Unlock the Potential of Swift Code Generation
summary
Claims that Swift can match Java-style annotation processing by combining Swift macros with a build tool plugin and Swift Syntax tools; shows a concrete DI container (sword) generated at build time and working in a sample app. Explains five implementation steps: declare macros, configure plugin, parse with SwiftSyntax and PathKit, validate with source locations, and render output with SwiftSyntaxBuilder and ArgumentParser. Notes limitation: macros alone cannot emit global cross-module code, but the combined pipeline does and emits compile-time errors with file/line locations.
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chapters (10)
- 0:00Swift code generation intro
- 2:59Limitations of Swift macros
- 4:04Project structure for DI
- 5:49Defining Swift macros
- 7:59Configuring build plugins
- 11:12Parsing Swift with syntax trees
- 15:26Validating macro usage
- 17:34Generating code with SwiftSyntax
- 20:04Building DA container
- 21:08Summary
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