mirror of
https://github.com/robertkrimen/otto
synced 2025-10-26 20:28:49 +08:00
682 lines
19 KiB
Go
682 lines
19 KiB
Go
package otto
|
|
|
|
import (
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// Array
|
|
|
|
func builtinArray(call FunctionCall) Value {
|
|
return toValue_object(builtinNewArrayNative(call.runtime, call.ArgumentList))
|
|
}
|
|
|
|
func builtinNewArray(self *_object, argumentList []Value) Value {
|
|
return toValue_object(builtinNewArrayNative(self.runtime, argumentList))
|
|
}
|
|
|
|
func builtinNewArrayNative(runtime *_runtime, argumentList []Value) *_object {
|
|
if len(argumentList) == 1 {
|
|
firstArgument := argumentList[0]
|
|
if firstArgument.IsNumber() {
|
|
return runtime.newArray(arrayUint32(runtime, firstArgument))
|
|
}
|
|
}
|
|
return runtime.newArrayOf(argumentList)
|
|
}
|
|
|
|
func builtinArray_toString(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
join := thisObject.get("join")
|
|
if join.isCallable() {
|
|
join := join._object()
|
|
return join.call(call.This, call.ArgumentList, false, nativeFrame)
|
|
}
|
|
return builtinObject_toString(call)
|
|
}
|
|
|
|
func builtinArray_toLocaleString(call FunctionCall) Value {
|
|
separator := ","
|
|
thisObject := call.thisObject()
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
if length == 0 {
|
|
return toValue_string("")
|
|
}
|
|
stringList := make([]string, 0, length)
|
|
for index := int64(0); index < length; index += 1 {
|
|
value := thisObject.get(arrayIndexToString(index))
|
|
stringValue := ""
|
|
switch value.kind {
|
|
case valueEmpty, valueUndefined, valueNull:
|
|
default:
|
|
object := call.runtime.toObject(value)
|
|
toLocaleString := object.get("toLocaleString")
|
|
if !toLocaleString.isCallable() {
|
|
panic(call.runtime.panicTypeError())
|
|
}
|
|
stringValue = toLocaleString.call(call.runtime, toValue_object(object)).string()
|
|
}
|
|
stringList = append(stringList, stringValue)
|
|
}
|
|
return toValue_string(strings.Join(stringList, separator))
|
|
}
|
|
|
|
func builtinArray_concat(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
valueArray := []Value{}
|
|
source := append([]Value{toValue_object(thisObject)}, call.ArgumentList...)
|
|
for _, item := range source {
|
|
switch item.kind {
|
|
case valueObject:
|
|
object := item._object()
|
|
if isArray(object) {
|
|
length := object.get("length").number().int64
|
|
for index := int64(0); index < length; index += 1 {
|
|
name := strconv.FormatInt(index, 10)
|
|
if object.hasProperty(name) {
|
|
valueArray = append(valueArray, object.get(name))
|
|
} else {
|
|
valueArray = append(valueArray, Value{})
|
|
}
|
|
}
|
|
continue
|
|
}
|
|
fallthrough
|
|
default:
|
|
valueArray = append(valueArray, item)
|
|
}
|
|
}
|
|
return toValue_object(call.runtime.newArrayOf(valueArray))
|
|
}
|
|
|
|
func builtinArray_shift(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
if 0 == length {
|
|
thisObject.put("length", toValue_int64(0), true)
|
|
return Value{}
|
|
}
|
|
first := thisObject.get("0")
|
|
for index := int64(1); index < length; index++ {
|
|
from := arrayIndexToString(index)
|
|
to := arrayIndexToString(index - 1)
|
|
if thisObject.hasProperty(from) {
|
|
thisObject.put(to, thisObject.get(from), true)
|
|
} else {
|
|
thisObject.delete(to, true)
|
|
}
|
|
}
|
|
thisObject.delete(arrayIndexToString(length-1), true)
|
|
thisObject.put("length", toValue_int64(length-1), true)
|
|
return first
