EBNF Syntax: C# 1.0/2.0/3.0/4.0/5.0

Syntax Productions

Start Symbol (c_sharp)

Name	Production
accessor_body	block ";"(C# 3.0 up)
accessor_declaraions	get_accessor_declaration [ set_accessor_declaration ](#1) set_accessor_declaration [ get_accessor_declaration ](#1)
accessor_modifier	( "protected" [ "internal" ] )(C# 2.0 up) ( "internal" [ "protected" ] )(C# 2.0 up) "private"(C# 2.0 up)
accessor_prefix	[ attributes ] [ accessor_modifier ](C# 2.0 up)
add_accessor_declaration	[ attributes ] "add" block
additive_expression	multiplicative_expression { ( "+" | "-" ) multiplicative_expression }
addressof_expression	( "&" unary_expression )(unsafe)
and_expression	equality_expression { "&" equality_expression }
anonymous_method_body	expression(C# 3.0 up) block(C# 3.0 up)
anonymous_method_expression	( [ "async" ](C# 5.0 up) "delegate" [ explicit_anonymous_method_signature ] block )(C# 2.0 up)
anonymous_method_signature	explicit_anonymous_method_signature(C# 2.0 up)(#2) implicit_anonymous_method_signature(C# 2.0 up)(#2)
anonymous_object_creation_expression	( "new" anonymous_object_initializer )(C# 3.0 up)
anonymous_object_initializer	( "{" [ member_declarator_list [ "," ] ] "}" )(C# 3.0 up)
argument	[ argument_name ](C# 4.0 up)(#3) argument_value(#3)
argument_list	argument { "," argument }
argument_name	identifier ":"
argument_value	expression ( "ref" | "out" ) variable_reference
array_creation_expression	"new" non_array_type "[" expression_list "]" [ rank_specifier ] [ array_initializer ](#4) "new" array_type array_initializer(#4) ( "new" rank_specifier array_initializer )(C# 3.0 up)(#4)
array_initializer	"{" [ variable_initializer_list [ "," ] ] "}"
array_type	non_array_type rank_specifier { rank_specifier }
assignment	unary_expression assignment_operator expression
assignment_operator	"=" "+=" "-=" "*=" "/=" "%=" "&=" "|=" "^=" "<<=" right_shift_assignment
asterisks	"*" { "*" }
attribute	attribute_name [ attribute_arguments ]
attribute_argument_list	[ positional_argument_list ](#5)(#6) positional_argument_list "," named_argument_list(#5)(#6) named_argument_list(#6)
attribute_arguments	"(" attribute_argument_list ")"
attribute_list	attribute { "," attribute }
attribute_name	type_name
attribute_section	"[" [ attribute_target_specifier ] attribute_list [ "," ] "]"
attribute_target	"field" "event" "method" "module"(C# 1.0 to 4.0) "param" "property" "return" "type"
attribute_target_specifier	attribute_target ":"
attributes	attribute_section { attribute_section }
available_identifier	ANY_IDENTIFIER_EXCEPT_keyword
await_expression	( "await" unary_expression )(C# 5.0 up)
base_access	"base" base_access_suffix
base_access_element_list	expression_list(C# 1.0 to 4.0)(#7) argument_list(C# 5.0 up)(#7)
base_access_suffix	"." identifier [ type_argument_list ](C# 2.0 to 4.0) "[" base_access_element_list "]"
binary_operator_declarator	type "operator" overloadable_binary_operator "(" type identifier "," type identifier ")"
block	"{" { statement } "}"
boolean_literal	"true" "false"
break_statement	"break" ";"
buffer_element_type	type(unsafe)(C# 5.0 up)
c_sharp	lexical_grammar(#8) syntactic_grammar(#8)
cast_expression	"(" type ")" unary_expression
catch_clauses	specific_catch_clauses [ general_catch_clause ](#9) general_catch_clause(#9)
character	single_character simple_escape_sequence hexadecimal_escape_sequence unicode_escape_sequence
character_literal	"'" character "'"
checked_expression	"checked" "(" expression ")"
checked_statement	"checked" block
class_base	":" class_type [ "," interface_type_list ](#10) ":" interface_type_list(#10)
class_body	"{" { class_member_declaration } "}"
class_declaration	class_prefix "class" identifier class_suffix class_body [ ";" ]
class_member_declaration	constant_declaration(#13)(#16)(#17)(#19) field_declaration(#11)(#13)(#15)(#16)(#17)(#18)(#19)(#21) method_declaration(#11)(#13)(#14)(#15)(#16)(#17)(#18)(#19)(#20)(#21)(#22)(#23) property_declaration(#11)(#13)(#14)(#15)(#16)(#17)(#18)(#19)(#20)(#21)(#22) event_declaration(#13)(#14)(#15)(#16)(#17)(#18)(#19)(#20)(#22) indexer_declaration(#11)(#13)(#14)(#15)(#16)(#17)(#19)(#20)(#21)(#22) operator_declaration(#11)(#14)(#15)(#16)(#18)(#19)(#21) constructor_declaration(#13)(#14)(#15)(#16)(#19)(#21) finalizer_declaration(C# 1.0 to 4.0)(#12)(#14)(#15)(#16) destructor_declaration(C# 5.0 up)(#12)(#14)(#15)(#16) static_constructor_declaration(#14)(#15)(#16)(#18) type_declaration(#13)(#15)(#16)(#17)(#18)(#19)(#22)(#23)
class_modifier	"new" "public" "protected" "internal" "private" "abstract" "sealed" "static"(C# 2.0 up) "unsafe"(unsafe)
