// deserializeStructInternal is a helper function for deserializeStruct.
// It takes a gob decoder and struct field metadata, and then assigns the correct value to the specified struct field.
func deserializeStructInternal(dec *gob.Decoder, fi *fieldInfo, fieldName string, nameParts []string, slice, zeroValue bool, structHistory map[string]map[string]bool, v reflect.Value, t reflect.Type) error {
if len(fi.sliceIndex) > 0 {
v = v.FieldByIndex(fi.sliceIndex)
t = v.Type()
var sv reflect.Value
createNew := false
nameIdx := len(fi.sliceIndex)
absName, childName := strings.Join(nameParts[:nameIdx], "."), strings.Join(nameParts[nameIdx:], ".")
sh, ok := structHistory[absName]
if !ok || sh[childName] {
sh = make(map[string]bool, 8)
structHistory[absName] = sh
createNew = true
} else if len(sh) == 0 {
createNew = true
}
if createNew {
structType := t.Elem()
sv = reflect.New(structType).Elem()
v.Set(reflect.Append(v, sv))
}
sv = v.Index(v.Len() - 1)
sh[childName] = true
v = sv
t = v.Type()
}
vf := v.FieldByIndex(fi.fieldIndex)
if vf.Kind() == reflect.Slice && !slice {
elemType := vf.Type().Elem()
if elemType.Kind() == reflect.Uint8 {
if !zeroValue {
if err := dec.DecodeValue(vf); err != nil {
return fmt.Errorf("goon: Failed to decode field %v - %v", fieldName, err)
}
}
} else {
ev := reflect.New(elemType).Elem()
if !zeroValue {
if err := dec.DecodeValue(ev); err != nil {
return fmt.Errorf("goon: Failed to decode field %v - %v", fieldName, err)
}
}
vf.Set(reflect.Append(vf, ev))
}
} else if !zeroValue {
if err := dec.DecodeValue(vf); err != nil {
return fmt.Errorf("goon: Failed to decode field %v - %v", fieldName, err)
}
}
return nil
}
func (scope *Scope) getColumnAsScope(column string) *Scope {
indirectScopeValue := scope.IndirectValue()
switch indirectScopeValue.Kind() {
case reflect.Slice:
if fieldStruct, ok := scope.GetModelStruct().ModelType.FieldByName(column); ok {
fieldType := fieldStruct.Type
if fieldType.Kind() == reflect.Slice || fieldType.Kind() == reflect.Ptr {
fieldType = fieldType.Elem()
}
results := reflect.New(reflect.SliceOf(reflect.PtrTo(fieldType))).Elem()
for i := 0; i < indirectScopeValue.Len(); i++ {
result := indirect(indirect(indirectScopeValue.Index(i)).FieldByName(column))
if result.Kind() == reflect.Slice {
for j := 0; j < result.Len(); j++ {
if elem := result.Index(j); elem.CanAddr() {
results = reflect.Append(results, elem.Addr())
}
}
} else if result.CanAddr() {
results = reflect.Append(results, result.Addr())
}
}
return scope.New(results.Interface())
}
case reflect.Struct:
if field := indirectScopeValue.FieldByName(column); field.CanAddr() {
return scope.New(field.Addr().Interface())
}
}
return nil
}
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
}
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
}
func (l *listSink) add(i *item) (bool, error) {
if l.limit == 0 {
return true, nil
}
if l.skip > 0 {
l.skip--
return false, nil
}
if !l.results.IsValid() {
l.results = reflect.MakeSlice(reflect.Indirect(l.ref).Type(), 0, 0)
}
if l.limit > 0 {
l.limit--
}
if l.idx == l.results.Len() {
if l.isPtr {
l.results = reflect.Append(l.results, *i.value)
} else {
l.results = reflect.Append(l.results, reflect.Indirect(*i.value))
}
}
l.idx++
return l.limit == 0, nil
}
//MultiQuery executes given query and returns slice of all the entities it returns, with their keys set.
