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use std::error;
use std::fmt;
use roxmltree::{self, TextPos};
#[derive(Debug)]
pub enum Error {
ElementMustHaveAnId,
ElementCrosslink,
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::ElementMustHaveAnId => {
write!(f, "the element must have an id")
}
Error::ElementCrosslink => {
write!(f, "element crosslink")
}
}
}
}
impl error::Error for Error {
fn description(&self) -> &str {
"an SVG error"
}
}
#[derive(Debug)]
pub enum ParserError {
NoSvgElement,
UnsupportedCSS(TextPos),
DomError(Error),
InvalidAttributeValue(TextPos),
RoXmlError(roxmltree::Error),
}
impl fmt::Display for ParserError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
ParserError::NoSvgElement => {
write!(f, "the document does not have an SVG element")
}
ParserError::UnsupportedCSS(pos) => {
write!(f, "unsupported CSS at {}", pos)
}
ParserError::InvalidAttributeValue(pos) => {
write!(f, "invalid attribute value at {}", pos)
}
ParserError::DomError(ref e) => {
write!(f, "{}", e)
}
ParserError::RoXmlError(ref e) => {
write!(f, "{}", e)
}
}
}
}
impl error::Error for ParserError {
fn description(&self) -> &str {
"an SVG parsing error"
}
}
impl From<Error> for ParserError {
fn from(value: Error) -> Self {
ParserError::DomError(value)
}
}
impl From<roxmltree::Error> for ParserError {
fn from(value: roxmltree::Error) -> Self {
ParserError::RoXmlError(value)
}
}