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tdevelop/languages/ada/ada.tree.g

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/*
* ANTLR Ada95 tree super grammar (base class)
*
* Oliver M. Kellogg <okellogg@users.sourceforge.net>
*
* $Id$
*
*/
options {
language="Cpp";
}
class AdaTreeParserSuper extends TreeParser;
options {
importVocab=Ada;
}
// Compilation Unit: This is the start rule.
compilation_unit
: context_items_opt ( library_item | subunit ) ( pragma )*
;
pragma : #(PRAGMA IDENTIFIER ( pragma_arg )* )
;
pragma_arg
: #(RIGHT_SHAFT IDENTIFIER expression)
| expression
;
context_items_opt
: #(CONTEXT_CLAUSE ( pragma | with_clause | use_clause )* )
;
with_clause
: #(WITH_CLAUSE ( compound_name )+ )
;
compound_name
: IDENTIFIER
| #(DOT compound_name IDENTIFIER)
;
use_clause
: #(USE_TYPE_CLAUSE ( subtype_mark )+ )
| #(USE_CLAUSE ( compound_name )+ )
;
subtype_mark
: compound_name
| #(TIC compound_name attribute_id)
;
attribute_id : RANGE
| DIGITS
| DELTA
| ACCESS
| IDENTIFIER
;
library_item :
#(LIBRARY_ITEM modifiers
( subprog_decl_or_rename_or_inst_or_body
| #(PACKAGE_BODY def_id pkg_body_part)
| #(GENERIC_PACKAGE_INSTANTIATION def_id generic_inst)
| #(PACKAGE_SPECIFICATION def_id pkg_spec_part)
| #(PACKAGE_RENAMING_DECLARATION def_id renames)
| generic_decl
)
)
;
modifiers : #(MODIFIERS
( ABSTRACT
| ACCESS
| ALIASED
| ALL
| CONSTANT
| IN
| LIMITED
| OUT
| PRIVATE
| PROTECTED
| REVERSE
| TAGGED
)*
// We can afford to be this loose because the parser
// has already fended off illegal usages, i.e. we can
// be sure that we are only dealing with permissible
// values for each usage context here.
// Only exception: PRIVATE as the prefix of private
// {generic|package|subprogram} library-level decl.
// The parser has let this in for bodies as well
// (which is not legal), so we need a semantic check.
)
;
id_opt : #(ID_OPT ( def_designator )? )
;
end_id_opt : #(END ( def_designator )? )
;
subprog_decl
: #(GENERIC_PROCEDURE_INSTANTIATION def_id generic_inst)
| #(PROCEDURE_RENAMING_DECLARATION def_id formal_part_opt renames)
| #(PROCEDURE_DECLARATION def_id formal_part_opt)
| #(PROCEDURE_BODY_STUB def_id formal_part_opt)
| #(ABSTRACT_PROCEDURE_DECLARATION def_id formal_part_opt)
| #(GENERIC_FUNCTION_INSTANTIATION def_designator generic_inst)
| #(FUNCTION_RENAMING_DECLARATION def_designator function_tail renames)
| #(FUNCTION_DECLARATION def_designator function_tail)
| #(FUNCTION_BODY_STUB def_designator function_tail)
| #(ABSTRACT_FUNCTION_DECLARATION def_id function_tail)
;
def_id : compound_name // Can afford looseness because parser is tight.
;
generic_inst : compound_name ( value_s )?
;
value : #(OTHERS expression)
| #(RIGHT_SHAFT ranged_expr_s expression)
| ranged_expr_s
;
ranged_expr_s
: #(PIPE ranged_expr_s ranged_expr)
| ranged_expr
;
ranged_expr
: #(DOT_DOT expression simple_expression)
| #(RANGE expression range)
| expression
;
range_constraint : #(RANGE_CONSTRAINT range)
;
range : ( range_dots
| range_attrib_ref
)
;
range_dots : #(DOT_DOT simple_expression simple_expression)
;
range_attrib_ref : #(RANGE_ATTRIBUTE_REFERENCE prefix ( expression )? )
;
prefix : IDENTIFIER
| #(DOT prefix ( ALL | IDENTIFIER ) )
| #(INDEXED_COMPONENT prefix value_s )
;
formal_part_opt : #(FORMAL_PART_OPT ( parameter_specification )* )
;
parameter_specification
: #(PARAMETER_SPECIFICATION defining_identifier_list modifiers
subtype_mark init_opt)
;
defining_identifier_list : #(DEFINING_IDENTIFIER_LIST ( IDENTIFIER )+ )
;
renames : CHARACTER_STRING // CHARACTER_STRING should not really be there.
