adamc@0: (* Copyright (c) 2008, Adam Chlipala
adamc@0:  * All rights reserved.
adamc@0:  *
adamc@0:  * Redistribution and use in source and binary forms, with or without
adamc@0:  * modification, are permitted provided that the following conditions are met:
adamc@0:  *
adamc@0:  * - Redistributions of source code must retain the above copyright notice,
adamc@0:  *   this list of conditions and the following disclaimer.
adamc@0:  * - Redistributions in binary form must reproduce the above copyright notice,
adamc@0:  *   this list of conditions and the following disclaimer in the documentation
adamc@0:  *   and/or other materials provided with the distribution.
adamc@0:  * - The names of contributors may not be used to endorse or promote products
adamc@0:  *   derived from this software without specific prior written permission.
adamc@0:  *
adamc@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@0:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@0:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@0:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
adamc@0:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@0:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@0:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@0:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@0:  * POSSIBILITY OF SUCH DAMAGE.
adamc@0:  *)
adamc@0: 
adamc@0: signature ERROR_MSG = sig
adamc@0: 
adamc@0:     type pos = {line : int,
adamc@0:                 char : int}
adamc@0:            
adamc@0:     type span = {file : string,
adamc@0:                  first : pos,
adamc@0:                  last : pos}
adamc@0: 
adamc@0:     type 'a located = 'a * span
adamc@0: 
adamc@1:     val posToString : pos -> string
adamc@1:     val spanToString : span -> string
adamc@1: 
adamc@3:     val dummyPos : pos
adamc@3:     val dummySpan : span
adamc@3: 
adamc@1:     val resetPositioning : string -> unit
adamc@1:     val newline : int -> unit
adamc@1:     val lastLineStart : unit -> int
adamc@1:     val posOf : int -> pos
adamc@1:     val spanOf : int * int -> span
adamc@1: 
adamc@1:     val resetErrors : unit -> unit
adamc@1:     val anyErrors : unit -> bool
adamc@1:     val error : string -> unit
adamc@1:     val errorAt : span -> string -> unit
adamc@1:     val errorAt' : int * int -> string -> unit
adamc@0: end