Package edu.mit.csail.sdg.alloy4

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

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       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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        }
    };

    /** 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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    @Override public Object visit(ExprVar x) throws Err {
        Object ans = env.get(x);
        if (ans==null) ans = sfs.get(x);
        if (ans==null) {
            SimAtom a = SimAtom.make(x.label);
            if (!hasAtom(a)) throw new ErrorFatal(x.pos, "Variable \""+x+"\" is not bound to a legal value during translation.\n");
            ans = SimTupleset.make(SimTuple.make(a));
        }
        return ans;
    }
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             cacheUNIV = cacheUNIV.union(visit(Sig.STRING));
          }
          return cacheUNIV;
       }
       Object ans = sfs.get(x);
       if (ans instanceof SimTupleset) return (SimTupleset)ans; else throw new ErrorFatal("Unknown sig "+x+" encountered during evaluation.");
    }
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  • edu.mit.csail.sdg.alloy4compiler.ast.ExprBadJoin
  • edu.mit.csail.sdg.alloy4compiler.ast.ExprBinary
  • edu.mit.csail.sdg.alloy4compiler.ast.ExprCall
  • edu.mit.csail.sdg.alloy4compiler.ast.ExprChoice
  • edu.mit.csail.sdg.alloy4compiler.ast.ExprITE
  • edu.mit.csail.sdg.alloy4compiler.ast.ExprLet
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