class_prefix	[ attributes ] { class_modifier } [ "partial" ](C# 2.0 up)
class_suffix	[ type_parameter_list ](C# 2.0 up) [ class_base ] [ type_parameter_constraints_clauses ](C# 2.0 up)
class_type	type_name "object" "dynamic"(C# 4.0 up) "string"
collection_initializer	"{" element_initializer_list [ "," ] "}"
combining_character	ANY_UNICODE_Mn_Mc ANY_uXXXX_Mn_Mc ANY_UXXXXXXXX_Mn_Mc
comment	single_line_comment delimited_comment
compilation_unit	[ extern_alias_directives ](C# 2.0 up) [ using_directives ] [ global_attributes ](#24) [ namespace_member_declarations ](#24)
conditional_and_expression	inclusive_or_expression { "&&" inclusive_or_expression }
conditional_expression	null_coalescing_expression [ "?" expression ":" expression ]
conditional_or_expression	conditional_and_expression { "||" conditional_and_expression }
conditional_section	input_section(#25) skipped_section(#25)
conditional_symbol	identifier ANY_keyword_EXCEPT_true_false
connecting_character	ANY_UNICODE_Pc ANY_uXXXX_Pc ANY_UXXXXXXXX_Pc
constant_declaration	constant_prefix "const" type constant_declarators ";"
constant_declarator	identifier "=" constant_expression
constant_declarators	constant_declarator { "," constant_declarator }
constant_modifier	"new" "public" "protected" "internal" "private"
constant_prefix	[ attributes ] { constant_modifier }
constructor_body	block ";"
constructor_constraint	( "new" "(" ")" )(C# 2.0 up)
constructor_declaration	constructor_prefix constructor_declatator constructor_body
constructor_declatator	identifier "(" [ formal_parameter_list ] ")" [ constructor_initializer ]
constructor_initializer	"base" "(" [ argument_list ] ")" "this" "(" [ argument_list ] ")"
constructor_modifier	"public" "protected" "internal" "private" "extern" "unsafe"(unsafe)
constructor_prefix	[ attributes ] { constructor_modifier }
continue_statement	"continue" ";"
conversion_operator_declarator	"implicit" "operator" type "(" type identifier ")" "explicit" "operator" type "(" type identifier ")"
decimal_digit	"0" "1" "2" "3" "4" "5" "6" "7" "8" "9"
decimal_digit_character	ANY_UNICODE_Nd ANY_uXXXX_Nd ANY_UXXXXXXXX_Nd
decimal_digits	decimal_digit { decimal_digit }
decimal_integer_literal	decimal_digits [ integer_type_suffix ]
declaration_statement	local_variable_declaration ";" local_constant_declaration ";"
default_argument	"=" expression
default_value_expression	"default" "(" type ")"
delegate_creation_expression	"new" delegate_type "(" expression ")"
delegate_declaration	delegate_prefix "delegate" return_type identifier delegate_suffix ";"
delegate_modifier	"new" "public" "protected" "internal" "private" "unsafe"(unsafe)
delegate_prefix	[ attributes ] { delegate_modifier }
delegate_suffix	[ variant_type_parameter_list ](C# 2.0 up) "(" [ formal_parameter_list ] ")" [ type_parameter_constraints_clauses ](C# 2.0 up)
delegate_type	type_name
delimited_comment	"/*" { delimited_comment_section } asterisks "/"
delimited_comment_section	non_asterisk asterisks non_slash
destructor_body	block(C# 5.0 up) ";"(C# 5.0 up)
destructor_declaration	( destructor_prefix "~" identifier "(" ")" destructor_body )(C# 5.0 up)
destructor_modifier	"extern"(C# 5.0 up) "unsafe"(unsafe)(C# 5.0 up)
destructor_prefix	[ attributes ](C# 5.0 up) { destructor_modifier }(C# 5.0 up)
do_statement	"do" embedded_statement "while" "(" boolean_expression ")" ";"
element_access	primary_no_array_creation_expression "[" expression_list "]"
element_initializer	non_assignment_expression "{" expression "}"
element_initializer_list	element_initializer { "," element_initializer }
embedded_statement	[ "unsafe" ](unsafe) block empty_statement expression_statement(#26)(#27) selection_statement iteration_statement jump_statement try_statement checked_statement(#26) unchecked_statement(#27) lock_statement using_statement yield_statement(C# 2.0 up) fixed_statement(unsafe)
empty_statement	";"
enum_base	integral_type
enum_body	"{" [ enum_member_declarations [ "," ] ] "}"
enum_declaration	enum_prefix "enum" identifier enum_suffix enum_body [ ";" ]
enum_member_declaration	[ attributes ] identifier [ "=" constant_expression ]
enum_member_declarations	enum_member_declaration { "," enum_member_declaration }
enum_modifier	"new" "public" "protected" "internal" "private"
enum_prefix	[ attributes ] { enum_modifier }
enum_suffix	[ ":" enum_base ]
enum_type	type_name
equality_expression	relational_expression { ( "==" | "!=" ) relational_expression }
event_accessor_declarations	add_accessor_declaration remove_accessor_declaration(#28) remove_accessor_declaration add_accessor_declaration(#28)
