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
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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. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#) Copyright (c) 1991, 1993 The Regents of the University of California. All rights reserved.
33 * @(#)mksyntax.c 8.2 (Berkeley) 5/4/95
34 * $FreeBSD: head/bin/sh/mksyntax.c 246522 2013-02-07 22:42:33Z jilles $
38 * This program creates syntax.h and syntax.c.
53 struct synclass synclass[] = {
54 { "CWORD", "character is nothing special" },
55 { "CNL", "newline character" },
56 { "CBACK", "a backslash character" },
57 { "CSBACK", "a backslash character in single quotes" },
58 { "CSQUOTE", "single quote" },
59 { "CDQUOTE", "double quote" },
60 { "CENDQUOTE", "a terminating quote" },
61 { "CBQUOTE", "backwards single quote" },
62 { "CVAR", "a dollar sign" },
63 { "CENDVAR", "a '}' character" },
64 { "CLP", "a left paren in arithmetic" },
65 { "CRP", "a right paren in arithmetic" },
66 { "CEOF", "end of file" },
67 { "CCTL", "like CWORD, except it must be escaped" },
68 { "CSPCL", "these terminate a word" },
69 { "CIGN", "character should be ignored" },
75 * Syntax classes for is_ functions. Warning: if you add new classes
76 * you may have to change the definition of the is_in_name macro.
78 struct synclass is_entry[] = {
79 { "ISDIGIT", "a digit" },
80 { "ISUPPER", "an upper case letter" },
81 { "ISLOWER", "a lower case letter" },
82 { "ISUNDER", "an underscore" },
83 { "ISSPECL", "the name of a special parameter" },
87 static char writer[] = "\
89 * This file was generated by the mksyntax program.\n\
97 static void add_default(void);
98 static void finish(void);
99 static void init(const char *);
100 static void add(const char *, const char *);
101 static void output_type_macros(void);
104 main(int argc __unused, char **argv __unused)
110 /* Create output files */
111 if ((cfile = fopen("syntax.c", "w")) == NULL) {
115 if ((hfile = fopen("syntax.h", "w")) == NULL) {
119 fputs(writer, hfile);
120 fputs(writer, cfile);
122 fputs("#include <sys/cdefs.h>\n", hfile);
123 fputs("#include <limits.h>\n\n", hfile);
125 /* Generate the #define statements in the header file */
126 fputs("/* Syntax classes */\n", hfile);
127 for (i = 0 ; synclass[i].name ; i++) {
128 sprintf(buf, "#define %s %d", synclass[i].name, i);
130 for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07)
132 fprintf(hfile, "/* %s */\n", synclass[i].comment);
135 fputs("/* Syntax classes for is_ functions */\n", hfile);
136 for (i = 0 ; is_entry[i].name ; i++) {
137 sprintf(buf, "#define %s %#o", is_entry[i].name, 1 << i);
139 for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07)
141 fprintf(hfile, "/* %s */\n", is_entry[i].comment);
144 fputs("#define SYNBASE (1 - CHAR_MIN)\n", hfile);
145 fputs("#define PEOF -SYNBASE\n\n", hfile);
147 fputs("#define BASESYNTAX (basesyntax + SYNBASE)\n", hfile);
148 fputs("#define DQSYNTAX (dqsyntax + SYNBASE)\n", hfile);
149 fputs("#define SQSYNTAX (sqsyntax + SYNBASE)\n", hfile);
150 fputs("#define ARISYNTAX (arisyntax + SYNBASE)\n", hfile);
152 output_type_macros(); /* is_digit, etc. */
155 /* Generate the syntax tables. */
156 fputs("#include \"parser.h\"\n", cfile);
157 fputs("#include \"shell.h\"\n", cfile);
158 fputs("#include \"syntax.h\"\n\n", cfile);
160 fputs("/* syntax table used when not in quotes */\n", cfile);
166 add("\"", "CDQUOTE");
170 add("<>();&| \t", "CSPCL");
173 fputs("\n/* syntax table used when in double quotes */\n", cfile);
178 add("\"", "CENDQUOTE");
182 /* ':/' for tilde expansion, '-^]' for [a\-x] pattern ranges */
183 add("!*?[]=~:/-^", "CCTL");
186 fputs("\n/* syntax table used when in single quotes */\n", cfile);
191 add("'", "CENDQUOTE");
192 /* ':/' for tilde expansion, '-^]' for [a\-x] pattern ranges */
193 add("!*?[]=~:/-^", "CCTL");
196 fputs("\n/* syntax table used when in arithmetic */\n", cfile);
209 fputs("\n/* character classification table */\n", cfile);
211 add("0123456789", "ISDIGIT");
212 add("abcdefghijklmnopqrstuvwxyz", "ISLOWER");
213 add("ABCDEFGHIJKLMNOPQRSTUVWXYZ", "ISUPPER");
215 add("#?$!-*@", "ISSPECL");
223 * Output the header and declaration of a syntax table.
227 init(const char *name)
229 fprintf(hfile, "extern const char %s[];\n", name);
230 fprintf(cfile, "const char %s[SYNBASE + CHAR_MAX + 1] = {\n", name);
235 add_one(const char *key, const char *type)
237 fprintf(cfile, "\t[SYNBASE + %s] = %s,\n", key, type);
242 * Add default values to the syntax table.
248 add_one("PEOF", "CEOF");
249 add_one("CTLESC", "CCTL");
250 add_one("CTLVAR", "CCTL");
251 add_one("CTLENDVAR", "CCTL");
252 add_one("CTLBACKQ", "CCTL");
253 add_one("CTLBACKQ + CTLQUOTE", "CCTL");
254 add_one("CTLARI", "CCTL");
255 add_one("CTLENDARI", "CCTL");
256 add_one("CTLQUOTEMARK", "CCTL");
257 add_one("CTLQUOTEEND", "CCTL");
262 * Output the footer of a syntax table.
268 fputs("};\n", cfile);
273 * Add entries to the syntax table.
277 add(const char *p, const char *type)
282 case '\t': c = 't'; break;
283 case '\n': c = 'n'; break;
284 case '\'': c = '\''; break;
285 case '\\': c = '\\'; break;
288 fprintf(cfile, "\t[SYNBASE + '%c'] = %s,\n", c, type);
291 fprintf(cfile, "\t[SYNBASE + '\\%c'] = %s,\n", c, type);
297 * Output character classification macros (e.g. is_digit). If digits are
298 * contiguous, we can test for them quickly.
301 static const char *macro[] = {
302 "#define is_digit(c)\t((unsigned int)((c) - '0') <= 9)",
303 "#define is_eof(c)\t((c) == PEOF)",
304 "#define is_alpha(c)\t((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER))",
305 "#define is_name(c)\t((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER|ISUNDER))",
306 "#define is_in_name(c)\t((is_type+SYNBASE)[(int)c] & (ISUPPER|ISLOWER|ISUNDER|ISDIGIT))",
307 "#define is_special(c)\t((is_type+SYNBASE)[(int)c] & (ISSPECL|ISDIGIT))",
308 "#define digit_val(c)\t((c) - '0')",
313 output_type_macros(void)
317 for (pp = macro ; *pp ; pp++)
318 fprintf(hfile, "%s\n", *pp);