mirror of https://github.com/vim/vim.git
363 lines
11 KiB
C
363 lines
11 KiB
C
/* vi:set ts=8 sts=4 sw=4 noet:
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*
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* VIM - Vi IMproved by Bram Moolenaar
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*
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* Do ":help uganda" in Vim to read copying and usage conditions.
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* Do ":help credits" in Vim to see a list of people who contributed.
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*/
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/*
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* macros.h: macro definitions for often used code
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*
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* Macros should be ALL_CAPS. An exception is for where a function is
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* replaced and an argument is not used more than once.
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*/
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/*
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* PBYTE(lp, c) - put byte 'c' at position 'lp'
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*/
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#define PBYTE(lp, c) (*(ml_get_buf(curbuf, (lp).lnum, TRUE) + (lp).col) = (c))
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/*
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* Position comparisons
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*/
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#define LT_POS(a, b) (((a).lnum != (b).lnum) \
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? (a).lnum < (b).lnum \
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: (a).col != (b).col \
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? (a).col < (b).col \
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: (a).coladd < (b).coladd)
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#define LT_POSP(a, b) (((a)->lnum != (b)->lnum) \
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? (a)->lnum < (b)->lnum \
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: (a)->col != (b)->col \
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? (a)->col < (b)->col \
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: (a)->coladd < (b)->coladd)
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#define EQUAL_POS(a, b) (((a).lnum == (b).lnum) && ((a).col == (b).col) && ((a).coladd == (b).coladd))
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#define CLEAR_POS(a) do {(a)->lnum = 0; (a)->col = 0; (a)->coladd = 0;} while (0)
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#define LTOREQ_POS(a, b) (LT_POS(a, b) || EQUAL_POS(a, b))
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/*
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* VIM_ISWHITE() is used for "^" and the like. It differs from isspace()
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* because it doesn't include <CR> and <LF> and the like.
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*/
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#define VIM_ISWHITE(x) ((x) == ' ' || (x) == '\t')
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/*
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* LINEEMPTY() - return TRUE if the line is empty
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*/
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#define LINEEMPTY(p) (*ml_get(p) == NUL)
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/*
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* BUFEMPTY() - return TRUE if the current buffer is empty
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*/
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#define BUFEMPTY() (curbuf->b_ml.ml_line_count == 1 && *ml_get((linenr_T)1) == NUL)
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/*
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* toupper() and tolower() that use the current locale.
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* On some systems toupper()/tolower() only work on lower/uppercase
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* characters, first use islower() or isupper() then.
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* Careful: Only call TOUPPER_LOC() and TOLOWER_LOC() with a character in the
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* range 0 - 255. toupper()/tolower() on some systems can't handle others.
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* Note: It is often better to use MB_TOLOWER() and MB_TOUPPER(), because many
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* toupper() and tolower() implementations only work for ASCII.
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*/
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#ifdef MSWIN
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# define TOUPPER_LOC(c) toupper_tab[(c) & 255]
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# define TOLOWER_LOC(c) tolower_tab[(c) & 255]
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#else
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# ifdef BROKEN_TOUPPER
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# define TOUPPER_LOC(c) (islower(c) ? toupper(c) : (c))
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# define TOLOWER_LOC(c) (isupper(c) ? tolower(c) : (c))
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# else
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# define TOUPPER_LOC toupper
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# define TOLOWER_LOC tolower
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# endif
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#endif
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// toupper() and tolower() for ASCII only and ignore the current locale.
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#ifdef EBCDIC
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# define TOUPPER_ASC(c) (islower(c) ? toupper(c) : (c))
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# define TOLOWER_ASC(c) (isupper(c) ? tolower(c) : (c))
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#else
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# define TOUPPER_ASC(c) (((c) < 'a' || (c) > 'z') ? (c) : (c) - ('a' - 'A'))
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# define TOLOWER_ASC(c) (((c) < 'A' || (c) > 'Z') ? (c) : (c) + ('a' - 'A'))
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#endif
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/*
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* MB_ISLOWER() and MB_ISUPPER() are to be used on multi-byte characters. But
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* don't use them for negative values!
