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vendor: add new dependencies

This commit is contained in:
Cadey Ratio 2017-01-23 08:04:33 -08:00
parent 9b21edfbce
commit 5fe915787d
10 changed files with 1151 additions and 0 deletions
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3
vendor-log
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@ -24,3 +24,6 @@ f6b343c37ca80bfa8ea539da67a0b621f84fab1d golang.org/x/crypto/acme
f6b343c37ca80bfa8ea539da67a0b621f84fab1d golang.org/x/crypto/acme/autocert f6b343c37ca80bfa8ea539da67a0b621f84fab1d golang.org/x/crypto/acme/autocert
45e771701b814666a7eb299e6c7a57d0b1799e91 golang.org/x/net/context 45e771701b814666a7eb299e6c7a57d0b1799e91 golang.org/x/net/context
45e771701b814666a7eb299e6c7a57d0b1799e91 golang.org/x/net/context/ctxhttp 45e771701b814666a7eb299e6c7a57d0b1799e91 golang.org/x/net/context/ctxhttp
e6ac2fc51e89a3249e82157fa0bb7a18ef9dd5bb github.com/kr/pretty
bb797dc4fb8320488f47bf11de07a733d7233e1f github.com/kr/text
3b8db5e93c4c02efbc313e17b2e796b0914a01fb go.uber.org/atomic

158
vendor/github.com/kr/pretty/diff.go generated vendored Normal file
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@ -0,0 +1,158 @@
package pretty
import (
"fmt"
"io"
"reflect"
)
type sbuf []string
func (s *sbuf) Write(b []byte) (int, error) {
*s = append(*s, string(b))
return len(b), nil
}
// Diff returns a slice where each element describes
// a difference between a and b.
func Diff(a, b interface{}) (desc []string) {
Fdiff((*sbuf)(&desc), a, b)
return desc
}
// Fdiff writes to w a description of the differences between a and b.
func Fdiff(w io.Writer, a, b interface{}) {
diffWriter{w: w}.diff(reflect.ValueOf(a), reflect.ValueOf(b))
}
type diffWriter struct {
w io.Writer
l string // label
}
func (w diffWriter) printf(f string, a ...interface{}) {
var l string
if w.l != "" {
l = w.l + ": "
}
fmt.Fprintf(w.w, l+f, a...)
}
func (w diffWriter) diff(av, bv reflect.Value) {
if !av.IsValid() && bv.IsValid() {
w.printf("nil != %#v", bv.Interface())
return
}
if av.IsValid() && !bv.IsValid() {
w.printf("%#v != nil", av.Interface())
return
}
if !av.IsValid() && !bv.IsValid() {
return
}
at := av.Type()
bt := bv.Type()
if at != bt {
w.printf("%v != %v", at, bt)
return
}
// numeric types, including bool
if at.Kind() < reflect.Array {
a, b := av.Interface(), bv.Interface()
if a != b {
w.printf("%#v != %#v", a, b)
}
return
}
switch at.Kind() {
case reflect.String:
a, b := av.Interface(), bv.Interface()
if a != b {
w.printf("%q != %q", a, b)
}
case reflect.Ptr:
switch {
case av.IsNil() && !bv.IsNil():
w.printf("nil != %v", bv.Interface())
case !av.IsNil() && bv.IsNil():
w.printf("%v != nil", av.Interface())
case !av.IsNil() && !bv.IsNil():
w.diff(av.Elem(), bv.Elem())
}
case reflect.Struct:
for i := 0; i < av.NumField(); i++ {
w.relabel(at.Field(i).Name).diff(av.Field(i), bv.Field(i))
}
case reflect.Slice:
lenA := av.Len()
lenB := bv.Len()
if lenA != lenB {
w.printf("%s[%d] != %s[%d]", av.Type(), lenA, bv.Type(), lenB)
break
}
for i := 0; i < lenA; i++ {
w.relabel(fmt.Sprintf("[%d]", i)).diff(av.Index(i), bv.Index(i))
}
case reflect.Map:
ak, both, bk := keyDiff(av.MapKeys(), bv.MapKeys())
for _, k := range ak {
w := w.relabel(fmt.Sprintf("[%#v]", k.Interface()))
w.printf("%q != (missing)", av.MapIndex(k))
}
for _, k := range both {
w := w.relabel(fmt.Sprintf("[%#v]", k.Interface()))
w.diff(av.MapIndex(k), bv.MapIndex(k))
}
for _, k := range bk {
w := w.relabel(fmt.Sprintf("[%#v]", k.Interface()))
w.printf("(missing) != %q", bv.MapIndex(k))
}
case reflect.Interface:
w.diff(reflect.ValueOf(av.Interface()), reflect.ValueOf(bv.Interface()))
default:
if !reflect.DeepEqual(av.Interface(), bv.Interface()) {
w.printf("%# v != %# v", Formatter(av.Interface()), Formatter(bv.Interface()))
}
}
}
func (d diffWriter) relabel(name string) (d1 diffWriter) {
d1 = d
if d.l != "" && name[0] != '[' {
d1.l += "."
