Home My Page Projects Code Snippets Project Openings diderot
Summary Activity Tracker Tasks SCM

SCM Repository

[diderot] Annotation of /trunk/src/parser/parser.sml
ViewVC logotype

Annotation of /trunk/src/parser/parser.sml

Parent Directory Parent Directory | Revision Log Revision Log


Revision 14 - (view) (download)

1 : jhr 14 (* parser.sml
2 :     *
3 :     * COPYRIGHT (c) 2010 The Diderot Project (http://diderot.cs.uchicago.edu)
4 :     * All rights reserved.
5 :     *
6 :     * Parser glue.
7 :     *)
8 :    
9 :     structure Parser : sig
10 :    
11 :     (* parse a file; return NONE if there are syntax errors *)
12 :     val parseFile : (Error.err_stream * TextIO.instream) -> ParseTree.program option
13 :    
14 :     end = struct
15 :    
16 :     (* glue together the lexer and parser *)
17 :     structure DiderotParser = DiderotParseFn(DiderotLex)
18 :    
19 :     (* error function for lexers *)
20 :     fun lexErr errStrm (pos, msg) = Error.errorAt(errStrm, (pos, pos), msg)
21 :    
22 :     (* error function for parsers *)
23 :     val parseErr = Error.parseError DiderotTokens.toString
24 :    
25 :     (* parse a file, returning a parse tree *)
26 :     fun parseFile (errStrm, file) = let
27 :     fun get () = TextIO.input file
28 :     val lexer = DiderotLex.lex (Error.sourceMap errStrm) (lexErr errStrm)
29 :     in
30 :     case DiderotParser.parse lexer (DiderotLex.streamify get)
31 :     of (SOME pt, _, []) => (TextIO.closeIn file; SOME pt)
32 :     | (_, _, errs) => (
33 :     TextIO.closeIn file;
34 :     List.app (parseErr errStrm) errs;
35 :     NONE)
36 :     (* end case *)
37 :     end
38 :    
39 :     end

root@smlnj-gforge.cs.uchicago.edu
ViewVC Help
Powered by ViewVC 1.0.0