[52461c5] | 1 | /* |
---|
| 2 | * Copyright (c) 1987 The Regents of the University of California. |
---|
| 3 | * All rights reserved. |
---|
| 4 | * |
---|
| 5 | * Redistribution and use in source and binary forms, with or without |
---|
| 6 | * modification, are permitted provided that the following conditions |
---|
| 7 | * are met: |
---|
| 8 | * 1. Redistributions of source code must retain the above copyright |
---|
| 9 | * notice, this list of conditions and the following disclaimer. |
---|
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
---|
| 11 | * notice, this list of conditions and the following disclaimer in the |
---|
| 12 | * documentation and/or other materials provided with the distribution. |
---|
| 13 | * 3. All advertising materials mentioning features or use of this software |
---|
| 14 | * must display the following acknowledgement: |
---|
| 15 | * This product includes software developed by the University of |
---|
| 16 | * California, Berkeley and its contributors. |
---|
| 17 | * 4. Neither the name of the University nor the names of its contributors |
---|
| 18 | * may be used to endorse or promote products derived from this software |
---|
| 19 | * without specific prior written permission. |
---|
| 20 | * |
---|
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
---|
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
---|
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
---|
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
---|
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
---|
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
---|
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
---|
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
---|
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
---|
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
---|
| 31 | * SUCH DAMAGE. |
---|
| 32 | */ |
---|
| 33 | |
---|
| 34 | #ifndef lint |
---|
| 35 | static char sccsid[] = "@(#)yacc.c 5.6 (Berkeley) 2/26/91"; |
---|
| 36 | #endif /* not lint */ |
---|
| 37 | |
---|
| 38 | #include <stdio.h> |
---|
| 39 | #include <string.h> |
---|
| 40 | #include "ctags.h" |
---|
| 41 | |
---|
| 42 | /* |
---|
| 43 | * y_entries: |
---|
| 44 | * find the yacc tags and put them in. |
---|
| 45 | */ |
---|
| 46 | y_entries() |
---|
| 47 | { |
---|
| 48 | register int c; |
---|
| 49 | register char *sp; |
---|
| 50 | register bool in_rule; |
---|
| 51 | char tok[MAXTOKEN]; |
---|
| 52 | |
---|
| 53 | while (GETC(!=,EOF)) |
---|
| 54 | switch ((char)c) { |
---|
| 55 | case '\n': |
---|
| 56 | SETLINE; |
---|
| 57 | /* FALLTHROUGH */ |
---|
| 58 | case ' ': |
---|
| 59 | case '\f': |
---|
| 60 | case '\r': |
---|
| 61 | case '\t': |
---|
| 62 | break; |
---|
| 63 | case '{': |
---|
| 64 | if (skip_key((int)'}')) |
---|
| 65 | in_rule = NO; |
---|
| 66 | break; |
---|
| 67 | case '\'': |
---|
| 68 | case '"': |
---|
| 69 | if (skip_key(c)) |
---|
| 70 | in_rule = NO; |
---|
| 71 | break; |
---|
| 72 | case '%': |
---|
| 73 | if (GETC(==,'%')) |
---|
| 74 | return; |
---|
| 75 | (void)ungetc(c,inf); |
---|
| 76 | break; |
---|
| 77 | case '/': |
---|
| 78 | if (GETC(==,'*')) |
---|
| 79 | skip_comment(); |
---|
| 80 | else |
---|
| 81 | (void)ungetc(c,inf); |
---|
| 82 | break; |
---|
| 83 | case '|': |
---|
| 84 | case ';': |
---|
| 85 | in_rule = NO; |
---|
| 86 | break; |
---|
| 87 | default: |
---|
| 88 | if (in_rule || !isalpha(c) && c != (int)'.' |
---|
| 89 | && c != (int)'_') |
---|
| 90 | break; |
---|
| 91 | sp = tok; |
---|
| 92 | *sp++ = c; |
---|
| 93 | while (GETC(!=,EOF) && (intoken(c) || c == (int)'.')) |
---|
| 94 | *sp++ = c; |
---|
| 95 | *sp = EOS; |
---|
| 96 | getline(); /* may change before ':' */ |
---|
| 97 | while (iswhite(c)) { |
---|
| 98 | if (c == (int)'\n') |
---|
| 99 | SETLINE; |
---|
| 100 | if (GETC(==,EOF)) |
---|
| 101 | return; |
---|
| 102 | } |
---|
| 103 | if (c == (int)':') { |
---|
| 104 | pfnote(tok,lineno); |
---|
| 105 | in_rule = YES; |
---|
| 106 | } |
---|
| 107 | else |
---|
| 108 | (void)ungetc(c,inf); |
---|
| 109 | } |
---|
| 110 | } |
---|
| 111 | |
---|
| 112 | /* |
---|
| 113 | * toss_yysec -- |
---|
| 114 | * throw away lines up to the next "\n%%\n" |
---|
| 115 | */ |
---|
| 116 | toss_yysec() |
---|
| 117 | { |
---|
| 118 | register int c, /* read character */ |
---|
| 119 | state; |
---|
| 120 | |
---|
| 121 | /* |
---|
| 122 | * state == 0 : waiting |
---|
| 123 | * state == 1 : received a newline |
---|
| 124 | * state == 2 : received first % |
---|
| 125 | * state == 3 : recieved second % |
---|
| 126 | */ |
---|
| 127 | lineftell = ftell(inf); |
---|
| 128 | for (state = 0;GETC(!=,EOF);) |
---|
| 129 | switch ((char)c) { |
---|
| 130 | case '\n': |
---|
| 131 | ++lineno; |
---|
| 132 | lineftell = ftell(inf); |
---|
| 133 | if (state == 3) /* done! */ |
---|
| 134 | return; |
---|
| 135 | state = 1; /* start over */ |
---|
| 136 | break; |
---|
| 137 | case '%': |
---|
| 138 | if (state) /* if 1 or 2 */ |
---|
| 139 | ++state; /* goto 3 */ |
---|
| 140 | break; |
---|
| 141 | default: |
---|
| 142 | state = 0; /* reset */ |
---|
| 143 | } |
---|
| 144 | } |
---|