Address issues raised by linter (comment/error format and pre-allocat…

…ion)

Signed-off-by: Marvin Beckers <[email protected]>

examples/pkg/apis/example/register.go

@@ -24,15 +24,15 @@ import (
 
 const GroupName = "example.dev"
 
-// SchemeGroupVersion is group version used to register these objects
+// SchemeGroupVersion is group version used to register these objects.
 var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: runtime.APIVersionInternal}
 
-// Kind takes an unqualified kind and returns back a Group qualified GroupKind
+// Kind takes an unqualified kind and returns back a Group qualified GroupKind.
 func Kind(kind string) schema.GroupKind {
 	return SchemeGroupVersion.WithKind(kind).GroupKind()
 }
 
-// Resource takes an unqualified resource and returns a Group qualified GroupResource
+// Resource takes an unqualified resource and returns a Group qualified GroupResource.
 func Resource(resource string) schema.GroupResource {
 	return SchemeGroupVersion.WithResource(resource).GroupResource()
 }

examples/pkg/apis/example/v1/register.go

@@ -24,15 +24,15 @@ import (
 	"acme.corp/pkg/apis/example"
 )
 
-// SchemeGroupVersion is group version used to register these objects
+// SchemeGroupVersion is group version used to register these objects.
 var SchemeGroupVersion = schema.GroupVersion{Group: example.GroupName, Version: "v1"}
 
-// Kind takes an unqualified kind and returns back a Group qualified GroupKind
+// Kind takes an unqualified kind and returns back a Group qualified GroupKind.
 func Kind(kind string) schema.GroupKind {
 	return SchemeGroupVersion.WithKind(kind).GroupKind()
 }
 
-// Resource takes an unqualified resource and returns a Group qualified GroupResource
+// Resource takes an unqualified resource and returns a Group qualified GroupResource.
 func Resource(resource string) schema.GroupResource {
 	return SchemeGroupVersion.WithResource(resource).GroupResource()
 }

examples/pkg/apis/example/v1alpha1/register.go

@@ -24,15 +24,15 @@ import (
 	"acme.corp/pkg/apis/example"
 )
 
-// SchemeGroupVersion is group version used to register these objects
+// SchemeGroupVersion is group version used to register these objects.
 var SchemeGroupVersion = schema.GroupVersion{Group: example.GroupName, Version: "v1alpha1"}
 
-// Kind takes an unqualified kind and returns back a Group qualified GroupKind
+// Kind takes an unqualified kind and returns back a Group qualified GroupKind.
 func Kind(kind string) schema.GroupKind {
 	return SchemeGroupVersion.WithKind(kind).GroupKind()
 }
 
-// Resource takes an unqualified resource and returns a Group qualified GroupResource
+// Resource takes an unqualified resource and returns a Group qualified GroupResource.
 func Resource(resource string) schema.GroupResource {
 	return SchemeGroupVersion.WithResource(resource).GroupResource()
 }

examples/pkg/apis/example/v1beta1/register.go

@@ -24,15 +24,15 @@ import (
 	"acme.corp/pkg/apis/example"
 )
 
-// SchemeGroupVersion is group version used to register these objects
+// SchemeGroupVersion is group version used to register these objects.
 var SchemeGroupVersion = schema.GroupVersion{Group: example.GroupName, Version: "v1beta1"}
 
-// Kind takes an unqualified kind and returns back a Group qualified GroupKind
+// Kind takes an unqualified kind and returns back a Group qualified GroupKind.
 func Kind(kind string) schema.GroupKind {
 	return SchemeGroupVersion.WithKind(kind).GroupKind()
 }
 
-// Resource takes an unqualified resource and returns a Group qualified GroupResource
+// Resource takes an unqualified resource and returns a Group qualified GroupResource.
 func Resource(resource string) schema.GroupResource {
 	return SchemeGroupVersion.WithResource(resource).GroupResource()
 }

examples/pkg/apis/example/v2/register.go

@@ -24,15 +24,15 @@ import (
 	"acme.corp/pkg/apis/example"
 )
 
