Hello,
Le 9 janv. 2014 22:51, "Tim Brigham" <[email protected]> a écrit :
>
> I wanted to ask about how I'm handling one point in writing the lens for
parsing my NASL files.
>
> I'm using two cases for my end of line, those that end with a semicolon
only and those that end with a closing parenthesis. e.g.
>
> let cparen = del /\)/ ")"
This is actually Util.del_str ")"
> let semic = Util.del_str ";"
> let dquote = Util.del_str "\""
It is better now to rely on the Quote module for safe/ automatic quote
management.
> let comma = del /,/ ","
> let colon = del /:[ \t]*/ ": "
> let eol = del /[ \t]*\n/ "\n"
It's good practice tous Util.eol here
> let del_opt_ws = del /[ \t]*/ ""
> let equal = del /[ \t]*=[ \t]*/ "="
this is Sep.space_equal
> let oparen = del /\(/ "("
>
> let cparen_entry (kw:string) = [ del_opt_ws . key kw . oparen .
value_to_cparen . cparen . semic . eol ]
>From your example below, it seems like you'd rather want a value_to_dquote.
> let semic_entry (kw:string) = [ del_opt_ws . key kw . equal .
value_to_semic . semic . eol ]
>
> This works perfectly until I run into something where I have an embedded
closing parenthesis in a given line, e.g
>
>
> script_copyright("This script is Copyright (C) 2004 Michel Arboi");
>
>
> My thought is something like this should work to generalize it but I'm
not sure how to define value_to_something.
>
> let refined_entry (kw:string) = [ del_opt_ws . key kw . ( oparen | equal
) . value_to_something . cparen{0,1} . semic . eol ]
>
> The (oparen|equal) comes back with
> exception: overlapping lenses in tree union.put
> Example matched by both:
> First lens: lens/nasl.aug:24.14-.26:
> Second lens: lens/nasl.aug:23.13-.36:
see my comment above on value_to_dquote. Again, the Quote module can help
you here.
cheers,
Raphaël
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