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authordependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>2021-02-02 09:18:57 +0000
committerValentin Rothberg <rothberg@redhat.com>2021-02-03 11:00:57 +0100
commitc40cd1be9828c58193f1f4c3b17cab908718be00 (patch)
tree64862067dc4eafce2fc4860347f7eef3971fb407 /vendor/golang.org
parent881f3d788d48b683e674d1f9778d581370c9c11e (diff)
downloadpodman-c40cd1be9828c58193f1f4c3b17cab908718be00.tar.gz
podman-c40cd1be9828c58193f1f4c3b17cab908718be00.tar.bz2
podman-c40cd1be9828c58193f1f4c3b17cab908718be00.zip
Bump github.com/onsi/gomega from 1.10.4 to 1.10.5
Bumps [github.com/onsi/gomega](https://github.com/onsi/gomega) from 1.10.4 to 1.10.5. - [Release notes](https://github.com/onsi/gomega/releases) - [Changelog](https://github.com/onsi/gomega/blob/master/CHANGELOG.md) - [Commits](https://github.com/onsi/gomega/compare/v1.10.4...v1.10.5) Signed-off-by: dependabot-preview[bot] <support@dependabot.com> Signed-off-by: Daniel J Walsh <dwalsh@redhat.com> Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Diffstat (limited to 'vendor/golang.org')
-rw-r--r--vendor/golang.org/x/xerrors/LICENSE27
-rw-r--r--vendor/golang.org/x/xerrors/PATENTS22
-rw-r--r--vendor/golang.org/x/xerrors/README2
-rw-r--r--vendor/golang.org/x/xerrors/adaptor.go193
-rw-r--r--vendor/golang.org/x/xerrors/codereview.cfg1
-rw-r--r--vendor/golang.org/x/xerrors/doc.go22
-rw-r--r--vendor/golang.org/x/xerrors/errors.go33
-rw-r--r--vendor/golang.org/x/xerrors/fmt.go187
-rw-r--r--vendor/golang.org/x/xerrors/format.go34
-rw-r--r--vendor/golang.org/x/xerrors/frame.go56
-rw-r--r--vendor/golang.org/x/xerrors/go.mod3
-rw-r--r--vendor/golang.org/x/xerrors/internal/internal.go8
-rw-r--r--vendor/golang.org/x/xerrors/wrap.go106
13 files changed, 0 insertions, 694 deletions
diff --git a/vendor/golang.org/x/xerrors/LICENSE b/vendor/golang.org/x/xerrors/LICENSE
deleted file mode 100644
index e4a47e17f..000000000
--- a/vendor/golang.org/x/xerrors/LICENSE
+++ /dev/null
@@ -1,27 +0,0 @@
-Copyright (c) 2019 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
- * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
- * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/xerrors/PATENTS b/vendor/golang.org/x/xerrors/PATENTS
deleted file mode 100644
index 733099041..000000000
--- a/vendor/golang.org/x/xerrors/PATENTS
+++ /dev/null
@@ -1,22 +0,0 @@
-Additional IP Rights Grant (Patents)
-
-"This implementation" means the copyrightable works distributed by
-Google as part of the Go project.
-
-Google hereby grants to You a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable (except as stated in this section)
-patent license to make, have made, use, offer to sell, sell, import,
-transfer and otherwise run, modify and propagate the contents of this
-implementation of Go, where such license applies only to those patent
-claims, both currently owned or controlled by Google and acquired in
-the future, licensable by Google that are necessarily infringed by this
-implementation of Go. This grant does not include claims that would be
-infringed only as a consequence of further modification of this
-implementation. If you or your agent or exclusive licensee institute or
-order or agree to the institution of patent litigation against any
-entity (including a cross-claim or counterclaim in a lawsuit) alleging
-that this implementation of Go or any code incorporated within this
-implementation of Go constitutes direct or contributory patent
-infringement, or inducement of patent infringement, then any patent
-rights granted to you under this License for this implementation of Go
-shall terminate as of the date such litigation is filed.
diff --git a/vendor/golang.org/x/xerrors/README b/vendor/golang.org/x/xerrors/README
deleted file mode 100644
index aac7867a5..000000000
--- a/vendor/golang.org/x/xerrors/README
+++ /dev/null
@@ -1,2 +0,0 @@
-This repository holds the transition packages for the new Go 1.13 error values.