|
|
}
|
|
|
|
func builtinArray_push(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
itemList := call.ArgumentList
|
|
index := int64(toUint32(thisObject.get("length")))
|
|
for len(itemList) > 0 {
|
|
thisObject.put(arrayIndexToString(index), itemList[0], true)
|
|
itemList = itemList[1:]
|
|
index += 1
|
|
}
|
|
length := toValue_int64(index)
|
|
thisObject.put("length", length, true)
|
|
return length
|
|
}
|
|
|
|
func builtinArray_pop(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
if 0 == length {
|
|
thisObject.put("length", toValue_uint32(0), true)
|
|
return Value{}
|
|
}
|
|
last := thisObject.get(arrayIndexToString(length - 1))
|
|
thisObject.delete(arrayIndexToString(length-1), true)
|
|
thisObject.put("length", toValue_int64(length-1), true)
|
|
return last
|
|
}
|
|
|
|
func builtinArray_join(call FunctionCall) Value {
|
|
separator := ","
|
|
{
|
|
argument := call.Argument(0)
|
|
if argument.IsDefined() {
|
|
separator = argument.string()
|
|
}
|
|
}
|
|
thisObject := call.thisObject()
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
if length == 0 {
|
|
return toValue_string("")
|
|
}
|
|
stringList := make([]string, 0, length)
|
|
for index := int64(0); index < length; index += 1 {
|
|
value := thisObject.get(arrayIndexToString(index))
|
|
stringValue := ""
|
|
switch value.kind {
|
|
case valueEmpty, valueUndefined, valueNull:
|
|
default:
|
|
stringValue = value.string()
|
|
}
|
|
stringList = append(stringList, stringValue)
|
|
}
|
|
return toValue_string(strings.Join(stringList, separator))
|
|
}
|
|
|
|
func builtinArray_splice(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
|
|
start := valueToRangeIndex(call.Argument(0), length, false)
|
|
deleteCount := valueToRangeIndex(call.Argument(1), int64(length)-start, true)
|
|
valueArray := make([]Value, deleteCount)
|
|
|
|
for index := int64(0); index < deleteCount; index++ {
|
|
indexString := arrayIndexToString(int64(start + index))
|
|
if thisObject.hasProperty(indexString) {
|
|
valueArray[index] = thisObject.get(indexString)
|
|
}
|
|
}
|
|
|
|
// 0, <1, 2, 3, 4>, 5, 6, 7
|
|
// a, b
|
|
// length 8 - delete 4 @ start 1
|
|
|
|
itemList := []Value{}
|
|
itemCount := int64(len(call.ArgumentList))
|
|
if itemCount > 2 {
|
|
itemCount -= 2 // Less the first two arguments
|
|
itemList = call.ArgumentList[2:]
|
|
} else {
|
|
itemCount = 0
|
|
}
|
|
if itemCount < deleteCount {
|
|
// The Object/Array is shrinking
|
|
stop := int64(length) - deleteCount
|
|
// The new length of the Object/Array before
|
|
// appending the itemList remainder
|
|
// Stopping at the lower bound of the insertion:
|
|
// Move an item from the after the deleted portion
|
|
// to a position after the inserted portion
|
|
for index := start; index < stop; index++ {
|
|
from := arrayIndexToString(index + deleteCount) // Position just after deletion
|
|
to := arrayIndexToString(index + itemCount) // Position just after splice (insertion)
|
|
if thisObject.hasProperty(from) {
|
|
thisObject.put(to, thisObject.get(from), true)
|
|
} else {
|
|
thisObject.delete(to, true)
|
|
}
|
|
}
|
|
// Delete off the end
|
|
// We don't bother to delete below <stop + itemCount> (if any) since those
|
|
// will be overwritten anyway
|
|
for index := int64(length); index > (stop + itemCount); index-- {
|
|
thisObject.delete(arrayIndexToString(index-1), true)
|
|
}
|
|
} else if itemCount > deleteCount {
|
|
