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use liquid_error::Result;
use liquid_interpreter::Renderable;
use super::Language;
use super::TagBlock;
use super::TagTokenIter;
pub trait BlockReflection {
fn start_tag(&self) -> &'static str;
fn end_tag(&self) -> &'static str;
fn description(&self) -> &'static str;
fn example(&self) -> Option<&'static str> {
None
}
fn spec(&self) -> Option<&'static str> {
None
}
}
pub trait ParseBlock: Send + Sync + ParseBlockClone + BlockReflection {
fn parse(
&self,
arguments: TagTokenIter,
block: TagBlock,
options: &Language,
) -> Result<Box<Renderable>>;
}
pub trait ParseBlockClone {
fn clone_box(&self) -> Box<ParseBlock>;
}
impl<T> ParseBlockClone for T
where
T: 'static + ParseBlock + Clone,
{
fn clone_box(&self) -> Box<ParseBlock> {
Box::new(self.clone())
}
}
impl Clone for Box<ParseBlock> {
fn clone(&self) -> Box<ParseBlock> {
self.clone_box()
}
}
impl<T> From<T> for Box<ParseBlock>
where
T: 'static + ParseBlock,
{
fn from(filter: T) -> Self {
Box::new(filter)
}
}