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sv2017Parser.g4
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sv2017Parser.g4
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parser grammar sv2017Parser;
options { tokenVocab=sv2017Lexer; }
library_text: ( library_description )*;
library_description:
library_declaration
| include_statement
| config_declaration
| SEMI;
library_declaration:
KW_LIBRARY identifier FILE_PATH_SPEC ( COMMA FILE_PATH_SPEC )*
( MINUS KW_INCDIR FILE_PATH_SPEC ( COMMA FILE_PATH_SPEC )* )? SEMI;
include_statement: KW_INCLUDE FILE_PATH_SPEC SEMI;
source_text: ( timeunits_declaration )? ( description )*;
description:
module_declaration
| udp_declaration
| interface_declaration
| program_declaration
| package_declaration
| ( attribute_instance )* ( package_item | bind_directive )
| config_declaration;
module_nonansi_header:
( attribute_instance )* module_keyword ( lifetime )? identifier
( package_import_declaration )* ( parameter_port_list )? list_of_ports SEMI;
module_ansi_header:
( attribute_instance )* module_keyword ( lifetime )? identifier
( package_import_declaration )* ( parameter_port_list )? ( list_of_port_declarations )? SEMI;
module_declaration:
module_nonansi_header ( timeunits_declaration )? ( module_item )*
KW_ENDMODULE ( COLON identifier )?
| module_ansi_header ( timeunits_declaration )? ( non_port_module_item )*
KW_ENDMODULE ( COLON identifier )?
| ( attribute_instance )* module_keyword ( lifetime )? identifier LPAREN DOT MUL RPAREN SEMI
( timeunits_declaration )? ( module_item )* KW_ENDMODULE ( COLON identifier )?
| KW_EXTERN ( module_nonansi_header | module_ansi_header )
;
module_keyword: KW_MODULE | KW_MACROMODULE;
interface_declaration:
interface_nonansi_header ( timeunits_declaration )? ( interface_item )*
KW_ENDINTERFACE ( COLON identifier )?
| interface_ansi_header ( timeunits_declaration )? ( non_port_interface_item )*
KW_ENDINTERFACE ( COLON identifier )?
| ( attribute_instance )* KW_INTERFACE identifier LPAREN DOT MUL RPAREN SEMI
( timeunits_declaration )? ( interface_item )*
KW_ENDINTERFACE ( COLON identifier )?
| KW_EXTERN ( interface_nonansi_header | interface_ansi_header )
;
interface_nonansi_header:
( attribute_instance )* KW_INTERFACE ( lifetime )? identifier
( package_import_declaration )* ( parameter_port_list )? list_of_ports SEMI;
interface_ansi_header:
( attribute_instance )* KW_INTERFACE ( lifetime )? identifier
( package_import_declaration )* ( parameter_port_list )? ( list_of_port_declarations )? SEMI;
program_declaration:
program_nonansi_header ( timeunits_declaration )? ( program_item )*
KW_ENDPROGRAM ( COLON identifier )?
| program_ansi_header ( timeunits_declaration )? ( non_port_program_item )*
KW_ENDPROGRAM ( COLON identifier )?
| ( attribute_instance )* KW_PROGRAM identifier LPAREN DOT MUL RPAREN SEMI
( timeunits_declaration )? ( program_item )*
KW_ENDPROGRAM ( COLON identifier )?
| KW_EXTERN ( program_nonansi_header | program_ansi_header )
;
program_nonansi_header:
( attribute_instance )* KW_PROGRAM ( lifetime )? identifier
( package_import_declaration )* ( parameter_port_list )? list_of_ports SEMI;
program_ansi_header:
( attribute_instance )* KW_PROGRAM ( lifetime )? identifier
( package_import_declaration )* ( parameter_port_list )? ( list_of_port_declarations )? SEMI;
checker_declaration:
KW_CHECKER identifier ( LPAREN ( checker_port_list )? RPAREN )? SEMI
( ( attribute_instance )* checker_or_generate_item )*
KW_ENDCHECKER ( COLON identifier )?;
class_declaration:
( KW_VIRTUAL )? KW_CLASS ( lifetime )? identifier ( parameter_port_list )?
( KW_EXTENDS class_type ( LPAREN list_of_arguments RPAREN )? )?
( KW_IMPLEMENTS interface_class_type ( COMMA interface_class_type )* )? SEMI
( class_item )*
KW_ENDCLASS ( COLON identifier )?;
interface_class_type: ps_identifier ( parameter_value_assignment )?;
interface_class_declaration:
KW_INTERFACE KW_CLASS identifier ( parameter_port_list )?
( KW_EXTENDS interface_class_type ( COMMA interface_class_type )* )? SEMI
( interface_class_item )*
KW_ENDCLASS ( COLON identifier )?;
interface_class_item:
type_declaration
| ( attribute_instance )* interface_class_method
| ( local_parameter_declaration | parameter_declaration ) SEMI
| SEMI;
interface_class_method:
KW_PURE KW_VIRTUAL method_prototype SEMI;
package_declaration:
( attribute_instance )* KW_PACKAGE ( lifetime )? identifier SEMI
( timeunits_declaration )? ( ( attribute_instance )* package_item )*
KW_ENDPACKAGE ( COLON identifier )?;
timeunits_declaration:
KW_TIMEUNIT TIME_LITERAL ( DIV TIME_LITERAL )? SEMI
| KW_TIMEPRECISION TIME_LITERAL SEMI
| KW_TIMEUNIT TIME_LITERAL SEMI KW_TIMEPRECISION TIME_LITERAL SEMI
| KW_TIMEPRECISION TIME_LITERAL SEMI KW_TIMEUNIT TIME_LITERAL SEMI;
parameter_port_list:
HASH LPAREN ( list_of_param_assignments | parameter_port_declaration ) ( COMMA parameter_port_declaration )* RPAREN
| HASH LPAREN RPAREN;
parameter_port_declaration:
parameter_declaration
| local_parameter_declaration
| data_type list_of_param_assignments
| KW_TYPE list_of_type_assignments;
list_of_ports: LPAREN port ( COMMA port )* RPAREN;
list_of_port_declarations:
LPAREN ( ( attribute_instance )* ansi_port_declaration ( COMMA ( attribute_instance )* ansi_port_declaration )* )? RPAREN;
port_declaration:
( attribute_instance )* ( inout_declaration | input_declaration | output_declaration | ref_declaration | interface_port_declaration )
;
port:
( port_expression )?
| DOT identifier LPAREN ( port_expression )? RPAREN;
port_expression:
port_reference
| LBRACE port_reference ( COMMA port_reference )* RBRACE;
port_reference:
identifier constant_select;
port_direction: KW_INPUT | KW_OUTPUT | KW_INOUT | KW_REF;
net_port_header: ( port_direction )? net_port_type;
variable_port_header: ( port_direction )? var_data_type;
interface_port_header:
( identifier | KW_INTERFACE ) ( DOT identifier )?