}
d1.l += name
return d1
}
func keyDiff(a, b []reflect.Value) (ak, both, bk []reflect.Value) {
for _, av := range a {
inBoth := false
for _, bv := range b {
if reflect.DeepEqual(av.Interface(), bv.Interface()) {
inBoth = true
both = append(both, av)
break
}
}
if !inBoth {
ak = append(ak, av)
}
}
for _, bv := range b {
inBoth := false
for _, av := range a {
if reflect.DeepEqual(av.Interface(), bv.Interface()) {
inBoth = true
break
}
}
if !inBoth {
bk = append(bk, bv)
}
}
return
}

337
vendor/github.com/kr/pretty/formatter.go generated vendored Normal file
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@ -0,0 +1,337 @@
package pretty
import (
"fmt"
"io"
"reflect"
"strconv"
"text/tabwriter"
"github.com/kr/text"
)
const (
limit = 50
)
type formatter struct {
x interface{}
force bool
quote bool
}
// Formatter makes a wrapper, f, that will format x as go source with line
// breaks and tabs. Object f responds to the "%v" formatting verb when both the
// "#" and " " (space) flags are set, for example:
//
// fmt.Sprintf("%# v", Formatter(x))
//
// If one of these two flags is not set, or any other verb is used, f will
// format x according to the usual rules of package fmt.
// In particular, if x satisfies fmt.Formatter, then x.Format will be called.
func Formatter(x interface{}) (f fmt.Formatter) {
return formatter{x: x, quote: true}
}
func (fo formatter) String() string {
return fmt.Sprint(fo.x) // unwrap it
}
func (fo formatter) passThrough(f fmt.State, c rune) {
s := "%"
for i := 0; i < 128; i++ {
if f.Flag(i) {
s += string(i)
}
}
if w, ok := f.Width(); ok {
s += fmt.Sprintf("%d", w)
}
if p, ok := f.Precision(); ok {
s += fmt.Sprintf(".%d", p)
}
s += string(c)
fmt.Fprintf(f, s, fo.x)
}
func (fo formatter) Format(f fmt.State, c rune) {
if fo.force || c == 'v' && f.Flag('#') && f.Flag(' ') {
w := tabwriter.NewWriter(f, 4, 4, 1, ' ', 0)
p := &printer{tw: w, Writer: w, visited: make(map[visit]int)}
p.printValue(reflect.ValueOf(fo.x), true, fo.quote)
w.Flush()
return
}
fo.passThrough(f, c)
}
type printer struct {
io.Writer
tw *tabwriter.Writer
visited map[visit]int
depth int
}
func (p *printer) indent() *printer {
q := *p
q.tw = tabwriter.NewWriter(p.Writer, 4, 4, 1, ' ', 0)
q.Writer = text.NewIndentWriter(q.tw, []byte{'\t'})
return &q
}
func (p *printer) printInline(v reflect.Value, x interface{}, showType bool) {
if showType {
io.WriteString(p, v.Type().String())
fmt.Fprintf(p, "(%#v)", x)
} else {
fmt.Fprintf(p, "%#v", x)
}
}
// printValue must keep track of already-printed pointer values to avoid
// infinite recursion.
