Struct VersionRequirement

pub struct VersionRequirement {
    pub comparison: VersionComparison,
    pub version: Version,
}

A version requirement, e.g. for a dependency package.

It consists of a target version and a comparison function. A version requirement of >=1.5 has a target version of 1.5 and a comparison function of VersionComparison::GreaterOrEqual.

Examples

use std::str::FromStr;

use alpm_types::{Version, VersionComparison, VersionRequirement};

let requirement = VersionRequirement::from_str(">=1.5").unwrap();

assert_eq!(requirement.comparison, VersionComparison::GreaterOrEqual);
assert_eq!(requirement.version, Version::from_str("1.5").unwrap());

Fields

comparison: VersionComparison

version: Version

Implementations

impl VersionRequirement

pub fn new(comparison: VersionComparison, version: Version) -> Self

Create a new VersionRequirement

pub fn is_satisfied_by(&self, ver: &Version) -> bool

Returns true if the requirement is satisfied by the given package version.

Examples

use std::str::FromStr;

use alpm_types::{Version, VersionRequirement};

let requirement = VersionRequirement::from_str(">=1.5-3").unwrap();

assert!(!requirement.is_satisfied_by(&Version::from_str("1.5").unwrap()));
assert!(requirement.is_satisfied_by(&Version::from_str("1.5-3").unwrap()));
assert!(requirement.is_satisfied_by(&Version::from_str("1.6").unwrap()));
assert!(requirement.is_satisfied_by(&Version::from_str("2:1.0").unwrap()));
assert!(!requirement.is_satisfied_by(&Version::from_str("1.0").unwrap()));

Trait Implementations

impl Clone for VersionRequirement

fn clone(&self) -> VersionRequirement

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for VersionRequirement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for VersionRequirement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromStr for VersionRequirement

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a version requirement from a string.

Errors

Returns an error if the comparison function or version are malformed.

type Err = Error

The associated error which can be returned from parsing.

impl PartialEq for VersionRequirement

fn eq(&self, other: &VersionRequirement) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for VersionRequirement

impl StructuralPartialEq for VersionRequirement