2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#) Copyright (c) 1991, 1993 The Regents of the University of California. All rights reserved.
37 * @(#)mksyntax.c 8.2 (Berkeley) 5/4/95
38 * $FreeBSD: head/bin/sh/mksyntax.c 246522 2013-02-07 22:42:33Z jilles $
42 * This program creates syntax.h and syntax.c.
57 struct synclass synclass[] = {
58 { "CWORD", "character is nothing special" },
59 { "CNL", "newline character" },
60 { "CBACK", "a backslash character" },
61 { "CSBACK", "a backslash character in single quotes" },
62 { "CSQUOTE", "single quote" },
63 { "CDQUOTE", "double quote" },
64 { "CENDQUOTE", "a terminating quote" },
65 { "CBQUOTE", "backwards single quote" },
66 { "CVAR", "a dollar sign" },
67 { "CENDVAR", "a '}' character" },
68 { "CLP", "a left paren in arithmetic" },
69 { "CRP", "a right paren in arithmetic" },
70 { "CEOF", "end of file" },
71 { "CCTL", "like CWORD, except it must be escaped" },
72 { "CSPCL", "these terminate a word" },
73 { "CIGN", "character should be ignored" },
79 * Syntax classes for is_ functions. Warning: if you add new classes
80 * you may have to change the definition of the is_in_name macro.
82 struct synclass is_entry[] = {
83 { "ISDIGIT", "a digit" },
84 { "ISUPPER", "an upper case letter" },
85 { "ISLOWER", "a lower case letter" },
86 { "ISUNDER", "an underscore" },
87 { "ISSPECL", "the name of a special parameter" },
91 static char writer[] = "\
93 * This file was generated by the mksyntax program.\n\
101 static void add_default(void);
102 static void finish(void);
103 static void init(const char *);
104 static void add(const char *, const char *);
105 static void output_type_macros(void);
108 main(int argc __unused, char **argv __unused)
114 /* Create output files */
115 if ((cfile = fopen("syntax.c", "w")) == NULL) {
119 if ((hfile = fopen("syntax.h", "w")) == NULL) {
123 fputs(writer, hfile);
124 fputs(writer, cfile);
126 fputs("#include <sys/cdefs.h>\n", hfile);
127 fputs("#include <limits.h>\n\n", hfile);
129 /* Generate the #define statements in the header file */
130 fputs("/* Syntax classes */\n", hfile);
131 for (i = 0 ; synclass[i].name ; i++) {
132 sprintf(buf, "#define %s %d", synclass[i].name, i);
134 for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07)
136 fprintf(hfile, "/* %s */\n", synclass[i].comment);
139 fputs("/* Syntax classes for is_ functions */\n", hfile);
140 for (i = 0 ; is_entry[i].name ; i++) {
141 sprintf(buf, "#define %s %#o", is_entry[i].name, 1 << i);
143 for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07)
145 fprintf(hfile, "/* %s */\n", is_entry[i].comment);
148 fputs("#define SYNBASE (1 - CHAR_MIN)\n", hfile);
149 fputs("#define PEOF -SYNBASE\n\n", hfile);
151 fputs("#define BASESYNTAX (basesyntax + SYNBASE)\n", hfile);
152 fputs("#define DQSYNTAX (dqsyntax + SYNBASE)\n", hfile);
153 fputs("#define SQSYNTAX (sqsyntax + SYNBASE)\n", hfile);
154 fputs("#define ARISYNTAX (arisyntax + SYNBASE)\n", hfile);
156 output_type_macros(); /* is_digit, etc. */
159 /* Generate the syntax tables. */
160 fputs("#include \"parser.h\"\n", cfile);
161 fputs("#include \"shell.h\"\n", cfile);
162 fputs("#include \"syntax.h\"\n\n", cfile);
164 fputs("/* syntax table used when not in quotes */\n", cfile);
170 add("\"", "CDQUOTE");
174 add("<>();&| \t", "CSPCL");
177 fputs("\n/* syntax table used when in double quotes */\n", cfile);
182 add("\"", "CENDQUOTE");
186 /* ':/' for tilde expansion, '-^]' for [a\-x] pattern ranges */
187 add("!*?[]=~:/-^", "CCTL");
190 fputs("\n/* syntax table used when in single quotes */\n", cfile);
195 add("'", "CENDQUOTE");
196 /* ':/' for tilde expansion, '-^]' for [a\-x] pattern ranges */
197 add("!*?[]=~:/-^", "CCTL");
200 fputs("\n/* syntax table used when in arithmetic */\n", cfile);
213 fputs("\n/* character classification table */\n", cfile);
215 add("0123456789", "ISDIGIT");
216 add("abcdefghijklmnopqrstuvwxyz", "ISLOWER");
217 add("ABCDEFGHIJKLMNOPQRSTUVWXYZ", "ISUPPER");
219 add("#?$!-*@", "ISSPECL");
227 * Output the header and declaration of a syntax table.
231 init(const char *name)
233 fprintf(hfile, "extern const char %s[];\n", name);
234 fprintf(cfile, "const char %s[SYNBASE + CHAR_MAX + 1] = {\n", name);
239 add_one(const char *key, const char *type)
241 fprintf(cfile, "\t[SYNBASE + %s] = %s,\n", key, type);
246 * Add default values to the syntax table.
252 add_one("PEOF", "CEOF");
253 add_one("CTLESC", "CCTL");
254 add_one("CTLVAR", "CCTL");
255 add_one("CTLENDVAR", "CCTL");
256 add_one("CTLBACKQ", "CCTL");
257 add_one("CTLBACKQ + CTLQUOTE", "CCTL");
258 add_one("CTLARI", "CCTL");
259 add_one("CTLENDARI", "CCTL");
260 add_one("CTLQUOTEMARK", "CCTL");
261 add_one("CTLQUOTEEND", "CCTL");
266 * Output the footer of a syntax table.
272 fputs("};\n", cfile);
277 * Add entries to the syntax table.
281 add(const char *p, const char *type)
286 case '\t': c = 't'; break;
287 case '\n': c = 'n'; break;
288 case '\'': c = '\''; break;
289 case '\\': c = '\\'; break;
292 fprintf(cfile, "\t[SYNBASE + '%c'] = %s,\n", c, type);
295 fprintf(cfile, "\t[SYNBASE + '\\%c'] = %s,\n", c, type);
301 * Output character classification macros (e.g. is_digit). If digits are
302 * contiguous, we can test for them quickly.
305 static const char *macro[] = {
306 "#define is_digit(c)\t((unsigned int)((c) - '0') <= 9)",
307 "#define is_eof(c)\t((c) == PEOF)",
308 "#define is_alpha(c)\t((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER))",
309 "#define is_name(c)\t((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER|ISUNDER))",
310 "#define is_in_name(c)\t((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER|ISUNDER|ISDIGIT))",
311 "#define is_special(c)\t((is_type+SYNBASE)[(int)c] & (ISSPECL|ISDIGIT))",
312 "#define digit_val(c)\t((c) - '0')",
317 output_type_macros(void)
321 for (pp = macro ; *pp ; pp++)
322 fprintf(hfile, "%s\n", *pp);