feat: suggested fixes

.github/workflows/checks.yml

@@ -4,7 +4,6 @@ on:
   push:
     branches: [ main ]
   pull_request:
-    branches: [ main ]
   workflow_dispatch:
 
 jobs:

sloglint.go

@@ -218,7 +218,17 @@ func visit(pass *analysis.Pass, opts *Options, node ast.Node, stack []ast.Node)
 		if sel, ok := call.Args[0].(*ast.SelectorExpr); ok {
 			if obj := pass.TypesInfo.ObjectOf(sel.Sel); obj != nil {
 				if obj.Pkg().Name() == "io" && obj.Name() == "Discard" {
-					pass.Reportf(call.Pos(), "use slog.DiscardHandler instead")
+					pass.Report(analysis.Diagnostic{
+						Pos:     call.Pos(),
+						Message: "use slog.DiscardHandler instead",
+						SuggestedFixes: []analysis.SuggestedFix{{
+							TextEdits: []analysis.TextEdit{{
+								Pos:     call.Pos(),
+								End:     call.End(),
+								NewText: []byte("slog.DiscardHandler"),
+							}},
+						}},
+					})
 				}
 			}
 		}

sloglint_test.go

@@ -33,7 +33,7 @@ func TestAnalyzer(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			analyzer := New(&tt.opts)
 			testdata := analysistest.TestData()
-			analysistest.Run(t, testdata, analyzer, tt.dir)
+			analysistest.RunWithSuggestedFixes(t, testdata, analyzer, tt.dir)
 		})
 	}
 }

testdata/src/discard_handler/discard_handler.go

@@ -5,7 +5,7 @@ import (
 	"log/slog"
 )
 
-func tests() {
-	slog.NewTextHandler(io.Discard, nil) // want `use slog.DiscardHandler instead`
-	slog.NewJSONHandler(io.Discard, nil) // want `use slog.DiscardHandler instead`
+func _() {
+	_ = slog.NewTextHandler(io.Discard, nil) // want `use slog.DiscardHandler instead`
+	_ = slog.NewJSONHandler(io.Discard, nil) // want `use slog.DiscardHandler instead`
 }

testdata/src/discard_handler/discard_handler.go.golden

@@ -0,0 +1,11 @@
+package discard_handler
+
+import (
+	"io"
+	"log/slog"
+)
+
+func _() {
+	_ = slog.DiscardHandler // want `use slog.DiscardHandler instead`
+	_ = slog.DiscardHandler // want `use slog.DiscardHandler instead`
+}