// The Object/Array is growing
|
|
// The itemCount is greater than the deleteCount, so we do
|
|
// not have to worry about overwriting what we should be moving
|
|
// ---
|
|
// Starting from the upper bound of the deletion:
|
|
// Move an item from the after the deleted portion
|
|
// to a position after the inserted portion
|
|
for index := int64(length) - deleteCount; index > start; index-- {
|
|
from := arrayIndexToString(index + deleteCount - 1)
|
|
to := arrayIndexToString(index + itemCount - 1)
|
|
if thisObject.hasProperty(from) {
|
|
thisObject.put(to, thisObject.get(from), true)
|
|
} else {
|
|
thisObject.delete(to, true)
|
|
}
|
|
}
|
|
}
|
|
|
|
for index := int64(0); index < itemCount; index++ {
|
|
thisObject.put(arrayIndexToString(index+start), itemList[index], true)
|
|
}
|
|
thisObject.put("length", toValue_int64(int64(length)+itemCount-deleteCount), true)
|
|
|
|
return toValue_object(call.runtime.newArrayOf(valueArray))
|
|
}
|
|
|
|
func builtinArray_slice(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
start, end := rangeStartEnd(call.ArgumentList, length, false)
|
|
|
|
if start >= end {
|
|
// Always an empty array
|
|
return toValue_object(call.runtime.newArray(0))
|
|
}
|
|
sliceLength := end - start
|
|
sliceValueArray := make([]Value, sliceLength)
|
|
|
|
for index := int64(0); index < sliceLength; index++ {
|
|
from := arrayIndexToString(index + start)
|
|
if thisObject.hasProperty(from) {
|
|
sliceValueArray[index] = thisObject.get(from)
|
|
}
|
|
}
|
|
|
|
return toValue_object(call.runtime.newArrayOf(sliceValueArray))
|
|
}
|
|
|
|
func builtinArray_unshift(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
itemList := call.ArgumentList
|
|
itemCount := int64(len(itemList))
|
|
|
|
for index := length; index > 0; index-- {
|
|
from := arrayIndexToString(index - 1)
|
|
to := arrayIndexToString(index + itemCount - 1)
|
|
if thisObject.hasProperty(from) {
|
|
thisObject.put(to, thisObject.get(from), true)
|
|
} else {
|
|
thisObject.delete(to, true)
|
|
}
|
|
}
|
|
|
|
for index := int64(0); index < itemCount; index++ {
|
|
thisObject.put(arrayIndexToString(index), itemList[index], true)
|
|
}
|
|
|
|
newLength := toValue_int64(length + itemCount)
|
|
thisObject.put("length", newLength, true)
|
|
return newLength
|
|
}
|
|
|
|
func builtinArray_reverse(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
|
|
lower := struct {
|
|
name string
|
|
index int64
|
|
exists bool
|
|
}{}
|
|
upper := lower
|
|
|
|
lower.index = 0
|
|
middle := length / 2 // Division will floor
|
|
|
|
for lower.index != middle {
|
|
lower.name = arrayIndexToString(lower.index)
|
|
upper.index = length - lower.index - 1
|
|
upper.name = arrayIndexToString(upper.index)
|
|
|
|
lower.exists = thisObject.hasProperty(lower.name)
|
|
upper.exists = thisObject.hasProperty(upper.name)
|
|
|
|
if lower.exists && upper.exists {
|
|
lowerValue := thisObject.get(lower.name)
|
|
upperValue := thisObject.get(upper.name)
|
|
thisObject.put(lower.name, upperValue, true)
|
|
thisObject.put(upper.name, lowerValue, true)
|
|
} else if !lower.exists && upper.exists {
|
|
value := thisObject.get(upper.name)
|
|
thisObject.delete(upper.name, true)
|
|
thisObject.put(lower.name, value, true)
|
|
} else if lower.exists && !upper.exists {
|
|
value := thisObject.get(lower.name)
|
|
thisObject.delete(lower.name, true)
|
|
thisObject.put(upper.name, value, true)
|
|
} else {
|
|
// Nothing happens.
