Annex A (informative) Grammar summary [gram]

A.8 Classes [gram.class]

class-name:
identifier
simple-template-id
class-specifier:
class-head { member-specification }
class-head:
class-key attribute-specifier-seq class-head-name class-virt-specifier base-clause
class-key attribute-specifier-seq base-clause
class-head-name:
nested-name-specifier class-name
class-virt-specifier:
final
class-key:
class
struct
union
member-specification:
member-declaration member-specification
access-specifier : member-specification
member-declaration:
attribute-specifier-seq decl-specifier-seq member-declarator-list ;
function-definition
using-declaration
using-enum-declaration
static_assert-declaration
template-declaration
explicit-specialization
deduction-guide
alias-declaration
opaque-enum-declaration
empty-declaration
member-declarator-list:
member-declarator
member-declarator-list , member-declarator
member-declarator:
declarator virt-specifier-seq pure-specifier
declarator requires-clause
declarator brace-or-equal-initializer
identifier attribute-specifier-seq : constant-expression brace-or-equal-initializer
virt-specifier-seq:
virt-specifier
virt-specifier-seq virt-specifier
virt-specifier:
override
final
pure-specifier:
= 0
conversion-function-id:
operator conversion-type-id
conversion-type-id:
type-specifier-seq conversion-declarator
conversion-declarator:
ptr-operator conversion-declarator
base-clause:
: base-specifier-list
base-specifier-list:
base-specifier ...
base-specifier-list , base-specifier ...
base-specifier:
attribute-specifier-seq class-or-decltype
attribute-specifier-seq virtual access-specifier class-or-decltype
attribute-specifier-seq access-specifier virtual class-or-decltype
class-or-decltype:
nested-name-specifier type-name
nested-name-specifier template simple-template-id
decltype-specifier
access-specifier:
private
protected
public
ctor-initializer:
: mem-initializer-list
mem-initializer-list:
mem-initializer ...
mem-initializer-list , mem-initializer ...
mem-initializer:
mem-initializer-id ( expression-list )
mem-initializer-id braced-init-list
mem-initializer-id:
class-or-decltype
identifier