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

edu.mit.csail.sdg.alloy4.OurBorder
Immutable; this represents a type error that should be reported to the user.

            Expression ans = s2k(x.string);
            if (ans==null) throw new ErrorFatal(x.pos, "String literal "+x+" does not exist in this instance.\n");
            return ans;
          case NUMBER:
            int n=x.num();
            if (n<min) throw new ErrorType(x.pos, "Current bitwidth is set to "+bitwidth+", thus this integer constant "+n+" is smaller than the minimum integer "+min);
            if (n>max) throw new ErrorType(x.pos, "Current bitwidth is set to "+bitwidth+", thus this integer constant "+n+" is bigger than the maximum integer "+max);
            return IntConstant.constant(n);
        }
        throw new ErrorFatal(x.pos, "Unsupported operator ("+x.op+") encountered during ExprConstant.accept()");
    }

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    @Override public Object visit(ExprCall x) throws Err {
        final Func f = x.fun;
        final Object candidate = f.count()==0 ? cacheForConstants.get(f) : null;
        if (candidate!=null) return candidate;
        final Expr body = f.getBody();
        if (body.type().arity()<0 || body.type().arity()!=f.returnDecl.type().arity()) throw new ErrorType(body.span(), "Function return value not fully resolved.");
        final int n = f.count();
        int maxRecursion = unrolls;
        for(Func ff:current_function) if (ff==f) {
            if (maxRecursion<0) {
                throw new ErrorSyntax(x.span(), ""+f+" cannot call itself recursively!");

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      Sig realSig;
      final Pos pos = oldS.pos;
      final CompModule u = res.sig2module.get(oldS);
      final String name = base(oldS);
      final String fullname = (u.path.length()==0) ? ("this/"+name) : (u.path+"/"+name);
      if (!topo.add(oldS)) throw new ErrorType(pos, "Sig "+oldS+" is involved in a cyclic inheritance.");
      if (oldS instanceof SubsetSig)  {
         List<Sig> parents = new ArrayList<Sig>();
         for(Sig n: ((SubsetSig)oldS).parents) {
            Sig parentAST = u.getRawSIG(n.pos, n.label);
            if (parentAST==null) throw new ErrorSyntax(n.pos, "The sig \""+n.label+"\" cannot be found.");

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            for(Field field: sig.getFields()) {
               List<Field> peers=fieldname2fields.get(field.label);
               if (peers==null) { peers=new ArrayList<Field>(); fieldname2fields.put(field.label, peers); }
               for(Field field2: peers)
                  if (field.type().firstColumnOverlaps(field2.type()))
                     throw new ErrorType(field.pos,
                           "Two overlapping signatures cannot have\n" + "two fields with the same name \""+field.label
                           +"\":\n\n1) one is in sig \""+field.sig+"\"\n"+field.pos
                           +"\n\n2) the other is in sig \""+field2.sig+"\"\n"+field2.pos);
               peers.add(field);
            }

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   /** Convenience method that generates a type warning with "msg" as the message,
    * and includes the left and right bounding types in the message.
    */
   private ErrorWarning warn(String msg) {
      return new ErrorWarning(pos, msg
            +"\nLeft type = " + Type.removesBoolAndInt(left.type)
            +"\nRight type = " + Type.removesBoolAndInt(right.type));
   }

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   /** Convenience method that generates a type warning with "msg" as the message,
    * and includes the parent's relevance type, as well as the left and right bounding types in the message.
    */
   private ErrorWarning warn(String msg, Type parent) {
      return new ErrorWarning(pos, msg
         + "\nParent's relevant type = " + Type.removesBoolAndInt(parent)
         + "\nLeft type = " + Type.removesBoolAndInt(left.type)
         + "\nRight type = " + Type.removesBoolAndInt(right.type));
   }

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   //============================================================================================================//


