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comp-syntax-gu-mlt/old-labs/lab2/grammar/english/MiniGrammarEng.gf
Arianna Masciolini 3d9659d987 cp labs to old-labs
2025-03-21 11:39:09 +01:00

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--# -path=.:../abstract
concrete MiniGrammarEng of MiniGrammar = open MiniResEng, Prelude in {
lincat
Utt = {s : Str} ;
Pol = {s : Str ; isTrue : Bool} ; -- the s field is empty, but needed for parsing
Temp = {s : Str ; isPres : Bool} ;
S = {s : Str} ;
QS = {s : Str} ;
Cl = { -- word order is fixed in S and QS
subj : Str ; -- subject
verb : Bool => Bool => {fin,inf : Str} ; -- dep. on Pol,Temp, e.g. "does","sleep"
compl : Str -- after verb: complement, adverbs
} ;
QCl = Cl ** {isWh : Bool} ;
Imp = {s : Bool => Str} ;
VP = {verb : GVerb ; compl : Str} ;
Comp = {s : Str} ;
AP = Adjective ;
CN = Noun ;
NP = {s : Case => Str ; a : Agreement} ;
IP = {s : Case => Str ; a : Agreement} ;
Pron = {s : Case => Str ; a : Agreement} ;
Det = {s : Str ; n : Number} ;
Conj = {s : Str} ;
Prep = {s : Str} ;
V = Verb ;
V2 = Verb2 ;
VS = Verb ;
VV = Verb ; ---- only VV to VP
A = Adjective ;
N = Noun ;
PN = {s : Str} ;
Adv = {s : Str} ;
IAdv = {s : Str} ;
lin
UttS s = s ;
UttQS s = s ;
UttNP np = {s = np.s ! Acc} ; -- Acc: produce "me" rather than "I"
UttAdv adv = adv ;
UttIAdv iadv = iadv ;
UttImpSg pol imp = {s = pol.s ++ imp.s ! pol.isTrue} ;
UseCl temp pol cl =
let clt = cl.verb ! pol.isTrue ! temp.isPres -- isTrue regulates if "do" is used
in {
s = pol.s ++ temp.s ++ --- needed for parsing: a GF hack
cl.subj ++ -- she
clt.fin ++ -- does
negation pol.isTrue ++ -- not
clt.inf ++ -- drink
cl.compl -- beer
} ;
UseQCl temp pol qcl =
let
isWh = qcl.isWh ;
clt = qcl.verb ! andB isWh pol.isTrue ! temp.isPres ; -- no "do" in present positive Wh questions
verbsubj = case isWh of {
True => qcl.subj ++ clt.fin ; -- no inversion in Wh questions
False => clt.fin ++ qcl.subj
}
in {
s = pol.s ++ temp.s ++
verbsubj ++
negation pol.isTrue ++ -- not
clt.inf ++ -- drink
qcl.compl -- beer
} ;
PredVP np vp = {
subj = np.s ! Nom ;
compl = vp.compl ;
verb = \\plain,isPres => case <vp.verb.isAux, plain, isPres, np.a> of {
-- non-auxiliary verbs, negative/question present: "does (not) drink"
<False,False,True,Agr Sg Per3> => {fin = "does" ; inf = vp.verb.s ! VF Inf} ;
<False,False,True,_ > => {fin = "do" ; inf = vp.verb.s ! VF Inf} ;
-- non-auxiliary, plain present ; auxiliary, all present: "drinks", "is (not)"
<_,_, True, Agr Sg Per1> => {fin = vp.verb.s ! PresSg1 ; inf = []} ;
<_,_, True, Agr Sg Per3> => {fin = vp.verb.s ! VF PresSg3 ; inf = []} ;
<_,_, True, _> => {fin = vp.verb.s ! PresPl ; inf = []} ;
-- all verbs, past: "has (not) drunk", "has (not) been"
