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https://github.com/neovim/neovim.git
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b5653984e5
The optimized virtual column calculation loop in getvcol() was decoding the current character twice: once in ptr2cells() and the second time in utfc_ptr2len(). For combining charcters, they were decoded up to 2 times in utfc_ptr2len(). Additionally, the function used to decode the character could be further optimised.
177 lines
5.5 KiB
C
177 lines
5.5 KiB
C
#pragma once
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#include "auto/config.h"
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// EXTERN is only defined in main.c. That's where global variables are
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// actually defined and initialized.
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#ifndef EXTERN
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# define EXTERN extern
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# define INIT(...)
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#else
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# ifndef INIT
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# define INIT(...) __VA_ARGS__
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# endif
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#endif
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#ifndef MIN
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# define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
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#endif
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#ifndef MAX
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# define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
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#endif
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/// String with length
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///
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/// For use in functions which accept (char *s, size_t len) pair in arguments.
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///
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/// @param[in] s Static string.
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///
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/// @return `s, sizeof(s) - 1`
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#define S_LEN(s) (s), (sizeof(s) - 1)
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// toupper() and tolower() that use the current locale.
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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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#define TOUPPER_LOC toupper
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#define TOLOWER_LOC tolower
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// toupper() and tolower() for ASCII only and ignore the current locale.
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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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// 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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#define ASCII_ISLOWER(c) ((unsigned)(c) >= 'a' && (unsigned)(c) <= 'z')
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#define ASCII_ISUPPER(c) ((unsigned)(c) >= 'A' && (unsigned)(c) <= 'Z')
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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) || ascii_isdigit(c))
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// Returns empty string if it is NULL.
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#define EMPTY_IF_NULL(x) ((x) ? (x) : "")
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#define WRITEBIN "wb" // no CR-LF translation
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#define READBIN "rb"
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#define APPENDBIN "ab"
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#define REPLACE_NORMAL(s) (((s)& REPLACE_FLAG) && !((s)& VREPLACE_FLAG))
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#define RESET_BINDING(wp) \
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do { \
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(wp)->w_p_scb = false; \
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(wp)->w_p_crb = false; \
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} while (0)
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/// Calculate the length of a C array
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///
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/// This should be called with a real array. Calling this with a pointer is an
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/// error. A mechanism to detect many (though not all) of those errors at
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/// compile time is implemented. It works by the second division producing
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/// a division by zero in those cases (-Wdiv-by-zero in GCC).
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#define ARRAY_SIZE(arr) \
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((sizeof(arr)/sizeof((arr)[0])) \
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/ ((size_t)(!(sizeof(arr) % sizeof((arr)[0])))))
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/// Get last array entry
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///
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/// This should be called with a real array. Calling this with a pointer is an
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/// error.
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#define ARRAY_LAST_ENTRY(arr) (arr)[ARRAY_SIZE(arr) - 1]
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// Duplicated in os/win_defs.h to avoid include-order sensitivity.
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#define RGB_(r, g, b) (((r) << 16) | ((g) << 8) | (b))
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#define STR_(x) #x
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#define STR(x) STR_(x)
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#ifndef __has_include
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# define NVIM_HAS_INCLUDE(x) 0
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#else
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# define NVIM_HAS_INCLUDE __has_include
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#endif
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#ifndef __has_attribute
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# define NVIM_HAS_ATTRIBUTE(x) 0
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#elif defined(__clang__) && __clang__ == 1 \
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&& (__clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ <= 5))
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// Starting in Clang 3.6, __has_attribute was fixed to only report true for
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// GNU-style attributes. Prior to that, it reported true if _any_ backend
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// supported the attribute.
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# define NVIM_HAS_ATTRIBUTE(x) 0
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#else
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# define NVIM_HAS_ATTRIBUTE __has_attribute
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#endif
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#if NVIM_HAS_ATTRIBUTE(fallthrough) \
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&& (!defined(__apple_build_version__) || __apple_build_version__ >= 7000000)
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# define FALLTHROUGH {} __attribute__((fallthrough))
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#else
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# define FALLTHROUGH
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#endif
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#if defined(__clang__) || defined(__GNUC__)
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# define EXPECT(cond, value) __builtin_expect((cond), (value))
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# define UNREACHABLE __builtin_unreachable()
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#elif defined(_MSC_VER)
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# define EXPECT(cond, value) (cond)
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# define UNREACHABLE __assume(false)
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#else
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# define EXPECT(cond, value) (cond)
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# define UNREACHABLE
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#endif
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// Type of uv_buf_t.len is platform-dependent.
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// Related: https://github.com/libuv/libuv/pull/1236
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#if defined(MSWIN)
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# define UV_BUF_LEN(x) (ULONG)(x)
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#else
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# define UV_BUF_LEN(x) (x)
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#endif
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// Type of read()/write() `count` param is platform-dependent.
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#if defined(MSWIN)
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# define IO_COUNT(x) (unsigned)(x)
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#else
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# define IO_COUNT(x) (x)
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#endif
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///
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/// PRAGMA_DIAG_PUSH_IGNORE_MISSING_PROTOTYPES
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///
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#if defined(__clang__) && __clang__ == 1
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# define PRAGMA_DIAG_PUSH_IGNORE_MISSING_PROTOTYPES \
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_Pragma("clang diagnostic push") \
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_Pragma("clang diagnostic ignored \"-Wmissing-prototypes\"")
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# ifdef HAVE_WIMPLICIT_FALLTHROUGH_FLAG
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# define PRAGMA_DIAG_PUSH_IGNORE_IMPLICIT_FALLTHROUGH \
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_Pragma("clang diagnostic push") \
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_Pragma("clang diagnostic ignored \"-Wimplicit-fallthrough\"")
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# else
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# define PRAGMA_DIAG_PUSH_IGNORE_IMPLICIT_FALLTHROUGH \
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_Pragma("clang diagnostic push")
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# endif
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# define PRAGMA_DIAG_POP \
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_Pragma("clang diagnostic pop")
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#elif defined(__GNUC__)
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# define PRAGMA_DIAG_PUSH_IGNORE_MISSING_PROTOTYPES \
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_Pragma("GCC diagnostic push") \
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_Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"")
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# ifdef HAVE_WIMPLICIT_FALLTHROUGH_FLAG
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# define PRAGMA_DIAG_PUSH_IGNORE_IMPLICIT_FALLTHROUGH \
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_Pragma("GCC diagnostic push") \
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_Pragma("GCC diagnostic ignored \"-Wimplicit-fallthrough\"")
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# else
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# define PRAGMA_DIAG_PUSH_IGNORE_IMPLICIT_FALLTHROUGH \
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_Pragma("GCC diagnostic push")
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# endif
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# define PRAGMA_DIAG_POP \
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_Pragma("GCC diagnostic pop")
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#else
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# define PRAGMA_DIAG_PUSH_IGNORE_MISSING_PROTOTYPES
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# define PRAGMA_DIAG_PUSH_IGNORE_IMPLICIT_FALLTHROUGH
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# define PRAGMA_DIAG_POP
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#endif
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#define EMPTY_POS(a) ((a).lnum == 0 && (a).col == 0 && (a).coladd == 0)
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