Exemple #1
0
func (d *decoder) mapCopy(src reflect.Value, dst reflect.Value) error {
	sv := src.MapKeys()
	dt := dst.Type().Elem()

	for i := range sv {
		ot := reflect.New(dt)

		if dt.Kind() == reflect.Ptr {
			ot = reflect.New(ot.Type().Elem())
		}

		d.pushPath(sv[i].String())
		err := d.decode(src.MapIndex(sv[i]), ot)
		if err != nil && err != ErrIncompatStruct {
			err = errors.New(d.pathString() + err.Error())
			d.path = nil
			return err
		}
		d.popPath()

		if err == nil {
			dst.SetMapIndex(sv[i], ot.Elem())
		}
	}
	return nil
}
Exemple #2
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// ReadTargets reads targets into map entries.
func (n *MapNode) ReadTargets(c ReadContext, val Val) error {
	list := c.List()
	for _, keyStr := range list {
		keyVal := reflect.New(n.KeyType).Elem()
		if err := n.UnmarshalKey(keyStr, keyVal); err != nil {
			return errors.Wrapf(err, "unmarshaling key")
		}
		elem := *n.ElemNode
		elemContext := c.Push(keyStr)
		elemVal := elem.NewKeyedVal(keyVal)
		err := elem.Read(elemContext, elemVal)
		// Set key field.
		if n.Field != nil && n.Field.KeyField != "" {
			n.Field.SetKeyFunc.Call([]reflect.Value{elemVal.Ptr, elemVal.Key})
		}
		if err != nil {
			return errors.Wrapf(err, "reading child %s", keyStr)
		}
		// TODO: Don't calculate these values every time.
		if reflect.DeepEqual(elemVal.Ptr.Elem().Interface(), reflect.New(elemVal.Ptr.Type().Elem()).Elem().Interface()) {
			nv := reflect.New(elemVal.Ptr.Type()).Elem()
			val.Ptr.Elem().SetMapIndex(elemVal.Key, nv)
		} else {
			val.Ptr.Elem().SetMapIndex(elemVal.Key, elemVal.Final())
		}
	}
	return nil
}
Exemple #3
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func (s *S) TestUnmarshal(c *C) {
	for i, item := range unmarshalTests {
		t := reflect.ValueOf(item.value).Type()
		var value interface{}
		switch t.Kind() {
		case reflect.Map:
			value = reflect.MakeMap(t).Interface()
		case reflect.String:
			t := reflect.ValueOf(item.value).Type()
			v := reflect.New(t)
			value = v.Interface()
		default:
			pt := reflect.ValueOf(item.value).Type()
			pv := reflect.New(pt.Elem())
			value = pv.Interface()
		}
		err := goyaml.Unmarshal([]byte(item.data), value)
		c.Assert(err, IsNil, Commentf("Item #%d", i))
		if t.Kind() == reflect.String {
			c.Assert(*value.(*string), Equals, item.value, Commentf("Item #%d", i))
		} else {
			c.Assert(value, DeepEquals, item.value, Commentf("Item #%d", i))
		}
	}
}
Exemple #4
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// Init initializes the container runtime given a JSON configuration that
// conforms to the Config set type.
func (c *CRT) Init(configStr string) error {
	cfg := &Config{}
	err := json.Unmarshal([]byte(configStr), cfg)
	if err != nil {
		return err
	}

	if _, ok := containerIfRegistry[cfg.CRT.Type]; !ok {
		return core.Errorf("unregistered container run time")
	}

	crtConfigType := containerIfRegistry[cfg.CRT.Type].ConfigType
	crtConfig := reflect.New(crtConfigType).Interface()
	err = json.Unmarshal([]byte(configStr), crtConfig)
	if err != nil {
		return err
	}

	crtType := containerIfRegistry[cfg.CRT.Type].CRTType
	crtif := reflect.New(crtType).Interface()
	c.ContainerIf = crtif.(crtclient.ContainerIf)
	err = c.ContainerIf.Init(&core.Config{V: crtConfig})
	if err != nil {
		return err
	}

	return nil
}
Exemple #5
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// mapEncodeScratch returns a new reflect.Value matching the map's value type,
// and a structPointer suitable for passing to an encoder or sizer.
func mapEncodeScratch(mapType reflect.Type) (keycopy, valcopy reflect.Value, keybase, valbase structPointer) {
	// Prepare addressable doubly-indirect placeholders for the key and value types.
	// This is needed because the element-type encoders expect **T, but the map iteration produces T.