func MultiQuery(c appengine.Context, typ reflect.Type, kind string, query *datastore.Query) (ms interface{}, err error) {
is := reflect.MakeSlice(reflect.SliceOf(reflect.PtrTo(typ)), 0, 0)
iter := query.Run(c)
for {
val := reflect.New(typ)
var key *datastore.Key
key, err = iter.Next(val.Interface())
if err != nil {
if err == datastore.Done {
err = nil
val.MethodByName("SetKey").Call([]reflect.Value{reflect.ValueOf(key)})
reflect.Append(is, val)
break
}
return
}
val.MethodByName("SetKey").Call([]reflect.Value{reflect.ValueOf(key)})
is = reflect.Append(is, val)
}
ms = is.Interface()
return
}
// If op is Operator of "[]T", type of f must be "func(T) T2".
// And GroupBy(f) returns value of "map[T2] []T"
func (op *Op) GroupBy(f interface{}) interface{} {
vs := reflect.ValueOf(op.Slice)
vf := reflect.ValueOf(f)
tf := vf.Type()
if tf.NumIn() != 1 {
panic("Number of Argument must be 1")
}
if tf.NumOut() != 1 {
panic("Number of return value must be 1")
}
tif := tf.In(0)
tof := tf.Out(0)
if tif != vs.Type().Elem() {
panic("Mismatch function type")
}
len := vs.Len()
vom := reflect.MakeMap(reflect.MapOf(tof, vs.Type()))
for i := 0; i < len; i++ {
v := vs.Index(i)
vk := vf.Call([]reflect.Value{v})[0]
vi := vom.MapIndex(vk)
if vi.IsValid() {
vom.SetMapIndex(vk, reflect.Append(vi, v))
} else {
vom.SetMapIndex(vk, reflect.Append(reflect.MakeSlice(vs.Type(), 0, len), v))
}
}
return vom.Interface()
}
func ArrayMerge(arrayData interface{}, arrayData2 interface{}, arrayOther ...interface{}) interface{} {
arrayOther = append([]interface{}{arrayData2}, arrayOther...)
arrayOtherMap := sliceToMap(arrayOther)
arrayValue := reflect.ValueOf(arrayData)
arrayType := arrayValue.Type()
arrayLen := arrayValue.Len()
result := reflect.MakeSlice(arrayType, 0, 0)
for i := 0; i != arrayLen; i++ {
singleArrayDataValue := arrayValue.Index(i)
singleArrayDataValueInterface := singleArrayDataValue.Interface()
isFirst, isExist := arrayOtherMap[singleArrayDataValueInterface]
if isExist == true && isFirst == false {
continue
}
result = reflect.Append(result, singleArrayDataValue)
arrayOtherMap[singleArrayDataValueInterface] = false
}
for single, isFirst := range arrayOtherMap {
if isFirst == false {
continue
}
result = reflect.Append(result, reflect.ValueOf(single))
}
return result.Interface()
}
func _partition(values []reflect.Value) []reflect.Value {
slice := interfaceToValue(values[0])
fn := values[1]
var t, f reflect.Value
if values[0].Kind() == reflect.Interface {
t = reflect.ValueOf(make([]interface{}, 0))
f = reflect.ValueOf(make([]interface{}, 0))
} else {
t = reflect.MakeSlice(slice.Type(), 0, 0)
f = reflect.MakeSlice(slice.Type(), 0, 0)
}
for i := 0; i < slice.Len(); i++ {
e := slice.Index(i)
r := fn.Call([]reflect.Value{e})
if r[0].Bool() {
t = reflect.Append(t, e)
} else {
f = reflect.Append(f, e)
}
}
return []reflect.Value{t, f}
}
func (association *Association) Append(values ...interface{}) *Association {
scope := association.Scope
field := scope.IndirectValue().FieldByName(association.Column)
for _, value := range values {
reflectvalue := reflect.ValueOf(value)
if reflectvalue.Kind() == reflect.Ptr {
if reflectvalue.Elem().Kind() == reflect.Struct {
if field.Type().Elem().Kind() == reflect.Ptr {
field.Set(reflect.Append(field, reflectvalue))
} else if field.Type().Elem().Kind() == reflect.Struct {
field.Set(reflect.Append(field, reflectvalue.Elem()))
}
} else if reflectvalue.Elem().Kind() == reflect.Slice {
if field.Type().Elem().Kind() == reflect.Ptr {
field.Set(reflect.AppendSlice(field, reflectvalue))
} else if field.Type().Elem().Kind() == reflect.Struct {
field.Set(reflect.AppendSlice(field, reflectvalue.Elem()))
}
}
} else if reflectvalue.Kind() == reflect.Struct && field.Type().Elem().Kind() == reflect.Struct {
field.Set(reflect.Append(field, reflectvalue))
} else if reflectvalue.Kind() == reflect.Slice && field.Type().Elem() == reflectvalue.Type().Elem() {
field.Set(reflect.AppendSlice(field, reflectvalue))
} else {
association.err(errors.New("invalid association type"))
}
}
scope.callCallbacks(scope.db.parent.callback.updates)
return association.err(scope.db.Error)
}
//This will execute the SQL and append results to the slice.
