/usr/share/ada/adainclude/asis/asis-elements.adb is in libasis2010-dev 2010-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- --
-- ASIS-for-GNAT IMPLEMENTATION COMPONENTS --
-- --
-- A S I S . E L E M E N T S --
-- --
-- B o d y --
-- --
-- Copyright (C) 1995-2010, Free Software Foundation, Inc. --
-- --
-- ASIS-for-GNAT is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 2, or (at your option) any later --
-- version. ASIS-for-GNAT is distributed in the hope that it will be use- --
-- ful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER- --
-- CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General --
-- Public License for more details. You should have received a copy of the --
-- GNU General Public License distributed with ASIS-for-GNAT; see file --
-- COPYING. If not, write to the Free Software Foundation, 51 Franklin --
-- Street, Fifth Floor, Boston, MA 02110-1301, USA. --
-- --
-- --
-- --
-- --
-- --
-- --
-- --
-- --
-- --
-- ASIS-for-GNAT was originally developed by the ASIS-for-GNAT team at the --
-- Software Engineering Laboratory of the Swiss Federal Institute of --
-- Technology (LGL-EPFL) in Lausanne, Switzerland, in cooperation with the --
-- Scientific Research Computer Center of Moscow State University (SRCC --
-- MSU), Russia, with funding partially provided by grants from the Swiss --
-- National Science Foundation and the Swiss Academy of Engineering --
-- Sciences. ASIS-for-GNAT is now maintained by AdaCore --
-- (http://www.adacore.com). --
-- --
------------------------------------------------------------------------------
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Unchecked_Conversion;
with Interfaces; use Interfaces;
with GNAT.HTable;
with Asis.Clauses;
with Asis.Compilation_Units;
with Asis.Declarations; use Asis.Declarations;
with Asis.Definitions;
with Asis.Errors; use Asis.Errors;
with Asis.Exceptions; use Asis.Exceptions;
with Asis.Extensions;
with Asis.Statements;
with Asis.Set_Get; use Asis.Set_Get;
with A4G.A_Opt;
with A4G.A_Output; use A4G.A_Output;
with A4G.A_Sem; use A4G.A_Sem;
with A4G.A_Sinput; use A4G.A_Sinput;
with A4G.A_Types;
with A4G.Asis_Tables; use A4G.Asis_Tables;
with A4G.Contt; use A4G.Contt;
with A4G.Contt.UT; use A4G.Contt.UT;
with A4G.Encl_El; use A4G.Encl_El;
with A4G.Knd_Conv; use A4G.Knd_Conv;
with A4G.Mapping; use A4G.Mapping;
with A4G.Vcheck; use A4G.Vcheck;
with Atree; use Atree;
with Einfo; use Einfo;
with Nlists; use Nlists;
with Sinfo; use Sinfo;
with Sinput; use Sinput;
with Snames; use Snames;
with Stand; use Stand;
package body Asis.Elements is
-- !!!??? This file is '-gnatg-compilable', but both its content and its
-- !!!??? documentation need revising
function "=" (Left, Right : Element) return Boolean
renames Asis.Set_Get."=";
Package_Name : constant String := "Asis.Elements.";
------------------------------------------------------------------------------
---------------------------
-- ASIS 2005 Draft stuff --
---------------------------
----------------------------
-- Access_Definition_Kind --
----------------------------
function Access_Definition_Kind
(Definition : Asis.Definition)
return Asis.Access_Definition_Kinds
is
begin
Check_Validity (Definition, Package_Name & "Access_Definition_Kind");
if not A4G.A_Opt.ASIS_2005_Mode then
Set_Error_Status
(Status => Asis.Errors.Use_Error,
Diagnosis => "ASIS 2005 queries require initialization with " &
"-asis05");
raise ASIS_Failed;
end if;
return Access_Definition_Kind_From_Internal (Int_Kind (Definition));
end Access_Definition_Kind;
--------------------
-- Interface_Kind --
--------------------
function Interface_Kind
(Definition : Asis.Definition)
return Asis.Interface_Kinds
is
begin
Check_Validity (Definition, Package_Name & "Interface_Kind");
if not A4G.A_Opt.ASIS_2005_Mode then
Set_Error_Status
(Status => Asis.Errors.Use_Error,