-// SchemeGroupVersion is group version used to register these objects
+// SchemeGroupVersion is group version used to register these objects.
 var SchemeGroupVersion = schema.GroupVersion{Group: example.GroupName, Version: "v2"}
 
-// Kind takes an unqualified kind and returns back a Group qualified GroupKind
+// Kind takes an unqualified kind and returns back a Group qualified GroupKind.
 func Kind(kind string) schema.GroupKind {
 	return SchemeGroupVersion.WithKind(kind).GroupKind()
 }
 
-// Resource takes an unqualified resource and returns a Group qualified GroupResource
+// Resource takes an unqualified resource and returns a Group qualified GroupResource.
 func Resource(resource string) schema.GroupResource {
 	return SchemeGroupVersion.WithResource(resource).GroupResource()
 }

examples/pkg/apis/example3/v1/register.go

@@ -24,15 +24,15 @@ import (
 	example "acme.corp/pkg/apis/example3"
 )
 
-// SchemeGroupVersion is group version used to register these objects
+// SchemeGroupVersion is group version used to register these objects.
 var SchemeGroupVersion = schema.GroupVersion{Group: example.GroupName, Version: "v1"}
 
-// Kind takes an unqualified kind and returns back a Group qualified GroupKind
+// Kind takes an unqualified kind and returns back a Group qualified GroupKind.
 func Kind(kind string) schema.GroupKind {
 	return SchemeGroupVersion.WithKind(kind).GroupKind()
 }
 
-// Resource takes an unqualified resource and returns a Group qualified GroupResource
+// Resource takes an unqualified resource and returns a Group qualified GroupResource.
 func Resource(resource string) schema.GroupResource {
 	return SchemeGroupVersion.WithResource(resource).GroupResource()
 }

examples/pkg/apis/existinginterfaces/v1/register.go

@@ -24,15 +24,15 @@ import (
 	"acme.corp/pkg/apis/existinginterfaces"
 )
 
-// SchemeGroupVersion is group version used to register these objects
+// SchemeGroupVersion is group version used to register these objects.
 var SchemeGroupVersion = schema.GroupVersion{Group: existinginterfaces.GroupName, Version: "v1"}
 
-// Kind takes an unqualified kind and returns back a Group qualified GroupKind
+// Kind takes an unqualified kind and returns back a Group qualified GroupKind.
 func Kind(kind string) schema.GroupKind {
 	return SchemeGroupVersion.WithKind(kind).GroupKind()
 }
 
-// Resource takes an unqualified resource and returns a Group qualified GroupResource
+// Resource takes an unqualified resource and returns a Group qualified GroupResource.
 func Resource(resource string) schema.GroupResource {
 	return SchemeGroupVersion.WithResource(resource).GroupResource()
 }

examples/pkg/apis/secondexample/v1/register.go

@@ -24,15 +24,15 @@ import (
 	example "acme.corp/pkg/apis/secondexample"
 )
 
-// SchemeGroupVersion is group version used to register these objects
+// SchemeGroupVersion is group version used to register these objects.
 var SchemeGroupVersion = schema.GroupVersion{Group: example.GroupName, Version: "v1"}
 
-// Kind takes an unqualified kind and returns back a Group qualified GroupKind
+// Kind takes an unqualified kind and returns back a Group qualified GroupKind.
 func Kind(kind string) schema.GroupKind {
 	return SchemeGroupVersion.WithKind(kind).GroupKind()
 }
 
-// Resource takes an unqualified resource and returns a Group qualified GroupResource
+// Resource takes an unqualified resource and returns a Group qualified GroupResource.
 func Resource(resource string) schema.GroupResource {
 	return SchemeGroupVersion.WithResource(resource).GroupResource()
 }

main.go

@@ -55,21 +55,21 @@ var (
 	// them names for use on the command line.
 	// Each output rule turns into two command line options:
 	// - output:<generator>:<form> (per-generator output)
-	// - output:<form> (default output)
+	// - output:<form> (default output).
 	allOutputRules = map[string]genall.OutputRule{
 		"dir":       genall.OutputToDirectory(""),
 		"none":      genall.OutputToNothing,
 		"stdout":    genall.OutputToStdout,
 		"artifacts": genall.OutputArtifacts{},
 	}
 
