/* Definition of leading bytes */
/************************************************************************/
+typedef unsigned char Charset_ID;
+
#define MIN_LEADING_BYTE 0x80
/* These need special treatment in a string and/or character */
#define LEADING_BYTE_ASCII 0x8E /* Omitted in a buffer */
CHARSET_REVERSE_DIRECTION_CHARSET (XCHARSET (cs))
struct charset_lookup {
- /* Table of charsets indexed by leading byte. */
- Lisp_Object charset_by_leading_byte[128];
+ /* Table of charsets indexed by (leading byte - MIN_LEADING_BYTE). */
+ Lisp_Object charset_by_leading_byte[NUM_LEADING_BYTES];
/* Table of charsets indexed by type/final-byte/direction. */
Lisp_Object charset_by_attributes[4][128][2];
- Bufbyte next_allocated_1_byte_leading_byte;
- Bufbyte next_allocated_2_byte_leading_byte;
+
+ Charset_ID next_allocated_1_byte_leading_byte;
+ Charset_ID next_allocated_2_byte_leading_byte;
};
INLINE_HEADER Lisp_Object CHARSET_BY_LEADING_BYTE (Bufbyte lb);
/* When error-checking is on, x86 GCC 2.95.2 -O3 miscompiles the
following unless we introduce `tem'. */
int tem = lb;
- type_checking_assert (tem >= 0x80 && tem <= 0xFF);
+ type_checking_assert (tem >= MIN_LEADING_BYTE &&
+ tem < (MIN_LEADING_BYTE + NUM_LEADING_BYTES));
#endif
- return chlook->charset_by_leading_byte[lb - 128];
+ return chlook->charset_by_leading_byte[lb - MIN_LEADING_BYTE];
}
INLINE_HEADER Lisp_Object
/* Dealing with characters */
/************************************************************************/
-/* Is this character represented by more than one byte in a string? */
-
-#define CHAR_MULTIBYTE_P(c) ((c) >= 0x80)
-
-#define CHAR_ASCII_P(c) (!CHAR_MULTIBYTE_P (c))
+#define CHAR_ASCII_P(ch) ((ch) <= 0x7F)
/* The bit fields of character are divided into 3 parts:
FIELD1(5bits):FIELD2(7bits):FIELD3(7bits) */
#ifdef ENABLE_COMPOSITE_CHARS
return LEADING_BYTE_COMPOSITE;
#else
- abort();
+ ABORT();
return 0;
#endif /* ENABLE_COMPOSITE_CHARS */
}