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author | Cameron Katri <me@cameronkatri.com> | 2021-05-09 14:20:58 -0400 |
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committer | Cameron Katri <me@cameronkatri.com> | 2021-05-09 14:20:58 -0400 |
commit | 5fd83771641d15c418f747bd343ba6738d3875f7 (patch) | |
tree | 5abf0f78f680d9837dbd93d4d4c3933bb7509599 /developer_cmds/ctags/yacc.c | |
download | apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.gz apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.zst apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.zip |
Import macOS userland
adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106
Diffstat (limited to 'developer_cmds/ctags/yacc.c')
-rw-r--r-- | developer_cmds/ctags/yacc.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/developer_cmds/ctags/yacc.c b/developer_cmds/ctags/yacc.c new file mode 100644 index 0000000..17edfa6 --- /dev/null +++ b/developer_cmds/ctags/yacc.c @@ -0,0 +1,158 @@ +/* $NetBSD: yacc.c,v 1.4 1997/10/18 13:19:04 lukem Exp $ */ + +/* + * Copyright (c) 1987, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#ifndef lint +#if 0 +static char sccsid[] = "@(#)yacc.c 8.3 (Berkeley) 4/2/94"; +#else +__RCSID("$NetBSD: yacc.c,v 1.4 1997/10/18 13:19:04 lukem Exp $"); +#endif +#endif /* not lint */ + +#include <ctype.h> +#include <limits.h> +#include <stdio.h> +#include <string.h> + +#include "ctags.h" + +/* + * y_entries: + * find the yacc tags and put them in. + */ +void +y_entries() +{ + int c; + char *sp; + bool in_rule; + char tok[MAXTOKEN]; + + in_rule = NO; + + while (GETC(!=, EOF)) + switch (c) { + case '\n': + SETLINE; + /* FALLTHROUGH */ + case ' ': + case '\f': + case '\r': + case '\t': + break; + case '{': + if (skip_key('}')) + in_rule = NO; + break; + case '\'': + case '"': + if (skip_key(c)) + in_rule = NO; + break; + case '%': + if (GETC(==, '%')) + return; + (void)ungetc(c, inf); + break; + case '/': + if (GETC(==, '*')) + skip_comment(); + else + (void)ungetc(c, inf); + break; + case '|': + case ';': + in_rule = NO; + break; + default: + if (in_rule || (!isalpha(c) && c != '.' && c != '_')) + break; + sp = tok; + *sp++ = c; + while (GETC(!=, EOF) && (intoken(c) || c == '.')) + *sp++ = c; + *sp = EOS; + ct_getline(); /* may change before ':' */ + while (iswhite(c)) { + if (c == '\n') + SETLINE; + if (GETC(==, EOF)) + return; + } + if (c == ':') { + pfnote(tok, lineno); + in_rule = YES; + } + else + (void)ungetc(c, inf); + } +} + +/* + * toss_yysec -- + * throw away lines up to the next "\n%%\n" + */ +void +toss_yysec() +{ + int c; /* read character */ + int state; + + /* + * state == 0 : waiting + * state == 1 : received a newline + * state == 2 : received first % + * state == 3 : recieved second % + */ + lineftell = ftell(inf); + for (state = 0; GETC(!=, EOF);) + switch (c) { + case '\n': + ++lineno; + lineftell = ftell(inf); + if (state == 3) /* done! */ + return; + state = 1; /* start over */ + break; + case '%': + if (state) /* if 1 or 2 */ + ++state; /* goto 3 */ + break; + default: + state = 0; /* reset */ + break; + } +} |