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(* *********************************************************************)
(* *)
(* The Compcert verified compiler *)
(* *)
(* François Pottier, INRIA Paris-Rocquencourt *)
(* *)
(* Copyright Institut National de Recherche en Informatique et en *)
(* Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU Lesser General Public License as *)
(* published by the Free Software Foundation, either version 2.1 of *)
(* the License, or (at your option) any later version. *)
(* This file is also distributed under the terms of the *)
(* INRIA Non-Commercial License Agreement. *)
(* *)
(* *********************************************************************)
(* This module is in charge of reporting a syntax error after the pre_parser
has failed. *)
open Pre_parser.MenhirInterpreter
(* The parser keeps track of the last two tokens in a two-place buffer. *)
type 'a buffer =
| Zero
| One of 'a
| Two of 'a * (* most recent: *) 'a
(* [update buffer x] pushes [x] into [buffer], causing the buffer to slide. *)
val update: 'a buffer -> 'a -> 'a buffer
(* [report text buffer checkpoint] constructs an error message. The C source
code must be stored in the string [text]. The start and end positions of the
last two tokens that were read must be stored in [buffer]. The parser state
(i.e., the automaton's state and stack) must be recorded in the checkpoint
[checkpoint]. *)
val report:
string ->
(Lexing.position * Lexing.position) buffer ->
_ checkpoint ->
string
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