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//===---------- CompiledSourceCollector.swift - Swift Testing -------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2021 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
//
//===----------------------------------------------------------------------===//
import XCTest
import TSCBasic
@_spi(Testing) import SwiftDriver
import SwiftOptions
import TestUtilities
/// Creates a `DiagnosticsEngine` that collects which sources were compiled.
///
/// - seealso: Test
struct CompiledSourceCollector {
private var collectedCompiledBasenames = [String]()
private var collectedReadDependencies = Set<String>()
private func getCompiledBasenames(from d: Diagnostic) -> [String] {
let dd = d.description
guard let startOfSources = dd.range(of: "Starting Compiling ")?.upperBound
else {
return []
}
return dd.suffix(from: startOfSources)
.split(separator: ",")
.map {$0.drop(while: {$0 == " "})}
.map { (s: Substring) -> Substring in
assert(s.hasSuffix(".swift"))
return s
}
.compactMap {String($0)}
}
private func getReadDependencies(from d: Diagnostic) -> String? {
let dd = d.description
guard let startOfReading = dd.range(of: "Reading dependencies ")?.upperBound
else {
return nil
}
return String(dd.suffix(from: startOfReading))
}
private mutating func appendReadDependency(_ dep: String) {
let wasNew = collectedReadDependencies.insert(dep).inserted
guard wasNew || dep.hasSuffix(FileType.swift.rawValue)
else {
XCTFail("Swiftmodule \(dep) read twice")
return
}
}
/// Process a diagnostic
mutating func handle(diagnostic d: Diagnostic) {
collectedCompiledBasenames.append(contentsOf: getCompiledBasenames(from: d))
getReadDependencies(from: d).map {appendReadDependency($0)}
}
/// Returns the basenames of the compiled files, e.g. for `/a/b/foo.swift`, returns `foo.swift`.
var compiledBasenames: [String] {
XCTAssertEqual(Set(collectedCompiledBasenames).count, collectedCompiledBasenames.count,
"No file should be compiled twice")
return collectedCompiledBasenames
}
}
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