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<div class="moz-cite-prefix">On 11/04/2013 06:48 AM, Philippe Sigaud
wrote:<br>
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cite="mid:CAOA6Bi4_oWudZp357EhOz72MWt9XVTPFKEpHf9WNhSh__grb5Q@mail.gmail.com"
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<div dir="ltr">On Sun, Nov 3, 2013 at 7:08 PM, Timothee Cour <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:thelastmammoth@gmail.com" target="_blank">thelastmammoth@gmail.com</a>></span>
wrote:<br>
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<div class="gmail_extra"><span
style="color:rgb(80,0,80)">On Sun, Nov 3, 2013 at
1:13 AM, Philippe Sigaud </span><span dir="ltr"
style="color:rgb(80,0,80)"><<a
moz-do-not-send="true"
href="mailto:philippe.sigaud@gmail.com"
target="_blank">philippe.sigaud@gmail.com</a>></span><span
style="color:rgb(80,0,80)"> wrote:</span><br>
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<div class="gmail_quote">My current plan is
to write different engines, and letting
either the user select them at
compile-time, or to have the parser decide
which one to use, depending on the
grammar. I'm pretty sure the 'Type 3'
parts of a grammar (regular expressions)
could be bone by using std.regex, for
example.<br>
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<div>even lexing can't be done with regex, eg
nesting comments : /+ ... +/</div>
<div>Also, although it may seem cleaner at first to
combine lexing and parsing in 1 big grammar (as
done in pegged), it usually is faster do feed a
(separate) lexer output into parser. </div>
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<div>Lexing, yes. I was imprecise: even in a context-free
grammar, some rules are regular and could use std.regex
(the ct part) as the underlying engine, just for that
rule.</div>
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Lexing can not be done with regex. Think myArray[1. ] ! What is next
a dot or a number. <br>
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