| OPERATOR_SYMBOL // OPERATOR_SYMBOL should be used instead.
| name
;
name : IDENTIFIER
| #(DOT name
( ALL
| IDENTIFIER
| CHARACTER_LITERAL
| OPERATOR_SYMBOL
)
)
| #(INDEXED_COMPONENT name value_s)
| #(TIC name attribute_id)
;
definable_operator_symbol : OPERATOR_SYMBOL
;
parenthesized_primary
: #(PARENTHESIZED_PRIMARY ( NuLL | value_s extension_opt ) )
;
extension_opt : #(EXTENSION_OPT ( NuLL | value_s )? )
;
def_designator
: compound_name
| definable_operator_symbol
;
function_tail : formal_part_opt subtype_mark
;
spec_decl_part
: #(GENERIC_PACKAGE_INSTANTIATION def_id generic_inst)
| #(PACKAGE_SPECIFICATION def_id pkg_spec_part)
| #(PACKAGE_RENAMING_DECLARATION def_id renames)
;
pkg_spec_part
: basic_declarative_items_opt
private_declarative_items_opt
end_id_opt
;
basic_declarative_items_opt
: #(BASIC_DECLARATIVE_ITEMS_OPT ( basic_decl_item )* )
;
private_declarative_items_opt
: #(PRIVATE_DECLARATIVE_ITEMS_OPT ( basic_decl_item )* )
;
basic_decl_item
: spec_decl_part
| task_type_or_single_decl
| prot_type_or_single_decl
| subprog_decl
| decl_common
;
task_type_or_single_decl
: #(TASK_TYPE_DECLARATION def_id discrim_part_opt task_definition_opt)
| #(SINGLE_TASK_DECLARATION def_id task_definition_opt)
;
task_definition_opt
: task_items_opt private_task_items_opt
;
discrim_part_opt
: #(DISCRIM_PART_OPT ( BOX | discriminant_specifications )? )
;
discriminant_specifications
: #(DISCRIMINANT_SPECIFICATIONS ( discriminant_specification )* )
;
discriminant_specification
: #(DISCRIMINANT_SPECIFICATION defining_identifier_list
modifiers subtype_mark init_opt)
;
init_opt : #(INIT_OPT ( expression )? )
; // `expression' is of course much too loose;
// semantic checks are required in the usage contexts.
task_items_opt
: #(TASK_ITEMS_OPT entrydecls_repspecs_opt)
;
entrydecls_repspecs_opt
: ( entry_declaration | pragma | rep_spec )*
;
entry_declaration
: #(ENTRY_DECLARATION IDENTIFIER
discrete_subtype_def_opt formal_part_opt)
;
discrete_subtype_def_opt
: #(DISCRETE_SUBTYPE_DEF_OPT ( discrete_subtype_definition )? )
;
discrete_subtype_definition // TBD
: range
| subtype_ind
;
rep_spec : #(RECORD_REPRESENTATION_CLAUSE subtype_mark align_opt comp_loc_s)
| #(AT_CLAUSE subtype_mark expression)
| #(ATTRIBUTE_DEFINITION_CLAUSE subtype_mark expression)
// attrib_def. Semantic check must ensure that the
// subtype_mark contains an attribute reference.
| #(ENUMERATION_REPESENTATION_CLAUSE local_enum_name enumeration_aggregate)
;
align_opt : #(MOD_CLAUSE_OPT ( expression )? )
;
comp_loc_s
: #(COMPONENT_CLAUSES_OPT
( pragma
| subtype_mark expression range
)*
)
;
private_task_items_opt
: #(PRIVATE_TASK_ITEMS_OPT entrydecls_repspecs_opt )
;
prot_type_or_single_decl
: #(PROTECTED_TYPE_DECLARATION def_id discrim_part_opt protected_definition)
| #(SINGLE_PROTECTED_DECLARATION def_id protected_definition)
;
prot_private_opt : #(PROT_PRIVATE_OPT ( prot_member_decl_s )? )
;
protected_definition
: prot_op_decl_s prot_private_opt end_id_opt
;
prot_op_decl_s
: #(PROT_OP_DECLARATIONS ( prot_op_decl )* )
;
prot_op_decl
: entry_declaration
| #(PROCEDURE_DECLARATION def_id formal_part_opt)
| #(FUNCTION_DECLARATION def_designator function_tail)
| rep_spec
| pragma
;
prot_member_decl_s
: #(PROT_MEMBER_DECLARATIONS ( prot_op_decl | comp_decl )* )
;
comp_decl
: #(COMPONENT_DECLARATION defining_identifier_list component_subtype_def init_opt)
;
// decl_common is shared between declarative_item and basic_decl_item.