Diagnosis => "ASIS 2005 queries require initialization with " &
"-asis05");
raise ASIS_Failed;
end if;
return Interface_Kind_From_Internal (Int_Kind (Definition));
end Interface_Kind;
------------------------
-- Is_Not_Null_Return --
------------------------
function Is_Not_Null_Return
(Element : Asis.Element)
return Boolean
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Element);
Arg_Node : Node_Id := Node (Element);
Result : Boolean := False;
begin
Check_Validity (Element, Package_Name & "Is_Not_Null_Return");
if not A4G.A_Opt.ASIS_2005_Mode then
Set_Error_Status
(Status => Asis.Errors.Use_Error,
Diagnosis => "ASIS 2005 queries require initialization with " &
"-asis05");
raise ASIS_Failed;
end if;
case Arg_Kind is
when A_Function_Declaration |
A_Function_Body_Declaration |
A_Function_Renaming_Declaration |
A_Function_Body_Stub |
A_Generic_Function_Declaration |
A_Formal_Function_Declaration =>
Arg_Node := Specification (Arg_Node);
Result := Null_Exclusion_Present (Arg_Node);
when An_Access_To_Function |
An_Access_To_Protected_Function |
An_Anonymous_Access_To_Function |
An_Anonymous_Access_To_Protected_Function =>
Result := Null_Exclusion_Present (Arg_Node);
when others =>
null;
end case;
return Result;
end Is_Not_Null_Return;
------------------------
-- Is_Prefix_Notation --
------------------------
function Is_Prefix_Notation (Call : Asis.Element) return Boolean is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Call);
Arg_Node : constant Node_Id := R_Node (Call);
Result : Boolean := False;
begin
Check_Validity (Call, Package_Name & "Is_Prefix_Notation");
if not A4G.A_Opt.ASIS_2005_Mode then
Set_Error_Status
(Status => Asis.Errors.Use_Error,
Diagnosis => "ASIS 2005 queries require initialization with " &
"-asis05");
raise ASIS_Failed;
end if;
if Arg_Kind = A_Procedure_Call_Statement then
if Is_Rewrite_Substitution (Arg_Node)
and then
Nkind (Original_Node (Arg_Node)) = Nkind (Arg_Node)
and then
Nkind (Sinfo.Name (Arg_Node)) = N_Identifier
and then
Nkind (Sinfo.Name (Original_Node (Arg_Node))) =
N_Selected_Component
then
Result := True;
end if;
elsif Arg_Kind = A_Function_Call
and then
Is_Rewrite_Substitution (Arg_Node)
then
-- If prefix notation is used for a function call, the corresponding
-- A_Function_Call element is based on the rewritten node and the
-- original node is not used at all
if Node (Call) = Arg_Node then
Result := Is_Rewritten_Function_Prefix_Notation (Arg_Node);
elsif Nkind (Arg_Node) = N_Explicit_Dereference then
-- This is a case of *implicit* dereference :(
Result :=
Is_Rewritten_Impl_Deref_Function_Prefix_Notation (Node (Call));
end if;
end if;
return Result;
end Is_Prefix_Notation;
------------------------------------------------------------------------------
function Unit_Declaration
(Compilation_Unit : Asis.Compilation_Unit)
return Asis.Declaration
is
Unit_Kind : Asis.Unit_Kinds;
Unit_Declaration_Node : Node_Id;
Special_Case : Special_Cases := Not_A_Special_Case;
begin
Check_Validity (Compilation_Unit, Package_Name & "Unit_Declaration");
Reset_Context (Encl_Cont_Id (Compilation_Unit));
Unit_Kind := Kind (Compilation_Unit);
if Unit_Kind = Not_A_Unit then
Raise_ASIS_Inappropriate_Compilation_Unit
(Package_Name & "Unit_Declaration");
end if;
if Unit_Kind = A_Nonexistent_Declaration or else
Unit_Kind = A_Nonexistent_Body or else
Unit_Kind = An_Unknown_Unit or else
Unit_Kind = A_Configuration_Compilation
then
return Nil_Element;
end if;
if Is_Standard (Compilation_Unit) then
Special_Case := Explicit_From_Standard;
Unit_Declaration_Node := Standard_Package_Node;
else
Unit_Declaration_Node := Unit (Top (Compilation_Unit));
end if;
if Unit_Kind = A_Procedure_Body_Subunit or else
Unit_Kind = A_Function_Body_Subunit or else
Unit_Kind = A_Package_Body_Subunit or else
Unit_Kind = A_Task_Body_Subunit or else
Unit_Kind = A_Protected_Body_Subunit
then
-- one step down the tree is required.
