add protogetter linter (#4069)

Author: ghostiam

Diff for: .golangci.reference.yml

@@ -2263,6 +2263,7 @@ linters:
     - prealloc
     - predeclared
     - promlinter
+    - protogetter
     - reassign
     - revive
     - rowserrcheck
@@ -2378,6 +2379,7 @@ linters:
     - prealloc
     - predeclared
     - promlinter
+    - protogetter
     - reassign
     - revive
     - rowserrcheck

Diff for: go.mod

@@ -34,6 +34,7 @@ require (
 	github.com/fatih/color v1.15.0
 	github.com/firefart/nonamedreturns v1.0.4
 	github.com/fzipp/gocyclo v0.6.0
+	github.com/ghostiam/protogetter v0.2.2
 	github.com/go-critic/go-critic v0.9.0
 	github.com/go-xmlfmt/xmlfmt v1.1.2
 	github.com/gofrs/flock v0.8.1

Diff for: go.sum

@@ -0,0 +1,59 @@
+package golinters
+
+import (
+	"sync"
+
+	"github.com/ghostiam/protogetter"
+	"golang.org/x/tools/go/analysis"
+
+	"github.com/golangci/golangci-lint/pkg/golinters/goanalysis"
+	"github.com/golangci/golangci-lint/pkg/lint/linter"
+	"github.com/golangci/golangci-lint/pkg/result"
+)
+
+func NewProtoGetter() *goanalysis.Linter {
+	var mu sync.Mutex
+	var resIssues []goanalysis.Issue
+
+	a := protogetter.NewAnalyzer()
+	a.Run = func(pass *analysis.Pass) (any, error) {
+		pgIssues := protogetter.Run(pass, protogetter.GolangciLintMode)
+
+		issues := make([]goanalysis.Issue, len(pgIssues))
+		for i, issue := range pgIssues {
+			report := &result.Issue{
+				FromLinter: a.Name,
+				Pos:        issue.Pos,
+				Text:       issue.Message,
+				Replacement: &result.Replacement{
+					Inline: &result.InlineFix{
+						StartCol:  issue.InlineFix.StartCol,
+						Length:    issue.InlineFix.Length,
+						NewString: issue.InlineFix.NewString,
+					},
+				},
+			}
+
+			issues[i] = goanalysis.NewIssue(report, pass)
+		}
+
+		if len(issues) == 0 {
+			return nil, nil
+		}
+
+		mu.Lock()
+		resIssues = append(resIssues, issues...)
+		mu.Unlock()
+
+		return nil, nil
+	}
+
+	return goanalysis.NewLinter(
+		a.Name,
+		a.Doc,
+		[]*analysis.Analyzer{a},
+		nil,
+	).WithIssuesReporter(func(*linter.Context) []goanalysis.Issue {
+		return resIssues
+	}).WithLoadMode(goanalysis.LoadModeTypesInfo)
+}

Diff for: pkg/golinters/protogetter.go

@@ -717,6 +717,13 @@ func (m Manager) GetAllSupportedLinterConfigs() []*linter.Config {
 			WithPresets(linter.PresetStyle).
 			WithURL("https://github.com/yeya24/promlinter"),
 
+		linter.NewConfig(golinters.NewProtoGetter()).
+			WithSince("v1.55.0").
+			WithPresets(linter.PresetBugs).
+			WithLoadForGoAnalysis().
+			WithAutoFix().
+			WithURL("https://github.com/ghostiam/protogetter"),
+
 		linter.NewConfig(golinters.NewReassign(reassignCfg)).
 			WithSince("1.49.0").
 			WithPresets(linter.PresetBugs).

Diff for: pkg/lint/lintersdb/manager.go

@@ -32,6 +32,7 @@ func TestSourcesFromTestdataSubDir(t *testing.T) {
 		"loggercheck",
 		"ginkgolinter",
 		"zerologlint",
+		"protogetter",
 	}
 
 	for _, dir := range subDirs {

Diff for: test/linters_test.go

@@ -0,0 +1,16 @@
+module protogetter
+
+go 1.19
+
+require (
+	google.golang.org/grpc v1.57.0
+	google.golang.org/protobuf v1.31.0
+)
+
+require (
+	github.com/golang/protobuf v1.5.3 // indirect
+	golang.org/x/net v0.9.0 // indirect
+	golang.org/x/sys v0.7.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230525234030-28d5490b6b19 // indirect
+)

Diff for: test/testdata/protogetter/go.mod

@@ -0,0 +1,23 @@
+package proto
+
+func (x *Embedded) CustomMethod() interface{} {
+	return nil
+}
+
+type Other struct {
+}
+
+func (x *Other) MyMethod(certs *Test) *Embedded {
+	return nil
+}
+
+func (x *Test) Equal(v *Test) bool {
+	return false
+}
+
+func (x *Embedded) SetS(s string) {
+	x.S = s
+}
+
+func (x *Embedded) SetMap(_ map[string]string) {
+}