Method Generator

java/org/apache/jasper/compiler/Generator.java:3362–3416

Constructor.

(ServletWriter out, Compiler compiler)

     * Constructor.
     */
    Generator(ServletWriter out, Compiler compiler) throws JasperException {
        this.out = out;
        methodsBuffered = new ArrayList<>();
        charArrayBuffer = null;
        err = compiler.getErrorDispatcher();
        ctxt = compiler.getCompilationContext();
        fragmentHelperClass = new FragmentHelperClass("Helper");
        pageInfo = compiler.getPageInfo();

        ELInterpreter elInterpreter = null;
        try {
            elInterpreter = ELInterpreterFactory.getELInterpreter(compiler.getCompilationContext().getServletContext());
        } catch (Exception e) {
            err.jspError("jsp.error.el_interpreter_class.instantiation", e.getMessage());
        }
        this.elInterpreter = elInterpreter;

        StringInterpreter stringInterpreter = null;
        try {
            stringInterpreter =
                    StringInterpreterFactory.getStringInterpreter(compiler.getCompilationContext().getServletContext());
        } catch (Exception e) {
            err.jspError("jsp.error.string_interpreter_class.instantiation", e.getMessage());
        }
        this.stringInterpreter = stringInterpreter;

        /*
         * Temporary hack. If a JSP page uses the "extends" attribute of the page directive, the _jspInit() method of
         * the generated servlet class will not be called (it is only called for those generated servlets that extend
         * HttpJspBase, the default), causing the tag handler pools not to be initialized and resulting in a NPE. The
         * JSP spec needs to clarify whether containers can override init() and destroy(). For now, we just disable tag
         * pooling for pages that use "extends".
         */
        if (pageInfo.getExtends(false) == null || ctxt.getOptions().getPoolTagsWithExtends()) {
            isPoolingEnabled = ctxt.getOptions().isPoolingEnabled();
        } else {
            isPoolingEnabled = false;
        }
        beanInfo = pageInfo.getBeanRepository();
        varInfoNames = pageInfo.getVarInfoNames();
        breakAtLF = ctxt.getOptions().getMappedFile();
        if (isPoolingEnabled) {
            tagHandlerPoolNames = new ArrayList<>();
        } else {
            tagHandlerPoolNames = null;
        }
        timestampFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        timestampFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
        String nonstandardOptionsList = ctxt.getOptions().getUseNonstandardTagOptimizations();
        if (nonstandardOptionsList == null) {
            nonstandardCustomTagNames = Collections.emptySet();
        } else {
            nonstandardCustomTagNames = new HashSet<>(Arrays.asList(nonstandardOptionsList.split(",")));
        }
    }

    /**
     * The main entry for Generator.