-- No Asis Element can correspond to
-- the N_Subunit Node
Unit_Declaration_Node := Proper_Body (Unit_Declaration_Node);
end if;
return Node_To_Element_New (Node => Unit_Declaration_Node,
Spec_Case => Special_Case,
In_Unit => Compilation_Unit);
exception
when ASIS_Inappropriate_Compilation_Unit =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Unit_Declaration");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Unit_Declaration",
Ex => Ex,
Arg_CU => Compilation_Unit);
end Unit_Declaration;
-----------------------------------------------------------------------------
function Enclosing_Compilation_Unit
(Element : Asis.Element)
return Asis.Compilation_Unit
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Element);
begin
Check_Validity (Element, Package_Name & "Enclosing_Compilation_Unit");
if Arg_Kind = Not_An_Element then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Enclosing_Compilation_Unit",
Wrong_Kind => Arg_Kind);
end if;
return Encl_Unit (Element);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Element,
Outer_Call => Package_Name & "Enclosing_Compilation_Unit");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Enclosing_Compilation_Unit",
Ex => Ex,
Arg_Element => Element);
end Enclosing_Compilation_Unit;
-----------------------------------------------------------------------------
function Context_Clause_Elements
(Compilation_Unit : Asis.Compilation_Unit;
Include_Pragmas : Boolean := False)
return Asis.Context_Clause_List
is
Unit_Kind : Asis.Unit_Kinds; -- Compilation_Unit kind
List_Before : List_Id;
begin
Check_Validity
(Compilation_Unit, Package_Name & "Context_Clause_Elements");
Unit_Kind := Kind (Compilation_Unit);
if Unit_Kind = Not_A_Unit then
Raise_ASIS_Inappropriate_Compilation_Unit
(Package_Name & "Context_Clause_Elements");
end if;
if Is_Standard (Compilation_Unit) or else
Unit_Kind = A_Nonexistent_Declaration or else
Unit_Kind = A_Nonexistent_Body or else
Unit_Kind = An_Unknown_Unit or else
Unit_Kind = A_Configuration_Compilation
then
-- The last part of the condition comes from the GNAT compilation
-- model. But it seems that it should be in the definition of
-- this query in the ASIS Standard
return Nil_Element_List;
end if;
List_Before := Context_Items (Top (Compilation_Unit));
return N_To_E_List_New
(List => List_Before,
Include_Pragmas => Include_Pragmas,
In_Unit => Compilation_Unit);
exception
when ASIS_Inappropriate_Compilation_Unit =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Context_Clause_Elements",
Bool_Par => Include_Pragmas);
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Context_Clause_Elements",
Ex => Ex,
Arg_CU => Compilation_Unit,
Bool_Par_ON => Include_Pragmas);
end Context_Clause_Elements;
------------------------------------------------------------------------------
function Configuration_Pragmas
(The_Context : Asis.Context)
return Asis.Pragma_Element_List
is
begin
Check_Validity (The_Context, Package_Name & "Configuration_Pragmas");
-- In the GNAT environment, "a list of pragmas that apply to all future
-- compilation_unit elements compiled into The_Context" is defined by
-- the -gnatA and -gnatec options used when calling the compiler and
-- by the content of configuration file(s) at the moment of the compiler
-- call. These things cannot be detected from the set of tree files
-- making up the Context, so the only thing we can do is to return
-- Nil_Element_List
return Nil_Element_List;
exception
when ASIS_Inappropriate_Context =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Configuration_Pragmas");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Configuration_Pragmas",
Ex => Ex);
end Configuration_Pragmas;
-----------------------------------------------------------------------------
function Compilation_Pragmas
(Compilation_Unit : Asis.Compilation_Unit)
return Asis.Pragma_Element_List
is
Unit_Kind : Asis.Unit_Kinds;
Config_Prgms : List_Id := No_List;
List_Before : List_Id;
Next_Pragma : Node_Id;
List_After : List_Id;
begin
Check_Validity (Compilation_Unit,
Package_Name & "Compilation_Pragmas");
Unit_Kind := Kind (Compilation_Unit);
if Unit_Kind = Not_A_Unit then
Raise_ASIS_Inappropriate_Compilation_Unit
(Package_Name & "Compilation_Pragmas");
end if;
if Is_Standard (Compilation_Unit) or else
Unit_Kind = A_Nonexistent_Declaration or else
Unit_Kind = A_Nonexistent_Body or else
Unit_Kind = An_Unknown_Unit or else
Unit_Kind = A_Configuration_Compilation
then
-- The last part of the condition is GNAT-specific
return Nil_Element_List;
end if;
Reset_Context (Encl_Cont_Id (Compilation_Unit));
-- For the GNAT compilation model, we consider that configuration
-- pragmas from the configuration file(s) are applied to the main unit
-- of the compilation only. So if some unit belonging to the Context
-- is compiled only as a supporter of some other units, but not on
-- their own, the result of Compilation_Pragmas applied to this unit
-- does not include any configuration pragmas from the configuration
-- file(s).