-	// optionsRegistry contains all the marker definitions used to process command line options
+	// optionsRegistry contains all the marker definitions used to process command line options.
 	optionsRegistry = &markers.Registry{}
 )
 
 func init() {
 	for genName, gen := range allGenerators {
-		// make the generator options marker itself
+		// make the generator options marker itself.
 		defn := markers.Must(markers.MakeDefinition(genName, markers.DescribesPackage, gen))
 		if err := optionsRegistry.Register(defn); err != nil {
 			panic(err)
@@ -80,7 +80,7 @@ func init() {
 			}
 		}
 
-		// make per-generation output rule markers
+		// make per-generation output rule markers.
 		for ruleName, rule := range allOutputRules {
 			ruleMarker := markers.Must(markers.MakeDefinition(fmt.Sprintf("output:%s:%s", genName, ruleName), markers.DescribesPackage, rule))
 			if err := optionsRegistry.Register(ruleMarker); err != nil {
@@ -94,7 +94,7 @@ func init() {
 		}
 	}
 
-	// make "default output" output rule markers
+	// make "default output" output rule markers.
 	for ruleName, rule := range allOutputRules {
 		ruleMarker := markers.Must(markers.MakeDefinition("output:"+ruleName, markers.DescribesPackage, rule))
 		if err := optionsRegistry.Register(ruleMarker); err != nil {
@@ -107,7 +107,7 @@ func init() {
 		}
 	}
 
-	// add in the common options markers
+	// add in the common options markers.
 	if err := genall.RegisterOptionsMarkers(optionsRegistry); err != nil {
 		panic(err)
 	}
@@ -143,23 +143,23 @@ func main() {
 	code-generator lister -ww
 `,
 		RunE: func(c *cobra.Command, rawOpts []string) error {
-			// print version if asked for it
+			// print version if asked for it.
 			if showVersion {
 				version.Print()
 				return nil
 			}
 
-			// print the help if we asked for it (since we've got a different help flag :-/), then bail
+			// print the help if we asked for it (since we've got a different help flag :-/), then bail.
 			if helpLevel > 0 {
 				return c.Usage()
 			}
 
-			// print the marker docs if we asked for them, then bail
+			// print the marker docs if we asked for them, then bail.
 			if whichLevel > 0 {
 				return printMarkerDocs(c, rawOpts, whichLevel)
 			}
 
-			// otherwise, set up the runtime for actually running the generators
+			// otherwise, set up the runtime for actually running the generators.
 			rt, err := genall.FromOptions(optionsRegistry, rawOpts)
 			if err != nil {
 				return err
@@ -174,7 +174,7 @@ func main() {
 			}
 			return nil
 		},
-		SilenceUsage: true, // silence the usage, then print it out ourselves if it wasn't suppressed
+		SilenceUsage: true, // silence the usage, then print it out ourselves if it wasn't suppressed.
 	}
 	cmd.Flags().CountVarP(&whichLevel, "which-markers", "w", "print out all markers available with the requested generators\n(up to -www for the most detailed output, or -wwww for json output)")
 	cmd.Flags().CountVarP(&helpLevel, "detailed-help", "h", "print out more detailed help\n(up to -hhh for the most detailed output, or -hhhh for json output)")
@@ -194,7 +194,7 @@ func main() {
 
 	if err := cmd.Execute(); err != nil {
 		if _, noUsage := err.(noUsageError); !noUsage {
-			// print the usage unless we suppressed it
+			// print the usage unless we suppressed it.
 			if err := cmd.Usage(); err != nil {
 				panic(err)
 			}

pkg/flag/flags.go

@@ -22,7 +22,7 @@ import (
 	"github.com/spf13/pflag"
 )
 
