Ruby rubocop-ast
From wikinotes
A DSL for ruby parser that simplifies matching AST nodes.
Documentation
All AST nodes https://github.com/rubocop/rubocop-ast/blob/master/docs/modules/ROOT/pages/node_types.adoc Node Patterns (like AST selectors) https://docs.rubocop.org/rubocop-ast/node_pattern.html official docs https://docs.rubocop.org/rubocop-ast/ test patterns https://nodepattern.herokuapp.com/
Usage
you can show the ast for a file
ruby-parse --legacy -e 'foo(1)' # print the AST (send nil :foo (int 1))there's a lisp-like DSL for matching nodes
_ // any one thing ... // any number of items(const _ _) # any const (casgn <(const _ _) ...>) # any const being assigned via 'casgn'