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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| use std::str::FromStr; | ||
|
|
||
| use rustc_hash::FxHashMap; | ||
|
|
||
| use pep440_rs::{Operator, Version}; | ||
| use pep508_rs::{MarkerEnvironment, Requirement, VersionOrUrl}; | ||
| use pypi_types::{HashError, Hashes}; | ||
| use requirements_txt::RequirementEntry; | ||
| use uv_normalize::PackageName; | ||
|
|
||
| /// A pinned requirement, as extracted from a `requirements.txt` file. | ||
| #[derive(Debug)] | ||
| pub struct Preference { | ||
| requirement: Requirement, | ||
| hashes: Vec<Hashes>, | ||
| } | ||
|
|
||
| impl Preference { | ||
| /// Create a [`Preference`] from a [`RequirementEntry`]. | ||
| pub fn from_entry(entry: RequirementEntry) -> Result<Self, HashError> { | ||
| Ok(Self { | ||
| requirement: entry.requirement, | ||
| hashes: entry | ||
| .hashes | ||
| .iter() | ||
| .map(String::as_str) | ||
| .map(Hashes::from_str) | ||
| .collect::<Result<_, _>>()?, | ||
| }) | ||
| } | ||
|
|
||
| /// Create a [`Preference`] from a [`Requirement`]. | ||
| pub fn from_requirement(requirement: Requirement) -> Self { | ||
| Self { | ||
| requirement, | ||
| hashes: Vec::new(), | ||
| } | ||
| } | ||
|
|
||
| /// Return the name of the package for this preference. | ||
| pub fn name(&self) -> &PackageName { | ||
| &self.requirement.name | ||
| } | ||
|
|
||
| /// Return the [`Requirement`] for this preference. | ||
| pub fn requirement(&self) -> &Requirement { | ||
| &self.requirement | ||
| } | ||
| } | ||
|
|
||
| /// A set of pinned packages that should be preserved during resolution, if possible. | ||
| #[derive(Debug, Clone)] | ||
| pub(crate) struct Preferences(FxHashMap<PackageName, Pin>); | ||
|
|
||
| impl Preferences { | ||
| /// Create a map of pinned packages from a list of [`Preference`] entries. | ||
| pub(crate) fn from_requirements( | ||
| requirements: Vec<Preference>, | ||
| markers: &MarkerEnvironment, | ||
| ) -> Self { | ||
| Self( | ||
| requirements | ||
| .into_iter() | ||
| .filter_map( | ||
| |Preference { | ||
| requirement, | ||
| hashes, | ||
| }| { | ||
| // Search for, e.g., `flask==1.2.3` entries that match the current environment. | ||
| if !requirement.evaluate_markers(markers, &[]) { | ||
| return None; | ||
| } | ||
| let Some(VersionOrUrl::VersionSpecifier(version_specifiers)) = | ||
| requirement.version_or_url.as_ref() | ||
| else { | ||
| return None; | ||
| }; | ||
| let [version_specifier] = version_specifiers.as_ref() else { | ||
| return None; | ||
| }; | ||
| if *version_specifier.operator() != Operator::Equal { | ||
| return None; | ||
| } | ||
| Some(( | ||
| requirement.name, | ||
| Pin { | ||
| version: version_specifier.version().clone(), | ||
| hashes, | ||
| }, | ||
| )) | ||
| }, | ||
| ) | ||
| .collect(), | ||
| ) | ||
| } | ||
|
|
||
| /// Return the pinned version for a package, if any. | ||
| pub(crate) fn version(&self, package_name: &PackageName) -> Option<&Version> { | ||
| self.0.get(package_name).map(Pin::version) | ||
| } | ||
|
|
||
| /// Return the hashes for a package, if the version matches that of the pin. | ||
| pub(crate) fn match_hashes( | ||
| &self, | ||
| package_name: &PackageName, | ||
| version: &Version, | ||
| ) -> Option<&[Hashes]> { | ||
| let pin = self.0.get(package_name)?; | ||
| if pin.version() != version { | ||
| return None; | ||
| } | ||
| Some(pin.hashes()) | ||
| } | ||
| } | ||
|
|
||
| /// The pinned data associated with a package in a locked `requirements.txt` file (e.g., `flask==1.2.3`). | ||
| #[derive(Debug, Clone)] | ||
| struct Pin { | ||
| version: Version, | ||
| hashes: Vec<Hashes>, | ||
| } | ||
|
|
||
| impl Pin { | ||
| /// Return the version of the pinned package. | ||
| fn version(&self) -> &Version { | ||
| &self.version | ||
| } | ||
|
|
||
| /// Return the hashes of the pinned package. | ||
| fn hashes(&self) -> &[Hashes] { | ||
| &self.hashes | ||
| } | ||
| } |
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