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main
internal/dag/seq.go
70 строк
2 KB
James Bardin
remove unused
03 авг 2026, 17:43
03 авг 2026, 17:43
e91b9e0
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// Copyright IBM Corp. 2014, 2026 // SPDX-License-Identifier: BUSL-1.1 package dag import ( "iter" "slices" ) type VertexSeq[T Vertex] iter.Seq[T] func (seq VertexSeq[T]) Collect() []T { return slices.Collect(iter.Seq[T](seq)) } func (seq VertexSeq[T]) AsGeneric() VertexSeq[Vertex] { return func(yield func(Vertex) bool) { for v := range seq { if !yield(v) { return } } } } // Vertices returns an iterator over all the vertices in the graph. func (g *Graph) VerticesSeq() VertexSeq[Vertex] { return func(yield func(v Vertex) bool) { for v := range g.vertices.All() { if !yield(v) { return } } } } // SelectSeq filters a sequence to include only elements that can be type-asserted to type U. // It returns a new sequence containing only the matching elements. // The yield function can return false to stop iteration early. func SelectSeq[U Vertex](seq VertexSeq[Vertex]) VertexSeq[U] { return func(yield func(U) bool) { for v := range seq { // if the item is not of the type we're looking for, skip it u, ok := any(v).(U) if !ok { continue } if !yield(u) { return } } } } // ExcludeSeq filters a sequence to exclude elements that can be type-asserted to type U. // It returns a new sequence containing only the non-matching elements. // The yield function can return false to stop iteration early. func ExcludeSeq[U Vertex](seq VertexSeq[Vertex]) VertexSeq[Vertex] { return func(yield func(Vertex) bool) { for v := range seq { if _, ok := any(v).(U); ok { continue } if !yield(v) { return } } } }