	keycopy = reflect.New(mapType.Key()).Elem()                 // addressable K
	keyptr := reflect.New(reflect.PtrTo(keycopy.Type())).Elem() // addressable *K
	keyptr.Set(keycopy.Addr())                                  //
	keybase = toStructPointer(keyptr.Addr())                    // **K

	// Value types are more varied and require special handling.
	switch mapType.Elem().Kind() {
	case reflect.Slice:
		// []byte
		var dummy []byte
		valcopy = reflect.ValueOf(&dummy).Elem() // addressable []byte
		valbase = toStructPointer(valcopy.Addr())
	case reflect.Ptr:
		// message; the generated field type is map[K]*Msg (so V is *Msg),
		// so we only need one level of indirection.
		valcopy = reflect.New(mapType.Elem()).Elem() // addressable V
		valbase = toStructPointer(valcopy.Addr())
	default:
		// everything else
		valcopy = reflect.New(mapType.Elem()).Elem()                // addressable V
		valptr := reflect.New(reflect.PtrTo(valcopy.Type())).Elem() // addressable *V
		valptr.Set(valcopy.Addr())                                  //
		valbase = toStructPointer(valptr.Addr())                    // **V
	}
	return
}
Exemple #6
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func decodeMap(v reflect.Value, x interface{}) {
	t := v.Type()
	if v.IsNil() {
		v.Set(reflect.MakeMap(t))
	}
	for k, c := range getNode(x) {
		i := reflect.New(t.Key()).Elem()
		decodeValue(i, k)

		w := v.MapIndex(i)
		if w.IsValid() { // We have an actual element value to decode into.
			if w.Kind() == reflect.Interface {
				w = w.Elem()
			}
			w = reflect.New(w.Type()).Elem()
		} else if t.Elem().Kind() != reflect.Interface { // The map's element type is concrete.
			w = reflect.New(t.Elem()).Elem()
		} else {
			// The best we can do here is to decode as either a string (for scalars) or a map[string]interface {} (for the rest).
			// We could try to guess the type based on the string (e.g. true/false => bool) but that'll get ugly fast,
			// especially if we have to guess the kind (slice vs. array vs. map) and index type (e.g. string, int, etc.)
			switch c.(type) {
			case node:
				w = reflect.MakeMap(stringMapType)
			case string:
				w = reflect.New(stringType).Elem()
			default:
				panic("value is neither node nor string")
			}
		}

		decodeValue(w, c)
		v.SetMapIndex(i, w)
	}
}
func TestUnmarshal(t *testing.T) {
	for i, tt := range unmarshalTests {
		var scan Scanner
		in := []byte(tt.in)
		if err := checkValid(in, &scan); err != nil {
			if !reflect.DeepEqual(err, tt.err) {
				t.Errorf("#%d: checkValid: %#v", i, err)
				continue
			}
		}
		if tt.ptr == nil {
			continue
		}

		// v = new(right-type)
		v := reflect.New(reflect.TypeOf(tt.ptr).Elem())
		dec := NewDecoder(bytes.NewReader(in))
		if tt.useNumber {
			dec.UseNumber()
		}
		if err := dec.Decode(v.Interface()); !reflect.DeepEqual(err, tt.err) {
			t.Errorf("#%d: %v, want %v", i, err, tt.err)
			continue
		} else if err != nil {
			continue
		}
		if !reflect.DeepEqual(v.Elem().Interface(), tt.out) {
			t.Errorf("#%d: mismatch\nhave: %#+v\nwant: %#+v", i, v.Elem().Interface(), tt.out)
			data, _ := Marshal(v.Elem().Interface())
			println(string(data))
			data, _ = Marshal(tt.out)
			println(string(data))
			continue
		}

