hugo page_unwrap 代码
文件路径：/hugolib/page_unwrap.go
/ Copyright 2019 The Hugo Authors. All rights reserved.
/
/ Licensed under the Apache License, Version 2.0 (the "License");
/ you may not use this file except in compliance with the License.
/ You may obtain a copy of the License at
/ http://www.apache.org/licenses/LICENSE-2.0
/
/ Unless required by applicable law or agreed to in writing, software
/ distributed under the License is distributed on an "AS IS" BASIS,
/ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/ See the License for the specific language governing permissions and
/ limitations under the License.
package hugolib
import (
"fmt"
"github.com/gohugoio/hugo/resources/page"
)
/ Wraps a Page.
type pageWrapper interface {
page() page.Page
}
/ unwrapPage is used in equality checks and similar.
func unwrapPage(in any) (page.Page, error) {
switch v := in.(type) {
case *pageState:
return v, nil
case pageWrapper:
return v.page(), nil
case page.Page:
return v, nil
case nil:
return nil, nil
default:
return nil, fmt.Errorf("unwrapPage: %T not supported", in)
}
}
func mustUnwrapPage(in any) page.Page {
p, err := unwrapPage(in)
if err != nil {
panic(err)
}
return p
}