;
ansi_port_declaration:
( net_port_header | interface_port_header )? identifier ( unpacked_dimension )*
( ASSIGN constant_expression )?
| ( variable_port_header )? identifier ( variable_dimension )* ( ASSIGN constant_expression )?
| ( port_direction )? DOT identifier LPAREN ( expression )? RPAREN;
elaboration_system_task:
KW_DOLAR_FATAL ( LPAREN UNSIGNED_NUMBER ( COMMA list_of_arguments )? RPAREN )? SEMI
| ( KW_DOLAR_ERROR | KW_DOLAR_WARNING | KW_DOLAR_INFO ) ( LPAREN list_of_arguments RPAREN )? SEMI
;
module_common_item:
module_or_generate_item_declaration
| interface_instantiation
| program_instantiation
| assertion_item
| bind_directive
| continuous_assign
| net_alias
| initial_construct
| final_construct
| always_construct
| loop_generate_construct
| conditional_generate_construct
| elaboration_system_task;
module_item:
port_declaration SEMI
| non_port_module_item;
module_or_generate_item:
( attribute_instance )* ( parameter_override | gate_instantiation | udp_instantiation | module_instantiation | module_common_item )
;
module_or_generate_item_declaration:
package_or_generate_item_declaration
| genvar_declaration
| clocking_declaration
| KW_DEFAULT KW_CLOCKING identifier SEMI
| KW_DEFAULT KW_DISABLE KW_IFF expression_or_dist SEMI;
non_port_module_item:
generate_region
| module_or_generate_item
| specify_block
| ( attribute_instance )* specparam_declaration
| program_declaration
| module_declaration
| interface_declaration
| timeunits_declaration;
parameter_override: KW_DEFPARAM list_of_defparam_assignments SEMI;
bind_directive:
KW_BIND bind_target_scope ( COLON bind_target_instance_list )? bind_instantiation SEMI
| KW_BIND bind_target_instance bind_instantiation SEMI;
bind_target_scope:
identifier
;
bind_target_instance:
hierarchical_identifier constant_bit_select;
bind_target_instance_list:
bind_target_instance ( COMMA bind_target_instance )*;
bind_instantiation:
program_instantiation
| module_instantiation
| interface_instantiation
| checker_instantiation;
config_declaration:
KW_CONFIG identifier SEMI
( local_parameter_declaration SEMI )*
design_statement
( config_rule_statement )*
KW_ENDCONFIG ( COLON identifier )?;
design_statement: KW_DESIGN ( ( identifier DOT )? identifier )* SEMI;
config_rule_statement:
( KW_DEFAULT | inst_clause ) liblist_clause SEMI
| inst_clause use_clause SEMI
| cell_clause ( liblist_clause | use_clause ) SEMI
;
inst_clause: KW_INSTANCE inst_name;
inst_name: identifier ( DOT identifier )*;
cell_clause: KW_CELL ( identifier DOT )? identifier;
liblist_clause: KW_LIBLIST ( identifier )*;
use_clause: KW_USE ( identifier DOT )? identifier ( COLON KW_CONFIG )?
| KW_USE named_parameter_assignment ( COMMA named_parameter_assignment )* ( COLON KW_CONFIG )?
| KW_USE ( identifier DOT )? identifier named_parameter_assignment
( COMMA named_parameter_assignment )* ( COLON KW_CONFIG )?;
interface_or_generate_item:
( attribute_instance )* ( module_common_item | extern_tf_declaration )
;
extern_tf_declaration:
KW_EXTERN method_prototype SEMI
| KW_EXTERN KW_FORKJOIN task_prototype SEMI;
interface_item:
port_declaration SEMI
| non_port_interface_item;
non_port_interface_item:
generate_region
| interface_or_generate_item
| program_declaration
| modport_declaration
| interface_declaration
| timeunits_declaration;
program_item:
port_declaration SEMI
| non_port_program_item;
non_port_program_item:
( attribute_instance )* ( continuous_assign | module_or_generate_item_declaration | initial_construct | final_construct | concurrent_assertion_item )
| timeunits_declaration
| program_generate_item;
program_generate_item:
loop_generate_construct
| conditional_generate_construct
| generate_region
| elaboration_system_task;
checker_port_list:
checker_port_item ( COMMA checker_port_item )*;
checker_port_item:
( attribute_instance )* ( checker_port_direction )? property_formal_type identifier
( variable_dimension )* ( ASSIGN property_actual_arg )?;
checker_port_direction:
KW_INPUT | KW_OUTPUT;
checker_or_generate_item:
checker_or_generate_item_declaration
| initial_construct
| always_construct
| final_construct
| assertion_item
| continuous_assign
| checker_generate_item;
checker_or_generate_item_declaration:
( KW_RAND )? data_declaration
| function_declaration
| checker_declaration
| assertion_item_declaration
| covergroup_declaration
| genvar_declaration
| clocking_declaration
| KW_DEFAULT KW_CLOCKING identifier SEMI
| KW_DEFAULT KW_DISABLE KW_IFF expression_or_dist SEMI
| SEMI;
checker_generate_item:
loop_generate_construct
| conditional_generate_construct
| generate_region
| elaboration_system_task;
class_item:
( attribute_instance )* ( class_property | class_method | class_constraint | class_declaration | interface_class_declaration | covergroup_declaration )
| ( local_parameter_declaration | parameter_declaration ) SEMI
| SEMI;
class_property:
( property_qualifier )* data_declaration
| KW_CONST ( class_item_qualifier )* data_type identifier ( ASSIGN constant_expression )? SEMI;
class_method:
( method_qualifier )* ( task_declaration | function_declaration )
| KW_PURE KW_VIRTUAL ( class_item_qualifier )* method_prototype SEMI
| KW_EXTERN ( method_qualifier )* method_prototype SEMI
| ( method_qualifier )* class_constructor_declaration
| KW_EXTERN ( method_qualifier )* class_constructor_prototype;
class_constructor_prototype:
KW_FUNCTION KW_NEW ( LPAREN tf_port_list RPAREN )? SEMI;
class_constraint:
constraint_prototype
| constraint_declaration;
class_item_qualifier:
KW_STATIC
| KW_PROTECTED
| KW_LOCAL;
property_qualifier:
random_qualifier
| class_item_qualifier;
random_qualifier:
KW_RAND
| KW_RANDC;
method_qualifier:
( KW_PURE )? KW_VIRTUAL
| class_item_qualifier;
method_prototype:
task_prototype
| function_prototype;
class_constructor_declaration:
KW_FUNCTION ( class_scope )? KW_NEW ( LPAREN tf_port_list RPAREN )? SEMI
( block_item_declaration )*
( KW_SUPER DOT KW_NEW ( LPAREN list_of_arguments RPAREN )? SEMI )?
