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//===-------------------- SwiftSourceFile.swift - Incremental -------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
/// Because the incremental compilation system treats files containing Swift source code specially,
/// it is helpful to statically distinguish them wherever an input must be swift source code.
public struct SwiftSourceFile: Hashable {
// must be .swift
public let fileHandle: VirtualPath.Handle
public init(_ fileHandle: VirtualPath.Handle) {
self.fileHandle = fileHandle
}
public init(_ path: TypedVirtualPath) {
assert(path.type == .swift)
self.init(path.fileHandle)
}
public init?(ifSource path: TypedVirtualPath) {
guard path.type == .swift else { return nil }
self.init(path)
}
public init(_ path: VirtualPath) {
assert(path.name.hasSuffix(".\(FileType.swift.rawValue)"))
self.init(path.intern())
}
public var typedFile: TypedVirtualPath {
TypedVirtualPath(file: fileHandle, type: .swift)
}
}
public extension Sequence where Element == TypedVirtualPath {
var swiftSourceFiles: [SwiftSourceFile] {
compactMap(SwiftSourceFile.init(ifSource:))
}
}
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