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rules_vhdl2000.lmr
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#-----------------------------------------------------
# IEEE Standard VHDL
# Language REFERENCE Manual
# Appendix A
# http://edg.uchicago.edu/~tang/VHDLref.pdf
#
# IEEE Std 1076, 2000 Edition
# (Incorporates IEEE Std 1076-1993
# AND IEEE Std 1076a-2000)
#-----------------------------------------------------
#----------------------------------------------------
# Page:1
#----------------------------------------------------
abstract_literal
: REAL_LITERAL
| BASE_LITERAL
;
access_type_definition
: ACCESS subtype_indication
;
actual_designator
: expression
| signal__name
| variable__name
| file__name
| OPEN
;
actual_parameter_part
: parameter__association_list
;
actual_part
: actual_designator
| function__name LPAREN actual_designator RPAREN
| type_mark LPAREN actual_designator RPAREN
;
adding_operator
: PLUS
| MINUS
| AMPERSAND
;
aggregate
: LPAREN element_association { COMMA element_association } RPAREN
;
alias_declaration
: ALIAS alias_designator [ COLON subtype_indication ] IS name [ signature ] SEMI
;
alias_designator
: identifier
| CHARACTER_LITERAL
| operator_symbol
;
allocator
: NEW subtype_indication
| NEW qualified_expression
;
architecture_body
: ARCHITECTURE identifier OF entity__name IS architecture_declarative_part BEGIN architecture_statement_part END [ ARCHITECTURE ] [ architecture__simple_name ] SEMI
;
architecture_declarative_part
: { block_declarative_item }
;
#----------------------------------------------------
# Page:2
#----------------------------------------------------
architecture_statement_part
: { concurrent_statement }
;
array_type_definition
: unconstrained_array_definition
| constrained_array_definition
;
assertion
: ASSERT condition [ REPORT expression ] [ SEVERITY expression ]
;
assertion_statement
: [ LABEL COLON ] assertion SEMI
;
association_element
: [ formal_part ARROW ] actual_part
;
association_list
: association_element { COMMA association_element }
;
attribute_declaration
: ATTRIBUTE identifier COLON type_mark SEMI
;
attribute_designator
: attribute__simple_name
;
attribute_name
: prefix [ signature ] APOSTROPHE attribute_designator [ LPAREN expression RPAREN ]
;
attribute_specification
: ATTRIBUTE attribute_designator OF entity_specification IS expression SEMI
;
#base
# : integer
# ;
#base_specifier
# : B
# | O
# | X
# ;
base_unit_declaration
: identifier SEMI
;
#BASED_INTEGER
# : EXTENDED_DIGIT { [ underline ] EXTENDED_DIGIT }
# ;
#BASE_LITERAL
# : base # based_integer [ DOT based_integer ] # [ EXPONENT ]
# ;
#basic_character
# : basic_graphic_character
# | format_effector
# ;
#basic_graphic_character
# : upper_case_letter
# | digit
# | special_character
# | space_character
# ;
#BASIC_IDENTIFIER
# : letter { [ underline ] letter_or_digit }
# ;
binding_indication
: [ USE entity_aspect ] [ generic_map_aspect ] [ port_map_aspect ]
;
#----------------------------------------------------
# Page:3
#----------------------------------------------------
bit_string_literal
: BIT_STRING_LITERAL_BINARY
| BIT_STRING_LITERAL_OCTAL
| BIT_STRING_LITERAL_HEX
;
#bit_string_literal
# : base_specifier DBLQUOTE [ bit_value ] DBLQUOTE
# ;
#bit_value
# : EXTENDED_DIGIT { [ underline ] EXTENDED_DIGIT }
# ;
block_configuration
: FOR block_specification { use_clause } { configuration_item } END FOR SEMI
;
block_declarative_item
: subprogram_declaration
| subprogram_body
| type_declaration
| subtype_declaration
| constant_declaration
| signal_declaration
| shared__variable_declaration
| file_declaration
| alias_declaration
| component_declaration
| attribute_declaration
| attribute_specification
| configuration_specification
| disconnection_specification
| use_clause
| group_template_declaration
| group_declaration
;
block_declarative_part
: { block_declarative_item }
;
block_header
: [ generic_clause [ generic_map_aspect SEMI ] ] [ port_clause [ port_map_aspect SEMI ] ]
;
block_specification
: architecture__name
| block_statement__label
| generate_statement__label [ LPAREN index_specification RPAREN ]
;
block_statement
: block__label COLON BLOCK [ LPAREN guard__expression RPAREN ] [ IS ] block_header block_declarative_part BEGIN block_statement_part END BLOCK [ block__label ] SEMI
;
block_statement_part
: { concurrent_statement }
;
#----------------------------------------------------
# Page:4
#----------------------------------------------------
case_statement