		// Check round trip.
		if tt.err == nil {
			enc, err := Marshal(v.Interface())
			if err != nil {
				t.Errorf("#%d: error re-marshaling: %v", i, err)
				continue
			}
			vv := reflect.New(reflect.TypeOf(tt.ptr).Elem())
			dec = NewDecoder(bytes.NewReader(enc))
			if tt.useNumber {
				dec.UseNumber()
			}
			if err := dec.Decode(vv.Interface()); err != nil {
				t.Errorf("#%d: error re-unmarshaling %#q: %v", i, enc, err)
				continue
			}
			if !reflect.DeepEqual(v.Elem().Interface(), vv.Elem().Interface()) {
				t.Errorf("#%d: mismatch\nhave: %#+v\nwant: %#+v", i, v.Elem().Interface(), vv.Elem().Interface())
				t.Errorf("     In: %q", strings.Map(noSpace, string(in)))
				t.Errorf("Marshal: %q", strings.Map(noSpace, string(enc)))
				continue
			}
		}
	}
}
func unmarshalMap(value reflect.Value, data interface{}, tag reflect.StructTag) error {
	if data == nil {
		return nil
	}
	mapData, ok := data.(map[string]interface{})
	if !ok {
		return fmt.Errorf("JSON value is not a map (%#v)", data)
	}

	t := value.Type()
	if value.Kind() == reflect.Ptr {
		t = t.Elem()
		if value.IsNil() {
			value.Set(reflect.New(t))
			value.Elem().Set(reflect.MakeMap(t))
		}

		value = value.Elem()
	}

	for k, v := range mapData {
		kvalue := reflect.ValueOf(k)
		vvalue := reflect.New(value.Type().Elem()).Elem()

		unmarshalAny(vvalue, v, "")
		value.SetMapIndex(kvalue, vvalue)
	}

	return nil
}
Exemple #9
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// callCustom calls 'custom' with sv & dv. custom must be a conversion function.
func (c *Converter) callCustom(sv, dv, custom reflect.Value, scope *scope) error {
	if !sv.CanAddr() {
		sv2 := reflect.New(sv.Type())
		sv2.Elem().Set(sv)
		sv = sv2
	} else {
		sv = sv.Addr()
	}
	if !dv.CanAddr() {
		if !dv.CanSet() {
			return scope.errorf("can't addr or set dest.")
		}
		dvOrig := dv
		dv := reflect.New(dvOrig.Type())
		defer func() { dvOrig.Set(dv) }()
	} else {
		dv = dv.Addr()
	}
	args := []reflect.Value{sv, dv, reflect.ValueOf(scope)}
	ret := custom.Call(args)[0].Interface()
	// This convolution is necessary because nil interfaces won't convert
	// to errors.
	if ret == nil {
		return nil
	}
	return ret.(error)
}
Exemple #10
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// Internal function to bind receive operations for a channel.
func (c *EncodedConn) bindRecvChan(subject, queue string, channel interface{}) error {
	chVal := reflect.ValueOf(channel)
	if chVal.Kind() != reflect.Chan {
		return ErrChanArg
	}
	argType := chVal.Type().Elem()

	cb := func(m *Msg) {
		var oPtr reflect.Value
		if argType.Kind() != reflect.Ptr {
			oPtr = reflect.New(argType)
		} else {
			oPtr = reflect.New(argType.Elem())
		}
		if err := c.Enc.Decode(m.Subject, m.Data, oPtr.Interface()); err != nil {
			c.Conn.err = errors.New("nats: Got an error trying to unmarshal: " + err.Error())
			if c.Conn.Opts.AsyncErrorCB != nil {
				go c.Conn.Opts.AsyncErrorCB(c.Conn, m.Sub, c.Conn.err)
			}
			return
		}
		if argType.Kind() != reflect.Ptr {
			oPtr = reflect.Indirect(oPtr)
		}
		chVal.Send(oPtr)
	}

	_, err := c.Conn.subscribe(subject, queue, cb)

