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package goja
import (
"fmt"
)
func (r *Runtime) builtin_Object(args []Value, proto *Object) *Object {
if len(args) > 0 {
arg := args[0]
if arg != _undefined && arg != _null {
return arg.ToObject(r)
}
}
return r.NewObject()
}
func (r *Runtime) object_getPrototypeOf(call FunctionCall) Value {
o := call.Argument(0).ToObject(r)
p := o.self.proto()
if p == nil {
return _null
}
return p
}
func (r *Runtime) object_getOwnPropertyDescriptor(call FunctionCall) Value {
obj := call.Argument(0).ToObject(r)
propName := call.Argument(1).String()
desc := obj.self.getOwnProp(propName)
if desc == nil {
return _undefined
}
var writable, configurable, enumerable, accessor bool
var get, set *Object
var value Value
if v, ok := desc.(*valueProperty); ok {
writable = v.writable
configurable = v.configurable
enumerable = v.enumerable
accessor = v.accessor
value = v.value
get = v.getterFunc
set = v.setterFunc
} else {
writable = true
configurable = true
enumerable = true
value = desc
}
ret := r.NewObject()
o := ret.self
if !accessor {
o.putStr("value", value, false)
o.putStr("writable", r.toBoolean(writable), false)
} else {
if get != nil {
o.putStr("get", get, false)
} else {
o.putStr("get", _undefined, false)
}
if set != nil {
o.putStr("set", set, false)
} else {
o.putStr("set", _undefined, false)
}
}
o.putStr("enumerable", r.toBoolean(enumerable), false)
o.putStr("configurable", r.toBoolean(configurable), false)
return ret
}
func (r *Runtime) object_getOwnPropertyNames(call FunctionCall) Value {
// ES6
obj := call.Argument(0).ToObject(r)
// obj := r.toObject(call.Argument(0))
var values []Value
for item, f := obj.self.enumerate(true, false)(); f != nil; item, f = f() {
values = append(values, newStringValue(item.name))
}
return r.newArrayValues(values)
}
func (r *Runtime) toPropertyDescriptor(v Value) objectImpl {
if o, ok := v.(*Object); ok {
desc := o.self
hasValue := desc.getStr("value") != nil
hasWritable := desc.getStr("writable") != nil
hasGet := false
hasSet := false
if get := desc.getStr("get"); get != nil {
if get != _undefined {
if _, ok := r.toObject(get).self.assertCallable(); !ok {
r.typeErrorResult(true, "getter must be callable")
}
}
hasGet = true
}
if set := desc.getStr("set"); set != nil {
if set != _undefined {
if _, ok := r.toObject(set).self.assertCallable(); !ok {
r.typeErrorResult(true, "setter must be callable")
}
}
hasSet = true
}
if (hasGet || hasSet) && (hasValue || hasWritable) {
r.typeErrorResult(true, "Invalid property. A property cannot both have accessors and be writable or have a value")
}
return desc
}
r.typeErrorResult(true, "Property description must be an object: %s", v.String())
return nil
}
func (r *Runtime) _defineProperties(o *Object, p Value) {
type propItem struct {
name string
prop objectImpl
}
props := p.ToObject(r)
var list []propItem
for item, f := props.self.enumerate(false, false)(); f != nil; item, f = f() {
list = append(list, propItem{
name: item.name,
prop: r.toPropertyDescriptor(props.self.getStr(item.name)),
})
}
for _, prop := range list {
o.self.defineOwnProperty(newStringValue(prop.name), prop.prop, true)
}
}
func (r *Runtime) object_create(call FunctionCall) Value {
var proto *Object
if arg := call.Argument(0); arg != _null {
if o, ok := arg.(*Object); ok {
proto = o
} else {
r.typeErrorResult(true, "Object prototype may only be an Object or null: %s", arg.String())
}
}
o := r.newBaseObject(proto, classObject).val
if props := call.Argument(1); props != _undefined {
r._defineProperties(o, props)
}
return o
}
func (r *Runtime) object_defineProperty(call FunctionCall) (ret Value) {
if obj, ok := call.Argument(0).(*Object); ok {
if descr, ok := call.Argument(2).(*Object); ok {
obj.self.defineOwnProperty(call.Argument(1), descr.self, true)
ret = call.Argument(0)
} else {
