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