	return err
}
Exemple #11
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func RegisterRpcParams(name string, obj interface{}) {
	objType := reflect.TypeOf(obj)
	if name == "" {
		val := reflect.ValueOf(obj)
		name = objType.Name()
		if val.Kind() == reflect.Ptr {
			name = objType.Elem().Name()
		}
	}
	for i := 0; i < objType.NumMethod(); i++ {
		method := objType.Method(i)
		methodType := method.Type
		if methodType.NumIn() == 3 { // if it has three parameters (one is self and two are rpc params)
			out := methodType.In(2)
			if out.Kind() == reflect.Ptr {
				out = out.Elem()
			}
			rpcParamsMap[name+"."+method.Name] = &RpcParams{
				Object:   obj,
				InParam:  reflect.New(methodType.In(1)).Interface(),
				OutParam: reflect.New(out).Interface(),
			}
		}
	}
}
Exemple #12
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func (d *Decoder) decodeSlice(s *decodStatus, v reflect.Value, t reflect.Type, tg tag) error {
	if _, isInline := tg.Modifiers["inline"]; isInline {
		val, ok := s.GetValue(d.env)
		if !ok {
			return nil
		}
		elements := d.arrSep.Split(val, -1)
		slice := reflect.MakeSlice(t, 0, len(elements))
		for _, s := range elements {
			mv := reflect.New(t.Elem())
			err := d.decodeField(mv.Elem(), s)
			if err != nil {
				return err
			}
			slice = reflect.Append(slice, mv.Elem())
		}
		v.Set(slice)
		return nil
	}
	index := s.GetIndex()
	slice := reflect.MakeSlice(t, 0, len(index))
	for _, i := range index {
		mv := reflect.New(t.Elem())
		err := d.decodeElement(s, mv.Elem(), mv.Elem().Type(), tag{Name: strconv.Itoa(i), Modifiers: tg.Modifiers})
		if err != nil {
			return err
		}
		slice = reflect.Append(slice, mv.Elem())
	}
	v.Set(slice)
	return nil
}
Exemple #13
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func (d *decoder) mapping(n *node, out reflect.Value) (good bool) {
	if set := d.setter("!!map", &out, &good); set != nil {
		defer set()
	}
	if out.Kind() == reflect.Struct {
		return d.mappingStruct(n, out)
	}

	if out.Kind() == reflect.Interface {
		// No type hints. Will have to use a generic map.
		iface := out
		out = settableValueOf(make(map[interface{}]interface{}))
		iface.Set(out)
	}

	if out.Kind() != reflect.Map {
		return false
	}
	outt := out.Type()
	kt := outt.Key()
	et := outt.Elem()

	l := len(n.children)
	for i := 0; i < l; i += 2 {
		k := reflect.New(kt).Elem()
		if d.unmarshal(n.children[i], k) {
			e := reflect.New(et).Elem()
			if d.unmarshal(n.children[i+1], e) {
				out.SetMapIndex(k, e)
			}
		}
	}
	return true
}
Exemple #14
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func (d *mapAsMapDecoder) decode(dv, sv reflect.Value) {
	dt := dv.Type()
	dv.Set(reflect.MakeMap(reflect.MapOf(dt.Key(), dt.Elem())))

	var mapKey reflect.Value
	var mapElem reflect.Value

	keyType := dv.Type().Key()
	elemType := dv.Type().Elem()

	for _, sElemKey := range sv.MapKeys() {
		var dElemKey reflect.Value
		var dElemVal reflect.Value

		if !mapKey.IsValid() {
			mapKey = reflect.New(keyType).Elem()
		} else {
			mapKey.Set(reflect.Zero(keyType))
		}
		dElemKey = mapKey

		if !mapElem.IsValid() {
			mapElem = reflect.New(elemType).Elem()
		} else {
			mapElem.Set(reflect.Zero(elemType))
		}
		dElemVal = mapElem

		d.keyDec(dElemKey, sElemKey)
		d.elemDec(dElemVal, sv.MapIndex(sElemKey))

		dv.SetMapIndex(dElemKey, dElemVal)
	}
}
Exemple #15
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// decodeMap treats the next bytes as an XDR encoded variable array of 2-element
// structures whose fields are of the same type as the map keys and elements
// represented by the passed reflection value.  Pointers are automatically
// indirected and allocated as necessary.  It returns the  the number of bytes
// actually read.
//
// An UnmarshalError is returned if any issues are encountered while decoding
// the elements.
func (d *Decoder) decodeMap(v reflect.Value) (int, error) {
	dataLen, n, err := d.DecodeUint()
	if err != nil {
		return n, err
	}

	// Allocate storage for the underlying map if needed.
	vt := v.Type()
	if v.IsNil() {
		v.Set(reflect.MakeMap(vt))
	}

