Package: ruby-ast (2.4.0-1)

Ruby library for working with abstract syntax trees

ast embraces immutability; each AST node is inherently frozen at creation, and updating a child node requires recreating that node and its every parent, recursively.

This is a design choice. It does create some pressure on garbage collector, but completely eliminates all concurrency and aliasing problems.

See also AST::Node, AST::Processor::Mixin and AST::Sexp classes for additional recommendations and design patterns.