ing

annotation/annotation.go

@@ -0,0 +1,80 @@
+package annotation
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+
+	"git.loafle.net/commons_go/di"
+)
+
+const (
+	AnnotationStartChar        = "("
+	AnnotationEndChar          = ")"
+	AnnotationAttributeSpliter = ","
+	AnnotationKeyValueSpliter  = "="
+)
+
+type Annotation interface {
+}
+
+// @Inject(name? string)
+// @Resource(name? string)
+func ParseAnnotation(tag reflect.StructTag) (map[string]Annotation, error) {
+	a := strings.Trim(tag.Get(di.AnnotationTag), " ")
+	if "" == a {
+		return nil, nil
+	}
+
+	rKVs := make(map[string]Annotation)
+
+	inject, err := ParseInject(a)
+	if nil != err {
+		return nil, err
+	}
+	rKVs[InjectTag] = inject
+
+	resource, err := ParseResource(a)
+	if nil != err {
+		return nil, err
+	}
+	rKVs[ResourceTag] = resource
+
+	return rKVs, nil
+}
+
+func ParseAttribute(a string, startIndex int) (map[string]string, error) {
+	if startIndex >= len(a) {
+		return nil, nil
+	}
+
+	if AnnotationStartChar != string([]rune(a)[startIndex]) {
+		return nil, nil
+	}
+
+	endIndex := strings.Index(a[startIndex+1:], AnnotationEndChar)
+	if -1 == endIndex {
+		return nil, fmt.Errorf("DI: Syntax error - annotation(%s) has '%s', but '%s' is not exist", a, AnnotationStartChar, AnnotationEndChar)
+	}
+	endIndex = endIndex + startIndex + 1
+
+	body := a[startIndex+1 : endIndex]
+	kvs := strings.Split(body, AnnotationAttributeSpliter)
+	if 0 == len(kvs) {
+		return nil, nil
+	}
+
+	rKVs := make(map[string]string)
+	for i := 0; i < len(kvs); i++ {
+		s := strings.Trim(kvs[i], " ")
+		if "" == s {
+			continue
+		}
+		kv := strings.Split(s, AnnotationKeyValueSpliter)
+		k := strings.Trim(kv[0], " ")
+		v := strings.Trim(kv[1], " ")
+		rKVs[k] = v
+	}
+
+	return rKVs, nil
+}

annotation/inject.go

@@ -1,5 +1,39 @@
 package annotation
 
+// @Inject(name? string)
+
+import (
+	"strings"
+)
+
+const (
+	InjectTag = "@Inject"
+)
+
 type Inject struct {
+	Annotation
 	Name string
 }
+
+func ParseInject(a string) (*Inject, error) {
+	i := strings.Index(a, InjectTag)
+	if -1 == i {
+		return nil, nil
+	}
+
+	inject := &Inject{}
+
+	atts, err := ParseAttribute(a, i+len(InjectTag))
+	if nil != err {
+		return nil, err
+	}
+
+	for k, v := range atts {
+		switch k {
+		case "name":
+			inject.Name = v
+		}
+	}
+
+	return inject, nil
+}

annotation/inject_test.go

@@ -0,0 +1,30 @@
+package annotation
+
+import (
+	"log"
+	"testing"
+)
+
+func TestParseInject(t *testing.T) {
+	a1 := "@Inject"
+	a, err := ParseInject(a1)
+	if nil != err {
+		log.Printf("%v", err)
+	}
+	log.Printf("%v", a)
+
+	a2 := "@Inject()"
+	a, err = ParseInject(a2)
+	if nil != err {
+		log.Printf("%v", err)
+	}
+	log.Printf("%v", a)
+
+	a3 := "@Inject(name=string)"
+	a, err = ParseInject(a3)
+	if nil != err {
+		log.Printf("%v", err)
+	}
+	log.Printf("%v", a)
+
+}

