review

.golangci.reference.yml

@@ -1073,9 +1073,9 @@ linters-settings:
         alias: $1$2
 
   interfacebloat:
-    # The number of allowed methods for an interface.
+    # The maximum number of methods allowed for an interface.
     # Default: 10
-    len: 5
+    max: 5
 
   ireturn:
     # ireturn allows using `allow` and `reject` settings at the same time.

go.mod

@@ -74,7 +74,7 @@ require (
 	github.com/ryancurrah/gomodguard v1.2.4
 	github.com/ryanrolds/sqlclosecheck v0.3.0
 	github.com/sanposhiho/wastedassign/v2 v2.0.6
-	github.com/sashamelentyev/interfacebloat v1.0.0
+	github.com/sashamelentyev/interfacebloat v1.1.0
 	github.com/sashamelentyev/usestdlibvars v1.10.0
 	github.com/securego/gosec/v2 v2.12.0
 	github.com/shazow/go-diff v0.0.0-20160112020656-b6b7b6733b8c

pkg/config/linters_settings.go

@@ -456,7 +456,7 @@ type ImportAsAlias struct {
 }
 
 type InterfaceBloatSettings struct {
-	Len int `mapstructure:"len"`
+	Max int `mapstructure:"max"`
 }
 
 type IreturnSettings struct {

pkg/golinters/interfacebloat.go

@@ -14,7 +14,7 @@ func NewInterfaceBloat(settings *config.InterfaceBloatSettings) *goanalysis.Lint
 	cfgMap := make(map[string]map[string]interface{})
 	if settings != nil {
 		cfgMap[a.Name] = map[string]interface{}{
-			analyzer.InterfaceLenFlag: settings.Len,
+			analyzer.InterfaceMaxMethodsFlag: settings.Max,
 		}
 	}
 

test/testdata/interfacebloat.go

@@ -3,48 +3,124 @@ package testdata
 
 import "time"
 
-type _ interface { // ERROR "length of interface greater than 10"
-	a() time.Duration
-	b()
-	c()
-	d()
-	f()
-	g()
-	h()
-	i()
-	j()
-	k()
-	l()
-}
-
-func _() {
-	var _ interface { // ERROR "length of interface greater than 10"
-		a() time.Duration
-		b()
-		c()
-		d()
-		f()
-		g()
-		h()
-		i()
-		j()
-		k()
-		l()
+type InterfaceBloatExample01 interface { // ERROR "the interface has more than 10 methods: 11"
+	a01() time.Duration
+	a02()
+	a03()
+	a04()
+	a05()
+	a06()
+	a07()
+	a08()
+	a09()
+	a10()
+	a11()
+}
+
+func InterfaceBloatExample02() {
+	var _ interface { // ERROR "the interface has more than 10 methods: 11"
+		a01() time.Duration
+		a02()
+		a03()
+		a04()
+		a05()
+		a06()
+		a07()
+		a08()
+		a09()
+		a10()
+		a11()
+	}
+}
+
+func InterfaceBloatExample03() interface { // ERROR "the interface has more than 10 methods: 11"
+	a01() time.Duration
+	a02()
+	a03()
+	a04()
+	a05()
+	a06()
+	a07()
+	a08()
+	a09()
+	a10()
+	a11()
+} {
+	return nil
+}
+
+type InterfaceBloatExample04 struct {
+	Foo interface { // ERROR "the interface has more than 10 methods: 11"
+		a01() time.Duration
+		a02()
+		a03()
+		a04()
+		a05()
+		a06()
+		a07()
+		a08()
+		a09()
+		a10()
+		a11()
+	}
+}
+
+type InterfaceBloatSmall01 interface {
+	a01() time.Duration
+	a02()
+	a03()
+	a04()
+	a05()
+}
+
+type InterfaceBloatSmall02 interface {
+	a06()
+	a07()
+	a08()
+	a09()
+	a10()
+	a11()
+}
+
+type InterfaceBloatExample05 interface {
+	InterfaceBloatSmall01
+	InterfaceBloatSmall02
+}
+
+type InterfaceBloatExample06 interface {
+	interface { // ERROR "the interface has more than 10 methods: 11"
+		a01() time.Duration
+		a02()
+		a03()
+		a04()
+		a05()
+		a06()
+		a07()
+		a08()
+		a09()
+		a10()
+		a11()
 	}
 }
 
-func __() interface { // ERROR "length of interface greater than 10"
-	a() time.Duration
-	b()
-	c()
-	d()
-	f()
-	g()
-	h()
-	i()
-	j()
-	k()
-	l()
+type InterfaceBloatTypeGeneric interface {
+	~uint8 | ~uint16 | ~uint32 | ~uint64 | uint |
+		~int8 | ~int16 | ~int32 | ~int64 | int |
+		~float32 | ~float64 |
+		~string
+}
+
+func InterfaceBloatExampleNoProblem() interface {
+	a01() time.Duration
+	a02()
+	a03()
+	a04()
+	a05()
+	a06()
+	a07()
+	a08()
+	a09()
+	a10()
 } {
 	return nil
 }