1 files changed, 42 insertions, 0 deletions
diff --git a/lib/qparser/analyzer.ml b/lib/qparser/analyzer.ml
new file mode 100644
index 0000000..da1adbf
--- /dev/null
+++ b/lib/qparser/analyzer.ml
@@ -0,0 +1,42 @@
+(** 
+    Run the QSP parser and apply the analyzer over it.
+
+    See [syntax/S]
+ *)
+let parse :
+    (module Qsp_syntax.S.Analyzer with type Location.repr = 'a) ->
+    Lexbuf.t ->
+    ('a, Qsp_syntax.Report.t) Result.t =
+ fun (type a) (module S : Qsp_syntax.S.Analyzer with type Location.repr = a) ->
+  let module Parser = Parser.Make (S) in
+  let module IncrementalParser =
+    Interpreter.Interpreter (Parser.MenhirInterpreter) in
+  fun l ->
+    let lexer = Lexbuf.tokenize Lexer.token l in
+
+    let init = Parser.Incremental.main (fst (Lexbuf.positions l)) in
+
+    IncrementalParser.of_lexbuf lexer l init
+    |> Result.map_error (fun e ->
+           let message =
+             match e.IncrementalParser.code with
+             | Interpreter.InvalidSyntax -> "Invalid Syntax"
+             | Interpreter.UnrecoverableError -> "UnrecoverableError"
+             | Interpreter.MenhirCode c ->
+                 let message_content =
+                   try Parser_messages.message c
+                   with Not_found ->
+                     String.concat "" [ "(Error code "; string_of_int c; ")" ]
+                 in
+
+                 String.concat "" [ String.trim @@ message_content ]
+           in
+           let report =
+             Qsp_syntax.Report.error (e.start_pos, e.end_pos) message
+           in
+
+           (* Discard the remaining file to read. The parser is now in a blank
+              state, it does not make sense to keep feeding it with the new
+              tokens. *)
+           Lexer.discard l;
+           report)