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PackageDependency.swift
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PackageDependency.swift
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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2018 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
extension Package {
/// A package dependency of a Swift package.
///
/// A package dependency consists of a Git URL to the source of the package,
/// and a requirement for the version of the package.
///
/// Swift Package Manager performs a process called _dependency resolution_ to determine
/// the exact version of the package dependencies that an app or other Swift
/// package can use. The `Package.resolved` file records the results of the
/// dependency resolution and lives in the top-level directory of a Swift
/// package. If you add the Swift package as a package dependency to an app
/// for an Apple platform, you can find the `Package.resolved` file inside
/// your `.xcodeproj` or `.xcworkspace`.
public class Dependency {
/// The type of dependency.
@available(_PackageDescription, introduced: 5.6)
public enum Kind {
/// A dependency located at the given path.
/// - Parameters:
/// - name: The name of the dependency.
/// - path: The path to the dependency.
case fileSystem(name: String?, path: String)
/// A dependency based on a source control requirement.
/// - Parameters:
/// - name: The name of the dependency.
/// - location: The Git URL of the dependency.
/// - requirement: The version-based requirement for a package.
case sourceControl(name: String?, location: String, requirement: SourceControlRequirement)
/// A dependency based on a registry requirement.
/// - Parameters:
/// - id: The package identifier of the dependency.
/// - requirement: The version based requirement for a package.
case registry(id: String, requirement: RegistryRequirement)
}
/// A description of the package dependency.
@available(_PackageDescription, introduced: 5.6)
public let kind: Kind
/// The name of the dependency.
///
/// If the `name` is `nil`, Swift Package Manager deduces the dependency's name from its
/// package identity or Git URL.
@available(_PackageDescription, deprecated: 5.6, message: "use kind instead")
public var name: String? {
get {
switch self.kind {
case .fileSystem(name: let name, path: _):
return name
case .sourceControl(name: let name, location: _, requirement: _):
return name
case .registry:
return nil
}
}
}
/// The Git URL of the package dependency.
@available(_PackageDescription, deprecated: 5.6, message: "use kind instead")
public var url: String? {
get {
switch self.kind {
case .fileSystem(name: _, path: let path):
return path
case .sourceControl(name: _, location: let location, requirement: _):
return location
case .registry:
return nil
}
}
}
/// Module aliases for targets in this dependency. The key is an original target name and
/// the value is a new unique name mapped to the name of the .swiftmodule binary.
internal var moduleAliases: [String: String]?
/// The dependency requirement of the package dependency.
@available(_PackageDescription, deprecated: 5.6, message: "use kind instead")
public var requirement: Requirement {
get {
switch self.kind {
case .fileSystem:
return .localPackageItem
case .sourceControl(name: _, location: _, requirement: let requirement):
switch requirement {
case .branch(let branch):
return .branchItem(branch)
case .exact(let version):
return .exactItem(version)
case .range(let range):
return .rangeItem(range)
case .revision(let revision):
return .revisionItem(revision)
}
case .registry(id: _, requirement: let requirement):
switch requirement {
case .exact(let version):
return .exactItem(version)
case .range(let range):
return .rangeItem(range)
}
}
}
}
/// Initializes and returns a newly allocated requirement with the specified url and requirements.
@available(_PackageDescription, deprecated: 5.6)
convenience init(name: String?, url: String, requirement: Requirement) {
switch requirement {
case .localPackageItem:
self.init(name: name, path: url)
case .branchItem(let branch):
self.init(name: name, location: url, requirement: .branch(branch))
case .exactItem(let version):
self.init(name: name, location: url, requirement: .exact(version))
case .revisionItem(let revision):
self.init(name: name, location: url, requirement: .revision(revision))
case .rangeItem(let range):
self.init(name: name, location: url, requirement: .range(range))
}
}
init(kind: Kind) {
self.kind = kind
}
convenience init(name: String?, path: String) {
self.init(kind: .fileSystem(name: name, path: path))
}
convenience init(name: String?, location: String, requirement: SourceControlRequirement) {
self.init(kind: .sourceControl(name: name, location: location, requirement: requirement))
}
convenience init(id: String, requirement: RegistryRequirement) {
self.init(kind: .registry(id: id, requirement: requirement))
}
}
}
// MARK: - file system
extension Package.Dependency {
/// Adds a dependency to a package located at the given path.