type visit struct {
v uintptr
typ reflect.Type
}
func (p *printer) printValue(v reflect.Value, showType, quote bool) {
if p.depth > 10 {
io.WriteString(p, "!%v(DEPTH EXCEEDED)")
return
}
switch v.Kind() {
case reflect.Bool:
p.printInline(v, v.Bool(), showType)
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
p.printInline(v, v.Int(), showType)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
p.printInline(v, v.Uint(), showType)
case reflect.Float32, reflect.Float64:
p.printInline(v, v.Float(), showType)
case reflect.Complex64, reflect.Complex128:
fmt.Fprintf(p, "%#v", v.Complex())
case reflect.String:
p.fmtString(v.String(), quote)
case reflect.Map:
t := v.Type()
if showType {
io.WriteString(p, t.String())
}
writeByte(p, '{')
if nonzero(v) {
expand := !canInline(v.Type())
pp := p
if expand {
writeByte(p, '\n')
pp = p.indent()
}
keys := v.MapKeys()
for i := 0; i < v.Len(); i++ {
showTypeInStruct := true
k := keys[i]
mv := v.MapIndex(k)
pp.printValue(k, false, true)
writeByte(pp, ':')
if expand {
writeByte(pp, '\t')
}
showTypeInStruct = t.Elem().Kind() == reflect.Interface
pp.printValue(mv, showTypeInStruct, true)
if expand {
io.WriteString(pp, ",\n")
} else if i < v.Len()-1 {
io.WriteString(pp, ", ")
}
}
if expand {
pp.tw.Flush()
}
}
writeByte(p, '}')
case reflect.Struct:
t := v.Type()
if v.CanAddr() {
addr := v.UnsafeAddr()
vis := visit{addr, t}
if vd, ok := p.visited[vis]; ok && vd < p.depth {
p.fmtString(t.String()+"{(CYCLIC REFERENCE)}", false)
break // don't print v again
}
p.visited[vis] = p.depth
}
if showType {
io.WriteString(p, t.String())
}
writeByte(p, '{')
if nonzero(v) {
expand := !canInline(v.Type())
pp := p
if expand {
writeByte(p, '\n')
pp = p.indent()
}
for i := 0; i < v.NumField(); i++ {
showTypeInStruct := true
if f := t.Field(i); f.Name != "" {
io.WriteString(pp, f.Name)
writeByte(pp, ':')
if expand {
writeByte(pp, '\t')
}
showTypeInStruct = labelType(f.Type)
}
pp.printValue(getField(v, i), showTypeInStruct, true)
if expand {
io.WriteString(pp, ",\n")
} else if i < v.NumField()-1 {
io.WriteString(pp, ", ")
}
}
if expand {
pp.tw.Flush()
}
}
writeByte(p, '}')
case reflect.Interface:
switch e := v.Elem(); {
case e.Kind() == reflect.Invalid:
io.WriteString(p, "nil")
case e.IsValid():
pp := *p
pp.depth++
pp.printValue(e, showType, true)
default:
io.WriteString(p, v.Type().String())
io.WriteString(p, "(nil)")
}
case reflect.Array, reflect.Slice:
t := v.Type()
if showType {
io.WriteString(p, t.String())
}
if v.Kind() == reflect.Slice && v.IsNil() && showType {
io.WriteString(p, "(nil)")
break
}
if v.Kind() == reflect.Slice && v.IsNil() {
io.WriteString(p, "nil")
break
}
writeByte(p, '{')
expand := !canInline(v.Type())
pp := p
if expand {
writeByte(p, '\n')
pp = p.indent()
}
for i := 0; i < v.Len(); i++ {
showTypeInSlice := t.Elem().Kind() == reflect.Interface
pp.printValue(v.Index(i), showTypeInSlice, true)
if expand {
io.WriteString(pp, ",\n")
} else if i < v.Len()-1 {
io.WriteString(pp, ", ")
}
}
if expand {
pp.tw.Flush()
}
writeByte(p, '}')
case reflect.Ptr:
e := v.Elem()
if !e.IsValid() {
writeByte(p, '(')
io.WriteString(p, v.Type().String())
io.WriteString(p, ")(nil)")
