StringLiteral(String value) 
{
        this.value = value;
}

 Expression _deepClone(String name,
    Expression subst) 
{
        StringLiteral cloned = new StringLiteral(value);
        cloned.interpolatedOutput = this.interpolatedOutput;
        return cloned;
}

 TemplateModel _getAsTemplateModel(Environment env) throws TemplateException 
{
        return new SimpleScalar(getStringValue(env));
}

  void checkInterpolation() throws ParseException 
{
        if (value.length()  > 3 && (value.indexOf("${")  >= 0 || value.indexOf("#{")  >= 0)) {
            SimpleCharStream scs = new SimpleCharStream(new StringReader(value), beginLine, beginColumn+1, value.length());
            FMParserTokenManager token_source = new FMParserTokenManager(scs);
            token_source.onlyTextOutput = true;
            FMParser parser = new FMParser(token_source);
            parser.template = getTemplate();
            try {
                interpolatedOutput = parser.FreeMarkerText();
            }
            catch(ParseException e) {
                e.setTemplateName(getTemplate().getName());
                throw e;
            }
            this.constantValue = null;
        }
}

 public String getAsString() 
{
        return value;
}

 public String getCanonicalForm() 
{
//        return "\"" + StringUtil.FTLStringLiteralEnc(value) + "\""; 
        return "\"" + escapeString(value) + "\"";
}

 String getStringValue(Environment env) throws TemplateException 
{
        if (interpolatedOutput == null) {
            return value;
        } 
        else {
            TemplateExceptionHandler teh = env.getTemplateExceptionHandler();
            env.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER);
            try {
               return env.renderElementToString(interpolatedOutput);
            }
            catch (IOException ioe) {
                throw new TemplateException(ioe, env);
            }
            finally {
                env.setTemplateExceptionHandler(teh);
            }
        }
}

 boolean isLiteral() 
{
        return interpolatedOutput == null;
}