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package optdec
import (
"reflect"
"unsafe"
"github.com/bytedance/sonic/internal/rt"
)
type sliceDecoder struct {
elemType *rt.GoType
elemDec decFunc
typ reflect.Type
}
var (
emptyPtr = &struct{}{}
)
func (d *sliceDecoder) FromDom(vp unsafe.Pointer, node Node, ctx *context) error {
if node.IsNull() {
*(*rt.GoSlice)(vp) = rt.GoSlice{}
return nil
}
arr, ok := node.AsArr()
if !ok {
return error_mismatch(node, ctx, d.typ)
}
slice := rt.MakeSlice(vp, d.elemType, arr.Len())
elems := slice.Ptr
next := arr.Children()
var gerr error
for i := 0; i < arr.Len(); i++ {
val := NewNode(next)
elem := unsafe.Pointer(uintptr(elems) + uintptr(i)*d.elemType.Size)
err := d.elemDec.FromDom(elem, val, ctx)
if gerr == nil && err != nil {
gerr = err
}
next = val.Next()
}
*(*rt.GoSlice)(vp) = *slice
return gerr
}
type arrayDecoder struct {
len int
elemType *rt.GoType
elemDec decFunc
typ reflect.Type
}
//go:nocheckptr
func (d *arrayDecoder) FromDom(vp unsafe.Pointer, node Node, ctx *context) error {
if node.IsNull() {
return nil
}
arr, ok := node.AsArr()
if !ok {
return error_mismatch(node, ctx, d.typ)
}
next := arr.Children()
i := 0
var gerr error
for ; i < d.len && i < arr.Len(); i++ {
elem := unsafe.Pointer(uintptr(vp) + uintptr(i)*d.elemType.Size)
val := NewNode(next)
err := d.elemDec.FromDom(elem, val, ctx)
if gerr == nil && err != nil {
gerr = err
}
next = val.Next()
}
/* zero rest of array */
ptr := unsafe.Pointer(uintptr(vp) + uintptr(i)*d.elemType.Size)
n := uintptr(d.len-i) * d.elemType.Size
rt.ClearMemory(d.elemType, ptr, n)
return gerr
}
type sliceEfaceDecoder struct {
}
func (d *sliceEfaceDecoder) FromDom(vp unsafe.Pointer, node Node, ctx *context) error {
if node.IsNull() {
*(*rt.GoSlice)(vp) = rt.GoSlice{}
return nil
}
return node.AsSliceEface(ctx, vp)
}
type sliceI32Decoder struct {
}
func (d *sliceI32Decoder) FromDom(vp unsafe.Pointer, node Node, ctx *context) error {
if node.IsNull() {
*(*rt.GoSlice)(vp) = rt.GoSlice{}
return nil
}
return node.AsSliceI32(ctx, vp)
}
type sliceI64Decoder struct {
}
func (d *sliceI64Decoder) FromDom(vp unsafe.Pointer, node Node, ctx *context) error {
if node.IsNull() {
*(*rt.GoSlice)(vp) = rt.GoSlice{}
return nil
}
return node.AsSliceI64(ctx, vp)
}
type sliceU32Decoder struct {
}
func (d *sliceU32Decoder) FromDom(vp unsafe.Pointer, node Node, ctx *context) error {
if node.IsNull() {
*(*rt.GoSlice)(vp) = rt.GoSlice{}
return nil
}
return node.AsSliceU32(ctx, vp)
}
type sliceU64Decoder struct {
}
func (d *sliceU64Decoder) FromDom(vp unsafe.Pointer, node Node, ctx *context) error {
if node.IsNull() {
*(*rt.GoSlice)(vp) = rt.GoSlice{}
return nil
}
return node.AsSliceU64(ctx, vp)
}
type sliceStringDecoder struct {
}
func (d *sliceStringDecoder) FromDom(vp unsafe.Pointer, node Node, ctx *context) error {
if node.IsNull() {
*(*rt.GoSlice)(vp) = rt.GoSlice{}
return nil
}
return node.AsSliceString(ctx, vp)
}
type sliceBytesDecoder struct {
}
func (d *sliceBytesDecoder) FromDom(vp unsafe.Pointer, node Node, ctx *context) error {
if node.IsNull() {
*(*rt.GoSlice)(vp) = rt.GoSlice{}
return nil
}
s, err := node.AsSliceBytes(ctx)
if err != nil {
return err
}
*(*[]byte)(vp) = s
return nil
}
type sliceBytesUnmarshalerDecoder struct {
elemType *rt.GoType
elemDec decFunc
typ reflect.Type
}
func (d *sliceBytesUnmarshalerDecoder) FromDom(vp unsafe.Pointer, node Node, ctx *context) error {
if node.IsNull() {
*(*rt.GoSlice)(vp) = rt.GoSlice{}
return nil
}
/* parse JSON string into `[]byte` */
if node.IsStr() {
slice, err := node.AsSliceBytes(ctx)
if err != nil {
return err
}
*(*[]byte)(vp) = slice
return nil
}
/* parse JSON array into `[]byte` */
arr, ok := node.AsArr()
if !ok {
return error_mismatch(node, ctx, d.typ)
}
slice := rt.MakeSlice(vp, d.elemType, arr.Len())
elems := slice.Ptr
var gerr error
next := arr.Children()
for i := 0; i < arr.Len(); i++ {
child := NewNode(next)
elem := unsafe.Pointer(uintptr(elems) + uintptr(i)*d.elemType.Size)
err := d.elemDec.FromDom(elem, child, ctx)
if gerr == nil && err != nil {
gerr = err
}
next = child.Next()
}
*(*rt.GoSlice)(vp) = *slice
return gerr
}
|