// decl_common only contains specifications.
decl_common
: // type_def:
#(ENUMERATION_TYPE_DECLARATION IDENTIFIER enum_id_s)
| #(SIGNED_INTEGER_TYPE_DECLARATION IDENTIFIER range)
| #(MODULAR_TYPE_DECLARATION IDENTIFIER expression)
| #(FLOATING_POINT_DECLARATION IDENTIFIER expression range_constraint_opt)
| #(ORDINARY_FIXED_POINT_DECLARATION IDENTIFIER expression range)
| #(DECIMAL_FIXED_POINT_DECLARATION IDENTIFIER expression expression range_constraint_opt)
| array_type_declaration
| access_type_declaration
//
| #(INCOMPLETE_TYPE_DECLARATION IDENTIFIER discrim_part_opt)
// derived_or_private_or_record
| #(PRIVATE_EXTENSION_DECLARATION id_and_discrim modifiers subtype_ind)
| #(DERIVED_RECORD_EXTENSION id_and_discrim modifiers subtype_ind record_definition)
| #(ORDINARY_DERIVED_TYPE_DECLARATION id_and_discrim subtype_ind)
| #(PRIVATE_TYPE_DECLARATION id_and_discrim modifiers)
| #(RECORD_TYPE_DECLARATION id_and_discrim modifiers record_definition)
//
| #(SUBTYPE_DECLARATION IDENTIFIER subtype_ind)
| generic_decl
| use_clause
| rep_spec // enumeration_representation_clause only
| #(EXCEPTION_RENAMING_DECLARATION def_id compound_name)
| #(OBJECT_RENAMING_DECLARATION def_id subtype_mark name)
| #(EXCEPTION_DECLARATION defining_identifier_list)
| #(NUMBER_DECLARATION defining_identifier_list expression)
| #(ARRAY_OBJECT_DECLARATION defining_identifier_list modifiers
array_type_definition init_opt)
| #(OBJECT_DECLARATION defining_identifier_list modifiers
subtype_ind init_opt)
;
id_and_discrim
: IDENTIFIER discrim_part_opt
;
enum_id_s : ( enumeration_literal_specification )+
;
enumeration_literal_specification : IDENTIFIER | CHARACTER_LITERAL
;
array_type_definition
: index_or_discrete_range_s component_subtype_def
;
range_constraint_opt : ( range_constraint )?
;
array_type_declaration
: #(ARRAY_TYPE_DECLARATION IDENTIFIER array_type_definition)
;
index_or_discrete_range_s
: index_or_discrete_range
| #(COMMA index_or_discrete_range_s index_or_discrete_range)
;
index_or_discrete_range
: #(DOT_DOT simple_expression simple_expression)
| #(RANGE simple_expression ( BOX | range) )
| simple_expression
;
component_subtype_def : modifiers subtype_ind // mod=aliased_opt
;
subtype_ind
: #(SUBTYPE_INDICATION subtype_mark constraint_opt)
;
constraint_opt
: ( range_constraint
| digits_constraint
| delta_constraint
| index_constraint
| discriminant_constraint
)?
;
digits_constraint
: #(DIGITS_CONSTRAINT expression range_constraint_opt)
;
delta_constraint
: #(DELTA_CONSTRAINT expression range_constraint_opt)
;
index_constraint
: #(INDEX_CONSTRAINT ( discrete_range )+ )
;
discrete_range
: range
| subtype_ind
;
discriminant_constraint
: #(DISCRIMINANT_CONSTRAINT ( discriminant_association )+ )
;
discriminant_association
: #(DISCRIMINANT_ASSOCIATION selector_names_opt expression)
;
selector_names_opt
: #(SELECTOR_NAMES_OPT ( selector_name )* )
;
selector_name : IDENTIFIER // TBD: sem pred
;
access_type_declaration
: #(ACCESS_TO_PROCEDURE_DECLARATION IDENTIFIER modifiers formal_part_opt)
| #(ACCESS_TO_FUNCTION_DECLARATION IDENTIFIER modifiers function_tail)
| #(ACCESS_TO_OBJECT_DECLARATION IDENTIFIER modifiers subtype_ind)
;
record_definition : ( component_list )?
