Annex A

(informative)

Grammar summary [gram]

A.3 Lexical conventions [gram.lex]

n-char:
any member of the translation character set except the U+007d right curly bracket or new-line character
h-char:
any member of the translation character set except new-line and U+003e greater-than sign
q-char:
any member of the translation character set except new-line and U+0022 quotation mark
preprocessing-operator: one of
#        ##       %:       %:%:
operator-or-punctuator: one of
{        }        [        ]        (        )        [:       :]
<%       %>       <:       :>       ;        :        ...
?        ::       .        .*       ->       ->*      ^^       ~
!        +        -        *        /        %        ^        &        |
=        +=       -=       *=       /=       %=       ^=       &=       |=
==       !=       <        >        <=       >=       <=>      &&       ||
<<       >>       <<=      >>=      ++       --       ,
and      or       xor      not      bitand   bitor    compl
and_eq   or_eq    xor_eq   not_eq
identifier-start:
nondigit
an element of the translation character set with the Unicode property XID_Start or the Unicode property ID_Compat_Math_Start
identifier-continue:
digit
nondigit
an element of the translation character set with the Unicode property XID_Continue or the Unicode property ID_Compat_Math_Continue
nondigit: one of
a b c d e f g h i j k l m
n o p q r s t u v w x y z
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z _
digit: one of
0 1 2 3 4 5 6 7 8 9
binary-digit: one of
0 1
octal-digit: one of
0 1 2 3 4 5 6 7
nonzero-digit: one of
1 2 3 4 5 6 7 8 9
hexadecimal-prefix: one of
0x 0X
hexadecimal-digit: one of
0 1 2 3 4 5 6 7 8 9
a b c d e f
A B C D E F
unsigned-suffix: one of
u U
long-suffix: one of
l L
long-long-suffix: one of
ll LL
size-suffix: one of
z Z
encoding-prefix: one of
u8  u  U  L
basic-c-char:
any member of the translation character set except the U+0027 apostrophe,
   U+005c reverse solidus, or new-line character
simple-escape-sequence-char: one of
' " ? \ a b f n r t v
conditional-escape-sequence-char:
any member of the basic character set that is not an octal-digit, a simple-escape-sequence-char, or the characters N, o, u, U, or x
sign: one of
+ -
floating-point-suffix: one of
f l f16 f32 f64 f128 bf16 F L F16 F32 F64 F128 BF16
basic-s-char:
any member of the translation character set except the U+0022 quotation mark,
   U+005c reverse solidus, or new-line character
r-char:
any member of the translation character set, except a U+0029 right parenthesis followed by
   the initial d-char-sequence (which may be empty) followed by a U+0022 quotation mark
d-char:
any member of the basic character set except:
   U+0020 space, U+0028 left parenthesis, U+0029 right parenthesis, U+005c reverse solidus,
   U+0009 character tabulation, U+000b line tabulation, U+000c form feed, and new-line
boolean-literal:
false
true