event_declaration	event_prefix "event" type event_suffix
event_modifier	"new" "public" "protected" "internal" "private" "static" "virtual" "sealed" "override" "abstract" "extern" "unsafe"(unsafe)
event_prefix	[ attributes ] { event_modifier }
event_suffix	variable_declarators ";"(#29) member_name "{" event_accessor_declarations "}"(#29)
exclusive_or_expression	and_expression { "^" and_expression }
explicit_anonymous_method_parameter	( [ explicit_parameter_modifier ] type identifier )(C# 2.0 up)
explicit_anonymous_method_parameter_list	( explicit_anonymous_method_parameter { "," explicit_anonymous_method_parameter } )(C# 2.0 up)
explicit_anonymous_method_signature	( "(" [ explicit_anonymous_method_parameter_list ] ")" )(C# 2.0 up)
explicit_parameter_modifier	"ref"(C# 2.0 up) "out"(C# 2.0 up)
exponent_part	( "e" | "E" ) [ sign ] decimal_digits
expression	non_assignment_expression(#30) assignment(#30)
expression_list	expression { "," expression }
expression_statement	statement_expression ";"
extern_alias_directive	"extern" "alias" identifier ";"
extern_alias_directives	extern_alias_directive { extern_alias_directive }
field_declaration	field_prefix type variable_declarators ";"
field_modifier	"new" "public" "protected" "internal" "private" "static" "readonly" "volatile" "unsafe"(unsafe)
field_prefix	[ attributes ] { field_modifier }
file_name	'"' file_name_character { file_name_character } '"'
file_name_character	ANY_UNICODE_EXCEPT_u0022_new_line
finalizer_body	block(C# 1.0 to 4.0) ";"(C# 1.0 to 4.0)
finalizer_declaration	( finalizer_prefix "~" identifier "(" ")" finalizer_body )(C# 1.0 to 4.0)
finalizer_modifier	"extern"(C# 1.0 to 4.0) "unsafe"(unsafe)(C# 1.0 to 4.0)
finalizer_prefix	[ attributes ](C# 1.0 to 4.0) { finalizer_modifier }(C# 1.0 to 4.0)
finally_clause	"finally" block
fixed_parameter	parameter_prefix type identifier [ default_argument ](C# 4.0 up)
fixed_pointer_declarator	( identifier "=" fixed_pointer_initializer )(unsafe)
fixed_pointer_declarators	( fixed_pointer_declarator { "," fixed_pointer_declarator } )(unsafe)
fixed_pointer_initializer	( "&" variable_reference )(unsafe)(#31) expression(unsafe)(#31)
fixed_size_buffer_declaration	( [ attributes ] { fixed_size_buffer_modifier } "fixed" buffer_element_type fixed_size_buffer_declarators ";" )(unsafe)(C# 5.0 up)
fixed_size_buffer_declarator	( identifier "[" expression "]" )(unsafe)(C# 5.0 up)
fixed_size_buffer_declarators	( fixed_size_buffer_declarator { fixed_size_buffer_declarator } )(unsafe)(C# 5.0 up)
fixed_size_buffer_modifier	"new"(unsafe)(C# 5.0 up) "public"(unsafe)(C# 5.0 up) "protected"(unsafe)(C# 5.0 up) "internal"(unsafe)(C# 5.0 up) "private"(unsafe)(C# 5.0 up) "unsafe"(unsafe)(C# 5.0 up)
fixed_statement	( "fixed" "(" pointer_type fixed_pointer_declarators ")" embedded_statement )(unsafe)
floating_point_type	"float" "double"
for_initializer	local_variable_declaration(#32) statement_expression_list(#32)
for_iterator	statement_expression_list
for_statement	"for" "(" [ for_initializer ] ";" [ boolean_expression ] ";" [ for_iterator ] ")" embedded_statement
foreach_statement	"foreach" "(" local_variable_type identifier "in" expression ")" embedded_statement
formal_parameter_list	fixed_parameter { "," fixed_parameter } [ "," parameter_array ](#33) parameter_array(#33)
formatting_character	ANY_UNICODE_Cf ANY_uXXXX_Cf ANY_UXXXXXXXX_Cf
from_clause	( "from" [ type ] identifier "in" expression )(C# 3.0 up)
general_catch_clause	"catch" block
generic_dimension_specifier	"<" { "," } ">"
get_accessor_declaration	accessor_prefix "get" accessor_body
global_attribute_section	"[" global_attribute_target_specifier attribute_list [ "," ] "]"
global_attribute_target	"assembly" "module"
global_attribute_target_specifier	global_attribute_target ":"
global_attributes	global_attribute_section { global_attribute_section }
goto_label	identifier "case" constant_expression "default"
goto_statement	"goto" goto_label ";"
group_clause	( "group" expression "by" expression )(C# 3.0 up)
hex_digit	decimal_digit "a" "b" "c" "d" "e" "f" "A" "B" "C" "D" "E" "F"
hex_digits	hex_digit { hex_digit }
hexadecimal_escape_sequence	"\x" hex_digit [ hex_digit ] [ hex_digit ] [ hex_digit ]
hexadecimal_integer_literal	( "0x" | "0X" ) hex_digits [ integer_type_suffix ]
identifier	available_identifier "@" identifier_or_keyword
identifier_or_keyword	identifier_start_character { identifier_part_character }
identifier_part_character	letter_character decimal_digit_character connecting_character combining_character formatting_character