-See golang.org/design/29934-error-values.
diff --git a/vendor/golang.org/x/xerrors/adaptor.go b/vendor/golang.org/x/xerrors/adaptor.go
deleted file mode 100644
index 4317f2483..000000000
--- a/vendor/golang.org/x/xerrors/adaptor.go
+++ /dev/null
@@ -1,193 +0,0 @@
-// Copyright 2018 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 xerrors
-
-import (
- "bytes"
- "fmt"
- "io"
- "reflect"
- "strconv"
-)
-
-// FormatError calls the FormatError method of f with an errors.Printer
-// configured according to s and verb, and writes the result to s.
-func FormatError(f Formatter, s fmt.State, verb rune) {
- // Assuming this function is only called from the Format method, and given
- // that FormatError takes precedence over Format, it cannot be called from
- // any package that supports errors.Formatter. It is therefore safe to
- // disregard that State may be a specific printer implementation and use one
- // of our choice instead.
-
- // limitations: does not support printing error as Go struct.
-
- var (
- sep = " " // separator before next error
- p = &state{State: s}
- direct = true
- )
-
- var err error = f
-
- switch verb {
- // Note that this switch must match the preference order
- // for ordinary string printing (%#v before %+v, and so on).
-
- case 'v':
- if s.Flag('#') {
- if stringer, ok := err.(fmt.GoStringer); ok {
- io.WriteString(&p.buf, stringer.GoString())
- goto exit
- }
- // proceed as if it were %v
- } else if s.Flag('+') {
- p.printDetail = true
- sep = "\n - "
- }
- case 's':
- case 'q', 'x', 'X':
- // Use an intermediate buffer in the rare cases that precision,
- // truncation, or one of the alternative verbs (q, x, and X) are
- // specified.
- direct = false
-
- default:
- p.buf.WriteString("%!")
- p.buf.WriteRune(verb)
- p.buf.WriteByte('(')
- switch {
- case err != nil:
- p.buf.WriteString(reflect.TypeOf(f).String())
- default:
- p.buf.WriteString("<nil>")
- }
- p.buf.WriteByte(')')
- io.Copy(s, &p.buf)
- return
- }
-
-loop:
- for {
- switch v := err.(type) {
- case Formatter:
- err = v.FormatError((*printer)(p))
- case fmt.Formatter:
- v.Format(p, 'v')
- break loop
- default:
- io.WriteString(&p.buf, v.Error())
- break loop
- }
- if err == nil {
- break
- }
- if p.needColon || !p.printDetail {
- p.buf.WriteByte(':')
- p.needColon = false
- }
- p.buf.WriteString(sep)
- p.inDetail = false
- p.needNewline = false
- }
-
-exit:
- width, okW := s.Width()
- prec, okP := s.Precision()
-
- if !direct || (okW && width > 0) || okP {
- // Construct format string from State s.
- format := []byte{'%'}
- if s.Flag('-') {
- format = append(format, '-')
- }
- if s.Flag('+') {
- format = append(format, '+')
- }
- if s.Flag(' ') {
- format = append(format, ' ')
- }
- if okW {
- format = strconv.AppendInt(format, int64(width), 10)
- }
- if okP {
- format = append(format, '.')
- format = strconv.AppendInt(format, int64(prec), 10)
- }
- format = append(format, string(verb)...)
- fmt.Fprintf(s, string(format), p.buf.String())
- } else {
- io.Copy(s, &p.buf)
- }
-}
-
-var detailSep = []byte("\n ")
-
-// state tracks error printing state. It implements fmt.State.
