`geneticengine.grammar.metahandlers.base`

Module Contents

MetaHandlers are type refinements.

Returns if type is a metahandler. AnnotatedType[int, IntRange(3,10)] is

class geneticengine.grammar.metahandlers.base.MetaHandlerGenerator

Bases: Protocol

MetaHandlers are type refinements.

They override the generation procedure of the base type.

generate(r, g, rec, new_symbol, depth, base_type, context)

Generates an instance of type base_type, according to some criterion.

Parameters:

r (Source) – Random source for generation
g (Grammar) – Grammar to follow in the generation
rec (Callable[[int, Type], Any]) – The method to generate a new instance of type and maximum depth d
depth (int) – the current depth budget
base_type (Type) – The inner type being annotated
argname (str) – The name of the field of the parent object which is being generated
context (dict[str, str]) – The names and types of all fields in the parent object
context

geneticengine.grammar.metahandlers.base.is_metahandler(ty)

Returns if type is a metahandler. AnnotatedType[int, IntRange(3,10)] is an example of a Metahandler.

Verification is done using the __metadata__, which is the first argument of Annotated