identifier_start_character	letter_character "_"
if_statement	"if" "(" boolean_expression ")" embedded_statement [ "else" embedded_statement ]
implicit_anonymous_method_parameter	identifier(C# 2.0 up)
implicit_anonymous_method_parameter_list	( implicit_anonymous_method_parameter { "," implicit_anonymous_method_parameter } )(C# 2.0 up)
implicit_anonymous_method_signature	( "(" [ implicit_anonymous_method_parameter_list ] ")" )(C# 2.0 up) implicit_anonymous_method_parameter(C# 2.0 up)
inclusive_or_expression	exclusive_or_expression { "|" exclusive_or_expression }
indexer_declaration	indexer_prefix indexer_declarator "{" accessor_declaraions "}"
indexer_declarator	type [ interface_type "." ] "this" "[" formal_parameter_list "]"
indexer_modifier	"new" "public" "protected" "internal" "private" "virtual" "sealed" "override" "abstract" "extern" "unsafe"(unsafe)
indexer_prefix	[ attributes ] { indexer_modifier }
initializer_value	expression object_or_collection_initializer
input	[ input_section ]
input_character	ANY_UNICODE_EXCEPT_new_line
input_element	whitespace comment token
input_section	input_section_part { input_section_part }
input_section_part	{ input_element } new_line(#34) pp_directive(#34)
integer_literal	decimal_integer_literal hexadecimal_integer_literal
integer_type_suffix	"u" "U" "l" "L" "ul" "uL" "Ul" "UL" "lu" "lU" "Lu" "LU"
integral_type	"sbyte" "byte" "short" "ushort" "int" "uint" "long" "ulong" "char"
intercface_base	":" interface_type_list
interface_accessor	interface_get_accessor [ interface_set_accessor ](#35) interface_set_accessor [ interface_get_accessor ](#35)
interface_body	"{" { interface_member_delcaration } "}"
interface_declaration	interface_prefix "interface" identifier interface_suffix interface_body [ ";" ]
interface_event_declaration	[ attributes ] [ "new" ] "event" type identifier ";"
interface_get_accessor	[ attributes ] "get" ";"
interface_indexer_declaration	[ attributes ] [ "new" ] type "this" "[" formal_parameter_list "]" "{" interface_accessor "}"
interface_member_delcaration	interface_method_declaration(#36)(#37) interface_property_declaration(#36)(#37) interface_event_declaration(#37) interface_indexer_declaration(#36)(#37)
interface_method_declaration	[ attributes ] [ "new" ] return_type identifier [ type_parameter_list ](C# 2.0 up) "(" [ formal_parameter_list ] ")" [ type_parameter_constraints_clauses ](C# 2.0 up) ";"
interface_modifier	"new" "public" "protected" "internal" "private" "unsafe"(unsafe)
interface_prefix	[ attributes ] { interface_modifier } [ "partial" ](C# 2.0 up)
interface_property_declaration	[ attributes ] [ "new" ] type identifier "{" interface_accessor "}"
interface_set_accessor	[ attributes ] "set" ";"
interface_suffix	[ variant_type_parameter_list ](C# 2.0 up) [ intercface_base ] [ type_parameter_constraints_clauses ](C# 2.0 up)
interface_type	type_name
interface_type_list	interface_type { "," interface_type }
invocation_expression	primary_expression "(" [ argument_list ] ")"
iteration_statement	while_statement do_statement for_statement foreach_statement
join_clause	( "join" [ type ] identifier "in" expression "on" expression "equals" expression )(C# 3.0 up)
join_into_clause	( join_clause "into" identifier )(C# 3.0 up)
jump_statement	break_statement continue_statement goto_statement return_statement throw_statement
keyword	"abstract" "as" "base" "bool" "break" "byte" "case" "catch" "char" "checked" "class" "const" "continue" "decimal" "default" "delegate" "do" "double" "dynamic"(C# 4.0 only) "else" "enum" "event" "explicit" "extern" "false" "finally" "fixed" "float" "for" "foreach" "goto" "if" "implicit" "in" "int" "interface" "internal" "is" "lock" "long" "namespace" "new" "null" "object" "operator" "out" "override" "params" "private" "protected" "public" "readonly" "ref" "return" "sbyte" "sealed" "short" "sizeof" "stackalloc" "static" "string" "struct" "switch" "this" "throw" "true" "try" "typeof" "uint" "ulong" "unchecked" "unsafe" "ushort" "using" "virtual" "void" "volatile" "while"
labeled_statement	identifier ":" statement
lambda_expression	( [ "async" ](C# 5.0 up) anonymous_method_signature "=>" anonymous_method_body )(C# 3.0 up)
let_clause	( "let" identifier "=" expression )(C# 3.0 up)
letter_character	ANY_UNICODE_Lu_Ll_Lt_Lm_Lo_Ni ANY_uXXXX_Lu_Ll_Lt_Lm_Lo_Ni ANY_UXXXXXXXX_Lu_Ll_Lt_Lm_Lo_Ni
lexical_grammar	input
line_indicator	decimal_digits [ ws file_name ] "default"(C# 3.0 up) "hidden"(C# 3.0 up) identifier_or_keyword
literal	boolean_literal integer_literal(#38) real_literal(#38) character_literal string_literal null_literal
