Merge remote-tracking branch 'upstream/master' into aucmd_textputpostaucmd_textputpost

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 == ' ';
+}