Method parseTaglibDirective

java/org/apache/jasper/compiler/Parser.java:380–427

(Node parent)

     * Parses a taglib directive with the following syntax: Directive ::= ( S Attribute)*
     */
    private void parseTaglibDirective(Node parent) throws JasperException {

        Attributes attrs = parseAttributes();
        String uri = attrs.getValue("uri");
        String prefix = attrs.getValue("prefix");
        if (prefix != null) {
            Mark prevMark = pageInfo.getNonCustomTagPrefix(prefix);
            if (prevMark != null) {
                err.jspError(reader.mark(), "jsp.error.prefix.use_before_dcl", prefix, prevMark.getFile(),
                        "" + prevMark.getLineNumber());
            }
            if (uri != null) {
                String uriPrev = pageInfo.getURI(prefix);
                if (uriPrev != null && !uriPrev.equals(uri)) {
                    err.jspError(reader.mark(), "jsp.error.prefix.refined", prefix, uri, uriPrev);
                }
                if (pageInfo.getTaglib(uri) == null) {
                    TagLibraryInfoImpl impl = null;
                    if (ctxt.getOptions().isCaching()) {
                        impl = (TagLibraryInfoImpl) ctxt.getOptions().getCache().get(uri);
                    }
                    if (impl == null) {
                        TldResourcePath tldResourcePath = ctxt.getTldResourcePath(uri);
                        impl = new TagLibraryInfoImpl(ctxt, parserController, pageInfo, prefix, uri, tldResourcePath,
                                err);
                        if (ctxt.getOptions().isCaching()) {
                            ctxt.getOptions().getCache().put(uri, impl);
                        }
                    }
                    pageInfo.addTaglib(uri, impl);
                }
                pageInfo.addPrefixMapping(prefix, uri);
            } else {
                String tagdir = attrs.getValue("tagdir");
                if (tagdir != null) {
                    String urnTagdir = URN_JSPTAGDIR + tagdir;
                    if (pageInfo.getTaglib(urnTagdir) == null) {
                        pageInfo.addTaglib(urnTagdir,
                                new ImplicitTagLibraryInfo(ctxt, parserController, pageInfo, prefix, tagdir, err));
                    }
                    pageInfo.addPrefixMapping(prefix, urnTagdir);
                }
            }
        }

        @SuppressWarnings("unused")
        Node unused = new Node.TaglibDirective(attrs, start, parent);
    }

    /*
     * Parses a directive with the following syntax: Directive ::= S? ( 'page' PageDirective | 'include'