Merge pull request #24 from afmahmuda/generics

parse *ast.IndexExpr for generics

astParser/mappers.go

@@ -1,6 +1,7 @@
 package astParser
 
 import (
+	"fmt"
 	"go/ast"
 
 	"github.com/bykof/go-plantuml/domain"
@@ -99,6 +100,22 @@ func structTypeToField(fieldName string, structType *ast.StructType) domain.Fiel
 		Type: "interface{}",
 	}
 }
+func indexExprToField(fieldName string, indexExpr *ast.IndexExpr) (domain.Field, error) {
+	innerType, err := exprToField("", indexExpr.Index)
+	if err != nil {
+		return domain.Field{}, err
+	}
+
+	outerType, err := exprToField("", indexExpr.X)
+	if err != nil {
+		return domain.Field{}, err
+	}
+
+	return domain.Field{
+		Name: fieldName,
+		Type: domain.Type(fmt.Sprintf("%s[%s]", outerType.Type, innerType.Type)),
+	}, nil
+}
 
 func chanTypeToField(fieldName string, chanType *ast.ChanType) domain.Field {
 	var valueFieldType string

astParser/parser.go

@@ -122,6 +122,17 @@ func ParseFile(filePath string) domain.Package {
 			case ast.Typ:
 				typeSpec := object.Decl.(*ast.TypeSpec)
 
+				if typeSpec.TypeParams != nil {
+					var params []string
+					for _, v := range typeSpec.TypeParams.List {
+						for _, v := range v.Names {
+							params = append(params, v.String())
+						}
+					}
+					if len(params) > 0 {
+						name = name + "[" + strings.Join(params, ",") + "]"
+					}
+				}
 				switch typeSpec.Type.(type) {
 				case *ast.StructType:
 					structType := typeSpec.Type.(*ast.StructType)
@@ -241,6 +252,9 @@ func exprToField(fieldName string, expr ast.Expr) (*domain.Field, error) {
 	case *ast.ChanType:
 		field := chanTypeToField(fieldName, fieldType)
 		return &field, nil
+	case *ast.IndexExpr: // generic goes here
+		field, err := indexExprToField(fieldName, fieldType)
+		return &field, err
 	default:
 		return nil, fmt.Errorf("unknown Field Type %s", reflect.TypeOf(expr).String())
 	}

cmd/generate.go

@@ -32,7 +32,7 @@ var (
 				options = append(options, astParser.WithRecursive())
 			}
 
-			if exclusion!=""{
+			if exclusion != "" {
 				options = append(options, astParser.WithFileExclusion(exclusion))
 			}
 

domain/interface.go

@@ -10,6 +10,12 @@ type (
 )
 
 func (domainInterface Interface) IsImplementedByClass(class Class) bool {
+
+	// no functions most probably due this being not an interface but a constrains
+	if len(domainInterface.Functions) == 0 {
+		return false
+	}
+
 	for _, interfaceFunction := range domainInterface.Functions {
 		var interfaceFunctionIsImplemented = false
 		for _, classFunction := range class.Functions {

formatter/plantUml.go

@@ -199,7 +199,7 @@ func FormatPlantUML(packages domain.Packages) string {
 }
 
 func FormatRelation(class domain.Class, class2 domain.Class) string {
-	return fmt.Sprintf("%s --> %s", class.Name, class2.Name)
+	return fmt.Sprintf(`"%s" --> "%s"`, class.Name, class2.Name)
 }
 
 func FormatRelations(classes domain.Classes) string {
@@ -221,7 +221,7 @@ func FormatRelations(classes domain.Classes) string {
 }
 
 func FormatImplementationRelation(class domain.Class, domainInterface domain.Interface) string {
-	return fmt.Sprintf("%s --|> %s", class.Name, domainInterface.Name)
+	return fmt.Sprintf(`"%s" --|> "%s"`, class.Name, domainInterface.Name)
 }
 
 func FormatImplementationRelations(classes domain.Classes, domainInterfaces domain.Interfaces) string {

go.mod

@@ -1,31 +1,32 @@
 module github.com/bykof/go-plantuml
 
-go 1.18
+go 1.19
 
 require (
 	github.com/magiconair/properties v1.8.6
 	github.com/mitchellh/go-homedir v1.1.0
-	github.com/spf13/cobra v1.4.0
-	github.com/spf13/viper v1.10.1
-	github.com/stretchr/testify v1.7.1
+	github.com/spf13/cobra v1.6.1
+	github.com/spf13/viper v1.14.0
+	github.com/stretchr/testify v1.8.1
 )
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/fsnotify/fsnotify v1.5.1 // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
-	github.com/inconshreveable/mousetrap v1.0.0 // indirect
-	github.com/mitchellh/mapstructure v1.4.3 // indirect
-	github.com/pelletier/go-toml v1.9.4 // indirect
+	github.com/inconshreveable/mousetrap v1.0.1 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/pelletier/go-toml v1.9.5 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.5 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/spf13/afero v1.6.0 // indirect
-	github.com/spf13/cast v1.4.1 // indirect
+	github.com/spf13/afero v1.9.2 // indirect
+	github.com/spf13/cast v1.5.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	github.com/subosito/gotenv v1.2.0 // indirect
-	golang.org/x/sys v0.0.0-20211210111614-af8b64212486 // indirect
-	golang.org/x/text v0.3.7 // indirect
-	gopkg.in/ini.v1 v1.66.2 // indirect
+	github.com/subosito/gotenv v1.4.1 // indirect
+	golang.org/x/sys v0.2.0 // indirect
+	golang.org/x/text v0.4.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )