mirror of https://github.com/docker/cli.git
bump github.com/davecgh/go-spew v1.1.1
full diff: https://github.com/davecgh/go-spew/compare/v1.1.0...v1.1.1 - davecgh/go-spew#79 simpler, more robust bypass Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn
parent
6a562c9b33
commit
ba8388f052
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@ -10,7 +10,7 @@ github.com/containerd/fifo a9fb20d87448d386e6d50b1f2e1f
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github.com/containerd/typeurl 2a93cfde8c20b23de8eb84a5adbc234ddf7a9e8d
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github.com/coreos/etcd fca8add78a9d926166eb739b8e4a124434025ba3 # v3.3.9
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github.com/cpuguy83/go-md2man 20f5889cbdc3c73dbd2862796665e7c465ade7d1 # v1.0.8
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github.com/davecgh/go-spew 346938d642f2ec3594ed81d874461961cd0faa76 # v1.1.0
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github.com/davecgh/go-spew 8991bc29aa16c548c550c7ff78260e27b9ab7c73 # v1.1.1
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github.com/dgrijalva/jwt-go a2c85815a77d0f951e33ba4db5ae93629a1530af
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github.com/docker/compose-on-kubernetes 7a68f5c914c7e06d7a08dc71608f41811c91f0bc # v0.4.21
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github.com/docker/distribution 0d3efadf0154c2b8a4e7b6621fff9809655cc580
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@ -2,7 +2,7 @@ ISC License
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Copyright (c) 2012-2016 Dave Collins <dave@davec.name>
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Permission to use, copy, modify, and distribute this software for any
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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@ -1,12 +1,9 @@
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go-spew
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=======
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[]
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(https://travis-ci.org/davecgh/go-spew) [![ISC License]
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(http://img.shields.io/badge/license-ISC-blue.svg)](http://copyfree.org) [![Coverage Status]
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(https://img.shields.io/coveralls/davecgh/go-spew.svg)]
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(https://coveralls.io/r/davecgh/go-spew?branch=master)
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[](https://travis-ci.org/davecgh/go-spew)
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[](http://copyfree.org)
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[](https://coveralls.io/r/davecgh/go-spew?branch=master)
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Go-spew implements a deep pretty printer for Go data structures to aid in
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debugging. A comprehensive suite of tests with 100% test coverage is provided
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@ -21,8 +18,7 @@ post about it
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## Documentation
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[]
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(http://godoc.org/github.com/davecgh/go-spew/spew)
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[](http://godoc.org/github.com/davecgh/go-spew/spew)
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Full `go doc` style documentation for the project can be viewed online without
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installing this package by using the excellent GoDoc site here:
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@ -16,7 +16,9 @@
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// when the code is not running on Google App Engine, compiled by GopherJS, and
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// "-tags safe" is not added to the go build command line. The "disableunsafe"
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// tag is deprecated and thus should not be used.
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// +build !js,!appengine,!safe,!disableunsafe
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// Go versions prior to 1.4 are disabled because they use a different layout
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// for interfaces which make the implementation of unsafeReflectValue more complex.
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// +build !js,!appengine,!safe,!disableunsafe,go1.4
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package spew
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@ -34,80 +36,49 @@ const (
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ptrSize = unsafe.Sizeof((*byte)(nil))
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)
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var (
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// offsetPtr, offsetScalar, and offsetFlag are the offsets for the
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// internal reflect.Value fields. These values are valid before golang
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// commit ecccf07e7f9d which changed the format. The are also valid
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// after commit 82f48826c6c7 which changed the format again to mirror
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// the original format. Code in the init function updates these offsets
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// as necessary.
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offsetPtr = uintptr(ptrSize)
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offsetScalar = uintptr(0)
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offsetFlag = uintptr(ptrSize * 2)
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type flag uintptr
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// flagKindWidth and flagKindShift indicate various bits that the
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// reflect package uses internally to track kind information.
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//
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// flagRO indicates whether or not the value field of a reflect.Value is
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// read-only.
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//
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// flagIndir indicates whether the value field of a reflect.Value is
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// the actual data or a pointer to the data.
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//
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// These values are valid before golang commit 90a7c3c86944 which
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// changed their positions. Code in the init function updates these
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// flags as necessary.
