strips/darwin-apk
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basic package graph implemented

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a dinosaur
2024-11-11 21:06:37 +11:00
parent af87395545
commit cf5e1a3f35
10 changed files with 240 additions and 61 deletions
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29
Sources/apk/Common/ApkRequirement.swift
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@ -5,8 +5,16 @@
import Foundation
internal struct ApkRequirement {
static func extract(blob extract: String) throws(ParseError) -> (String, ApkVersionSpecification) {
internal struct ApkRequirement: Hashable {
let name: String
let versionSpec: ApkVersionSpecification
init(name: String, spec: ApkVersionSpecification) {
self.name = name
self.versionSpec = spec
}
init(extract: String) throws(ParseError) {
var comparer: ComparatorBits = []
var dependStr = extract[...]
let nameEnd: String.Index, versionStart: String.Index
@ -30,7 +38,7 @@ internal struct ApkRequirement {
}
(nameEnd, versionStart) = (range.lowerBound, range.upperBound)
} else {
//
// Lack of conflict flag indicates any version
if !comparer.contains(.conflict) {
comparer.formUnion(.any)
}
@ -38,9 +46,18 @@ internal struct ApkRequirement {
}
// Parse version specification
let spec = try ApkVersionSpecification(comparer, version: dependStr[versionStart...])
let name = String(dependStr[..<nameEnd])
return (name, spec)
self.versionSpec = try ApkVersionSpecification(comparer, version: dependStr[versionStart...])
self.name = String(dependStr[..<nameEnd])
}
}
extension ApkRequirement: CustomStringConvertible {
var description: String {
switch self.versionSpec {
case .any: self.name
case .conflict: "!\(self.name)"
case .constraint(let op, let version): "\(self.name)\(op)\(version)"
}
}
}