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
72
|
#include "interp.h"
#include "parser.h"
#include "sexp.h"
int main(int argc, char **argv) {
int mainret = 0;
Interp interp;
Interp_init(&interp);
if (argc > 2) {
fprintf(stderr, "Usage: bamboo-lisp [file.lisp]\n");
return -1;
}
if (argc == 2) {
const char *filename = argv[1];
SExpRef ret = Interp_load_file(&interp, filename);
if (Interp_ref(&interp, ret)->type == kErrSignal) {
fprintf(stderr, "Error: %s", Interp_ref(&interp, ret)->str);
mainret = -1; goto end;
}
if (Interp_ref(&interp, ret)->type == kExceptionSignal) {
const char *exception_str = lisp_to_string(&interp, Interp_ref(&interp, ret)->ret);
fprintf(stderr, "Uncatched exception: %s\n", exception_str);
free((void*)exception_str);
mainret = -1; goto end;
}
if (Interp_ref(&interp, ret)->type == kBreakSignal
|| Interp_ref(&interp, ret)->type == kContinueSignal
|| Interp_ref(&interp, ret)->type == kReturnSignal) {
fprintf(stderr, "Error: unexpected control flow signal.\n");
mainret = -1; goto end;
}
}
#ifdef WITHREADLINE
Parser_set_readline(interp.parser);
#else
Parser_set_file(interp.parser, stdin);
#endif
SExpRef sexp, res;
ParseResult parse_result;
while (1) {
#ifndef WITHREADLINE
printf(">>> ");
fflush(stdout);
#endif
parse_result = parse_sexp(interp.parser);
if (parse_result.errmsg != NULL) {
if (Parser_peek(interp.parser) == EOF) goto end;
fprintf(stderr, "Parsing error: %s", parse_result.errmsg);
#ifdef WITHREADLINE
free((void*)interp.parser->string);
Parser_set_readline(interp.parser);
#endif
continue;
}
res = lisp_eval(&interp, parse_result.val, false);
if (Interp_ref(&interp, res)->type == kErrSignal) {
fprintf(stderr, "Eval error: %s", Interp_ref(&interp, res)->str);
continue;
}
if (Interp_ref(&interp, res)->type == kBreakSignal
|| Interp_ref(&interp, res)->type == kContinueSignal
|| Interp_ref(&interp, res)->type == kReturnSignal) {
fprintf(stderr, "Eval error: unexpected control flow signal.\n");
continue;
}
lisp_print(&interp, res, stdout);
}
end:
Interp_free(&interp);
return mainret;
}
|
