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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 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 Dispatch
import SwiftParser
import SwiftParserDiagnostics
import SwiftSyntax
import XCTest
import _SwiftSyntaxTestSupport
class ParserTests: ParserTestCase {
/// Run a single parse test.
static func runParseTest(fileURL: URL, checkDiagnostics: Bool) throws {
let fileContents = try Data(contentsOf: fileURL)
let parsed = fileContents.withUnsafeBytes({ buffer in
// Release builds are fine with the default maximum nesting level of 256.
// Debug builds overflow with any stack size bigger than 20-ish.
Parser.parse(source: buffer.bindMemory(to: UInt8.self), maximumNestingLevel: 20)
})
assertDataEqualWithDiff(
Data(parsed.syntaxTextBytes),
fileContents,
additionalInfo: "Failed in file \(fileURL)"
)
if !checkDiagnostics {
return
}
let diagnostics = ParseDiagnosticsGenerator.diagnostics(for: parsed)
if !diagnostics.isEmpty {
var locationAndDiagnostics: [String] = []
let locationConverter = SourceLocationConverter(fileName: fileURL.lastPathComponent, tree: parsed)
for diag in diagnostics {
let location = diag.location(converter: locationConverter)
let message = diag.message
locationAndDiagnostics.append("\(location): \(message)")
}
XCTFail(
"""
Received the following diagnostics while parsing \(fileURL)
\(locationAndDiagnostics.joined(separator: "\n"))
"""
)
}
}
/// Run parser tests on all of the Swift files in the given path, recursively.
func runParserTests(
name: String,
path: URL,
checkDiagnostics: Bool,
shouldExclude: @Sendable (URL) -> Bool = { _ in false }
) {
// nonisolated(unsafe) because [URL] is not marked Sendable on Linux.
let fileURLs = FileManager.default
.enumerator(at: path, includingPropertiesForKeys: nil)!
.compactMap({ $0 as? URL })
.filter {
$0.pathExtension == "swift"
|| $0.pathExtension == "sil"
|| $0.pathExtension == "swiftinterface"
}
print("\(name) - processing \(fileURLs.count) source files")
DispatchQueue.concurrentPerform(iterations: fileURLs.count) { fileURLIndex in
let fileURL = fileURLs[fileURLIndex]
if shouldExclude(fileURL) {
return
}
do {
try Self.runParseTest(fileURL: fileURL, checkDiagnostics: checkDiagnostics)
} catch {
XCTFail("\(name): \(fileURL) failed due to \(error)")
}
}
}
let packageDir = URL(fileURLWithPath: #filePath)
.deletingLastPathComponent()
.deletingLastPathComponent()
.deletingLastPathComponent()
func testSelfParse() throws {
// Allow skipping the self parse test in local development environments
// because it takes very long compared to all the other tests.
try XCTSkipIf(longTestsDisabled)
let currentDir =
packageDir
.appendingPathComponent("Sources")
runParserTests(
name: "Self-parse tests",
path: currentDir,
checkDiagnostics: true
)
}
/// Test all of the files in the "test" directory of the main Swift compiler.
/// This requires the Swift compiler to have been checked out into the "swift"
/// directory alongside swift-syntax.
func testSwiftTestsuite() throws {
try XCTSkipIf(longTestsDisabled)
let testDir =
packageDir
.deletingLastPathComponent()
.appendingPathComponent("swift")
.appendingPathComponent("test")
runParserTests(
name: "Swift tests",
path: testDir,
checkDiagnostics: false
)
}
/// Test all of the files in the "validation-text" directory of the main
/// Swift compiler. This requires the Swift compiler to have been checked
/// out into the "swift" directory alongside swift-syntax.
func testSwiftValidationTestsuite() throws {
try XCTSkipIf(longTestsDisabled)
let testDir =
packageDir
.deletingLastPathComponent()
.appendingPathComponent("swift")
.appendingPathComponent("validation-test")
runParserTests(
name: "Swift validation tests",
path: testDir,
checkDiagnostics: false
)
}
}
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