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package goja
type weakMap uint64
type weakMapObject struct {
baseObject
m weakMap
}
func (wmo *weakMapObject) init() {
wmo.baseObject.init()
wmo.m = weakMap(wmo.val.runtime.genId())
}
func (wm weakMap) set(key *Object, value Value) {
key.getWeakRefs()[wm] = value
}
func (wm weakMap) get(key *Object) Value {
return key.weakRefs[wm]
}
func (wm weakMap) remove(key *Object) bool {
if _, exists := key.weakRefs[wm]; exists {
delete(key.weakRefs, wm)
return true
}
return false
}
func (wm weakMap) has(key *Object) bool {
_, exists := key.weakRefs[wm]
return exists
}
func (r *Runtime) weakMapProto_delete(call FunctionCall) Value {
thisObj := r.toObject(call.This)
wmo, ok := thisObj.self.(*weakMapObject)
if !ok {
panic(r.NewTypeError("Method WeakMap.prototype.delete called on incompatible receiver %s", r.objectproto_toString(FunctionCall{This: thisObj})))
}
key, ok := call.Argument(0).(*Object)
if ok && wmo.m.remove(key) {
return valueTrue
}
return valueFalse
}
func (r *Runtime) weakMapProto_get(call FunctionCall) Value {
thisObj := r.toObject(call.This)
wmo, ok := thisObj.self.(*weakMapObject)
if !ok {
panic(r.NewTypeError("Method WeakMap.prototype.get called on incompatible receiver %s", r.objectproto_toString(FunctionCall{This: thisObj})))
}
var res Value
if key, ok := call.Argument(0).(*Object); ok {
res = wmo.m.get(key)
}
if res == nil {
return _undefined
}
return res
}
func (r *Runtime) weakMapProto_has(call FunctionCall) Value {
thisObj := r.toObject(call.This)
wmo, ok := thisObj.self.(*weakMapObject)
if !ok {
panic(r.NewTypeError("Method WeakMap.prototype.has called on incompatible receiver %s", r.objectproto_toString(FunctionCall{This: thisObj})))
}
key, ok := call.Argument(0).(*Object)
if ok && wmo.m.has(key) {
return valueTrue
}
return valueFalse
}
func (r *Runtime) weakMapProto_set(call FunctionCall) Value {
thisObj := r.toObject(call.This)
wmo, ok := thisObj.self.(*weakMapObject)
if !ok {
panic(r.NewTypeError("Method WeakMap.prototype.set called on incompatible receiver %s", r.objectproto_toString(FunctionCall{This: thisObj})))
}
key := r.toObject(call.Argument(0))
wmo.m.set(key, call.Argument(1))
return call.This
}
func (r *Runtime) needNew(name string) *Object {
return r.NewTypeError("Constructor %s requires 'new'", name)
}
func (r *Runtime) builtin_newWeakMap(args []Value, newTarget *Object) *Object {
if newTarget == nil {
panic(r.needNew("WeakMap"))
}
proto := r.getPrototypeFromCtor(newTarget, r.global.WeakMap, r.global.WeakMapPrototype)
o := &Object{runtime: r}
wmo := &weakMapObject{}
wmo.class = classObject
wmo.val = o
wmo.extensible = true
o.self = wmo
wmo.prototype = proto
wmo.init()
if len(args) > 0 {
if arg := args[0]; arg != nil && arg != _undefined && arg != _null {
adder := wmo.getStr("set", nil)
adderFn := toMethod(adder)
if adderFn == nil {
panic(r.NewTypeError("WeakMap.set in missing"))
}
iter := r.getIterator(arg, nil)
i0 := valueInt(0)
i1 := valueInt(1)
if adder == r.global.weakMapAdder {
iter.iterate(func(item Value) {
itemObj := r.toObject(item)
k := itemObj.self.getIdx(i0, nil)
v := nilSafe(itemObj.self.getIdx(i1, nil))
wmo.m.set(r.toObject(k), v)
})
} else {
iter.iterate(func(item Value) {
itemObj := r.toObject(item)
k := itemObj.self.getIdx(i0, nil)
v := itemObj.self.getIdx(i1, nil)
adderFn(FunctionCall{This: o, Arguments: []Value{k, v}})
})
}
}
}
return o
}
func (r *Runtime) createWeakMapProto(val *Object) objectImpl {
o := newBaseObjectObj(val, r.global.ObjectPrototype, classObject)
o._putProp("constructor", r.getWeakMap(), true, false, true)
r.global.weakMapAdder = r.newNativeFunc(r.weakMapProto_set, "set", 2)
o._putProp("set", r.global.weakMapAdder, true, false, true)
o._putProp("delete", r.newNativeFunc(r.weakMapProto_delete, "delete", 1), true, false, true)
o._putProp("has", r.newNativeFunc(r.weakMapProto_has, "has", 1), true, false, true)
o._putProp("get", r.newNativeFunc(r.weakMapProto_get, "get", 1), true, false, true)
o._putSym(SymToStringTag, valueProp(asciiString(classWeakMap), false, false, true))
return o
}
func (r *Runtime) createWeakMap(val *Object) objectImpl {
o := r.newNativeConstructOnly(val, r.builtin_newWeakMap, r.getWeakMapPrototype(), "WeakMap", 0)
return o
}
func (r *Runtime) getWeakMapPrototype() *Object {
ret := r.global.WeakMapPrototype
if ret == nil {
ret = &Object{runtime: r}
r.global.WeakMapPrototype = ret
ret.self = r.createWeakMapProto(ret)
}
return ret
}
func (r *Runtime) getWeakMap() *Object {
ret := r.global.WeakMap
if ret == nil {
ret = &Object{runtime: r}
r.global.WeakMap = ret
ret.self = r.createWeakMap(ret)
}
return ret
}
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