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|
(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(* $Id$ *)
(* Entry points in the parser *)
open Location
(* Skip tokens to the end of the phrase *)
let rec skip_phrase lexbuf =
try
match Lexer.token lexbuf with
Parser.SEMISEMI | Parser.EOF -> ()
| _ -> skip_phrase lexbuf
with
| Lexer.Error (Lexer.Unterminated_comment, _, _) -> ()
| Lexer.Error (Lexer.Unterminated_string, _, _) -> ()
| Lexer.Error (Lexer.Unterminated_string_in_comment, _, _) -> ()
| Lexer.Error (Lexer.Illegal_character,_,_) -> skip_phrase lexbuf
;;
let maybe_skip_phrase lexbuf =
if Parsing.is_current_lookahead Parser.SEMISEMI
or Parsing.is_current_lookahead Parser.EOF
then ()
else skip_phrase lexbuf
let wrap parsing_fun lexbuf =
try
let ast = parsing_fun Lexer.token lexbuf in
Parsing.clear_parser();
ast
with
| Lexer.Error(Lexer.Unterminated_comment, _, _) as err -> raise err
| Lexer.Error(Lexer.Unterminated_string, _, _) as err -> raise err
| Lexer.Error(Lexer.Unterminated_string_in_comment, _, _) as err -> raise err
| Lexer.Error(Lexer.Illegal_character, _, _) as err ->
if !Location.input_name = "" then skip_phrase lexbuf;
raise err
| Syntaxerr.Error _ as err ->
if !Location.input_name = "" then maybe_skip_phrase lexbuf;
raise err
| Parsing.Parse_error | Syntaxerr.Escape_error ->
let loc = { loc_start = Lexing.lexeme_start lexbuf;
loc_end = Lexing.lexeme_end lexbuf;
loc_ghost = false } in
if !Location.input_name = ""
then maybe_skip_phrase lexbuf;
raise(Syntaxerr.Error(Syntaxerr.Other loc))
;;
let implementation = wrap Parser.implementation
and interface = wrap Parser.interface
and toplevel_phrase = wrap Parser.toplevel_phrase
and use_file = wrap Parser.use_file
|
