Examples with PropagatorVisitor coreVisitors.PropagatorVisitor used on opensource projects

Example 1 with PropagatorVisitor

use of coreVisitors.PropagatorVisitor in project L42 by ElvisResearchGroup.

the class UsedPaths method collectNotAnyPaths.

private static List<Ast.Path> collectNotAnyPaths(Program p, ExpCore e) {
    class HeuristicForNotAnyPathsSplit extends PropagatorVisitor {

        public Void visit(ClassB s) {
            return null;
        }

        protected List<Path> paths = new ArrayList<Path>();

        private void add(Path p) {
            this.paths.add(p);
        }

        //non determinism heuristic:
        //**if P.m(_) inside e, P not Any
        public Void visit(MCall s) {
            Path p = justPath(s.getInner());
            if (p != null) {
                add(p);
            }
            return super.visit(s);
        }

        //**if ( _ T x=P _ _) inside e and T!=class Any, P not Any.
        //**if (mdf P x=_ _) inside e, P not Any  
        protected void liftDec(Block.Dec s) {
            if (s.getT().isPresent()) {
                Path pt = s.getT().get().getPath();
                if (!pt.isPrimitive()) {
                    add(pt);
                }
            }
            Path p = justPath(s.getInner());
            if (p != null) {
                add(p);
            }
            super.liftDec(s);
        }

        private Path justPath(ExpCore e) {
            if (e instanceof ExpCore.EPath) {
                if (!((ExpCore.EPath) e).getInner().isPrimitive()) {
                    return ((ExpCore.EPath) e).getInner();
                }
            }
            if (e instanceof ExpCore.Block) {
                return justPath(((ExpCore.Block) e).getInner());
            }
            return null;
        }

        //**if p(Pi).Cache=Typed, Pi is not Any
        @Override
        protected void liftP(Path s) {
            if (s.isPrimitive()) {
                return;
            }
            try {
                if (p.extractClassB(s).getPhase() == Phase.Typed) {
                    super.liftP(s);
                    return;
                }
            } catch (ErrorMessage.PathMetaOrNonExistant pne) {
            /*we do not rise this error while computing the heuristic*/
            }
        }

        //**if using P _ _ inside e, P not Any
        public Void visit(ExpCore.Using s) {
            if (!s.getPath().isPrimitive()) {
                add(s.getPath());
            }
            return super.visit(s);
        }

        //**if catch T inside e, T.P not Any
        protected void liftO(ExpCore.Block.On on) {
            Path pOn = on.getT().getPath();
            if (!pOn.isPrimitive()) {
                add(pOn);
            }
            super.liftO(on);
        }

        List<Path> result(ExpCore e) {
            e.accept(this);
            return this.paths;
        }
    }
    return new HeuristicForNotAnyPathsSplit().result(e);
}