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use std::ops::Deref;
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 {
pub fn new(s: String) -> Result<Self> {
Self::parser()
.parse(s.as_bytes())
.map_err(Error::from)
}
pub 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 }
}
}
#[derive(Serialize, Deserialize, Clone, Debug, Hash, Eq, PartialEq, Ord, PartialOrd)]
#[serde(transparent)]
pub struct PackageVersion(String);
impl Deref for PackageVersion {
type Target = String;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl From<String> for PackageVersion {
fn from(s: String) -> Self {
PackageVersion(s)
}
}
impl std::fmt::Display for PackageVersion {
fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
self.0.fmt(f)
}
}
impl PackageVersion {
pub 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("".as_bytes()).is_err());
assert!(PackageVersion::parser().parse("=".as_bytes()).is_err());
assert!(PackageVersion::parser().parse("*1".as_bytes()).is_err());
assert!(PackageVersion::parser().parse(">1".as_bytes()).is_err());
assert!(PackageVersion::parser().parse("<1".as_bytes()).is_err());
assert!(PackageVersion::parser().parse("=a".as_bytes()).is_err());
assert!(PackageVersion::parser().parse("=.a".as_bytes()).is_err());
assert!(PackageVersion::parser().parse("=.1".as_bytes()).is_err());
assert!(PackageVersion::parser().parse("=a1".as_bytes()).is_err());
assert!(PackageVersion::parser().parse("a".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse("".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse("=".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse("*1".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse(">1".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse("<1".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse("=a".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse("=.a".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse("=.1".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse("=a1".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse("1".as_bytes()).is_err());
assert!(PackageVersionConstraint::parser().parse("a".as_bytes()).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")));
}
}
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