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Diffstat (limited to 'gcc-4.8.1/libgo/go/encoding/xml/marshal.go')
-rw-r--r--gcc-4.8.1/libgo/go/encoding/xml/marshal.go466
1 files changed, 0 insertions, 466 deletions
diff --git a/gcc-4.8.1/libgo/go/encoding/xml/marshal.go b/gcc-4.8.1/libgo/go/encoding/xml/marshal.go
deleted file mode 100644
index aacb50c9c..000000000
--- a/gcc-4.8.1/libgo/go/encoding/xml/marshal.go
+++ /dev/null
@@ -1,466 +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 xml
-
-import (
- "bufio"
- "bytes"
- "fmt"
- "io"
- "reflect"
- "strconv"
- "strings"
- "time"
-)
-
-const (
- // A generic XML header suitable for use with the output of Marshal.
- // This is not automatically added to any output of this package,
- // it is provided as a convenience.
- Header = `<?xml version="1.0" encoding="UTF-8"?>` + "\n"
-)
-
-// Marshal returns the XML encoding of v.
-//
-// Marshal handles an array or slice by marshalling each of the elements.
-// Marshal handles a pointer by marshalling the value it points at or, if the
-// pointer is nil, by writing nothing. Marshal handles an interface value by
-// marshalling the value it contains or, if the interface value is nil, by
-// writing nothing. Marshal handles all other data by writing one or more XML
-// elements containing the data.
-//
-// The name for the XML elements is taken from, in order of preference:
-// - the tag on the XMLName field, if the data is a struct
-// - the value of the XMLName field of type xml.Name
-// - the tag of the struct field used to obtain the data
-// - the name of the struct field used to obtain the data
-// - the name of the marshalled type
-//
-// The XML element for a struct contains marshalled elements for each of the
-// exported fields of the struct, with these exceptions:
-// - the XMLName field, described above, is omitted.
-// - a field with tag "-" is omitted.
-// - a field with tag "name,attr" becomes an attribute with
-// the given name in the XML element.
-// - a field with tag ",attr" becomes an attribute with the
-// field name in the XML element.
-// - a field with tag ",chardata" is written as character data,
-// not as an XML element.
-// - a field with tag ",innerxml" is written verbatim, not subject
-// to the usual marshalling procedure.
-// - a field with tag ",comment" is written as an XML comment, not
-// subject to the usual marshalling procedure. It must not contain
-// the "--" string within it.
-// - a field with a tag including the "omitempty" option is omitted
-// if the field value is empty. The empty values are false, 0, any
-// nil pointer or interface value, and any array, slice, map, or
-// string of length zero.
-// - an anonymous struct field is handled as if the fields of its
-// value were part of the outer struct.
-//
-// If a field uses a tag "a>b>c", then the element c will be nested inside
-// parent elements a and b. Fields that appear next to each other that name
-// the same parent will be enclosed in one XML element.
-//
-// See MarshalIndent for an example.
-//
-// Marshal will return an error if asked to marshal a channel, function, or map.
-func Marshal(v interface{}) ([]byte, error) {
- var b bytes.Buffer
- if err := NewEncoder(&b).Encode(v); err != nil {
- return nil, err
- }
- return b.Bytes(), nil
-}
-
-// MarshalIndent works like Marshal, but each XML element begins on a new
-// indented line that starts with prefix and is followed by one or more
-// copies of indent according to the nesting depth.
-func MarshalIndent(v interface{}, prefix, indent string) ([]byte, error) {
- var b bytes.Buffer
- enc := NewEncoder(&b)
- enc.prefix = prefix
- enc.indent = indent
- if err := enc.Encode(v); err != nil {
- return nil, err
- }
- return b.Bytes(), nil
-}
-
-// An Encoder writes XML data to an output stream.
-type Encoder struct {
- printer
-}
-
-// NewEncoder returns a new encoder that writes to w.
-func NewEncoder(w io.Writer) *Encoder {
- return &Encoder{printer{Writer: bufio.NewWriter(w)}}
-}
-
-// Encode writes the XML encoding of v to the stream.
-//
-// See the documentation for Marshal for details about the conversion
-// of Go values to XML.
-func (enc *Encoder) Encode(v interface{}) error {
- err := enc.marshalValue(reflect.ValueOf(v), nil)
- if err != nil {
- return err
- }
- return enc.Flush()
-}
-
-type printer struct {
- *bufio.Writer
- indent string
- prefix string
- depth int
- indentedIn bool
-}
-
-// marshalValue writes one or more XML elements representing val.
-// If val was obtained from a struct field, finfo must have its details.