-type state struct {
- fmt.State
- buf bytes.Buffer
-
- printDetail bool
- inDetail bool
- needColon bool
- needNewline bool
-}
-
-func (s *state) Write(b []byte) (n int, err error) {
- if s.printDetail {
- if len(b) == 0 {
- return 0, nil
- }
- if s.inDetail && s.needColon {
- s.needNewline = true
- if b[0] == '\n' {
- b = b[1:]
- }
- }
- k := 0
- for i, c := range b {
- if s.needNewline {
- if s.inDetail && s.needColon {
- s.buf.WriteByte(':')
- s.needColon = false
- }
- s.buf.Write(detailSep)
- s.needNewline = false
- }
- if c == '\n' {
- s.buf.Write(b[k:i])
- k = i + 1
- s.needNewline = true
- }
- }
- s.buf.Write(b[k:])
- if !s.inDetail {
- s.needColon = true
- }
- } else if !s.inDetail {
- s.buf.Write(b)
- }
- return len(b), nil
-}
-
-// printer wraps a state to implement an xerrors.Printer.
-type printer state
-
-func (s *printer) Print(args ...interface{}) {
- if !s.inDetail || s.printDetail {
- fmt.Fprint((*state)(s), args...)
- }
-}
-
-func (s *printer) Printf(format string, args ...interface{}) {
- if !s.inDetail || s.printDetail {
- fmt.Fprintf((*state)(s), format, args...)
- }
-}
-
-func (s *printer) Detail() bool {
- s.inDetail = true
- return s.printDetail
-}
diff --git a/vendor/golang.org/x/xerrors/codereview.cfg b/vendor/golang.org/x/xerrors/codereview.cfg
deleted file mode 100644
index 3f8b14b64..000000000
--- a/vendor/golang.org/x/xerrors/codereview.cfg
+++ /dev/null
@@ -1 +0,0 @@
-issuerepo: golang/go
diff --git a/vendor/golang.org/x/xerrors/doc.go b/vendor/golang.org/x/xerrors/doc.go
deleted file mode 100644
index eef99d9d5..000000000
--- a/vendor/golang.org/x/xerrors/doc.go
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2019 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 xerrors implements functions to manipulate errors.
-//
-// This package is based on the Go 2 proposal for error values:
-// https://golang.org/design/29934-error-values
-//
-// These functions were incorporated into the standard library's errors package
-// in Go 1.13:
-// - Is
-// - As
-// - Unwrap
-//
-// Also, Errorf's %w verb was incorporated into fmt.Errorf.
-//
-// Use this package to get equivalent behavior in all supported Go versions.
-//
-// No other features of this package were included in Go 1.13, and at present
-// there are no plans to include any of them.
-package xerrors // import "golang.org/x/xerrors"
diff --git a/vendor/golang.org/x/xerrors/errors.go b/vendor/golang.org/x/xerrors/errors.go
deleted file mode 100644
index e88d3772d..000000000
--- a/vendor/golang.org/x/xerrors/errors.go
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright 2011 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 xerrors
-
-import "fmt"
-
-// errorString is a trivial implementation of error.
-type errorString struct {
- s string
- frame Frame
-}
-
-// New returns an error that formats as the given text.
-//
-// The returned error contains a Frame set to the caller's location and
-// implements Formatter to show this information when printed with details.
-func New(text string) error {
- return &errorString{text, Caller(1)}
-}
-
-func (e *errorString) Error() string {
- return e.s
-}
-
-func (e *errorString) Format(s fmt.State, v rune) { FormatError(e, s, v) }
-
-func (e *errorString) FormatError(p Printer) (next error) {
- p.Print(e.s)
- e.frame.Format(p)
- return nil
-}
diff --git a/vendor/golang.org/x/xerrors/fmt.go b/vendor/golang.org/x/xerrors/fmt.go
deleted file mode 100644
index 829862ddf..000000000
--- a/vendor/golang.org/x/xerrors/fmt.go
+++ /dev/null
@@ -1,187 +0,0 @@
-// Copyright 2018 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 xerrors
-
-import (
- "fmt"
- "strings"
- "unicode"
- "unicode/utf8"
-
- "golang.org/x/xerrors/internal"
-)
-
-const percentBangString = "%!"
-
-// Errorf formats according to a format specifier and returns the string as a
-// value that satisfies error.
-//
-// The returned error includes the file and line number of the caller when
-// formatted with additional detail enabled. If the last argument is an error
-// the returned error's Format method will return it if the format string ends
-// with ": %s", ": %v", or ": %w". If the last argument is an error and the
-// format string ends with ": %w", the returned error implements an Unwrap
-// method returning it.
