/
annotation.go
70 lines (63 loc) · 1.54 KB
/
annotation.go
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// Copyright 2021 gotomicro
//
// 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 ast
import (
"go/ast"
"strings"
)
type Annotations struct {
Ans []Annotation
}
type Annotation struct {
Key string
Value string
}
func newAnnotations(cg *ast.CommentGroup) Annotations {
if cg == nil || len(cg.List) == 0 {
return Annotations{Ans: []Annotation{}}
}
ans := make([]Annotation, 0, len(cg.List))
for _, c := range cg.List {
text, ok := extractContent(c)
if !ok {
continue
}
if strings.HasPrefix(text, "@") {
slice := strings.SplitN(text, " ", 2)
if len(slice) == 2 {
ans = append(ans, Annotation{
Key: slice[0][1:],
Value: slice[1],
})
} else {
ans = append(ans, Annotation{
Key: slice[0][1:],
})
}
}
}
return Annotations{
Ans: ans,
}
}
func extractContent(c *ast.Comment) (string, bool) {
text := c.Text
if strings.HasPrefix(text, "// ") {
return text[3:], true
} else if strings.HasPrefix(text, "/* ") {
length := len(text)
return text[3 : length-2], true
}
return "", false
}