swiftlang/swift-syntax

Health v2 · maintenance only

Adoption not part of the score

3693 stars · 542 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A set of Swift libraries for parsing, inspecting, generating, and transforming Swift source code via a source-accurate syntax tree (SwiftSyntax). It is the backbone of Swift's macro system, letting macros generate SwiftSyntax trees inserted into source files.

Use cases

• parse Swift source code into a syntax tree
• build Swift macros
• generate Swift source code programmatically
• write linters or refactoring tools for Swift
• transform or rewrite Swift source files
• analyze Swift AST for tooling

When to choose

• building Swift macros or compiler-adjacent tooling
• writing code generators, linters, or formatters for Swift
• you need a source-accurate, lossless representation of Swift code

When to avoid

• parsing languages other than Swift
• you only need lightweight regex-based text manipulation of Swift files
• you need a stable API surface across major versions without migration effort

Facets

library · maturity stable

parser compiler developer-tools code-review programming-languages parsers developer-tools compilers cross-platform swift-syntax ast source-code-analysis macros swiftmacro code-generation syntax-tree swift macos linux

Member repositories

For agents

markdown · JSON · MCP: product_card(name="swiftlang/swift-syntax")