: [ case__label COLON ] CASE expression IS case_statement_alternative { case_statement_alternative } END CASE [ case__label ] SEMI
;
case_statement_alternative
: WHEN choices ARROW sequence_of_statements
;
#CHARACTER_LITERAL
# : APOSTROPHE graphic_character APOSTROPHE
# ;
choice
: simple_expression
| discrete_range
| element__simple_name
| OTHERS
;
choices
: choice { | choice }
;
component_configuration
: FOR component_specification [ binding_indication SEMI ] [ block_configuration ] END FOR SEMI
;
component_declaration
: COMPONENT identifier [ IS ] [ local__generic_clause ] [ local__port_clause ] END COMPONENT [ component__simple_name ] SEMI
;
component_instantiation_statement
: instantiation__label COLON instantiated_unit [ generic_map_aspect ] [ port_map_aspect ] SEMI
;
component_specification
: instantiation_list COLON component__name
;
composite_type_definition
: array_type_definition
| record_type_definition
;
concurrent_assertion_statement
: [ LABEL COLON ] [ POSTPONED ] assertion SEMI
;
concurrent_procedure_call_statement
: [ LABEL COLON ] [ POSTPONED ] procedure_call SEMI
;
#----------------------------------------------------
# Page:5
#----------------------------------------------------
concurrent_signal_assignment_statement
: [ LABEL COLON ] [ POSTPONED ] conditional_signal_assignment
| [ LABEL COLON ] [ POSTPONED ] selected_signal_assignment
;
concurrent_statement
: block_statement
| process_statement
| concurrent_procedure_call_statement
| concurrent_assertion_statement
| concurrent_signal_assignment_statement
| component_instantiation_statement
| generate_statement
;
condition
: boolean__expression
;
condition_clause
: UNTIL condition
;
conditional_signal_assignment
: target LE options conditional_waveforms SEMI
;
conditional_waveforms
: { waveform WHEN condition ELSE } waveform [ WHEN condition ]
;
configuration_declaration
: CONFIGURATION identifier OF entity__name IS configuration_declarative_part block_configuration END [ CONFIGURATION ] [ configuration__simple_name ] SEMI
;
configuration_declarative_item
: use_clause
| attribute_specification
| group_declaration
;
configuration_declarative_part
: { configuration_declarative_item }
;
configuration_item
: block_configuration
| component_configuration
;
configuration_specification
: FOR component_specification binding_indication SEMI
;
constant_declaration
: CONSTANT identifier_list COLON subtype_indication [ VARASGN expression ] SEMI
;
constrained_array_definition
: ARRAY index_constraint OF element__subtype_indication
;
constraint
: range_constraint
| index_constraint
;
#----------------------------------------------------
# Page:6
#----------------------------------------------------
context_clause
: { context_item }
;
context_item
: library_clause
| use_clause
;
##RENAMED to REAL_LITERAL
#decimal_literal
# : integer [ DOT integer ] [ EXPONENT ]
# ;
#declaration
# : type_declaration
# | subtype_declaration
# | object_declaration
# | interface_declaration
# | alias_declaration
# | attribute_declaration
# | component_declaration
# | group_template_declaration
# | group_declaration
# | entity_declaration
# | configuration_declaration
# | subprogram_declaration
# | package_declaration
# ;
delay_mechanism
: TRANSPORT
| [ REJECT time__expression ] INERTIAL
;
design_file
: design_unit { design_unit }
;
design_unit
: context_clause library_unit
;
designator
: identifier
| operator_symbol
;
direction
: TO
| DOWNTO
;
disconnection_specification
: DISCONNECT guarded_signal_specification AFTER time__expression SEMI
;
discrete_range
: discrete__subtype_indication
| RANGE
;
element_association
: [ choices ARROW ] expression
;
element_declaration
: identifier_list COLON element_subtype_definition SEMI
;
element_subtype_definition
: subtype_indication
;
entity_aspect
: ENTITY entity__name [ LPAREN architecture__identifier RPAREN ]
| CONFIGURATION configuration__name
| OPEN
;
#----------------------------------------------------
# Page:7
#----------------------------------------------------
entity_class
: ENTITY
| ARCHITECTURE
| CONFIGURATION
| PROCEDURE
| FUNCTION
| PACKAGE
| TYPE
| SUBTYPE
| CONSTANT
| SIGNAL
| VARIABLE
| COMPONENT
| LABEL
| literal
| UNITS
;
entity_class_entry
: entity_class [ BOX ]
;
entity_class_entry_list
: entity_class_entry { COMMA entity_class_entry }
;
entity_declaration
: ENTITY identifier IS entity_header entity_declarative_part [ BEGIN entity_statement_part ] END [ ENTITY ] [ entity__simple_name ] SEMI
;