( function_statement_or_null )*
KW_ENDFUNCTION ( COLON KW_NEW )?;
constraint_declaration: ( KW_STATIC )? KW_CONSTRAINT identifier constraint_block;
constraint_block: LBRACE ( constraint_block_item )* RBRACE;
constraint_block_item:
KW_SOLVE solve_before_list KW_BEFORE solve_before_list SEMI
| constraint_expression;
solve_before_list: constraint_primary ( COMMA constraint_primary )*;
constraint_primary: ( implicit_class_handle DOT | class_scope )? hierarchical_identifier select;
constraint_expression:
( KW_SOFT )? expression_or_dist SEMI
| uniqueness_constraint SEMI
| expression ARROW constraint_set
| KW_IF LPAREN expression RPAREN constraint_set ( KW_ELSE constraint_set )?
| KW_FOREACH LPAREN ps_or_hierarchical_array_identifier LSQUARE_BR loop_variables RSQUARE_BR RPAREN constraint_set
| KW_DISABLE KW_SOFT constraint_primary SEMI;
uniqueness_constraint:
KW_UNIQUE LBRACE open_range_list RBRACE;
constraint_set:
constraint_expression
| LBRACE ( constraint_expression )* RBRACE;
dist_list: dist_item ( COMMA dist_item )*;
dist_item: value_range ( dist_weight )?;
dist_weight:
( DIST_WEIGHT_ASSIGN | DIST_WEIGHT_ASSIGN_DIV ) expression
;
constraint_prototype: ( constraint_prototype_qualifier )? ( KW_STATIC )? KW_CONSTRAINT identifier SEMI;
constraint_prototype_qualifier: KW_EXTERN | KW_PURE;
extern_constraint_declaration:
( KW_STATIC )? KW_CONSTRAINT class_scope identifier constraint_block;
identifier_list: identifier ( COMMA identifier )*;
package_item:
package_or_generate_item_declaration
| anonymous_program
| package_export_declaration
| timeunits_declaration;
package_or_generate_item_declaration:
net_declaration
| data_declaration
| task_declaration
| function_declaration
| checker_declaration
| dpi_import_export
| extern_constraint_declaration
| ( class_declaration | interface_class_declaration )
| class_constructor_declaration
| ( local_parameter_declaration | parameter_declaration ) SEMI
| covergroup_declaration
| assertion_item_declaration
| SEMI;
anonymous_program: KW_PROGRAM SEMI ( anonymous_program_item )* KW_ENDPROGRAM;
anonymous_program_item:
task_declaration
| function_declaration
| ( class_declaration | interface_class_declaration )
| covergroup_declaration
| class_constructor_declaration
| SEMI;
local_parameter_declaration:
KW_LOCALPARAM data_type_or_implicit list_of_param_assignments
| KW_LOCALPARAM KW_TYPE list_of_type_assignments;
parameter_declaration:
KW_PARAMETER data_type_or_implicit list_of_param_assignments
| KW_PARAMETER KW_TYPE list_of_type_assignments;
specparam_declaration:
KW_SPECPARAM ( packed_dimension )? list_of_specparam_assignments SEMI;
inout_declaration:
KW_INOUT net_port_type list_of_port_identifiers;
input_declaration:
KW_INPUT net_port_type list_of_port_identifiers
| KW_INPUT var_data_type list_of_variable_identifiers;
output_declaration:
KW_OUTPUT net_port_type list_of_port_identifiers
| KW_OUTPUT var_data_type list_of_variable_port_identifiers;
interface_port_declaration:
identifier list_of_interface_identifiers
| identifier DOT identifier list_of_interface_identifiers;
ref_declaration: KW_REF var_data_type list_of_variable_identifiers;
data_declaration:
( KW_CONST )? ( KW_VAR )? ( lifetime )? data_type_or_implicit list_of_variable_decl_assignments SEMI
| type_declaration
| package_import_declaration
| net_type_declaration;
package_import_declaration:
KW_IMPORT package_import_item ( COMMA package_import_item )* SEMI;
package_import_item:
identifier DOUBLE_COLON ( identifier | MUL )
;
package_export_declaration:
KW_EXPORT MUL DOUBLE_COLON MUL SEMI
| KW_EXPORT package_import_item ( COMMA package_import_item )* SEMI;
genvar_declaration: KW_GENVAR list_of_genvar_identifiers SEMI;
net_declaration:
net_type ( drive_strength | charge_strength )? ( KW_VECTORED | KW_SCALARED )?
data_type_or_implicit ( delay3 )? list_of_net_decl_assignments SEMI
| identifier ( delay_control )?
list_of_net_decl_assignments SEMI
| KW_INTERCONNECT implicit_data_type ( HASH delay_value )?
identifier ( unpacked_dimension )*
( COMMA identifier ( unpacked_dimension )* )? SEMI;
type_declaration:
KW_TYPEDEF data_type identifier ( variable_dimension )* SEMI
| KW_TYPEDEF identifier constant_bit_select DOT identifier identifier SEMI
| KW_TYPEDEF ( KW_ENUM | KW_STRUCT | KW_UNION | KW_CLASS | KW_INTERFACE KW_CLASS )? identifier SEMI;
net_type_declaration:
KW_NETTYPE data_type identifier
( KW_WITH ( package_scope | class_scope )? identifier )? SEMI
| KW_NETTYPE ( package_scope | class_scope )? identifier identifier SEMI;
lifetime: KW_STATIC | KW_AUTOMATIC;
casting_type: simple_type | constant_primary_no_cast_no_call | signing | KW_STRING | KW_CONST;
data_type:
integer_vector_type ( signing )? ( packed_dimension )*
| integer_atom_type ( signing )?
| non_integer_type
| struct_union ( KW_PACKED ( signing )? )? LBRACE struct_union_member ( struct_union_member )* RBRACE
( packed_dimension )*
| KW_ENUM ( enum_base_type )? LBRACE enum_name_declaration ( COMMA enum_name_declaration )* RBRACE
( packed_dimension )*
| KW_STRING
| KW_CHANDLE
| KW_VIRTUAL ( KW_INTERFACE )? identifier ( parameter_value_assignment )? ( DOT identifier )?
| ( class_scope | package_scope )? identifier ( packed_dimension )*
| class_type
| KW_EVENT
| ps_identifier
| type_reference;
data_type_or_implicit:
data_type
| implicit_data_type;
implicit_data_type: ( signing )? ( packed_dimension )*;
enum_base_type:
integer_atom_type ( signing )?
| integer_vector_type ( signing )? ( packed_dimension )?
| identifier ( packed_dimension )?;
enum_name_declaration:
identifier ( LSQUARE_BR integral_number ( COLON integral_number )? RSQUARE_BR )? ( ASSIGN constant_expression )?;
class_scope:
ps_identifier ( parameter_value_assignment )?