///
/// The Swift Package Manager uses the package dependency as-is
/// and does not perform any source control access. Local package dependencies
/// are especially useful during development of a new package or when working
/// on multiple tightly coupled packages.
///
/// - Parameter path: The file system path to the package.
///
/// - Returns: A package dependency.
public static func package(
path: String
) -> Package.Dependency {
return .init(name: nil, path: path)
}
/// Adds a dependency to a package located at the given path on the filesystem.
///
/// Swift Package Manager uses the package dependency as-is and doesn't perform any source
/// control access. Local package dependencies are especially useful during
/// development of a new package or when working on multiple tightly coupled
/// packages.
///
/// - Parameters:
/// - name: The name of the Swift package or `nil` to deduce the name from path.
/// - path: The local path to the package.
///
/// - Returns: A package dependency.
@available(_PackageDescription, introduced: 5.2)
public static func package(
name: String,
path: String
) -> Package.Dependency {
return .init(name: name, path: path)
}
}
// MARK: - source control
extension Package.Dependency {
/// Adds a package dependency that uses the version requirement, starting with the given minimum version,
/// going up to the next major version.
///
/// This is the recommended way to specify a remote package dependency.
/// It allows you to specify the minimum version you require, allows updates that include bug fixes
/// and backward-compatible feature updates, but requires you to explicitly update to a new major version of the dependency.
/// This approach provides the maximum flexibility on which version to use,
/// while making sure you don't update to a version with breaking changes,
/// and helps to prevent conflicts in your dependency graph.
///
/// The following example allows the Swift Package Manager to select a version
/// like a `1.2.3`, `1.2.4`, or `1.3.0`, but not `2.0.0`.
///
///```swift
///.package(url: "https://example.com/example-package.git", from: "1.2.3"),
///```
///
/// - Parameters:
/// - url: The valid Git URL of the package.
/// - version: The minimum version requirement.
///
/// - Returns: A `Package.Dependency` instance.
public static func package(
url: String,
from version: Version
) -> Package.Dependency {
return .package(url: url, .upToNextMajor(from: version))
}
/// Adds a package dependency that uses the version requirement, starting
/// with the given minimum version, going up to the next major version.
///
/// This is the recommended way to specify a remote package dependency. It
/// allows you to specify the minimum version you require, allows updates
/// that include bug fixes and backward-compatible feature updates, but
/// requires you to explicitly update to a new major version of the
/// dependency. This approach provides the maximum flexibility on which
/// version to use, while making sure you don't update to a version with
/// breaking changes, and helps to prevent conflicts in your dependency
/// graph.
///
/// The following example allows the Swift package manager to select a
/// version like a `1.2.3`, `1.2.4`, or `1.3.0`, but not `2.0.0`.
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", from:
/// "1.2.3"),
/// ```
///
/// - Parameters:
/// - name: The name of the Swift package or `nil` to deduce the name from the package's Git URL.
/// - url: The valid Git URL of the package.
/// - version: The minimum version requirement.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.2, deprecated: 5.6, message: "use package(url:from:) instead")
public static func package(
name: String,
url: String,
from version: Version
) -> Package.Dependency {
return .package(name: name, url: url, .upToNextMajor(from: version))
}
/// Adds a remote package dependency given a branch requirement.
///
///```swift
/// .package(url: "https://example.com/example-package.git", branch: "main"),
/// ```
///
/// - Parameters:
/// - url: The valid Git URL of the package.
/// - branch: A dependency requirement. See static methods on ``Requirement-swift.enum`` for available options.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.5)
public static func package(
url: String,
branch: String
) -> Package.Dependency {
return .package(url: url, requirement: .branch(branch))
}
/// Adds a remote package dependency given a branch requirement.
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", branch: "main"),
/// ```
///
/// - Parameters:
/// - name: The name of the package, or nil to deduce it from the URL.
/// - url: The valid Git URL of the package.