r.typeErrorResult(true, "Property description must be an object: %v", call.Argument(2))
}
} else {
r.typeErrorResult(true, "Object.defineProperty called on non-object")
}
return
}
func (r *Runtime) object_defineProperties(call FunctionCall) Value {
obj := r.toObject(call.Argument(0))
r._defineProperties(obj, call.Argument(1))
return obj
}
func (r *Runtime) object_seal(call FunctionCall) Value {
// ES6
arg := call.Argument(0)
if obj, ok := arg.(*Object); ok {
var descr objectImpl
for item, f := obj.self.enumerate(true, false)(); f != nil; item, f = f() {
v := obj.self.getOwnProp(item.name)
if prop, ok := v.(*valueProperty); ok {
if !prop.configurable {
continue
}
prop.configurable = false
} else {
if descr == nil {
descr = r.NewObject().self
descr.putStr("writable", valueTrue, false)
descr.putStr("enumerable", valueTrue, false)
descr.putStr("configurable", valueFalse, false)
}
descr.putStr("value", v, false)
obj.self.defineOwnProperty(newStringValue(item.name), descr, true)
//obj.self._putProp(item.name, v, true, true, false)
}
}
obj.self.preventExtensions()
return obj
}
return arg
}
func (r *Runtime) object_freeze(call FunctionCall) Value {
arg := call.Argument(0)
if obj, ok := arg.(*Object); ok {
var descr objectImpl
for item, f := obj.self.enumerate(true, false)(); f != nil; item, f = f() {
v := obj.self.getOwnProp(item.name)
if prop, ok := v.(*valueProperty); ok {
prop.configurable = false
if prop.value != nil {
prop.writable = false
}
} else {
if descr == nil {
descr = r.NewObject().self
descr.putStr("writable", valueFalse, false)
descr.putStr("enumerable", valueTrue, false)
descr.putStr("configurable", valueFalse, false)
}
descr.putStr("value", v, false)
obj.self.defineOwnProperty(newStringValue(item.name), descr, true)
}
}
obj.self.preventExtensions()
return obj
} else {
// ES6 behavior
return arg
}
}
func (r *Runtime) object_preventExtensions(call FunctionCall) (ret Value) {
arg := call.Argument(0)
if obj, ok := arg.(*Object); ok {
obj.self.preventExtensions()
return obj
}
// ES6
//r.typeErrorResult(true, "Object.preventExtensions called on non-object")
//panic("Unreachable")
return arg
}
func (r *Runtime) object_isSealed(call FunctionCall) Value {
if obj, ok := call.Argument(0).(*Object); ok {
if obj.self.isExtensible() {
return valueFalse
}
for item, f := obj.self.enumerate(true, false)(); f != nil; item, f = f() {
prop := obj.self.getOwnProp(item.name)
if prop, ok := prop.(*valueProperty); ok {
if prop.configurable {
return valueFalse
}
} else {
return valueFalse
}
}
} else {
// ES6
//r.typeErrorResult(true, "Object.isSealed called on non-object")
return valueTrue
}
return valueTrue
}
func (r *Runtime) object_isFrozen(call FunctionCall) Value {
if obj, ok := call.Argument(0).(*Object); ok {
if obj.self.isExtensible() {
return valueFalse
}
for item, f := obj.self.enumerate(true, false)(); f != nil; item, f = f() {
prop := obj.self.getOwnProp(item.name)
if prop, ok := prop.(*valueProperty); ok {
if prop.configurable || prop.value != nil && prop.writable {
return valueFalse
}
} else {
return valueFalse
}
}
} else {
// ES6
//r.typeErrorResult(true, "Object.isFrozen called on non-object")
return valueTrue
}
return valueTrue
}
func (r *Runtime) object_isExtensible(call FunctionCall) Value {
if obj, ok := call.Argument(0).(*Object); ok {
if obj.self.isExtensible() {
return valueTrue
}
return valueFalse
} else {
// ES6
//r.typeErrorResult(true, "Object.isExtensible called on non-object")
return valueFalse
}
}
func (r *Runtime) object_keys(call FunctionCall) Value {
// ES6
obj := call.Argument(0).ToObject(r)
//if obj, ok := call.Argument(0).(*valueObject); ok {
var keys []Value
for item, f := obj.self.enumerate(false, false)(); f != nil; item, f = f() {
keys = append(keys, newStringValue(item.name))
}
return r.newArrayValues(keys)
//} else {
// r.typeErrorResult(true, "Object.keys called on non-object")
//}
//return nil
}
