💥 Custom Playgrounds 🎯

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! CUSTOM PLAYGROUNDS " SWIFTCRUNCH, JULY 2014 BORIS BÜGLING - @NEONACHO

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COCOAPODS - CONTENTFUL

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SWIFT?

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SWIFT!

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REPL

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$ swift Welcome to Swift! Type :help for assistance. 1> import ContentfulDeliveryAPI :1:8: error: no such module 'ContentfulDeliveryAPI' import ContentfulDeliveryAPI ^

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Copy your framework over to /Applications/Xcode6-Beta2.app/ Contents/Developer/Platforms/MacOSX.platform/Developer/ SDKs/MacOSX10.10.sdk/System/Library/Frameworks

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1> import ContentfulDeliveryAPI 2> var client = CDAClient() client: CDAClient = error: Couldn't lookup symbols: _OBJC_CLASS_$_CDAClient

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LOAD THE DYNAMIC LIBRARY FROM YOUR FRAMEWORK USING dlopen()

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3> var handle = dlopen("/Applications/.../Versions/A/ContentfulDeliveryAPI", 2) handle: COpaquePointer = Builtin.RawPointer = 0x0000000102e2b6e0 -> 0x00007fff5fc37e50 vtable for ImageLoaderMachOCompressed + 16 4> var client = CDAClient() client: CDAClient = {}

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SUCCESS

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// Playground - noun: a place where people can play

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24/06/14 01:00:00,780 Xcode[84816]: IDEPlaygroundExecutionSessionThread(pid=85188) IDEPlaygroundExecution: [PlaygroundSession <0x7fff12750c70>] Received error from expr: error: error: Couldn't lookup symbols: _OBJC_CLASS_$_CDAClient

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SAM MARSHALL

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XCODE PLUGIN?

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DVTPLAYGROUNDCOMMUNICATION.FRAMEWORK @interface DVTPlaygroundCommunicationListener { NSString *_socketPath; } @interface DVTPlaygroundCommunicationSender ▸ Uses TCP/IP on the local machine to communicate between Stub and Xcode ▸ But apparently uses Unix domain sockets for the other direction (?)

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¯\_()_/¯

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➡️ XCODE PLUGIN

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LIBPLAYGROUNDINJECTOR.DYLIB

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#import @interface IDELocalComputerPlaygroundExecutionDeviceService : IDEPlaygroundExecutionDeviceService + (id)capability; - (id)sessionForExecutingPlaygroundWithParameters:(id)arg1; - (id)defaultStubPathForSDK:(id)arg1; @end

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DYLD_INSERT_LIBRARIES

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@interface IDEPlaygroundExecutionSession : NSOperation [...] - (void)cleanupExecutable; - (void)destroyDebugger; - (void)_stopListeningForPlaygroundInput; - (void)_interruptExecutingPlaygroundSource; - (void)cancel; - (BOOL)canFinishExecution; [...] @end

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@interface IDEPlaygroundExecutionParameters : NSObject [...] - (id)initWithSourceCodeToExecute:(id)arg1 documentFileURL:(id)arg2 documentContentTimestamp:(id)arg3 autoTerminationDelay:(unsigned long long)arg4 executionPreparationParameters:(id)arg5 playgroundReportResultBlock:(id)arg6 playgroundExecutionWillFinishBlock:(void)arg7 playgroundExpressionCompleteBlock:(id)arg8 errorHandlerBlock:(void)arg9; @end

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SOURCEKIT

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@interface IDESourceLanguageServiceSwift : DVTSourceLanguageService [...] - (void)_applyChangesFromSourceLanguageServiceContext:(id)arg1; [...] @end

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05/07/14 09:43:08,109 Xcode[9202]: toy-unboxing -- Fixed context: { DVTSourceLanguageServiceContextFormatOptionsKey = { ... }; DVTSourceLanguageServiceContextTextStorage = ...; IDESourceLangaugeServiceContextBuildSettings = { swiftASTCommandArguments = ( "-module-name", Playground, "-target", "x86_64-apple-macosx10.10", "-sdk", "/Applications/Xcode6-Beta2.app/.../MacOSX10.10.sdk", "-F", "/Applications/Xcode6-Beta2.app/.../Frameworks", "-F", "/Applications/Xcode6-Beta2.app/.../PrivateFrameworks", "-Xfrontend", "-debugger-support", "-c", "/Users/boris/Desktop/MyPlayground.playground" ); }; IDESourceLanguageServiceContextDocument = ...; IDESourceLanguageServiceContextDocumentURL = ...; }

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IDESourceLangaugeServiceContextBuildSettings

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IDESourceLangaugeServiceContextBuildSettings

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(

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[...] "-F", "/Users/boris/Library/Developer/Playground Frameworks", [...]

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import XCPlayground XCPSetExecutionShouldContinueIndefinitely()

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DEMO

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RELEVANT WWDC 2014 SESSIONS ▸ Session 408: Swift Playgrounds ▸ Session 409: Introduction to LLDB and the Swift REPL

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LINKS ▸ http://samdmarshall.com/blog/ custom_frameworks_and_swift.html ▸ https://github.com/jas/swift-playground-builder ▸ http://stackoverflow.com/questions/24058336/how-do-i-run- asynchronous-callbacks-in-playground