entity_declarative_item
: subprogram_declaration
| subprogram_body
| type_declaration
| subtype_declaration
| constant_declaration
| signal_declaration
| shared__variable_declaration
| file_declaration
| alias_declaration
| attribute_declaration
| attribute_specification
| disconnection_specification
| use_clause
| group_template_declaration
| group_declaration
;
entity_declarative_part
: { entity_declarative_item }
;
entity_designator
: entity_tag [ signature ]
;
entity_header
: [ formal__generic_clause ] [ formal__port_clause ]
;
entity_name_list
: entity_designator { COMMA entity_designator }
| OTHERS
| ALL
;
entity_specification
: entity_name_list COLON entity_class
;
#----------------------------------------------------
# Page:8
#----------------------------------------------------
entity_statement
: concurrent_assertion_statement
| passive__concurrent_procedure_call_statement
| passive__process_statement
;
entity_statement_part
: { entity_statement }
;
entity_tag
: simple_name
| CHARACTER_LITERAL
| operator_symbol
;
enumeration_literal
: identifier
| CHARACTER_LITERAL
;
enumeration_type_definition
: LPAREN enumeration_literal { COMMA enumeration_literal } RPAREN
;
exit_statement
: [ LABEL COLON ] EXIT [ loop__label ] [ WHEN condition ] SEMI
;
#EXPONENT
# : E [ PLUS ] integer
# | E MINUS integer
# ;
expression
: relation { AND relation }
| relation { OR relation }
| relation { XOR relation }
| relation [ NAND relation ]
| relation [ NOR relation ]
| relation { XNOR relation }
;
#EXTENDED_DIGIT
# : digit
# | letter
# ;
#EXTENDED_IDENTIFIER
# : BACKSLASH graphic_character { graphic_character } BACKSLASH
# ;
factor
: primary [ DOUBLESTAR primary ]
| ABS primary
| NOT primary
;
file_declaration
: FILE identifier_list COLON subtype_indication [ file_open_information ] SEMI
;
file_logical_name
: string__expression
;
file_open_information
: [ OPEN file_open_kind__expression ] IS file_logical_name
;
file_type_definition
: FILE OF type_mark
;
floating_type_definition
: range_constraint
;
formal_designator
: generic__name
| port__name
| parameter__name
;
#----------------------------------------------------
# Page:9
#----------------------------------------------------
formal_parameter_list
: parameter__interface_list
;
formal_part
: formal_designator
| function__name LPAREN formal_designator RPAREN
| type_mark LPAREN formal_designator RPAREN
;
full_type_declaration
: TYPE identifier IS type_definition SEMI
;
function_call
: function__name [ LPAREN actual_parameter_part RPAREN ]
;
generate_statement
: generate__label COLON generation_scheme GENERATE [ { block_declarative_item } BEGIN ] { concurrent_statement } END GENERATE [ generate__label ] SEMI
;
generation_scheme
: FOR generate__parameter_specification
| IF condition
;
generic_clause
: GENERIC LPAREN generic_list RPAREN SEMI
;
generic_list
: generic__interface_list
;
generic_map_aspect
: GENERIC MAP LPAREN generic__association_list RPAREN
;
#graphic_character
# : basic_graphic_character
# | lower_case_letter
# | other_special_character
# ;
group_constituent
: name
| CHARACTER_LITERAL
;
group_constituent_list
: group_constituent { COMMA group_constituent }
;
group_declaration
: GROUP identifier COLON group_template__name LPAREN group_constituent_list RPAREN SEMI
;
group_template_declaration
: GROUP identifier IS LPAREN entity_class_entry_list RPAREN SEMI
;
guarded_signal_specification
: guarded__signal_list COLON type_mark
;
identifier
: BASIC_IDENTIFIER
| EXTENDED_IDENTIFIER
;
identifier_list
: identifier { COMMA identifier }
;
#----------------------------------------------------
# Page:10
#----------------------------------------------------
if_statement
: [ if__label COLON ] IF condition THEN sequence_of_statements { ELSIF condition THEN sequence_of_statements } [ ELSE sequence_of_statements ] END IF [ if__label ] SEMI
;
incomplete_type_declaration
: TYPE identifier SEMI
;
index_constraint
: LPAREN discrete_range { COMMA discrete_range } RPAREN
;
index_specification
: discrete_range
| static__expression
;
index_subtype_definition
: type_mark RANGE BOX
;
indexed_name
: prefix LPAREN expression { COMMA expression } RPAREN
;
instantiated_unit
: [ COMPONENT ] component__name
| ENTITY entity__name [ LPAREN architecture__identifier RPAREN ]
| CONFIGURATION configuration__name
;
instantiation_list
: instantiation__label { COMMA instantiation__label }
| OTHERS
| ALL
;
#integer
# : digit { [ underline ] digit }
# ;
integer_type_definition
: range_constraint
;
