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[Caml-list] Lexing.lexeme_start_p broken?
- Scott Duckworth
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Date: | 2004-09-17 (22:07) |
From: | Scott Duckworth <duckwos@c...> |
Subject: | [Caml-list] Lexing.lexeme_start_p broken? |
I can't seem to get the function Lexing.lexeme_start_p to return a position with correct information in it. Here is my code (test.mll): { open Lexing } rule scan = parse eof { raise End_of_file } | _ as x { let pos = lexeme_start_p lexbuf in Printf.printf "ASCII %d at line %d col %d\n" (int_of_char x) pos.pos_lnum pos.pos_bol; scan lexbuf } { try scan (from_channel stdin) with End_of_file -> () } I do the following, but I always get incorrect output: [duckwos@chef]$ ocamllex test.mll 3 states, 257 transitions, table size 1046 bytes [duckwos@chef]$ ocamlc -o test test.ml [duckwos@chef]$ ./test << EOF > position > does not > change > EOF ASCII 112 at line 1 col 0 ASCII 111 at line 1 col 0 ASCII 115 at line 1 col 0 ASCII 105 at line 1 col 0 ASCII 116 at line 1 col 0 ASCII 105 at line 1 col 0 ASCII 111 at line 1 col 0 ASCII 110 at line 1 col 0 ASCII 10 at line 1 col 0 ASCII 100 at line 1 col 0 ASCII 111 at line 1 col 0 ASCII 101 at line 1 col 0 ASCII 115 at line 1 col 0 ASCII 32 at line 1 col 0 ASCII 110 at line 1 col 0 ASCII 111 at line 1 col 0 ASCII 116 at line 1 col 0 ASCII 10 at line 1 col 0 ASCII 99 at line 1 col 0 ASCII 104 at line 1 col 0 ASCII 97 at line 1 col 0 ASCII 110 at line 1 col 0 ASCII 103 at line 1 col 0 ASCII 101 at line 1 col 0 ASCII 10 at line 1 col 0 [duckwos@chef]$ Any ideas why this is happening? I get the same results even if I am reading from an actual file opened with Lexing.from_file (open_in "filename"). One more thing. How does the pos_fname field in the position type get it's value if there is no way for the Lexing module to know the file name? Am I missing something here? Thanks in advance! -- Scott Duckworth ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners