hugo

Fork of github.com/gohugoio/hugo with reverse pagination support

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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 }