Examples of edu.mit.csail.sdg.alloy4.Runner

edu.mit.csail.sdg.alloy4.ErrorFatal
This class converts a Runnable into an AbstractAction, WindowListener, CaretListener, and MenuListener also.

       TupleSet oldL = bounds.lowerBound(relation);
       TupleSet oldU = bounds.upperBound(relation);
       if (oldU.containsAll(upperBound) && upperBound.containsAll(lowerBound) && lowerBound.containsAll(oldL)) {
          bounds.bound(relation, lowerBound, upperBound);
       } else {
          throw new ErrorAPI("Inconsistent bounds shrinking on relation: "+relation);
       }
    }

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    /** If this solution is solved and satisfiable, evaluates the given expression and returns an A4TupleSet, a java Integer, or a java Boolean. */
    public Object eval(Expr expr) throws Err {
        try {
           if (expr instanceof Sig) return eval((Sig)expr);
           if (expr instanceof Field) return eval((Field)expr);
           if (!solved) throw new ErrorAPI("This solution is not yet solved, so eval() is not allowed.");
           if (eval==null) throw new ErrorAPI("This solution is unsatisfiable, so eval() is not allowed.");
           if (expr.ambiguous && !expr.errors.isEmpty()) expr = expr.resolve(expr.type(), null);
           if (!expr.errors.isEmpty()) throw expr.errors.pick();
           Object result = TranslateAlloyToKodkod.alloy2kodkod(this, expr);
           if (result instanceof IntExpression) return eval.evaluate((IntExpression)result);
           if (result instanceof Formula) return eval.evaluate((Formula)result);

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        }
    }


    /** Returns the Kodkod instance represented by this solution; throws an exception if the problem is not yet solved or if it is unsatisfiable. */
    public Instance debugExtractKInstance() throws Err {
        if (!solved) throw new ErrorAPI("This solution is not yet solved, so instance() is not allowed.");
        if (eval==null) throw new ErrorAPI("This solution is unsatisfiable, so instance() is not allowed.");
        return eval.instance().unmodifiableView();
    }

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        }
    };


    /** Converts an A4TupleSet into a SimTupleset object. */
    private static SimTupleset convert(Object object) throws Err {
        if (!(object instanceof A4TupleSet)) throw new ErrorFatal("Unexpected type error: expecting an A4TupleSet.");
        A4TupleSet s = (A4TupleSet)object;
        if (s.size()==0) return SimTupleset.EMPTY;
        List<SimTuple> list = new ArrayList<SimTuple>(s.size());
        int arity = s.arity();
        for(A4Tuple t: s) {

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     */
    public boolean cform(Expr x) throws Err {
        if (!x.errors.isEmpty()) throw x.errors.pick();
        Object y = visitThis(x);
        if (y instanceof Boolean) return Boolean.TRUE.equals(y);
        throw new ErrorFatal(x.span(), "This should have been a formula.\nInstead it is "+y);
    }

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     */
    public int cint(Expr x) throws Err {
        if (!x.errors.isEmpty()) throw x.errors.pick();
        Object y = visitThis(x);
        if (y instanceof Integer) return trunc((Integer)y);
        throw new ErrorFatal(x.span(), "This should have been an integer expression.\nInstead it is "+y);
    }

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     */
    public SimTupleset cset(Expr x) throws Err {
        if (!x.errors.isEmpty()) throw x.errors.pick();
        Object y = visitThis(x);
        if (y instanceof SimTupleset) return (SimTupleset)y;
        throw new ErrorFatal(x.span(), "This should have been a set or a relation.\nInstead it is "+y);
    }

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          case DIV:
              { int p=cint(x.left), q=cint(x.right), r=(p==0 ? 0 : (q==0 ? (p<0 ? 1 : -1) : (p/q))); return trunc(r); }
          case REM:
              { int p=cint(x.left), q=cint(x.right), r=(p==0 ? 0 : (q==0 ? (p<0 ? 1 : -1) : (p/q))); return trunc(p-r*q); }
        }
        throw new ErrorFatal(x.pos, "Unsupported operator ("+x.op+") encountered during ExprBinary.accept()");
    }

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          case EMPTYNESS: return SimTupleset.EMPTY;
          case STRING: return SimTupleset.make(x.string);
          case NEXT: return SimTupleset.makenext(min, max);
          case IDEN: return cset(Sig.UNIV).iden();
        }
        throw new ErrorFatal(x.pos, "Unsupported operator ("+x.op+") encountered during ExprConstant.accept()");
    }

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          case CAST2INT:    return trunc(cset(x.sub).sum());
          case CLOSURE:     return cset(x.sub).closure();
          case RCLOSURE:    return cset(x.sub).closure().union(cset(ExprConstant.IDEN));
          case TRANSPOSE:   return cset(x.sub).transpose();
        }
        throw new ErrorFatal(x.pos, "Unsupported operator ("+x.op+") encountered during ExprUnary.accept()");
    }

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