( DOUBLE_COLON identifier ( parameter_value_assignment )? )* DOUBLE_COLON;
class_type:
ps_identifier ( parameter_value_assignment )?
( DOUBLE_COLON identifier ( parameter_value_assignment )? )*;
integer_type: integer_vector_type | integer_atom_type;
integer_atom_type: KW_BYTE | KW_SHORTINT | KW_INT | KW_LONGINT | KW_INTEGER | KW_TIME;
integer_vector_type: KW_BIT | KW_LOGIC | KW_REG;
non_integer_type: KW_SHORTREAL | KW_REAL | KW_REALTIME;
net_type: KW_SUPPLY0 | KW_SUPPLY1 | KW_TRI | KW_TRIAND | KW_TRIOR | KW_TRIREG | KW_TRI0 | KW_TRI1 | KW_UWIRE | KW_WIRE | KW_WAND | KW_WOR;
net_port_type:
( net_type )? data_type_or_implicit
| identifier
| KW_INTERCONNECT implicit_data_type;
var_data_type: data_type | KW_VAR data_type_or_implicit;
signing: KW_SIGNED | KW_UNSIGNED;
simple_type: integer_type | non_integer_type | ps_type_identifier | ps_parameter_identifier;
struct_union_member:
( attribute_instance )* ( random_qualifier )? data_type_or_void list_of_variable_decl_assignments SEMI;
data_type_or_void: data_type | KW_VOID;
struct_union: KW_STRUCT | KW_UNION ( KW_TAGGED )?;
type_reference:
KW_TYPE LPAREN ( expression | data_type ) RPAREN
;
drive_strength:
LPAREN strength0 COMMA strength1 RPAREN
| LPAREN strength1 COMMA strength0 RPAREN
| LPAREN strength0 COMMA KW_HIGHZ1 RPAREN
| LPAREN strength1 COMMA KW_HIGHZ0 RPAREN
| LPAREN KW_HIGHZ0 COMMA strength1 RPAREN
| LPAREN KW_HIGHZ1 COMMA strength0 RPAREN;
strength0: KW_SUPPLY0 | KW_STRONG0 | KW_PULL0 | KW_WEAK0;
strength1: KW_SUPPLY1 | KW_STRONG1 | KW_PULL1 | KW_WEAK1;
charge_strength: LPAREN ( KW_SMALL | KW_MEDIUM | KW_LARGE ) RPAREN;
delay3: HASH delay_value | HASH LPAREN mintypmax_expression ( COMMA mintypmax_expression ( COMMA
mintypmax_expression )? )? RPAREN;
delay2: HASH delay_value | HASH LPAREN mintypmax_expression ( COMMA mintypmax_expression )? RPAREN;
delay_value:
UNSIGNED_NUMBER
| real_number
| ps_identifier
| TIME_LITERAL
| KW_1STEP;
list_of_defparam_assignments: defparam_assignment ( COMMA defparam_assignment )*;
list_of_genvar_identifiers: identifier ( COMMA identifier )*;
list_of_interface_identifiers: identifier ( unpacked_dimension )*
( COMMA identifier ( unpacked_dimension )* )*;
list_of_net_decl_assignments: net_decl_assignment ( COMMA net_decl_assignment )*;
list_of_param_assignments: param_assignment ( COMMA param_assignment )*;
list_of_port_identifiers: identifier ( unpacked_dimension )*
( COMMA identifier ( unpacked_dimension )* )*;
list_of_udp_port_identifiers: identifier ( COMMA identifier )*;
list_of_specparam_assignments: specparam_assignment ( COMMA specparam_assignment )*;
list_of_tf_variable_identifiers: identifier ( variable_dimension )* ( ASSIGN expression )?
( COMMA identifier ( variable_dimension )* ( ASSIGN expression )? )*;
list_of_type_assignments: type_assignment ( COMMA type_assignment )*;
list_of_variable_decl_assignments: variable_decl_assignment ( COMMA variable_decl_assignment )*;
list_of_variable_identifiers: identifier ( variable_dimension )*
( COMMA identifier ( variable_dimension )* )*;
list_of_variable_port_identifiers: identifier ( variable_dimension )* ( ASSIGN constant_expression )?
( COMMA identifier ( variable_dimension )* ( ASSIGN constant_expression )? )*;
defparam_assignment: hierarchical_identifier ASSIGN constant_mintypmax_expression;
net_decl_assignment: identifier ( unpacked_dimension )* ( ASSIGN expression )?;
param_assignment:
identifier ( unpacked_dimension )* ( ASSIGN constant_param_expression )?;
specparam_assignment:
identifier ASSIGN constant_mintypmax_expression
| pulse_control_specparam;
type_assignment:
identifier ( ASSIGN data_type )?;
pulse_control_specparam:
KW_PATHPULSEDOLAR_ ASSIGN LPAREN reject_limit_value ( COMMA error_limit_value )? RPAREN
| KW_PATHPULSEDOLAR_ specify_input_terminal_descriptor DOLAR specify_output_terminal_descriptor
ASSIGN LPAREN reject_limit_value ( COMMA error_limit_value )? RPAREN;
error_limit_value: constant_mintypmax_expression;
reject_limit_value: constant_mintypmax_expression;
variable_decl_assignment:
identifier ( variable_dimension )* ( ASSIGN expression )?
| dynamic_array_variable_identifier unsized_dimension ( variable_dimension )*
( ASSIGN dynamic_array_new )?
| identifier ASSIGN class_new;
class_new:
( class_scope )? KW_NEW ( LPAREN list_of_arguments RPAREN )?
| KW_NEW expression;
dynamic_array_new: KW_NEW LSQUARE_BR expression RSQUARE_BR ( LPAREN expression RPAREN )?;
unpacked_dimension:
LSQUARE_BR ( constant_range | constant_expression ) RSQUARE_BR
;
packed_dimension:
LSQUARE_BR constant_range RSQUARE_BR
| unsized_dimension;
associative_dimension:
LSQUARE_BR ( data_type | MUL ) RSQUARE_BR
;
variable_dimension:
unsized_dimension
| unpacked_dimension
| associative_dimension
| queue_dimension;
queue_dimension: LSQUARE_BR DOLAR ( COLON constant_expression )? RSQUARE_BR;
unsized_dimension: LSQUARE_BR RSQUARE_BR;
function_data_type_or_implicit:
data_type_or_void
| implicit_data_type;
function_declaration: KW_FUNCTION ( lifetime )? function_body_declaration;
function_body_declaration:
function_data_type_or_implicit
( identifier DOT | class_scope )? identifier SEMI
( tf_item_declaration )*
( function_statement_or_null )*
KW_ENDFUNCTION ( COLON identifier )?