	// Decode each key and value according to their type.
	keyType := vt.Key()
	elemType := vt.Elem()
	for i := uint32(0); i < dataLen; i++ {
		key := reflect.New(keyType).Elem()
		n2, err := d.decode(key)
		n += n2
		if err != nil {
			return n, err
		}

		val := reflect.New(elemType).Elem()
		n2, err = d.decode(val)
		n += n2
		if err != nil {
			return n, err
		}
		v.SetMapIndex(key, val)
	}
	return n, nil
}
Exemple #16
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func lookup(v reflect.Value, s string) reflect.Value {
	var ret reflect.Value
	v = reflect.Indirect(v)
	switch v.Kind() {
	case reflect.Array, reflect.Slice:
		if idx, err := strconv.Atoi(s); err == nil {
			ret = v.Index(idx)
		}
	case reflect.Map:
		keyt := v.Type().Key()
		switch keyt.Kind() {
		case reflect.String:
			ret = v.MapIndex(reflect.ValueOf(s))
		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
			if idx, err := strconv.ParseInt(s, 10, 64); err == nil {
				idxVal := reflect.New(keyt).Elem()
				idxVal.SetInt(idx)
				ret = v.MapIndex(idxVal)
			}
		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
			if idx, err := strconv.ParseUint(s, 10, 64); err == nil {
				idxVal := reflect.New(keyt).Elem()
				idxVal.SetUint(idx)
				ret = v.MapIndex(idxVal)
			}
		}
	case reflect.Struct:
		ret = v.FieldByName(s)
	}
	// TODO: Find a way to look up methods by name
	return ret
}
Exemple #17
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// get into map pointed at by v
func getMap(data *C.pn_data_t, v interface{}) {
	mapValue := reflect.ValueOf(v).Elem()
	mapValue.Set(reflect.MakeMap(mapValue.Type())) // Clear the map
	switch pnType := C.pn_data_type(data); pnType {
	case C.PN_MAP:
		count := int(C.pn_data_get_map(data))
		if bool(C.pn_data_enter(data)) {
			defer C.pn_data_exit(data)
			for i := 0; i < count/2; i++ {
				if bool(C.pn_data_next(data)) {
					key := reflect.New(mapValue.Type().Key())
					unmarshal(key.Interface(), data)
					if bool(C.pn_data_next(data)) {
						val := reflect.New(mapValue.Type().Elem())
						unmarshal(val.Interface(), data)
						mapValue.SetMapIndex(key.Elem(), val.Elem())
					}
				}
			}
		}
	case C.PN_INVALID: // Leave the map empty
	default:
		panic(newUnmarshalError(pnType, v))
	}
}
func (scope *Scope) createJoinTable(field *StructField) {
	if relationship := field.Relationship; relationship != nil && relationship.JoinTableHandler != nil {
		joinTableHandler := relationship.JoinTableHandler
		joinTable := joinTableHandler.Table(scope.db)
		if !scope.Dialect().HasTable(scope, joinTable) {
			toScope := &Scope{Value: reflect.New(field.Struct.Type).Interface()}

			var sqlTypes []string
			for idx, fieldName := range relationship.ForeignFieldNames {
				if field, ok := scope.Fields()[fieldName]; ok {
					value := reflect.Indirect(reflect.New(field.Struct.Type))
					primaryKeySqlType := scope.Dialect().SqlTag(value, 255, false)
					sqlTypes = append(sqlTypes, scope.Quote(relationship.ForeignDBNames[idx])+" "+primaryKeySqlType)
				}
			}

