mirror of
https://github.com/golang/go
synced 2024-11-21 21:44:40 -07:00
fmt: clean up after reflect.Interface change.
Store the reflect.Value in the internal print state. Code is simpler, cleaner, and a little faster - back to what it was before the change. R=golang-dev, iant CC=golang-dev https://golang.org/cl/5299046
This commit is contained in:
Rob Pike
parent
4c56c30b78
commit
811d334a65
@ -74,8 +74,11 @@ type pp struct {
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n int
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panicking bool
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buf bytes.Buffer
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runeBuf [utf8.UTFMax]byte
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fmt fmt
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// value holds the current item, as a reflect.Value, and will be
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// the zero Value if the item has not been reflected.
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value reflect.Value
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runeBuf [utf8.UTFMax]byte
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fmt fmt
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}
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// A cache holds a set of reusable objects.
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@ -129,6 +132,7 @@ func (p *pp) free() {
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return
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}
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p.buf.Reset()
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p.value = reflect.Value{}
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ppFree.put(p)
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}
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@ -290,7 +294,7 @@ func (p *pp) unknownType(v interface{}) {
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p.buf.WriteByte('?')
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}
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func (p *pp) badVerb(verb int, val interface{}, val1 reflect.Value) {
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func (p *pp) badVerb(verb int, val interface{}) {
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p.add('%')
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p.add('!')
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p.add(verb)
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@ -300,22 +304,22 @@ func (p *pp) badVerb(verb int, val interface{}, val1 reflect.Value) {
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p.buf.WriteString(reflect.TypeOf(val).String())
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p.add('=')
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p.printField(val, 'v', false, false, 0)
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case val1.IsValid():
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p.buf.WriteString(val1.Type().String())
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case p.value.IsValid():
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p.buf.WriteString(p.value.Type().String())
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p.add('=')
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p.printValue(val1, 'v', false, false, 0)
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p.printValue(p.value, 'v', false, false, 0)
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default:
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p.buf.Write(nilAngleBytes)
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}
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p.add(')')
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}
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func (p *pp) fmtBool(v bool, verb int, value interface{}, value1 reflect.Value) {
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func (p *pp) fmtBool(v bool, verb int, value interface{}) {
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switch verb {
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case 't', 'v':
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p.fmt.fmt_boolean(v)
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default:
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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}
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@ -329,7 +333,7 @@ func (p *pp) fmtC(c int64) {
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p.fmt.pad(p.runeBuf[0:w])
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}
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func (p *pp) fmtInt64(v int64, verb int, value interface{}, value1 reflect.Value) {
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func (p *pp) fmtInt64(v int64, verb int, value interface{}) {
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switch verb {
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case 'b':
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p.fmt.integer(v, 2, signed, ldigits)
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@ -343,7 +347,7 @@ func (p *pp) fmtInt64(v int64, verb int, value interface{}, value1 reflect.Value
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if 0 <= v && v <= unicode.MaxRune {
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p.fmt.fmt_qc(v)
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} else {
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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case 'x':
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p.fmt.integer(v, 16, signed, ldigits)
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@ -352,7 +356,7 @@ func (p *pp) fmtInt64(v int64, verb int, value interface{}, value1 reflect.Value
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case 'X':
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p.fmt.integer(v, 16, signed, udigits)
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default:
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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}
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@ -387,7 +391,7 @@ func (p *pp) fmtUnicode(v int64) {
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p.fmt.sharp = sharp
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}
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func (p *pp) fmtUint64(v uint64, verb int, goSyntax bool, value interface{}, value1 reflect.Value) {
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func (p *pp) fmtUint64(v uint64, verb int, goSyntax bool, value interface{}) {
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switch verb {
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case 'b':
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p.fmt.integer(int64(v), 2, unsigned, ldigits)
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@ -407,7 +411,7 @@ func (p *pp) fmtUint64(v uint64, verb int, goSyntax bool, value interface{}, val
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if 0 <= v && v <= unicode.MaxRune {
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p.fmt.fmt_qc(int64(v))
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} else {
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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case 'x':
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p.fmt.integer(int64(v), 16, unsigned, ldigits)
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@ -416,11 +420,11 @@ func (p *pp) fmtUint64(v uint64, verb int, goSyntax bool, value interface{}, val
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case 'U':
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p.fmtUnicode(int64(v))
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default:
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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}
