kodkod.ast
Class ComparisonFormula

java.lang.Object
  extended by kodkod.ast.Formula
      extended by kodkod.ast.ComparisonFormula
All Implemented Interfaces:
Node

public final class ComparisonFormula
extends Formula

A formula that compares two expressions, e.g. x = y

Author:
Emina Torlak
invariant:
children = left + right
specfield:
left: Expression
right: Expression
op: Operator

Nested Class Summary
static class ComparisonFormula.Operator
          Represents a comparison operator; e.g.
 
Field Summary
 
Fields inherited from class kodkod.ast.Formula
FALSE, TRUE
 
Method Summary
<E,F,D,I> F
accept(ReturnVisitor<E,F,D,I> visitor)
          Accepts the given visitor and returns the result.
 void accept(VoidVisitor visitor)
          Accepts the given visitor.
 Expression left()
          Returns the left child of this.
 ComparisonFormula.Operator op()
          Returns the operator of this.
 Expression right()
          Returns the right child of this.
 java.lang.String toString()
          Returns the string representation of this formula.
 
Methods inherited from class kodkod.ast.Formula
and, compose, comprehension, forAll, forSome, iff, implies, not, or, quantify, thenElse, thenElse
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Method Detail

left

public Expression left()
Returns the left child of this.

Returns:
this.left

right

public Expression right()
Returns the right child of this.

Returns:
this.right

op

public ComparisonFormula.Operator op()
Returns the operator of this.

Returns:
this.op

accept

public <E,F,D,I> F accept(ReturnVisitor<E,F,D,I> visitor)
Accepts the given visitor and returns the result.

Specified by:
accept in interface Node
Specified by:
accept in class Formula
Returns:
the result of being visited by the given visitor
See Also:
Node.accept(kodkod.ast.visitor.ReturnVisitor)

accept

public void accept(VoidVisitor visitor)
Accepts the given visitor.

See Also:
Node.accept(kodkod.ast.visitor.VoidVisitor)

toString

public java.lang.String toString()
Returns the string representation of this formula.

Overrides:
toString in class java.lang.Object
Returns:
string representation of this formula