			for idx, fieldName := range relationship.AssociationForeignFieldNames {
				if field, ok := toScope.Fields()[fieldName]; ok {
					value := reflect.Indirect(reflect.New(field.Struct.Type))
					primaryKeySqlType := scope.Dialect().SqlTag(value, 255, false)
					sqlTypes = append(sqlTypes, scope.Quote(relationship.AssociationForeignDBNames[idx])+" "+primaryKeySqlType)
				}
			}
			scope.Err(scope.NewDB().Exec(fmt.Sprintf("CREATE TABLE %v (%v) %s", scope.Quote(joinTable), strings.Join(sqlTypes, ","), scope.getTableOptions())).Error)
		}
		scope.NewDB().Table(joinTable).AutoMigrate(joinTableHandler)
	}
}
Exemple #19
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func (scope *Scope) getColumnsAsScope(column string) *Scope {
	values := scope.IndirectValue()
	switch values.Kind() {
	case reflect.Slice:
		modelType := values.Type().Elem()
		if modelType.Kind() == reflect.Ptr {
			modelType = modelType.Elem()
		}
		fieldStruct, _ := modelType.FieldByName(column)
		var columns reflect.Value
		if fieldStruct.Type.Kind() == reflect.Slice || fieldStruct.Type.Kind() == reflect.Ptr {
			columns = reflect.New(reflect.SliceOf(reflect.PtrTo(fieldStruct.Type.Elem()))).Elem()
		} else {
			columns = reflect.New(reflect.SliceOf(reflect.PtrTo(fieldStruct.Type))).Elem()
		}
		for i := 0; i < values.Len(); i++ {
			column := reflect.Indirect(values.Index(i)).FieldByName(column)
			if column.Kind() == reflect.Ptr {
				column = column.Elem()
			}
			if column.Kind() == reflect.Slice {
				for i := 0; i < column.Len(); i++ {
					columns = reflect.Append(columns, column.Index(i).Addr())
				}
			} else {
				columns = reflect.Append(columns, column.Addr())
			}
		}
		return scope.New(columns.Interface())
	case reflect.Struct:
		return scope.New(values.FieldByName(column).Addr().Interface())
	}
	return nil
}
Exemple #20
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func SelectOne(res interface{}, query string, args ...interface{}) error {
	if strings.Index(query, "SELECT") == -1 {
		query = selectWhere(res, query)
	}

	// Handler pointer to pointer
	t := reflect.TypeOf(res).Elem()
	if t.Kind() == reflect.Ptr {
		t = t.Elem()                        // User
		val := reflect.New(t)               // *User
		dest := reflect.ValueOf(res).Elem() // *User
		_, err := db.QueryOne(val.Interface(), query, args...)
		h(err)
		if err != nil {
			return err
		}

		if dest.IsNil() {
			dest.Set(reflect.New(t))
		}
		dest.Elem().Set(val.Elem()) // User = User
		return err
	}

	var err error
	timeout(func() {
		_, err = db.QueryOne(res, query, args...)
		h(err)
	})
	return err
}
Exemple #21
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func (orm *Model) FindAll(rowsSlicePtr interface{}) error {
	orm.ScanPK(rowsSlicePtr)
	sliceValue := reflect.Indirect(reflect.ValueOf(rowsSlicePtr))
	if sliceValue.Kind() != reflect.Slice {
		return errors.New("needs a pointer to a slice")
	}

	sliceElementType := sliceValue.Type().Elem()
	st := reflect.New(sliceElementType)
	var keys []string
	results, _ := scanStructIntoMap(st.Interface())
	if orm.TableName == "" {
		orm.TableName = getTableName(rowsSlicePtr)
	}
	for key, _ := range results {
		keys = append(keys, key)
	}
	orm.ColumnStr = strings.Join(keys, ", ")

	resultsSlice, err := orm.FindMap()
	if err != nil {
		return err
	}

	for _, results := range resultsSlice {
		newValue := reflect.New(sliceElementType)
		scanMapIntoStruct(newValue.Interface(), results)
		sliceValue.Set(reflect.Append(sliceValue, reflect.Indirect(reflect.ValueOf(newValue.Interface()))))
	}
	return nil
}
Exemple #22
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// This is a helper that initializes (zeros) a new app controller value.
// Generally, everything is set to its zero value, except:
// 1. Embedded controller pointers are newed up.
// 2. The rev.Controller embedded type is set to the value provided.
// Returns a value representing a pointer to the new app controller.
func initNewAppController(appControllerType reflect.Type, c *Controller) reflect.Value {
	// It might be a multi-level embedding, so we have to create new controllers
	// at every level of the hierarchy.
	// ASSUME: the first field in each type is the way up to rev.Controller.
	appControllerPtr := reflect.New(appControllerType)
	ptr := appControllerPtr
	for {
		var (
			embeddedField     reflect.Value = ptr.Elem().Field(0)
			embeddedFieldType reflect.Type  = embeddedField.Type()
		)

		// Check if it's the controller.
		if embeddedFieldType == controllerType {
			embeddedField.Set(reflect.ValueOf(c).Elem())
			break
		} else if embeddedFieldType == controllerPtrType {
			embeddedField.Set(reflect.ValueOf(c))
			break
		}