|
|
}
|
|
|
|
lower.index += 1
|
|
}
|
|
|
|
return call.This
|
|
}
|
|
|
|
func sortCompare(thisObject *_object, index0, index1 uint, compare *_object) int {
|
|
j := struct {
|
|
name string
|
|
exists bool
|
|
defined bool
|
|
value string
|
|
}{}
|
|
k := j
|
|
j.name = arrayIndexToString(int64(index0))
|
|
j.exists = thisObject.hasProperty(j.name)
|
|
k.name = arrayIndexToString(int64(index1))
|
|
k.exists = thisObject.hasProperty(k.name)
|
|
|
|
if !j.exists && !k.exists {
|
|
return 0
|
|
} else if !j.exists {
|
|
return 1
|
|
} else if !k.exists {
|
|
return -1
|
|
}
|
|
|
|
x := thisObject.get(j.name)
|
|
y := thisObject.get(k.name)
|
|
j.defined = x.IsDefined()
|
|
k.defined = y.IsDefined()
|
|
|
|
if !j.defined && !k.defined {
|
|
return 0
|
|
} else if !j.defined {
|
|
return 1
|
|
} else if !k.defined {
|
|
return -1
|
|
}
|
|
|
|
if compare == nil {
|
|
j.value = x.string()
|
|
k.value = y.string()
|
|
|
|
if j.value == k.value {
|
|
return 0
|
|
} else if j.value < k.value {
|
|
return -1
|
|
}
|
|
|
|
return 1
|
|
}
|
|
|
|
return int(toInt32(compare.call(Value{}, []Value{x, y}, false, nativeFrame)))
|
|
}
|
|
|
|
func arraySortSwap(thisObject *_object, index0, index1 uint) {
|
|
|
|
j := struct {
|
|
name string
|
|
exists bool
|
|
}{}
|
|
k := j
|
|
|
|
j.name = arrayIndexToString(int64(index0))
|
|
j.exists = thisObject.hasProperty(j.name)
|
|
k.name = arrayIndexToString(int64(index1))
|
|
k.exists = thisObject.hasProperty(k.name)
|
|
|
|
if j.exists && k.exists {
|
|
jValue := thisObject.get(j.name)
|
|
kValue := thisObject.get(k.name)
|
|
thisObject.put(j.name, kValue, true)
|
|
thisObject.put(k.name, jValue, true)
|
|
} else if !j.exists && k.exists {
|
|
value := thisObject.get(k.name)
|
|
thisObject.delete(k.name, true)
|
|
thisObject.put(j.name, value, true)
|
|
} else if j.exists && !k.exists {
|
|
value := thisObject.get(j.name)
|
|
thisObject.delete(j.name, true)
|
|
thisObject.put(k.name, value, true)
|
|
} else {
|
|
// Nothing happens.
|
|
}
|
|
}
|
|
|
|
func arraySortQuickPartition(thisObject *_object, left, right, pivot uint, compare *_object) (uint, uint) {
|
|
arraySortSwap(thisObject, pivot, right) // Right is now the pivot value
|
|
cursor := left
|
|
cursor2 := left
|
|
for index := left; index < right; index++ {
|
|
comparison := sortCompare(thisObject, index, right, compare) // Compare to the pivot value
|
|
if comparison < 0 {
|
|
arraySortSwap(thisObject, index, cursor)
|
|
if cursor < cursor2 {
|
|
arraySortSwap(thisObject, index, cursor2)
|
|
}
|
|
cursor += 1
|
|
cursor2 += 1
|
|
} else if comparison == 0 {
|
|
arraySortSwap(thisObject, index, cursor2)
|
|
cursor2 += 1
|
|
}
|
|
}
|
|
arraySortSwap(thisObject, cursor2, right)
|
|
return cursor, cursor2
|
|
}
|
|
|
|
func arraySortQuickSort(thisObject *_object, left, right uint, compare *_object) {
|
|
if left < right {
|
|
middle := left + (right-left)/2
|
|
pivot, pivot2 := arraySortQuickPartition(thisObject, left, right, middle, compare)
|
|
if pivot > 0 {
|
|
arraySortQuickSort(thisObject, left, pivot-1, compare)
|
|
}
|
|
arraySortQuickSort(thisObject, pivot2+1, right, compare)
|
|
}
|
|
}
|
|
|
|
func builtinArray_sort(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
length := uint(toUint32(thisObject.get("length")))
|
|
compareValue := call.Argument(0)
|
|
compare := compareValue._object()
|
|
if compareValue.IsUndefined() {
|
|
} else if !compareValue.isCallable() {