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func (p *pp) fmtFloat32(v float32, verb int, value interface{}, value1 reflect.Value) {
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func (p *pp) fmtFloat32(v float32, verb int, value interface{}) {
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switch verb {
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case 'b':
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p.fmt.fmt_fb32(v)
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@ -435,11 +439,11 @@ func (p *pp) fmtFloat32(v float32, verb int, value interface{}, value1 reflect.V
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case 'G':
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p.fmt.fmt_G32(v)
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default:
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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}
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func (p *pp) fmtFloat64(v float64, verb int, value interface{}, value1 reflect.Value) {
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func (p *pp) fmtFloat64(v float64, verb int, value interface{}) {
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switch verb {
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case 'b':
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p.fmt.fmt_fb64(v)
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@ -454,33 +458,33 @@ func (p *pp) fmtFloat64(v float64, verb int, value interface{}, value1 reflect.V
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case 'G':
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p.fmt.fmt_G64(v)
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default:
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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}
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func (p *pp) fmtComplex64(v complex64, verb int, value interface{}, value1 reflect.Value) {
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func (p *pp) fmtComplex64(v complex64, verb int, value interface{}) {
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switch verb {
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case 'e', 'E', 'f', 'F', 'g', 'G':
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p.fmt.fmt_c64(v, verb)
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case 'v':
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p.fmt.fmt_c64(v, 'g')
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default:
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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}
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func (p *pp) fmtComplex128(v complex128, verb int, value interface{}, value1 reflect.Value) {
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func (p *pp) fmtComplex128(v complex128, verb int, value interface{}) {
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switch verb {
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case 'e', 'E', 'f', 'F', 'g', 'G':
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p.fmt.fmt_c128(v, verb)
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case 'v':
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p.fmt.fmt_c128(v, 'g')
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default:
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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}
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func (p *pp) fmtString(v string, verb int, goSyntax bool, value interface{}, value1 reflect.Value) {
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func (p *pp) fmtString(v string, verb int, goSyntax bool, value interface{}) {
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switch verb {
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case 'v':
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if goSyntax {
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@ -497,11 +501,11 @@ func (p *pp) fmtString(v string, verb int, goSyntax bool, value interface{}, val
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case 'q':
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p.fmt.fmt_q(v)
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default:
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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}
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func (p *pp) fmtBytes(v []byte, verb int, goSyntax bool, depth int, value interface{}, value1 reflect.Value) {
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func (p *pp) fmtBytes(v []byte, verb int, goSyntax bool, depth int, value interface{}) {
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if verb == 'v' || verb == 'd' {
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if goSyntax {
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p.buf.Write(bytesBytes)
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@ -536,7 +540,7 @@ func (p *pp) fmtBytes(v []byte, verb int, goSyntax bool, depth int, value interf
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case 'q':
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p.fmt.fmt_q(s)
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default:
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p.badVerb(verb, value, value1)
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p.badVerb(verb, value)
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}
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}
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@ -546,7 +550,7 @@ func (p *pp) fmtPointer(field interface{}, value reflect.Value, verb int, goSynt
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case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.Slice, reflect.UnsafePointer:
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u = value.Pointer()
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default:
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p.badVerb(verb, field, value)
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p.badVerb(verb, field)
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return
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}
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if goSyntax {
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@ -619,7 +623,7 @@ func (p *pp) handleMethods(field interface{}, verb int, plus, goSyntax bool, dep
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handled = true
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defer p.catchPanic(field, verb)
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// Print the result of GoString unadorned.
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p.fmtString(stringer.GoString(), 's', false, field, reflect.Value{})
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p.fmtString(stringer.GoString(), 's', false, field)
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return
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}
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} else {
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@ -641,7 +645,7 @@ func (p *pp) printField(field interface{}, verb int, plus, goSyntax bool, depth
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if verb == 'T' || verb == 'v' {
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p.buf.Write(nilAngleBytes)
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} else {
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p.badVerb(verb, field, reflect.Value{})
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p.badVerb(verb, field)
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}
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return false
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}
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@ -664,58 +668,58 @@ func (p *pp) printField(field interface{}, verb int, plus, goSyntax bool, depth
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// Some types can be done without reflection.
