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hugo/resources/page/page_generate/generate_page_wrappers.go

115 lines
2.7 KiB
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 page_generate
import (
"errors"
"fmt"
"os"
"path/filepath"
"reflect"
"github.com/gohugoio/hugo/codegen"
"github.com/gohugoio/hugo/resources/page"
)
const header = `// 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.
// This file is autogenerated.
`
var (
pageInterface = reflect.TypeOf((*page.PageMetaProvider)(nil)).Elem()
packageDir = filepath.FromSlash("resources/page")
)
func Generate(c *codegen.Inspector) error {
if err := generateMarshalJSON(c); err != nil {
return fmt.Errorf("failed to generate JSON marshaler: %w", err)
}
return nil
}
func generateMarshalJSON(c *codegen.Inspector) error {
filename := filepath.Join(c.ProjectRootDir, packageDir, "page_marshaljson.autogen.go")
f, err := os.Create(filename)
if err != nil {
return err
}
defer f.Close()
includes := []reflect.Type{pageInterface}
excludes := []reflect.Type{}
methods := c.MethodsFromTypes(
includes,
excludes)
if len(methods) == 0 {
return errors.New("no methods found")
}
marshalJSON, pkgImports := methods.ToMarshalJSON(
"Page",
"github.com/gohugoio/hugo/resources/page",
// Exclusion regexps. Matches method names.
`\bPage\b`,
)
fmt.Fprintf(f, `%s
package page
%s
%s
`, header, importsString(pkgImports), marshalJSON)
return nil
}
func importsString(imps []string) string {
if len(imps) == 0 {
return ""
}
if len(imps) == 1 {
return fmt.Sprintf("import %q", imps[0])
}
impsStr := "import (\n"
for _, imp := range imps {
impsStr += fmt.Sprintf("%q\n", imp)
}
return impsStr + ")"
}