mix ex_ast.search (ExAST v0.3.0)

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Searches for AST patterns in Elixir source files.

Usage

mix ex_ast.search 'IO.inspect(_)' [path ...]

Options

  • --count — only print the number of matches
  • --inside 'pattern' — only match inside ancestors matching this pattern
  • --not-inside 'pattern' — reject matches inside ancestors matching this pattern

Pattern syntax

Patterns are valid Elixir expressions:

  • Variables (name, expr) — capture any node
  • _ or _name — wildcard (match, don't capture)
  • Structs/maps — partial match (only listed keys must be present)
  • Pipes are normalized — data |> Enum.map(f) matches Enum.map(data, f)
  • Everything else — literal match

Examples

mix ex_ast.search 'IO.inspect(_)'
mix ex_ast.search '%Step{id: "subject"}' lib/documents/
mix ex_ast.search '{:error, reason}' lib/ test/
mix ex_ast.search --count 'dbg(_)'
mix ex_ast.search --inside 'def handle_call(_, _, _) do _ end' 'Repo.get!(_)'
mix ex_ast.search --not-inside 'test _ do _ end' 'IO.inspect(_)'