Files
codeql/shared/yeast-macros
Taus 04f587190e yeast: AST desugaring framework with proc-macro DSL
YEAST (YEAST Elaborates Abstract Syntax Trees) is a framework for
transforming tree-sitter parse trees before CodeQL extraction.

Core components:
- shared/yeast/ — Ast, Node, Schema, query matching engine, captures,
  FreshScope, BuildCtx
- shared/yeast-macros/ — proc macros: query!, tree!, trees!, rule!

The query language is inspired by tree-sitter queries:
  (assignment left: (_) @lhs right: (_) @rhs)

Templates support embedded Rust ({expr}), splicing ({..expr}),
computed literals (#{expr}), and fresh identifiers ($name).

The rule! macro combines query and transform:
  rule!((for pattern: (_) @pat ...) => (call receiver: {val} ...))

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-05-06 11:34:09 +00:00
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