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docs, notes and cleanup...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2022-06-08 16:03:35 +03:00
parent d68d67c73b
commit 21cc23501b
1 changed files with 17 additions and 27 deletions
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44
Promise.js
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@ -1,7 +1,4 @@
/**********************************************************************
*
*
*
*
* This defines the following extensions to Promise:
*
@ -28,18 +25,6 @@
var object = require('ig-object')
// XXX required for STOP...
//var generator = require('./generator')
/*********************************************************************/
/* XXX not used yet...
// NOTE: this is used in a similar fashion to Python's StopIteration...
var STOP =
module.STOP =
object.STOP
//*/
//---------------------------------------------------------------------
@ -48,13 +33,20 @@ module.STOP =
// Like Promise.all(..) but adds ability to iterate through results
// via generators .map(..)/.reduce(..) and friends...
//
// NOTE: it would be nice to support throwing STOP from the iterable
// promise but...
// - this is more complicated than simply using .smap(..) instead
// of .map(..) because the list can contain async promises...
// ...would need to wrap each .then(..) call in try-catch and
// manually handle the stop...
// ...then there's a question of derivative iterators etc.
// - another issue here is that the stop would happen in order of
// execution and not order of elements...
//
var IterablePromise =
module.IterablePromise =
object.Constructor('IterablePromise', Promise, {
// XXX
//STOP: object.STOP,
//
// Format:
// [
@ -64,6 +56,11 @@ object.Constructor('IterablePromise', Promise, {
// ...
// ]
//
// This format has several useful features:
// - concatenating packed list results in a packed list
// - adding an iterable promise (as-is) into a packed list results
// in a packed list
//
__list: null,
// low-level .__list handlers/helpers...
@ -321,14 +318,7 @@ object.Constructor('IterablePromise', Promise, {
// - do we unwind here or externally?
// ...feels like with the generator external unwinding is
// needed...
// XXX would be nice to support throwing STOP...
// - this is more complicated than simply suing .smap(..) instead
// of .map(..) because the list can contain async promises...
// ...would need to wrap each .then(..) call in try-catch and
// manually handle the stop...
// - another issue here is that the stop would happen in order of
// execution and not order of elements...
// XXX how do we handle errors???
// XXX how do we handle errors/rejections???
__new__: function(_, list, handler){
// instance...
var promise
@ -344,7 +334,7 @@ object.Constructor('IterablePromise', Promise, {
promise = {resolve, reject} }],
IterablePromise)
// new instance...
// populate new instance...
if(promise){
// handle/pack input data...
if(handler != 'raw'){