} else {
pp := *p
pp.depth++
writeByte(pp, '&')
pp.printValue(e, true, true)
}
case reflect.Chan:
x := v.Pointer()
if showType {
writeByte(p, '(')
io.WriteString(p, v.Type().String())
fmt.Fprintf(p, ")(%#v)", x)
} else {
fmt.Fprintf(p, "%#v", x)
}
case reflect.Func:
io.WriteString(p, v.Type().String())
io.WriteString(p, " {...}")
case reflect.UnsafePointer:
p.printInline(v, v.Pointer(), showType)
case reflect.Invalid:
io.WriteString(p, "nil")
}
}
func canInline(t reflect.Type) bool {
switch t.Kind() {
case reflect.Map:
return !canExpand(t.Elem())
case reflect.Struct:
for i := 0; i < t.NumField(); i++ {
if canExpand(t.Field(i).Type) {
return false
}
}
return true
case reflect.Interface:
return false
case reflect.Array, reflect.Slice:
return !canExpand(t.Elem())
case reflect.Ptr:
return false
case reflect.Chan, reflect.Func, reflect.UnsafePointer:
return false
}
return true
}
func canExpand(t reflect.Type) bool {
switch t.Kind() {
case reflect.Map, reflect.Struct,
reflect.Interface, reflect.Array, reflect.Slice,
reflect.Ptr:
return true
}
return false
}
func labelType(t reflect.Type) bool {
switch t.Kind() {
case reflect.Interface, reflect.Struct:
return true
}
return false
}
func (p *printer) fmtString(s string, quote bool) {
if quote {
s = strconv.Quote(s)
}
io.WriteString(p, s)
}
func tryDeepEqual(a, b interface{}) bool {
defer func() { recover() }()
return reflect.DeepEqual(a, b)
}
func writeByte(w io.Writer, b byte) {
w.Write([]byte{b})
}
func getField(v reflect.Value, i int) reflect.Value {
val := v.Field(i)
if val.Kind() == reflect.Interface && !val.IsNil() {
val = val.Elem()
}
return val
}

98
vendor/github.com/kr/pretty/pretty.go generated vendored Normal file
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@ -0,0 +1,98 @@
// Package pretty provides pretty-printing for Go values. This is
// useful during debugging, to avoid wrapping long output lines in
// the terminal.
//
// It provides a function, Formatter, that can be used with any
// function that accepts a format string. It also provides
// convenience wrappers for functions in packages fmt and log.
package pretty
import (
"fmt"
"io"
"log"
)
// Errorf is a convenience wrapper for fmt.Errorf.
//
// Calling Errorf(f, x, y) is equivalent to
// fmt.Errorf(f, Formatter(x), Formatter(y)).
func Errorf(format string, a ...interface{}) error {
return fmt.Errorf(format, wrap(a, false)...)
}
// Fprintf is a convenience wrapper for fmt.Fprintf.
//
// Calling Fprintf(w, f, x, y) is equivalent to
// fmt.Fprintf(w, f, Formatter(x), Formatter(y)).
func Fprintf(w io.Writer, format string, a ...interface{}) (n int, error error) {
return fmt.Fprintf(w, format, wrap(a, false)...)
}
// Log is a convenience wrapper for log.Printf.
//
// Calling Log(x, y) is equivalent to
// log.Print(Formatter(x), Formatter(y)), but each operand is
// formatted with "%# v".
func Log(a ...interface{}) {
log.Print(wrap(a, true)...)
}
// Logf is a convenience wrapper for log.Printf.
//
// Calling Logf(f, x, y) is equivalent to
// log.Printf(f, Formatter(x), Formatter(y)).
func Logf(format string, a ...interface{}) {
log.Printf(format, wrap(a, false)...)