// var ids []uint32
// if err := From("test").Select("id").ScanVals(&ids); err != nil{
// panic(err.Error()
// }
//
//i: Takes a pointer to a slice of primitive values.
func (me CrudExec) ScanVals(i interface{}) error {
if me.err != nil {
return me.err
}
val := reflect.ValueOf(i)
if val.Kind() != reflect.Ptr {
return NewGoquError("Type must be a pointer to a slice when calling ScanVals")
}
val = reflect.Indirect(val)
if val.Kind() != reflect.Slice {
return NewGoquError("Type must be a pointer to a slice when calling ScanVals")
}
t, _, isSliceOfPointers := getTypeInfo(i, val)
rows, err := me.database.Query(me.Sql, me.Args...)
if err != nil {
return err
}
defer rows.Close()
for rows.Next() {
row := reflect.New(t)
if err := rows.Scan(row.Interface()); err != nil {
return err
}
if isSliceOfPointers {
val.Set(reflect.Append(val, row))
} else {
val.Set(reflect.Append(val, reflect.Indirect(row)))
}
}
if err := rows.Err(); err != nil {
return err
}
return nil
}
// Remove duplicate element of a slice.
// If error occurs, return value of r will be nil.
func UniqueWithError(s interface{}) (r interface{}, err error) {
v := reflect.ValueOf(s)
if v.Kind() != reflect.Slice {
err = fmt.Errorf("Parameter a must be a slice.")
return
}
rest := reflect.MakeSlice(reflect.TypeOf(s), 0, 0)
for i := v.Len() - 1; i >= 0; i-- {
current := reflect.ValueOf(s).Slice(0, i)
exist, e := InWithError(current.Interface(), v.Index(i).Interface())
if e != nil {
err = e
return
}
if !exist {
rest = reflect.Append(rest, v.Index(i))
}
s = current.Interface()
}
n := reflect.ValueOf(s)
for i := rest.Len() - 1; i >= 0; i-- {
n = reflect.Append(n, rest.Index(i))
}
r = n.Interface()
return
}
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
}
func (p *partitioner) partitionate(val, idx_or_key reflect.Value) {
if ok := callPredicate(p.fn, val, idx_or_key); ok {
p.t = reflect.Append(p.t, val)
} else {
p.f = reflect.Append(p.f, val)
}
}
func GetSliceConvert(c *Convertors) func(*Params, string, reflect.Type) reflect.Value {
return func(p *Params, name string, typ reflect.Type) reflect.Value {
var values ItemByIndex
var maxIdx = 0
var noindex = 0
processItem := func(key string, vals []string) {
var idx int
var err error
if !strings.HasPrefix(key, name+"[") {
return
}
lIdx, rIdx := len(name), strings.IndexByte(key[len(name):], ']')+len(name)
if rIdx == -1 {
//not have ] char in key
return
}
//process e.g. name[]
if lIdx == rIdx-1 {
noindex++
goto END
}
idx, err = strconv.Atoi(key[lIdx+1 : rIdx])
if err != nil {
return
}
if idx > maxIdx {
maxIdx = idx
}
END:
value := c.Convert(p, key[:rIdx+1], typ.Elem())
values = append(values, &item{idx, value})
}
for k, vals := range p.Values {
processItem(k, vals)
}
