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BUILDING.md

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Building

The xcode-kotlin plugin is written in Kotlin. It uses Kotlin/Native for compiling Kotlin code to native binaries.

Building environment: IntelliJ IDEA

Build Local Development Version

As this is a tool for Xcode, you'll need to run the build on a mac machine. We'll assume your machine is an ARM, Mx chip and not Intel. Replace the calls with X64 versions if needed.

To build, open a terminal in the root project folder and run:

./gradlew preparePlugin linkDebugExecutableMacosArm64

To test the local build, run the following:

./build/bin/macosArm64/debugExecutable/xcode-kotlin.kexe [command]

Libraries

  • kotlinx-cli - a generic command-line parser used to create user-friendly and flexible command-line interfaces
  • kotlinx-serialization-json - JSON serialization for Kotlin projects
  • kotlinx-coroutines - library support for Kotlin coroutines with multiplatform support
  • Kermit - logging utility with composable log outputs

Project structure

In the command directory the commands users can call are implemented: info, install, sync and uninstall. Each has an execute function with the implementation, that calls classes like Installer or Uninstaller.

  • BaseXcodeListSubcommand is an abstract class overriden by the following classes (Info, Install and Sync). It provides them with a protected method for getting a list of Xcode installations.
  • Info checks for an available update or if the plugin is not yet installed, writes information about the plugin to the console, such as installed and bundles versions, if Language spec and LLDB is installed and if LLDB for Xcode has been initialized, also Xcode version and the plugin compatibility.
  • Install checks for current version and offers updating, reinstalling or downgrading if it is already installed or installs it if not.
  • Sync adds IDs of Xcode installations to the currently installed Xcode Kotlin plugin.
  • Uninstall uninstalls the plugin.

In the util directory are, as the name suggests, util classes.

  • Console provides convenience functions for prompting user for confirmation or value and printing output to the console.
  • CrashHelper provides functions for logging, capturing and uploading errors (crash reports).
  • File is a class for holding a file path and providing methods for working with a file.
  • Path holds a string value and provides methods for appending and deleting path components and resolving sym links. It also provides convenience methods for creating Paths to home, work, binary and data directories in its companion object.
  • PropertyList is a class for converting to and from Swift classes.
  • Shell is a helper for executing shell tasks.

The other classes in the cli directory are mainly managers and helpers that provide methods for installing and uninstalling various parts of the plugin.

  • Installer has an installAll method for calling install on all the managers.
  • LangSpecManager provides install and uninstall methods and isInstalled check for the Kotlin.xclangspec.
  • LLDBInitManager provides install and uninstall methods and isInstalled and sourcesMainLlvmInit checks for the LLDB init.
  • PluginManager provides install, sync and uninstall methods,isInstalled check and bundledVersion, installedVersion and targetSupportedXcodeUUIds properties for the plugin.
  • Uninstaller has an uninstallAll method for calling uninstall on all the managers.
  • XcodeHelper provides methods for interacting with Xcode installations: ensureXcodeNotRunning to check and optionally shut down running Xcode instances, allXcodeInstallations that returns a list of found Xcode installations, addKotlinPluginToDefaults for adding a plugin to allowed list in Xcode defaults and removeKotlinPluginFromDefaults for removing it.

In build.gradle there are two gradle tasks added: assembleReleaseExecutableMacos for building a universal macOS binary and preparePlugin for preparing the plugin and language specification to build dir.

This project uses Object classes instead of dependency injection (DI) because of its small size.