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*/
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#define MB_ISLOWER(c) vim_islower(c)
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#define MB_ISUPPER(c) vim_isupper(c)
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#define MB_TOLOWER(c) vim_tolower(c)
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#define MB_TOUPPER(c) vim_toupper(c)
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// Use our own isdigit() replacement, because on MS-Windows isdigit() returns
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// non-zero for superscript 1. Also avoids that isdigit() crashes for numbers
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// below 0 and above 255.
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#define VIM_ISDIGIT(c) ((unsigned)(c) - '0' < 10)
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// Like isalpha() but reject non-ASCII characters. Can't be used with a
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// special key (negative value).
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#ifdef EBCDIC
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# define ASCII_ISALPHA(c) isalpha(c)
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# define ASCII_ISALNUM(c) isalnum(c)
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# define ASCII_ISLOWER(c) islower(c)
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# define ASCII_ISUPPER(c) isupper(c)
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#else
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# define ASCII_ISLOWER(c) ((unsigned)(c) - 'a' < 26)
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# define ASCII_ISUPPER(c) ((unsigned)(c) - 'A' < 26)
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# define ASCII_ISALPHA(c) (ASCII_ISUPPER(c) || ASCII_ISLOWER(c))
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# define ASCII_ISALNUM(c) (ASCII_ISALPHA(c) || VIM_ISDIGIT(c))
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#endif
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// Returns empty string if it is NULL.
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#define EMPTY_IF_NULL(x) ((x) ? (x) : (char_u *)"")
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#ifdef FEAT_LANGMAP
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/*
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* Adjust chars in a language according to 'langmap' option.
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* NOTE that there is no noticeable overhead if 'langmap' is not set.
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* When set the overhead for characters < 256 is small.
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* Don't apply 'langmap' if the character comes from the Stuff buffer or from
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* a mapping and the langnoremap option was set.
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* The do-while is just to ignore a ';' after the macro.
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*/
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# define LANGMAP_ADJUST(c, condition) \
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do { \
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if (*p_langmap \
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&& (condition) \
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&& (p_lrm || (!p_lrm && KeyTyped)) \
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&& !KeyStuffed \
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&& (c) >= 0) \
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{ \
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if ((c) < 256) \
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c = langmap_mapchar[c]; \
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else \
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c = langmap_adjust_mb(c); \
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} \
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} while (0)
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#else
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# define LANGMAP_ADJUST(c, condition) // nop
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#endif
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/*
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* VIM_ISBREAK() is used very often if 'linebreak' is set, use a macro to make
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* it work fast. Only works for single byte characters!
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*/
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#define VIM_ISBREAK(c) ((c) < 256 && breakat_flags[(char_u)(c)])
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/*
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* On VMS file names are different and require a translation.
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* On the Mac open() has only two arguments.
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*/
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#ifdef VMS
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# define mch_access(n, p) access(vms_fixfilename(n), (p))
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// see mch_open() comment
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# define mch_fopen(n, p) fopen(vms_fixfilename(n), (p))
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# define mch_fstat(n, p) fstat(vms_fixfilename(n), (p))
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// VMS does not have lstat()
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# define mch_stat(n, p) stat(vms_fixfilename(n), (p))
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# define mch_rmdir(n) rmdir(vms_fixfilename(n))
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#else
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# ifndef MSWIN
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# define mch_access(n, p) access((n), (p))
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# endif
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# define mch_fstat(n, p) fstat((n), (p))
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# ifdef MSWIN // has its own mch_stat() function
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# define mch_stat(n, p) vim_stat((n), (p))
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# else
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# ifdef STAT_IGNORES_SLASH
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# define mch_stat(n, p) vim_stat((n), (p))
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# else
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# define mch_stat(n, p) stat((n), (p))
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# endif
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# endif
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#endif
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#ifdef HAVE_LSTAT
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# define mch_lstat(n, p) lstat((n), (p))
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#else
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# define mch_lstat(n, p) mch_stat((n), (p))
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#endif
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#ifdef VMS
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/*
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* It is possible to force some record format with:
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* # define mch_open(n, m, p) open(vms_fixfilename(n), (m), (p)), "rat=cr", "rfm=stmlf", "mrs=0")
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* but it is not recommended, because it can destroy indexes etc.
