On Aug 25, 2009, at 9:32 AM, Hallvord R. M. Steen wrote:
On Sat, 04 Jul 2009 13:49:01 +0200, Hallvord R. M. Steen
<hallv...@opera.com> wrote:
Another question: The JSON grammar says
JSONNumber ::
-opt DecimalIntegerLiteral JSONFraction opt ExponentPart opt
JSONFraction ::
. DecimalDigits
This apparently makes numbers like "1." illegal?
I suggest that the spec is changed. In 15.12.1.1 under "Syntax", add
"JSONFraction" on a new line after
JSONNumber ::
-opt DecimalIntegerLiteral JSONFractionopt ExponentPartopt
in other words, define JSONNumber as follows:
JSONNumber ::
-opt DecimalIntegerLiteral JSONFractionopt ExponentPartopt
JSONFraction
I suggest this change because the browser implementations seem to
align on
allowing this.
The WebKit JSON parser does not allow this (You can test in Safari
4.0.3 or a nightly build) -- In general the JSON parser in WebKit is
strictly conformant with the spec (i am unaware of anywhere the parser
breaks conformance to the strict grammar and lexer of the spec -- if
someone finds one i consider it a bug and encourage them to file at http://bugs.webkit.org
:D ). We also haven't received any bugs relating to compatibility
of a strict parser/lexer vs. eval-driven parsing.
--Oliver
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