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switch f := field.(type) {
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case bool:
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p.fmtBool(f, verb, field, reflect.Value{})
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p.fmtBool(f, verb, field)
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return false
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case float32:
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p.fmtFloat32(f, verb, field, reflect.Value{})
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p.fmtFloat32(f, verb, field)
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return false
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case float64:
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p.fmtFloat64(f, verb, field, reflect.Value{})
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p.fmtFloat64(f, verb, field)
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return false
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case complex64:
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p.fmtComplex64(complex64(f), verb, field, reflect.Value{})
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p.fmtComplex64(complex64(f), verb, field)
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return false
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case complex128:
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p.fmtComplex128(f, verb, field, reflect.Value{})
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p.fmtComplex128(f, verb, field)
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return false
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case int:
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p.fmtInt64(int64(f), verb, field, reflect.Value{})
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p.fmtInt64(int64(f), verb, field)
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return false
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case int8:
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p.fmtInt64(int64(f), verb, field, reflect.Value{})
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p.fmtInt64(int64(f), verb, field)
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return false
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case int16:
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p.fmtInt64(int64(f), verb, field, reflect.Value{})
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p.fmtInt64(int64(f), verb, field)
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return false
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case int32:
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p.fmtInt64(int64(f), verb, field, reflect.Value{})
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p.fmtInt64(int64(f), verb, field)
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return false
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case int64:
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p.fmtInt64(f, verb, field, reflect.Value{})
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p.fmtInt64(f, verb, field)
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return false
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case uint:
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p.fmtUint64(uint64(f), verb, goSyntax, field, reflect.Value{})
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p.fmtUint64(uint64(f), verb, goSyntax, field)
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return false
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case uint8:
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p.fmtUint64(uint64(f), verb, goSyntax, field, reflect.Value{})
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p.fmtUint64(uint64(f), verb, goSyntax, field)
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return false
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case uint16:
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p.fmtUint64(uint64(f), verb, goSyntax, field, reflect.Value{})
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p.fmtUint64(uint64(f), verb, goSyntax, field)
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return false
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case uint32:
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p.fmtUint64(uint64(f), verb, goSyntax, field, reflect.Value{})
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p.fmtUint64(uint64(f), verb, goSyntax, field)
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return false
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case uint64:
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p.fmtUint64(f, verb, goSyntax, field, reflect.Value{})
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p.fmtUint64(f, verb, goSyntax, field)
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return false
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case uintptr:
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p.fmtUint64(uint64(f), verb, goSyntax, field, reflect.Value{})
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p.fmtUint64(uint64(f), verb, goSyntax, field)
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return false
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case string:
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p.fmtString(f, verb, goSyntax, field, reflect.Value{})
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p.fmtString(f, verb, goSyntax, field)
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return verb == 's' || verb == 'v'
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case []byte:
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p.fmtBytes(f, verb, goSyntax, depth, field, reflect.Value{})
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p.fmtBytes(f, verb, goSyntax, depth, field)
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return verb == 's'
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}
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@ -729,7 +733,7 @@ func (p *pp) printValue(value reflect.Value, verb int, plus, goSyntax bool, dept
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if verb == 'T' || verb == 'v' {
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p.buf.Write(nilAngleBytes)
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} else {
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p.badVerb(verb, nil, value)
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p.badVerb(verb, nil)
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}
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return false
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}
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@ -761,28 +765,30 @@ func (p *pp) printValue(value reflect.Value, verb int, plus, goSyntax bool, dept
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// printReflectValue is the fallback for both printField and printValue.
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// It uses reflect to print the value.
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func (p *pp) printReflectValue(value reflect.Value, verb int, plus, goSyntax bool, depth int) (wasString bool) {
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oldValue := p.value
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p.value = value
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BigSwitch:
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switch f := value; f.Kind() {
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case reflect.Bool:
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p.fmtBool(f.Bool(), verb, nil, value)
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p.fmtBool(f.Bool(), verb, nil)
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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p.fmtInt64(f.Int(), verb, nil, value)
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p.fmtInt64(f.Int(), verb, nil)
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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p.fmtUint64(uint64(f.Uint()), verb, goSyntax, nil, value)
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p.fmtUint64(uint64(f.Uint()), verb, goSyntax, nil)
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case reflect.Float32, reflect.Float64:
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if f.Type().Size() == 4 {
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p.fmtFloat32(float32(f.Float()), verb, nil, value)
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p.fmtFloat32(float32(f.Float()), verb, nil)
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} else {
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p.fmtFloat64(float64(f.Float()), verb, nil, value)
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p.fmtFloat64(float64(f.Float()), verb, nil)
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}
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case reflect.Complex64, reflect.Complex128:
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if f.Type().Size() == 8 {
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p.fmtComplex64(complex64(f.Complex()), verb, nil, value)
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p.fmtComplex64(complex64(f.Complex()), verb, nil)
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} else {
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p.fmtComplex128(complex128(f.Complex()), verb, nil, value)
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p.fmtComplex128(complex128(f.Complex()), verb, nil)
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}
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case reflect.String:
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p.fmtString(f.String(), verb, goSyntax, nil, value)
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p.fmtString(f.String(), verb, goSyntax, nil)
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case reflect.Map:
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if goSyntax {
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p.buf.WriteString(f.Type().String())
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@ -842,7 +848,7 @@ BigSwitch:
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p.buf.Write(nilAngleBytes)
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}
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} else {
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return p.printValue(value, verb, plus, goSyntax, depth+1)
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wasString = p.printValue(value, verb, plus, goSyntax, depth+1)
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}
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case reflect.Array, reflect.Slice:
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// Byte slices are special.
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@ -858,8 +864,9 @@ BigSwitch:
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for i := range bytes {
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bytes[i] = byte(f.Index(i).Uint())
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}
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p.fmtBytes(bytes, verb, goSyntax, depth, nil, value)
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return verb == 's'
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p.fmtBytes(bytes, verb, goSyntax, depth, nil)
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wasString = verb == 's'
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break
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}
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if goSyntax {
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p.buf.WriteString(value.Type().String())
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@ -921,7 +928,8 @@ BigSwitch:
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default:
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p.unknownType(f)
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}
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return false
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p.value = oldValue
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return wasString
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}
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// intFromArg gets the fieldnumth element of a. On return, isInt reports whether the argument has type int.
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