Add Grammatical Framework

samples/Grammatical Framework/FoodsMlt.gf

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+-- (c) 2013 John J. Camilleri under LGPL
+
+concrete FoodsMlt of Foods = open Prelude in {
+  flags coding=utf8 ;
+
+  lincat
+    Comment = SS ;
+    Quality = {s : Gender => Number => Str} ;
+    Kind = {s : Number => Str ; g : Gender} ;
+    Item = {s : Str ; g : Gender ; n : Number} ;
+
+  lin
+    -- Pred item quality = ss (item.s ++ copula item.n item.g ++ quality.s ! item.g ! item.n) ;
+    Pred item quality = ss (item.s ++ quality.s ! item.g ! item.n) ;
+
+    This kind = det Sg "dan" "din" kind ;
+    That kind = det Sg "dak" "dik" kind ;
+    These kind = det Pl "dawn" "" kind ;
+    Those kind = det Pl "dawk" "" kind ;
+
+    Mod quality kind = {
+      s = \\n => kind.s ! n ++ quality.s ! kind.g ! n ;
+      g = kind.g
+      } ;
+
+    Wine = noun "inbid" "inbejjed" Masc ;
+    Cheese = noun "ġobon" "ġobniet" Masc ;
+    Fish = noun "ħuta" "ħut" Fem ;
+    Pizza = noun "pizza" "pizzez" Fem ;
+
+    Very qual = {s = \\g,n => qual.s ! g ! n ++ "ħafna"} ;
+
+    Warm = adjective "sħun" "sħuna" "sħan" ;
+    Expensive = adjective "għali" "għalja" "għaljin" ;
+    Delicious = adjective "tajjeb" "tajba" "tajbin" ;
+    Boring = uniAdj "tad-dwejjaq" ;
+    Fresh = regAdj "frisk" ;
+    Italian = regAdj "Taljan" ;
+
+  param
+    Number = Sg | Pl ;
+    Gender = Masc | Fem ;
+
+  oper
+    --Create an adjective (full function)
+    --Params: Sing Masc, Sing Fem, Plural
+    adjective : (_,_,_ : Str) -> {s : Gender => Number => Str} = \iswed,sewda,suwed -> {
+      s = table {
+	Masc => table {
+	  Sg => iswed ;
+	  Pl => suwed
+	  } ;
+	Fem => table {
+	  Sg => sewda ;
+	  Pl => suwed
+	  }
+	}
+      } ;
+
+    --Create a regular adjective
+    --Param: Sing Masc
+    regAdj : Str -> {s : Gender => Number => Str} = \frisk ->
+      adjective frisk (frisk + "a") (frisk + "i") ;
+
+    --Create a "uni-adjective" eg tal-buzz
+    --Param: Sing Masc
+    uniAdj : Str -> {s : Gender => Number => Str} = \uni ->
+      adjective uni uni uni ;
+
+    --Create a noun
+    --Params: Singular, Plural, Gender (inherent)
+    noun : Str -> Str -> Gender -> {s : Number => Str ; g : Gender} = \ktieb,kotba,g -> {
+      s = table {
+	Sg => ktieb ;
+	Pl => kotba
+	} ;
+      g = g
+      } ;
+
+    --Copula is a linking verb
+    --Params: Number, Gender
+    -- copula : Number -> Gender -> Str = \n,g -> case n of {
+    --   Sg => case g of { Masc => "huwa" ; Fem => "hija" } ;
+    --   Pl => "huma"
+    --   } ;
+
+    --Create an article, taking into account first letter of next word
+    article = pre {
+      "a"|"e"|"i"|"o"|"u" => "l-" ;
+      --cons@("ċ"|"d"|"n"|"r"|"s"|"t"|"x"|"ż") => "i" + cons + "-" ;
+      _ => "il-"
+      } ;
+
+    --Create a determinant
+    --Params: Sg/Pl, Masc, Fem
+    det : Number -> Str -> Str -> {s : Number => Str ; g : Gender} -> {s : Str ; g : Gender ; n : Number} = \n,m,f,cn -> {
+      s = case n of {
+	Sg => case cn.g of {Masc => m ; Fem => f}; --string
+	Pl => m --default to masc
+	} ++ article ++ cn.s ! n ;
+      g = cn.g ; --gender
+      n = n --number
+      } ;
+
+}