;
component_list
: component_items ( variant_part )?
;
component_items
: #(COMPONENT_ITEMS ( pragma | comp_decl )* )
;
variant_part
: #(VARIANT_PART discriminant_direct_name variant_s)
;
discriminant_direct_name : IDENTIFIER // TBD: symtab lookup.
;
variant_s : #(VARIANTS ( variant )+ )
;
variant : #(VARIANT choice_s ( component_list )? )
;
choice_s : #(PIPE choice_s choice )
| choice
;
choice : OTHERS
| discrete_with_range
| expression
;
discrete_with_range : mark_with_constraint | range
;
mark_with_constraint
: #(MARK_WITH_CONSTRAINT subtype_mark range_constraint)
;
local_enum_name : IDENTIFIER // to be refined: do a symbol table lookup
;
enumeration_aggregate : ( value )*
;
generic_decl
: #(GENERIC_PACKAGE_RENAMING generic_formal_part_opt def_id renames)
| #(GENERIC_PACKAGE_DECLARATION generic_formal_part_opt def_id
pkg_spec_part)
| #(GENERIC_PROCEDURE_RENAMING generic_formal_part_opt def_id
formal_part_opt renames)
| #(GENERIC_PROCEDURE_DECLARATION generic_formal_part_opt def_id
formal_part_opt)
| #(GENERIC_FUNCTION_RENAMING generic_formal_part_opt def_designator
function_tail renames)
| #(GENERIC_FUNCTION_DECLARATION generic_formal_part_opt def_id
function_tail)
;
generic_formal_part_opt
: #(GENERIC_FORMAL_PART
( pragma | use_clause | generic_formal_parameter )*
)
;
generic_formal_parameter
: // FORMAL_TYPE_DECLARATIONs:
#(FORMAL_DISCRETE_TYPE_DECLARATION def_id)
| #(FORMAL_SIGNED_INTEGER_TYPE_DECLARATION def_id)
| #(FORMAL_MODULAR_TYPE_DECLARATION def_id)
| #(FORMAL_DECIMAL_FIXED_POINT_DECLARATION def_id)
| #(FORMAL_ORDINARY_FIXED_POINT_DECLARATION def_id)
| #(FORMAL_FLOATING_POINT_DECLARATION def_id)
| formal_array_type_declaration
| formal_access_type_declaration
| #(FORMAL_PRIVATE_TYPE_DECLARATION id_part modifiers)
| #(FORMAL_ORDINARY_DERIVED_TYPE_DECLARATION id_part subtype_ind)
| #(FORMAL_PRIVATE_EXTENSION_DECLARATION id_part modifiers subtype_ind)
| #(FORMAL_PROCEDURE_DECLARATION def_id formal_part_opt
subprogram_default_opt)
| #(FORMAL_FUNCTION_DECLARATION def_designator function_tail
subprogram_default_opt)
| #(FORMAL_PACKAGE_DECLARATION def_id compound_name formal_package_actual_part_opt)
| parameter_specification
;
id_part : def_id discrim_part_opt
;
formal_array_type_declaration : array_type_declaration
;
formal_access_type_declaration : access_type_declaration
;
subprogram_default_opt : ( BOX | name )?
// #(SUBPROGRAM_DEFAULT_OPT ( BOX | name )? )
;
formal_package_actual_part_opt
: ( BOX | defining_identifier_list )?
;
subprog_decl_or_rename_or_inst_or_body
: subprog_decl
| procedure_body
| function_body
;
procedure_body
: #(PROCEDURE_BODY def_id formal_part_opt body_part)
;
function_body
: #(FUNCTION_BODY def_designator function_tail body_part)
;
body_part : declarative_part block_body end_id_opt
;
declarative_part
: #(DECLARATIVE_PART ( pragma | declarative_item )* )
;
// A declarative_item may appear in the declarative part of any body.
