Marpa brings back the feeling of being as a child listening to my father
giving a lecture to a graduate class in partial differential equations - I
could see the x's the y's but how things work were far beyond my
comprehension. I'm sure my head would be a lot less sore and Jeffrey richer
if instead of bouncing my head against the wall I were to donate another
collar but I am hardly the Duke of Brunswick-Lüneburg.
(Maybe I should just say "I'm just too stupid!", give up and see if I can
successfully twiddle my thumbs.)
The data consists of (physical) lines terminated by a newline. A line may
be:
1) <name> = <boolean>
2) '/'<regexp>'/' = <boolean>
Comments begin with '--' and are end of line type comments.
Shouldn't I be able to say that anything else is an error? ie:
:default ::= action => [values]
lexeme default = latm => 1
:start ::= lines
lines ::= line+
line ::= <name> ('=') <boolean> (NEWLINE) action => doName
| ('/') <regexp> ('/') ('=') <boolean> (NEWLINE) action =>
doRegexp
# would like the following to catch everything else
|| <bad stuff> (NEWLINE) action => doError rank => -1
#
<name> ~ <unquoted name> | <quoted name>
<unquoted name> ~ ALPHA | ALPHA ALPHANUMERICS
<quoted name> ~ '"' <quoted name body> '"'
<quoted name body> ~ [\w]+ # for now
<regexp> ~ [$(|)\w^]+
#
<bad stuff> ~ ANYTHING+
#
<boolean> ~ TRUE | FALSE
FALSE ~ 'FALSE':i | 'F':i | '0'
TRUE ~ 'TRUE':i | 'T':i |'1'
ALPHA ~ [a-z]:i
ALPHANUMERICS ~ [\w]*
:discard ~ COMMENT
COMMENT ~ '--' <comment body>
<comment body> ~ ANYTHING*
ANYTHING ~ [^\x{A}\x{B}\x{C}\x{D}\x{2028}\x{2029}]
:discard ~ WHITESPACE
WHITESPACE ~ [ \t]+
NEWLINE ~ [\n]
CAVEAT: <name> is going to be an Oracle identifier and they are weird!
--
You received this message because you are subscribed to the Google Groups
"marpa parser" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/marpa-parser/d07a1e10-3244-4899-b73f-ba7deb0369e7n%40googlegroups.com.
