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use std::io::Read;
use std::str::FromStr;

use xml::attribute::OwnedAttribute;
use xml::reader::{EventReader, XmlEvent};

use super::*;

impl ElementReader for TableRow {
    fn read<R: Read>(r: &mut EventReader<R>, _: &[OwnedAttribute]) -> Result<Self, ReaderError> {
        let mut cells = vec![];
        loop {
            let e = r.next();
            match e {
                Ok(XmlEvent::StartElement {
                    attributes, name, ..
                }) => {
                    let e = XMLElement::from_str(&name.local_name).unwrap();
                    if let XMLElement::TableCell = e {
                        cells.push(TableCell::read(r, &attributes)?);
                        continue;
                    }
                }
                Ok(XmlEvent::EndElement { name, .. }) => {
                    let e = XMLElement::from_str(&name.local_name).unwrap();
                    if e == XMLElement::TableRow {
                        return Ok(TableRow::new(cells));
                    }
                }
                Err(_) => return Err(ReaderError::XMLReadError),
                _ => {}
            }
        }
    }
}