//if array len small than 10000, keep index
if maxIdx < 10000 {
slice := reflect.MakeSlice(typ, maxIdx+1, maxIdx+noindex+1)
for _, val := range values {
if val.index > -1 {
slice.Index(val.index).Set(val.value)
} else {
slice = reflect.Append(slice, val.value)
}
}
return slice
}
sort.Sort(values)
slice := reflect.MakeSlice(typ, 0, len(values))
for _, val := range values {
slice = reflect.Append(slice, val.value)
}
return slice
}
}
// Fully scan a sql.Rows result into the dest slice. StructScan destinations MUST
// have fields that map to every column in the result, and they MAY have fields
// in addition to those. Fields are mapped to column names by lowercasing the
// field names by default: use the struct tag `db` to specify exact column names
// for each field.
//
// StructScan will scan in the entire rows result, so if you need do not want to
// allocate structs for the entire result, use Queryx and see sqlx.Rows.StructScan.
func StructScan(rows *sql.Rows, dest interface{}) error {
var v, vp reflect.Value
var isPtr bool
value := reflect.ValueOf(dest)
if value.Kind() != reflect.Ptr {
return errors.New("Must pass a pointer, not a value, to StructScan destination.")
}
direct := reflect.Indirect(value)
slice, err := BaseSliceType(value.Type())
if err != nil {
return err
}
isPtr = slice.Elem().Kind() == reflect.Ptr
base, err := BaseStructType(slice.Elem())
if err != nil {
return err
}
fm, err := getFieldmap(base)
if err != nil {
return err
}
columns, err := rows.Columns()
if err != nil {
return err
}
fields, err := getFields(fm, columns)
if err != nil {
return err
}
// this will hold interfaces which are pointers to each field in the struct
values := make([]interface{}, len(columns))
for rows.Next() {
// create a new struct type (which returns PtrTo) and indirect it
vp = reflect.New(base)
v = reflect.Indirect(vp)
setValues(fields, v, values)
// scan into the struct field pointers and append to our results
err = rows.Scan(values...)
if err != nil {
return err
}
if isPtr {
direct.Set(reflect.Append(direct, vp))
} else {
direct.Set(reflect.Append(direct, v))
}
}
return nil
}
func extractResponse(body []byte, results interface{}, structType reflect.Type) (err error) {
if structType == nil {
structType = validateResultsType(results)
}
// results is now guaranteed to be a pointer to a slice of structs.
sliceValue := reflect.ValueOf(results).Elem()
// decode JSON response body:
yrsp := new(yqlResponse)
err = json.Unmarshal(body, yrsp)
if err != nil {
// debugging info:
log.Printf("response: %s\n", body)
return
}
// Decode the Results map as either an array of objects or a single object:
quote := yrsp.Query.Results["quote"]
if quote == nil {
// TODO(jsd): clear the sliceValue pointer to nil?
