/
Triple+Basics.swift
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/
Triple+Basics.swift
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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift 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 http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import enum TSCBasic.JSON
import class TSCBasic.Process
extension Triple {
public init(_ description: String) throws {
self.init(description, normalizing: false)
}
}
extension Triple {
public static let macOS = try! Self("x86_64-apple-macosx")
}
extension Triple {
public var isWasm: Bool {
[.wasm32, .wasm64].contains(self.arch)
}
public func isApple() -> Bool {
vendor == .apple
}
public func isAndroid() -> Bool {
os == .linux && environment == .android
}
public func isDarwin() -> Bool {
switch (vendor, os) {
case (.apple, .noneOS):
return false
case (.apple, _), (_, .macosx), (_, .darwin):
return true
default:
return false
}
}
public func isLinux() -> Bool {
os == .linux
}
public func isWindows() -> Bool {
os == .win32
}
public func isWASI() -> Bool {
os == .wasi
}
public func isOpenBSD() -> Bool {
os == .openbsd
}
/// Returns the triple string for the given platform version.
///
/// This is currently meant for Apple platforms only.
public func tripleString(forPlatformVersion version: String) -> String {
precondition(isDarwin())
return """
\(self.archName)-\
\(self.vendorName)-\
\(self.osNameUnversioned)\(version)\
\(self.environmentName.isEmpty ? "" : "-\(self.environmentName)")
"""
}
public var tripleString: String {
self.triple
}
/// Determine the versioned host triple using the Swift compiler.
public static func getHostTriple(usingSwiftCompiler swiftCompiler: AbsolutePath) throws -> Triple {
// Call the compiler to get the target info JSON.
let compilerOutput: String
do {
let result = try Process.popen(args: swiftCompiler.pathString, "-print-target-info")
compilerOutput = try result.utf8Output().spm_chomp()
} catch {
throw InternalError("Failed to get target info (\(error.interpolationDescription))")
}
// Parse the compiler's JSON output.
let parsedTargetInfo: JSON
do {
parsedTargetInfo = try JSON(string: compilerOutput)
} catch {
throw InternalError(
"Failed to parse target info (\(error.interpolationDescription)).\nRaw compiler output: \(compilerOutput)"
)
}
// Get the triple string from the parsed JSON.
let tripleString: String
do {
tripleString = try parsedTargetInfo.get("target").get("triple")
} catch {
throw InternalError(
"Target info does not contain a triple string (\(error.interpolationDescription)).\nTarget info: \(parsedTargetInfo)"
)
}
// Parse the triple string.
do {
return try Triple(tripleString)
} catch {
throw InternalError(
"Failed to parse triple string (\(error.interpolationDescription)).\nTriple string: \(tripleString)"
)
}
}
}
extension Triple {
/// The file prefix for dynamic libraries
public var dynamicLibraryPrefix: String {
switch os {
case .win32:
return ""
default:
return "lib"
}
}
/// The file extension for dynamic libraries (eg. `.dll`, `.so`, or `.dylib`)
public var dynamicLibraryExtension: String {
guard let os = self.os else {
fatalError("Cannot create dynamic libraries unknown os.")
}
switch os {
case _ where isDarwin():
return ".dylib"
case .linux, .openbsd:
return ".so"
case .win32:
return ".dll"
case .wasi:
return ".wasm"
default:
return ".so"
}
}
public var executableExtension: String {
guard !self.isWasm else {
return ".wasm"
}
guard let os = self.os else {
return ""
}
switch os {
case _ where isDarwin():
return ""
case .linux, .openbsd:
return ""
case .win32:
return ".exe"
case .noneOS:
return ""
default:
return ""
}
}
/// The file extension for static libraries.
public var staticLibraryExtension: String {
".a"
}
/// The file extension for Foundation-style bundle.
public var nsbundleExtension: String {
switch os {
case _ where isDarwin():
return ".bundle"
default:
// See: https://github.com/apple/swift-corelibs-foundation/blob/master/Docs/FHS%20Bundles.md
return ".resources"
}
}
/// Returns `true` if code compiled for `triple` can run on `self` value of ``Triple``.
public func isRuntimeCompatible(with triple: Triple) -> Bool {
guard self != triple else {
return true
}
if
self.arch == triple.arch &&
self.vendor == triple.vendor &&
self.os == triple.os &&
self.environment == triple.environment
{
return self.osVersion >= triple.osVersion
} else {
return false
}
}
}
extension Triple: CustomStringConvertible {
public var description: String { tripleString }
}
extension Triple: Equatable {
public static func ==(lhs: Triple, rhs: Triple) -> Bool {
lhs.arch == rhs.arch
&& lhs.vendor == rhs.vendor
&& lhs.os == rhs.os
&& lhs.environment == rhs.environment
&& lhs.osVersion == rhs.osVersion
}
}