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experimenting with generators...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
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Alex A. Naanou 2022-06-29 14:13:32 +03:00
parent a30c562660
commit 637c53d238
1 changed files with 40 additions and 2 deletions
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42
object.js
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@ -422,6 +422,7 @@ BOOTSTRAP(function(){
// STOP(value) yielded / thrown
// -> value yielded and iteration stops
//
// XXX doc!!!
// XXX should we use this for sources(..) and friends...
var stoppable =
module.stoppable =
@ -490,6 +491,43 @@ function(func){
//---------------------------------------------------------------------
// Prototype chain content access...
// XXX
var _sources =
module._sources =
function*(obj, name){
while(obj != null){
if(name === undefined
|| obj.hasOwnProperty(name)
|| (name == '__call__'
&& typeof(obj) == 'function')){
yield obj }
obj = obj.__proto__ } }
// XXX
var _entries =
module._entries =
function*(obj, name, props=false){
for(var o of _sources(obj, name)){
yield [
obj,
props ?
Object.getOwnPropertyDescriptor(obj, name)
// handle callable instance...
: !(name in obj)
&& name == '__call__'
&& typeof(obj) == 'function' ?
obj
: obj[name]
] }}
// XXX
var _values =
module._values =
function*(obj, name, props=false){
for(var [_, value] of _entries(...arguments)){
yield value }}
// Get a list of source objects for a prop/attr name...
//
@ -545,8 +583,7 @@ function(obj, name, callback){
// get full chain...
if(typeof(name) == 'function'){
callback = name
name = undefined
}
name = undefined }
var i = 0
var o
var res = []
@ -573,6 +610,7 @@ function(obj, name, callback){
return res.flat() }
// Get a list of values/props set in source objects for a prop/attr name...
//
// Get values...