scalameta/scalameta

Health v2 · maintenance only

Adoption not part of the score

1156 stars · 246 forks observed · 2026-09-01

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Scalameta is a Scala library for reading, analyzing, transforming, and generating Scala programs via lossless syntax trees and quasiquotes. It also provides SemanticDB, a protobuf-based data model for sharing semantic information (symbols and types) between developer tools.

Use cases

• parse scala source code into syntax trees
• build a scala code formatter or linter
• programmatically refactor scala code
• pretty-print scala syntax trees back to source
• build scala developer tools using semantic information
• pattern match and traverse scala ASTs
• generate scala code programmatically

When to choose

• you need lossless syntax trees for Scala 2 or Scala 3
• you are building formatters, linters, refactoring or documentation tools for Scala
• you want a stable, documented alternative to Scala compiler internals for tooling
• you need quasiquotes for constructing or matching Scala code

When to avoid

• you work in a language other than Scala or Java
• you need runtime bytecode generation or macros rather than source-level metaprogramming
• you need full semantic type information for languages beyond Scala's partial Java support

Facets

library · maturity active

parser serialization developer-tools documentation parsers programming-languages developer-tools documentation jvm cross-platform scala syntax-trees metaprogramming semanticdb quasiquotes pretty-printer code-analysis

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