		// If the embedded field is a pointer, then instantiate an object and set it.
		// (If it's not a pointer, then it's already initialized)
		if embeddedFieldType.Kind() == reflect.Ptr {
			embeddedField.Set(reflect.New(embeddedFieldType.Elem()))
			ptr = embeddedField
		} else {
			ptr = embeddedField.Addr()
		}
	}
	return appControllerPtr
}
Exemple #23
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func (server *Server) readRequest(codec ServerCodec) (service *service, mtype *methodType, req *Request, argv, replyv reflect.Value, err os.Error) {
	service, mtype, req, err = server.readRequestHeader(codec)
	if err != nil {
		if err == os.EOF || err == io.ErrUnexpectedEOF {
			return
		}
		// discard body
		codec.ReadRequestBody(nil)
		return
	}

	// Decode the argument value.
	argIsValue := false // if true, need to indirect before calling.
	if mtype.ArgType.Kind() == reflect.Ptr {
		argv = reflect.New(mtype.ArgType.Elem())
	} else {
		argv = reflect.New(mtype.ArgType)
		argIsValue = true
	}
	// argv guaranteed to be a pointer now.
	if err = codec.ReadRequestBody(argv.Interface()); err != nil {
		return
	}
	if argIsValue {
		argv = argv.Elem()
	}

	replyv = reflect.New(mtype.ReplyType.Elem())
	return
}
Exemple #24
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func (ju *jsonUnmarshaler) UnmarshalPayload(msg Message) error {
	var result interface{}

	_body := msg.Body()
	var err error
	if bodyT := reflect.TypeOf(_body); bodyT != nil && bodyT.AssignableTo(ju.T) {
		// The message already has an appropriate body; unmarshal into it
		err = json.Unmarshal(msg.Payload(), result)
	} else {
		// No body (or an inappropriate type); overwrite with a new object
		if t := ju.T; t.Kind() == reflect.Ptr {
			result = reflect.New(t.Elem()).Interface()
			err = json.Unmarshal(msg.Payload(), result)
		} else {
			result = reflect.New(t).Interface()
			err = json.Unmarshal(msg.Payload(), result)
			result = reflect.Indirect(reflect.ValueOf(result)).Interface()
		}
	}

	if err == nil {
		msg.SetBody(result)
	}
	return err
}
Exemple #25
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func stringTypeOf(i interface{}) (string, error) {
	_, isByteSlice := i.([]byte)
	if !isByteSlice {
		// Check if we found a higher kinded type
		switch reflect.ValueOf(i).Kind() {
		case reflect.Slice:
			elemVal := reflect.Indirect(reflect.New(reflect.TypeOf(i).Elem())).Interface()
			ct := cassaType(elemVal)
			if ct == gocql.TypeCustom {
				return "", fmt.Errorf("Unsupported type %T", i)
			}
			return fmt.Sprintf("list<%v>", ct), nil
		case reflect.Map:
			keyVal := reflect.Indirect(reflect.New(reflect.TypeOf(i).Key())).Interface()
			elemVal := reflect.Indirect(reflect.New(reflect.TypeOf(i).Elem())).Interface()
			keyCt := cassaType(keyVal)
			elemCt := cassaType(elemVal)
			if keyCt == gocql.TypeCustom || elemCt == gocql.TypeCustom {
				return "", fmt.Errorf("Unsupported map key or value type %T", i)
			}
			return fmt.Sprintf("map<%v, %v>", keyCt, elemCt), nil
		}
	}
	ct := cassaType(i)
	if ct == gocql.TypeCustom {
		return "", fmt.Errorf("Unsupported type %T", i)
	}
	return cassaTypeToString(ct)
}
Exemple #26
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func (d *Decoder) mapValue(v reflect.Value) error {
	n, err := d.DecodeMapLen()
	if err != nil {
		return err
	}
	if n == -1 {
		return nil
	}

	typ := v.Type()
	if v.IsNil() {
		v.Set(reflect.MakeMap(typ))
	}
	keyType := typ.Key()
	valueType := typ.Elem()

	for i := 0; i < n; i++ {
		mk := reflect.New(keyType).Elem()
		if err := d.DecodeValue(mk); err != nil {
			return err
		}

		mv := reflect.New(valueType).Elem()
		if err := d.DecodeValue(mv); err != nil {
			return err
		}

