graph

Documentation

Index

• func Exclusion(start *core.ObjectAndRelation, children ...*core.RelationTupleTreeNode) *core.RelationTupleTreeNode
• func HasThis(rewrite *core.UsersetRewrite) (bool, error)
• func Intersection(start *core.ObjectAndRelation, children ...*core.RelationTupleTreeNode) *core.RelationTupleTreeNode
• func Leaf(start *core.ObjectAndRelation, subjects ...*core.DirectSubject) *core.RelationTupleTreeNode
• func Union(start *core.ObjectAndRelation, children ...*core.RelationTupleTreeNode) *core.RelationTupleTreeNode
• func WalkRewrite(rewrite *core.UsersetRewrite, handler WalkHandler) (interface{}, error)
• type WalkHandler

Functions

func Exclusion

func Exclusion(start *core.ObjectAndRelation, children ...*core.RelationTupleTreeNode) *core.RelationTupleTreeNode

Exclusion constructs a RelationTupleTreeNode exclusion operation.

func HasThis

func HasThis(rewrite *core.UsersetRewrite) (bool, error)

HasThis returns true if there exists a `_this` node anywhere within the given rewrite. If the rewrite is nil, returns false.

func Intersection

func Intersection(start *core.ObjectAndRelation, children ...*core.RelationTupleTreeNode) *core.RelationTupleTreeNode

Intersection constructs a RelationTupleTreeNode intersection operation.

func Leaf

func Leaf(start *core.ObjectAndRelation, subjects ...*core.DirectSubject) *core.RelationTupleTreeNode

Leaf constructs a RelationTupleTreeNode leaf.

func Union

func Union(start *core.ObjectAndRelation, children ...*core.RelationTupleTreeNode) *core.RelationTupleTreeNode

Union constructs a RelationTupleTreeNode union operation.

func WalkRewrite

func WalkRewrite(rewrite *core.UsersetRewrite, handler WalkHandler) (interface{}, error)

WalkRewrite walks a userset rewrite tree, invoking the handler found on each node of the tree until the handler returns a non-nil value, which is in turn returned from this function. Returns nil if no valid value was found. If the rewrite is nil, returns nil.

Types

type WalkHandler

type WalkHandler func(childOneof *core.SetOperation_Child) interface{}

WalkHandler is a function invoked for each node in the rewrite tree. If it returns non-nil, that value is returned from the walk. Otherwise, the walk continues.