How can a lexer decide a token to be "get", "IdentifierName" or "Identifier" ?

[Allen Wirfs-Brock]

Right, I think "mixin" is winning over "define" as the name.   Same semantics in either case.

Allen

On Feb 5, 2013, at 9:03 AM, Rick Waldron wrote:

> 
> 
> 
> On Tue, Feb 5, 2013 at 11:55 AM, Brandon Benvie <brandon at brandonbenvie.com> wrote:
> Indeed, and given use of ES6, I expect things like this wouldn't be very uncommon (I think is supposed to be Object.define right?):
> 
> Nothing there yet, though I suspect Object.mixin() will have more traction.
> 
> https://mail.mozilla.org/pipermail/es-discuss/2012-December/027037.html
> 
> Rick
>  
> 
> Object.define(x, {
>   get a(){},
>   set a(v){},
>   get b(){},
>   c(){}
> });
> 
> Instead of most current descriptor stuff (since enumerability and configurability are rarely desired to be false).
> 
> 
> On Tuesday, February 5, 2013, Rick Waldron wrote:
> 
> 
> 
> On Tue, Feb 5, 2013 at 3:19 AM, gaz Heyes <gazheyes at gmail.com> wrote:
> On 4 February 2013 23:44, Brendan Eich <brendan at mozilla.com> wrote:
> What's confusing?
> 
> The fact that you can have an object property without a colon and a function without a function keyword.
> 
> ES6 concise methods will make this the norm:
> 
> let o = {
>   meaning() {
>     return 42;
>   }
> };
> 
> o.meaning(); // 42
> 
>  
> Then a property descriptor uses a completely new syntax to define the same thing. Why?
> Object.defineProperty(window,'x',{set:alert});
> x=1;
> 
> 
> What part is "new syntax"? Property descriptors are just object literal syntax—did you mean "different syntax"?
> 
>  
> 
> To me this seems hacked together.
>  
> ({'get'x(){return 123;}}).x 
> 
> That's not legal ES5.
> 
> Some engines support it though and I'm pretty sure Firefox did at some point.  
> 
> I think Brendan was referring to the quotes, ie. 'get'. Remove those for legal syntax:
> 
> ({ get x() { return 123; } }).x 
> 
> 
> Rick
> 
> 
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