}
// Logln is a convenience wrapper for log.Printf.
//
// Calling Logln(x, y) is equivalent to
// log.Println(Formatter(x), Formatter(y)), but each operand is
// formatted with "%# v".
func Logln(a ...interface{}) {
log.Println(wrap(a, true)...)
}
// Print pretty-prints its operands and writes to standard output.
//
// Calling Print(x, y) is equivalent to
// fmt.Print(Formatter(x), Formatter(y)), but each operand is
// formatted with "%# v".
func Print(a ...interface{}) (n int, errno error) {
return fmt.Print(wrap(a, true)...)
}
// Printf is a convenience wrapper for fmt.Printf.
//
// Calling Printf(f, x, y) is equivalent to
// fmt.Printf(f, Formatter(x), Formatter(y)).
func Printf(format string, a ...interface{}) (n int, errno error) {
return fmt.Printf(format, wrap(a, false)...)
}
// Println pretty-prints its operands and writes to standard output.
//
// Calling Print(x, y) is equivalent to
// fmt.Println(Formatter(x), Formatter(y)), but each operand is
// formatted with "%# v".
func Println(a ...interface{}) (n int, errno error) {
return fmt.Println(wrap(a, true)...)
}
// Sprintf is a convenience wrapper for fmt.Sprintf.
//
// Calling Sprintf(f, x, y) is equivalent to
// fmt.Sprintf(f, Formatter(x), Formatter(y)).
func Sprintf(format string, a ...interface{}) string {
return fmt.Sprintf(format, wrap(a, false)...)
}
func wrap(a []interface{}, force bool) []interface{} {
w := make([]interface{}, len(a))
for i, x := range a {
w[i] = formatter{x: x, force: force}
}
return w
}

41
vendor/github.com/kr/pretty/zero.go generated vendored Normal file
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@ -0,0 +1,41 @@
package pretty
import (
"reflect"
)
func nonzero(v reflect.Value) bool {
switch v.Kind() {
case reflect.Bool:
return v.Bool()
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return v.Int() != 0
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return v.Uint() != 0
case reflect.Float32, reflect.Float64:
return v.Float() != 0
case reflect.Complex64, reflect.Complex128:
return v.Complex() != complex(0, 0)
case reflect.String:
return v.String() != ""
case reflect.Struct:
for i := 0; i < v.NumField(); i++ {
if nonzero(getField(v, i)) {
return true
}
}
return false
case reflect.Array:
for i := 0; i < v.Len(); i++ {
if nonzero(v.Index(i)) {
return true
}
}
return false
case reflect.Map, reflect.Interface, reflect.Slice, reflect.Ptr, reflect.Chan, reflect.Func:
return !v.IsNil()
case reflect.UnsafePointer:
return v.Pointer() != 0
}
return true
}

3
vendor/github.com/kr/text/doc.go generated vendored Normal file
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@ -0,0 +1,3 @@
// Package text provides rudimentary functions for manipulating text in
// paragraphs.
package text

74
vendor/github.com/kr/text/indent.go generated vendored Normal file
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@ -0,0 +1,74 @@
package text
import (
"io"
)
// Indent inserts prefix at the beginning of each non-empty line of s. The
// end-of-line marker is NL.
func Indent(s, prefix string) string {
return string(IndentBytes([]byte(s), []byte(prefix)))
}
// IndentBytes inserts prefix at the beginning of each non-empty line of b.
// The end-of-line marker is NL.
func IndentBytes(b, prefix []byte) []byte {
var res []byte
bol := true
for _, c := range b {
if bol && c != '\n' {
res = append(res, prefix...)
