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Diffstat (limited to 'src/nvim/ascii_defs.h')
| -rw-r--r-- | src/nvim/ascii_defs.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/nvim/ascii_defs.h b/src/nvim/ascii_defs.h new file mode 100644 index 0000000000..4125336796 --- /dev/null +++ b/src/nvim/ascii_defs.h @@ -0,0 +1,185 @@ +#pragma once + +#include <stdbool.h> + +#include "nvim/func_attr.h" +#include "nvim/macros_defs.h" +#include "nvim/os/os_defs.h" + +// Definitions of various common control characters. + +#define CHAR_ORD(x) ((uint8_t)(x) < 'a' \ + ? (uint8_t)(x) - 'A' \ + : (uint8_t)(x) - 'a') +#define CHAR_ORD_LOW(x) ((uint8_t)(x) - 'a') +#define CHAR_ORD_UP(x) ((uint8_t)(x) - 'A') +#define ROT13(c, a) (((((c) - (a)) + 13) % 26) + (a)) + +#define NUL '\000' +#define BELL '\007' +#define BS '\010' +#define TAB '\011' +#define NL '\012' +#define NL_STR "\012" +#define FF '\014' +#define CAR '\015' // CR is used by Mac OS X +#define ESC '\033' +#define ESC_STR "\033" +#define DEL 0x7f +#define DEL_STR "\177" +#define CSI 0x9b // Control Sequence Introducer +#define CSI_STR "\233" +#define DCS 0x90 // Device Control String +#define STERM 0x9c // String Terminator + +#define POUND 0xA3 + +#define CTRL_CHR(x) (TOUPPER_ASC(x) ^ 0x40) // '?' -> DEL, '@' -> ^@, etc. +#define META(x) ((x) | 0x80) + +#define CTRL_F_STR "\006" +#define CTRL_H_STR "\010" +#define CTRL_V_STR "\026" + +#define Ctrl_AT 0 // @ +#define Ctrl_A 1 +#define Ctrl_B 2 +#define Ctrl_C 3 +#define Ctrl_D 4 +#define Ctrl_E 5 +#define Ctrl_F 6 +#define Ctrl_G 7 +#define Ctrl_H 8 +#define Ctrl_I 9 +#define Ctrl_J 10 +#define Ctrl_K 11 +#define Ctrl_L 12 +#define Ctrl_M 13 +#define Ctrl_N 14 +#define Ctrl_O 15 +#define Ctrl_P 16 +#define Ctrl_Q 17 +#define Ctrl_R 18 +#define Ctrl_S 19 +#define Ctrl_T 20 +#define Ctrl_U 21 +#define Ctrl_V 22 +#define Ctrl_W 23 +#define Ctrl_X 24 +#define Ctrl_Y 25 +#define Ctrl_Z 26 +// CTRL- [ Left Square Bracket == ESC +#define Ctrl_BSL 28 // \ BackSLash +#define Ctrl_RSB 29 // ] Right Square Bracket +#define Ctrl_HAT 30 // ^ +#define Ctrl__ 31 + +// Character that separates dir names in a path. +#ifdef BACKSLASH_IN_FILENAME +# define PATHSEP psepc +# define PATHSEPSTR pseps +#else +# define PATHSEP '/' +# define PATHSEPSTR "/" +#endif + +static inline bool ascii_iswhite(int c) + REAL_FATTR_CONST + REAL_FATTR_ALWAYS_INLINE; + +static inline bool ascii_iswhite_or_nul(int c) + REAL_FATTR_CONST + REAL_FATTR_ALWAYS_INLINE; + +static inline bool ascii_isdigit(int c) + REAL_FATTR_CONST + REAL_FATTR_ALWAYS_INLINE; + +static inline bool ascii_isxdigit(int c) + REAL_FATTR_CONST + REAL_FATTR_ALWAYS_INLINE; + +static inline bool ascii_isident(int c) + REAL_FATTR_CONST + REAL_FATTR_ALWAYS_INLINE; + +static inline bool ascii_isbdigit(int c) + REAL_FATTR_CONST + REAL_FATTR_ALWAYS_INLINE; + +static inline bool ascii_isspace(int c) + REAL_FATTR_CONST + REAL_FATTR_ALWAYS_INLINE; + +/// Checks if `c` is a space or tab character. +/// +/// @see {ascii_isdigit} +static inline bool ascii_iswhite(int c) +{ + return c == ' ' || c == '\t'; +} + +/// Checks if `c` is a space or tab character or NUL. +/// +/// @see {ascii_isdigit} +static inline bool ascii_iswhite_or_nul(int c) +{ + return ascii_iswhite(c) || c == NUL; +} + +/// Check whether character is a decimal digit. +/// +/// Library isdigit() function is officially locale-dependent and, for +/// example, returns true for superscript 1 (¹) in locales where encoding +/// contains it in lower 8 bits. Also avoids crashes in case c is below +/// 0 or above 255: library functions are officially defined as accepting +/// only EOF and unsigned char values (otherwise it is undefined behaviour) +/// what may be used for some optimizations (e.g. simple `return +/// isdigit_table[c];`). +static inline bool ascii_isdigit(int c) +{ + return c >= '0' && c <= '9'; +} + +/// Checks if `c` is a hexadecimal digit, that is, one of 0-9, a-f, A-F. +/// +/// @see {ascii_isdigit} +static inline bool ascii_isxdigit(int c) +{ + return (c >= '0' && c <= '9') + || (c >= 'a' && c <= 'f') + || (c >= 'A' && c <= 'F'); +} + +/// Checks if `c` is an “identifier” character +/// +/// That is, whether it is alphanumeric character or underscore. +static inline bool ascii_isident(int c) +{ + return ASCII_ISALNUM(c) || c == '_'; +} + +/// Checks if `c` is a binary digit, that is, 0-1. +/// +/// @see {ascii_isdigit} +static inline bool ascii_isbdigit(int c) +{ + return (c == '0' || c == '1'); +} + +/// Checks if `c` is an octal digit, that is, 0-7. +/// +/// @see {ascii_isdigit} +static inline bool ascii_isodigit(int c) +{ + return (c >= '0' && c <= '7'); +} + +/// Checks if `c` is a white-space character, that is, +/// one of \f, \n, \r, \t, \v. +/// +/// @see {ascii_isdigit} +static inline bool ascii_isspace(int c) +{ + return (c >= 9 && c <= 13) || c == ' '; +} |