Coincidently (!!!), I recently opened a feature request in WebKit on
this topic, kind of:
https://bugs.webkit.org/show_bug.cgi?id=30933
Not sure I'll have time to do anything about it, and surely won't
without some kind of real framework helping out to add support on
their end ...
BTW, I thought JavaScript was the new assembler, not the new C.
On Nov 4, 2009, at 3:04 PM, P T Withington wrote:
Sure would be nifty to have #file and #line directives, now that
Javascript is the new C.
FWIW, OpenLaszlo generates annotations like so:
Filename, line, column:
/* -*- file: lpp-8534.lzx#10.7 -*- */
Same file, but line numbering needs to be reset (because output has
more or less lines corresponding to source):
/* -*- file: #15 -*- */
No corresponding source file (i.e., generated code follows):
/* -*- file: -*- */
I can see merits to one gigantic comment up front with a mapping
table ala Caja, but we found interspersing them worked better for
humans staring at Javascript "assembly" in a Javascript debugger.
IWBNI @sourceurl could be expanded in some form to work with loaded
files...
On 2009-11-04, at 14:39, Patrick Mueller wrote:
Coincidently, I posted a blog entry on SyntaxError and eval()
yesterday:
http://pmuellr.blogspot.com/2009/11/evil-eval.html
On Nov 4, 2009, at 11:10 AM, Kevin Curtis wrote:
This has probably been chewed over but -
The ES5 spec defines 'name' and 'message' as properties of the
Error -
and ReferenceError, SyntaxError etc - objects.
Currently engines have useful additional non-standard properties:
Mozilla - fileName, lineNumber and stack.
V8 - stack (and type, arguments). (The string returned by 'stack' is
not in the same format as Mozilla).
JSC - line, sourceId, sourceURL, expressionBeginOffset,
expressionCaretOffset ,expressionEndOffset - and a few others for
Statement errors.
Any chance for ES6 on standardizing Error object property/ies which
report back the error location.
Maybe a property 'location' on the Error object which returns an
object. e.g
e.location ->
{fileName:<filename>, pos: <character posNumber>,
line:<lineNumber> ,
lineEnd:<lineNumber>, col:<colNumber> , colEnd:<colNumber>, stack:
<stackString>}
With maybe pos and line being mandatory properties and the other
properties set if they can be set.
Patrick Mueller - http://muellerware.org/
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