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use std::error::Error;
#[derive(Debug)]
pub enum ParseErrorType {
InvalidSyntaxRange(usize, usize),
InvalidStitchCount(usize),
UnableToReadFromReader(Box<dyn Error>),
}
impl std::fmt::Display for ParseErrorType {
fn fmt(&self, out: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
ParseErrorType::InvalidStitchCount(count) => write!(out, "{{ \"type\" : \"Invalid stitch count\", \"count\" : {} }}", count),
ParseErrorType::InvalidSyntaxRange(range_start, range_end) => write!(
out,
"{{ \"type\" : \"Invalid syntax range\", \"start\" : {}, \"end\" : {} }}",
range_start, range_end
),
ParseErrorType::UnableToReadFromReader(error) => write!(out, "{{ \"type\" : \"Error reading from stream\", \"underlying\" : \"{}\" }}", error),
}
}
}
#[derive(Debug)]
pub struct ParseError {
error_type: Box<ParseErrorType>,
line_number: usize,
}
impl ParseError {
pub fn new(error_type: ParseErrorType, line_number: usize) -> ParseError {
ParseError {
error_type: Box::new(error_type),
line_number,
}
}
pub fn error_type(&self) -> &Box<ParseErrorType> {
&self.error_type
}
pub fn line_number(&self) -> usize {
self.line_number
}
}
impl std::fmt::Display for ParseError {
fn fmt(&self, out: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(out, "{{ \"error\":{}, \"line\":{} }}", self.error_type, self.line_number)
}
}
impl std::error::Error for ParseError {}