在可可程序中访问Swift REPL [英] Access a Swift REPL in Cocoa programs

问题描述

我可以将LLDB附加到用Swift编写的程序中，并可以通过Xcode或运行以下命令来访问REPL:

I can attach LLDB to a program written in Swift and access the REPL, either from within Xcode or by running:

lldb -n ProcessName
(lldb) repl
  1>

但是，如果我将LLDB连接到没有Swift运行时的进程，则REPL并不是很有用.例如:

However, if I attach LLDB to a process which doesn't have the Swift runtime, the REPL isn't very useful. For example:

lldb -n Finder
Process 218 stopped
Executable module set to "/System/Library/CoreServices/Finder.app/Contents/MacOS/Finder".
Architecture set to: x86_64-apple-macosx.
(lldb) repl
  1> import Cocoa
error: Couldn't lookup symbols:
  __swift_FORCE_LOAD_$_swiftAppKit
  __swift_FORCE_LOAD_$_swiftCoreGraphics
  __swift_FORCE_LOAD_$_swiftObjectiveC
  __swift_FORCE_LOAD_$_swiftDispatch
  __swift_FORCE_LOAD_$_swiftDarwin
  __swift_FORCE_LOAD_$_swiftFoundation

关于如何将Swift运行时加载到尚未与之链接的进程的任何想法吗?这可能是一个非常有用的替代方法，例如注入F脚本.

Any idea on how to load the Swift runtime into a process which isn't linked against it already? This could be a very useful alternative to e.g. injecting F-Script.

推荐答案

dlopen()进行救援！

dlopen() to the rescue!

下载此脚本并保存，例如到〜/.lldb/inject-swift-repl

Download this script and save it e.g. to ~/.lldb/inject-swift-repl

然后运行lldb -n Finder --source .lldb/inject-swift-repl注入所有必需的库.请注意，您需要禁用SIP以使Finder混乱.还要注意，有时我必须退出LLDB并重新运行脚本，因为某些dlopen调用失败并返回0.

Then run lldb -n Finder --source .lldb/inject-swift-repl to inject all necessary libraries. Note that you need to disable SIP to mess with the Finder. Also note that sometimes I had to exit LLDB and re-run the script, because some dlopen calls failed and returned 0.

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