resource examples

doc/tutorial/resource/MorphoIta.gf

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+--# -path=.:prelude
+
+  -- This is a simple Italian resource morphology for the GF tutorial.
+
+  resource MorphoIta = open Prelude in {
+
+    param
+      Number = Sg | Pl ;
+      Gender = Masc | Fem ;
+
+    oper
+      Noun      : Type = {s : Number => Str ; g : Gender} ; 
+      Adjective : Type = {s : Gender => Number => Str} ;
+
+  -- we will only use present indicative third person verb forms
+
+      Verb      : Type = {s : Number => Str} ;
+
+  -- this function takes the gender and both singular and plural forms
+
+      mkNoun : Gender -> Str -> Str -> Noun = \g,vino,vini -> {
+        s = table {
+          Sg => vino ;
+          Pl => vini
+          } ;
+        g = g
+        } ;
+
+  -- this function takes the singular form
+
+      regNoun : Str -> Noun = \vino -> 
+        let 
+          vin = init vino ;
+          o   = last vino
+        in
+        case o of {
+          "a"       => mkNoun Fem  vino (vin + "e") ; -- pizza
+          "o" | "e" => mkNoun Masc vino (vin + "i") ; -- vino, pane
+          _         => mkNoun Masc vino vino          -- tram
+          } ;
+
+  -- to make nouns such as "carne", "università" feminine
+
+     femNoun : Noun -> Noun = \mano -> {
+       s = mano.s ;
+       g = Fem
+       } ;
+
+  -- this takes both genders and numbers
+
+     mkAdjective : (x1,_,_,x4 : Str) -> Adjective = \nero,nera,neri,nere -> {
+       s = table {
+         Masc => (mkNoun Masc nero neri).s ;
+         Fem  => (mkNoun Fem  nera nere).s
+         } 
+       } ;
+
+  -- this takes the masculine singular form
+
+     regAdjective : Str -> Adjective = \nero ->
+       let ner = init nero in
+       case last nero of {
+         "o" => mkAdjective (ner + "o") (ner + "a") (ner + "i") (ner + "e") ;
+         "e" => mkAdjective (ner + "e") (ner + "e") (ner + "i") (ner + "i") ;
+         _   => mkAdjective nero nero nero nero
+         } ;
+
+  -- this function takes the singular and plural forms
+
+      mkVerb : Str -> Str -> Verb = \ama,amano -> {
+        s = table {
+          Sg => ama ;
+          Pl => amano
+          }
+        } ;
+
+  -- this function takes the infinitive form
+
+      regVerb : Str -> Verb = \amare -> 
+        let am = Predef.tk 3 amare in
+        case Predef.dp 3 amare of {
+          "ere" => mkVerb (am + "e")    (am + "ono") ;    -- premere
+          "ire" => mkVerb (am + "isce") (am + "iscono") ; -- finire
+          _     => mkVerb (am + "a")    (am + "ano")      -- amare
+        } ;
+
+  }