local_constant_declaration	"const" type constant_declarators
local_variable_declaration	local_variable_type local_variable_declarator { "," local_variable_declarator }
local_variable_declarator	identifier [ "=" local_variable_initializer ]
local_variable_initializer	expression array_initializer stackalloc_initializer(unsafe)
local_variable_type	type "var"(C# 3.0 up)
lock_statement	"lock" "(" expression ")" embedded_statement
member_access	member_access_prefix "." member_access_suffix(#39) ( qualified_alias_member "." identifier )(C# 2.0 up)(#39)
member_access_prefix	primary_expression(#40) predefined_type(#40)
member_access_suffix	identifier [ type_argument_list ](C# 2.0 up)
member_declarator	simple_name(C# 3.0 up)(#41) member_access(C# 3.0 up)(#41) ( identifier "=" expression )(C# 3.0 up)(#41)
member_declarator_list	( member_declarator { "," member_declarator } )(C# 3.0 up)
member_initializer	identifier "=" initializer_value
member_initializer_list	member_initializer { "," member_initializer }
member_name	[ interface_type "." ](#42) identifier(#42)
method_body	block ";"
method_declaration	method_header method_body
method_header	method_prefix return_type member_name [ type_parameter_list ](C# 2.0 up) "(" [ formal_parameter_list ] ")" [ type_parameter_constraints_clauses ](C# 2.0 up)
method_modifier	"new" "public" "protected" "internal" "private" "static" "virtual" "sealed" "override" "abstract" "extern" "async"(C# 5.0 up) "unsafe"(unsafe)
method_prefix	[ attributes ] { method_modifier } [ "partial" ](C# 3.0 up)
multiplicative_expression	unary_expression { ( "*" | "/" | "%" ) unary_expression }
named_argument	identifier "=" expression
named_argument_list	named_argument { "," named_argument }
namespace_body	"{" [ extern_alias_directives ](C# 2.0 up) [ using_directives ] [ namespace_member_declarations ] "}"
namespace_declaration	"namespace" qualified_identifier namespace_body [ ";" ]
namespace_member_declaration	namespace_declaration type_declaration
namespace_member_declarations	namespace_member_declaration { namespace_member_declaration }
namespace_name	namespace_or_type_name
namespace_or_type_name	namespace_or_type_name_prefix { "." namespace_or_type_name_part }
namespace_or_type_name_part	identifier [ type_argument_list ](C# 2.0 up)
namespace_or_type_name_prefix	namespace_or_type_name_part(#43) qualified_alias_member(C# 2.0 up)(#43)
new_line	CR_u000D [ LF_u000A ] LF_u000A NL_u0085 LS_u2028 PS_u2029
non_array_type	value_type(C# 1.0 to 4.0)(#44)(#45)(#46) class_type(C# 1.0 to 4.0)(#45)(#46) interface_type(C# 1.0 to 4.0)(#45) delegate_type(C# 1.0 to 4.0)(#45) type_parameter(C# 2.0 up)(C# 1.0 to 4.0)(#45) type(C# 5.0 up)(#44)(#45)(#46)
non_assignment_expression	conditional_expression(#47) lambda_expression(C# 3.0 up)(#47) query_expression(C# 3.0 up)
non_asterisk	ANY_UNICODE_EXCEPT_u002A
non_nullable_value_type	enum_type(C# 2.0 to 4.0)(#49) type_name(C# 2.0 to 4.0)(#49) simple_type(C# 2.0 to 4.0)(#48) type(C# 5.0 up)(#48)(#49)
non_slash	ANY_UNICODE_EXCEPT_u002F
not_number_sign	ANY_UNICODE_EXCEPT_u0023_new_line
null_coalescing_expression	conditional_or_expression [ "??" null_coalescing_expression ](C# 2.0 up)
null_literal	"null"
nullable_type	( non_nullable_value_type "?" )(C# 2.0 up)
numeric_type	integral_type floating_point_type "decimal"
object_creation_expression	"new" type "(" [ argument_list ] ")" [ object_or_collection_initializer ](C# 3.0 up)(#50) ( "new" type [ object_or_collection_initializer ] )(C# 3.0 up)(#50)
object_initializer	"{" [ member_initializer_list [ "," ] ] "}"
object_or_collection_initializer	object_initializer(#51) collection_initializer(#51)
operator_body	block ";"
operator_declaration	operator_prefix operator_declarator operator_body
operator_declarator	unary_operator_declarator(#52) binary_operator_declarator(#52) conversion_operator_declarator
operator_modifier	"public" "static" "extern" "unsafe"(unsafe)
operator_or_punctuation	"{" "}" "[" "]" "(" ")" "." "," ":" ";" "+" "-" "*" "/" "%" "&" "|" "^" "!" "~" "=" "<" ">" "?" "??"(C# 2.0 up) "::"(C# 2.0 up) "++" "--" "&&" "||" "->" "==" "!=" "<=" ">=" "+=" "-=" "*=" "/=" "%=" "&=" "|=" "^=" "<<" "<<=" "=>"(C# 3.0 up)
operator_prefix	[ attributes ] { operator_modifier }
orderby_clause	( "orderby" ordering { "," ordering } )(C# 3.0 up)
ordering	( expression [ ordering_direction ] )(C# 3.0 up)
ordering_direction	"ascending"(C# 3.0 up) "descending"(C# 3.0 up)
overloadable_binary_operator	"+" "-" "*" "/" "%" "&" "|" "^" "<<" right_shift(#53) "==" "!=" "<" ">"(#53) "<=" ">="
