use crate::Element;
use crate::*;
use crate::error::TexError;
pub trait Attach{
fn attach(&mut self, element: Element) -> Result<(), TexError>;
}
impl Attach for Part{
fn attach(&mut self, element: Element) -> Result<(), TexError>{
if element.rank() > 0{
return Ok( self.1.push(element));
}
return Err(TexError::RankError);
}
}
impl Attach for Chapter{
fn attach(&mut self, element: Element) -> Result<(), TexError>{
if element.rank() > 1{
return Ok(self.1.push(element));
}
return Err(TexError::RankError);
}
}
impl Attach for Section{
fn attach(&mut self, element: Element) -> Result<(), TexError>{
if element.rank() > 2{
return Ok( self.1.push(element));
}
return Err(TexError::RankError);
}
}
impl Attach for Paragraph{
fn attach(&mut self, element: Element) -> Result<(), TexError>{
if element.rank() > 3{
return Ok(self.1.as_mut().unwrap().push(element));
}
return Err(TexError::RankError);
}
}