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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "github.com/things-go/protogen-saber/internal/annotation" | ||
| "github.com/things-go/protogen-saber/internal/protoutil" | ||
| "google.golang.org/protobuf/compiler/protogen" | ||
| ) | ||
|
|
||
| // annotation const value | ||
| const ( | ||
| Identifier = "asynq" | ||
| Attribute_Name_Pattern = "pattern" | ||
| Attribute_Name_CronSpec = "cron_spec" | ||
| ) | ||
|
|
||
| type Task struct { | ||
| Enabled bool | ||
| Pattern string | ||
| CronSpec string | ||
| } | ||
|
|
||
| func IsAnnotationTaskEnabled(s protogen.Comments) bool { | ||
| annotates, _ := protoutil.NewCommentLines(s).FindAnnotations(Identifier) | ||
| return annotates.ContainHeadless(Identifier) | ||
| } | ||
|
|
||
| func ParserAnnotationTask(s protogen.Comments) *Task { | ||
| ret := &Task{} | ||
| annotates, _ := protoutil.NewCommentLines(s).FindAnnotations(Identifier) | ||
| for _, annotate := range annotates { | ||
| if annotate.IsHeadless() { | ||
| ret.Enabled = true | ||
| continue | ||
| } | ||
| for _, attr := range annotate.Attrs { | ||
| switch attr.Name { | ||
| case Attribute_Name_Pattern: | ||
| if vv, ok := attr.Value.(annotation.String); ok { | ||
| ret.Pattern = vv.Value | ||
| } | ||
| case Attribute_Name_CronSpec: | ||
| if vv, ok := attr.Value.(annotation.String); ok { | ||
| ret.CronSpec = vv.Value | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return ret | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| package annotation | ||
|
|
||
| import ( | ||
| "github.com/alecthomas/participle/v2" | ||
| ) | ||
|
|
||
| var parser = participle.MustBuild[Annotation]( | ||
| participle.Unquote(), | ||
| participle.Union[Value]( | ||
| String{}, Integer{}, Float{}, Bool{}, | ||
| StringList{}, IntegerList{}, FloatList{}, BoolList{}, | ||
| ), | ||
| ) | ||
|
|
||
| // Annotation an specified identifier and it's attribute list. | ||
| // `#[ident]` | ||
| // `#[ident(k1=v1,k2=v2)]` | ||
| type Annotation struct { | ||
| Identifier string `parser:"'#' '[' @Ident"` | ||
| Attrs []*NameValue `parser:"('(' (@@ (',' @@)*)? ')')?"` | ||
| Empty struct{} `parser:"']'"` | ||
| } | ||
|
|
||
| // `#[ident]` only, not contain any attributes. | ||
| func (a *Annotation) IsHeadless() bool { | ||
| return len(a.Attrs) == 0 | ||
| } | ||
|
|
||
| // NameValue like `#[ident(name=value]` | ||
| type NameValue struct { | ||
| // name | ||
| Name string `parser:"@Ident '='"` | ||
| // one of follow | ||
| // String, Integer, Float, Bool, | ||
| // StringList, IntegerList, FloatList, BoolList, | ||
| Value Value `parser:"@@"` | ||
| } | ||
|
|
||
| // Match 匹配注解 | ||
| // `#[ident]` | ||
| // `#[ident(k1=v1,k2=v2)]` | ||
| func Match(s string) (*Annotation, error) { | ||
| return parser.ParseString("", s) | ||
| } | ||
|
|
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| type Annotations []*Annotation | ||
|
|
||
| // ContainHeadless contain headless | ||
| func (a Annotations) ContainHeadless(identifier string) bool { | ||
| for _, v := range a { | ||
| if v.Identifier == identifier && v.IsHeadless() { | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| } | ||
|
|
||
| func (a Annotations) Find(identifier string) Annotations { | ||
| ret := make(Annotations, 0, len(a)) | ||
| for _, v := range a { | ||
| if v.Identifier == identifier { | ||
| ret = append(ret, v) | ||
| } | ||
| } | ||
| return ret | ||
| } | ||
|
|
||
| func (a Annotations) FindValue(identifier, name string) []Value { | ||
| ret := make([]Value, 0, len(a)) | ||
| for _, v := range a { | ||
| if v.Identifier == identifier { | ||
| for _, vv := range v.Attrs { | ||
| if vv.Name == name { | ||
| ret = append(ret, vv.Value) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return ret | ||
| } |
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