| function_data_type_or_implicit
( identifier DOT | class_scope )? identifier LPAREN tf_port_list RPAREN SEMI
( block_item_declaration )*
( function_statement_or_null )*
KW_ENDFUNCTION ( COLON identifier )?;
function_prototype: KW_FUNCTION data_type_or_void identifier ( LPAREN tf_port_list RPAREN )?;
dpi_import_export:
KW_IMPORT STRING_LITERAL ( dpi_function_import_property )? ( C_IDENTIFIER ASSIGN )? function_prototype SEMI
| KW_IMPORT STRING_LITERAL ( dpi_task_import_property )? ( C_IDENTIFIER ASSIGN )? task_prototype SEMI
| KW_EXPORT STRING_LITERAL ( C_IDENTIFIER ASSIGN )? ( KW_FUNCTION | KW_TASK ) identifier SEMI
;
dpi_function_import_property: KW_CONTEXT | KW_PURE;
dpi_task_import_property: KW_CONTEXT;
task_declaration: KW_TASK ( lifetime )? task_body_declaration;
task_body_declaration:
( identifier DOT | class_scope )? identifier SEMI
( tf_item_declaration )*
( statement_or_null )*
KW_ENDTASK ( COLON identifier )?
| ( identifier DOT | class_scope )? identifier LPAREN tf_port_list RPAREN SEMI
( block_item_declaration )*
( statement_or_null )*
KW_ENDTASK ( COLON identifier )?;
tf_item_declaration:
block_item_declaration
| tf_port_declaration;
tf_port_list:
tf_port_item ( COMMA tf_port_item )*;
tf_port_item:
( attribute_instance )*
( tf_port_direction )? ( KW_VAR )? data_type_or_implicit
( identifier ( variable_dimension )* ( ASSIGN expression )? )?;
tf_port_direction: port_direction | KW_CONST KW_REF;
tf_port_declaration:
( attribute_instance )* tf_port_direction ( KW_VAR )? data_type_or_implicit list_of_tf_variable_identifiers SEMI;
task_prototype: KW_TASK identifier ( LPAREN tf_port_list RPAREN )?;
block_item_declaration:
( attribute_instance )* data_declaration
| ( attribute_instance )* ( local_parameter_declaration | parameter_declaration ) SEMI
| ( attribute_instance )* let_declaration;
modport_declaration: KW_MODPORT modport_item ( COMMA modport_item )* SEMI;
modport_item: identifier LPAREN modport_ports_declaration ( COMMA modport_ports_declaration )* RPAREN;
modport_ports_declaration:
( attribute_instance )* ( modport_simple_ports_declaration | modport_tf_ports_declaration | modport_clocking_declaration )
;
modport_clocking_declaration: KW_CLOCKING identifier;
modport_simple_ports_declaration:
port_direction modport_simple_port ( COMMA modport_simple_port )*;
modport_simple_port:
identifier
| DOT identifier LPAREN ( expression )? RPAREN;
modport_tf_ports_declaration:
import_export modport_tf_port ( COMMA modport_tf_port )*;
modport_tf_port:
method_prototype
| identifier;
import_export: KW_IMPORT | KW_EXPORT;
concurrent_assertion_item:
( identifier COLON )? concurrent_assertion_statement
| checker_instantiation;
concurrent_assertion_statement:
assert_property_statement
| assume_property_statement
| cover_property_statement
| cover_sequence_statement
| restrict_property_statement;
assert_property_statement:
KW_ASSERT KW_PROPERTY LPAREN property_spec RPAREN action_block;
assume_property_statement:
KW_ASSUME KW_PROPERTY LPAREN property_spec RPAREN action_block;
cover_property_statement:
KW_COVER KW_PROPERTY LPAREN property_spec RPAREN statement_or_null;
expect_property_statement:
KW_EXPECT LPAREN property_spec RPAREN action_block;
cover_sequence_statement:
KW_COVER KW_SEQUENCE LPAREN ( clocking_event )? ( KW_DISABLE KW_IFF LPAREN expression_or_dist RPAREN )?
sequence_expr RPAREN statement_or_null;
restrict_property_statement:
KW_RESTRICT KW_PROPERTY LPAREN property_spec RPAREN SEMI;
property_instance:
ps_or_hierarchical_identifier ( LPAREN property_list_of_arguments RPAREN )?;
property_list_of_arguments:
( property_actual_arg )? ( COMMA ( property_actual_arg )? )* ( COMMA DOT identifier LPAREN ( property_actual_arg )? RPAREN )*
| DOT identifier LPAREN ( property_actual_arg )? RPAREN ( COMMA DOT identifier LPAREN ( property_actual_arg )? RPAREN )*;
property_actual_arg:
property_expr
| sequence_actual_arg;
assertion_item_declaration:
property_declaration
| sequence_declaration
| let_declaration;
property_declaration:
KW_PROPERTY identifier ( LPAREN ( property_port_list )? RPAREN )? SEMI
( assertion_variable_declaration )*
property_spec ( SEMI )?
KW_ENDPROPERTY ( COLON identifier )?;
property_port_list:
property_port_item ( COMMA property_port_item )*;
property_port_item:
( attribute_instance )* ( KW_LOCAL ( KW_INPUT )? )? property_formal_type
identifier ( variable_dimension )* ( ASSIGN property_actual_arg )?;
property_formal_type:
sequence_formal_type
| KW_PROPERTY;
property_spec:
( clocking_event )? ( KW_DISABLE KW_IFF LPAREN expression_or_dist RPAREN )? property_expr;
property_expr:
sequence_expr
| ( KW_STRONG | KW_WEAK ) LPAREN sequence_expr RPAREN
| LPAREN property_expr RPAREN
| KW_NOT property_expr
| property_expr ( KW_OR | KW_AND ) property_expr
| sequence_expr ( OVERLAPPING_IMPL | NONOVERLAPPING_IMPL ) property_expr
| KW_IF LPAREN expression_or_dist RPAREN property_expr ( KW_ELSE property_expr )?