}
res = append(res, c)
bol = c == '\n'
}
return res
}
// Writer indents each line of its input.
type indentWriter struct {
w io.Writer
bol bool
pre [][]byte
sel int
off int
}
// NewIndentWriter makes a new write filter that indents the input
// lines. Each line is prefixed in order with the corresponding
// element of pre. If there are more lines than elements, the last
// element of pre is repeated for each subsequent line.
func NewIndentWriter(w io.Writer, pre ...[]byte) io.Writer {
return &indentWriter{
w: w,
pre: pre,
bol: true,
}
}
// The only errors returned are from the underlying indentWriter.
func (w *indentWriter) Write(p []byte) (n int, err error) {
for _, c := range p {
if w.bol {
var i int
i, err = w.w.Write(w.pre[w.sel][w.off:])
w.off += i
if err != nil {
return n, err
}
}
_, err = w.w.Write([]byte{c})
if err != nil {
return n, err
}
n++
w.bol = c == '\n'
if w.bol {
w.off = 0
if w.sel < len(w.pre)-1 {
w.sel++
}
}
}
return n, nil
}

86
vendor/github.com/kr/text/wrap.go generated vendored Normal file
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@ -0,0 +1,86 @@
package text
import (
"bytes"
"math"
)
var (
nl = []byte{'\n'}
sp = []byte{' '}
)
const defaultPenalty = 1e5
// Wrap wraps s into a paragraph of lines of length lim, with minimal
// raggedness.
func Wrap(s string, lim int) string {
return string(WrapBytes([]byte(s), lim))
}
// WrapBytes wraps b into a paragraph of lines of length lim, with minimal
// raggedness.
func WrapBytes(b []byte, lim int) []byte {
words := bytes.Split(bytes.Replace(bytes.TrimSpace(b), nl, sp, -1), sp)
var lines [][]byte
for _, line := range WrapWords(words, 1, lim, defaultPenalty) {
lines = append(lines, bytes.Join(line, sp))
}
return bytes.Join(lines, nl)
}
// WrapWords is the low-level line-breaking algorithm, useful if you need more
// control over the details of the text wrapping process. For most uses, either
// Wrap or WrapBytes will be sufficient and more convenient.
//
// WrapWords splits a list of words into lines with minimal "raggedness",
// treating each byte as one unit, accounting for spc units between adjacent
// words on each line, and attempting to limit lines to lim units. Raggedness
// is the total error over all lines, where error is the square of the
// difference of the length of the line and lim. Too-long lines (which only
// happen when a single word is longer than lim units) have pen penalty units
// added to the error.
func WrapWords(words [][]byte, spc, lim, pen int) [][][]byte {
n := len(words)
length := make([][]int, n)
for i := 0; i < n; i++ {
length[i] = make([]int, n)
length[i][i] = len(words[i])
for j := i + 1; j < n; j++ {
length[i][j] = length[i][j-1] + spc + len(words[j])
}
}
nbrk := make([]int, n)
cost := make([]int, n)
for i := range cost {
cost[i] = math.MaxInt32
}
for i := n - 1; i >= 0; i-- {
if length[i][n-1] <= lim || i == n-1 {
cost[i] = 0
nbrk[i] = n
} else {
for j := i + 1; j < n; j++ {
d := lim - length[i][j-1]
c := d*d + cost[j]
if length[i][j-1] > lim {
c += pen // too-long lines get a worse penalty
}
if c < cost[i] {
cost[i] = c
nbrk[i] = j
}
}
}
}
var lines [][][]byte
i := 0
for i < n {
lines = append(lines, words[i:nbrk[i]])
i = nbrk[i]
}
return lines
}

300
vendor/go.uber.org/atomic/atomic.go generated vendored Normal file
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@ -0,0 +1,300 @@
// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package atomic provides simple wrappers around numerics to enforce atomic
// access.
package atomic
import (
"math"
"sync/atomic"
)
// Int32 is an atomic wrapper around an int32.
type Int32 struct{ v int32 }
// NewInt32 creates an Int32.
func NewInt32(i int32) *Int32 {
return &Int32{i}
}
// Load atomically loads the wrapped value.
func (i *Int32) Load() int32 {
return atomic.LoadInt32(&i.v)
}
// Add atomically adds to the wrapped int32 and returns the new value.
func (i *Int32) Add(n int32) int32 {
return atomic.AddInt32(&i.v, n)
}
// Sub atomically subtracts from the wrapped int32 and returns the new value.
