Struct PackageRelation

pub struct PackageRelation {
    pub name: Name,
    pub version_requirement: Option<VersionRequirement>,
}

A package relation

Describes a relation to a component. Package relations may either consist of only a Name or of a Name and a VersionRequirement.

Note

A PackageRelation covers all alpm-package-relations except optional dependencies, as those behave differently.

Fields

name: Name

The name of the package

version_requirement: Option<VersionRequirement>

The version requirement for the package

Implementations

impl PackageRelation

pub fn new(name: Name, version_requirement: Option<VersionRequirement>) -> Self

Creates a new PackageRelation

Examples

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

PackageRelation::new(
    "example".parse()?,
    Some(VersionRequirement {
        comparison: VersionComparison::Less,
        version: "1.0.0".parse()?,
    }),
);

PackageRelation::new("example".parse()?, None);

pub fn parser(input: &mut &str) -> ModalResult<Self>

Parses a PackageRelation from a string slice.

Consumes all of its input.

Examples

See Self::from_str for code examples.

Errors

Returns an error if input is not a valid package-relation.

Trait Implementations

impl Clone for PackageRelation

fn clone(&self) -> PackageRelation

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PackageRelation

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PackageRelation

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for PackageRelation

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

Formats the value using the given formatter.

impl FromStr for PackageRelation

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

Parses a PackageRelation from a string slice.

Delegates to PackageRelation::parser.

Errors

Returns an error if PackageRelation::parser fails.

Examples

use std::str::FromStr;

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

assert_eq!(
    PackageRelation::from_str("example<1.0.0")?,
    PackageRelation::new(
        "example".parse()?,
        Some(VersionRequirement {
            comparison: VersionComparison::Less,
            version: "1.0.0".parse()?
        })
    ),
);

assert_eq!(
    PackageRelation::from_str("example<=1.0.0")?,
    PackageRelation::new(
        "example".parse()?,
        Some(VersionRequirement {
            comparison: VersionComparison::LessOrEqual,
            version: "1.0.0".parse()?
        })
    ),
);

assert_eq!(
    PackageRelation::from_str("example=1.0.0")?,
    PackageRelation::new(
        "example".parse()?,
        Some(VersionRequirement {
            comparison: VersionComparison::Equal,
            version: "1.0.0".parse()?
        })
    ),
);

assert_eq!(
    PackageRelation::from_str("example>1.0.0")?,
    PackageRelation::new(
        "example".parse()?,
        Some(VersionRequirement {
            comparison: VersionComparison::Greater,
            version: "1.0.0".parse()?
        })
    ),
);

assert_eq!(
    PackageRelation::from_str("example>=1.0.0")?,
    PackageRelation::new(
        "example".parse()?,
        Some(VersionRequirement {
            comparison: VersionComparison::GreaterOrEqual,
            version: "1.0.0".parse()?
        })
    ),
);

assert_eq!(
    PackageRelation::from_str("example")?,
    PackageRelation::new("example".parse()?, None),
);

assert!(PackageRelation::from_str("example<").is_err());

type Err = Error

The associated error which can be returned from parsing.

impl PartialEq for PackageRelation

fn eq(&self, other: &PackageRelation) -> 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 Serialize for PackageRelation

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for PackageRelation

impl StructuralPartialEq for PackageRelation