mirror of
https://github.com/apple/sourcekit-lsp.git
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f9f13a4105
Replace usages of `Optional.map` and `Optional.flatMap` by if expressions or other expressions. I personally find `Optional.map` to be hard to read because `map` implies mapping a collection to me. Usually the alternative constructs seem clearer to me.
121 lines
3.5 KiB
Swift
121 lines
3.5 KiB
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2024 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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package import ArgumentParser
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import Foundation
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import ToolchainRegistry
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import struct TSCBasic.AbsolutePath
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import class TSCBasic.Process
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import class TSCUtility.PercentProgressAnimation
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package struct ReduceFrontendCommand: AsyncParsableCommand {
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package static let configuration: CommandConfiguration = CommandConfiguration(
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commandName: "reduce-frontend",
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abstract: "Reduce a single swift-frontend crash"
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)
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#if canImport(Darwin)
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// Creating an NSPredicate from a string is not supported in corelibs-foundation.
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@Option(
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help: """
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If the sourcekitd response matches this predicate, consider it as reproducing the issue.
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sourcekitd crashes are always considered as reproducers.
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The predicate is an NSPredicate. `stdout` and `stderr` are standard output and standard error of the \
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swift-frontend execution, respectively.
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Example:
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- stderr CONTAINS "failed to produce diagnostic for expression"
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"""
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)
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var predicate: String?
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private var nsPredicate: NSPredicate? {
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guard let predicate else {
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return nil
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}
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return NSPredicate(format: predicate)
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}
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#else
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private var nsPredicate: NSPredicate? { nil }
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#endif
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@Option(
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name: .customLong("toolchain"),
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help: """
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The toolchain used to reduce the swift-frontend issue. \
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If not specified, the toolchain is found in the same way that sourcekit-lsp finds it
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"""
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)
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var toolchainOverride: String?
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@Option(
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parsing: .remaining,
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help: """
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The swift-frontend arguments that exhibit the issue that should be reduced.
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"""
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)
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var frontendArgs: [String]
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@MainActor
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var toolchain: Toolchain? {
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get async throws {
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if let toolchainOverride {
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return Toolchain(URL(fileURLWithPath: toolchainOverride))
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}
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return await ToolchainRegistry(installPath: Bundle.main.bundleURL).default
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}
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}
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package init() {}
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@MainActor
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package func run() async throws {
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guard let sourcekitd = try await toolchain?.sourcekitd else {
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throw GenericError("Unable to find sourcekitd.framework")
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}
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guard let swiftFrontend = try await toolchain?.swiftFrontend else {
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throw GenericError("Unable to find swift-frontend")
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}
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let progressBar = PercentProgressAnimation(
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stream: stderrStreamConcurrencySafe,
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header: "Reducing swift-frontend crash"
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)
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let executor = OutOfProcessSourceKitRequestExecutor(
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sourcekitd: sourcekitd,
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pluginPaths: nil,
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swiftFrontend: swiftFrontend,
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reproducerPredicate: nsPredicate
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)
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defer {
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progressBar.complete(success: true)
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}
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let reducedRequestInfo = try await reduceFrontendIssue(
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frontendArgs: frontendArgs,
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using: executor
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) { progress, message in
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progressBar.update(step: Int(progress * 100), total: 100, text: message)
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}
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print("Reduced compiler arguments:")
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print(reducedRequestInfo.compilerArgs.joined(separator: " "))
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print("")
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print("Reduced file contents:")
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print(reducedRequestInfo.fileContents)
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}
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}
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