func (i *Int32) Sub(n int32) int32 {
return atomic.AddInt32(&i.v, -n)
}
// Inc atomically increments the wrapped int32 and returns the new value.
func (i *Int32) Inc() int32 {
return i.Add(1)
}
// Dec atomically decrements the wrapped int32 and returns the new value.
func (i *Int32) Dec() int32 {
return i.Sub(1)
}
// CAS is an atomic compare-and-swap.
func (i *Int32) CAS(old, new int32) bool {
return atomic.CompareAndSwapInt32(&i.v, old, new)
}
// Store atomically stores the passed value.
func (i *Int32) Store(n int32) {
atomic.StoreInt32(&i.v, n)
}
// Swap atomically swaps the wrapped int32 and returns the old value.
func (i *Int32) Swap(n int32) int32 {
return atomic.SwapInt32(&i.v, n)
}
// Int64 is an atomic wrapper around an int64.
type Int64 struct{ v int64 }
// NewInt64 creates an Int64.
func NewInt64(i int64) *Int64 {
return &Int64{i}
}
// Load atomically loads the wrapped value.
func (i *Int64) Load() int64 {
return atomic.LoadInt64(&i.v)
}
// Add atomically adds to the wrapped int64 and returns the new value.
func (i *Int64) Add(n int64) int64 {
return atomic.AddInt64(&i.v, n)
}
// Sub atomically subtracts from the wrapped int64 and returns the new value.
func (i *Int64) Sub(n int64) int64 {
return atomic.AddInt64(&i.v, -n)
}
// Inc atomically increments the wrapped int64 and returns the new value.
func (i *Int64) Inc() int64 {
return i.Add(1)
}
// Dec atomically decrements the wrapped int64 and returns the new value.
func (i *Int64) Dec() int64 {
return i.Sub(1)
}
// CAS is an atomic compare-and-swap.
func (i *Int64) CAS(old, new int64) bool {
return atomic.CompareAndSwapInt64(&i.v, old, new)
}
// Store atomically stores the passed value.
func (i *Int64) Store(n int64) {
atomic.StoreInt64(&i.v, n)
}
// Swap atomically swaps the wrapped int64 and returns the old value.
func (i *Int64) Swap(n int64) int64 {
return atomic.SwapInt64(&i.v, n)
}
// Uint32 is an atomic wrapper around an uint32.
type Uint32 struct{ v uint32 }
// NewUint32 creates a Uint32.
func NewUint32(i uint32) *Uint32 {
return &Uint32{i}
}
// Load atomically loads the wrapped value.
func (i *Uint32) Load() uint32 {
return atomic.LoadUint32(&i.v)
}
// Add atomically adds to the wrapped uint32 and returns the new value.
func (i *Uint32) Add(n uint32) uint32 {
return atomic.AddUint32(&i.v, n)
}
// Sub atomically subtracts from the wrapped uint32 and returns the new value.
func (i *Uint32) Sub(n uint32) uint32 {
return atomic.AddUint32(&i.v, ^(n - 1))
}
// Inc atomically increments the wrapped uint32 and returns the new value.
func (i *Uint32) Inc() uint32 {
return i.Add(1)
}
// Dec atomically decrements the wrapped int32 and returns the new value.
func (i *Uint32) Dec() uint32 {
return i.Sub(1)
}
// CAS is an atomic compare-and-swap.
func (i *Uint32) CAS(old, new uint32) bool {
return atomic.CompareAndSwapUint32(&i.v, old, new)
}
// Store atomically stores the passed value.
func (i *Uint32) Store(n uint32) {
atomic.StoreUint32(&i.v, n)
}
// Swap atomically swaps the wrapped uint32 and returns the old value.
func (i *Uint32) Swap(n uint32) uint32 {
return atomic.SwapUint32(&i.v, n)
}
// Uint64 is an atomic wrapper around a uint64.
type Uint64 struct{ v uint64 }
// NewUint64 creates a Uint64.