-//
-// If the format specifier includes a %w verb with an error operand in a
-// position other than at the end, the returned error will still implement an
-// Unwrap method returning the operand, but the error's Format method will not
-// return the wrapped error.
-//
-// It is invalid to include more than one %w verb or to supply it with an
-// operand that does not implement the error interface. The %w verb is otherwise
-// a synonym for %v.
-func Errorf(format string, a ...interface{}) error {
- format = formatPlusW(format)
- // Support a ": %[wsv]" suffix, which works well with xerrors.Formatter.
- wrap := strings.HasSuffix(format, ": %w")
- idx, format2, ok := parsePercentW(format)
- percentWElsewhere := !wrap && idx >= 0
- if !percentWElsewhere && (wrap || strings.HasSuffix(format, ": %s") || strings.HasSuffix(format, ": %v")) {
- err := errorAt(a, len(a)-1)
- if err == nil {
- return &noWrapError{fmt.Sprintf(format, a...), nil, Caller(1)}
- }
- // TODO: this is not entirely correct. The error value could be
- // printed elsewhere in format if it mixes numbered with unnumbered
- // substitutions. With relatively small changes to doPrintf we can
- // have it optionally ignore extra arguments and pass the argument
- // list in its entirety.
- msg := fmt.Sprintf(format[:len(format)-len(": %s")], a[:len(a)-1]...)
- frame := Frame{}
- if internal.EnableTrace {
- frame = Caller(1)
- }
- if wrap {
- return &wrapError{msg, err, frame}
- }
- return &noWrapError{msg, err, frame}
- }
- // Support %w anywhere.
- // TODO: don't repeat the wrapped error's message when %w occurs in the middle.
- msg := fmt.Sprintf(format2, a...)
- if idx < 0 {
- return &noWrapError{msg, nil, Caller(1)}
- }
- err := errorAt(a, idx)
- if !ok || err == nil {
- // Too many %ws or argument of %w is not an error. Approximate the Go
- // 1.13 fmt.Errorf message.
- return &noWrapError{fmt.Sprintf("%sw(%s)", percentBangString, msg), nil, Caller(1)}
- }
- frame := Frame{}
- if internal.EnableTrace {
- frame = Caller(1)
- }
- return &wrapError{msg, err, frame}
-}
-
-func errorAt(args []interface{}, i int) error {
- if i < 0 || i >= len(args) {
- return nil
- }
- err, ok := args[i].(error)
- if !ok {
- return nil
- }
- return err
-}
-
-// formatPlusW is used to avoid the vet check that will barf at %w.
-func formatPlusW(s string) string {
- return s
-}
-
-// Return the index of the only %w in format, or -1 if none.
-// Also return a rewritten format string with %w replaced by %v, and
-// false if there is more than one %w.
-// TODO: handle "%[N]w".
-func parsePercentW(format string) (idx int, newFormat string, ok bool) {
- // Loosely copied from golang.org/x/tools/go/analysis/passes/printf/printf.go.
- idx = -1
- ok = true
- n := 0
- sz := 0
- var isW bool
- for i := 0; i < len(format); i += sz {
- if format[i] != '%' {
- sz = 1
- continue
- }
- // "%%" is not a format directive.
- if i+1 < len(format) && format[i+1] == '%' {
- sz = 2
- continue
- }
- sz, isW = parsePrintfVerb(format[i:])
- if isW {
- if idx >= 0 {
- ok = false
- } else {
- idx = n
- }
- // "Replace" the last character, the 'w', with a 'v'.
- p := i + sz - 1
- format = format[:p] + "v" + format[p+1:]
- }
- n++
- }
- return idx, format, ok
-}
-
-// Parse the printf verb starting with a % at s[0].
-// Return how many bytes it occupies and whether the verb is 'w'.
-func parsePrintfVerb(s string) (int, bool) {
- // Assume only that the directive is a sequence of non-letters followed by a single letter.
