pointfreeco/swift-parsing

Health v2 · maintenance only

Adoption not part of the score

1000 stars · 86 forks observed · 2026-10-22

What it is AI-extracted, prompt v1, taxonomy v1, 2026-09-07, confidence 0.97

A Swift library for turning nebulous, unstructured data into well-structured data using composable parser combinators. It emphasizes composition, performance, generality, and invertibility, so parsers can also act as printers for serialization.

Use cases

• parse unstructured text or binary data into structured Swift types
• build composable parsers from small reusable pieces
• invert parsers into printers for serializing data back to strings
• implement URL routing by parsing request paths
• parse custom DSLs or configuration formats in Swift apps
• write high-performance UTF-8 level parsers that compose with string parsers

When to choose

• you are building in Swift and need flexible, composable parsing beyond regex
• you want a single library that both parses and prints (round-trip serialization)
• you need parsers that work across multiple input types (strings, UTF-8, arrays)
• you value ergonomics and type-safe parsing over hand-written scanners

When to avoid

• you need parsing in a non-Swift language
• you only need simple regex matching and a parser combinator library is overkill
• you need a full grammar compiler or parser generator with grammar files
• you need maximum raw performance from a hand-optimized, purpose-specific parser

Facets

library · maturity active

parser serialization parsers developer-tools cross-platform combinator-parsing parser-printer invertible-parsers swift-package functional-programming algorithms swift

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