declarative_item
: #(PACKAGE_BODY_STUB def_id)
| #(PACKAGE_BODY def_id pkg_body_part)
| spec_decl_part
| #(TASK_BODY_STUB def_id)
| #(TASK_BODY def_id body_part end_id_opt)
| task_type_or_single_decl
| #(PROTECTED_BODY_STUB def_id)
| #(PROTECTED_BODY def_id prot_op_bodies_opt end_id_opt)
| prot_type_or_single_decl
| subprog_decl_or_rename_or_inst_or_body
| decl_common
;
pkg_body_part : declarative_part block_body_opt end_id_opt
;
block_body_opt
: #(BLOCK_BODY_OPT ( handled_stmt_s )? )
;
prot_op_bodies_opt
: #(PROT_OP_BODIES_OPT
( pragma | entry_body | subprog_decl_or_body )*
)
;
subprog_decl_or_body
: procedure_body
| #(PROCEDURE_DECLARATION def_id formal_part_opt)
| function_body
| #(FUNCTION_DECLARATION def_designator function_tail)
;
block_body : #(BLOCK_BODY handled_stmt_s)
;
handled_stmt_s
: #(HANDLED_SEQUENCE_OF_STATEMENTS statements except_handler_part_opt)
;
handled_stmts_opt
: #(HANDLED_STMTS_OPT ( statements except_handler_part_opt )? )
;
statements
: #(SEQUENCE_OF_STATEMENTS ( pragma | statement )+ )
;
statement : #(STATEMENT def_label_opt
( null_stmt
| exit_stmt
| return_stmt
| goto_stmt
| delay_stmt
| abort_stmt
| raise_stmt
| requeue_stmt
| accept_stmt
| select_stmt
| if_stmt
| case_stmt
| loop_stmt id_opt
| block end_id_opt
| call_or_assignment
// | code_stmt // not yet implemented in parser
)
)
;
def_label_opt : #(LABEL_OPT ( IDENTIFIER )? )
;
null_stmt : NULL_STATEMENT
;
if_stmt : #(IF_STATEMENT cond_clause elsifs_opt else_opt)
;
cond_clause : #(COND_CLAUSE condition statements)
;
condition : expression
;
elsifs_opt : #(ELSIFS_OPT ( cond_clause )* )
;
else_opt : #(ELSE_OPT ( statements )? )
;
case_stmt : #(CASE_STATEMENT expression alternative_s)
;
alternative_s : ( case_statement_alternative )+
;
case_statement_alternative
: #(CASE_STATEMENT_ALTERNATIVE choice_s statements)
;
loop_stmt
: #(LOOP_STATEMENT iteration_scheme_opt statements)
;
iteration_scheme_opt
: #(ITERATION_SCHEME_OPT
( #(WHILE condition)
| #(FOR IDENTIFIER modifiers discrete_subtype_definition)
)? // mod=reverse_opt
)
;
block : #(BLOCK_STATEMENT declare_opt block_body)
;
declare_opt
: #(DECLARE_OPT ( declarative_part )? )
;
exit_stmt
: #(EXIT_STATEMENT ( label_name )? ( WHEN condition )? ) // TBD !!!
;
label_name : IDENTIFIER
;
return_stmt
: #(RETURN_STATEMENT ( expression )? )
;
goto_stmt : #(GOTO_STATEMENT label_name)
;
call_or_assignment
: #(ASSIGNMENT_STATEMENT name expression)
| #(CALL_STATEMENT name)
;
entry_body
: #(ENTRY_BODY def_id entry_body_formal_part entry_barrier body_part)
;
entry_body_formal_part : entry_index_spec_opt formal_part_opt
;
entry_index_spec_opt
: #(ENTRY_INDEX_SPECIFICATION ( def_id discrete_subtype_definition )? )
;
entry_barrier : condition
;
entry_call_stmt
: #(ENTRY_CALL_STATEMENT name)
;
accept_stmt
: #(ACCEPT_STATEMENT def_id entry_index_opt formal_part_opt
handled_stmts_opt end_id_opt )
;
entry_index_opt
: #(ENTRY_INDEX_OPT ( expression )? )
;
delay_stmt
: #(DELAY_STATEMENT modifiers expression) //mod=until_opt
;
// SELECT_STATEMENT itself is not modeled since it is trivially
// reconstructed:
// select_statement ::= selective_accept | timed_entry_call
// | conditional_entry_call | asynchronous_select
//
select_stmt
: #(ASYNCHRONOUS_SELECT triggering_alternative abortable_part)
| #(SELECTIVE_ACCEPT selective_accept)
| #(TIMED_ENTRY_CALL entry_call_alternative delay_alternative)