- sz := 0
- var r rune
- for i := 1; i < len(s); i += sz {
- r, sz = utf8.DecodeRuneInString(s[i:])
- if unicode.IsLetter(r) {
- return i + sz, r == 'w'
- }
- }
- return len(s), false
-}
-
-type noWrapError struct {
- msg string
- err error
- frame Frame
-}
-
-func (e *noWrapError) Error() string {
- return fmt.Sprint(e)
-}
-
-func (e *noWrapError) Format(s fmt.State, v rune) { FormatError(e, s, v) }
-
-func (e *noWrapError) FormatError(p Printer) (next error) {
- p.Print(e.msg)
- e.frame.Format(p)
- return e.err
-}
-
-type wrapError struct {
- msg string
- err error
- frame Frame
-}
-
-func (e *wrapError) Error() string {
- return fmt.Sprint(e)
-}
-
-func (e *wrapError) Format(s fmt.State, v rune) { FormatError(e, s, v) }
-
-func (e *wrapError) FormatError(p Printer) (next error) {
- p.Print(e.msg)
- e.frame.Format(p)
- return e.err
-}
-
-func (e *wrapError) Unwrap() error {
- return e.err
-}
diff --git a/vendor/golang.org/x/xerrors/format.go b/vendor/golang.org/x/xerrors/format.go
deleted file mode 100644
index 1bc9c26b9..000000000
--- a/vendor/golang.org/x/xerrors/format.go
+++ /dev/null
@@ -1,34 +0,0 @@
-// Copyright 2018 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 xerrors
-
-// A Formatter formats error messages.
-type Formatter interface {
- error
-
- // FormatError prints the receiver's first error and returns the next error in
- // the error chain, if any.
- FormatError(p Printer) (next error)
-}
-
-// A Printer formats error messages.
-//
-// The most common implementation of Printer is the one provided by package fmt
-// during Printf (as of Go 1.13). Localization packages such as golang.org/x/text/message
-// typically provide their own implementations.
-type Printer interface {
- // Print appends args to the message output.
- Print(args ...interface{})
-
- // Printf writes a formatted string.
- Printf(format string, args ...interface{})
-
- // Detail reports whether error detail is requested.
- // After the first call to Detail, all text written to the Printer
- // is formatted as additional detail, or ignored when
- // detail has not been requested.
- // If Detail returns false, the caller can avoid printing the detail at all.
- Detail() bool
-}
diff --git a/vendor/golang.org/x/xerrors/frame.go b/vendor/golang.org/x/xerrors/frame.go
deleted file mode 100644
index 0de628ec5..000000000
--- a/vendor/golang.org/x/xerrors/frame.go
+++ /dev/null
@@ -1,56 +0,0 @@
-// Copyright 2018 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 xerrors
-
-import (
- "runtime"
-)
-
-// A Frame contains part of a call stack.
-type Frame struct {
- // Make room for three PCs: the one we were asked for, what it called,
- // and possibly a PC for skipPleaseUseCallersFrames. See:
- // https://go.googlesource.com/go/+/032678e0fb/src/runtime/extern.go#169
- frames [3]uintptr
-}
-
-// Caller returns a Frame that describes a frame on the caller's stack.
-// The argument skip is the number of frames to skip over.
-// Caller(0) returns the frame for the caller of Caller.
-func Caller(skip int) Frame {
- var s Frame
- runtime.Callers(skip+1, s.frames[:])
- return s
-}
-
-// location reports the file, line, and function of a frame.
-//
-// The returned function may be "" even if file and line are not.
-func (f Frame) location() (function, file string, line int) {
- frames := runtime.CallersFrames(f.frames[:])
- if _, ok := frames.Next(); !ok {
- return "", "", 0
- }
- fr, ok := frames.Next()
- if !ok {
- return "", "", 0
- }
- return fr.Function, fr.File, fr.Line
-}
-
-// Format prints the stack as error detail.
-// It should be called from an error's Format implementation
-// after printing any other error detail.