overloadable_unary_operator	"+" "-" "!" "~" "++" "--" "true" "false"
parameter_array	[ attributes ] "params" array_type identifier
parameter_modifier	"ref" "out" "this"(C# 3.0 up)
parameter_prefix	[ attributes ] [ parameter_modifier ]
parenthesized_expression	"(" expression ")"
pointer_element_expression	( primary_no_array_creation_expression "[" expression "]" )(unsafe)
pointer_indirection_expression	( "*" unary_expression )(unsafe)
pointer_member_expression	( primary_expression "->" identifier [ type_argument_list ](C# 2.0 up) )(unsafe)
pointer_type	( unmanaged_type "*" )(unsafe)(#54) ( "void" "*" )(unsafe)(#54)
positional_argument	( [ argument_name ](#55) expression(#55) )(C# 5.0 up)
positional_argument_list	argument_list(C# 1.0 to 4.0)(#56) ( positional_argument { "," positional_argument } )(C# 5.0 up)(#56)
post_decrement_expression	primary_expression "--"
post_increment_expression	primary_expression "++"
pp_and_expression	pp_equality_expression { ws_opt "&&" ws_opt pp_equality_expression }
pp_conditional	pp_if_section { pp_elif_section } [ pp_else_section ] pp_endif
pp_declaration	ws_opt "#" ws_opt ( "define" | "undef" ) ws conditional_symbol pp_new_line
pp_diagnostic	ws_opt "#" ws_opt ( "error" | "warning" ) pp_message
pp_directive	pp_declaration(#57) pp_conditional(#57) pp_line(#57) pp_diagnostic(#57) pp_region(#57) pp_pragma(C# 2.0 up)(#57)
pp_elif_section	ws_opt "#" ws_opt "elif" ws pp_expression pp_new_line conditional_section
pp_else_section	ws_opt "#" ws_opt "else" pp_new_line conditional_section
pp_end_region	ws_opt "#" ws_opt "endregion" pp_message
pp_endif	ws_opt "#" ws_opt "endif" pp_new_line
pp_equality_expression	pp_unnary_expression { ws_opt ( "==" | "!=" ) ws_opt pp_unnary_expression }
pp_expression	ws_opt pp_or_expression ws_opt
pp_if_section	ws_opt "#" ws_opt "if" ws pp_expression pp_new_line conditional_section
pp_line	ws_opt "#" ws_opt "line" ws line_indicator pp_new_line
pp_message	[ ws { input_character } ] new_line
pp_new_line	ws_opt [ single_line_comment ] new_line
pp_or_expression	pp_and_expression { ws_opt "||" ws_opt pp_and_expression }
pp_pragma	( ws_opt "#" ws_opt "pragma" pp_pragma_body pp_new_line )(C# 2.0 up)
pp_pragma_body	pp_pragma_warning_body(C# 3.0 up) pp_pragma_text
pp_pragma_text	[ ws { input_character } ]
pp_pragma_warning_action	"disable" "restore"
pp_pragma_warning_body	"warning" ws pp_pragma_warning_action [ ws pp_pragma_warning_list ]
pp_pragma_warning_list	decimal_digits { ws_opt "," ws_opt decimal_digits }
pp_primary_expression	"true" "false" conditional_symbol "(" ws_opt pp_expression ws_opt ")"
pp_region	pp_start_region [ conditional_section ] pp_end_region
pp_start_region	ws_opt "#" ws_opt "region" pp_message
pp_unnary_expression	{ "!" ws_opt } pp_primary_expression
pre_decrement_expression	"--" unary_expression
pre_increment_expression	"++" unary_expression
predefined_type	"bool" "byte" "char" "decimal" "double" "float" "int" "long" "object" "sbyte" "short" "string" "uint" "ulong" "ushort" "dynamic"(C# 4.0 only)
primary_constraint	class_type(C# 2.0 up) "class"(C# 2.0 up) "struct"(C# 2.0 up)
primary_expression	array_creation_expression(#58) primary_no_array_creation_expression(#58)
primary_no_array_creation_expression	literal(#61) simple_name(#66) parenthesized_expression(#70) member_access(#59)(#60)(#61)(#62)(#63)(#64)(#65)(#66)(#67)(#68)(#69)(#70)(#71) invocation_expression(#59)(#60)(#61)(#62)(#63)(#64)(#65)(#66)(#67)(#68)(#69)(#70)(#71) element_access(#59)(#60)(#61)(#62)(#63)(#64)(#65)(#66)(#67)(#68)(#69)(#70)(#71) this_access(#65) base_access(#71) post_increment_expression(#59)(#60)(#61)(#62)(#63)(#64)(#65)(#66)(#67)(#68)(#69)(#70)(#71) post_decrement_expression(#59)(#60)(#61)(#62)(#63)(#64)(#65)(#66)(#67)(#68)(#69)(#70)(#71) object_creation_expression(#63) delegate_creation_expression(#63) anonymous_object_creation_expression(C# 3.0 up)(#63) typeof_expression(#69) checked_expression(#64) unchecked_expression(#60) default_value_expression(C# 2.0 up)(#68) anonymous_method_expression(C# 2.0 up)(#67) sizeof_expression(unsafe)(#62) pointer_member_expression(unsafe)(#59)(#60)(#61)(#62)(#63)(#64)(#65)(#66)(#67)(#68)(#69)(#70)(#71) pointer_element_expression(unsafe)(#59)(#60)(#61)(#62)(#63)(#64)(#65)(#66)(#67)(#68)(#69)(#70)(#71)
property_declaration	property_prefix type member_name "{" accessor_declaraions "}"
property_modifier	"new" "public" "protected" "internal" "private" "static" "virtual" "sealed" "override" "abstract" "extern" "unsafe"(unsafe)
property_prefix	[ attributes ] { property_modifier }
qualified_alias_member	identifier "::" identifier [ type_argument_list ](C# 2.0 up)