<_,_, False,Agr Sg Per3> => {fin = "has" ; inf = vp.verb.s ! VF PastPart} ;
<_,_, False,_ > => {fin = "have" ; inf = vp.verb.s ! VF PastPart}
-- the negation word "not" is put in place in UseCl, UseQCl
}
} ;
QuestCl cl = cl ** {isWh = False} ; -- since the parts are the same, we don't need to change anything
QuestVP ip vp = PredVP ip vp ** {isWh = True} ;
ImpVP vp = {
s = table {
True => vp.verb.s ! VF Inf ++ vp.compl ; -- in Eng, imperative = infinitive
False => "do not" ++ vp.verb.s ! VF Inf ++ vp.compl
}
} ;
UseV v = {
verb = verb2gverb v ; -- lift ordinary verbs to generalized verbs
compl = []
} ;
ComplV2 v2 np = {
verb = verb2gverb v2 ;
compl = v2.c ++ np.s ! Acc -- NP object in the accusative, preposition first
} ;
ComplVS vs s = {
verb = verb2gverb vs ;
compl = "that" ++ s.s ;
} ;
ComplVV vv vp = {
verb = verb2gverb vv ;
compl = "to" ++ vp.verb.s ! VF Inf ++ vp.compl ;
} ;
UseComp comp = {
verb = be_GVerb ; -- the verb is the copula "be"
compl = comp.s
} ;
CompAP ap = ap ;
CompNP np = {
s = np.s ! Nom -- NP complement is in the nominative
} ;
CompAdv adv = adv ;
AdvVP vp adv =
vp ** {compl = vp.compl ++ adv.s} ;
DetCN det cn = {
s = table {c => det.s ++ cn.s ! det.n} ;
a = Agr det.n Per3 -- this kind of NP is always third person
} ;
UsePN pn = {
s = \\_ => pn.s ;
a = Agr Sg Per3
} ;
UsePron p = p ; -- Pron is worst-case NP
MassNP cn = {
s = \\_ => cn.s ! Sg ;
a = Agr Sg Per3
} ;
a_Det = {s = pre {"a"|"e"|"i"|"o" => "an" ; _ => "a"} ; n = Sg} ; --- a/an can get wrong
aPl_Det = {s = "" ; n = Pl} ;
the_Det = {s = "the" ; n = Sg} ;
thePl_Det = {s = "the" ; n = Pl} ;
UseN n = n ;
AdjCN ap cn = {
s = table {n => ap.s ++ cn.s ! n}
} ;
PositA a = a ;
PrepNP prep np = {s = prep.s ++ np.s ! Acc} ;
CoordS conj a b = {s = a.s ++ conj.s ++ b.s} ;
PPos = {s = [] ; isTrue = True} ;
PNeg = {s = [] ; isTrue = False} ;
TSim = {s = [] ; isPres = True} ;
TAnt = {s = [] ; isPres = False} ;
and_Conj = {s = "and"} ;
or_Conj = {s = "or"} ;
every_Det = {s = "every" ; n = Sg} ;
in_Prep = {s = "in"} ;
on_Prep = {s = "on"} ;
with_Prep = {s = "with"} ;
i_Pron = {
s = table {Nom => "I" ; Acc => "me"} ;
a = Agr Sg Per1
} ;
youSg_Pron = {
s = \\_ => "you" ;
a = Agr Sg Per2
} ;
he_Pron = {
s = table {Nom => "he" ; Acc => "him"} ;
a = Agr Sg Per3
} ;
she_Pron = {
s = table {Nom => "she" ; Acc => "her"} ;
a = Agr Sg Per3
} ;
we_Pron = {
s = table {Nom => "we" ; Acc => "us"} ;
a = Agr Pl Per1
} ;
youPl_Pron = {
s = \\_ => "you" ;
a = Agr Pl Per2
} ;
they_Pron = {
s = table {Nom => "they" ; Acc => "them"} ;
a = Agr Pl Per3
} ;
whoSg_IP = {
s = table {Nom => "who" ; Acc => "whom"} ;
a = Agr Sg Per3
} ;
where_IAdv = {s = "where"} ;
why_IAdv = {s = "why"} ;
have_V2 = mkVerb "have" "has" "had" "had" "having" ** {c = []} ;
want_VV = regVerb "want" ;
}