AST Meta-programming
summary
Shows how to read and modify Swift ASTs and uses three concrete formats: SourceKitten JSON, SwiftSyntax, and dump AST. Builds a token-based syntax highlighter that wraps tokens in span tags and fixes tree structure with visitor pre/post hooks. Ships an online SwiftSC Explorer playground. Implements an AOP tool that intercepts the build, injects print statements into methods whose names start with "view", recompiles, launches the simulator, and confirms logs appear. Implements an assertion converter that uses dump AST type info to capture argument values.
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chapters (13)
- 0:00Intro
- 0:42What is AST
- 1:21AST
- 2:00Metaprogramming
- 3:53SauceKit
- 11:44Demo
- 13:33Practical Example
- 14:49Automation
- 15:38Demonstration
- 19:40Diagrammed assertions
- 20:13Dump AST
- 23:59Online Playground
- 25:06Wrap up
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