flynx/object.js
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added missing Generator / AsyncGenerator base types + stoppable(..) wrapper -- noy yet sure if this is the right place for these...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2022-06-28 12:22:23 +03:00
parent 4d81abfb9c
commit 1944b5ceca
1 changed files with 83 additions and 19 deletions
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80
object.js
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@ -49,7 +49,9 @@ module.LINK_FUNCTION_METHODS = [
//
var BOOTSTRAP =
function(func){
var b = BOOTSTRAP.__delayed = BOOTSTRAP.__delayed || []
var b = BOOTSTRAP.__delayed =
BOOTSTRAP.__delayed
|| []
func ?
b.push(func)
: b.map(function(f){ f() }) }
@ -250,7 +252,8 @@ function(base, obj, non_strict){
return false }
// attr count...
var o = Object.keys(Object.getOwnPropertyDescriptors(obj))
if(Object.keys(Object.getOwnPropertyDescriptors(base)).length != o.length){
if(Object.keys(Object.getOwnPropertyDescriptors(base)).length
!= o.length){
return false }
// names and values...
o = o.map(function(k){
@ -300,7 +303,8 @@ module.create =
function(obj){
// name given...
var name = ''
if(typeof(obj) == 'string' && arguments.length > 1){
if(typeof(obj) == 'string'
&& arguments.length > 1){
;[name, obj] = arguments
// sanity check...
if(!/^[a-zA-Z_][a-zA-Z0-9_]*$/.test(name.trim())){
@ -350,12 +354,14 @@ BOOTSTRAP(function(){
get name(){
return this.constructor.name },
// XXX BUG? is this an error that with this everything seems to work
// while without this instances of this work fine while instances
// of "sub-classes" do not set the .stack correctly???
// XXX BUG? is this an error that with this everything seems
// to work while without this instances of this work
// fine while instances of "sub-classes" do not set
// the .stack correctly???
// ...is this a JS quirk or am I missing something???
__new__: function(context, ...args){
return Reflect.construct(module.Error.__proto__, args, this.constructor) },
return Reflect.construct(
module.Error.__proto__, args, this.constructor) },
//return Reflect.construct(Error, args, this.constructor) },
})
@ -379,6 +385,64 @@ BOOTSTRAP(function(){
})
// XXX should this be global???
var Generator =
module.Generator =
(function*(){}).constructor
// XXX should this be global???
var AsyncGenerator =
module.AsyncGenerator =
(async function*(){}).constructor
// XXX should we have a generic generator that cand return STOP???
// XXX
var stoppable =
module.stoppable =
function(func){
return Object.assign(
func instanceof Generator ?
// NOTE: the only difference between Generator/AsyncGenerator
// versions of this is the async keyword -- keep them
// in sync...
function*(){
try{
yield* func.call(this, ...arguments)
} catch(err){
if(err === STOP){
return
} else if(err instanceof STOP){
yield err.value
return }
throw err } }
: func instanceof AsyncGenerator ?
// NOTE: the only difference between Generator/AsyncGenerator
// versions of this is the async keyword -- keep them
// in sync...
async function*(){
try{
yield* func.call(this, ...arguments)
} catch(err){
if(err === STOP){
return
} else if(err instanceof STOP){
yield err.value
return }
throw err } }
: function(){
try{
return func.call(this, ...arguments)
} catch(err){
if(err === STOP){
return
} else if(err instanceof STOP){
return err.value }
throw err } },
{ toString: function(){
return func.toString() }, }) }
// Get a list of source objects for a prop/attr name...
//
@ -421,7 +485,7 @@ BOOTSTRAP(function(){
// - other - return a value instead of the triggering object.
//
//
// NOTE: this gos up the prototype chain, not caring about any role (
// NOTE: this goes up the prototype chain, not caring about any role (
// instance/class or instance/prototype) bounderies and depends
// only on the object given as the starting point.
// It is possible to start the search from this, thus checking