   /** {@inheritDoc} */
   @Override public Expr resolve(Type p, Collection<ErrorWarning> warns) {
      if (errors.size()>0) return this;
      ErrorWarning w=null;
      Type a=left.type, b=right.type;
      switch(op) {
        case MUL: case DIV: case REM: case LT: case LTE: case GT: case GTE: case SHL: case SHR: case SHA:
        case NOT_LTE: case NOT_GTE: case NOT_LT: case NOT_GT: {
           a=(b=Type.INT);

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    //============================================================================================================//


    /** {@inheritDoc} */
    @Override public Expr resolve(Type p, Collection<ErrorWarning> warns) {
        if (errors.size()>0) return this;
        ErrorWarning w1=null, w2=null;
        Type s=p;
        switch(op) {
          case NOT:
            s=Type.FORMULA;
            break;
          case TRANSPOSE: case RCLOSURE: case CLOSURE:
            if (warns!=null && op!=Op.TRANSPOSE && type.join(type).hasNoTuple())
               w1=new ErrorWarning(pos, this+" is redundant since its domain and range are disjoint: "+sub.type.extract(2));
            s = (op!=Op.TRANSPOSE) ? resolveClosure(p, sub.type) : sub.type.transpose().intersect(p).transpose() ;
            if (warns!=null && s==EMPTY && p.hasTuple())
               w2=new ErrorWarning(sub.span(),
               "The value of this expression does not contribute to the value of the parent.\nParent's relevant type = "
               +p+"\nThis expression's type = "+sub.type.extract(2));
            break;
          case CARDINALITY: case NO: case ONE: case SOME: case LONE:
            s=Type.removesBoolAndInt(sub.type);
            break;
          case CAST2SIGINT:
            s=Type.INT;
            break;
          case CAST2INT:
            s=sub.type.intersect(SIGINT.type);
            if (warns!=null && s.hasNoTuple())
               w1=new ErrorWarning(sub.span(),
               "This expression should contain Int atoms.\nInstead, its possible type(s) are:\n"+sub.type.extract(1));
            break;
        }
        Expr sub = this.sub.resolve(s, warns);
        if (w1!=null) warns.add(w1);

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                     +"Some warnings can affect the soundness of the analysis.\n"
                     +"To proceed despite the warnings, go to the Options menu.\n");
                }
            }
            if (array[0].equals("warning")) {
                ErrorWarning e = (ErrorWarning)(array[1]);
                if (!warnings.add(e)) return;
                Pos p=e.pos;
                span.logLink("Warning #"+warnings.size(), "POS: "+p.x+" "+p.y+" "+p.x2+" "+p.y2+" "+p.filename);
                span.log("\n"); span.logIndented(e.msg.trim()); span.log("\n\n");
            }

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        commands=null;
        if (text==null) return null; // If this was called prior to the "text" being fully initialized
        OurSyntaxWidget t = text.get();
        if (Util.onMac()) frame.getRootPane().putClientProperty("windowModified", Boolean.valueOf(t.modified()));
        if (t.isFile()) frame.setTitle(t.getFilename()); else frame.setTitle("Alloy Analyzer "+Version.version());
        toolbar.setBorder(new OurBorder(false, false, text.count()<=1, false));
        int c = t.getCaret();
        int y = t.getLineOfOffset(c)+1;
        int x = c - t.getLineStartOffset(y-1)+1;
        status.setText("<html>&nbsp; Line "+y+", Column "+x
              +(t.modified()?" <b style=\"color:#B43333;\">[modified]</b></html>":"</html>"));

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Related Classes of edu.mit.csail.sdg.alloy4.ErrorType

edu.mit.csail.sdg.alloy4compiler.ast.Expr

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

edu.mit.csail.sdg.alloy4compiler.ast.ExprList

edu.mit.csail.sdg.alloy4compiler.ast.ExprQt

edu.mit.csail.sdg.alloy4compiler.ast.ExprUnary

edu.mit.csail.sdg.alloy4compiler.ast.Func

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