diff options
Diffstat (limited to 'vendor/github.com/kr/pretty/formatter.go')
-rw-r--r-- | vendor/github.com/kr/pretty/formatter.go | 355 |
1 files changed, 0 insertions, 355 deletions
diff --git a/vendor/github.com/kr/pretty/formatter.go b/vendor/github.com/kr/pretty/formatter.go deleted file mode 100644 index 8e6969c59..000000000 --- a/vendor/github.com/kr/pretty/formatter.go +++ /dev/null @@ -1,355 +0,0 @@ -package pretty - -import ( - "fmt" - "io" - "reflect" - "strconv" - "text/tabwriter" - - "github.com/kr/text" - "github.com/rogpeppe/go-internal/fmtsort" -) - -type formatter struct { - v reflect.Value - 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{v: reflect.ValueOf(x), quote: true} -} - -func (fo formatter) String() string { - return fmt.Sprint(fo.v.Interface()) // unwrap it -} - -func (fo formatter) passThrough(f fmt.State, c rune) { - s := "%" - for i := 0; i < 128; i++ { - if f.Flag(i) { - s += string(rune(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.v.Interface()) -} - -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(fo.v, 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) catchPanic(v reflect.Value, method string) { - if r := recover(); r != nil { - if v.Kind() == reflect.Ptr && v.IsNil() { - writeByte(p, '(') - io.WriteString(p, v.Type().String()) - io.WriteString(p, ")(nil)") - return - } - writeByte(p, '(') - io.WriteString(p, v.Type().String()) - io.WriteString(p, ")(PANIC=calling method ") - io.WriteString(p, strconv.Quote(method)) - io.WriteString(p, ": ") - fmt.Fprint(p, r) - writeByte(p, ')') - } -} - -func (p *printer) printValue(v reflect.Value, showType, quote bool) { - if p.depth > 10 { - io.WriteString(p, "!%v(DEPTH EXCEEDED)") - return - } - - if v.IsValid() && v.CanInterface() { - i := v.Interface() - if goStringer, ok := i.(fmt.GoStringer); ok { - defer p.catchPanic(v, "GoString") - io.WriteString(p, goStringer.GoString()) - 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() - } - sm := fmtsort.Sort(v) - for i := 0; i < v.Len(); i++ { - k := sm.Key[i] - mv := sm.Value[i] - 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 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 -} |