|
|
panic(call.runtime.panicTypeError())
|
|
}
|
|
if length > 1 {
|
|
arraySortQuickSort(thisObject, 0, length-1, compare)
|
|
}
|
|
return call.This
|
|
}
|
|
|
|
func builtinArray_isArray(call FunctionCall) Value {
|
|
return toValue_bool(isArray(call.Argument(0)._object()))
|
|
}
|
|
|
|
func builtinArray_indexOf(call FunctionCall) Value {
|
|
thisObject, matchValue := call.thisObject(), call.Argument(0)
|
|
if length := int64(toUint32(thisObject.get("length"))); length > 0 {
|
|
index := int64(0)
|
|
if len(call.ArgumentList) > 1 {
|
|
index = call.Argument(1).number().int64
|
|
}
|
|
if index < 0 {
|
|
if index += length; index < 0 {
|
|
index = 0
|
|
}
|
|
} else if index >= length {
|
|
index = -1
|
|
}
|
|
for ; index >= 0 && index < length; index++ {
|
|
name := arrayIndexToString(int64(index))
|
|
if !thisObject.hasProperty(name) {
|
|
continue
|
|
}
|
|
value := thisObject.get(name)
|
|
if strictEqualityComparison(matchValue, value) {
|
|
return toValue_uint32(uint32(index))
|
|
}
|
|
}
|
|
}
|
|
return toValue_int(-1)
|
|
}
|
|
|
|
func builtinArray_lastIndexOf(call FunctionCall) Value {
|
|
thisObject, matchValue := call.thisObject(), call.Argument(0)
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
index := length - 1
|
|
if len(call.ArgumentList) > 1 {
|
|
index = call.Argument(1).number().int64
|
|
}
|
|
if 0 > index {
|
|
index += length
|
|
}
|
|
if index > length {
|
|
index = length - 1
|
|
} else if 0 > index {
|
|
return toValue_int(-1)
|
|
}
|
|
for ; index >= 0; index-- {
|
|
name := arrayIndexToString(int64(index))
|
|
if !thisObject.hasProperty(name) {
|
|
continue
|
|
}
|
|
value := thisObject.get(name)
|
|
if strictEqualityComparison(matchValue, value) {
|
|
return toValue_uint32(uint32(index))
|
|
}
|
|
}
|
|
return toValue_int(-1)
|
|
}
|
|
|
|
func builtinArray_every(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
this := toValue_object(thisObject)
|
|
if iterator := call.Argument(0); iterator.isCallable() {
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
callThis := call.Argument(1)
|
|
for index := int64(0); index < length; index++ {
|
|
if key := arrayIndexToString(index); thisObject.hasProperty(key) {
|
|
if value := thisObject.get(key); iterator.call(call.runtime, callThis, value, toValue_int64(index), this).bool() {
|
|
continue
|
|
}
|
|
return falseValue
|
|
}
|
|
}
|
|
return trueValue
|
|
}
|
|
panic(call.runtime.panicTypeError())
|
|
}
|
|
|
|
func builtinArray_some(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
this := toValue_object(thisObject)
|
|
if iterator := call.Argument(0); iterator.isCallable() {
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
callThis := call.Argument(1)
|
|
for index := int64(0); index < length; index++ {
|
|
if key := arrayIndexToString(index); thisObject.hasProperty(key) {
|
|
if value := thisObject.get(key); iterator.call(call.runtime, callThis, value, toValue_int64(index), this).bool() {
|
|
return trueValue
|
|
}
|
|
}
|
|
}
|
|
return falseValue
|
|
}
|
|
panic(call.runtime.panicTypeError())
|
|
}
|
|
|
|
func builtinArray_forEach(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
this := toValue_object(thisObject)
|
|
if iterator := call.Argument(0); iterator.isCallable() {
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
callThis := call.Argument(1)
|
|
for index := int64(0); index < length; index++ {
|
|
if key := arrayIndexToString(index); thisObject.hasProperty(key) {