qualified_identifier	identifier { "." identifier }
query_body	( { query_body_clause } select_or_group_clause [ query_continuation ] )(C# 3.0 up)
query_body_clause	from_clause(C# 3.0 up) let_clause(C# 3.0 up) where_clause(C# 3.0 up) join_clause(C# 3.0 up)(#72) join_into_clause(C# 3.0 up)(#72) orderby_clause(C# 3.0 up)
query_continuation	( "into" identifier query_body )(C# 3.0 up)
query_expression	( from_clause query_body )(C# 3.0 up)
quote_excape_sequence	'""'
rank_specifier	"[" { "," } "]"
real_literal	[ decimal_digits ] "." decimal_digits [ exponent_part ] [ real_type_suffix ](#73) decimal_digits exponent_part [ real_type_suffix ](#73) decimal_digits real_type_suffix(#73)
real_type_suffix	"f" "F" "d" "D" "m" "M"
reference_type	class_type(#74)(#75) interface_type(#75) array_type(#74)(#75) delegate_type(#75)
regular_string_literal	'"' { regular_string_literal_character } '"'
regular_string_literal_character	single_regular_string_literal_character simple_escape_sequence hexadecimal_escape_sequence unicode_escape_sequence
relation_or_type_check	( "<" | ">" | "<=" | ">=" ) shift_expression ( "is" | "as" ) type
relational_expression	shift_expression { relation_or_type_check }
remove_accessor_declaration	[ attributes ] "remove" block
resource_acquisition	local_variable_declaration(#76) expression(#76)
return_statement	"return" [ expression ] ";"
return_type	type(#77) "void"(#77)
right_shift	">" ">"
right_shift_assignment	">" ">="
secondary_constraint	( interface_type { "," secondary_constraint } )(C# 2.0 up)(#78) ( type_parameter { "," secondary_constraint } )(C# 2.0 up)(#78)
select_clause	( "select" expression )(C# 3.0 up)
select_or_group_clause	select_clause(C# 3.0 up) group_clause(C# 3.0 up)
selection_statement	if_statement switch_statement
set_accessor_declaration	accessor_prefix "set" accessor_body
shift_expression	additive_expression { ( "<<" | right_shift ) additive_expression }
sign	"+" "-"
simple_escape_sequence	"\'" '\"' "\\" "\0" "\a" "\b" "\f" "\n" "\r" "\t" "\v"
simple_name	identifier [ type_argument_list ](C# 2.0 up)
simple_type	numeric_type "bool"
single_character	ANY_UNICODE_EXCEPT_u0027_u005C_new_line
single_line_comment	"//" { input_character }
single_regular_string_literal_character	ANY_UNICODE_EXCEPT_u0022_u005C_new_line
single_verbatim_string_literal_character	ANY_UNICODE_EXCEPT_u0022
sizeof_expression	( "sizeof" "(" unmanaged_type ")" )(unsafe)
skipped_characters	not_number_sign { input_character }
skipped_section	skipped_section_part { skipped_section_part }
skipped_section_part	ws_opt [ skipped_characters ] new_line(#79) pp_directive(#79)
specific_catch_clause	"catch" "(" class_type [ identifier ] ")" block
specific_catch_clauses	specific_catch_clause { specific_catch_clause }
stackalloc_initializer	( "stackalloc" unmanaged_type "[" expression "]" )(unsafe)
statement	labeled_statement(#81) declaration_statement(#80)(#81) embedded_statement(#80)(#81)
statement_expression	invocation_expression(#82)(#85) object_creation_expression(#85) assignment(#82)(#83)(#84)(#85)(#86) post_increment_expression(#82)(#85) post_decrement_expression(#82)(#85) pre_increment_expression(#83) pre_decrement_expression(#84) await_expression(C# 5.0 up)(#86)
statement_expression_list	statement_expression { "," statement_expression }
static_constructor_body	block ";"
static_constructor_declaration	static_constructor_prefix identifier "(" ")" static_constructor_body
static_constructor_modifier	"extern" "static" "unsafe"(unsafe)
static_constructor_prefix	[ attributes ] static_constructor_modifier { static_constructor_modifier }
string_literal	regular_string_literal verbatim_string_literal
struct_body	"{" { struct_member_declaration } "}"
struct_declaration	struct_prefix "struct" identifier struct_suffix struct_body [ ";" ]
struct_intercfaces	":" interface_type_list
struct_member_declaration	constructor_declaration(#88)(#89)(#91)(#94)(#96) field_declaration(#87)(#88)(#90)(#91)(#92)(#94)(#96) method_declaration(#87)(#88)(#89)(#90)(#91)(#92)(#93)(#94)(#95)(#96)(#97) property_declaration(#87)(#88)(#89)(#90)(#91)(#92)(#93)(#94)(#95)(#96) event_declaration(#87)(#88)(#89)(#91)(#92)(#93)(#95)(#96) indexer_declaration(#87)(#88)(#89)(#90)(#91)(#93)(#94)(#95)(#96) operator_declaration(#88)(#89)(#90)(#92)(#94)(#96) constructor_declaration(#88)(#89)(#91)(#94)(#96) static_constructor_declaration(#88)(#89)(#92) type_declaration(#87)(#88)(#91)(#92)(#93)(#96)(#97) fixed_size_buffer_declaration(unsafe)(C# 5.0 up)(#87)(#88)(#91)(#96)
struct_modifier	"new" "public" "protected" "internal" "private" "unsafe"(unsafe)
