diff options
Diffstat (limited to 'Sources/WmapParser/DependencyParser.swift')
| -rw-r--r-- | Sources/WmapParser/DependencyParser.swift | 89 |
1 files changed, 47 insertions, 42 deletions
diff --git a/Sources/WmapParser/DependencyParser.swift b/Sources/WmapParser/DependencyParser.swift index 891be01..2567bfe 100644 --- a/Sources/WmapParser/DependencyParser.swift +++ b/Sources/WmapParser/DependencyParser.swift @@ -1,52 +1,57 @@ extension WmapParser { - /// Looks for -- or ->. If found, returns where this arrow starts. - @inline(__always) - static func hasDependency<T: Collection>(_ bytes: T, _ start: Int, _ end: Int) -> Int? - where T.Element == UInt8, T.Index == Int { - var index = start - while index < end { - if bytes[index] == kOpenParenthesis { return nil } - if bytes[index] == kDash && index + 1 < end { - let next = bytes[index + 1] - if next == kGreaterThan || next == kDash { return index } - } - index += 1 + /// Looks for -- or ->. If found, returns where this arrow starts. + @inline(__always) + static func hasDependency<T: Collection>(_ bytes: T, _ start: Int, _ end: Int) -> Int? + where T.Element == UInt8, T.Index == Int { + var index = start + while index < end { + if bytes[index] == kOpenParenthesis { return nil } + if bytes[index] == kDash && index + 1 < end { + let next = bytes[index + 1] + if next == kGreaterThan || next == kDash { return index } } - return nil + index += 1 } + return nil + } - /// Finds a dependency and whether it's directed. It assumes we previously - /// checked for the location of our separator to speed things up. - static func parseDependency<T: Collection>(_ bytes: T, _ start: Int, _ end: Int, _ separatorIndex: Int) - -> Dependency? - where T.Element == UInt8, T.Index == Int { - guard let isDirected = extractIsDirected(bytes, separatorIndex, end) else { - return nil - } - - guard let fromComponent = extractTrimmedString(bytes, start, separatorIndex) else { - return nil - } + /// Finds a dependency and whether it's directed. It assumes we previously + /// checked for the location of our separator to speed things up. + static func parseDependency<T: Collection>( + _ bytes: T, _ start: Int, _ end: Int, _ separatorIndex: Int + ) + -> Dependency? + where T.Element == UInt8, T.Index == Int { + guard let isDirected = extractIsDirected(bytes, separatorIndex, end) else { + return nil + } - guard let toComponent = extractTrimmedString(bytes, separatorIndex + 2, end) else { - return nil - } + guard let fromComponent = extractTrimmedString(bytes, start, separatorIndex) else { + return nil + } - return Dependency(fromComponent: fromComponent, toComponent: toComponent, isDirected: isDirected) + guard let toComponent = extractTrimmedString(bytes, separatorIndex + 2, end) else { + return nil } - /// Checks the second character of the separator to see if it's directed. - /// It assumes we already checked for -- or ->, so it only checks for - /// Whether it's greaterThan or not. - @inline(__always) - private static func extractIsDirected<T: Collection>(_ bytes: T, _ separatorIndex: Int, _ end: Int) - -> Bool? - where T.Element == UInt8, T.Index == Int { - let followingCharacter = separatorIndex + 1 - guard followingCharacter < end else { return nil } - if bytes[followingCharacter] == kGreaterThan { - return true - } - return false + return Dependency( + fromComponent: fromComponent, toComponent: toComponent, isDirected: isDirected) + } + + /// Checks the second character of the separator to see if it's directed. + /// It assumes we already checked for -- or ->, so it only checks for + /// Whether it's greaterThan or not. + @inline(__always) + private static func extractIsDirected<T: Collection>( + _ bytes: T, _ separatorIndex: Int, _ end: Int + ) + -> Bool? + where T.Element == UInt8, T.Index == Int { + let followingCharacter = separatorIndex + 1 + guard followingCharacter < end else { return nil } + if bytes[followingCharacter] == kGreaterThan { + return true } + return false + } } |