Class CollectVisitor

java/org/apache/jasper/compiler/Collector.java:29–183

A visitor for collecting information on the page and the body of the custom tags.

     * A visitor for collecting information on the page and the body of the custom tags.
     */
    private static class CollectVisitor extends Node.Visitor {

        private boolean scriptingElementSeen = false;
        private boolean usebeanSeen = false;
        private boolean includeActionSeen = false;
        private boolean paramActionSeen = false;
        private boolean setPropertySeen = false;
        private boolean hasScriptingVars = false;

        @Override
        public void visit(Node.ParamAction n) throws JasperException {
            if (n.getValue().isExpression()) {
                scriptingElementSeen = true;
            }
            paramActionSeen = true;
        }

        @Override
        public void visit(Node.IncludeAction n) throws JasperException {
            if (n.getPage().isExpression()) {
                scriptingElementSeen = true;
            }
            includeActionSeen = true;
            visitBody(n);
        }

        @Override
        public void visit(Node.ForwardAction n) throws JasperException {
            if (n.getPage().isExpression()) {
                scriptingElementSeen = true;
            }
            visitBody(n);
        }

        @Override
        public void visit(Node.SetProperty n) throws JasperException {
            if (n.getValue() != null && n.getValue().isExpression()) {
                scriptingElementSeen = true;
            }
            setPropertySeen = true;
        }

        @Override
        public void visit(Node.UseBean n) throws JasperException {
            if (n.getBeanName() != null && n.getBeanName().isExpression()) {
                scriptingElementSeen = true;
            }
            usebeanSeen = true;
            visitBody(n);
        }

        @Override
        public void visit(Node.CustomTag n) throws JasperException {
            // Check to see what kinds of element we see as child elements
            checkSeen(n.getChildInfo(), n);
        }

        /**