if Asis.Extensions.Is_Main_Unit_In_Tree (Compilation_Unit) then
Reset_Main_Tree (Compilation_Unit);
Config_Prgms :=
Config_Pragmas (Aux_Decls_Node (Top (Compilation_Unit)));
end if;
List_Before := Context_Items (Top (Compilation_Unit));
List_After := Pragmas_After (Aux_Decls_Node (Top (Compilation_Unit)));
Set_Element_List
(List => Config_Prgms,
Include_Pragmas => True,
Node_Knd => N_Pragma,
Special_Case => Configuration_File_Pragma,
In_Unit => Compilation_Unit,
Append => False);
-- The middle part - pragmas from the context clause - we have to
-- compose by hands, because we can add to the result only the
-- configuration pragmas
if Present (List_Before) then
Next_Pragma := First (List_Before);
Next_Pragma := Get_Next_Configuration_Pragma (Next_Pragma);
while Present (Next_Pragma) loop
Internal_Asis_Element_Table.Append
(Node_To_Element_New
(Node => Next_Pragma,
In_Unit => Compilation_Unit));
Next_Pragma := Get_Next_Configuration_Pragma (Next (Next_Pragma));
end loop;
end if;
Set_Element_List
(List => List_After,
Include_Pragmas => True,
Node_Knd => N_Pragma,
In_Unit => Compilation_Unit,
Append => True);
return Asis.Pragma_Element_List
(Internal_Asis_Element_Table.Table
(1 .. Internal_Asis_Element_Table.Last));
exception
when ASIS_Inappropriate_Compilation_Unit =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Compilation_Pragmas");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Compilation_Pragmas",
Ex => Ex,
Arg_CU => Compilation_Unit);
end Compilation_Pragmas;
------------------------------------------------------------------------------
function Element_Kind
(Element : Asis.Element)
return Asis.Element_Kinds
is
begin
Check_Validity (Element, Package_Name & "Element_Kind");
return Kind (Element);
end Element_Kind;
-----------------------------------------------------------------------------
function Pragma_Kind
(Pragma_Element : Asis.Pragma_Element)
return Asis.Pragma_Kinds
is
begin
Check_Validity (Pragma_Element, Package_Name & "Pragma_Kind");
return Pragma_Kind_From_Internal (Int_Kind (Pragma_Element));
end Pragma_Kind;
-----------------------------------------------------------------------------
function Defining_Name_Kind
(Defining_Name : Asis.Defining_Name)
return Asis.Defining_Name_Kinds
is
begin
Check_Validity (Defining_Name, Package_Name & "Defining_Name_Kind");
return Defining_Name_Kind_From_Internal (Int_Kind (Defining_Name));
end Defining_Name_Kind;
-----------------------------------------------------------------------------
function Declaration_Kind
(Declaration : Asis.Declaration)
return Asis.Declaration_Kinds
is
begin
Check_Validity (Declaration, Package_Name & "Declaration_Kind");
return Declaration_Kind_From_Internal (Int_Kind (Declaration));
end Declaration_Kind;
----------------
-- Trait_Kind --
----------------
function Trait_Kind (Element : Asis.Element) return Asis.Trait_Kinds is
-- Trait-related flag values:
Is_Abstract : Boolean;
Is_Limited : Boolean;
Is_Aliased : Boolean;
Is_Private : Boolean;
Arg_Node : Node_Id;
Trait_Defining_Node : Node_Id;
-- if the Node (Element) is not enough for defining the result,
-- Trait_Defining_Node is used for the tree traversing
Result : Asis.Trait_Kinds := An_Ordinary_Trait;
begin
Check_Validity (Element, Package_Name & "Trait_Kind");
-- ASIS_Element_Kinds.Trait_Kinds literals and GNAT tree flags mapping:
--
-- (This nice piece of documentation is for ASIS/Ada 95 only, we have not
-- extended it for Ada 2005)
--
-- type Trait_Kinds is (
--
-- Not_A_Trait, --> Unexpected element, its node always has no
-- -- corresponding flags and its kind does not belong
-- -- to the Node Kinds for which A_Private_Trait could
-- -- be determined
--
-- An_Ordinary_Trait, --> all flags are set off, and the node kind
-- does not belong to the Node Kinds for which
-- A_Private_Trait could be determined
--
-- An_Aliased_Trait, --> Aliased_Present set ON
--
-- An_Access_Definition_Trait, --> no special flag, could be defined
-- -- on the base of the presence of
-- -- the N_Access_Definition node as the
-- -- child node of the argument node
--
-- A_Reverse_Trait, --> Reverse_Present set ON
--
-- A_Private_Trait, --> except the case of
-- A_Formal_Derived_Type_Definition,
-- -- no special flag is presented in the corresponding
-- -- node, the A_Private_Trait could be defined
-- -- on the base of Node Kinds and setting other
