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|
use std::path::PathBuf;
use mon::{Parser, ParserIter, alpha1, alphanumeric, r#if, one_of, tag, whitespace1};
use crate::{
Parseable,
ebuild::{Conditional, Depend, Eapi, Eclass, License, SrcUri, Uri, UriPrefix},
useflag::UseFlag,
};
impl<'a> Parseable<'a, &'a str> for UriPrefix {
type Parser = impl Parser<&'a str, Output = Self>;
fn parser() -> Self::Parser {
tag("+mirror")
.map(|_| UriPrefix::Mirror)
.or(tag("+fetch").map(|_| UriPrefix::Fetch))
}
}
impl<'a> Parseable<'a, &'a str> for Uri {
type Parser = impl Parser<&'a str, Output = Self>;
fn parser() -> Self::Parser {
let protocol = alpha1::<&str>()
.followed_by(tag("://"))
.map(|output: &str| output.to_string());
let path = r#if(|c: &char| !c.is_ascii_whitespace())
.repeated()
.at_least(1)
.recognize()
.map(|output: &str| output.to_string());
protocol
.and(path)
.map(|(protocol, path)| Uri { protocol, path })
}
}
impl<'a> Parseable<'a, &'a str> for SrcUri {
type Parser = impl Parser<&'a str, Output = Self>;
fn parser() -> Self::Parser {
let filename = || {
r#if(|c: &char| !c.is_ascii_whitespace())
.repeated()
.at_least(1)
.recognize()
.map(|output: &str| PathBuf::from(output))
};
let uri = UriPrefix::parser()
.opt()
.and(Uri::parser())
.and(filename().preceded_by(tag(" -> ")).opt())
.map(|((prefix, uri), filename)| SrcUri::Uri {
prefix,
uri,
filename,
});
uri.or(filename().map(|path: PathBuf| SrcUri::Filename(path)))
}
}
impl<'a> Parseable<'a, &'a str> for License {
type Parser = impl Parser<&'a str, Output = Self>;
fn parser() -> Self::Parser {
let start = alphanumeric().or(one_of("_".chars()));
let rest = alphanumeric().or(one_of("+_.-".chars())).repeated().many();
start
.and(rest)
.recognize()
.map(|output: &str| License(output.to_string()))
}
}
impl<'a> Parseable<'a, &'a str> for Eapi {
type Parser = impl Parser<&'a str, Output = Self>;
fn parser() -> Self::Parser {
let start = alphanumeric().or(one_of("_".chars()));
let rest = alphanumeric().or(one_of("+_.-".chars())).repeated().many();
start
.and(rest)
.recognize()
.map(|output: &str| Eapi(output.to_string()))
}
}
// TODO:
// Cant find information about eclass names in pms so we allow anything except
// for whitespace.
impl<'a> Parseable<'a, &'a str> for Eclass {
type Parser = impl Parser<&'a str, Output = Self>;
fn parser() -> Self::Parser {
r#if(|c: &char| !c.is_ascii_whitespace())
.repeated()
.at_least(1)
.recognize()
.map(|output: &str| Eclass(output.to_string()))
}
}
impl<'a, T> Parseable<'a, &'a str> for Depend<T>
where
T: Parseable<'a, &'a str>,
{
type Parser = impl Parser<&'a str, Output = Self>;
fn parser() -> Self::Parser {
|it| {
let exprs = || {
Depend::parser()
.separated_by_with_trailing(whitespace1())
.at_least(1)
.delimited_by(tag("(").followed_by(whitespace1()), tag(")"))
};
let all_of_group = exprs().map(|exprs| Depend::AllOf(exprs));
let any_of_group = exprs()
.preceded_by(tag("||").followed_by(whitespace1()))
.map(|exprs| Depend::AnyOf(exprs));
let one_of_group = exprs()
.preceded_by(tag("^^").followed_by(whitespace1()))
.map(|exprs| Depend::OneOf(exprs));
let conditional_group = Conditional::parser()
.followed_by(whitespace1())
.and(exprs())
.map(|(conditional, exprs)| Depend::ConditionalGroup(conditional, exprs));
T::parser()
.map(|e| Depend::Element(e))
.or(conditional_group)
.or(any_of_group)
.or(all_of_group)
.or(one_of_group)
.parse(it)
}
}
}
impl<'a> Parseable<'a, &'a str> for Conditional {
type Parser = impl Parser<&'a str, Output = Self>;
fn parser() -> Self::Parser {
UseFlag::parser()
.preceded_by(tag("!"))
.followed_by(tag("?"))
.map(Conditional::Negative)
.or(UseFlag::parser()
.followed_by(tag("?"))
.map(Conditional::Positive))
}
}
#[cfg(test)]
mod test {
use mon::{ParserIter, input::InputIter};
use crate::{atom::Atom, ebuild::Depend};
use super::*;
#[test]
fn test_src_uri() {
let tests = [
"https://example.com/foo/bar.tar.gz",
"https://example.com/foo/bar.tar.gz -> bar.tar.gz",
];
for test in tests {
SrcUri::parser()
.check_finished(InputIter::new(test))
.unwrap();
}
}
#[test]
fn test_expr() {
let it = InputIter::new("flag? ( || ( foo/bar foo/bar ) )");
Depend::<Atom>::parser()
.separated_by(whitespace1())
.many()
.check_finished(it)
.unwrap();
}
}
|
