src/syscall/zx/error.go

// Copyright 2022 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 zx

import "internal/oserror"

// Error is a Status with associated error text.
// It is used as a Go error.
type Error struct {
	Status Status
	Text   string
}

var _ error = (*Error)(nil)

func (e *Error) Error() string {
	if e.Text == "" {
		return "zx.Status: " + e.Status.String()
	}
	return e.Status.String() + ": " + e.Text
}

func (e *Error) Is(target error) bool {
	switch target {
	case oserror.ErrPermission:
		return e.Status == ErrAccessDenied
	case oserror.ErrExist:
		return e.Status == ErrAlreadyExists
	case oserror.ErrNotExist:
		return e.Status == ErrNotFound
	}
	return false
}