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- package goja
- import (
- "math"
- "math/bits"
- "reflect"
- "strconv"
- "github.com/dop251/goja/unistring"
- )
- type objectGoSlice struct {
- baseObject
- data *[]interface{}
- lengthProp valueProperty
- }
- func (o *objectGoSlice) init() {
- o.baseObject.init()
- o.class = classArray
- o.prototype = o.val.runtime.global.ArrayPrototype
- o.lengthProp.writable = true
- o.extensible = true
- o.updateLen()
- o.baseObject._put("length", &o.lengthProp)
- }
- func (o *objectGoSlice) updateLen() {
- o.lengthProp.value = intToValue(int64(len(*o.data)))
- }
- func (o *objectGoSlice) getStr(name unistring.String, receiver Value) Value {
- var ownProp Value
- if idx := strToGoIdx(name); idx >= 0 && idx < len(*o.data) {
- v := (*o.data)[idx]
- ownProp = o.val.runtime.ToValue(v)
- } else if name == "length" {
- ownProp = &o.lengthProp
- }
- return o.getStrWithOwnProp(ownProp, name, receiver)
- }
- func (o *objectGoSlice) getIdx(idx valueInt, receiver Value) Value {
- if idx := int64(idx); idx >= 0 && idx < int64(len(*o.data)) {
- v := (*o.data)[idx]
- return o.val.runtime.ToValue(v)
- }
- if o.prototype != nil {
- if receiver == nil {
- return o.prototype.self.getIdx(idx, o.val)
- }
- return o.prototype.self.getIdx(idx, receiver)
- }
- return nil
- }
- func (o *objectGoSlice) getOwnPropStr(name unistring.String) Value {
- if idx := strToGoIdx(name); idx >= 0 {
- if idx < len(*o.data) {
- v := o.val.runtime.ToValue((*o.data)[idx])
- return &valueProperty{
- value: v,
- writable: true,
- enumerable: true,
- }
- }
- return nil
- }
- if name == "length" {
- return &o.lengthProp
- }
- return nil
- }
- func (o *objectGoSlice) getOwnPropIdx(idx valueInt) Value {
- if idx := int64(idx); idx >= 0 && idx < int64(len(*o.data)) {
- v := o.val.runtime.ToValue((*o.data)[idx])
- return &valueProperty{
- value: v,
- writable: true,
- enumerable: true,
- }
- }
- return nil
- }
- func (o *objectGoSlice) grow(size int) {
- oldcap := cap(*o.data)
- if oldcap < size {
- n := make([]interface{}, size, growCap(size, len(*o.data), oldcap))
- copy(n, *o.data)
- *o.data = n
- } else {
- tail := (*o.data)[len(*o.data):size]
- for k := range tail {
- tail[k] = nil
- }
- *o.data = (*o.data)[:size]
- }
- o.updateLen()
- }
- func (o *objectGoSlice) shrink(size int) {
- tail := (*o.data)[size:]
- for k := range tail {
- tail[k] = nil
- }
- *o.data = (*o.data)[:size]
- o.updateLen()
- }
- func (o *objectGoSlice) putIdx(idx int, v Value, throw bool) {
- if idx >= len(*o.data) {
- o.grow(idx + 1)
- }
- (*o.data)[idx] = v.Export()
- }
- func (o *objectGoSlice) putLength(v uint32, throw bool) bool {
- if bits.UintSize == 32 && v > math.MaxInt32 {
- panic(rangeError("Integer value overflows 32-bit int"))
- }
- newLen := int(v)
- curLen := len(*o.data)
- if newLen > curLen {
- o.grow(newLen)
- } else if newLen < curLen {
- o.shrink(newLen)
- }
- return true
- }
- func (o *objectGoSlice) setOwnIdx(idx valueInt, val Value, throw bool) bool {
- if i := toIntStrict(int64(idx)); i >= 0 {
- if i >= len(*o.data) {
- if res, ok := o._setForeignIdx(idx, nil, val, o.val, throw); ok {
- return res
- }
- }
- o.putIdx(i, val, throw)
- } else {
- name := idx.string()
- if res, ok := o._setForeignStr(name, nil, val, o.val, throw); !ok {
- o.val.runtime.typeErrorResult(throw, "Can't set property '%s' on Go slice", name)
- return false
- } else {
- return res
- }
- }
- return true
- }
- func (o *objectGoSlice) setOwnStr(name unistring.String, val Value, throw bool) bool {
- if idx := strToGoIdx(name); idx >= 0 {
- if idx >= len(*o.data) {
- if res, ok := o._setForeignStr(name, nil, val, o.val, throw); ok {
- return res
- }
- }
- o.putIdx(idx, val, throw)
- } else {
- if name == "length" {
- return o.putLength(o.val.runtime.toLengthUint32(val), throw)
- }
- if res, ok := o._setForeignStr(name, nil, val, o.val, throw); !ok {
- o.val.runtime.typeErrorResult(throw, "Can't set property '%s' on Go slice", name)
- return false
- } else {