-// Flags - Options accepted by generator
+// Flags are options accepted by the generator.
 type Flags struct {
 	// OutputDir is where the generated code is to be written to.
 	OutputDir string
@@ -65,15 +65,15 @@ func (f *Flags) AddTo(flagset *pflag.FlagSet) {
 // https://github.com/kcp-dev/code-generator/issues/4
 func ValidateFlags(f Flags) error {
 	if f.InputDir == "" {
-		return errors.New("input path to API definition is required.")
+		return errors.New("input path to API definition is required")
 	}
 
 	if f.ClientsetAPIPath == "" {
-		return errors.New("specifying client API path is required currently.")
+		return errors.New("specifying client API path is required currently")
 	}
 
 	if len(f.GroupVersions) == 0 {
-		return errors.New("list of group versions for which the clients are to be generated is required.")
+		return errors.New("list of group versions for which the clients are to be generated is required")
 	}
 
 	return nil

pkg/flag/flags_test.go

@@ -23,7 +23,7 @@ import (
 	. "github.com/onsi/gomega"
 )
 
-// TODO: Rewrite into generic Go Testing format
+// TODO: Rewrite into generic Go Testing format.
 func TestMetadata(t *testing.T) {
 	RegisterFailHandler(Fail)
 	RunSpecs(t, "Test flags suite")
@@ -47,19 +47,19 @@ var _ = Describe("Test flag inputs", func() {
 	It("verify input path error", func() {
 		f.InputDir = ""
 		err := ValidateFlags(f)
-		Expect(err.Error()).To(ContainSubstring("input path to API definition is required."))
+		Expect(err.Error()).To(ContainSubstring("input path to API definition is required"))
 	})
 
 	It("verify clientsetAPI path", func() {
 		f.ClientsetAPIPath = ""
 		err := ValidateFlags(f)
-		Expect(err.Error()).To(ContainSubstring("specifying client API path is required currently."))
+		Expect(err.Error()).To(ContainSubstring("specifying client API path is required currently"))
 	})
 
 	It("verify group version list", func() {
 		f.GroupVersions = []string{}
 		err := ValidateFlags(f)
-		Expect(err.Error()).To(ContainSubstring("list of group versions for which the clients are to be generated is required."))
+		Expect(err.Error()).To(ContainSubstring("list of group versions for which the clients are to be generated is required"))
 	})
 
 })

pkg/generators/informergen/informergen.go

@@ -109,7 +109,7 @@ func (g Generator) Generate(ctx *genall.GenerationContext) error {
 
 	logger := klog.Background()
 
-	var onlyGroups []parser.Group
+	onlyGroups := make([]parser.Group, 0, len(groupVersionKinds))
 	for group := range groupVersionKinds {
 		onlyGroups = append(onlyGroups, group)
 	}

pkg/parser/markers.go

@@ -100,7 +100,7 @@ func IsNamespaced(info *markers.TypeInfo) bool {
 	return !IsClusterScoped(info)
 }
 
-// SupportedVerbs determines which verbs the type supports
+// SupportedVerbs determines which verbs the type supports.
 func SupportedVerbs(info *markers.TypeInfo) (sets.Set[string], error) {
 	if info.Markers.Get(NoVerbsMarker.Name) != nil {
 		return sets.New[string](), nil
@@ -146,7 +146,7 @@ func ClientExtensions(info *markers.TypeInfo) []Extension {
 	if !ok || values == nil {
 		return nil
 	}
-	var extensions []Extension
+	extensions := make([]Extension, 0, len(values))
 	for _, item := range values {
 		extension, ok := item.(extension)
 		if !ok {

pkg/util/util.go

@@ -34,7 +34,7 @@ func LowerFirst(s string) string {
 	return strings.ToLower(string(s[0])) + s[1:]
 }
 
-// UpperFirst sets the first alphabet to upperCase/
+// UpperFirst sets the first alphabet to upperCase.
 func UpperFirst(s string) string {
 	return strings.ToUpper(string(s[0])) + s[1:]
 }