annotation/resource.go

@@ -1,5 +1,35 @@
 package annotation
 
+import "strings"
+
+const (
+	ResourceTag = "@Resource"
+)
+
 type Resource struct {
+	Annotation
 	Name string
 }
+
+func ParseResource(a string) (*Resource, error) {
+	i := strings.Index(a, ResourceTag)
+	if -1 == i {
+		return nil, nil
+	}
+
+	inject := &Resource{}
+
+	atts, err := ParseAttribute(a, i+len(ResourceTag))
+	if nil != err {
+		return nil, err
+	}
+
+	for k, v := range atts {
+		switch k {
+		case "name":
+			inject.Name = v
+		}
+	}
+
+	return inject, nil
+}

annotation/resource_test.go

@@ -0,0 +1,30 @@
+package annotation
+
+import (
+	"log"
+	"testing"
+)
+
+func TestParseResource(t *testing.T) {
+	a1 := "@Resource"
+	a, err := ParseResource(a1)
+	if nil != err {
+		log.Printf("%v", err)
+	}
+	log.Printf("%v", a)
+
+	a2 := "@Resource( )"
+	a, err = ParseResource(a2)
+	if nil != err {
+		log.Printf("%v", err)
+	}
+	log.Printf("%v", a)
+
+	a3 := "@Resource(name=string1232)"
+	a, err = ParseResource(a3)
+	if nil != err {
+		log.Printf("%v", err)
+	}
+	log.Printf("%v", a)
+
+}

constants.go

@@ -23,3 +23,7 @@ const (
 	ScopeTypeSingleton
 	ScopeTypeTransiant
 )
+
+const (
+	AnnotationTag = "annotation"
+)

registry/definition.go

@@ -1,10 +1,25 @@
 package registry
 
-import "reflect"
+import (
+	"reflect"
 
-type ComponentDefinition struct {
+	cda "git.loafle.net/commons_go/di/annotation"
+)
+
+type TypeDefinition struct {
 	PkgName  string
 	TypeName string
 	Type     reflect.Type
 	RealType reflect.Type
+
+	Fields map[string]*FieldDefinition
+}
+
+type FieldDefinition struct {
+	PkgName  string
+	TypeName string
+	Type     reflect.Type
+	RealType reflect.Type
+
+	Annotations map[string]cda.Annotation
 }

registry/registry.go

@@ -2,26 +2,43 @@ package registry
 
 import (
 	"fmt"
+	"log"
 	"reflect"
 
 	cda "git.loafle.net/commons_go/di/annotation"
 	cdur "git.loafle.net/commons_go/di/util/reflect"
 )
 
+func init() {
+	registry = newRegistry()
+}
+
+var registry ComponentRegistry
+
 type ComponentRegistry interface {
 	RegisterType(t reflect.Type, ca *cda.ComponentAnnotation) error
-	RegisterFactory(i interface{}, ca *cda.ComponentAnnotation) error
 
 	GetInstance(t reflect.Type) (interface{}, error)
 	GetInstanceByName(name string) (interface{}, error)
 }
 
-type defaultComponentRegistry struct {
-	definitionsByType map[reflect.Type]*ComponentDefinition
+func newRegistry() ComponentRegistry {
+	r := &defaultComponentRegistry{}
+	r.definitionsByType = make(map[reflect.Type]*TypeDefinition, 0)
+	r.definitionByName = make(map[string]*TypeDefinition, 0)
 
-	definitionByName map[string]*ComponentDefinition
+	return r
 }
 
+type defaultComponentRegistry struct {
+	definitionsByType map[reflect.Type]*TypeDefinition
+
+	definitionByName map[string]*TypeDefinition
+}
+
+func RegisterType(t reflect.Type, ca *cda.ComponentAnnotation) error {
+	return registry.RegisterType(t, ca)
+}
 func (cr *defaultComponentRegistry) RegisterType(t reflect.Type, ca *cda.ComponentAnnotation) error {
 	if nil == t {
 		return fmt.Errorf("DI: t[reflect.Type] is nil")
@@ -30,41 +47,91 @@ func (cr *defaultComponentRegistry) RegisterType(t reflect.Type, ca *cda.Compone
 		return fmt.Errorf("DI: t[reflect.Type] must be specified but is %v", t)
 	}
 