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flagKindWidth = uintptr(5)
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flagKindShift = uintptr(flagKindWidth - 1)
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flagRO = uintptr(1 << 0)
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flagIndir = uintptr(1 << 1)
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var (
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// flagRO indicates whether the value field of a reflect.Value
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// is read-only.
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flagRO flag
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// flagAddr indicates whether the address of the reflect.Value's
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// value may be taken.
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flagAddr flag
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)
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func init() {
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// Older versions of reflect.Value stored small integers directly in the
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// ptr field (which is named val in the older versions). Versions
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// between commits ecccf07e7f9d and 82f48826c6c7 added a new field named
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// scalar for this purpose which unfortunately came before the flag
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// field, so the offset of the flag field is different for those
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// versions.
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//
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// This code constructs a new reflect.Value from a known small integer
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// and checks if the size of the reflect.Value struct indicates it has
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// the scalar field. When it does, the offsets are updated accordingly.
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vv := reflect.ValueOf(0xf00)
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if unsafe.Sizeof(vv) == (ptrSize * 4) {
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offsetScalar = ptrSize * 2
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offsetFlag = ptrSize * 3
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}
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// flagKindMask holds the bits that make up the kind
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// part of the flags field. In all the supported versions,
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// it is in the lower 5 bits.
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const flagKindMask = flag(0x1f)
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// Commit 90a7c3c86944 changed the flag positions such that the low
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// order bits are the kind. This code extracts the kind from the flags
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// field and ensures it's the correct type. When it's not, the flag
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// order has been changed to the newer format, so the flags are updated
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// accordingly.
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upf := unsafe.Pointer(uintptr(unsafe.Pointer(&vv)) + offsetFlag)
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upfv := *(*uintptr)(upf)
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flagKindMask := uintptr((1<<flagKindWidth - 1) << flagKindShift)
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if (upfv&flagKindMask)>>flagKindShift != uintptr(reflect.Int) {
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flagKindShift = 0
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flagRO = 1 << 5
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flagIndir = 1 << 6
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// Different versions of Go have used different
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// bit layouts for the flags type. This table
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// records the known combinations.
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var okFlags = []struct {
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ro, addr flag
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}{{
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// From Go 1.4 to 1.5
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ro: 1 << 5,
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addr: 1 << 7,
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}, {
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// Up to Go tip.
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ro: 1<<5 | 1<<6,
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addr: 1 << 8,
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}}
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// Commit adf9b30e5594 modified the flags to separate the
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// flagRO flag into two bits which specifies whether or not the
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// field is embedded. This causes flagIndir to move over a bit
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// and means that flagRO is the combination of either of the
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// original flagRO bit and the new bit.
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//
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// This code detects the change by extracting what used to be
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// the indirect bit to ensure it's set. When it's not, the flag
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// order has been changed to the newer format, so the flags are
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// updated accordingly.
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if upfv&flagIndir == 0 {
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flagRO = 3 << 5
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flagIndir = 1 << 7
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}
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var flagValOffset = func() uintptr {
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field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
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if !ok {
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panic("reflect.Value has no flag field")
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}
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return field.Offset
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}()
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// flagField returns a pointer to the flag field of a reflect.Value.
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func flagField(v *reflect.Value) *flag {
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return (*flag)(unsafe.Pointer(uintptr(unsafe.Pointer(v)) + flagValOffset))
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}
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// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
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// This allows us to check for implementations of the Stringer and error
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// interfaces to be used for pretty printing ordinarily unaddressable and
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// inaccessible values such as unexported struct fields.
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func unsafeReflectValue(v reflect.Value) (rv reflect.Value) {
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indirects := 1
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vt := v.Type()
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upv := unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetPtr)
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rvf := *(*uintptr)(unsafe.Pointer(uintptr(unsafe.Pointer(&v)) + offsetFlag))
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if rvf&flagIndir != 0 {
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vt = reflect.PtrTo(v.Type())
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indirects++
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} else if offsetScalar != 0 {
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// The value is in the scalar field when it's not one of the
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// reference types.
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switch vt.Kind() {
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case reflect.Uintptr:
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case reflect.Chan:
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case reflect.Func:
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case reflect.Map:
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case reflect.Ptr:
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case reflect.UnsafePointer:
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default:
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upv = unsafe.Pointer(uintptr(unsafe.Pointer(&v)) +
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offsetScalar)
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func unsafeReflectValue(v reflect.Value) reflect.Value {
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if !v.IsValid() || (v.CanInterface() && v.CanAddr()) {
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return v
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}
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flagFieldPtr := flagField(&v)
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*flagFieldPtr &^= flagRO
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*flagFieldPtr |= flagAddr
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return v
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}
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// Sanity checks against future reflect package changes
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// to the type or semantics of the Value.flag field.
