chore: vendor

vendor/golang.org/x/exp/slog/value_119.go

@@ -0,0 +1,53 @@
+// 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.
+
+//go:build go1.19 && !go1.20
+
+package slog
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+type (
+	stringptr unsafe.Pointer // used in Value.any when the Value is a string
+	groupptr  unsafe.Pointer // used in Value.any when the Value is a []Attr
+)
+
+// StringValue returns a new Value for a string.
+func StringValue(value string) Value {
+	hdr := (*reflect.StringHeader)(unsafe.Pointer(&value))
+	return Value{num: uint64(hdr.Len), any: stringptr(hdr.Data)}
+}
+
+func (v Value) str() string {
+	var s string
+	hdr := (*reflect.StringHeader)(unsafe.Pointer(&s))
+	hdr.Data = uintptr(v.any.(stringptr))
+	hdr.Len = int(v.num)
+	return s
+}
+
+// String returns Value's value as a string, formatted like fmt.Sprint. Unlike
+// the methods Int64, Float64, and so on, which panic if v is of the
+// wrong kind, String never panics.
+func (v Value) String() string {
+	if sp, ok := v.any.(stringptr); ok {
+		// Inlining this code makes a huge difference.
+		var s string
+		hdr := (*reflect.StringHeader)(unsafe.Pointer(&s))
+		hdr.Data = uintptr(sp)
+		hdr.Len = int(v.num)
+		return s
+	}
+	return string(v.append(nil))
+}
+
+// GroupValue returns a new Value for a list of Attrs.
+// The caller must not subsequently mutate the argument slice.
+func GroupValue(as ...Attr) Value {
+	hdr := (*reflect.SliceHeader)(unsafe.Pointer(&as))
+	return Value{num: uint64(hdr.Len), any: groupptr(hdr.Data)}
+}