blob: 9fb4e46f4d4c4fa122db8f45140d46034bacd2f4 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
open Format
open Lexing
let parse_only = ref false
let dump = ref false
let dumpt = ref false
let ifile = ref ""
let set_var v s = v := s
let usage = "usage: mini-cpp [options] file.cpp"
let localisation pos =
let l = pos.pos_lnum in
let c = pos.pos_cnum - pos.pos_bol + 1 in
eprintf "File \"%s\", line %d, characters %d-%d:\n"
!ifile l (c-1) c
let localisation2 (pos1,pos2) =
let l = pos1.pos_lnum in
let c1 = pos1.pos_cnum - pos1.pos_bol + 1 in
let c2 = pos2.pos_cnum - pos2.pos_bol + 1 in
eprintf "File \"%s\", line %d, characters %d-%d:\n"
!ifile l c1 c2
let options = [
"--parse-only", Arg.Set parse_only, "Stops after parsing of the input file.";
"--dump", Arg.Set dump, "Dump the AST after parsing.";
"--dumpt", Arg.Set dumpt, "Dump the AST after typing."
]
let () =
Arg.parse options (set_var ifile) usage;
if !ifile = "" then (
eprintf "No input file\n@?";
exit 1);
if not (Filename.check_suffix !ifile ".cpp") then (
eprintf "Input files must have suffix .cpp\n@?";
Arg.usage options usage;
exit 1);
let f = open_in !ifile in
let buf = Lexing.from_channel f in
try
let p = Parser.prog Lexer.token buf in
let t = Typing.prog p in
close_in f;
if !dump then Pretty.print_prog p;
if !dumpt then Pretty_typing.print_prog t;
with
| Lexer.Lexing_error s ->
localisation (Lexing.lexeme_start_p buf);
eprintf "Lexical analysis error: %s@." s;
exit 1
| Parser.Error ->
localisation (Lexing.lexeme_start_p buf);
eprintf "Parsing error.@.";
exit 1
| Typing.Error (loc, msg) ->
localisation2 loc;
eprintf "%s" msg;
exit 1
| _ ->
eprintf "Unexpected error...@.";
exit 2
|