-- -- flags OFF;
-- -- for A_Formal_Derived_Type_Definition -
-- -- Private_Present set ON
--
-- A_Limited_Trait, --> Limited_Present set ON and corresponding node
-- -- does not belong to the Node Kinds for which
-- -- A_Private_Trait could be defined
--
-- A_Limited_Private_Trait, --> Limited_Present set ON and corresponding
-- -- node belongs to the Node Kinds for which
-- -- A_Private_Trait could be defined
--
-- An_Abstract_Trait, --> For types: Abstract_Present set ON and
-- -- corresponding node does not belong to the
-- -- Node Kinds for which A_Private_Trait could be
-- -- defined;
-- -- For subprograms: no special flag, could be
-- -- defined on the base of the Node Kind of the
-- -- argument node
--
-- An_Abstract_Private_Trait, --> except the case of
-- -- A_Formal_Derived_Type_Definition,
-- -- Abstract_Present set ON and corresponding
-- -- node belongs to the Node Kinds for which
-- -- A_Private_Trait could be defined;
-- -- for A_Formal_Derived_Type_Definition -
-- -- Abstract_Present set ON and
-- -- Private_Present set ON
--
-- An_Abstract_Limited_Trait, --> Abstract_Present set ON,
-- -- Limited_Present set ON
-- -- and corresponding node does not belong
-- -- to the Node Kinds for which
-- -- A_Private_Trait could be defined
--
-- An_Abstract_Limited_Private_Trait); --> Abstract_Present set ON,
-- -- Limited_Present set ON and
-- -- corresponding node belongs
-- -- to Node Kinds for which
-- -- A_Private_Trait could be defined
--
----------------------------------------------------------------------------
-- Expected Argument_Kinds: -> Corresponding tree Nodes:
-- Possible Trait values: --> Provided trait-related flags and
-- combination of their values
-- corresponding to the Trait value
----------------------------------------------------------------------------
--
-- Expected Declaration_Kinds:
-- ==========================
--
-- A_Private_Type_Declaration -> N_Private_Type_Declaration (*1*)
-- A_Private_Trait --> Abstract_Present = OFF
-- Limited_Present = OFF
--
-- A_Limited_Private_Trait --> Abstract_Present = OFF
-- Limited_Present = ON
--
-- An_Abstract_Private_Trait --> Abstract_Present = ON
-- Limited_Present = OFF
--
-- An_Abstract_Limited_Private_Trait --> Abstract_Present = ON
-- Limited_Present = ON
-----------------------------------------------
-- A_Private_Extension_Declaration -> N_Private_Extension_Declaration (*2*)
-- A_Private_Trait --> Abstract_Present = OFF
--
-- An_Abstract_Private_Trait --> Abstract_Present = ON
-----------------------------------------------
-- A_Variable_Declaration -> N_Object_Declaration (*3*)
-- An_Ordinary_Trait --> Aliased_Present = OFF
--
-- An_Aliased_Trait --> Aliased_Present = ON
-----------------------------------------------
-- A_Constant_Declaration -> N_Object_Declaration (*3*)
-- An_Ordinary_Trait --> Aliased_Present = OFF
--
-- An_Aliased_Trait --> Aliased_Present = ON
-----------------------------------------------
-- A_Deferred_Constant_Declaration -> N_Object_Declaration (*3*)
-- An_Ordinary_Trait --> Aliased_Present = OFF
--
-- An_Aliased_Trait --> Aliased_Present = ON
-----------------------------------------------
-- A_Discriminant_Specification -> N_Discriminant_Specification (*4*)
-- Has no trait-related flags
--
-- An_Ordinary_Trait --> Nkind(Discriminant_Type(Definition.Node))
-- /= N_Access_Definition
-- An_Access_Definition_Trait--> Nkind(Discriminant_Type(Definition.Node))
-- = N_Access_Definition
-----------------------------------------------
-- A_Loop_Parameter_Specification -> N_Loop_Parameter_Specification (*5*)
-- An_Ordinary_Trait --> Reverse_Present = OFF
--
-- A_Reverse_Trait --> Reverse_Present = ON
-----------------------------------------------
-- A_Procedure_Declaration -> N_Subprogram_Declaration (*6*)
-- An_Ordinary_Trait --> No flag needed to determine the trait
-- -> N_Abstract_Subprogram_Declaration
-- An_Abstract_Trait --> No flag needed to determine the trait
-----------------------------------------------
-- A_Function_Declaration -> N_Subprogram_Declaration (*6*)
-- An_Ordinary_Trait --> No flag needed to determine the trait
-- -> N_Abstract_Subprogram_Declaration
-- An_Abstract_Trait --> No flag needed to determine the trait
-----------------------------------------------
-- A_Parameter_Specification -> N_Parameter_Specification (*4*)
