Mercurial > hg > index.cgi
annotate lwbasic/main.c @ 70:ceab04fd2969
Fixed premature installation of external reference under UNDEFEXTERN pragma; should not resolve to external references until after the initial parsing pass
| author | lost@l-w.ca |
|---|---|
| date | Sun, 10 Apr 2011 13:15:12 -0600 |
| parents | bcd532a90e53 |
| children |
| rev | line source |
|---|---|
| 22 | 1 /* |
| 2 main.c | |
| 3 | |
| 4 Copyright © 2011 William Astle | |
| 5 | |
| 6 This file is part of LWTOOLS. | |
| 7 | |
| 8 LWTOOLS is free software: you can redistribute it and/or modify it under the | |
| 9 terms of the GNU General Public License as published by the Free Software | |
| 10 Foundation, either version 3 of the License, or (at your option) any later | |
| 11 version. | |
| 12 | |
| 13 This program is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 16 more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License along with | |
| 19 this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 */ | |
| 21 | |
| 22 /* | |
| 23 main program startup handling for lwbasic | |
| 24 */ | |
| 25 | |
| 26 #include <stdlib.h> | |
| 27 #include <stdio.h> | |
| 25 | 28 #include <stdarg.h> |
| 22 | 29 |
| 30 #include <lw_cmdline.h> | |
| 31 #include <lw_string.h> | |
| 32 #include <lw_alloc.h> | |
| 33 | |
| 25 | 34 #define __main_c_seen__ |
| 22 | 35 #include "lwbasic.h" |
| 36 | |
| 37 #define PROGVER "lwbasic from " PACKAGE_STRING | |
| 38 | |
| 39 static struct lw_cmdline_options options[] = | |
| 40 { | |
| 41 { "output", 'o', "FILE", 0, "Output to FILE"}, | |
| 42 { "debug", 'd', "LEVEL", lw_cmdline_opt_optional, "Set debug mode"}, | |
| 43 { 0 } | |
| 44 }; | |
| 45 | |
| 46 static int parse_opts(int key, char *arg, void *data) | |
| 47 { | |
| 48 cstate *state = data; | |
| 49 | |
| 50 switch (key) | |
| 51 { | |
| 52 case 'o': | |
| 53 if (state -> output_file) | |
| 54 lw_free(state -> output_file); | |
| 55 state -> output_file = lw_strdup(arg); | |
| 56 break; | |
| 57 | |
| 58 case 'd': | |
| 59 if (!arg) | |
| 60 state -> debug_level = 50; | |
| 61 else | |
| 62 state -> debug_level = atoi(arg); | |
| 63 break; | |
| 64 | |
| 65 case lw_cmdline_key_end: | |
| 66 return 0; | |
| 67 | |
| 68 case lw_cmdline_key_arg: | |
| 69 if (state -> input_file) | |
| 70 { | |
| 71 fprintf(stderr, "Already have an input file; ignoring %s\n", arg); | |
| 72 } | |
| 73 else | |
| 74 { | |
| 75 state -> input_file = lw_strdup(arg); | |
| 76 } | |
| 77 break; | |
| 78 | |
| 79 default: | |
| 80 return lw_cmdline_err_unknown; | |
| 81 } | |
| 82 | |
| 83 return 0; | |
| 84 } | |
| 85 | |
| 86 static struct lw_cmdline_parser cmdline_parser = | |
| 87 { | |
| 88 options, | |
| 89 parse_opts, | |
| 90 "INPUTFILE", | |
| 91 "lwbasic, a compiler for a dialect of Basic\vPlease report bugs to lost@l-w.ca.", | |
| 92 PROGVER | |
| 93 }; | |
| 94 | |
|
30
bcd532a90e53
Renamed "compiler" to "parser" for more consistent terminology
lost@l-w.ca
parents:
25
diff
changeset
|
95 extern void parser(cstate *state); |
| 25 | 96 |
| 22 | 97 int main(int argc, char **argv) |
| 98 { | |
| 99 cstate state = { 0 }; | |
| 100 | |
| 101 lw_cmdline_parse(&cmdline_parser, argc, argv, 0, 0, &state); | |
| 102 | |
|
30
bcd532a90e53
Renamed "compiler" to "parser" for more consistent terminology
lost@l-w.ca
parents:
25
diff
changeset
|
103 parser(&state); |
| 25 | 104 |
| 22 | 105 exit(0); |
| 106 } | |
| 25 | 107 |
| 108 void lwb_error(const char *fmt, ...) | |
| 109 { | |
| 110 va_list args; | |
| 111 | |
| 112 va_start(args, fmt); | |
| 113 vfprintf(stderr, fmt, args); | |
| 114 va_end(args); | |
| 115 | |
| 116 exit(1); | |
| 117 } |