Generator(ServletWriter out,
    Compiler compiler) 
{
        this.out = out;
        methodsBuffered = new ArrayList();
        charArrayBuffer = null;
        err = compiler.getErrorDispatcher();
        ctxt = compiler.getCompilationContext();
        fragmentHelperClass = new FragmentHelperClass("Helper");
        pageInfo = compiler.getPageInfo();
        /*
         * 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) {
            isPoolingEnabled = ctxt.getOptions().isPoolingEnabled();
        } else {
            isPoolingEnabled = false;
        }
        beanInfo = pageInfo.getBeanRepository();
        breakAtLF = ctxt.getOptions().getMappedFile();
        if (isPoolingEnabled) {
            tagHandlerPoolNames = new Vector();
        }
}

Constructor.

 static String escape(String s) 
{
        if (s == null)
            return "";
        StringBuffer b = new StringBuffer();
        for (int i = 0; i <  s.length(); i++) {
            char c = s.charAt(i);
            if (c == '"")
                b.append('\\").append('"");
            else if (c == '\\")
                b.append('\\").append('\\");
            else if (c == '\n")
                b.append('\\").append('n");
            else if (c == '\r")
                b.append('\\").append('r");
            else
                b.append(c);
        }
        return b.toString();
}

 public static  void generate(ServletWriter out,
    Compiler compiler,
    Node.Nodes page) throws JasperException 
{
        Generator gen = new Generator(out, compiler);
        if (gen.isPoolingEnabled) {
            gen.compileTagHandlerPoolList(page);
        }
        if (gen.ctxt.isTagFile()) {
            JasperTagInfo tagInfo = (JasperTagInfo) gen.ctxt.getTagInfo();
            gen.generateTagHandlerPreamble(tagInfo, page);
            if (gen.ctxt.isPrototypeMode()) {
                return;
            }
            gen.generateXmlProlog(page);
            gen.fragmentHelperClass.generatePreamble();
            page.visit(gen.new GenerateVisitor(gen.ctxt.isTagFile(), out,
                    gen.methodsBuffered, gen.fragmentHelperClass, gen.ctxt
                            .getClassLoader(), tagInfo));
            gen.generateTagHandlerPostamble(tagInfo);
        } else {
            gen.generatePreamble(page);
            gen.generateXmlProlog(page);
            gen.fragmentHelperClass.generatePreamble();
            page.visit(gen.new GenerateVisitor(gen.ctxt.isTagFile(), out,
                    gen.methodsBuffered, gen.fragmentHelperClass, gen.ctxt
                            .getClassLoader(), null));
            gen.generatePostamble(page);
        }
}

The main entry for Generator.

 public  void generateSetDynamicAttribute() 
{
        out
                .printil("public void setDynamicAttribute(String uri, String localName, Object value) throws JspException {");
        out.pushIndent();
        /*
         * According to the spec, only dynamic attributes with no uri are to be
         * present in the Map; all other dynamic attributes are ignored.
         */
        out.printil("if (uri == null)");
        out.pushIndent();
        out.printil("_jspx_dynamic_attrs.put(localName, value);");
        out.popIndent();
        out.popIndent();
        out.printil("}");
}

 static String quote(String s) 
{
                                 
        if (s == null)
            return "null";
        return '"" + escape(s) + '"";
}

 static String quote(char c) 
{
        StringBuffer b = new StringBuffer();
        b.append('\'");
        if (c == '\'")
            b.append('\\").append('\'");
        else if (c == '\\")
            b.append('\\").append('\\");
        else if (c == '\n")
            b.append('\\").append('n");
        else if (c == '\r")
            b.append('\\").append('r");
        else
            b.append(c);
        b.append('\'");
        return b.toString();
}

Single quote and escape a character