| KW_CASE LPAREN expression_or_dist RPAREN property_case_item ( property_case_item )* KW_ENDCASE
| sequence_expr ( HASH_MINUS_HASH | HASH_EQ_HASH ) property_expr
| KW_NEXTTIME property_expr
| KW_NEXTTIME LSQUARE_BR constant_expression RSQUARE_BR property_expr
| KW_S_NEXTTIME property_expr
| KW_S_NEXTTIME LSQUARE_BR constant_expression RSQUARE_BR property_expr
| KW_ALWAYS property_expr
| KW_ALWAYS LSQUARE_BR cycle_delay_const_range_expression RSQUARE_BR property_expr
| KW_S_ALWAYS LSQUARE_BR constant_range RSQUARE_BR property_expr
| KW_S_EVENTUALLY property_expr
| KW_EVENTUALLY LSQUARE_BR constant_range RSQUARE_BR property_expr
| KW_S_EVENTUALLY LSQUARE_BR cycle_delay_const_range_expression RSQUARE_BR property_expr
| property_expr ( KW_UNTIL | KW_S_UNTIL | KW_UNTIL_WITH | KW_S_UNTIL_WITH | KW_IMPLIES | KW_IFF ) property_expr
| ( KW_ACCEPT_ON | KW_REJECT_ON | KW_SYNC_ACCEPT_ON | KW_SYNC_REJECT_ON ) LPAREN expression_or_dist RPAREN property_expr
| property_instance
| clocking_event property_expr;
property_case_item:
expression_or_dist ( COMMA expression_or_dist )* COLON property_expr SEMI
| KW_DEFAULT ( COLON )? property_expr SEMI;
sequence_declaration:
KW_SEQUENCE identifier ( LPAREN ( sequence_port_list )? RPAREN )? SEMI
( assertion_variable_declaration )*
sequence_expr ( SEMI )?
KW_ENDSEQUENCE ( COLON identifier )?;
sequence_port_list:
sequence_port_item ( COMMA sequence_port_item )*;
sequence_port_item:
( attribute_instance )* ( KW_LOCAL ( sequence_lvar_port_direction )? )? sequence_formal_type
identifier ( variable_dimension )* ( ASSIGN sequence_actual_arg )?;
sequence_lvar_port_direction: KW_INPUT | KW_INOUT | KW_OUTPUT;
sequence_formal_type:
data_type_or_implicit
| KW_SEQUENCE
| KW_UNTYPED;
sequence_expr:
cycle_delay_range sequence_expr ( cycle_delay_range sequence_expr )*
| sequence_expr cycle_delay_range sequence_expr ( cycle_delay_range sequence_expr )*
| expression_or_dist ( boolean_abbrev )?
| sequence_instance ( sequence_abbrev )?
| LPAREN sequence_expr ( COMMA sequence_match_item )* RPAREN ( sequence_abbrev )?
| sequence_expr ( KW_AND | KW_INTERSECT | KW_OR ) sequence_expr
| KW_FIRST_MATCH LPAREN sequence_expr ( COMMA sequence_match_item )* RPAREN
| expression_or_dist KW_THROUGHOUT sequence_expr
| sequence_expr KW_WITHIN sequence_expr
| clocking_event sequence_expr;
cycle_delay_range:
DOUBLE_HASH constant_primary
| DOUBLE_HASH LSQUARE_BR ( cycle_delay_const_range_expression | MUL | PLUS ) RSQUARE_BR
;
sequence_method_call:
sequence_instance DOT identifier;
sequence_match_item:
operator_assignment
| inc_or_dec_expression
| subroutine_call;
sequence_instance:
ps_or_hierarchical_identifier ( LPAREN sequence_list_of_arguments RPAREN )?;
sequence_list_of_arguments:
( sequence_actual_arg )? ( COMMA ( sequence_actual_arg )? )* ( COMMA DOT identifier LPAREN ( sequence_actual_arg )? RPAREN )*
| DOT identifier LPAREN ( sequence_actual_arg )? RPAREN ( COMMA DOT identifier LPAREN ( sequence_actual_arg )? RPAREN )*;
sequence_actual_arg:
event_expression
| sequence_expr;
boolean_abbrev:
consecutive_repetition
| non_consecutive_repetition
| goto_repetition;
sequence_abbrev: consecutive_repetition;
consecutive_repetition:
LSQUARE_BR MUL const_or_range_expression RSQUARE_BR
| LSQUARE_BR ( MUL | PLUS ) RSQUARE_BR
;
non_consecutive_repetition: LSQUARE_BR ASSIGN const_or_range_expression RSQUARE_BR;
goto_repetition: LSQUARE_BR ARROW const_or_range_expression RSQUARE_BR;
const_or_range_expression:
constant_expression
| cycle_delay_const_range_expression;
cycle_delay_const_range_expression:
constant_expression COLON ( constant_expression | DOLAR )
;
expression_or_dist: expression ( KW_DIST LBRACE dist_list RBRACE )?;
assertion_variable_declaration:
var_data_type list_of_variable_decl_assignments SEMI;
covergroup_declaration:
KW_COVERGROUP identifier ( LPAREN tf_port_list RPAREN )? ( coverage_event )? SEMI
( coverage_spec_or_option )*
KW_ENDGROUP ( COLON identifier )?;
coverage_spec_or_option:
( attribute_instance )* coverage_spec
| ( attribute_instance )* coverage_option SEMI;
coverage_option:
KW_OPTION DOT identifier ASSIGN expression
| KW_TYPE_OPTION DOT identifier ASSIGN constant_expression;
coverage_spec:
cover_point
| cover_cross;
coverage_event:
clocking_event
| KW_WITH KW_FUNCTION KW_SAMPLE LPAREN tf_port_list RPAREN
| DOUBLE_AT LPAREN block_event_expression RPAREN;
block_event_expression:
block_event_expression_item ( KW_OR block_event_expression )*
;
block_event_expression_item: ( KW_BEGIN | KW_END ) hierarchical_btf_identifier
;
hierarchical_btf_identifier:
hierarchical_identifier
| ( hierarchical_identifier DOT | class_scope )? identifier;
cover_point:
( data_type_or_implicit identifier COLON )? KW_COVERPOINT expression ( KW_IFF LPAREN expression RPAREN )?
bins_or_empty;
bins_or_empty:
LBRACE ( attribute_instance )* ( bins_or_options SEMI )* RBRACE
| SEMI;
bins_or_options:
coverage_option
| ( KW_WILDCARD )? bins_keyword identifier ( LSQUARE_BR ( covergroup_expression )? RSQUARE_BR )? ASSIGN
LBRACE covergroup_range_list RBRACE ( KW_WITH LPAREN with_covergroup_expression RPAREN )?
