class Registry

Tag Registry.

index

members

• registry:begin_eval()  – begin an evaluation cycle.
• registry:rollback_eval()  – abort an evaluation cycle.
• registry:end_eval()  – end an evaluation cycle.
• registry:destroy()  – destroy this Registry and all associated Registrations.

static functions

• Registry()  – create a new Registry.

internals for `tag`

• registry:last(index)  – lookup the last registration.
• registry:register(tag, expr, ignore_dup)  – set the current registration.

details

members

• registry:begin_eval()  – begin an evaluation cycle.
  All calls go begin_eval must be matched with either a call to end_eval or rollback_eval.
• registry:rollback_eval()  – abort an evaluation cycle.
• registry:end_eval()  – end an evaluation cycle.
  Register all pending Tags and destroy all orphaned registrations.

  returns:

  1. (bool): whether any changes to the AST were made
• registry:destroy()  – destroy this Registry and all associated Registrations.
  needs to be called after :eval.

static functions

• Registry()  – create a new Registry.

internals for `tag`

• registry:last(index)  – lookup the last registration.

  parameters:

  • index (number or string): the registration index

  returns:

  1. (any)
• registry:register(tag, expr, ignore_dup)  – set the current registration.

  parameters:

  • tag (Tag): the Tag to register
  • expr (any): the registration value
  • ignore_dup (boolean): ignore duplicate registrations