interface_constant_declaration
: CONSTANT identifier_list COLON [ IN ] subtype_indication [ VARASGN static__expression ]
;
interface_declaration
: interface_constant_declaration
| interface_signal_declaration
| interface_variable_declaration
| interface_file_declaration
;
interface_element
: interface_declaration
;
interface_file_declaration
: FILE identifier_list COLON subtype_indication
;
interface_list
: interface_element { SEMI interface_element }
;
#----------------------------------------------------
# Page:11
#----------------------------------------------------
interface_signal_declaration
: [ SIGNAL ] identifier_list COLON [ mode ] subtype_indication [ BUS ] [ VARASGN static__expression ]
;
interface_variable_declaration
: [ VARIABLE ] identifier_list COLON [ mode ] subtype_indication [ VARASGN static__expression ]
;
iteration_scheme
: WHILE condition
| FOR loop__parameter_specification
;
label
: identifier
;
#letter
# : upper_case_letter
# | lower_case_letter
# ;
#letter_or_digit
# : letter
# | digit
# ;
library_clause
: LIBRARY logical_name_list SEMI
;
library_unit
: primary_unit
| secondary_unit
;
literal
: numeric_literal
| enumeration_literal
| STRING_LITERAL
| bit_string_literal
| NULL
;
logical_name
: identifier
;
logical_name_list
: logical_name { COMMA logical_name }
;
#logical_operator
# : AND
# | OR
# | NAND
# | NOR
# | XOR
# | XNOR
# ;
loop_statement
: [ loop__label COLON ] [ iteration_scheme ] LOOP sequence_of_statements END LOOP [ loop__label ] SEMI
;
#miscellaneous_operator
# : DOUBLESTAR
# | ABS
# | NOT
# ;
mode
: IN
| OUT
| INOUT
| BUFFER
| LINKAGE
;
multiplying_operator
: MUL
| DIV
| MOD
| REM
;
name
: simple_name
| operator_symbol
| selected_name
| indexed_name
| slice_name
| attribute_name
;
#----------------------------------------------------
# Page:12
#----------------------------------------------------
next_statement
: [ LABEL COLON ] NEXT [ loop__label ] [ WHEN condition ] SEMI
;
null_statement
: [ LABEL COLON ] NULL SEMI
;
numeric_literal
: abstract_literal
| physical_literal
;
#object_declaration
# : constant_declaration
# | signal_declaration
# | variable_declaration
# | file_declaration
# ;
operator_symbol
: STRING_LITERAL
;
options
: [ GUARDED ] [ delay_mechanism ]
;
package_body
: PACKAGE BODY package__simple_name IS package_body_declarative_part END [ PACKAGE BODY ] [ package__simple_name ] SEMI
;
package_body_declarative_item
: subprogram_declaration
| subprogram_body
| type_declaration
| subtype_declaration
| constant_declaration
| shared__variable_declaration
| file_declaration
| alias_declaration
| use_clause
| group_template_declaration
| group_declaration
;
package_body_declarative_part
: { package_body_declarative_item }
;
package_declaration
: PACKAGE identifier IS package_declarative_part END [ PACKAGE ] [ package__simple_name ] SEMI
;
#----------------------------------------------------
# Page:13
#----------------------------------------------------
package_declarative_item
: subprogram_declaration
| type_declaration
| subtype_declaration
| constant_declaration
| signal_declaration
| shared__variable_declaration
| file_declaration
| alias_declaration
| component_declaration
| attribute_declaration
| attribute_specification
| disconnection_specification
| use_clause
| group_template_declaration
| group_declaration
;
package_declarative_part
: { package_declarative_item }
;
parameter_specification
: identifier IN discrete_range
;
physical_literal
: [ abstract_literal ] unit__name
;
physical_type_definition
: range_constraint UNITS base_unit_declaration { secondary_unit_declaration } END UNITS [ physical_type__simple_name ]
;
port_clause
: PORT LPAREN port_list RPAREN SEMI
;
port_list
: port__interface_list
;
port_map_aspect
: PORT MAP LPAREN port__association_list RPAREN
;
prefix
: name
| function_call
;
primary
: name
| literal
| aggregate
| function_call
| qualified_expression
| type_conversion
| allocator
| LPAREN expression RPAREN
;
#----------------------------------------------------
# Page:14 ##
#----------------------------------------------------
primary_unit
: entity_declaration
| configuration_declaration
| package_declaration
;
procedure_call
: procedure__name [ LPAREN actual_parameter_part RPAREN ]
;
procedure_call_statement
: [ label COLON ] procedure_call SEMI
;
process_declarative_item
: subprogram_declaration
| subprogram_body
| type_declaration
| subtype_declaration
| constant_declaration
| variable_declaration
| file_declaration