[−][src]Trait cargo::core::source::Source

pub trait Source {
    fn source_id(&self) -> SourceId;

    fn supports_checksums(&self) -> bool;

    fn requires_precise(&self) -> bool;

    fn query(
        &mut self, 
        dep: &Dependency, 
        f: &mut dyn FnMut(Summary)
    ) -> CargoResult<()>;

    fn fuzzy_query(
        &mut self, 
        dep: &Dependency, 
        f: &mut dyn FnMut(Summary)
    ) -> CargoResult<()>;

    fn update(&mut self) -> CargoResult<()>;

    fn download(&mut self, package: PackageId) -> CargoResult<MaybePackage>;

    fn finish_download(
        &mut self, 
        package: PackageId, 
        contents: Vec<u8>
    ) -> CargoResult<Package>;

    fn fingerprint(&self, pkg: &Package) -> CargoResult<String>;

    fn describe(&self) -> String;

    fn replaced_source_id(&self) -> SourceId { ... }

    fn query_vec(&mut self, dep: &Dependency) -> CargoResult<Vec<Summary>> { ... }

    fn verify(&self, _pkg: PackageId) -> CargoResult<()> { ... }

    fn is_replaced(&self) -> bool { ... }
}

A Source finds and downloads remote packages based on names and versions.

Required methods

fn source_id(&self) -> SourceId

Returns the SourceId corresponding to this source

fn supports_checksums(&self) -> bool

Returns whether or not this source will return summaries with checksums listed.

fn requires_precise(&self) -> bool

Returns whether or not this source will return summaries with the precise field in the source id listed.

fn query(
    &mut self,
    dep: &Dependency,
    f: &mut dyn FnMut(Summary)
) -> CargoResult<()>

Attempt to find the packages that match a dependency request.

fn fuzzy_query(
    &mut self,
    dep: &Dependency,
    f: &mut dyn FnMut(Summary)
) -> CargoResult<()>

Attempt to find the packages that are close to a dependency request. Each source gets to define what close means for it. path/git sources may return all dependencies that are at that uri. where as an Index source may return dependencies that have the same canonicalization.

fn update(&mut self) -> CargoResult<()>

The update method performs any network operations required to get the entire list of all names, versions and dependencies of packages managed by the Source.

fn download(&mut self, package: PackageId) -> CargoResult<MaybePackage>

The download method fetches the full package for each name and version specified.

fn finish_download(
    &mut self,
    package: PackageId,
    contents: Vec<u8>
) -> CargoResult<Package>

fn fingerprint(&self, pkg: &Package) -> CargoResult<String>

Generates a unique string which represents the fingerprint of the current state of the source.

This fingerprint is used to determine the "fresheness" of the source later on. It must be guaranteed that the fingerprint of a source is constant if and only if the output product will remain constant.

The pkg argument is the package which this fingerprint should only be interested in for when this source may contain multiple packages.

fn describe(&self) -> String

Describes this source in a human readable fashion, used for display in resolver error messages currently.

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Provided methods

fn replaced_source_id(&self) -> SourceId

Returns the replaced SourceId corresponding to this source

fn query_vec(&mut self, dep: &Dependency) -> CargoResult<Vec<Summary>>

fn verify(&self, _pkg: PackageId) -> CargoResult<()>

If this source supports it, verifies the source of the package specified.

Note that the source may also have performed other checksum-based verification during the download step, but this is intended to be run just before a crate is compiled so it may perform more expensive checks which may not be cacheable.

fn is_replaced(&self) -> bool

Returns whether a source is being replaced by another here

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Implementations on Foreign Types

impl<'a, T: Source + ?Sized + 'a> Source for Box<T>
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fn source_id(&self) -> SourceId
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Forwards to Source::source_id

fn replaced_source_id(&self) -> SourceId
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Forwards to Source::replaced_source_id

fn supports_checksums(&self) -> bool
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Forwards to Source::supports_checksums

fn requires_precise(&self) -> bool
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Forwards to Source::requires_precise

fn query(
    &mut self,
    dep: &Dependency,
    f: &mut dyn FnMut(Summary)
) -> CargoResult<()>
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Forwards to Source::query

fn fuzzy_query(
    &mut self,
    dep: &Dependency,
    f: &mut dyn FnMut(Summary)
) -> CargoResult<()>
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Forwards to Source::query

fn update(&mut self) -> CargoResult<()>
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Forwards to Source::update

fn download(&mut self, id: PackageId) -> CargoResult<MaybePackage>
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Forwards to Source::download

fn fingerprint(&self, pkg: &Package) -> CargoResult<String>
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Forwards to Source::fingerprint

fn verify(&self, pkg: PackageId) -> CargoResult<()>
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Forwards to Source::verify

fn query_vec(&mut self, dep: &Dependency) -> CargoResult<Vec<Summary>>
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impl<'a, T: Source + ?Sized + 'a> Source for &'a mut T
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fn query_vec(&mut self, dep: &Dependency) -> CargoResult<Vec<Summary>>
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Implementors

impl<'cfg> Source for DirectorySource<'cfg>
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fn replaced_source_id(&self) -> SourceId
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fn query_vec(&mut self, dep: &Dependency) -> CargoResult<Vec<Summary>>
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fn is_replaced(&self) -> bool
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impl<'cfg> Source for PathSource<'cfg>
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fn replaced_source_id(&self) -> SourceId
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fn query_vec(&mut self, dep: &Dependency) -> CargoResult<Vec<Summary>>
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fn verify(&self, _pkg: PackageId) -> CargoResult<()>
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fn is_replaced(&self) -> bool
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impl<'cfg> Source for RegistrySource<'cfg>
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fn replaced_source_id(&self) -> SourceId
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fn query_vec(&mut self, dep: &Dependency) -> CargoResult<Vec<Summary>>
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fn verify(&self, _pkg: PackageId) -> CargoResult<()>
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fn is_replaced(&self) -> bool
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impl<'cfg> Source for ReplacedSource<'cfg>
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fn query_vec(&mut self, dep: &Dependency) -> CargoResult<Vec<Summary>>
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impl<'cfg> Source for GitSource<'cfg>
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fn replaced_source_id(&self) -> SourceId
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fn query_vec(&mut self, dep: &Dependency) -> CargoResult<Vec<Summary>>
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fn verify(&self, _pkg: PackageId) -> CargoResult<()>
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fn is_replaced(&self) -> bool
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