struct_prefix	[ attributes ] { struct_modifier } [ "partial" ](C# 2.0 up)
struct_suffix	[ type_parameter_list ](C# 2.0 up) [ struct_intercfaces ] [ type_parameter_constraints_clauses ](C# 2.0 up)
struct_type	type_name(#99) simple_type(#98) nullable_type(C# 2.0 up)(#98)(#99)
switch_block	"{" { switch_section } "}"
switch_label	"case" constant_expression ":" "default" ":"
switch_section	switch_label { switch_label } statement { statement }
switch_statement	"switch" "(" expression ")" switch_block
syntactic_grammar	compilation_unit
this_access	"this"
throw_statement	"throw" [ expression ] ";"
token	identifier keyword integer_literal(#100) real_literal(#100)(#101) character_literal string_literal operator_or_punctuation(#101)
try_statement	"try" block try_suffix
try_suffix	catch_clauses [ finally_clause ] finally_clause
type	value_type(#102)(#103)(#104) reference_type(#102)(#103)(#104) type_parameter(C# 2.0 up)(#102) "dynamic"(C# 4.0 only)(#104) pointer_type(unsafe)(#102)(#103)(#104)
type_argument	type(C# 2.0 up)
type_argument_list	( "<" type_arguments ">" )(C# 2.0 up)
type_arguments	( type_argument { "," type_argument } )(C# 2.0 up)
type_declaration	class_declaration(#105)(#106)(#107) struct_declaration(#105)(#106)(#107) interface_declaration(#105)(#106)(#107) enum_declaration(#105) delegate_declaration(#105)(#106)
type_name	namespace_or_type_name
type_parameter	identifier(C# 2.0 up)
type_parameter_constraints	( primary_constraint [ "," secondary_constraint ] [ "," constructor_constraint ] )(C# 2.0 up)(#108) ( secondary_constraint [ "," constructor_constraint ] )(C# 2.0 up)(#108) constructor_constraint(C# 2.0 up)
type_parameter_constraints_clause	( "where" type_parameter ":" type_parameter_constraints )(C# 2.0 up)
type_parameter_constraints_clauses	( type_parameter_constraints_clause { type_parameter_constraints_clause } )(C# 2.0 up)
type_parameter_list	( "<" type_parameters ">" )(C# 2.0 up)
type_parameters	( [ attributes ] type_parameter { "," [ attributes ] type_parameter } )(C# 2.0 up)
typeof_argument	type(#109)(#110) "void"(#110) unbound_type_name(C# 2.0 up)(#109)
typeof_expression	"typeof" "(" typeof_argument ")"
unary_expression	primary_expression(#111) "+" unary_expression "-" unary_expression "!" unary_expression "~" unary_expression pre_increment_expression pre_decrement_expression cast_expression(#111) await_expression(C# 5.0 up) pointer_indirection_expression(unsafe) addressof_expression(unsafe)
unary_operator_declarator	type "operator" overloadable_unary_operator "(" type identifier ")"
unbound_type_name	unbound_type_name_prefix { "." identifier [ generic_dimension_specifier ] }
unbound_type_name_prefix	identifier [ "::" identifier ] [ generic_dimension_specifier ]
unchecked_expression	"unchecked" "(" expression ")"
unchecked_statement	"unchecked" block
unicode_escape_sequence	"\u" hex_digit hex_digit hex_digit hex_digit "\U" hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit
unmanaged_type	type(unsafe)
using_alias_directive	"using" identifier "=" namespace_or_type_name ";"
using_directive	using_alias_directive(#112) using_namespace_directive(#112)
using_directives	using_directive { using_directive }
using_namespace_directive	"using" namespace_name ";"
using_statement	"using" "(" resource_acquisition ")" embedded_statement
value_type	struct_type(#113) enum_type(#113)
variable_declarator	identifier [ "=" variable_initializer ]
variable_declarators	variable_declarator { "," variable_declarator }
variable_initializer	expression array_initializer
variable_initializer_list	variable_initializer { "," variable_initializer }
variable_reference	expression
variance_annotation	"in"(C# 2.0 up) "out"(C# 2.0 up)
variant_prefix	( [ attributes ] [ variance_annotation ](C# 4.0 up) )(C# 2.0 up)
variant_type_parameter_list	( "<" variant_type_parameters ">" )(C# 2.0 up)
variant_type_parameters	( variant_prefix type_parameter { "," variant_prefix type_parameter } )(C# 2.0 up)
verbatim_string_literal	'@"' { verbatim_string_literal_character } '"'
verbatim_string_literal_character	single_verbatim_string_literal_character quote_excape_sequence
where_clause	( "where" boolean_expression )(C# 3.0 up)
while_statement	"while" "(" boolean_expression ")" embedded_statement
whitespace	whitespace_character { whitespace_character }
whitespace_character	ANY_UNICODE_Zs_CHAR HT_u0009 VT_u000B FF_u000C
ws	whitespace
ws_opt	[ ws ]
yield_statement	( "yield" yield_suffix ";" )(C# 2.0 up)
yield_suffix	( "return" expression )(C# 2.0 up) "break"(C# 2.0 up)

Variants