111 lines
3 KiB
Go
111 lines
3 KiB
Go
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build !go1.21
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package slog
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import (
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"time"
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"golang.org/x/exp/slog"
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)
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// A Value can represent any Go value, but unlike type any,
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// it can represent most small values without an allocation.
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// The zero Value corresponds to nil.
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type Value = slog.Value
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// Kind is the kind of a Value.
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type Kind = slog.Kind
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// The following list is sorted alphabetically, but it's also important that
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// KindAny is 0 so that a zero Value represents nil.
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const (
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KindAny = slog.KindAny
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KindBool = slog.KindBool
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KindDuration = slog.KindDuration
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KindFloat64 = slog.KindFloat64
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KindInt64 = slog.KindInt64
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KindString = slog.KindString
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KindTime = slog.KindTime
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KindUint64 = slog.KindUint64
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KindGroup = slog.KindGroup
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KindLogValuer = slog.KindLogValuer
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)
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//////////////// Constructors
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// StringValue returns a new Value for a string.
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func StringValue(value string) Value {
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return slog.StringValue(value)
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}
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// IntValue returns a Value for an int.
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func IntValue(v int) Value {
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return slog.IntValue(v)
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}
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// Int64Value returns a Value for an int64.
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func Int64Value(v int64) Value {
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return slog.Int64Value(v)
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}
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// Uint64Value returns a Value for a uint64.
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func Uint64Value(v uint64) Value {
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return slog.Uint64Value(v)
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}
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// Float64Value returns a Value for a floating-point number.
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func Float64Value(v float64) Value {
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return slog.Float64Value(v)
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}
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// BoolValue returns a Value for a bool.
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func BoolValue(v bool) Value {
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return slog.BoolValue(v)
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}
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// TimeValue returns a Value for a time.Time.
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// It discards the monotonic portion.
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func TimeValue(v time.Time) Value {
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return slog.TimeValue(v)
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}
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// DurationValue returns a Value for a time.Duration.
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func DurationValue(v time.Duration) Value {
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return slog.DurationValue(v)
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}
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// GroupValue returns a new Value for a list of Attrs.
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// The caller must not subsequently mutate the argument slice.
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func GroupValue(as ...Attr) Value {
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return slog.GroupValue(as...)
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}
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// AnyValue returns a Value for the supplied value.
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//
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// If the supplied value is of type Value, it is returned
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// unmodified.
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//
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// Given a value of one of Go's predeclared string, bool, or
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// (non-complex) numeric types, AnyValue returns a Value of kind
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// String, Bool, Uint64, Int64, or Float64. The width of the
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// original numeric type is not preserved.
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//
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// Given a time.Time or time.Duration value, AnyValue returns a Value of kind
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// KindTime or KindDuration. The monotonic time is not preserved.
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//
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// For nil, or values of all other types, including named types whose
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// underlying type is numeric, AnyValue returns a value of kind KindAny.
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func AnyValue(v any) Value {
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return slog.AnyValue(v)
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}
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// A LogValuer is any Go value that can convert itself into a Value for logging.
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//
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// This mechanism may be used to defer expensive operations until they are
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// needed, or to expand a single value into a sequence of components.
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type LogValuer = slog.LogValuer
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