|
|
iterator.call(call.runtime, callThis, thisObject.get(key), toValue_int64(index), this)
|
|
}
|
|
}
|
|
return Value{}
|
|
}
|
|
panic(call.runtime.panicTypeError())
|
|
}
|
|
|
|
func builtinArray_map(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
this := toValue_object(thisObject)
|
|
if iterator := call.Argument(0); iterator.isCallable() {
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
callThis := call.Argument(1)
|
|
values := make([]Value, length)
|
|
for index := int64(0); index < length; index++ {
|
|
if key := arrayIndexToString(index); thisObject.hasProperty(key) {
|
|
values[index] = iterator.call(call.runtime, callThis, thisObject.get(key), index, this)
|
|
} else {
|
|
values[index] = Value{}
|
|
}
|
|
}
|
|
return toValue_object(call.runtime.newArrayOf(values))
|
|
}
|
|
panic(call.runtime.panicTypeError())
|
|
}
|
|
|
|
func builtinArray_filter(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
this := toValue_object(thisObject)
|
|
if iterator := call.Argument(0); iterator.isCallable() {
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
callThis := call.Argument(1)
|
|
values := make([]Value, 0)
|
|
for index := int64(0); index < length; index++ {
|
|
if key := arrayIndexToString(index); thisObject.hasProperty(key) {
|
|
value := thisObject.get(key)
|
|
if iterator.call(call.runtime, callThis, value, index, this).bool() {
|
|
values = append(values, value)
|
|
}
|
|
}
|
|
}
|
|
return toValue_object(call.runtime.newArrayOf(values))
|
|
}
|
|
panic(call.runtime.panicTypeError())
|
|
}
|
|
|
|
func builtinArray_reduce(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
this := toValue_object(thisObject)
|
|
if iterator := call.Argument(0); iterator.isCallable() {
|
|
initial := len(call.ArgumentList) > 1
|
|
start := call.Argument(1)
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
index := int64(0)
|
|
if length > 0 || initial {
|
|
var accumulator Value
|
|
if !initial {
|
|
for ; index < length; index++ {
|
|
if key := arrayIndexToString(index); thisObject.hasProperty(key) {
|
|
accumulator = thisObject.get(key)
|
|
index++
|
|
break
|
|
}
|
|
}
|
|
} else {
|
|
accumulator = start
|
|
}
|
|
for ; index < length; index++ {
|
|
if key := arrayIndexToString(index); thisObject.hasProperty(key) {
|
|
accumulator = iterator.call(call.runtime, Value{}, accumulator, thisObject.get(key), key, this)
|
|
}
|
|
}
|
|
return accumulator
|
|
}
|
|
}
|
|
panic(call.runtime.panicTypeError())
|
|
}
|
|
|
|
func builtinArray_reduceRight(call FunctionCall) Value {
|
|
thisObject := call.thisObject()
|
|
this := toValue_object(thisObject)
|
|
if iterator := call.Argument(0); iterator.isCallable() {
|
|
initial := len(call.ArgumentList) > 1
|
|
start := call.Argument(1)
|
|
length := int64(toUint32(thisObject.get("length")))
|
|
if length > 0 || initial {
|
|
index := length - 1
|
|
var accumulator Value
|
|
if !initial {
|
|
for ; index >= 0; index-- {
|
|
if key := arrayIndexToString(index); thisObject.hasProperty(key) {
|
|
accumulator = thisObject.get(key)
|
|
index -= 1
|
|
break
|
|
}
|
|
}
|
|
} else {
|
|
accumulator = start
|
|
}
|
|
for ; index >= 0; index-- {
|
|
if key := arrayIndexToString(index); thisObject.hasProperty(key) {
|
|
accumulator = iterator.call(call.runtime, Value{}, accumulator, thisObject.get(key), key, this)
|
|
}
|
|
}
|
|
return accumulator
|
|
}
|
|
}
|
|
panic(call.runtime.panicTypeError())
|
|
}
|