdr
 
Methods inherited from class java.lang.Object
getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

TRUE

public static SBoolean TRUE
The Scheme value "#t".


FALSE

public static SBoolean FALSE
The Scheme value "#f".

Method Detail

make

public static SBoolean make(boolean b)
Returns the Scheme value corresponding to the boolean b.


eq_p

public boolean eq_p(SExpr sexpr)
Description copied from class: SExpr
Returns true iff this is equal to sexpr in the eq? sense.

Specified by:
eq_p in class SExpr

eqv_p

public boolean eqv_p(SExpr sexpr)
Description copied from class: SExpr
Returns true iff this is equal to sexpr in the eqv? sense.

Specified by:
eqv_p in class SExpr

equal_p

public boolean equal_p(SExpr sexpr)
Description copied from class: SExpr
Returns true iff this is equal to sexpr in the equal? sense.

Specified by:
equal_p in class SExpr

equals

public boolean equals(java.lang.Object obj)
Description copied from class: SExpr
Returns true iff this is equal to obj. Normally this returns the same result as SExpr.equal_p(org.rubato.scheme.SExpr).

Specified by:
equals in class SExpr

toString

public java.lang.String toString()
Description copied from class: SExpr
Returns a string representation of this SExpr.

Specified by:
toString in class SExpr

display

public java.lang.String display()
Description copied from class: SExpr
Returns a string representation of this SExpr. This is the representation intended to show the result of an evaluation, and should be a valid Scheme expression if possible.

Specified by:
display in class SExpr

isBoolean

public boolean isBoolean()
Description copied from class: SExpr
Returns true iff this is a boolean.

Overrides:
isBoolean in class SExpr