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This article mainly introduces "how to use golang to write annotation-based static code enhancers / generators". In daily operations, I believe that many people have doubts about how to use golang to write annotation-based static code enhancers / generators. The editor consulted all kinds of materials and sorted out simple and useful operation methods. I hope it will be helpful for you to answer the question of "how to write an annotation-based static code enhancer / generator using golang"! Next, please follow the editor to study!

The main features of SpringSpring: 1. Control inversion (Inversion of Control, IoC) 2. Facing Container 3. Aspect-oriented (AspectOriented Programming, AOP) source gitee address: https://gitee.com/ioly/learning.gooop original text link: https://my.oschina.net/ioly target

Refer to the common notes in spring boot and write "Annotation-based static Code Enhancer / Generator" in golang.

Subgoal (Day 9)

Struct parsing is clear, and then parsing annotations is easier.

Scanner/IStructScanner.go: fix the details of scanMethod () and scanAnnotation ()

Scanner/IAnnotationScanner.go: annotation scanning interface and default implementation. The properties of annotations support double quotation marks and accented strings.

Scanner/IAnnotationScanner_test.go: unit testing for annotated information

Scanner/IAnnotationScanner.go

Annotation scan interface and default implementation. The properties of annotations support double quotation marks and accented strings.

Package scannerimport ("errors"learning/gooop/spring/autogen/common"learning/gooop/spring/autogen/domain"regexp"strings") type IAnnotationScanner interface {ScanAnnotations (s * domain.StructInfo)} type tAnnotationScanner intfunc (me * tAnnotationScanner) ScanAnnotations (s * domain.StructInfo) {me.scanStructAnnotation (s) me.scanFieldAnnotation (s) me.scanMethodAnnotation (s) } func (me * tAnnotationScanner) scanStructAnnotation (s * domain.StructInfo) {for I: = s.LineNO-1 I > = 0 I if-{if! me.matchAnnotation (s, I) {break} code: = s.CodeFile.RawLines [I] e A: = me.parseAnnotation (code) if e! = nil {panic (e)} s.AppendAnnotation (a)}} func (me * tAnnotationScanner) scanFieldAnnotation (s * domain.StructInfo) {for _, fld: = range s.Fields {for I: = fld.LineNO-1 I > = 0 I if-{if! me.matchAnnotation (s, I) {break} code: = s.CodeFile.RawLines [I] e A: = me.parseAnnotation (code) if e! = nil {panic (e)} fld.AppendAnnotation (a)}} func (me * tAnnotationScanner) scanMethodAnnotation (s * domain.StructInfo) {for _ Method: = range s.Methods {for I: = method.LineNO-1 I > = 0 I if-{if! me.matchAnnotation (s, I) {break} code: = s.CodeFile.RawLines [I] e A: = me.parseAnnotation (code) if e! = nil {panic (e)} method.AppendAnnotation (a)}} func (me * tAnnotationScanner) matchAnnotation (s * domain.StructInfo LineNO int) bool {line: = s.CodeFile.RawLines [lineNO] return gAnnotationStartRegexp.MatchString (line)} func (me * tAnnotationScanner) parseAnnotation (line string) (error, * domain.AnnotationInfo) {ss: = gAnnotationStartRegexp.FindStringSubmatch (line) if len (ss)

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