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use std::io; #[derive(Debug, Error)] pub enum GbParserError { #[error(display = "Syntax error: {}", _0)] SyntaxError(String), #[error(display = "{}", _0)] Io(#[cause] io::Error), } impl From<io::Error> for GbParserError { fn from(e: io::Error) -> GbParserError { GbParserError::Io(e) } }