-- Has no trait-related flags
--
-- An_Ordinary_Trait --> Nkind(Parameter_Type(Definition.Node))
-- /= N_Access_Definition
-- An_Access_Definition_Trait --> Nkind(Parameter_Type(Definition.Node))
-- = N_Access_Definition
-----------------------------------------------
--
-- Expected Definition_Kinds:
-- =========================
--
-- A_Component_Definition -> N_Subtype_Indication (*10*)
-- N_Identifier
-- N_Expanded_Name
-- An_Ordinary_Trait --> Aliased_Present set OFF in the PARENT node
-- An_Aliased_Trait --> Aliased_Present set ON in the PARENT nod
--
-- A_Private_Type_Definition -> N_Private_Type_Declaration (*1*)
-- The situation is just the same as for A_Private_Type_Declaration
-----------------------------------------------
-- A_Tagged_Private_Type_Definition-> N_Private_Type_Declaration (*1*)
-- The situation is just the same as for A_Private_Type_Declaration
-----------------------------------------------
-- A_Private_Extension_Definition -> N_Private_Extension_Declaration (*2*)
-- The situation is just the same as for N_Private_Extension_Declaration
-----------------------------------------------
--
-- Expected Type_Kinds:
-- ===================
--
-----------------------------------------------
-- A_Derived_Type_Definition -> N_Derived_Type_Definition (*7*)
-- An_Ordinary_Trait --> Abstract_Present = OFF
--
-- An_Abstract_Trait --> Abstract_Present = ON
-----------------------------------------------
-- A_Derived_Record_Extension_Definition -> N_Derived_Type_Definition (*7*)
-- An_Ordinary_Trait --> Abstract_Present = OFF
--
-- An_Abstract_Trait --> Abstract_Present = ON
-----------------------------------------------
-- A_Record_Type_Definition -> N_Record_Definition (*8*)
-- An_Ordinary_Trait --> Abstract_Present = OFF
-- Limited_Present = OFF
--
-- An_Abstract_Trait --> Abstract_Present = ON
-- Limited_Present = OFF
--
-- A_Limited_Trait --> Abstract_Present = OFF
-- Limited_Present = ON
--
-- An_Abstract_Limited_Trait --> Abstract_Present = ON
-- Limited_Present = ON
-----------------------------------------------
-- A_Tagged_Record_Type_Definition -> N_Record_Definition (*8*)
-- An_Ordinary_Trait --> Abstract_Present = OFF
-- Limited_Present = OFF
--
-- An_Abstract_Trait --> Abstract_Present = ON
-- Limited_Present = OFF
--
-- A_Limited_Trait --> Abstract_Present = OFF
-- Limited_Present = ON
--
-- An_Abstract_Limited_Trait --> Abstract_Present = ON
-- Limited_Present = ON
-----------------------------------------------
--
-- Expected Formal_Type_Kinds:
-- ==========================
--
-- A_Formal_Private_Type_Definition -> N_Formal_Private_Type_Definition
-- (*1*)
-- The situation is just the same as for A_Private_Type_Declaration
-----------------------------------------------
-- A_Formal_Tagged_Private_Type_Definition ->
-- N_Formal_Private_Type_Definition (*1*)
--
-- The situation is just the same as for A_Private_Type_Declaration
-----------------------------------------------
-- A_Formal_Derived_Type_Definition -> N_Formal_Derived_Type_Definition(*9*)
-- An_Ordinary_Trait --> Abstract_Present = OFF
-- Private_Present = OFF
--
-- An_Abstract_Trait --> Abstract_Present = ON
-- Private_Present = OFF
--
-- A_Private_Trait --> Abstract_Present = OFF
-- Private_Present = ON
--
-- An_Abstract_Private_Trait --> Abstract_Present = ON
-- Private_Present = ON
------------------------------------------------------------------------------
Arg_Node := Node (Element);
case Int_Kind (Element) is
-- expected argument:
when -- (*1*)
A_Private_Type_Declaration
| A_Private_Type_Definition
| A_Tagged_Private_Type_Definition
| A_Formal_Private_Type_Definition
| A_Formal_Tagged_Private_Type_Definition =>
Is_Abstract := Abstract_Present (Arg_Node);
Is_Limited := Limited_Present (Arg_Node);
if Is_Abstract and Is_Limited then
Result := An_Abstract_Limited_Private_Trait;
elsif Is_Abstract then
Result := An_Abstract_Private_Trait;
elsif Is_Limited then
Result := A_Limited_Private_Trait;
else
Result := A_Private_Trait;
end if;
when -- (*2*)
A_Private_Extension_Declaration
| A_Private_Extension_Definition =>
Is_Abstract := Abstract_Present (Arg_Node);
if Is_Abstract then
Result := An_Abstract_Private_Trait;
else
Result := A_Private_Trait;
end if;
when -- (*3*)
A_Variable_Declaration
| A_Constant_Declaration
| A_Deferred_Constant_Declaration =>
