public SimpleTemplateEngine() 
{
      
        this(GroovyShell.class.getClassLoader());
}

 public SimpleTemplateEngine(boolean verbose) 
{
        this(GroovyShell.class.getClassLoader());
        setVerbose(verbose);
}

 public SimpleTemplateEngine(ClassLoader parentLoader) 
{
        this(new GroovyShell(parentLoader));
}

 public SimpleTemplateEngine(GroovyShell groovyShell) 
{
        this.groovyShell = groovyShell;
}

 public Template createTemplate(Reader reader) throws CompilationFailedException, IOException 
{
        SimpleTemplate template = new SimpleTemplate();
        String script = template.parse(reader);
        if (verbose) {
            System.out.println("\n-- script source --");
            System.out.print(script);
            System.out.println("\n-- script end --\n");
        }
        try {
            template.script = groovyShell.parse(script, "SimpleTemplateScript" + counter++ + ".groovy");
        } catch (Exception e) {
            throw new GroovyRuntimeException("Failed to parse template script (your template may contain an error or be trying to use expressions not currently supported): " + e.getMessage());
        }
        return template;
}

 public boolean isVerbose() 
{
        return verbose;
}

 public  void setVerbose(boolean verbose) 
{
        this.verbose = verbose;
}