Hi all,
I'm having a small problem composing smaller matches in instaparse. Here
is what I'm trying...just observe the bold bits:
(def parsePK
(insta/parser
"S = TOKEN (SPACE TOKEN PUNCT?)* END
TOKEN = (NUM | DRUG | PK | DRUGPK | MECH | SIGN | EFF | ENCLOSED) /
WORD
<WORD> = #'\\w+' | PUNCT
<PUNCT> = #'\\p{Punct}'
ENCLOSED = PAREN | SQBR
<PAREN> = #'\\[.*\\]'
<SQBR> = #'\\(.*\\)'
NUM = #'[0-9]+'
ADV = #'[a-z]+ly'
<SPACE> = #'\\s+'
DRUG = #'(?i)didanosine|quinidine|tenofovir'
PK = #'(?i)exposure|bioavailability|lower?[\\s|\\-]?clearance'
*DRUGPK = PK SPACE TO SPACE DRUG SPACE EFF? SPACE *
MECH = #'[a-z]+e(s|d)'
*EFF = BE? SPACE SIGN? SPACE MECH | BE? SPACE MECH SPACE ADV? *
SIGN = ADV | NEG
NEG = 'not'
<TO> = 'to' | 'of'
<BE> = 'is' | 'are' | 'was' | 'were'
END = '.' " ))
Running the parser returns the following. It seems that the 2 bigger
composite rules DRUGPK & EFF are not recognised at all. Only the smaller
pieces are actually shown. I would expect [:TOKEN [:DRUGPK "Exposure to
didanosine is increased"]] and [:TOKEN [:EFF "is increased"]] entries.
(pprint
(parsePK "Exposure to didanosine is increased when coadministered with
tenofovir disoproxil fumarate [Table 5 and see Clinical Pharmacokinetics
(12.3, Tables 9 and 10)]."))
[:S
[:TOKEN [:PK "Exposure"]]
" "
[:TOKEN "to"]
" "
[:TOKEN [:DRUG "didanosine"]]
" "
[:TOKEN "is"]
" "
[:TOKEN [:MECH "increased"]]
" "
[:TOKEN "when"]
" "
[:TOKEN [:MECH "coadministered"]]
" "
[:TOKEN "with"]
" "
[:TOKEN [:DRUG "tenofovir"]]
","
" "
[:TOKEN "disoproxil"]
" "
[:TOKEN "fumarate"]
[:END "."]]
Am I thinking about it the wrong way? Can ayone shed some light?
many thanks in advance,
Jim
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