-func (p *printer) marshalValue(val reflect.Value, finfo *fieldInfo) error {
- if !val.IsValid() {
- return nil
- }
- if finfo != nil && finfo.flags&fOmitEmpty != 0 && isEmptyValue(val) {
- return nil
- }
-
- kind := val.Kind()
- typ := val.Type()
-
- // Drill into pointers/interfaces
- if kind == reflect.Ptr || kind == reflect.Interface {
- if val.IsNil() {
- return nil
- }
- return p.marshalValue(val.Elem(), finfo)
- }
-
- // Slices and arrays iterate over the elements. They do not have an enclosing tag.
- if (kind == reflect.Slice || kind == reflect.Array) && typ.Elem().Kind() != reflect.Uint8 {
- for i, n := 0, val.Len(); i < n; i++ {
- if err := p.marshalValue(val.Index(i), finfo); err != nil {
- return err
- }
- }
- return nil
- }
-
- tinfo, err := getTypeInfo(typ)
- if err != nil {
- return err
- }
-
- // Precedence for the XML element name is:
- // 1. XMLName field in underlying struct;
- // 2. field name/tag in the struct field; and
- // 3. type name
- var xmlns, name string
- if tinfo.xmlname != nil {
- xmlname := tinfo.xmlname
- if xmlname.name != "" {
- xmlns, name = xmlname.xmlns, xmlname.name
- } else if v, ok := xmlname.value(val).Interface().(Name); ok && v.Local != "" {
- xmlns, name = v.Space, v.Local
- }
- }
- if name == "" && finfo != nil {
- xmlns, name = finfo.xmlns, finfo.name
- }
- if name == "" {
- name = typ.Name()
- if name == "" {
- return &UnsupportedTypeError{typ}
- }
- }
-
- p.writeIndent(1)
- p.WriteByte('<')
- p.WriteString(name)
-
- if xmlns != "" {
- p.WriteString(` xmlns="`)
- // TODO: EscapeString, to avoid the allocation.
- Escape(p, []byte(xmlns))
- p.WriteByte('"')
- }
-
- // Attributes
- for i := range tinfo.fields {
- finfo := &tinfo.fields[i]
- if finfo.flags&fAttr == 0 {
- continue
- }
- fv := finfo.value(val)
- if finfo.flags&fOmitEmpty != 0 && isEmptyValue(fv) {
- continue
- }
- p.WriteByte(' ')
- p.WriteString(finfo.name)
- p.WriteString(`="`)
- if err := p.marshalSimple(fv.Type(), fv); err != nil {
- return err
- }
- p.WriteByte('"')
- }
- p.WriteByte('>')
-
- if val.Kind() == reflect.Struct {
- err = p.marshalStruct(tinfo, val)
- } else {
- err = p.marshalSimple(typ, val)
- }
- if err != nil {
- return err
- }
-
- p.writeIndent(-1)
- p.WriteByte('<')
- p.WriteByte('/')
- p.WriteString(name)
- p.WriteByte('>')
-
- return p.cachedWriteError()
-}
-
-var timeType = reflect.TypeOf(time.Time{})
-
-func (p *printer) marshalSimple(typ reflect.Type, val reflect.Value) error {
- // Normally we don't see structs, but this can happen for an attribute.
- if val.Type() == timeType {
- p.WriteString(val.Interface().(time.Time).Format(time.RFC3339Nano))
- return nil
- }
- switch val.Kind() {
- case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
- p.WriteString(strconv.FormatInt(val.Int(), 10))
- case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
- p.WriteString(strconv.FormatUint(val.Uint(), 10))
- case reflect.Float32, reflect.Float64:
- p.WriteString(strconv.FormatFloat(val.Float(), 'g', -1, val.Type().Bits()))
- case reflect.String:
- // TODO: Add EscapeString.
