1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 *
26 * escmain.c -- main routine for esc, the eversholt compiler
27 *
28 * argument processing and the general flow through all the other
29 * modules is driven by this file.
30 */
31
32 #include <stdio.h>
33 #include <string.h>
34 #ifdef sun
35 #include <stdlib.h>
36 #else
37 #include <getopt.h>
38 #endif /* sun */
39 #include "out.h"
40 #include "stats.h"
41 #include "alloc.h"
42 #include "stable.h"
43 #include "literals.h"
44 #include "lut.h"
45 #include "esclex.h"
46 #include "eftwrite.h"
47 #include "ptree.h"
48 #include "tree.h"
49 #include "check.h"
50 #include "version.h"
51
52 /* stuff exported by yacc-generated parsers */
53 extern void yyparse(void);
54 extern int yydebug;
55
56 /*
57 * This external definition has to be here. If we put it in literals.h
58 * lint complains about the declaration not being used within the block
59 * when compiling literals.c.
60 */
61 extern void literals_init(void);
62
63 static const char *Usage =
64 "[-SYdghpqvy] [-Dname[=def]] [-I dir] [-Uname] [-o outfile] esc-files...";
65 static const char *Help =
66 "\tinput files are run through cpp and concatenated.\n"
67 "\t-D name[=def] Pass to cpp\n"
68 "\t-I dir Pass to cpp\n"
69 "\t-S Print stats for compiler memory usage, etc.\n"
70 "\t-U name Pass to cpp\n"
71 "\t-Y Enable parser debug output\n"
72 "\t-d Enable general debug output\n"
73 "\t-g Print generated iterators (use with -p)\n"
74 "\t-h Print this help message\n"
75 "\t-o outfile Emit compiled EFT to \"outfile\"\n"
76 "\t-p Print complete parse tree\n"
77 "\t-q Quiet mode: suppress warnings\n"
78 "\t-v Enable verbose output\n"
79 "\t-y Enable lexer debug output";
80
81 int Debug;
82 int Verbose;
83 int Warn = 1; /* the esc compiler should issue language warnings */
84
85 extern int Pchildgen; /* flag to ptree for printing generated iterators */
86
87 #define MAXARGS 8192
88 char Args[MAXARGS];
89
90 #define MAXCPPARGS 4000
91 static char Cppargs[MAXCPPARGS];
92
93 int
main(int argc,char * argv[])94 main(int argc, char *argv[])
95 {
96 char flagbuf[] = " -D";
97 char **av;
98 int c;
99 int stats = 0;
100 int lexecho = 0;
101 const char *outfile = NULL;
102 int count;
103 int i;
104 int pflag = 0;
105
106 alloc_init();
107 out_init(argv[0]);
108 stats_init(1); /* extended stats always enabled for esc */
109 stable_init(0);
110 literals_init();
111 lut_init();
112 tree_init();
113 eftwrite_init();
114
115 /* built a best effort summary of args for eftwrite() */
116 count = 0;
117 for (i = 1; i < argc; i++) {
118 char *ptr = argv[i];
119
120 if (count < MAXARGS - 1)
121 Args[count++] = ' ';
122
123 while (count < MAXARGS - 1 && *ptr)
124 Args[count++] = *ptr++;
125
126 }
127 Args[count] = '\0';
128
129
130
131 while ((c = getopt(argc, argv, "D:I:SU:Ydgho:pqvy")) != EOF) {
132 switch (c) {
133 case 'D':
134 case 'I':
135 case 'U':
136 if (strlen(optarg) + strlen(Cppargs) + 4 >= MAXCPPARGS)
137 out(O_DIE, "cpp args too long (max %d bytes)",
138 MAXCPPARGS);
139 flagbuf[2] = c;
140 (void) strcat(Cppargs, flagbuf);
141 (void) strcat(Cppargs, optarg);
142 break;
143
144 case 'S':
145 stats++;
146 break;
147
148 case 'Y':
149 yydebug++;
150 break;
151
152 case 'd':
153 Debug++;
154 break;
155
156 case 'g':
157 Pchildgen++;
158 break;
159
160 case 'h':
161 case '?':
162 out(O_PROG, "eversholt compiler version %d.%d",
163 VERSION_MAJOR, VERSION_MINOR);
164 out(O_DIE|O_USAGE, "%s\n%s", Usage, Help);
165 /*NOTREACHED*/
166 break;
167
168 case 'o':
169 outfile = optarg;
170 break;
171
172 case 'p':
173 pflag++;
174 break;
175
176 case 'q':
177 Warn = 0;
178 break;
179
180 case 'v':
181 Verbose++;
182 break;
183
184 case 'y':
185 lexecho++;
186 break;
187
188 default:
189 out(O_DIE|O_USAGE, Usage);
190 /*NOTREACHED*/
191 }
192 }
193
194 out(O_PROG|O_VERB, "eversholt compiler version %d.%d",
195 VERSION_MAJOR, VERSION_MINOR);
196
197 argc -= optind;
198 av = &argv[optind];
199
200 if (argc < 1) {
201 out(O_ERR, "no esc source files given");
202 out(O_DIE|O_USAGE, Usage);
203 /*NOTREACHED*/
204 }
205
206 lex_init(av, Cppargs, lexecho);
207 check_init();
208 yyparse();
209 (void) lex_fini();
210
211 tree_report();
212
213 if (count = out_errcount())
214 out(O_DIE, "%d language error%s encountered, exiting.",
215 OUTS(count));
216
217 if (outfile)
218 eftwrite(outfile);
219
220 if (pflag)
221 ptree_name_iter(O_OK, tree_root(NULL));
222
223 if (stats) {
224 out(O_OK, "Stats:");
225 stats_publish();
226 }
227
228 out_exit(0);
229 /*NOTREACHED*/
230 return (0);
231 }
232