func (r *Runtime) objectproto_hasOwnProperty(call FunctionCall) Value {
p := call.Argument(0).String()
o := call.This.ToObject(r)
if o.self.hasOwnPropertyStr(p) {
return valueTrue
} else {
return valueFalse
}
}
func (r *Runtime) objectproto_isPrototypeOf(call FunctionCall) Value {
if v, ok := call.Argument(0).(*Object); ok {
o := call.This.ToObject(r)
for {
v = v.self.proto()
if v == nil {
break
}
if v == o {
return valueTrue
}
}
}
return valueFalse
}
func (r *Runtime) objectproto_propertyIsEnumerable(call FunctionCall) Value {
p := call.Argument(0).ToString()
o := call.This.ToObject(r)
pv := o.self.getOwnProp(p.String())
if pv == nil {
return valueFalse
}
if prop, ok := pv.(*valueProperty); ok {
if !prop.enumerable {
return valueFalse
}
}
return valueTrue
}
func (r *Runtime) objectproto_toString(call FunctionCall) Value {
switch o := call.This.(type) {
case valueNull:
return stringObjectNull
case valueUndefined:
return stringObjectUndefined
case *Object:
return newStringValue(fmt.Sprintf("[object %s]", o.self.className()))
default:
obj := call.This.ToObject(r)
return newStringValue(fmt.Sprintf("[object %s]", obj.self.className()))
}
}
func (r *Runtime) objectproto_toLocaleString(call FunctionCall) Value {
return call.This.ToObject(r).ToString()
}
func (r *Runtime) objectproto_valueOf(call FunctionCall) Value {
return call.This.ToObject(r)
}
func (r *Runtime) initObject() {
o := r.global.ObjectPrototype.self
o._putProp("toString", r.newNativeFunc(r.objectproto_toString, nil, "toString", nil, 0), true, false, true)
o._putProp("toLocaleString", r.newNativeFunc(r.objectproto_toLocaleString, nil, "toLocaleString", nil, 0), true, false, true)
o._putProp("valueOf", r.newNativeFunc(r.objectproto_valueOf, nil, "valueOf", nil, 0), true, false, true)
o._putProp("hasOwnProperty", r.newNativeFunc(r.objectproto_hasOwnProperty, nil, "hasOwnProperty", nil, 1), true, false, true)
o._putProp("isPrototypeOf", r.newNativeFunc(r.objectproto_isPrototypeOf, nil, "isPrototypeOf", nil, 1), true, false, true)
o._putProp("propertyIsEnumerable", r.newNativeFunc(r.objectproto_propertyIsEnumerable, nil, "propertyIsEnumerable", nil, 1), true, false, true)
r.global.Object = r.newNativeFuncConstruct(r.builtin_Object, classObject, r.global.ObjectPrototype, 1)
o = r.global.Object.self
o._putProp("defineProperty", r.newNativeFunc(r.object_defineProperty, nil, "defineProperty", nil, 3), true, false, true)
o._putProp("defineProperties", r.newNativeFunc(r.object_defineProperties, nil, "defineProperties", nil, 2), true, false, true)
o._putProp("getOwnPropertyDescriptor", r.newNativeFunc(r.object_getOwnPropertyDescriptor, nil, "getOwnPropertyDescriptor", nil, 2), true, false, true)
o._putProp("getPrototypeOf", r.newNativeFunc(r.object_getPrototypeOf, nil, "getPrototypeOf", nil, 1), true, false, true)
o._putProp("getOwnPropertyNames", r.newNativeFunc(r.object_getOwnPropertyNames, nil, "getOwnPropertyNames", nil, 1), true, false, true)
o._putProp("create", r.newNativeFunc(r.object_create, nil, "create", nil, 2), true, false, true)
o._putProp("seal", r.newNativeFunc(r.object_seal, nil, "seal", nil, 1), true, false, true)
o._putProp("freeze", r.newNativeFunc(r.object_freeze, nil, "freeze", nil, 1), true, false, true)
o._putProp("preventExtensions", r.newNativeFunc(r.object_preventExtensions, nil, "preventExtensions", nil, 1), true, false, true)
o._putProp("isSealed", r.newNativeFunc(r.object_isSealed, nil, "isSealed", nil, 1), true, false, true)
o._putProp("isFrozen", r.newNativeFunc(r.object_isFrozen, nil, "isFrozen", nil, 1), true, false, true)
o._putProp("isExtensible", r.newNativeFunc(r.object_isExtensible, nil, "isExtensible", nil, 1), true, false, true)
o._putProp("keys", r.newNativeFunc(r.object_keys, nil, "keys", nil, 1), true, false, true)
r.addToGlobal("Object", r.global.Object)
}
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