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 14package hugolib 15 16import ( 17 "github.com/gohugoio/hugo/common/collections" 18 "github.com/gohugoio/hugo/resources/page" 19) 20 21var ( 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 not meant to be used externally. It's a bridge function 31func (p *pageState) Slice(items interface{}) (interface{}, 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. 40func (p *pageState) Group(key interface{}, in interface{}) (interface{}, 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} 47