use std::ops::Deref;
use anyhow::Context;
use anyhow::Error;
use anyhow::Result;
use pom::parser::Parser as PomParser;
use serde::Deserialize;
use serde::Serialize;
use crate::util::parser::*;
#[derive(Clone, Debug, Hash, Eq, PartialEq, Ord, PartialOrd)]
pub struct PackageVersionConstraint {
constraint: String,
version: PackageVersion,
}
impl PackageVersionConstraint {
fn parser<'a>() -> PomParser<'a, u8, Self> {
(pom::parser::sym(b'=') + PackageVersion::parser())
.convert(|(constraint, version)| {
String::from_utf8(vec![constraint]).map(|c| (c, version))
})
.map(|(constraint, version)| PackageVersionConstraint {
constraint,
version,
})
}
pub fn matches(&self, v: &PackageVersion) -> bool {
self.version == *v
}
#[cfg(test)]
pub fn from_version(constraint: String, version: PackageVersion) -> Self {
PackageVersionConstraint {
constraint,
version,
}
}
}
impl std::convert::TryFrom<String> for PackageVersionConstraint {
type Error = anyhow::Error;
fn try_from(s: String) -> Result<Self> {
Self::try_from(&s as &str)
}
}
impl std::convert::TryFrom<&str> for PackageVersionConstraint {
type Error = anyhow::Error;
fn try_from(s: &str) -> Result<Self> {
PackageVersionConstraint::parser()
.parse(s.as_bytes())
.context("Failed to parse package version constraint")
.context("A package version constraint must have a comparator and a version string, like so: =0.1.0")
.map_err(Error::from)
}
}
impl std::fmt::Display for PackageVersionConstraint {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}{}", self.constraint, self.version)
}
}
#[derive(
parse_display::Display,
Serialize,
Deserialize,
Clone,
Debug,
Hash,
Eq,
PartialEq,
Ord,
PartialOrd,
)]
#[serde(transparent)]
#[display("{0}")]
pub struct PackageVersion(String);
impl Deref for PackageVersion {
type Target = String;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl AsRef<str> for PackageVersion {
fn as_ref(&self) -> &str {
&self.0
}
}
impl From<String> for PackageVersion {
fn from(s: String) -> Self {
PackageVersion(s)
}
}
impl PackageVersion {
fn parser<'a>() -> PomParser<'a, u8, Self> {
(numbers() + ((dash() | under() | dot() | letters() | numbers()).repeat(0..)))
.collect()
.convert(|b| String::from_utf8(b.to_vec()).map(Self::from))
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_parse_version_1() {
assert!(PackageVersion::parser().parse(b"").is_err());
assert!(PackageVersion::parser().parse(b"=").is_err());
assert!(PackageVersion::parser().parse(b"*1").is_err());
assert!(PackageVersion::parser().parse(b">1").is_err());
assert!(PackageVersion::parser().parse(b"<1").is_err());
assert!(PackageVersion::parser().parse(b"=a").is_err());
assert!(PackageVersion::parser().parse(b"=.a").is_err());
assert!(PackageVersion::parser().parse(b"=.1").is_err());
assert!(PackageVersion::parser().parse(b"=a1").is_err());
assert!(PackageVersion::parser().parse(b"a").is_err());
assert!(PackageVersionConstraint::parser()
.parse(b"")
.is_err());
assert!(PackageVersionConstraint::parser()
.parse(b"=")
.is_err());
assert!(PackageVersionConstraint::parser()
.parse(b"*1")
.is_err());
assert!(PackageVersionConstraint::parser()
.parse(b">1")
.is_err());
assert!(PackageVersionConstraint::parser()
.parse(b"<1")
.is_err());
assert!(PackageVersionConstraint::parser()
.parse(b"=a")
.is_err());
assert!(PackageVersionConstraint::parser()
.parse(b"=.a")
.is_err());
assert!(PackageVersionConstraint::parser()
.parse(b"=.1")
.is_err());
assert!(PackageVersionConstraint::parser()
.parse(b"=a1")
.is_err());
assert!(PackageVersionConstraint::parser()
.parse(b"1")
.is_err());
assert!(PackageVersionConstraint::parser()
.parse(b"a")
.is_err());
}
#[test]
fn test_parse_version_2() {
let s = "=1";
let c = PackageVersionConstraint::parser()
.parse(s.as_bytes())
.unwrap();
assert_eq!(c.version, PackageVersion::from(String::from("1")));
}
#[test]
fn test_parse_version_3() {
let s = "=1.0.17";
let c = PackageVersionConstraint::parser()
.parse(s.as_bytes())
.unwrap();
assert_eq!(c.version, PackageVersion::from(String::from("1.0.17")));
}
#[test]
fn test_parse_version_4() {
let s = "=1.0.17asejg";
let c = PackageVersionConstraint::parser()
.parse(s.as_bytes())
.unwrap();
assert_eq!(c.version, PackageVersion::from(String::from("1.0.17asejg")));
}
#[test]
fn test_parse_version_5() {
let s = "=1-0B17-beta1247_commit_12653hasd";
let c = PackageVersionConstraint::parser()
.parse(s.as_bytes())
.unwrap();
assert_eq!(
c.version,
PackageVersion::from(String::from("1-0B17-beta1247_commit_12653hasd"))
);
}
}