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*/
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# define mch_open(n, m, p) open(vms_fixfilename(n), (m), (p))
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#endif
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// mch_open_rw(): invoke mch_open() with third argument for user R/W.
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#if defined(UNIX) || defined(VMS) // open in rw------- mode
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# define mch_open_rw(n, f) mch_open((n), (f), (mode_t)0600)
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#else
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# if defined(MSWIN) // open read/write
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# define mch_open_rw(n, f) mch_open((n), (f), S_IREAD | S_IWRITE)
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# else
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# define mch_open_rw(n, f) mch_open((n), (f), 0)
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# endif
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#endif
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#ifdef STARTUPTIME
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# define TIME_MSG(s) do { if (time_fd != NULL) time_msg(s, NULL); } while (0)
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#else
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# define TIME_MSG(s) do { /**/ } while (0)
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#endif
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#define REPLACE_NORMAL(s) (((s) & REPLACE_FLAG) && !((s) & VREPLACE_FLAG))
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#ifdef FEAT_ARABIC
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# define ARABIC_CHAR(ch) (((ch) & 0xFF00) == 0x0600)
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# define UTF_COMPOSINGLIKE(p1, p2) utf_composinglike((p1), (p2))
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#else
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# define UTF_COMPOSINGLIKE(p1, p2) utf_iscomposing(utf_ptr2char(p2))
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#endif
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#ifdef FEAT_RIGHTLEFT
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// Whether to draw the vertical bar on the right side of the cell.
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# define CURSOR_BAR_RIGHT (curwin->w_p_rl && (!(State & CMDLINE) || cmdmsg_rl))
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#endif
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/*
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* MB_PTR_ADV(): advance a pointer to the next character, taking care of
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* multi-byte characters if needed.
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* MB_PTR_BACK(): backup a pointer to the previous character, taking care of
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* multi-byte characters if needed.
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* MB_COPY_CHAR(f, t): copy one char from "f" to "t" and advance the pointers.
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* PTR2CHAR(): get character from pointer.
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*/
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// Advance multi-byte pointer, skip over composing chars.
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#define MB_PTR_ADV(p) p += (*mb_ptr2len)(p)
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// Advance multi-byte pointer, do not skip over composing chars.
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#define MB_CPTR_ADV(p) p += enc_utf8 ? utf_ptr2len(p) : (*mb_ptr2len)(p)
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// Backup multi-byte pointer. Only use with "p" > "s" !
