Debug CocoaPods & Plugins in VSCode

中文版本点这里

使用 VSCode debug CocoaPods 和插件源码

• Debug CocoaPods & Plugins in VSCode
  • Pre-requirements
    • Install Debug Gems
    • Install VSCode Ruby Plugin
  • Debug With bundler
  • Debug without bundler
    • Debug CocoaPods
    • Debug CocoaPods & plugin
    • Example of debugging CocoaPods & plugin

Pre-requirements

Install Debug Gems

gem install ruby-debug-ide
gem install debase

Install VSCode Ruby Plugin

Ruby

Debug With bundler

• Create a Gemfile in project root and add the following content to it

gem 'cocoapods', path: 'path/to/cocoapods/'
gem 'cocoapods-binary', path: 'path/to/cocoapods-binary/'
gem 'ruby-debug-ide'
gem 'debase'

• run bundle install
• Create .vscode/launch.json in project root

{
  "configurations": [{
      "name": "Debug CocoaPods Plugin with Bundler",
      "showDebuggerOutput": true,
      "type": "Ruby",
      "request": "launch",
      "useBundler": true,
      "cwd": "${workspaceRoot}/Testing",
      "program": "${workspaceRoot}/cocoapods/bin/pod",
      "args": ["install"]
    }
}

• Add some breakpoint within VSCode
• Press F5 or hit menu Debug - Start Debugging

Debug without bundler

Don't waste your time! Use bundler now!

Debug CocoaPods

• Clone CocoaPods

git clone https://github.com/CocoaPods/CocoaPods.git

• Checkout cloned repo to match the version you have installed on your laptop

git checkout `pod --version`

• Create .vscode/launch.json in CocoaPods' root folder

{
  "configurations": [{
    "name": "Debug CocoaPods Plugin",
    "showDebuggerOutput": true,
    "type": "Ruby",
    "request": "launch",
    "cwd": "path/to/podfile/dir", // where the `pod` command execute (the folder should contain a `Podfile`)
    "program": "${workspaceRoot}/bin/pod",
    "args": ["install"] // `pod` command arguments
  }]
}

• Comment bin/pod:L27 (# require 'bundler/setup')
• Add some breakpoint within VSCode
• Press F5 or hit menu Debug - Start Debugging

Debug CocoaPods & plugin

• Create a new folder, all actions below are under this folder
• Clone & checkout CocoaPods source code
• Clone or create a CocoaPods plugin
• Copy .vscode to this folder
• Make some changes in .vscode/launch.json
  • cwd: where the pod command execute (the folder should contain a Podfile)
  • pluginPath: path to the plugin
  • args: pod command arguments
• Change cocoapods/bin/pod:L27
  • From require 'bundler/setup to require_relative '../../.vscode/plugin_patch', just like this
• Add some breakpoint within VSCode
• Press F5 or hit menu Debug - Start Debugging

Example of debugging CocoaPods & plugin

The CocoaPods version in this repository is 1.8.0.beta.1, incase some version incompatible issue with CocoaPods-Core or other gems, you should install this version's CocoaPods in your Mac too

• Clone this repository
• Open it with VSCode
• Add a breakpoint somewhere you like to explore
  • eg. cocoapods/lib/cocoapods/command/install.rb:L46
  • eg. cocoapods-binary/lib/cocoapods-binary/Main.rb:L101
• Press F5 or hit menu Debug - Start Debugging
• All set 🌸

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