| #(CONDITIONAL_ENTRY_CALL entry_call_alternative statements)
;
triggering_alternative
: #(TRIGGERING_ALTERNATIVE
( delay_stmt | entry_call_stmt ) stmts_opt
)
;
abortable_part
: #(ABORTABLE_PART stmts_opt)
;
entry_call_alternative
: #(ENTRY_CALL_ALTERNATIVE entry_call_stmt stmts_opt)
;
selective_accept : guard_opt select_alternative or_select_opt else_opt
;
guard_opt : #(GUARD_OPT ( condition ( pragma )* )? )
;
select_alternative
: accept_alternative
| delay_alternative
| TERMINATE_ALTERNATIVE
;
accept_alternative
: #(ACCEPT_ALTERNATIVE accept_stmt stmts_opt)
;
delay_alternative
: #(DELAY_ALTERNATIVE delay_stmt stmts_opt)
;
stmts_opt : ( pragma | statement )*
;
or_select_opt
: #(OR_SELECT_OPT ( guard_opt select_alternative )* )
;
abort_stmt
: #(ABORT_STATEMENT ( name )+ )
;
except_handler_part_opt
: #(EXCEPT_HANDLER_PART_OPT ( exception_handler )* )
;
exception_handler
: #(EXCEPTION_HANDLER identifier_colon_opt except_choice_s
statements
)
;
identifier_colon_opt
: #(IDENTIFIER_COLON_OPT ( IDENTIFIER )? )
;
except_choice_s
: #(PIPE except_choice_s exception_choice)
| exception_choice
;
exception_choice : compound_name
| OTHERS
;
raise_stmt
: #(RAISE_STATEMENT ( compound_name )? )
;
requeue_stmt
: #(REQUEUE_STATEMENT name ( ABORT )? )
;
operator_call : #(OPERATOR_SYMBOL value_s)
;
value_s : #(VALUES ( value )+ )
;
expression
: #(AND expression relation)
| #(AND_THEN expression relation)
| #(OR expression relation)
| #(OR_ELSE expression relation)
| #(XOR expression relation)
| relation
;
relation
: #(IN simple_expression range_or_mark)
| #(NOT_IN simple_expression range_or_mark)
| #(EQ simple_expression simple_expression)
| #(NE simple_expression simple_expression)
| #(LT_ simple_expression simple_expression)
| #(LE simple_expression simple_expression)
| #(GT simple_expression simple_expression)
| #(GE simple_expression simple_expression)
| simple_expression
;
range_or_mark
: range
| subtype_mark
;
simple_expression
: #(PLUS simple_expression signed_term)
| #(MINUS simple_expression signed_term)
| #(CONCAT simple_expression signed_term)
| signed_term
;
signed_term
: #(UNARY_PLUS term)
| #(UNARY_MINUS term)
| term
;
term : #(STAR term factor)
| #(DIV term factor)
| #(MOD term factor)
| #(REM term factor)
| factor
;
factor : #(NOT primary)
| #(ABS primary)
| #(EXPON primary primary)
| primary
;
primary :
( name_or_qualified
| parenthesized_primary
| allocator
| NuLL
| NUMERIC_LIT
| CHARACTER_LITERAL
| CHAR_STRING
| operator_call
)
;
// Temporary, to be turned into just `qualified'.
// We get away with it because `qualified' is always mentioned
// together with `name'.
// Only exception: `code_stmt', which is not yet implemented.
name_or_qualified
: IDENTIFIER
| #(DOT name_or_qualified
( ALL
| IDENTIFIER
| CHARACTER_LITERAL
| OPERATOR_SYMBOL
)
)
| #(INDEXED_COMPONENT name_or_qualified value_s)
| #(TIC name_or_qualified
( parenthesized_primary
| attribute_id
)
)
;
allocator : #(ALLOCATOR name_or_qualified)
;
subunit : #(SUBUNIT compound_name
( subprogram_body
| package_body
| task_body
| protected_body
)
)
;
subprogram_body
: procedure_body
| function_body
;
package_body : #(PACKAGE_BODY def_id pkg_body_part)
;
task_body : #(TASK_BODY def_id body_part)
;
protected_body : #(PROTECTED_BODY def_id prot_op_bodies_opt)
;
// TBD
// code_stmt : #(CODE_STATEMENT qualified)
// ;