flynx/features.js
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several fixes + docs...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
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Alex A. Naanou 2016-08-24 00:48:40 +03:00
parent 606f48a4d7
commit f6a84a9bd0
2 changed files with 37 additions and 7 deletions
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30
README.md
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@ -5,8 +5,6 @@ The Feature / Action couple is meta-programming library that helps with:
- managing and applying sets of methods (Features) to objects (a-la _mixin_) - managing and applying sets of methods (Features) to objects (a-la _mixin_)
## Actions ## Actions
Actions are an extension to the JavaScript object model tailored for Actions are an extension to the JavaScript object model tailored for
@ -16,6 +14,32 @@ By design this tool-set promotes a _cooperative_ model and makes it
hard to change/modify existing signatures / _contracts_ in _extending_ hard to change/modify existing signatures / _contracts_ in _extending_
code. code.
### The problem:
```javascript
var N = {
get value(){
return this.__value || 0
},
set value(val){
this.__value = val
}
times: function(n){
this.value *= n
}
}
var n = Object.create(N)
```
To extend this object we'll need to:
### Functionality: ### Functionality:
- **Call _extended_ actions automatically** - **Call _extended_ actions automatically**
@ -53,6 +77,8 @@ code.
---
### The main entities: ### The main entities:
```javascript ```javascript

14
actions.js
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@ -967,7 +967,7 @@ module.MetaActions = {
// NOTE: if 'all' is set them mixin all the actions available, // NOTE: if 'all' is set them mixin all the actions available,
// otherwise only mixin local actions... // otherwise only mixin local actions...
// NOTE: this will override existing own attributes. // NOTE: this will override existing own attributes.
inlineMmixin: function(from, all, descriptors, all_attr_types){ inlineMixin: function(from, all, descriptors, all_attr_types){
// defaults... // defaults...
descriptors = descriptors || true descriptors = descriptors || true
all_attr_types = all_attr_types || false all_attr_types = all_attr_types || false
@ -1012,14 +1012,14 @@ module.MetaActions = {
return this return this
}, },
// Same as .inlineMmixin(..) but isolates a mixin in a seporate object // Same as .inlineMixin(..) but isolates a mixin in a seporate object
// in the inheritance chain... // in the inheritance chain...
// //
mixin: function(from, all, descriptors, all_attr_types){ mixin: function(from, all, descriptors, all_attr_types){
var proto = Object.create(this.__proto__) var proto = Object.create(this.__proto__)
// mixinto an empty object // mixinto an empty object
proto.inlineMmixin(from, all, descriptors, all_attr_types) proto.inlineMixin(from, all, descriptors, all_attr_types)
// mark the mixin for simpler removal... // mark the mixin for simpler removal...
proto.__mixin_source = from proto.__mixin_source = from
@ -1273,9 +1273,13 @@ function Actions(a, b){
// skip non-arrays... // skip non-arrays...
if(arg == null if(arg == null
|| arg.constructor !== Array // XXX node?: for some magical reason when running this
// from node console instanceof tests fail...
//|| !(arg instanceof Array)
|| arg.constructor.name != 'Array'
// and arrays the last element of which is not a function... // and arrays the last element of which is not a function...
|| !(arg[arg.length-1] instanceof Function)){ || typeof(arg[arg.length-1]) != 'function'){
//|| !(arg[arg.length-1] instanceof Function)){
return return
} }