return
}
switch t := quote.(type) {
default:
panic(errors.New("unexpected JSON result type for 'quote'"))
case []interface{}:
sl := sliceValue
for j, n := range t {
// Append to the slice for each array element:
m := n.(map[string]interface{})
sl = reflect.Append(sl, reflect.Zero(structType))
el := sl.Index(j)
for i := 0; i < structType.NumField(); i++ {
f := structType.Field(i)
if v, ok := m[f.Name]; ok {
el.Field(i).Set(reflect.ValueOf(v))
}
}
}
sliceValue.Set(sl)
case map[string]interface{}:
// Insert the only element of the slice:
sl := reflect.Append(sliceValue, reflect.Zero(structType))
el0 := sl.Index(0)
for i := 0; i < structType.NumField(); i++ {
f := structType.Field(i)
if v, ok := t[f.Name]; ok {
el0.Field(i).Set(reflect.ValueOf(v))
}
}
sliceValue.Set(sl)
}
return
}
func newList(p parser.Interface, typ reflect.Type) (reflect.Value, error) {
list := reflect.MakeSlice(typ, 0, 0)
for {
if err := p.Next(); err != nil {
if err == io.EOF {
return list, nil
} else {
panic(err)
}
}
if p.IsLeaf() {
return reflect.ValueOf(nil), fmt.Errorf("list: did not expect leaf")
}
_, err := p.Int()
if err != nil {
return reflect.ValueOf(nil), err
}
elemType := typ.Elem()
elemKind := elemType.Kind()
elemIsPtr := false
if elemKind == reflect.Ptr {
elemIsPtr = true
elemType = typ.Elem().Elem()
elemKind = elemType.Kind()
}
p.Down()
switch elemKind {
case reflect.Struct:
if !p.IsLeaf() {
elem := reflect.New(elemType).Elem()
if err := encodeStruct(p, elem); err != nil {
return reflect.ValueOf(nil), err
}
if elemIsPtr {
elem = elem.Addr()
}
list = reflect.Append(list, elem)
} else {
list = reflect.Append(list, reflect.Zero(typ.Elem()))
}
case reflect.Slice:
newList, err := newList(p, elemType)
if err != nil {
return reflect.ValueOf(nil), err
}
list = reflect.Append(list, newList)
default:
elem, err := newValue(p, typ.Elem())
if err != nil {
return reflect.ValueOf(nil), err
}
list = reflect.Append(list, elem)
}
p.Up()
}
}
// subtractRepeatedMessage subtracts protos in list2 from the corresponding protos in list1.
// The input lists should only contain protos, and the protos should have their identifiers
// be their first field.
func subtractRepeatedMessage(list1, list2 interface{}) reflect.Value {
if list1 == nil && list2 == nil {
return reflect.ValueOf([]proto.Message{})
}
l1 := genericListOrDie(list1)
if list2 == nil {
return l1
}
l2 := genericListOrDie(list2)
if list1 == nil {
// Need to make negatives of the elements in list2, so can't just return here.
l1 = reflect.MakeSlice(l2.Type(), 0, 0)
}
t1, t2 := l1.Type(), l2.Type()
if t1 != t2 {
log.Fatalf("Mismatched list types: %v vs %v", t1, t2)
}
// All entries may not occur in both files, so use maps to keep track of everything.
m1, m2 := make(map[string]proto.Message), make(map[string]proto.Message)
for i := 0; i < l1.Len(); i++ {
item := l1.Index(i)
m1[name(item)] = item.Interface().(proto.Message)
}
for i := 0; i < l2.Len(); i++ {
item := l2.Index(i)
m2[name(item)] = item.Interface().(proto.Message)
}
out := reflect.MakeSlice(t1, 0, l1.Len()+l2.Len())
for n, p1 := range m1 {
p2, ok := m2[n]
if !ok {
// In list1 but not list2.
out = reflect.Append(out, reflect.ValueOf(proto.Clone(p1)))
continue
}
if diff := subtractMessage(p1, p2); diff != nil {
out = reflect.Append(out, reflect.ValueOf(diff))
}
}
for n, p2 := range m2 {
if _, ok := m1[n]; !ok {
// In list2 but not list1. Subtract to get negative values.
if diff := subtractMessage(nil, p2); diff != nil {
out = reflect.Append(out, reflect.ValueOf(diff))
}
}
}
if out.Len() == 0 {
return reflect.Zero(l1.Type())
}
return out
}
// all populates all rows of query result into a slice of struct or NullStringMap.