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#define MB_PTR_BACK(s, p) p -= has_mbyte ? ((*mb_head_off)(s, p - 1) + 1) : 1
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// get length of multi-byte char, not including composing chars
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#define MB_CPTR2LEN(p) (enc_utf8 ? utf_ptr2len(p) : (*mb_ptr2len)(p))
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#define MB_COPY_CHAR(f, t) do { if (has_mbyte) mb_copy_char(&f, &t); else *t++ = *f++; } while (0)
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#define MB_CHARLEN(p) (has_mbyte ? mb_charlen(p) : (int)STRLEN(p))
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#define MB_CHAR2LEN(c) (has_mbyte ? mb_char2len(c) : 1)
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#define PTR2CHAR(p) (has_mbyte ? mb_ptr2char(p) : (int)*(p))
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#ifdef FEAT_AUTOCHDIR
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# define DO_AUTOCHDIR do { if (p_acd) do_autochdir(); } while (0)
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#else
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# define DO_AUTOCHDIR do { /**/ } while (0)
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#endif
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#define RESET_BINDING(wp) do { (wp)->w_p_scb = FALSE; (wp)->w_p_crb = FALSE; \
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} while (0)
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#ifdef FEAT_DIFF
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# define PLINES_NOFILL(x) plines_nofill(x)
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#else
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# define PLINES_NOFILL(x) plines(x)
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#endif
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#if defined(FEAT_JOB_CHANNEL) || defined(FEAT_CLIENTSERVER)
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# define MESSAGE_QUEUE
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#endif
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#if defined(FEAT_EVAL) && defined(FEAT_FLOAT)
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# include <float.h>
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# if defined(HAVE_MATH_H)
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// for isnan() and isinf()
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# include <math.h>
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# endif
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# ifdef USING_FLOAT_STUFF
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# ifdef MSWIN
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# ifndef isnan
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# define isnan(x) _isnan(x)
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static __inline int isinf(double x) { return !_finite(x) && !_isnan(x); }
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# endif
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# else
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# ifndef HAVE_ISNAN
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static inline int isnan(double x) { return x != x; }
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# endif
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# ifndef HAVE_ISINF
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static inline int isinf(double x) { return !isnan(x) && isnan(x - x); }
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# endif
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# endif
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# if !defined(INFINITY)
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# if defined(DBL_MAX)
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# ifdef VMS
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# define INFINITY DBL_MAX
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# else
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# define INFINITY (DBL_MAX+DBL_MAX)
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# endif
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# else
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# define INFINITY (1.0 / 0.0)
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# endif
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# endif
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# if !defined(NAN)
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# define NAN (INFINITY-INFINITY)
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# endif
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# if !defined(DBL_EPSILON)
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# define DBL_EPSILON 2.2204460492503131e-16
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# endif
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# endif
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#endif
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#ifdef FEAT_EVAL
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# define FUNCARG(fp, j) ((char_u **)(fp->uf_args.ga_data))[j]
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#endif
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/*
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* In a hashtab item "hi_key" points to "di_key" in a dictitem.
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* This avoids adding a pointer to the hashtab item.
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* DI2HIKEY() converts a dictitem pointer to a hashitem key pointer.
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* HIKEY2DI() converts a hashitem key pointer to a dictitem pointer.
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* HI2DI() converts a hashitem pointer to a dictitem pointer.
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*/
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#define DI2HIKEY(di) ((di)->di_key)
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#define HIKEY2DI(p) ((dictitem_T *)(p - offsetof(dictitem_T, di_key)))
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#define HI2DI(hi) HIKEY2DI((hi)->hi_key)
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/*
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* Flush control functions.
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*/
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#ifdef FEAT_GUI
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# define mch_enable_flush() gui_enable_flush()
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# define mch_disable_flush() gui_disable_flush()
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#else
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# define mch_enable_flush()
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# define mch_disable_flush()
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#endif
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/*
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* Like vim_free(), and also set the pointer to NULL.
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*/
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#define VIM_CLEAR(p) \
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do { \
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if ((p) != NULL) { \
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vim_free(p); \
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(p) = NULL; \
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} \
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} while (0)
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// Whether a command index indicates a user command.
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#define IS_USER_CMDIDX(idx) ((int)(idx) < 0)
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// Give an error in curwin is a popup window and evaluate to TRUE.
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#ifdef FEAT_PROP_POPUP
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# define ERROR_IF_POPUP_WINDOW error_if_popup_window()
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#else
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# define ERROR_IF_POPUP_WINDOW 0
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#endif
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#ifdef ABORT_ON_INTERNAL_ERROR
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# define ESTACK_CHECK_DECLARATION int estack_len_before;
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# define ESTACK_CHECK_SETUP estack_len_before = exestack.ga_len;
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# define ESTACK_CHECK_NOW if (estack_len_before != exestack.ga_len) \
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siemsg("Exestack length expected: %d, actual: %d", estack_len_before, exestack.ga_len);
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#else
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# define ESTACK_CHECK_DECLARATION
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# define ESTACK_CHECK_SETUP
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# define ESTACK_CHECK_NOW
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#endif
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