/// - branch: A dependency requirement. See static methods on ``Requirement-swift.enum`` for available options.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.5, deprecated: 5.6, message: "use package(url:branch:) instead")
public static func package(
name: String,
url: String,
branch: String
) -> Package.Dependency {
return .package(name: name, url: url, requirement: .branch(branch))
}
/// Adds a remote package dependency given a revision requirement.
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", revision: "aa681bd6c61e22df0fd808044a886fc4a7ed3a65"),
/// ```
///
/// - Parameters:
/// - url: The valid Git URL of the package.
/// - revision: A dependency requirement. See static methods on ``Requirement-swift.enum`` for available options.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.5)
public static func package(
url: String,
revision: String
) -> Package.Dependency {
return .package(url: url, requirement: .revision(revision))
}
/// Adds a remote package dependency given a revision requirement.
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", revision: "aa681bd6c61e22df0fd808044a886fc4a7ed3a65"),
/// ```
///
/// - Parameters:
/// - name: The name of the package, or nil to deduce it from the URL.
/// - url: The valid Git URL of the package.
/// - revision: A dependency requirement. See static methods on ``Requirement-swift.enum`` for available options.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.5, deprecated: 5.6, message: "use package(url:revision:) instead")
public static func package(
name: String,
url: String,
revision: String
) -> Package.Dependency {
return .package(name: name, url: url, requirement: .revision(revision))
}
/// Adds a package dependency starting with a specific minimum version, up to
/// but not including a specified maximum version.
///
/// The following example allows the Swift Package Manager to pick
/// versions `1.2.3`, `1.2.4`, `1.2.5`, but not `1.2.6`.
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", "1.2.3"..<"1.2.6"),
/// ```
///
/// - Parameters:
/// - name: The name of the package, or nil to deduce it from the URL.
/// - url: The valid Git URL of the package.
/// - range: The custom version range requirement.
///
/// - Returns: A `Package.Dependency` instance.
public static func package(
url: String,
_ range: Range<Version>
) -> Package.Dependency {
return .package(name: nil, url: url, requirement: .range(range))
}
/// Adds a package dependency starting with a specific minimum version, up to
/// but not including a specified maximum version.
///
/// The following example allows the Swift Package Manager to pick
/// versions `1.2.3`, `1.2.4`, `1.2.5`, but not `1.2.6`.
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", "1.2.3"..<"1.2.6"),
/// ```
///
/// - Parameters:
/// - name: The name of the package, or `nil` to deduce it from the URL.
/// - url: The valid Git URL of the package.
/// - range: The custom version range requirement.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.2, deprecated: 5.6, message: "use package(url:_:) instead")
public static func package(
name: String,
url: String,
_ range: Range<Version>
) -> Package.Dependency {
return .package(name: name, url: url, requirement: .range(range))
}
/// Adds a package dependency starting with a specific minimum version, going
/// up to and including a specific maximum version.
///
/// The following example allows the Swift Package Manager to pick
/// versions 1.2.3, 1.2.4, 1.2.5, as well as 1.2.6.
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", "1.2.3"..."1.2.6"),
/// ```
///
/// - Parameters:
/// - name: The name of the package, or `nil` to deduce it from the URL.
/// - url: The valid Git URL of the package.
/// - range: The closed version range requirement.
///
/// - Returns: A `Package.Dependency` instance.
public static func package(
url: String,
_ range: ClosedRange<Version>
) -> Package.Dependency {
return .package(name: nil, url: url, closedRange: range)
}
/// Adds a package dependency starting with a specific minimum version, going
/// up to and including a specific maximum version.
///
/// The following example allows the Swift Package Manager to pick
/// versions 1.2.3, 1.2.4, 1.2.5, as well as 1.2.6.
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", "1.2.3"..."1.2.6"),
/// ```
///
/// The following example allows the Swift Package Manager to pick
/// versions between 1.0.0 and 2.0.0
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", .upToNextMajor(from: "1.0.0"),
/// ```
///
/// The following example allows the Swift Package Manager to pick
/// versions between 1.0.0 and 1.1.0
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", .upToNextMinor(from: "1.0.0"),
/// ```
///
/// - Parameters:
/// - name: The name of the package, or `nil` to deduce it from the URL.
/// - url: The valid Git URL of the package.
