package freemarker.core;
import java.util.List;
import freemarker.ext.beans.BeanModel;
import freemarker.ext.beans.BeansWrapper;
import freemarker.template.ObjectWrapper;
import freemarker.template.Template;
import freemarker.template.TemplateException;
import freemarker.template.TemplateMethodModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
class NewBI extends BuiltIn {
static Class<?> JYTHON_MODEL_CLASS;
static {
try {
JYTHON_MODEL_CLASS = Class.forName("freemarker.ext.jython.JythonModel");
} catch (Throwable e) {
JYTHON_MODEL_CLASS = null;
}
}
@Override
TemplateModel _eval(Environment env)
throws TemplateException {
return new ConstructorFunction(target.evalAndCoerceToPlainText(env), env, target.getTemplate());
}
class ConstructorFunction implements TemplateMethodModelEx {
private final Class<?> cl;
private final Environment env;
public ConstructorFunction(String classname, Environment env, Template template) throws TemplateException {
this.env = env;
cl = env.getNewBuiltinClassResolver().resolve(classname, env, template);
if (!TemplateModel.class.isAssignableFrom(cl)) {
throw new _MiscTemplateException(NewBI.this, env,
"Class ", cl.getName(), " does not implement freemarker.template.TemplateModel");
}
if (BeanModel.class.isAssignableFrom(cl)) {
throw new _MiscTemplateException(NewBI.this, env,
"Bean Models cannot be instantiated using the ?", key, " built-in");
}
if (JYTHON_MODEL_CLASS != null && JYTHON_MODEL_CLASS.isAssignableFrom(cl)) {
throw new _MiscTemplateException(NewBI.this, env,
"Jython Models cannot be instantiated using the ?", key, " built-in");
}
}
public Object exec(List arguments) throws TemplateModelException {
ObjectWrapper ow = env.getObjectWrapper();
BeansWrapper bw =
ow instanceof BeansWrapper
? (BeansWrapper) ow
: BeansWrapper.getDefaultInstance();
return bw.newInstance(cl, arguments);
}
}
}