Should "Literal" in syntactical grammar instead of lexical grammar?
csf178 at gmail.com
Tue Feb 28 08:18:03 PST 2012
Thank you for the comments.
There might be no normative significance but I mean there is no way to put
the "Literal" production in a lexer. If a lexer produce token with type
”Literal“, syntactical parser will not be able to decide to use it as a
”Literal“ or a ”StringLiteral“.
So I think keeping this rule in current location might confuse the ones who
want to implement this spec.
2012/2/28 Brendan Eich <brendan at mozilla.org>
> Indeed this has come up before:
> No one replied then, alas.
> There's no normative significance, as Michael Dyck conjectured. It seems
> we could move Literal. Perhaps Waldemar or Allen has a preference. At this
> point I am ok with letting the traditional location of Literal stand.
> 程劭非 wrote:
>> Hi, everyone,
>> I'm working a on ES parser recently and noticed something might be wrong
>> about the symbol “Literal”.
>> Since “Literal” and “StringLiteral" "NumericLiteral" appears in lexical
>> grammar , I believe “Literal” should be a non-terminal symbol. Also there
>> is no other rule using “Literal” in lexical grammar. As all above I think
>> the following description is a syntactical grammar rule instead of a
>> lexical grammar rule:
>> /Literal /*::
>> So my suggest is moving the description from Annex A.1 to Annex A.3
>> Shaofei Cheng
>> es-discuss mailing list
>> es-discuss at mozilla.org
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