- return res
- }
- }
- return true
- }
- func (o *objectGoSlice) setForeignIdx(idx valueInt, val, receiver Value, throw bool) (bool, bool) {
- return o._setForeignIdx(idx, trueValIfPresent(o.hasOwnPropertyIdx(idx)), val, receiver, throw)
- }
- func (o *objectGoSlice) setForeignStr(name unistring.String, val, receiver Value, throw bool) (bool, bool) {
- return o._setForeignStr(name, trueValIfPresent(o.hasOwnPropertyStr(name)), val, receiver, throw)
- }
- func (o *objectGoSlice) hasOwnPropertyIdx(idx valueInt) bool {
- if idx := int64(idx); idx >= 0 {
- return idx < int64(len(*o.data))
- }
- return false
- }
- func (o *objectGoSlice) hasOwnPropertyStr(name unistring.String) bool {
- if idx := strToIdx64(name); idx >= 0 {
- return idx < int64(len(*o.data))
- }
- return name == "length"
- }
- func (o *objectGoSlice) defineOwnPropertyIdx(idx valueInt, descr PropertyDescriptor, throw bool) bool {
- if i := toIntStrict(int64(idx)); i >= 0 {
- if !o.val.runtime.checkHostObjectPropertyDescr(idx.string(), descr, throw) {
- return false
- }
- val := descr.Value
- if val == nil {
- val = _undefined
- }
- o.putIdx(i, val, throw)
- return true
- }
- o.val.runtime.typeErrorResult(throw, "Cannot define property '%d' on a Go slice", idx)
- return false
- }
- func (o *objectGoSlice) defineOwnPropertyStr(name unistring.String, descr PropertyDescriptor, throw bool) bool {
- if idx := strToGoIdx(name); idx >= 0 {
- if !o.val.runtime.checkHostObjectPropertyDescr(name, descr, throw) {
- return false
- }
- val := descr.Value
- if val == nil {
- val = _undefined
- }
- o.putIdx(idx, val, throw)
- return true
- }
- if name == "length" {
- return o.val.runtime.defineArrayLength(&o.lengthProp, descr, o.putLength, throw)
- }
- o.val.runtime.typeErrorResult(throw, "Cannot define property '%s' on a Go slice", name)
- return false
- }
- func (o *objectGoSlice) toPrimitiveNumber() Value {
- return o.toPrimitiveString()
- }
- func (o *objectGoSlice) toPrimitiveString() Value {
- return o.val.runtime.arrayproto_join(FunctionCall{
- This: o.val,
- })
- }
- func (o *objectGoSlice) toPrimitive() Value {
- return o.toPrimitiveString()
- }
- func (o *objectGoSlice) _deleteIdx(idx int64) {
- if idx < int64(len(*o.data)) {
- (*o.data)[idx] = nil
- }
- }
- func (o *objectGoSlice) deleteStr(name unistring.String, throw bool) bool {
- if idx := strToIdx64(name); idx >= 0 {
- o._deleteIdx(idx)
- return true
- }
- return o.baseObject.deleteStr(name, throw)
- }
- func (o *objectGoSlice) deleteIdx(i valueInt, throw bool) bool {
- idx := int64(i)
- if idx >= 0 {
- o._deleteIdx(idx)
- }
- return true
- }
- type goslicePropIter struct {
- o *objectGoSlice
- idx, limit int
- }
- func (i *goslicePropIter) next() (propIterItem, iterNextFunc) {
- if i.idx < i.limit && i.idx < len(*i.o.data) {
- name := strconv.Itoa(i.idx)
- i.idx++
- return propIterItem{name: newStringValue(name), enumerable: _ENUM_TRUE}, i.next
- }
- return propIterItem{}, nil
- }
- func (o *objectGoSlice) iterateStringKeys() iterNextFunc {
- return (&goslicePropIter{
- o: o,
- limit: len(*o.data),
- }).next
- }
- func (o *objectGoSlice) stringKeys(_ bool, accum []Value) []Value {
- for i := range *o.data {
- accum = append(accum, asciiString(strconv.Itoa(i)))
- }
- return accum
- }
- func (o *objectGoSlice) export(*objectExportCtx) interface{} {
- return *o.data
- }
- func (o *objectGoSlice) exportType() reflect.Type {
- return reflectTypeArray
- }
- func (o *objectGoSlice) equal(other objectImpl) bool {
- if other, ok := other.(*objectGoSlice); ok {
- return o.data == other.data
- }
- return false
- }
- func (o *objectGoSlice) sortLen() int64 {
- return int64(len(*o.data))
- }
- func (o *objectGoSlice) sortGet(i int64) Value {
- return o.getIdx(valueInt(i), nil)
- }
- func (o *objectGoSlice) swap(i, j int64) {
- ii := valueInt(i)
- jj := valueInt(j)
- x := o.getIdx(ii, nil)
- y := o.getIdx(jj, nil)
- o.setOwnIdx(ii, y, false)
- o.setOwnIdx(jj, x, false)
- }
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