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func init() {
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field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
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if !ok {
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panic("reflect.Value has no flag field")
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}
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if field.Type.Kind() != reflect.TypeOf(flag(0)).Kind() {
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panic("reflect.Value flag field has changed kind")
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}
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type t0 int
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var t struct {
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A t0
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// t0 will have flagEmbedRO set.
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t0
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// a will have flagStickyRO set
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a t0
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}
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vA := reflect.ValueOf(t).FieldByName("A")
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va := reflect.ValueOf(t).FieldByName("a")
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vt0 := reflect.ValueOf(t).FieldByName("t0")
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// Infer flagRO from the difference between the flags
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// for the (otherwise identical) fields in t.
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flagPublic := *flagField(&vA)
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flagWithRO := *flagField(&va) | *flagField(&vt0)
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flagRO = flagPublic ^ flagWithRO
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// Infer flagAddr from the difference between a value
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// taken from a pointer and not.
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vPtrA := reflect.ValueOf(&t).Elem().FieldByName("A")
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flagNoPtr := *flagField(&vA)
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flagPtr := *flagField(&vPtrA)
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flagAddr = flagNoPtr ^ flagPtr
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// Check that the inferred flags tally with one of the known versions.
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for _, f := range okFlags {
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if flagRO == f.ro && flagAddr == f.addr {
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return
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}
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}
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pv := reflect.NewAt(vt, upv)
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rv = pv
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for i := 0; i < indirects; i++ {
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rv = rv.Elem()
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}
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return rv
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panic("reflect.Value read-only flag has changed semantics")
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}
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@ -16,7 +16,7 @@
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// when the code is running on Google App Engine, compiled by GopherJS, or
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// "-tags safe" is added to the go build command line. The "disableunsafe"
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// tag is deprecated and thus should not be used.
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// +build js appengine safe disableunsafe
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// +build js appengine safe disableunsafe !go1.4
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package spew
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@ -180,7 +180,7 @@ func printComplex(w io.Writer, c complex128, floatPrecision int) {
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w.Write(closeParenBytes)
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}
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// printHexPtr outputs a uintptr formatted as hexidecimal with a leading '0x'
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// printHexPtr outputs a uintptr formatted as hexadecimal with a leading '0x'
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// prefix to Writer w.
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func printHexPtr(w io.Writer, p uintptr) {
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// Null pointer.
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@ -35,16 +35,16 @@ var (
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// cCharRE is a regular expression that matches a cgo char.
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// It is used to detect character arrays to hexdump them.
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cCharRE = regexp.MustCompile("^.*\\._Ctype_char$")
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cCharRE = regexp.MustCompile(`^.*\._Ctype_char$`)
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// cUnsignedCharRE is a regular expression that matches a cgo unsigned
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// char. It is used to detect unsigned character arrays to hexdump
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// them.
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cUnsignedCharRE = regexp.MustCompile("^.*\\._Ctype_unsignedchar$")
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cUnsignedCharRE = regexp.MustCompile(`^.*\._Ctype_unsignedchar$`)
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// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
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// It is used to detect uint8_t arrays to hexdump them.
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cUint8tCharRE = regexp.MustCompile("^.*\\._Ctype_uint8_t$")
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cUint8tCharRE = regexp.MustCompile(`^.*\._Ctype_uint8_t$`)
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)
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// dumpState contains information about the state of a dump operation.
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@ -143,10 +143,10 @@ func (d *dumpState) dumpPtr(v reflect.Value) {
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// Display dereferenced value.
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d.w.Write(openParenBytes)
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switch {
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case nilFound == true:
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case nilFound:
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d.w.Write(nilAngleBytes)
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case cycleFound == true:
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case cycleFound:
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d.w.Write(circularBytes)
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default:
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@ -182,10 +182,10 @@ func (f *formatState) formatPtr(v reflect.Value) {
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// Display dereferenced value.
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switch {
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case nilFound == true:
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case nilFound:
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f.fs.Write(nilAngleBytes)
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case cycleFound == true:
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case cycleFound:
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f.fs.Write(circularShortBytes)
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default:
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Loading…
Reference in New Issue