		v.SetMapIndex(mk, mv)
	}

	return nil
}
Exemple #27
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func (processor *processor) decode() (errors []error) {
	if processor.checkSkipLeft() || processor.MetaValues == nil {
		return
	}

	for _, metaValue := range processor.MetaValues.Values {
		meta := metaValue.Meta
		if meta == nil {
			continue
		}

		if processor.newRecord && !meta.HasPermission(roles.Create, processor.Context) {
			continue
		} else if !meta.HasPermission(roles.Update, processor.Context) {
			continue
		}

		if setter := meta.GetSetter(); setter != nil {
			setter(processor.Result, metaValue, processor.Context)
			continue
		}

		res := metaValue.Meta.GetResource()
		if res == nil {
			continue
		}

		field := reflect.Indirect(reflect.ValueOf(processor.Result)).FieldByName(meta.GetFieldName())
		if field.Kind() == reflect.Struct {
			value := reflect.New(field.Type())
			associationProcessor := DecodeToResource(res, value.Interface(), metaValue.MetaValues, processor.Context)
			associationProcessor.Start()
			if !associationProcessor.SkipLeft {
				field.Set(value.Elem())
			}
		} else if field.Kind() == reflect.Slice {
			var fieldType = field.Type().Elem()
			var isPtr bool
			if fieldType.Kind() == reflect.Ptr {
				fieldType = fieldType.Elem()
				isPtr = true
			}

			value := reflect.New(fieldType)
			associationProcessor := DecodeToResource(res, value.Interface(), metaValue.MetaValues, processor.Context)
			associationProcessor.Start()
			if !associationProcessor.SkipLeft {
				if !reflect.DeepEqual(reflect.Zero(fieldType).Interface(), value.Elem().Interface()) {
					if isPtr {
						field.Set(reflect.Append(field, value))
					} else {
						field.Set(reflect.Append(field, value.Elem()))
					}
				}
			}
		}
	}

	return
}
Exemple #28
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func (s *S) TestUnmarshal(c *C) {
	for _, item := range unmarshalTests {
		t := reflect.ValueOf(item.value).Type()
		var value interface{}
		switch t.Kind() {
		case reflect.Map:
			value = reflect.MakeMap(t).Interface()
		case reflect.String:
			value = reflect.New(t).Interface()
		case reflect.Ptr:
			value = reflect.New(t.Elem()).Interface()
		default:
			c.Fatalf("missing case for %s", t)
		}
		err := yaml.Unmarshal([]byte(item.data), value)
		if _, ok := err.(*yaml.TypeError); !ok {
			c.Assert(err, IsNil)
		}
		if t.Kind() == reflect.String {
			c.Assert(*value.(*string), Equals, item.value)
		} else {
			c.Assert(value, DeepEquals, item.value)
		}
	}
}
Exemple #29
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// defaultExtensionValue returns the default value for extension.
// If no default for an extension is defined ErrMissingExtension is returned.
func defaultExtensionValue(extension *ExtensionDesc) (interface{}, error) {
	t := reflect.TypeOf(extension.ExtensionType)
	props := extensionProperties(extension)

	sf, _, err := fieldDefault(t, props)
	if err != nil {
		return nil, err
	}

	if sf == nil || sf.value == nil {
		// There is no default value.
		return nil, ErrMissingExtension
	}

	if t.Kind() != reflect.Ptr {
		// We do not need to return a Ptr, we can directly return sf.value.
		return sf.value, nil
	}

	// We need to return an interface{} that is a pointer to sf.value.
	value := reflect.New(t).Elem()
	value.Set(reflect.New(value.Type().Elem()))
	if sf.kind == reflect.Int32 {
		// We may have an int32 or an enum, but the underlying data is int32.
		// Since we can't set an int32 into a non int32 reflect.value directly
		// set it as a int32.
		value.Elem().SetInt(int64(sf.value.(int32)))
	} else {
		value.Elem().Set(reflect.ValueOf(sf.value))
	}
	return value.Interface(), nil
}
Exemple #30
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func (m *reflectedMethod) NewInput() reflect.Value {
	if m.InputType.Kind() == reflect.Ptr {
		return reflect.New(m.InputType.Elem())
	} else {
		return reflect.New(m.InputType)
	}
}