( KW_IFF LPAREN expression RPAREN )?
| ( KW_WILDCARD )? bins_keyword identifier ( LSQUARE_BR ( covergroup_expression )? RSQUARE_BR )? ASSIGN
identifier KW_WITH LPAREN with_covergroup_expression RPAREN ( KW_IFF LPAREN expression RPAREN )?
| ( KW_WILDCARD )? bins_keyword identifier ( LSQUARE_BR ( covergroup_expression )? RSQUARE_BR )? ASSIGN
set_covergroup_expression ( KW_IFF LPAREN expression RPAREN )?
| ( KW_WILDCARD )? bins_keyword identifier ( LSQUARE_BR RSQUARE_BR )? ASSIGN trans_list ( KW_IFF LPAREN expression RPAREN )?
| bins_keyword identifier ( LSQUARE_BR ( covergroup_expression )? RSQUARE_BR )? ASSIGN KW_DEFAULT ( KW_IFF LPAREN expression RPAREN )?
| bins_keyword identifier ASSIGN KW_DEFAULT KW_SEQUENCE ( KW_IFF LPAREN expression RPAREN )?;
bins_keyword: KW_BINS | KW_ILLEGAL_BINS | KW_IGNORE_BINS;
trans_list: LPAREN trans_set RPAREN ( COMMA LPAREN trans_set RPAREN )*;
trans_set: trans_range_list ( IMPLIES trans_range_list )*;
trans_range_list:
covergroup_range_list
( LSQUARE_BR ( MUL | ARROW | ASSIGN ) repeat_range RSQUARE_BR
)?;
repeat_range:
covergroup_expression
( COLON covergroup_expression )?;
cover_cross:
( identifier COLON )? KW_CROSS list_of_cross_items ( KW_IFF LPAREN expression RPAREN )? cross_body;
list_of_cross_items: cross_item COMMA cross_item ( COMMA cross_item )*;
cross_item:
identifier
;
cross_body:
LBRACE ( cross_body_item )* RBRACE
| SEMI;
cross_body_item:
function_declaration
| bins_selection_or_option SEMI;
bins_selection_or_option:
( attribute_instance )* ( coverage_option | bins_selection )
;
bins_selection: bins_keyword identifier ASSIGN select_expression ( KW_IFF LPAREN expression RPAREN )?;
select_expression:
select_condition
| NOT select_condition
| select_expression ( LOG_AND | LOG_OR ) select_expression
| LPAREN select_expression RPAREN
| select_expression KW_WITH LPAREN with_covergroup_expression RPAREN ( KW_MATCHES integer_covergroup_expression )?
| identifier
| cross_set_expression ( KW_MATCHES integer_covergroup_expression )?;
select_condition: KW_BINSOF LPAREN bins_expression RPAREN ( KW_INTERSECT LBRACE covergroup_range_list RBRACE )?;
bins_expression:
identifier
( DOT identifier )?;
covergroup_range_list: covergroup_value_range ( COMMA covergroup_value_range )*;
covergroup_value_range:
covergroup_expression
| LSQUARE_BR covergroup_expression COLON covergroup_expression RSQUARE_BR;
with_covergroup_expression: covergroup_expression;
set_covergroup_expression: covergroup_expression;
integer_covergroup_expression: covergroup_expression;
cross_set_expression: covergroup_expression;
covergroup_expression: expression;
let_declaration:
KW_LET let_identifier ( LPAREN ( let_port_list )? RPAREN )? ASSIGN expression SEMI;
let_identifier:
identifier;
let_port_list:
let_port_item ( COMMA let_port_item )*;
let_port_item:
( attribute_instance )* let_formal_type identifier ( variable_dimension )* ( ASSIGN expression )?;
let_formal_type:
data_type_or_implicit
| KW_UNTYPED;
let_expression:
( package_scope )? let_identifier ( LPAREN let_list_of_arguments RPAREN )?;
let_list_of_arguments:
( let_actual_arg )? ( COMMA ( let_actual_arg )? )* ( COMMA DOT identifier LPAREN ( let_actual_arg )? RPAREN )*
| DOT identifier LPAREN ( let_actual_arg )? RPAREN ( COMMA DOT identifier LPAREN ( let_actual_arg )? RPAREN )*;
let_actual_arg:
expression;
gate_instantiation:
cmos_switchtype ( delay3 )? cmos_switch_instance ( COMMA cmos_switch_instance )* SEMI
| enable_gatetype ( drive_strength )? ( delay3 )? enable_gate_instance ( COMMA enable_gate_instance )* SEMI
| mos_switchtype ( delay3 )? mos_switch_instance ( COMMA mos_switch_instance )* SEMI
| n_input_gatetype ( drive_strength )? ( delay2 )? n_input_gate_instance ( COMMA n_input_gate_instance )* SEMI
| n_output_gatetype ( drive_strength )? ( delay2 )? n_output_gate_instance
( COMMA n_output_gate_instance )* SEMI
| pass_en_switchtype ( delay2 )? pass_enable_switch_instance ( COMMA pass_enable_switch_instance )* SEMI
| pass_switchtype pass_switch_instance ( COMMA pass_switch_instance )* SEMI
| KW_PULLDOWN ( pulldown_strength )? pull_gate_instance ( COMMA pull_gate_instance )* SEMI
| KW_PULLUP ( pullup_strength )? pull_gate_instance ( COMMA pull_gate_instance )* SEMI;
cmos_switch_instance: ( name_of_instance )? LPAREN output_terminal COMMA input_terminal COMMA
ncontrol_terminal COMMA pcontrol_terminal RPAREN;
enable_gate_instance: ( name_of_instance )? LPAREN output_terminal COMMA input_terminal COMMA enable_terminal RPAREN;
mos_switch_instance: ( name_of_instance )? LPAREN output_terminal COMMA input_terminal COMMA enable_terminal RPAREN;
n_input_gate_instance: ( name_of_instance )? LPAREN output_terminal COMMA input_terminal ( COMMA input_terminal )* RPAREN;
n_output_gate_instance: ( name_of_instance )? LPAREN output_terminal ( COMMA output_terminal )* COMMA
input_terminal RPAREN;
pass_switch_instance: ( name_of_instance )? LPAREN inout_terminal COMMA inout_terminal RPAREN;
pass_enable_switch_instance: ( name_of_instance )? LPAREN inout_terminal COMMA inout_terminal COMMA
enable_terminal RPAREN;
pull_gate_instance: ( name_of_instance )? LPAREN output_terminal RPAREN;
pulldown_strength:
LPAREN strength0 COMMA strength1 RPAREN
| LPAREN strength1 COMMA strength0 RPAREN
| LPAREN strength0 RPAREN;
pullup_strength:
LPAREN strength0 COMMA strength1 RPAREN
| LPAREN strength1 COMMA strength0 RPAREN
| LPAREN strength1 RPAREN;
enable_terminal: expression;
inout_terminal: net_lvalue;
input_terminal: expression;
ncontrol_terminal: expression;
output_terminal: net_lvalue;
pcontrol_terminal: expression;
cmos_switchtype: KW_CMOS | KW_RCMOS;
enable_gatetype: KW_BUFIF0 | KW_BUFIF1 | KW_NOTIF0 | KW_NOTIF1;
mos_switchtype: KW_NMOS | KW_PMOS | KW_RNMOS | KW_RPMOS;
n_input_gatetype: KW_AND | KW_NAND | KW_OR | KW_NOR | KW_XOR | KW_XNOR;
n_output_gatetype: KW_BUF | KW_NOT;
pass_en_switchtype: KW_TRANIF0 | KW_TRANIF1 | KW_RTRANIF1 | KW_RTRANIF0;
pass_switchtype: KW_TRAN | KW_RTRAN;
module_instantiation:
identifier ( parameter_value_assignment )? hierarchical_instance ( COMMA hierarchical_instance )* SEMI;
parameter_value_assignment: HASH LPAREN ( list_of_parameter_assignments )? RPAREN;
list_of_parameter_assignments:
param_expression ( COMMA param_expression )*
| named_parameter_assignment ( COMMA named_parameter_assignment )*;
named_parameter_assignment: DOT identifier LPAREN ( param_expression )? RPAREN;
hierarchical_instance: name_of_instance LPAREN list_of_port_connections RPAREN;
name_of_instance: identifier ( unpacked_dimension )*;
list_of_port_connections:
ordered_port_connection ( COMMA ordered_port_connection )*
| named_port_connection ( COMMA named_port_connection )*;
ordered_port_connection: ( attribute_instance )* ( expression )?;
named_port_connection:
( attribute_instance )* DOT identifier ( LPAREN ( expression )? RPAREN )?
