selector

Documentation

Index

• type Selector
  • func MustParse(sel string) Selector
  • func Parse(str string) (Selector, error)
  • func (s Selector) Select(subject ipld.Node) (ipld.Node, error)
  • func (s Selector) String() string

Types

type Selector

type Selector []segment

Selector describes a UCAN policy selector, as specified here: https://github.com/ucan-wg/delegation/blob/4094d5878b58f5d35055a3b93fccda0b8329ebae/README.md#selectors

func MustParse

func MustParse(sel string) Selector

func Parse

func Parse(str string) (Selector, error)

func (Selector) Select

func (s Selector) Select(subject ipld.Node) (ipld.Node, error)

Select perform the selection described by the selector on the input IPLD DAG. Select can return:

• exactly one matched IPLD node
• a resolutionErr error if not being able to resolve to a node
• nil and no errors, if the selector couldn't match on an optional segment (with ?).

func (Selector) String

func (s Selector) String() string