collections.go (1561B)
1 // Copyright 2019 The Hugo Authors. All rights reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 // http://www.apache.org/licenses/LICENSE-2.0
7 //
8 // Unless required by applicable law or agreed to in writing, software
9 // distributed under the License is distributed on an "AS IS" BASIS,
10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 // See the License for the specific language governing permissions and
12 // limitations under the License.
13
14 package hugolib
15
16 import (
17 "github.com/gohugoio/hugo/common/collections"
18 "github.com/gohugoio/hugo/resources/page"
19 )
20
21 var (
22 _ collections.Grouper = (*pageState)(nil)
23 _ collections.Slicer = (*pageState)(nil)
24 )
25
26 // collections.Slicer implementations below. We keep these bridge implementations
27 // here as it makes it easier to get an idea of "type coverage". These
28 // implementations have no value on their own.
29
30 // Slice is for internal use.
31 func (p *pageState) Slice(items any) (any, error) {
32 return page.ToPages(items)
33 }
34
35 // collections.Grouper implementations below
36
37 // Group creates a PageGroup from a key and a Pages object
38 // This method is not meant for external use. It got its non-typed arguments to satisfy
39 // a very generic interface in the tpl package.
40 func (p *pageState) Group(key any, in any) (any, error) {
41 pages, err := page.ToPages(in)
42 if err != nil {
43 return nil, err
44 }
45 return page.PageGroup{Key: key, Pages: pages}, nil
46 }