-	rt, pkgName, tName := cdur.GetTypeName(t)
-	cr.definitions[name] = rt
+	td, err := cr.buildDefinition(t)
+	if nil != err {
+		return err
+	}
+
+	cr.definitionsByType[td.RealType] = td
+
+	if nil != ca {
+		if nil != ca.Names && 0 < len(ca.Names) {
+			for _, n := range ca.Names {
+				cr.definitionByName[n] = td
+			}
+		}
+	}
 
 	return nil
 }
 
+func GetInstance(t reflect.Type) (interface{}, error) {
+	return registry.GetInstance(t)
+}
 func (cr *defaultComponentRegistry) GetInstance(t reflect.Type) (interface{}, error) {
 	if nil == t {
 		return nil, fmt.Errorf("DI: t[reflect.Type] is nil")
 	}
-
+	var err error
 	cd, ok := cr.definitionsByType[t]
 	if !ok {
-		cd = cr.buildDefinition(t)
+		cd, err = cr.buildDefinition(t)
+		if nil != err {
+			return nil, err
+		}
 	}
+	log.Printf("%v", cd)
 
 	return nil, nil
 }
 
+func GetInstanceByName(name string) (interface{}, error) {
+	return registry.GetInstanceByName(name)
+}
 func (cr *defaultComponentRegistry) GetInstanceByName(name string) (interface{}, error) {
 
 	return nil, nil
 }
 
-func (cr *defaultComponentRegistry) buildDefinition(t reflect.Type) (*ComponentDefinition, error) {
+func (cr *defaultComponentRegistry) buildDefinition(t reflect.Type) (*TypeDefinition, error) {
 	if nil == t {
 		return nil, fmt.Errorf("DI: t[reflect.Type] is nil")
 	}
 
-	rt, pkgName, tName := cdur.GetTypeName(t)
-	cd := &ComponentDefinition{}
+	rt, pkgName, tName := cdur.GetTypeInfo(t)
+	cd := &TypeDefinition{}
 	cd.PkgName = pkgName
 	cd.TypeName = tName
 	cd.Type = t
 	cd.RealType = rt
 
-	return nil, nil
+	nf := rt.NumField()
+	if 0 < nf {
+		fields := make(map[string]*FieldDefinition)
+		for i := 0; i < nf; i++ {
+			f := rt.Field(i)
+			as, err := cda.ParseAnnotation(f.Tag)
+			if nil != err {
+				return nil, err
+			}
+			if nil != as && 0 < len(as) {
+				fRT, fPkgName, fTName := cdur.GetTypeInfo(f.Type)
+
+				fd := &FieldDefinition{
+					PkgName:     fPkgName,
+					TypeName:    fTName,
+					Type:        f.Type,
+					RealType:    fRT,
+					Annotations: as,
+				}
+				fields[f.Name] = fd
+			}
+		}
+
+		if 0 < len(fields) {
+			cd.Fields = fields
+		}
+	}
+
+	return cd, nil
 }

registry/registry_test.go

@@ -0,0 +1,18 @@
+package registry
+
+import (
+	"reflect"
+	"testing"
+
+	cda "git.loafle.net/commons_go/di/annotation"
+)
+
+func TestRegisterType(t *testing.T) {
+	RegisterType(reflect.TypeOf((*TestStruct)(nil)), &cda.ComponentAnnotation{})
+}
+
+type TestStruct struct {
+	Name1 string `annotation:"@Inject"`
+	Name2 string `annotation:"@Inject()"`
+	Name3 string `annotation:"@Inject(name=test)"`
+}

util/reflect/type.go

@@ -14,9 +14,9 @@ func IsTypeKind(t reflect.Type, kind reflect.Kind, removePtr bool) bool {
 	return kind == t.Kind()
 }
 
-func GetTypeName(t reflect.Type) (realType reflect.Type, pkgName string, name string) {
+func GetTypeInfo(t reflect.Type) (realType reflect.Type, pkgName string, name string) {
 	if reflect.Ptr == t.Kind() {
-		return GetTypeName(t.Elem())
+		return GetTypeInfo(t.Elem())
 	}
 
 	return t, t.PkgPath(), t.Name()