Hey everyone, I am poking around Swift compiler to see if I am able to get a full AST out to do some preliminary code sanity check and dead code cleanup. So I was looking at open source SourceKitten <https://github.com/jpsim/SourceKitten> to see if I can retrieve a full AST from it, however, I was not able to enough information from it. So I dug a bit deeper into its dependency SourceKit <https://github.com/apple/swift/tree/master/tools/SourceKit> source code and am poking around the sourcekitd-test scheme.
With the guidance of the Protocol.md <https://github.com/apple/swift/blob/master/tools/SourceKit/docs/Protocol.md> file, I am able to talk to SourceKit daemon with Indexing request and Documentation request with a single file. In order to get a full resolution of the code base, I thought passing in all compiler args would help. So I pass in all the compiler args to the sourcekit request based on the command spit out by *xcodebuild*, however, the results became <<NULL>> :( *[MinimalSwiftApplication is a minimal iOS app with 3 Swift files]* { key.request: source.request.docinfo, key.compilerargs: [ "-module-name", "MinimalSwiftApplication", "-Xfrontend", "-c", "-sdk", "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.3.sdk", "-target", "x86_64-apple-ios10.3", "/Users/khu/ios/MinimalSwiftApplication/MinimalSwiftApplication/ViewController.swift", "/Users/khu/ios/MinimalSwiftApplication/MinimalSwiftApplication/AppDelegate.swift", "/Users/khu/ios/MinimalSwiftApplication/MinimalSwiftApplication/Car.swift", "-emit-module", "-emit-module-path", "/Users/khu/ios/MinimalSwiftApplication/build/MinimalSwiftApplication.build/Release-iphonesimulator/MinimalSwiftApplication.build/Objects-normal/x86_64/MinimalSwiftApplication.swiftmodule", "-Xcc", "-I/Users/khu/ios/MinimalSwiftApplication/build/MinimalSwiftApplication.build/Release-iphonesimulator/MinimalSwiftApplication.build/swift-overrides.hmap", "-Xcc", "-iquote", "-Xcc", "/Users/khu/ios/MinimalSwiftApplication/build/MinimalSwiftApplication.build/Release-iphonesimulator/MinimalSwiftApplication.build/MinimalSwiftApplication-generated-files.hmap", "-Xcc", "-I/Users/khu/ios/MinimalSwiftApplication/build/MinimalSwiftApplication.build/Release-iphonesimulator/MinimalSwiftApplication.build/MinimalSwiftApplication-own-target-headers.hmap", "-Xcc", "-I/Users/khu/ios/MinimalSwiftApplication/build/MinimalSwiftApplication.build/Release-iphonesimulator/MinimalSwiftApplication.build/MinimalSwiftApplication-all-target-headers.hmap", "-Xcc", "-iquote", "-Xcc", "/Users/khu/ios/MinimalSwiftApplication/build/MinimalSwiftApplication.build/Release-iphonesimulator/MinimalSwiftApplication.build/MinimalSwiftApplication-project-headers.hmap", "-Xcc", "-I/Users/khu/ios/MinimalSwiftApplication/build/Release-iphonesimulator/include", "-Xcc", "-I/Users/khu/ios/MinimalSwiftApplication/build/MinimalSwiftApplication.build/Release-iphonesimulator/MinimalSwiftApplication.build/DerivedSources/x86_64", "-Xcc", "-I/Users/khu/ios/MinimalSwiftApplication/build/MinimalSwiftApplication.build/Release-iphonesimulator/MinimalSwiftApplication.build/DerivedSources", "-emit-objc-header", "-emit-objc-header-path", "/Users/khu/ios/MinimalSwiftApplication/build/MinimalSwiftApplication.build/Release-iphonesimulator/MinimalSwiftApplication.build/Objects-normal/x86_64/MinimalSwiftApplication-Swift.h", "-Xcc", "-working-directory/Users/khu/ios/MinimalSwiftApplication", "-D", "DEBUG" ], key.sourcefile: "/Users/khu/ios/MinimalSwiftApplication/MinimalSwiftApplication/ViewController.swift" } [ ] <<NULL>> Program ended with exit code: 0 *Besides this, I have another two questions.* 1. The information from doc and index request's response is quite scattered. Is that *possible* to resolve a full AST of the code base from SourceKit framework (like the Program Structure Interface <http://www.jetbrains.org/intellij/sdk/docs/basics/architectural_overview/psi_files.html> format in Intellij)? 2. Debug sourcekitd-test is easy, is there any guidance to debug the sourcekitd? Basically how to spin off another sourcekitd and debug that. Thanks! Keqiu
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