94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
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/*
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** charmap.h : P0 specific, also included by charmap.c
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** it defines the mapping used to go from simple chars to these predefined
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** values. this enables the compiler to use a compact switch stmt.
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** they have been grouped in what is believed to be the most beneficial
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** way, in that most switches will be checking those values which have
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** been grouped together.
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*/
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#define EOS_CHAR '\0' /* end of string/buffer marker char */
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#define LX_WHITE 0
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#define LX_CR 1
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#define LX_SLASH 2 /* /, /=, comment start */
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#define LX_EOS 3
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#define LX_STAR 4 /* *, *=, comment stop */
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#define LX_NL 5
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#define LX_BACKSLASH 6
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#define LX_SQUOTE 7
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#define LX_DQUOTE 8
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#define LX_DOT 9 /* . ... */
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#define LX_BANG 10 /* ! != */
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#define LX_POUND 11 /* # ## */
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#define LX_PERCENT 12 /* % %= */
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#define LX_EQ 13 /* = == */
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#define LX_HAT 14 /* ^ ^= */
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#define LX_OR 15 /* | |= || */
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#define LX_AND 16 /* & && &= */
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#define LX_PLUS 17 /* + ++ += */
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#define LX_MINUS 18 /* - -- -= -> */
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#define LX_LT 19 /* < << <<= <= */
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#define LX_GT 20 /* > >= >> >>= */
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#define LX_LSHIFT 21 /* << */
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#define LX_RSHIFT 22 /* >> */
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#define LX_ILL 23
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#define LX_CBRACE 24
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#define LX_CBRACK 25
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#define LX_COLON 26
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#define LX_COMMA 27
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#define LX_CPAREN 28
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#define LX_NUMBER 29
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#define LX_OBRACE 30
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#define LX_OBRACK 31
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#define LX_OPAREN 32
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#define LX_QUEST 33
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#define LX_SEMI 34
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#define LX_TILDE 35
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#define LX_MACFORMAL 36
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#define LX_STRFORMAL 37
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#define LX_CHARFORMAL 38
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#define LX_NOEXPAND 39
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#define LX_ID 40
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#define LX_EACH 41
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#define LX_LEADBYTE 42
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#define LX_ASCII 43 /* to use for 'non-illegal' illegals */
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#define LX_FORMALMARK 0x1
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#define LX_FORMALSTR 0x2
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#define LX_FORMALCHAR 0x3
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#define LX_NOEXPANDMARK 0x4
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#define CONTROL_Z 0x1a
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/*
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** Charmap is indexed with a character value plus the above offset
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*/
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#define CHARMAP(c) (Charmap[((UCHAR)(c))])
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#define LX_IS_IDENT(c) (CHARMAP(c) == LX_ID)
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#define LX_IS_WHITE(c) (CHARMAP(c) == LX_WHITE)
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#define LX_IS_NUMBER(c) (CHARMAP(c) == LX_NUMBER)
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#define LXC_BDIGIT 0x01 /* 0 - 1 */
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#define LXC_ODIGIT 0x02 /* 0 - 7 */
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#define LXC_DIGIT 0x04 /* 0 - 9 */
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#define LXC_XDIGIT 0x08 /* a-f A-F 0-9 */
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#define LXC_ID 0x10 /* continuation is part of an identifier */
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#define LXC_RADIX 0x20 /* BbDdHhOoQq */
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#define LXC_WHITE 0x40 /* whitespace */
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#define LXC_SPECIAL 0x80 /* the char may have a special meaning */
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#define CONTMAP(c) (Contmap[((UCHAR)(c))])
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/*
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** LXC_IS_ID(c) : is c part of an identifier
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*/
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#define LXC_IS_BDIGIT(c) (CONTMAP(c) & LXC_BDIGIT)
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#define LXC_IS_ODIGIT(c) (CONTMAP(c) & LXC_ODIGIT)
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#define LXC_IS_DIGIT(c) (CONTMAP(c) & LXC_DIGIT)
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#define LXC_IS_XDIGIT(c) (CONTMAP(c) & LXC_XDIGIT)
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#define LXC_IS_IDENT(c) (CONTMAP(c) & LXC_ID)
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#define LXC_IS_RADIX(c) (CONTMAP(c) & LXC_RADIX)
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#define LXC_IS_WHITE(c) (CONTMAP(c) & LXC_WHITE)
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#define IS_SPECIAL(c) (CONTMAP(c) & LXC_SPECIAL)
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