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Diffstat (limited to 'contrib/nvi/ex/tag.h')
-rw-r--r-- | contrib/nvi/ex/tag.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/contrib/nvi/ex/tag.h b/contrib/nvi/ex/tag.h new file mode 100644 index 0000000..aee3dd2 --- /dev/null +++ b/contrib/nvi/ex/tag.h @@ -0,0 +1,107 @@ +/*- + * Copyright (c) 1992, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1992, 1993, 1994, 1995, 1996 + * Keith Bostic. All rights reserved. + * Copyright (c) 1994, 1996 + * Rob Mayoff. All rights reserved. + * + * See the LICENSE file for redistribution information. + * + * @(#)tag.h 10.5 (Berkeley) 5/15/96 + */ + +/* + * Cscope connection information. One of these is maintained per cscope + * connection, linked from the EX_PRIVATE structure. + */ +struct _csc { + LIST_ENTRY(_csc) q; /* Linked list of cscope connections. */ + + char *dname; /* Base directory of this cscope connection. */ + size_t dlen; /* Length of base directory. */ + pid_t pid; /* PID of the connected cscope process. */ + time_t mtime; /* Last modification time of cscope database. */ + + FILE *from_fp; /* from cscope: FILE. */ + int from_fd; /* from cscope: file descriptor. */ + FILE *to_fp; /* to cscope: FILE. */ + int to_fd; /* to cscope: file descriptor. */ + + char **paths; /* Array of search paths for this cscope. */ + char *pbuf; /* Search path buffer. */ + size_t pblen; /* Search path buffer length. */ + + char buf[1]; /* Variable length buffer. */ +}; + +/* + * Tag file information. One of these is maintained per tag file, linked + * from the EXPRIVATE structure. + */ +struct _tagf { /* Tag files. */ + TAILQ_ENTRY(_tagf) q; /* Linked list of tag files. */ + char *name; /* Tag file name. */ + int errnum; /* Errno. */ + +#define TAGF_ERR 0x01 /* Error occurred. */ +#define TAGF_ERR_WARN 0x02 /* Error reported. */ + u_int8_t flags; +}; + +/* + * Tags are structured internally as follows: + * + * +----+ +----+ +----+ +----+ + * | EP | -> | Q1 | <-- | T1 | <-- | T2 | + * +----+ +----+ --> +----+ --> +----+ + * | + * +----+ +----+ + * | Q2 | <-- | T1 | + * +----+ --> +----+ + * | + * +----+ +----+ + * | Q3 | <-- | T1 | + * +----+ --> +----+ + * + * Each Q is a TAGQ, or tag "query", which is the result of one tag or cscope + * command. Each Q references one or more TAG's, or tagged file locations. + * + * tag: put a new Q at the head (^]) + * tagnext: T1 -> T2 inside Q (^N) + * tagprev: T2 -> T1 inside Q (^P) + * tagpop: discard Q (^T) + * tagtop: discard all Q + */ +struct _tag { /* Tag list. */ + CIRCLEQ_ENTRY(_tag) q; /* Linked list of tags. */ + + /* Tag pop/return information. */ + FREF *frp; /* Saved file. */ + recno_t lno; /* Saved line number. */ + size_t cno; /* Saved column number. */ + + char *fname; /* Filename. */ + size_t fnlen; /* Filename length. */ + recno_t slno; /* Search line number. */ + char *search; /* Search string. */ + size_t slen; /* Search string length. */ + + char buf[1]; /* Variable length buffer. */ +}; + +struct _tagq { /* Tag queue. */ + CIRCLEQ_ENTRY(_tagq) q; /* Linked list of tag queues. */ + /* This queue's tag list. */ + CIRCLEQ_HEAD(_tagqh, _tag) tagq; + + TAG *current; /* Current TAG within the queue. */ + + char *tag; /* Tag string. */ + size_t tlen; /* Tag string length. */ + +#define TAG_CSCOPE 0x01 /* Cscope tag. */ + u_int8_t flags; + + char buf[1]; /* Variable length buffer. */ +}; |