Is_Aliased := Aliased_Present (Arg_Node);
if Is_Aliased then
Result := An_Aliased_Trait;
end if;
when -- (*4*)
A_Discriminant_Specification
| A_Parameter_Specification =>
-- --|A2005 start
if A4G.A_Opt.ASIS_2005_Mode then
-- Ada/ASIS 2005 approach: we have to define
-- A_Null_Exclusion_Trait, and we can not define
-- An_Access_Definition_Trait in any reasonable way - now it
-- corresponds to An_Access_Definition Elements, and in case if
-- an access discriminant also contains null_exclusion, we
-- would need something like A_Null_Exclusion_Access_Trait,
-- that looks completely meaningless for ASIS 2005
if Null_Exclusion_Present (Arg_Node) then
Result := A_Null_Exclusion_Trait;
end if;
else
-- Old Ada/ASIS 95 approach: we may have
-- An_Access_Definition_Trait, but we do not have
-- A_Null_Exclusion_Trait
if Int_Kind (Element) = A_Discriminant_Specification then
Trait_Defining_Node := Discriminant_Type (Arg_Node);
else
Trait_Defining_Node := Parameter_Type (Arg_Node);
end if;
if Nkind (Trait_Defining_Node) = N_Access_Definition then
Result := An_Access_Definition_Trait;
end if;
end if;
-- --|A2005 end
when -- (*5*)
A_Loop_Parameter_Specification =>
if Reverse_Present (Arg_Node) then
Result := A_Reverse_Trait;
end if;
when -- (*6*)
A_Procedure_Declaration
| A_Function_Declaration =>
if Nkind (Arg_Node) = N_Abstract_Subprogram_Declaration then
Result := An_Abstract_Trait;
end if;
-- --|A2005 start
when
A_Formal_Procedure_Declaration
| A_Formal_Function_Declaration =>
if Nkind (Arg_Node) = N_Formal_Abstract_Subprogram_Declaration then
Result := An_Abstract_Trait;
end if;
-- --|A2005 end
when -- (*7*)
A_Derived_Type_Definition
| A_Derived_Record_Extension_Definition =>
if Abstract_Present (Arg_Node) then
Result := An_Abstract_Trait;
end if;
when -- (*8*)
A_Record_Type_Definition
| A_Tagged_Record_Type_Definition =>
Is_Abstract := Abstract_Present (Arg_Node);
Is_Limited := Limited_Present (Arg_Node);
if Is_Abstract and Is_Limited then
Result := An_Abstract_Limited_Trait;
elsif Is_Abstract then
Result := An_Abstract_Trait;
elsif Is_Limited then
Result := A_Limited_Trait;
end if;
when -- (*9*)
A_Formal_Derived_Type_Definition =>
Is_Abstract := Abstract_Present (Arg_Node);
Is_Limited := Limited_Present (Arg_Node);
Is_Private := Private_Present (Arg_Node);
if Is_Abstract and Is_Limited and Is_Private then
Result := An_Abstract_Limited_Private_Trait;
elsif Is_Abstract and Is_Limited then
Result := An_Abstract_Limited_Trait;
elsif Is_Abstract and Is_Private then
Result := An_Abstract_Private_Trait;
elsif Is_Limited and Is_Private then
Result := A_Limited_Private_Trait;
elsif Is_Abstract then
Result := An_Abstract_Trait;
elsif Is_Limited then
Result := A_Limited_Trait;
elsif Is_Private then
Result := A_Private_Trait;
end if;
when -- (*10*)
A_Component_Definition =>
if Aliased_Present (R_Node (Element)) then
Result := An_Aliased_Trait;
end if;
-- --|A2005 start
when A_With_Clause =>
Is_Limited := Limited_Present (Arg_Node);
Is_Private := Private_Present (Arg_Node);
if Is_Limited then
if Is_Private then
Result := A_Limited_Private_Trait;
else
Result := A_Limited_Trait;
end if;
elsif Is_Private then
Result := A_Private_Trait;
end if;
when Internal_Access_Type_Kinds =>
if Null_Exclusion_Present (Arg_Node) then
Result := A_Null_Exclusion_Trait;
end if;
when Internal_Access_Definition_Kinds =>
if Present (Sinfo.Access_To_Subprogram_Definition (Arg_Node)) then
Arg_Node := Sinfo.Access_To_Subprogram_Definition (Arg_Node);
end if;
if Null_Exclusion_Present (Arg_Node) then
Result := A_Null_Exclusion_Trait;
end if;
when A_Subtype_Indication =>
Arg_Node := Parent (Arg_Node);
if Null_Exclusion_Present (Arg_Node) then
Result := A_Null_Exclusion_Trait;
end if;
-- --|A2005 end
when others =>
-- unexpected argument:
Result := Not_A_Trait;
end case;
return Result;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Element,
Outer_Call => Package_Name & "Trait_Kind");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Trait_Kind",
Ex => Ex,
Arg_Element => Element);
end Trait_Kind;
------------------------------------------------------------------------------
function Declaration_Origin
(Declaration : Asis.Declaration)
return Asis.Declaration_Origins
is
begin
-- The implementation may require revising when the semantic queries
-- and implicit elements are implemented.