/// - range: The closed version range requirement.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.2, deprecated: 5.6, message: "use package(url:_:) instead")
public static func package(
name: String,
url: String,
_ range: ClosedRange<Version>
) -> Package.Dependency {
return .package(name: name, url: url, closedRange: range)
}
/// Adds a package dependency starting with a specific minimum version, going
/// up to and including a specific maximum version.
///
/// The following example allows the Swift Package Manager to pick
/// versions 1.2.3, 1.2.4, 1.2.5, as well as 1.2.6.
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", "1.2.3"..."1.2.6"),
/// ```
///
/// - Parameters:
/// - name: The name of the package, or `nil` to deduce it from the URL.
/// - url: The valid Git URL of the package.
/// - range: The closed version range requirement.
///
/// - Returns: A `Package.Dependency` instance.
private static func package(
name: String?,
url: String,
closedRange: ClosedRange<Version>
) -> Package.Dependency {
// Increase upperbound's patch version by one.
let upper = closedRange.upperBound
let upperBound = Version(
upper.major, upper.minor, upper.patch + 1,
prereleaseIdentifiers: upper.prereleaseIdentifiers,
buildMetadataIdentifiers: upper.buildMetadataIdentifiers)
return .package(name: name, url: url, requirement: .range(closedRange.lowerBound ..< upperBound))
}
/// Adds a package dependency that uses the exact version requirement.
///
/// Specifying exact version requirements are not recommended as
/// they can cause conflicts in your dependency graph when other packages depend on this package.
/// As Swift packages follow the semantic versioning convention,
/// think about specifying a version range instead.
///
/// The following example instructs the Swift Package Manager to use version `1.2.3`.
///
/// ```swift
/// .package(url: "https://example.com/example-package.git", exact: "1.2.3"),
/// ```
///
/// - Parameters:
/// - url: The valid Git URL of the package.
/// - version: The exact version of the dependency for this requirement.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.6)
public static func package(
url: String,
exact version: Version
) -> Package.Dependency {
return .package(url: url, requirement: .exact(version))
}
/// Adds a remote package dependency given a version requirement.
///
/// - Parameters:
/// - name: The name of the package, or nil to deduce it from the URL.
/// - url: The valid Git URL of the package.
/// - requirement: A dependency requirement. See static methods on `Package.Dependency.Requirement` for available options.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, deprecated: 5.6, message: "use specific requirement APIs instead (e.g. use 'branch:' instead of '.branch')")
public static func package(
url: String,
_ requirement: Package.Dependency.Requirement
) -> Package.Dependency {
return .package(name: nil, url: url, requirement)
}
/// Adds a remote package dependency with a given version requirement.
///
/// - Parameters:
/// - name: The name of the Swift package or `nil` to deduce the name from the package's Git URL.
/// - url: The valid Git URL of the package.
/// - requirement: A dependency requirement. See static methods on
/// ``Package/Dependency/Requirement-swift.enum`` for available options.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.2, deprecated: 5.6, message: "use specific requirement APIs instead (e.g. use 'branch:' instead of '.branch')")
public static func package(
name: String?,
url: String,
_ requirement: Package.Dependency.Requirement
) -> Package.Dependency {
precondition(!requirement.isLocalPackage, "Use `.package(path:)` API to declare a local package dependency")
return .init(name: name, url: url, requirement: requirement)
}
// intentionally private to hide enum detail
private static func package(
name: String? = nil,
url: String,
requirement: Package.Dependency.SourceControlRequirement
) -> Package.Dependency {
return .init(name: name, location: url, requirement: requirement)
}
}
// MARK: - registry
extension Package.Dependency {
/// Adds a package dependency that uses the version requirement, starting with the given minimum version,
/// going up to the next major version.
///
/// This is the recommended way to specify a remote package dependency.
/// It allows you to specify the minimum version you require, allows updates that include bug fixes
/// and backward-compatible feature updates, but requires you to explicitly update to a new major version of the dependency.
/// This approach provides the maximum flexibility on which version to use,
/// while making sure you don't update to a version with breaking changes,
/// and helps to prevent conflicts in your dependency graph.
///
/// The following example allows the Swift Package Manager to select a version
/// like a `1.2.3`, `1.2.4`, or `1.3.0`, but not `2.0.0`.