func NewUint64(i uint64) *Uint64 {
return &Uint64{i}
}
// Load atomically loads the wrapped value.
func (i *Uint64) Load() uint64 {
return atomic.LoadUint64(&i.v)
}
// Add atomically adds to the wrapped uint64 and returns the new value.
func (i *Uint64) Add(n uint64) uint64 {
return atomic.AddUint64(&i.v, n)
}
// Sub atomically subtracts from the wrapped uint64 and returns the new value.
func (i *Uint64) Sub(n uint64) uint64 {
return atomic.AddUint64(&i.v, ^(n - 1))
}
// Inc atomically increments the wrapped uint64 and returns the new value.
func (i *Uint64) Inc() uint64 {
return i.Add(1)
}
// Dec atomically decrements the wrapped uint64 and returns the new value.
func (i *Uint64) Dec() uint64 {
return i.Sub(1)
}
// CAS is an atomic compare-and-swap.
func (i *Uint64) CAS(old, new uint64) bool {
return atomic.CompareAndSwapUint64(&i.v, old, new)
}
// Store atomically stores the passed value.
func (i *Uint64) Store(n uint64) {
atomic.StoreUint64(&i.v, n)
}
// Swap atomically swaps the wrapped uint64 and returns the old value.
func (i *Uint64) Swap(n uint64) uint64 {
return atomic.SwapUint64(&i.v, n)
}
// Bool is an atomic Boolean.
type Bool struct{ v uint32 }
// NewBool creates a Bool.
func NewBool(initial bool) *Bool {
return &Bool{boolToInt(initial)}
}
// Load atomically loads the Boolean.
func (b *Bool) Load() bool {
return truthy(atomic.LoadUint32(&b.v))
}
// Store atomically stores the passed value.
func (b *Bool) Store(new bool) {
atomic.StoreUint32(&b.v, boolToInt(new))
}
// Swap sets the given value and returns the previous value.
func (b *Bool) Swap(new bool) bool {
return truthy(atomic.SwapUint32(&b.v, boolToInt(new)))
}
// Toggle atomically negates the Boolean and returns the previous value.
func (b *Bool) Toggle() bool {
return truthy(atomic.AddUint32(&b.v, 1) - 1)
}
func truthy(n uint32) bool {
return n&1 == 1
}
func boolToInt(b bool) uint32 {
if b {
return 1
}
return 0
}
// Float64 is an atomic wrapper around float64.
type Float64 struct {
v uint64
}
// NewFloat64 creates a Float64.
func NewFloat64(f float64) *Float64 {
return &Float64{math.Float64bits(f)}
}
// Load atomically loads the wrapped value.
func (f *Float64) Load() float64 {
return math.Float64frombits(atomic.LoadUint64(&f.v))
}
// Store atomically stores the passed value.
func (f *Float64) Store(s float64) {
atomic.StoreUint64(&f.v, math.Float64bits(s))
}
// Add atomically adds to the wrapped float64 and returns the new value.
func (f *Float64) Add(s float64) float64 {
for {
old := f.Load()
new := old + s
if f.CAS(old, new) {
return new
}
}
}
// Sub atomically subtracts from the wrapped float64 and returns the new value.
func (f *Float64) Sub(s float64) float64 {
return f.Add(-s)
}
// CAS is an atomic compare-and-swap.
func (f *Float64) CAS(old, new float64) bool {
return atomic.CompareAndSwapUint64(&f.v, math.Float64bits(old), math.Float64bits(new))
}

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package atomic
import "sync/atomic"
// String is an atomic type-safe wrapper around atomic.Value for strings.
type String struct{ v atomic.Value }
// NewString creates a String.
func NewString(str string) *String {
s := &String{}
if str != "" {
s.Store(str)
}
return s
}
// Load atomically loads the wrapped string.
func (s *String) Load() string {
v := s.v.Load()
if v == nil {
return ""
}
return v.(string)
}
// Store atomically stores the passed string.
// Note: Converting the string to an interface{} to store in the atomic.Value
// requires an allocation.
func (s *String) Store(str string) {
s.v.Store(str)
}