Question

主题	描述
A.8.1 Concatenations	concatenation ::= { expression { , expression } } | { struct_member_label : expression { , struct_member_label : expression } } | { array_member_label : expression { , array_member_label : expression } } constant_concatenation ::= { constant_expression { , constant_expression } } | { struct_member_label : constant_expression { , struct_member_label : constant_expression } } | { array_member_label : constant_expression { , array_member_label : constant_expression } } struct_member_label ::= default | type_identifier | variable_identifier array_member_label ::= default | type_identifier | constant_expression constant_multiple_concatenation ::= { constant_expression constant_concatenation } module_path_concatenation ::= { module_path_expression { , module_path_expression } } module_path_multiple_concatenation ::= { constant_expression module_path_concatenation... more
A.8.2 Subroutine calls	constant_function_call ::= function_subroutine_call25 tf_call ::= ps_or_hierarchical_tf_identifier { attribute_instance } [ ( list_of_arguments ) ] system_tf_call ::= system_tf_identifier [ ( list_of_arguments ) ] subroutine_call ::= tf_call | system_tf_call | method_call | randomize_call function_subroutine_call ::= subroutine_call list_of_arguments ::= [ expression ] { , [ expression ] } { , . identifier ( [ expression ] ) } | . identifier ( [ expression ] ) { , . identifier ( [ expression ] ) } method_call ::= method_call_root . method_call_body method_call_body ::= method_identifier { attribute_instance } [ ( list_of_arguments ) ] | built_in_method_call built_in_method_call ::= array_manipulation_call | randomize_call array_manipulation_call ::= array_method_name {... more
A.8.3 Expressions	inc_or_dec_expression ::= inc_or_dec_operator { attribute_instance } variable_lvalue | variable_lvalue { attribute_instance } inc_or_dec_operator conditional_expression ::= cond_predicate ? { attribute_instance } expression : expression constant_expression ::= constant_primary | unary_operator { attribute_instance } constant_primary | constant_expression binary_operator { attribute_instance } constant_expression | constant_expression ? { attribute_instance } constant_expression : constant_expression constant_mintypmax_expression ::= constant_expression | constant_expression : constant_expression : constant_expression constant_param_expression ::= constant_mintypmax_expression | data_type | $ param_expression ::= mintypmax_expression | data_type constant_range_expression ::= constant_expression | constant_part_select_range constant_part_select_range ::= constant_range | constant_indexed_range constant_range ::= constant_expression : constant_expression constant_indexed_range ::= constant_expression +: constant_expression | constant_expression -: constant_expression expression ::= primary | unary_operator { attribute_instance... more
A.8.4 Primaries	constant_primary ::= primary_literal | ps_parameter_identifier | ps_specparam_identifier | genvar_identifier | [ package_scope | class_scope ] enum_identifier | constant_concatentation | constant_multiple_concatenation | constant_function_call | ( constant_mintypmax_expression ) | constant_cast module_path_primary ::= number | identifier | module_path_concatenation | module_path_multiple_concatenation | function_subroutine_call | ( module_path_mintypmax_expression ) primary ::= primary_literal | [ implicit_class_handle . | class_scope | package_scope ] hierarchical_identifier select | empty_queue | concatenation | multiple_concatenation | function_subroutine_call | ( mintypmax_expression ) | cast | streaming_expression | sequence_method_call | $23 | null time_literal5 ::= unsigned_number time_unit | fixed_point_number time_unit time_unit ::= s | ms | us | ns | ps | fs |... more
A.8.5 Expression left-side values	net_lvalue ::= ps_or_hierarchical_net_identifier constant_select | { net_lvalue { , net_lvalue } } variable_lvalue ::= [ implicit_class_handle . | package_scope ] hierarchical_variable_identifier select | { variable_lvalue { , variable_lvalue } }
A.8.6 Operators	unary_operator ::= + | - | ! | ~ | & | ~& | | | ~| | ^ | ~^ | ^~ binary_operator ::= + | - | * | / | % | == | != | === | !== | =?= | !?= | && | || | ** | < | <= | > | >= | & | | | ^ | ^~ | ~^ | >> | << | >>> | <<< inc_or_dec_operator ::= ++ | -- unary_module_path_operator ::= ! | ~ | & | ~& | | | ~| | ^ | ~^... more
A.8.7 Numbers	number ::= integral_number | real_number integral_number ::= decimal_number | octal_number | binary_number | hex_number decimal_number ::= unsigned_number | [ size ] decimal_base unsigned_number | [ size ] decimal_base x_digit { _ } | [ size ] decimal_base z_digit { _ } binary_number ::= [ size ] binary_base binary_value octal_number ::= [ size ] octal_base octal_value hex_number ::= [ size ] hex_base hex_value sign ::= + | - size ::= non_zero_unsigned_number non_zero_unsigned_number1 ::= non_zero_decimal_digit { _ | decimal_digit} real_number1 ::= fixed_point_number | unsigned_number [ . unsigned_number ] exp [ sign ] unsigned_number fixed_point_number1 ::= unsigned_number . unsigned_number exp ::= e |... more
A.8.8 Strings	string_literal ::= " { Any_ASCII_Characters }