// Note that the slice must be given as a pointer.
func (r *Rows) all(slice interface{}) error {
defer r.Close()
v := reflect.ValueOf(slice)
if v.Kind() != reflect.Ptr || v.IsNil() {
return VarTypeError("must be a pointer")
}
v = indirect(v)
if v.Kind() != reflect.Slice {
return VarTypeError("must be a slice of struct or NullStringMap")
}
t := v.Type()
et := t.Elem()
if et.Kind() == reflect.Map {
for r.Next() {
ev, ok := reflect.MakeMap(et).Interface().(NullStringMap)
if !ok {
return VarTypeError("must be a slice of struct or NullStringMap")
}
if err := r.ScanMap(ev); err != nil {
return err
}
v.Set(reflect.Append(v, reflect.ValueOf(ev)))
}
return r.Close()
}
if et.Kind() != reflect.Struct {
return VarTypeError("must be a slice of struct or NullStringMap")
}
si := getStructInfo(t.Elem(), r.fieldMapFunc)
cols, _ := r.Columns()
for r.Next() {
ev := reflect.New(et).Elem()
refs := make([]interface{}, len(cols))
for i, col := range cols {
if fi, ok := si.dbNameMap[col]; ok {
refs[i] = fi.getField(ev).Addr().Interface()
} else {
refs[i] = &sql.NullString{}
}
}
if err := r.Scan(refs...); err != nil {
return err
}
v.Set(reflect.Append(v, ev))
}
return r.Close()
}
// unmarshal for when rv's Kind is Slice
func unmarshalSlice(av *dynamodb.AttributeValue, rv reflect.Value) error {
switch {
case av.B != nil:
rv.SetBytes(av.B)
return nil
case av.L != nil:
slicev := reflect.MakeSlice(rv.Type(), 0, len(av.L))
for _, innerAV := range av.L {
innerRV := reflect.New(rv.Type().Elem()).Elem()
if err := unmarshalReflect(innerAV, innerRV); err != nil {
return err
}
slicev = reflect.Append(slicev, innerRV)
}
rv.Set(slicev)
return nil
// there's probably a better way to do these
case av.BS != nil:
slicev := reflect.MakeSlice(rv.Type(), 0, len(av.L))
for _, b := range av.BS {
innerRV := reflect.New(rv.Type().Elem()).Elem()
if err := unmarshalReflect(&dynamodb.AttributeValue{B: b}, innerRV); err != nil {
return err
}
slicev = reflect.Append(slicev, innerRV)
}
rv.Set(slicev)
return nil
case av.SS != nil:
slicev := reflect.MakeSlice(rv.Type(), 0, len(av.L))
for _, str := range av.SS {
innerRV := reflect.New(rv.Type().Elem()).Elem()
if err := unmarshalReflect(&dynamodb.AttributeValue{S: str}, innerRV); err != nil {
return err
}
slicev = reflect.Append(slicev, innerRV)
}
rv.Set(slicev)
return nil
case av.NS != nil:
slicev := reflect.MakeSlice(rv.Type(), 0, len(av.L))
for _, n := range av.NS {
innerRV := reflect.New(rv.Type().Elem()).Elem()
if err := unmarshalReflect(&dynamodb.AttributeValue{N: n}, innerRV); err != nil {
return err
}
slicev = reflect.Append(slicev, innerRV)
}
rv.Set(slicev)
return nil
}
return errors.New("dynamo: unmarshal slice: B, L, BS, SS, NS are nil")
}
// intersect returns the common elements in the given sets, l1 and l2. l1 and
// l2 must be of the same type and may be either arrays or slices.
