Module combinators 

The plan combinator table and its metadata.

Structs

PlanCombinator

Static description of a plan combinator: its name and structural constraints.

Functions

combinator_by_name

Looks up a combinator by its name, returning None if it is not known.

plan_combinators

Returns the full table of known plan combinators.

plan_combinators_expr

Returns the combinator table encoded as a list of map Expr records.

plan_symbol

Returns the plan/<name> head symbol for a combinator name.