Making your own tools using SwiftSyntax - Yusuke Kita
===

{%hackmd FGRWt1UuTFKk0wSbGgg-SA %}

> 請從這裡開始

## YouTube
{%youtube NuUJbMx92TE %}

## Slide
{%slideshare kitasuke/making-your-own-tool-using-swiftsyntax %}

### What's SwiftSyntax for?
SwiftSyntax功能如format, search constant
(A parsing tool)
* Code Modifier
* Code Analyzer

SwiftSyntax把swift code轉成(emit)樹狀

swift -frontend emit-syntax

* Swift AST Explorer

## Recap
SwiftSyntax is a parsing tool
emits syntax tree
allows to inspect and transform source code

## Install

可以透過 SPM 安裝，建議指定特定 Tag，例如:
* `swift-5.0.3-RELEASE`

.package(url: "https://github.com/apple/swift-syntax.git",
      .exact("<#Specify Release tag#>")),

## interfaces
syntaxParser
SourceFileSyntax
Syntax
TonkenSyntax

### Resource

* [Slide](https://github.com/kitasuke/talks/blob/master/2019-iplayground/swiftsyntax-tool.md)
* [SE-0250: Swift Code Style Guidelines and Formatter](https://forums.swift.org/t/se-0250-swift-code-style-guidelines-and-formatter/21795)
* [swift-format](https://github.com/apple/swift-format)
* [SwiftConst](https://github.com/kitasuke/SwiftConst)
* [SourceKit](https://github.com/apple/swift/tree/master/tools/SourceKit)
* [sourcekit-lsp](https://github.com/apple/sourcekit-lsp)
* [swift-ast-explorer](https://github.com/kishikawakatsumi/swift-ast-explorer)
* [swift-ast-explorer demo](https://swift-ast-explorer.kishikawakatsumi.com)
* [PDF](https://github.com/kitasuke/talks/blob/master/2019-iplayground/swiftsyntax-tool.pdf)
* [Integrating libSyntax into the compiler pipeline](https://www.slideshare.net/kitasuke/integrating-libsyntax-into-the-compiler-pipeline)

###### tags:`iPlayground2019`