func intersect(l1, l2 interface{}) (interface{}, error) {
if l1 == nil || l2 == nil {
return make([]interface{}, 0), nil
}
l1v := reflect.ValueOf(l1)
l2v := reflect.ValueOf(l2)
switch l1v.Kind() {
case reflect.Array, reflect.Slice:
switch l2v.Kind() {
case reflect.Array, reflect.Slice:
r := reflect.MakeSlice(l1v.Type(), 0, 0)
for i := 0; i < l1v.Len(); i++ {
l1vv := l1v.Index(i)
for j := 0; j < l2v.Len(); j++ {
l2vv := l2v.Index(j)
switch l1vv.Kind() {
case reflect.String:
if l1vv.Type() == l2vv.Type() &&
l1vv.String() == l2vv.String() &&
!in(r.Interface(), l2vv.Interface()) {
r = reflect.Append(r, l2vv)
}
case reflect.Int, reflect.Int8,
reflect.Int16, reflect.Int32, reflect.Int64:
switch l2vv.Kind() {
case reflect.Int, reflect.Int8,
reflect.Int16, reflect.Int32, reflect.Int64:
if l1vv.Int() == l2vv.Int() &&
!in(r.Interface(), l2vv.Interface()) {
r = reflect.Append(r, l2vv)
}
}
case reflect.Float32, reflect.Float64:
switch l2vv.Kind() {
case reflect.Float32, reflect.Float64:
if l1vv.Float() == l2vv.Float() &&
!in(r.Interface(), l2vv.Interface()) {
r = reflect.Append(r, l2vv)
}
}
}
}
}
return r.Interface(), nil
default:
return nil, errors.New(
"can't iterate over " + reflect.ValueOf(l2).Type().String())
}
default:
return nil, errors.New(
"can't iterate over " + reflect.ValueOf(l1).Type().String())
}
}
func (d *decodeState) sliceValue(v reflect.Value, s string) {
//fmt.Printf(":SLICE(%s, %s)\n", v.Kind(), s)
switch v.Type().Elem().Kind() {
case reflect.String:
v.Set(reflect.Append(v, reflect.ValueOf(s)))
case reflect.Bool:
v.Set(reflect.Append(v, reflect.ValueOf(boolValue(s))))
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
// Hardcoding of []int temporarily
n, err := strconv.ParseInt(s, 10, 64)
if err != nil {
d.saveError(&IniError{d.lineNum, d.line, "Invalid int"})
return
}
n1 := reflect.ValueOf(n)
n2 := n1.Convert(v.Type().Elem())
v.Set(reflect.Append(v, n2))
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
n, err := strconv.ParseUint(s, 10, 64)
if err != nil {
d.saveError(&IniError{d.lineNum, d.line, "Invalid uint"})
return
}
n1 := reflect.ValueOf(n)
n2 := n1.Convert(v.Type().Elem())
v.Set(reflect.Append(v, n2))
case reflect.Float32, reflect.Float64:
n, err := strconv.ParseFloat(s, 64)
if err != nil {
d.saveError(&IniError{d.lineNum, d.line, "Invalid float"})
return
}
n1 := reflect.ValueOf(n)
n2 := n1.Convert(v.Type().Elem())
v.Set(reflect.Append(v, n2))
default:
d.saveError(&IniError{d.lineNum, d.line, fmt.Sprintf("Can't set value in array of type %s",
v.Type().Elem().Kind())})
}
}
// Handle decoding of slices
func (de *decoder) slice(slval reflect.Value, vb []byte) error {
// Find the element type, and create a temporary instance of it.
eltype := slval.Type().Elem()
val := reflect.New(eltype).Elem()
// Decide on the wiretype to use for decoding.
var wiretype int
switch eltype.Kind() {
case reflect.Bool, reflect.Int32, reflect.Int64,
reflect.Uint32, reflect.Uint64:
switch eltype {
case sfixed32type:
wiretype = 5 // Packed 32-bit representation
case sfixed64type:
wiretype = 1 // Packed 64-bit representation
case ufixed32type:
wiretype = 5 // Packed 32-bit representation
case ufixed64type:
wiretype = 1 // Packed 64-bit representation
default:
wiretype = 0 // Packed varint representation
}
case reflect.Float32:
wiretype = 5 // Packed 32-bit representation
case reflect.Float64:
wiretype = 1 // Packed 64-bit representation
case reflect.Uint8: // Unpacked byte-slice
slval.SetBytes(vb)
return nil
default: // Other unpacked repeated types
// Just unpack and append one value from vb.
