On Oct 10, 2010, at 4:14 PM, Mark S. Miller wrote: > My interpretation is that the spec in this regard is consistent with reality > as intended and is not an ass.
Could be -- I know we have discussed this before, and I like your interpretation, but Cameron is only the latest among many to reach different categorical conclusions, which did not include yours (if I have not misread his). Something is unclear in the spec. /be > Native functions can be written in JS or be built in. The "semantics defined > by the spec" does not mean that the spec says what specifically their > internal [[Call]] method does when called. It does say what the overall > contract is. For example, it must inherit from Function.prototype. It must > have an integer length. It must have a [[Call]] property, and thus its > "typeof" must be "function". And it should have a [[Class]] of "Function". > > In other words, [[Class]] "Function" is one of the native internal nominal > types whose contract is defined by the spec. If a method of a host object > obeys that contract, it would be best for it to actually be a native function. > > > On Mon, Oct 11, 2010 at 12:41 AM, Brendan Eich <bren...@mozilla.org> wrote: > On Oct 10, 2010, at 3:28 PM, Brendan Eich wrote: > > > Native functions do not have associated FunctionBody representations, of > > course; one clue is what toString returns. > > Here I use "native functions" to mean either the built-in functions of ES5 > clause 15, or the DOM built-in functions. Although the spec draws a bright > line around its built-ins vs. "host objects", real implementations use the > same native-function variant of function objects for both. This is important > reality to support with some spec fixes. > > What's more, we hope to self-host DOM methods over time, so the WebIDL specs > should not require built-in or "native" implementation. It should not be > mandatory. But now I think we are way beyond es5-discuss territory. Setting > reply-to. > > /be > _______________________________________________ > es5-discuss mailing list > es5-disc...@mozilla.org > https://mail.mozilla.org/listinfo/es5-discuss > > > > -- > Cheers, > --MarkM > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss
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