| ( attribute_instance )* DOT MUL;
interface_instantiation:
identifier ( parameter_value_assignment )? hierarchical_instance ( COMMA hierarchical_instance )* SEMI;
program_instantiation:
identifier ( parameter_value_assignment )? hierarchical_instance ( COMMA hierarchical_instance )* SEMI;
checker_instantiation:
ps_identifier name_of_instance LPAREN list_of_checker_port_connections RPAREN SEMI;
list_of_checker_port_connections:
ordered_checker_port_connection ( COMMA ordered_checker_port_connection )*
| named_checker_port_connection ( COMMA named_checker_port_connection )*;
ordered_checker_port_connection: ( attribute_instance )* ( property_actual_arg )?;
named_checker_port_connection:
( attribute_instance )* DOT identifier ( LPAREN ( property_actual_arg )? RPAREN )?
| ( attribute_instance )* DOT MUL;
generate_region:
KW_GENERATE ( generate_item )* KW_ENDGENERATE;
loop_generate_construct:
KW_FOR LPAREN genvar_initialization SEMI genvar_expression SEMI genvar_iteration RPAREN
generate_block;
genvar_initialization:
( KW_GENVAR )? identifier ASSIGN constant_expression;
genvar_iteration:
identifier assignment_operator genvar_expression
| inc_or_dec_operator identifier
| identifier inc_or_dec_operator;
conditional_generate_construct:
if_generate_construct
| case_generate_construct;
if_generate_construct:
KW_IF LPAREN constant_expression RPAREN generate_block ( KW_ELSE generate_block )?;
case_generate_construct:
KW_CASE LPAREN constant_expression RPAREN case_generate_item ( case_generate_item )* KW_ENDCASE;
case_generate_item:
constant_expression ( COMMA constant_expression )* COLON generate_block
| KW_DEFAULT ( COLON )? generate_block;
generate_block:
generate_item
| ( identifier COLON )? KW_BEGIN ( COLON identifier )?
( generate_item )*
KW_END ( COLON identifier )?;
generate_item:
module_or_generate_item
| interface_or_generate_item
| checker_or_generate_item;
udp_nonansi_declaration:
( attribute_instance )* KW_PRIMITIVE identifier LPAREN udp_port_list RPAREN SEMI;
udp_ansi_declaration:
( attribute_instance )* KW_PRIMITIVE identifier LPAREN udp_declaration_port_list RPAREN SEMI;
udp_declaration:
udp_nonansi_declaration udp_port_declaration ( udp_port_declaration )*
udp_body
KW_ENDPRIMITIVE ( COLON identifier )?
| udp_ansi_declaration
udp_body
KW_ENDPRIMITIVE ( COLON identifier )?
| KW_EXTERN ( udp_nonansi_declaration | udp_ansi_declaration )
| ( attribute_instance )* KW_PRIMITIVE identifier LPAREN DOT MUL RPAREN SEMI
( udp_port_declaration )*
udp_body
KW_ENDPRIMITIVE ( COLON identifier )?;
udp_port_list: identifier COMMA identifier ( COMMA identifier )*;
udp_declaration_port_list: udp_output_declaration COMMA udp_input_declaration ( COMMA udp_input_declaration )*;
udp_port_declaration:
( udp_output_declaration | udp_input_declaration | udp_reg_declaration ) SEMI
;
udp_output_declaration:
( attribute_instance )* KW_OUTPUT identifier
| ( attribute_instance )* KW_OUTPUT KW_REG identifier ( ASSIGN constant_expression )?;
udp_input_declaration: ( attribute_instance )* KW_INPUT list_of_udp_port_identifiers;
udp_reg_declaration: ( attribute_instance )* KW_REG identifier;
udp_body: combinational_body | sequential_body;
combinational_body: KW_TABLE combinational_entry ( combinational_entry )* KW_ENDTABLE;
combinational_entry: level_input_list COLON LEVEL_SYMBOL SEMI;
sequential_body: ( udp_initial_statement )? KW_TABLE sequential_entry ( sequential_entry )* KW_ENDTABLE;
udp_initial_statement: KW_INITIAL identifier ASSIGN integral_number SEMI;
sequential_entry: seq_input_list COLON current_state COLON next_state SEMI;
seq_input_list: level_input_list | edge_input_list;
level_input_list: LEVEL_SYMBOL ( LEVEL_SYMBOL )*;
edge_input_list: ( LEVEL_SYMBOL )* edge_indicator ( LEVEL_SYMBOL )*;
edge_indicator: LPAREN LEVEL_SYMBOL LEVEL_SYMBOL RPAREN | EDGE_SYMBOL;
current_state: LEVEL_SYMBOL;
next_state: LEVEL_SYMBOL | MINUS;