- Escape(p, []byte(val.String()))
- case reflect.Bool:
- p.WriteString(strconv.FormatBool(val.Bool()))
- case reflect.Array:
- // will be [...]byte
- bytes := make([]byte, val.Len())
- for i := range bytes {
- bytes[i] = val.Index(i).Interface().(byte)
- }
- Escape(p, bytes)
- case reflect.Slice:
- // will be []byte
- Escape(p, val.Bytes())
- default:
- return &UnsupportedTypeError{typ}
- }
- return p.cachedWriteError()
-}
-
-var ddBytes = []byte("--")
-
-func (p *printer) marshalStruct(tinfo *typeInfo, val reflect.Value) error {
- if val.Type() == timeType {
- _, err := p.WriteString(val.Interface().(time.Time).Format(time.RFC3339Nano))
- return err
- }
- s := parentStack{printer: p}
- for i := range tinfo.fields {
- finfo := &tinfo.fields[i]
- if finfo.flags&(fAttr) != 0 {
- continue
- }
- vf := finfo.value(val)
- switch finfo.flags & fMode {
- case fCharData:
- var scratch [64]byte
- switch vf.Kind() {
- case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
- Escape(p, strconv.AppendInt(scratch[:0], vf.Int(), 10))
- case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
- Escape(p, strconv.AppendUint(scratch[:0], vf.Uint(), 10))
- case reflect.Float32, reflect.Float64:
- Escape(p, strconv.AppendFloat(scratch[:0], vf.Float(), 'g', -1, vf.Type().Bits()))
- case reflect.Bool:
- Escape(p, strconv.AppendBool(scratch[:0], vf.Bool()))
- case reflect.String:
- Escape(p, []byte(vf.String()))
- case reflect.Slice:
- if elem, ok := vf.Interface().([]byte); ok {
- Escape(p, elem)
- }
- case reflect.Struct:
- if vf.Type() == timeType {
- Escape(p, []byte(vf.Interface().(time.Time).Format(time.RFC3339Nano)))
- }
- }
- continue
-
- case fComment:
- k := vf.Kind()
- if !(k == reflect.String || k == reflect.Slice && vf.Type().Elem().Kind() == reflect.Uint8) {
- return fmt.Errorf("xml: bad type for comment field of %s", val.Type())
- }
- if vf.Len() == 0 {
- continue
- }
- p.writeIndent(0)
- p.WriteString("<!--")
- dashDash := false
- dashLast := false
- switch k {
- case reflect.String:
- s := vf.String()
- dashDash = strings.Index(s, "--") >= 0
- dashLast = s[len(s)-1] == '-'
- if !dashDash {
- p.WriteString(s)
- }
- case reflect.Slice:
- b := vf.Bytes()
- dashDash = bytes.Index(b, ddBytes) >= 0
- dashLast = b[len(b)-1] == '-'
- if !dashDash {
- p.Write(b)
- }
- default:
- panic("can't happen")
- }
- if dashDash {
- return fmt.Errorf(`xml: comments must not contain "--"`)
- }
- if dashLast {
- // "--->" is invalid grammar. Make it "- -->"
- p.WriteByte(' ')
- }
- p.WriteString("-->")
- continue
-
- case fInnerXml:
- iface := vf.Interface()
- switch raw := iface.(type) {
- case []byte:
- p.Write(raw)
- continue
- case string:
- p.WriteString(raw)
- continue
- }
-
- case fElement, fElement | fAny:
- s.trim(finfo.parents)
- if len(finfo.parents) > len(s.stack) {
- if vf.Kind() != reflect.Ptr && vf.Kind() != reflect.Interface || !vf.IsNil() {
- s.push(finfo.parents[len(s.stack):])
- }
- }
- }
- if err := p.marshalValue(vf, finfo); err != nil {
- return err
- }
- }
- s.trim(nil)
- return p.cachedWriteError()
-}
-
-// return the bufio Writer's cached write error
-func (p *printer) cachedWriteError() error {
- _, err := p.Write(nil)
- return err
-}
-
-func (p *printer) writeIndent(depthDelta int) {
- if len(p.prefix) == 0 && len(p.indent) == 0 {
- return
- }
- if depthDelta < 0 {
- p.depth--
- if p.indentedIn {
- p.indentedIn = false
- return
- }
- p.indentedIn = false
- }
- p.WriteByte('\n')
- if len(p.prefix) > 0 {
- p.WriteString(p.prefix)
- }
- if len(p.indent) > 0 {
- for i := 0; i < p.depth; i++ {
- p.WriteString(p.indent)
- }
- }
- if depthDelta > 0 {
- p.depth++
- p.indentedIn = true
- }
-}
-
-type parentStack struct {
- *printer
- stack []string
-}
-
-// trim updates the XML context to match the longest common prefix of the stack
-// and the given parents. A closing tag will be written for every parent
-// popped. Passing a zero slice or nil will close all the elements.
-func (s *parentStack) trim(parents []string) {
- split := 0
- for ; split < len(parents) && split < len(s.stack); split++ {
- if parents[split] != s.stack[split] {
- break
- }
- }
- for i := len(s.stack) - 1; i >= split; i-- {
- s.writeIndent(-1)
- s.WriteString("</")
- s.WriteString(s.stack[i])
- s.WriteByte('>')
- }
- s.stack = parents[:split]
-}
-
-// push adds parent elements to the stack and writes open tags.
-func (s *parentStack) push(parents []string) {
- for i := 0; i < len(parents); i++ {
- s.writeIndent(1)
- s.WriteByte('<')
- s.WriteString(parents[i])
- s.WriteByte('>')
- }
- s.stack = append(s.stack, parents...)
-}
-
-// A MarshalXMLError is returned when Marshal encounters a type
-// that cannot be converted into XML.
-type UnsupportedTypeError struct {
- Type reflect.Type
-}
-
-func (e *UnsupportedTypeError) Error() string {
- return "xml: unsupported type: " + e.Type.String()
-}
-
-func isEmptyValue(v reflect.Value) bool {
- switch v.Kind() {
- case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
- return v.Len() == 0
- 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.Interface, reflect.Ptr:
- return v.IsNil()
- }
- return false
-}
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