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use lalrpop_util::ParseError;
use crate::{
Error,
packet::Tag,
};
pub(crate) mod lexer;
lalrpop_util::lalrpop_mod!(
#[allow(clippy::all)]
#[allow(unused_parens)]
grammar,
"/cert/parser/low_level/grammar.rs"
);
pub(crate) use self::lexer::Token;
pub(crate) use self::lexer::Lexer;
pub(crate) use self::grammar::CertParser;
// Converts a ParseError<usize, Token, Error> to a
// ParseError<usize, Tag, Error>.
//
// Justification: a Token is a tuple containing a Tag and a Packet.
// This function essentially drops the Packet. Dropping the packet is
// necessary, because packets are not async, but Fail, which we want
// to convert ParseErrors to, is. Since we don't need the packet in
// general anyways, changing the Token to a Tag is a simple and
// sufficient fix. Unfortunately, this conversion is a bit ugly and
// will break if lalrpop ever extends ParseError.
pub(crate) fn parse_error_downcast(e: ParseError<usize, Token, Error>)
-> ParseError<usize, Tag, Error>
{
match e {
ParseError::UnrecognizedToken {
token: (start, t, end),
expected,
} => ParseError::UnrecognizedToken {
token: (start, t.into(), end),
expected,
},
ParseError::ExtraToken {
token: (start, t, end),
} => ParseError::ExtraToken {
token: (start, t.into(), end),
},
ParseError::InvalidToken { location }
=> ParseError::InvalidToken { location },
ParseError::User { error }
=> ParseError::User { error },
ParseError::UnrecognizedEOF { location, expected }
=> ParseError::UnrecognizedEOF { location, expected },
}
}
pub(crate) fn parse_error_to_openpgp_error(e: ParseError<usize, Tag, Error>)
-> Error
{
match e {
ParseError::User { error } => error,
e => Error::MalformedCert(format!("{}", e)),
}
}
/// Errors that CertValidator::check may return.
#[derive(Debug, Clone)]
pub enum CertParserError {
/// A parser error.
Parser(ParseError<usize, Tag, Error>),
/// An OpenPGP error.
OpenPGP(Error),
}
impl From<CertParserError> for anyhow::Error {
fn from(err: CertParserError) -> Self {
match err {
CertParserError::Parser(p) => p.into(),
CertParserError::OpenPGP(p) => p.into(),
}
}
}
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