///
/// ```swift
/// .package(id: "scope.name", from: "1.2.3"),
/// ```
///
/// - Parameters:
/// - id: The identity of the package.
/// - version: The minimum version requirement.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.7)
public static func package(
id: String,
from version: Version
) -> Package.Dependency {
return .package(id: id, .upToNextMajor(from: version))
}
/// Adds a package dependency that uses the exact version requirement.
///
/// Specifying exact version requirements are not recommended as
/// they can cause conflicts in your dependency graph when multiple other packages depend on a package.
/// Because Swift packages follow the semantic versioning convention,
/// think about specifying a version range instead.
///
/// The following example instructs the Swift Package Manager to use version `1.2.3`.
///
/// ```swift
/// .package(id: "scope.name", exact: "1.2.3"),
/// ```
///
/// - Parameters:
/// - id: The identity of the package.
/// - version: The exact version of the dependency for this requirement.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.7)
public static func package(
id: String,
exact version: Version
) -> Package.Dependency {
return .package(id: id, requirement: .exact(version))
}
/// Adds a package dependency starting with a specific minimum version, up to
/// but not including a specified maximum version.
///
/// The following example allows the Swift Package Manager to pick
/// versions `1.2.3`, `1.2.4`, `1.2.5`, but not `1.2.6`.
///
/// ```swift
/// .package(id: "scope.name", "1.2.3"..<"1.2.6"),
/// ```
///
/// The following example allows the Swift Package Manager to pick
/// versions between 1.0.0 and 2.0.0
///
/// ```swift
/// .package(id: "scope.name", .upToNextMajor(from: "1.0.0"),
/// ```
///
/// The following example allows the Swift Package Manager to pick
/// versions between 1.0.0 and 1.1.0
///
/// ```swift
/// .package(id: "scope.name", .upToNextMinor(from: "1.0.0"),
/// ```
///
/// - Parameters:
/// - id: The identity of the package.
/// - range: The custom version range requirement.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.7)
public static func package(
id: String,
_ range: Range<Version>
) -> Package.Dependency {
return .package(id: id, requirement: .range(range))
}
/// Adds a package dependency starting with a specific minimum version, going
/// up to and including a specific maximum version.
///
/// The following example allows the Swift Package Manager to pick
/// versions 1.2.3, 1.2.4, 1.2.5, as well as 1.2.6.
///
/// ```swift
/// .package(id: "scope.name", "1.2.3"..."1.2.6"),
/// ```
///
/// - Parameters:
/// - id: The identity of the package.
/// - range: The closed version range requirement.
///
/// - Returns: A `Package.Dependency` instance.
@available(_PackageDescription, introduced: 5.7)
public static func package(
id: String,
_ range: ClosedRange<Version>
) -> Package.Dependency {
// Increase upperbound's patch version by one.
let upper = range.upperBound
let upperBound = Version(
upper.major, upper.minor, upper.patch + 1,
prereleaseIdentifiers: upper.prereleaseIdentifiers,
buildMetadataIdentifiers: upper.buildMetadataIdentifiers)
return .package(id: id, range.lowerBound ..< upperBound)
}
// intentionally private to hide enum detail
@available(_PackageDescription, introduced: 5.7)
private static func package(
id: String,
requirement: Package.Dependency.RegistryRequirement
) -> Package.Dependency {
let pattern = #"\A[a-zA-Z\d](?:[a-zA-Z\d]|-(?=[a-zA-Z\d])){0,38}\.[a-zA-Z0-9](?:[a-zA-Z0-9]|[-_](?=[a-zA-Z0-9])){0,99}\z"#
if id.range(of: pattern, options: .regularExpression) == nil {
errors.append("Invalid package identifier: '\(id)'")
}
return .init(id: id, requirement: requirement)
}
}
// MARK: - common APIs used by mistake as unavailable to provide better error messages.
extension Package.Dependency {
@available(*, unavailable, message: "use package(url:exact:) instead")
public static func package(url: String, version: Version) -> Package.Dependency {
fatalError()
}
@available(*, unavailable, message: "use package(url:_:) instead")
public static func package(url: String, range: Range<Version>) -> Package.Dependency {
fatalError()
}
}