--- /dev/null
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package export_test
+
+import (
+ "context"
+ "errors"
+ "os"
+ "time"
+
+ "golang.org/x/tools/internal/event"
+ "golang.org/x/tools/internal/event/core"
+ "golang.org/x/tools/internal/event/export"
+ "golang.org/x/tools/internal/event/keys"
+ "golang.org/x/tools/internal/event/label"
+)
+
+func ExampleLog() {
+ ctx := context.Background()
+ event.SetExporter(timeFixer(export.LogWriter(os.Stdout, false)))
+ anInt := keys.NewInt("myInt", "an integer")
+ aString := keys.NewString("myString", "a string")
+ event.Log(ctx, "my event", anInt.Of(6))
+ event.Error(ctx, "error event", errors.New("an error"), aString.Of("some string value"))
+ // Output:
+ // 2020/03/05 14:27:48 my event
+ // myInt=6
+ // 2020/03/05 14:27:48 error event: an error
+ // myString="some string value"
+}
+
+func timeFixer(output event.Exporter) event.Exporter {
+ at, _ := time.Parse(time.RFC3339Nano, "2020-03-05T14:27:48Z")
+ return func(ctx context.Context, ev core.Event, lm label.Map) context.Context {
+ copy := core.CloneEvent(ev, at)
+ return output(ctx, copy, lm)
+ }
+}