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// Copyright 2023 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.
// Code generated by "gen.bash" from internal/trace; DO NOT EDIT.
//go:build go1.23
package raw
import (
"encoding/binary"
"strconv"
"strings"
"golang.org/x/exp/trace/internal/tracev2"
"golang.org/x/exp/trace/internal/version"
)
// Event is a simple representation of a trace event.
//
// Note that this typically includes much more than just
// timestamped events, and it also represents parts of the
// trace format's framing. (But not interpreted.)
type Event struct {
Version version.Version
Ev tracev2.EventType
Args []uint64
Data []byte
}
// String returns the canonical string representation of the event.
//
// This format is the same format that is parsed by the TextReader
// and emitted by the TextWriter.
func (e *Event) String() string {
spec := e.Version.Specs()[e.Ev]
var s strings.Builder
s.WriteString(spec.Name)
for i := range spec.Args {
s.WriteString(" ")
s.WriteString(spec.Args[i])
s.WriteString("=")
s.WriteString(strconv.FormatUint(e.Args[i], 10))
}
if spec.IsStack {
frames := e.Args[len(spec.Args):]
for i := 0; i < len(frames); i++ {
if i%4 == 0 {
s.WriteString("\n\t")
} else {
s.WriteString(" ")
}
s.WriteString(frameFields[i%4])
s.WriteString("=")
s.WriteString(strconv.FormatUint(frames[i], 10))
}
}
if e.Data != nil {
s.WriteString("\n\tdata=")
s.WriteString(strconv.Quote(string(e.Data)))
}
return s.String()
}
// EncodedSize returns the canonical encoded size of an event.
func (e *Event) EncodedSize() int {
size := 1
var buf [binary.MaxVarintLen64]byte
for _, arg := range e.Args {
size += binary.PutUvarint(buf[:], arg)
}
spec := e.Version.Specs()[e.Ev]
if spec.HasData {
size += binary.PutUvarint(buf[:], uint64(len(e.Data)))
size += len(e.Data)
}
return size
}
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