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the walk variant is working...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2021-06-25 16:49:49 +03:00
parent 59a4b201ee
commit bf849bb2d4
1 changed files with 44 additions and 47 deletions
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91
diff2.js
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@ -396,18 +396,25 @@ module.WALK_HANDLERS = {
if(obj === null){
throw module.STOP } } },
set: {
walk: function(obj){
return obj instanceof Set
&& [...obj.values()].entries() } },
map: {
walk: function(obj){
return obj instanceof Map
&& obj.entries() } },
set: {
walk: function(obj){
return obj instanceof Set
&& [...[...obj.values()].entries()] } },
attrs: {
attr: {
walk: function(obj){
return typeof(obj) == 'object'
&& [...Object.entries(obj)] } },
proto: {
walk: function(obj){
return typeof(obj) == 'object'
&& obj.constructor.prototype !== obj.__proto__
&& [['__proto__', obj.__proto__]] }, },
text: {
walk: function(obj){
return typeof(obj) == 'string'
@ -424,6 +431,10 @@ module.WALK_HANDLERS = {
// -> <value>
// !> STOP(<value>)
//
// <handler>(<obj>, <path>, <orig-path>, 'LINK')
// -> <value>
// !> STOP(<value>)
//
// <walker>(<obj>)
// <walker>(<obj>, <path>)
// -> <generator>
@ -451,6 +462,12 @@ function(handler, path=[], options={}){
options)
: options
var _handler = function*(){
if(handler instanceof types.Generator){
yield* handler(...arguments)
} else {
yield handler(...arguments) } }
var _walk = function*(obj, path=p, type=undefined){
path = path instanceof Array ?
path
@ -459,6 +476,15 @@ function(handler, path=[], options={}){
: []
type = type || 'root'
// handle loops...
var seen = options.seen =
options.seen || new Map()
if(seen.has(obj)){
yield* _handler(obj, path, seen.get(obj), 'LINK')
return }
typeof(obj) == 'object'
&& seen.set(obj, path)
var handlers = options.handlers || module.WALK_HANDLERS
// format:
// [
@ -482,10 +508,7 @@ function(handler, path=[], options={}){
try {
// main object...
if(handler instanceof types.Generator){
yield* handler(obj, path, next, type)
} else {
yield handler(obj, path, next, type) }
yield* _handler(obj, path, next, type)
// next/children...
yield* next
.map(function*([type, items]){
@ -1066,47 +1089,21 @@ console.log(JSON.stringify(diff(
console.log('---')
var walker = walk(function(e, p){
return [
p,
e == null ?
e
: typeof(e) == 'object' ?
{type: e.constructor.name}
: e,
] })
var walker = walk(function(e, p, n, t){
return t == 'LINK' ?
[p, 'LINK', n]
: [
p,
e == null ?
e
: typeof(e) == 'object' ?
{type: e.constructor.name}
: e,
] })
// XXX test functions...
console.log([
/*
...walker(o)
/*/
...walker({
// literals...
null: null,
undefined: undefined,
NaN: NaN,
true: true,
false: false,
number: 1,
string: 'string',
// containers...
array: [1,2,3],
object: {a:1},
// encapsulated containers...
set: new Set([1, 2, 3]),
map: new Map([[1, 2], [3, 4]]),
// recursive...
// XXX
// mixed...
array_with_attrs: Object.assign(
[1,2,3],
{a: 333}),
})
//*/
.chain(serializePaths) ])