-func (f Frame) Format(p Printer) {
- if p.Detail() {
- function, file, line := f.location()
- if function != "" {
- p.Printf("%s\n ", function)
- }
- if file != "" {
- p.Printf("%s:%d\n", file, line)
- }
- }
-}
diff --git a/vendor/golang.org/x/xerrors/go.mod b/vendor/golang.org/x/xerrors/go.mod
deleted file mode 100644
index 870d4f612..000000000
--- a/vendor/golang.org/x/xerrors/go.mod
+++ /dev/null
@@ -1,3 +0,0 @@
-module golang.org/x/xerrors
-
-go 1.11
diff --git a/vendor/golang.org/x/xerrors/internal/internal.go b/vendor/golang.org/x/xerrors/internal/internal.go
deleted file mode 100644
index 89f4eca5d..000000000
--- a/vendor/golang.org/x/xerrors/internal/internal.go
+++ /dev/null
@@ -1,8 +0,0 @@
-// Copyright 2018 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 internal
-
-// EnableTrace indicates whether stack information should be recorded in errors.
-var EnableTrace = true
diff --git a/vendor/golang.org/x/xerrors/wrap.go b/vendor/golang.org/x/xerrors/wrap.go
deleted file mode 100644
index 9a3b51037..000000000
--- a/vendor/golang.org/x/xerrors/wrap.go
+++ /dev/null
@@ -1,106 +0,0 @@
-// Copyright 2018 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 xerrors
-
-import (
- "reflect"
-)
-
-// A Wrapper provides context around another error.
-type Wrapper interface {
- // Unwrap returns the next error in the error chain.
- // If there is no next error, Unwrap returns nil.
- Unwrap() error
-}
-
-// Opaque returns an error with the same error formatting as err
-// but that does not match err and cannot be unwrapped.
-func Opaque(err error) error {
- return noWrapper{err}
-}
-
-type noWrapper struct {
- error
-}
-
-func (e noWrapper) FormatError(p Printer) (next error) {
- if f, ok := e.error.(Formatter); ok {
- return f.FormatError(p)
- }
- p.Print(e.error)
- return nil
-}
-
-// Unwrap returns the result of calling the Unwrap method on err, if err implements
-// Unwrap. Otherwise, Unwrap returns nil.
-func Unwrap(err error) error {
- u, ok := err.(Wrapper)
- if !ok {
- return nil
- }
- return u.Unwrap()
-}
-
-// Is reports whether any error in err's chain matches target.
-//
-// An error is considered to match a target if it is equal to that target or if
-// it implements a method Is(error) bool such that Is(target) returns true.
-func Is(err, target error) bool {
- if target == nil {
- return err == target
- }
-
- isComparable := reflect.TypeOf(target).Comparable()
- for {
- if isComparable && err == target {
- return true
- }
- if x, ok := err.(interface{ Is(error) bool }); ok && x.Is(target) {
- return true
- }
- // TODO: consider supporing target.Is(err). This would allow
- // user-definable predicates, but also may allow for coping with sloppy
- // APIs, thereby making it easier to get away with them.
- if err = Unwrap(err); err == nil {
- return false
- }
- }
-}
-
-// As finds the first error in err's chain that matches the type to which target
-// points, and if so, sets the target to its value and returns true. An error
-// matches a type if it is assignable to the target type, or if it has a method
-// As(interface{}) bool such that As(target) returns true. As will panic if target
-// is not a non-nil pointer to a type which implements error or is of interface type.
-//
-// The As method should set the target to its value and return true if err
-// matches the type to which target points.
-func As(err error, target interface{}) bool {
- if target == nil {
- panic("errors: target cannot be nil")
- }
- val := reflect.ValueOf(target)
- typ := val.Type()
- if typ.Kind() != reflect.Ptr || val.IsNil() {
- panic("errors: target must be a non-nil pointer")
- }
- if e := typ.Elem(); e.Kind() != reflect.Interface && !e.Implements(errorType) {
- panic("errors: *target must be interface or implement error")
- }
- targetType := typ.Elem()
- for err != nil {
- if reflect.TypeOf(err).AssignableTo(targetType) {
- val.Elem().Set(reflect.ValueOf(err))
- return true
- }
- if x, ok := err.(interface{ As(interface{}) bool }); ok && x.As(target) {
- return true
- }
- err = Unwrap(err)
- }
- return false
-}
-
-var errorType = reflect.TypeOf((*error)(nil)).Elem()