Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 2 | Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum, |
| 3 | Amsterdam, The Netherlands. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
| 9 | provided that the above copyright notice appear in all copies and that |
| 10 | both that copyright notice and this permission notice appear in |
| 11 | supporting documentation, and that the names of Stichting Mathematisch |
| 12 | Centrum or CWI not be used in advertising or publicity pertaining to |
| 13 | distribution of the software without specific, written prior permission. |
| 14 | |
| 15 | STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| 16 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 17 | FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
| 18 | FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 21 | OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | |
| 23 | ******************************************************************/ |
| 24 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 25 | /* Parser generator main program */ |
| 26 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 27 | /* This expects a filename containing the grammar as argv[1] (UNIX) |
| 28 | or asks the console for such a file name (THINK C). |
| 29 | It writes its output on two files in the current directory: |
| 30 | - "graminit.c" gets the grammar as a bunch of initialized data |
| 31 | - "graminit.h" gets the grammar's non-terminals as #defines. |
| 32 | Error messages and status info during the generation process are |
| 33 | written to stdout, or sometimes to stderr. */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 34 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 35 | #include "pgenheaders.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 36 | #include "grammar.h" |
| 37 | #include "node.h" |
| 38 | #include "parsetok.h" |
| 39 | #include "pgen.h" |
| 40 | |
| 41 | int debugging; |
| 42 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 43 | /* Forward */ |
| 44 | grammar *getgrammar PROTO((char *filename)); |
Guido van Rossum | d6a15ad | 1991-06-24 22:30:42 +0000 | [diff] [blame] | 45 | #ifdef macintosh |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 46 | int main PROTO((int, char **)); |
| 47 | char *askfile PROTO((void)); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 48 | #endif |
| 49 | |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 50 | void |
| 51 | goaway(sts) |
| 52 | int sts; |
| 53 | { |
| 54 | exit(sts); |
| 55 | } |
| 56 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 57 | int |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 58 | main(argc, argv) |
| 59 | int argc; |
| 60 | char **argv; |
| 61 | { |
| 62 | grammar *g; |
| 63 | node *n; |
| 64 | FILE *fp; |
| 65 | char *filename; |
| 66 | |
Guido van Rossum | d6a15ad | 1991-06-24 22:30:42 +0000 | [diff] [blame] | 67 | #ifdef macintosh |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 68 | filename = askfile(); |
| 69 | #else |
| 70 | if (argc != 2) { |
| 71 | fprintf(stderr, "usage: %s grammar\n", argv[0]); |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 72 | goaway(2); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 73 | } |
| 74 | filename = argv[1]; |
| 75 | #endif |
| 76 | g = getgrammar(filename); |
| 77 | fp = fopen("graminit.c", "w"); |
| 78 | if (fp == NULL) { |
| 79 | perror("graminit.c"); |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 80 | goaway(1); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 81 | } |
| 82 | printf("Writing graminit.c ...\n"); |
| 83 | printgrammar(g, fp); |
| 84 | fclose(fp); |
| 85 | fp = fopen("graminit.h", "w"); |
| 86 | if (fp == NULL) { |
| 87 | perror("graminit.h"); |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 88 | goaway(1); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 89 | } |
| 90 | printf("Writing graminit.h ...\n"); |
| 91 | printnonterminals(g, fp); |
| 92 | fclose(fp); |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 93 | goaway(0); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 94 | } |
| 95 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 96 | grammar * |
| 97 | getgrammar(filename) |
| 98 | char *filename; |
| 99 | { |
| 100 | FILE *fp; |
| 101 | node *n; |
| 102 | grammar *g0, *g; |
| 103 | |
| 104 | fp = fopen(filename, "r"); |
| 105 | if (fp == NULL) { |
| 106 | perror(filename); |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 107 | goaway(1); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 108 | } |
| 109 | g0 = meta_grammar(); |
| 110 | n = NULL; |
| 111 | parsefile(fp, filename, g0, g0->g_start, (char *)NULL, (char *)NULL, &n); |
| 112 | fclose(fp); |
| 113 | if (n == NULL) { |
| 114 | fprintf(stderr, "Parsing error.\n"); |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 115 | goaway(1); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 116 | } |
| 117 | g = pgen(n); |
| 118 | if (g == NULL) { |
| 119 | printf("Bad grammar.\n"); |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 120 | goaway(1); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 121 | } |
| 122 | return g; |
| 123 | } |
| 124 | |
Guido van Rossum | d6a15ad | 1991-06-24 22:30:42 +0000 | [diff] [blame] | 125 | #ifdef macintosh |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 126 | char * |
| 127 | askfile() |
| 128 | { |
| 129 | char buf[256]; |
| 130 | static char name[256]; |
| 131 | printf("Input file name: "); |
| 132 | if (fgets(buf, sizeof buf, stdin) == NULL) { |
| 133 | printf("EOF\n"); |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 134 | goaway(1); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 135 | } |
Guido van Rossum | 706eea8 | 1990-12-20 23:11:02 +0000 | [diff] [blame] | 136 | /* XXX The (unsigned char *) case is needed by THINK C 3.0 */ |
| 137 | if (sscanf(/*(unsigned char *)*/buf, " %s ", name) != 1) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 138 | printf("No file\n"); |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 139 | goaway(1); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 140 | } |
| 141 | return name; |
| 142 | } |
| 143 | #endif |
| 144 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 145 | void |
| 146 | fatal(msg) |
| 147 | char *msg; |
| 148 | { |
| 149 | fprintf(stderr, "pgen: FATAL ERROR: %s\n", msg); |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 150 | goaway(1); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 151 | } |
| 152 | |
Guido van Rossum | 7ebb23c | 1992-03-27 17:31:35 +0000 | [diff] [blame] | 153 | #ifdef macintosh |
| 154 | /* ARGSUSED */ |
| 155 | int |
| 156 | guesstabsize(path) |
| 157 | char *path; |
| 158 | { |
| 159 | return 4; |
| 160 | } |
| 161 | #endif |
| 162 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 163 | /* XXX TO DO: |
| 164 | - check for duplicate definitions of names (instead of fatal err) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 165 | */ |