Playground | ast-grep

SG playground: Write Code to Match Code. Manual 🔗

ast-grep is a AST-based tool to search code by pattern code. Think it as your old-friend grep but it matches AST node instead of text.
Write pattern as if write ordinary code. It will match all code that has the same syntactical structure.
You can use $ sign + upper case letters as wildcard, e.g. $MATCH, to match any single AST node. Think it as REGEX dot ., except it is not textual.
You can use $$$ to match multiple AST nodes.

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