Splitted modifiers in own library

1 files changed, 23 insertions, 0 deletions

diff --git a/src/lib/modifiers/nasal.ml b/src/lib/modifiers/nasal.ml
new file mode 100644
index 0000000..da24863
--- /dev/null
+++ b/src/lib/modifiers/nasal.ml
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+(** The Nasal modifier transform a voyel followed by N and a consonant
+    into a nasal voyel.
+
+    Does this min that nasal voyel are not a distinct element, but just a
+    merge from two distinct elements ? *)
+let process
+  : 'a Sig.modifier
+  = fun (type el) m init ->
+    let module T = (val m:Sounds.T with type t = el) in
+    let (((v1, v2), c) , ending) = init in
+    let ending = Option.bind ending (fun x -> x) in
+    match ending with
+    | None -> init
+    | Some ending ->
+      match T.is_nasal ending with
+      | false -> init
+      | true ->
+        (* Remove the ending consonant, and transform the voyel into
+           the nasal form  *)
+        ( ( (T.nasal v1, T.nasal v2)
+          , c )
+        , None )
+