if err := de.putvalue(2, val, 0, vb); err != nil {
return err
}
slval.Set(reflect.Append(slval, val))
return nil
}
// Decode packed values from the buffer and append them to the slice.
for len(vb) > 0 {
rem, err := de.value(wiretype, vb, val)
if err != nil {
return err
}
slval.Set(reflect.Append(slval, val))
vb = rem
}
return nil
}
func sliceNextElemValue(v reflect.Value) reflect.Value {
if v.Type().Elem().Kind() == reflect.Ptr {
elem := reflect.New(v.Type().Elem().Elem())
v.Set(reflect.Append(v, elem))
return elem.Elem()
}
elem := reflect.New(v.Type().Elem()).Elem()
v.Set(reflect.Append(v, elem))
elem = v.Index(v.Len() - 1)
return elem
}
func iterateSlice(v reflect.Value) reflect.Value {
result := reflect.MakeSlice(v.Type(), 0, v.Len())
for i := 0; i < v.Len(); i++ {
value := v.Index(i)
vi := copyStruct(value)
if value.Kind() == reflect.Ptr {
result = reflect.Append(result, vi.Addr())
} else {
result = reflect.Append(result, vi)
}
}
return result
}
func (coll *sliceCollection) newValue() reflect.Value {
switch coll.v.Type().Elem().Kind() {
case reflect.Ptr:
elem := reflect.New(coll.v.Type().Elem().Elem())
coll.v.Set(reflect.Append(coll.v, elem))
return elem.Elem()
case reflect.Struct:
elem := reflect.New(coll.v.Type().Elem()).Elem()
coll.v.Set(reflect.Append(coll.v, elem))
elem = coll.v.Index(coll.v.Len() - 1)
return elem
default:
panic("not reached")
}
}
// Union outputs a collection that holds unique values of in and values collections
func Union(in Collection, values Collection, out Pointer) error {
if !IsCollection(in) {
return NotACollection("Value %v is not a collection", in)
}
if !IsCollection(values) {
return NotACollection("Value %v is not a collection", values)
}
if !IsPointer(out) {
return NotPointer("Value %v is not a pointer", out)
}
inVal := reflect.ValueOf(in)
valuesVal := reflect.ValueOf(values)
outVal := reflect.ValueOf(out)
if a, b := inVal.Type(), valuesVal.Type(); a != b {
return NotAssignable("Collection of type '%v' doesn't match type ", a, b)
}
if a, c := inVal.Type(), outVal.Elem().Type(); !a.AssignableTo(c) {
return NotAssignable("Collection of type '%v' is not assignable to output of type '%v'", a, c)
}
for i := 0; i < valuesVal.Len(); i++ {
inVal = reflect.Append(inVal, valuesVal.Index(i))
}
if err := Unique(inVal.Interface(), out); err != nil {
return err
}
return nil
}
// Unique filters remove duplicate values from an array
func Unique(in Collection, out Pointer) error {
if !IsCollection(in) {
return NotACollection("Value '%v' is not a collection", in)
}
if !IsPointer(out) {
return NotPointer("Value '%v' is not a pointer", out)
}
inValue := reflect.ValueOf(in)
inType := inValue.Type()
outValue := reflect.ValueOf(out)
outType := outValue.Type()
if !inType.AssignableTo(outType.Elem()) {
return NotAssignable("Value in of type '%v' can't be assigned to out of type '%v' ", inType, outType.Elem())
}
newCollection := reflect.MakeSlice(inType, 0, 0)
inLen := inValue.Len()
for i := 0; i < inLen; i++ {
if index, err := IndexOf(newCollection.Interface(), inValue.Index(i).Interface(), 0); err != nil {
return err
} else if index == -1 {
newCollection = reflect.Append(newCollection, inValue.Index(i))
}
}
outValue.Elem().Set(newCollection)
return nil
}
func sliceAppend(L *lua.State) int {
slice, _ := valueOfProxy(L, 1)
val := luaToGoValue(L, nil, 2)
newslice := reflect.Append(slice, val)
makeValueProxy(L, newslice, cSLICE_META)
return 1
}