Check_Validity (Declaration, Package_Name & "Declaration_Origin");
if Int_Kind (Declaration) not in Internal_Declaration_Kinds then
return Not_A_Declaration_Origin;
elsif not Is_From_Implicit (Declaration) then
return An_Explicit_Declaration;
elsif Is_From_Inherited (Declaration) then
return An_Implicit_Inherited_Declaration;
else
return An_Implicit_Predefined_Declaration;
end if;
end Declaration_Origin;
-----------------------------------------------------------------------------
function Mode_Kind
(Declaration : Asis.Declaration)
return Asis.Mode_Kinds
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Declaration);
Arg_Node : Node_Id;
begin
Check_Validity (Declaration, Package_Name & "Mode_Kind");
if not (Arg_Kind = A_Parameter_Specification or else
Arg_Kind = A_Formal_Object_Declaration)
then
return Not_A_Mode;
end if;
Arg_Node := Node (Declaration);
if In_Present (Arg_Node) and then Out_Present (Arg_Node) then
return An_In_Out_Mode;
elsif In_Present (Arg_Node) then
return An_In_Mode;
elsif Out_Present (Arg_Node) then
return An_Out_Mode;
else
return A_Default_In_Mode;
end if;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Declaration,
Outer_Call => Package_Name & "Mode_Kind");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Mode_Kind",
Ex => Ex,
Arg_Element => Declaration);
end Mode_Kind;
-----------------------------------------------------------------------------
function Default_Kind
(Declaration : Asis.Generic_Formal_Parameter)
return Asis.Subprogram_Default_Kinds
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Declaration);
Arg_Node : Node_Id;
begin
Check_Validity (Declaration, Package_Name & "Default_Kind");
Arg_Node := Node (Declaration);
if not (Arg_Kind = A_Formal_Procedure_Declaration or else
Arg_Kind = A_Formal_Function_Declaration)
then
return Not_A_Default;
elsif Box_Present (Arg_Node) then
return A_Box_Default;
elsif Present (Default_Name (Arg_Node)) then
return A_Name_Default;
elsif Nkind (Specification (Arg_Node)) = N_Procedure_Specification
and then
Null_Present (Specification (Arg_Node))
then
return A_Null_Default;
else
return A_Nil_Default;
end if;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Declaration,
Outer_Call => Package_Name & "Default_Kind");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Default_Kind",
Ex => Ex,
Arg_Element => Declaration);
end Default_Kind;
-----------------------------------------------------------------------------
function Definition_Kind
(Definition : Asis.Definition)
return Asis.Definition_Kinds
is
begin
Check_Validity (Definition, Package_Name & "Definition_Kind");
return Definition_Kind_From_Internal (Int_Kind (Definition));
end Definition_Kind;
-----------------------------------------------------------------------------
function Type_Kind
(Definition : Asis.Type_Definition)
return Asis.Type_Kinds
is
begin
Check_Validity (Definition, Package_Name & "Type_Kind");
return Type_Kind_From_Internal (Int_Kind (Definition));
end Type_Kind;
-----------------------------------------------------------------------------
function Formal_Type_Kind
(Definition : Asis.Type_Definition)
return Asis.Formal_Type_Kinds
is
begin
Check_Validity (Definition, Package_Name & "Formal_Type_Kind");
return Formal_Type_Kind_From_Internal (Int_Kind (Definition));
end Formal_Type_Kind;
-----------------------------------------------------------------------------
function Access_Type_Kind
(Definition : Asis.Type_Definition)
return Asis.Access_Type_Kinds
is
begin
Check_Validity (Definition, Package_Name & "Access_Type_Kind");
return Access_Type_Kind_From_Internal (Int_Kind (Definition));
end Access_Type_Kind;
-----------------------------------------------------------------------------
function Root_Type_Kind
(Definition : Asis.Type_Definition)
return Asis.Root_Type_Kinds
is
begin
Check_Validity (Definition, Package_Name & "Root_Type_Kind");
return Root_Type_Kind_From_Internal (Int_Kind (Definition));
end Root_Type_Kind;
-----------------------------------------------------------------------------
function Constraint_Kind
(Definition : Asis.Definition)
return Asis.Constraint_Kinds
is
begin
Check_Validity (Definition, Package_Name & "Constraint_Kind");
return Constraint_Kind_From_Internal (Int_Kind (Definition));
end Constraint_Kind;
-----------------------------------------------------------------------------
function Discrete_Range_Kind
(Definition : Asis.Definition)
return Asis.Discrete_Range_Kinds
is
begin
Check_Validity (Definition, "Discrete_Range_Kind.Expression_Kind");
return Discrete_Range_Kind_From_Internal (Int_Kind (Definition));
end Discrete_Range_Kind;
-----------------------------------------------------------------------------
function Expression_Kind
(Expression : Asis.Expression)
return Asis.Expression_Kinds
is
begin
Check_Validity (Expression, Package_Name & "Expression_Kind");
return Expression_Kind_From_Internal (Int_Kind (Expression));
end Expression_Kind;
-----------------------------------------------------------------------------
function Operator_Kind
(Element : Asis.Element)
return Asis.Operator_Kinds
is
begin
Check_Validity (Element, Package_Name & "Operator_Kind");
return Operator_Kind_From_Internal (Int_Kind (Element));
end Operator_Kind;
-----------------------------------------------------------------------------
function Attribute_Kind
(Expression : Asis.Expression)
return Asis.Attribute_Kinds
is
begin
Check_Validity (Expression, Package_Name & "Attribute_Kind");
return Attribute_Kind_From_Internal (Int_Kind (Expression));
end Attribute_Kind;
-----------------------------------------------------------------------------
function Association_Kind
(Association : Asis.Association)
return Asis.Association_Kinds
is
begin
Check_Validity (Association, Package_Name & "Association_Kind");
return Association_Kind_From_Internal (Int_Kind (Association));
end Association_Kind;
-----------------------------------------------------------------------------
function Statement_Kind
(Statement : Asis.Statement)
return Asis.Statement_Kinds
is
begin
Check_Validity (Statement, Package_Name & "Statement_Kind");
return Statement_Kind_From_Internal (Int_Kind (Statement));
end Statement_Kind;
-----------------------------------------------------------------------------
function Path_Kind (Path : Asis.Path) return Asis.Path_Kinds is
begin
Check_Validity (Path, Package_Name & "Clause_Kind");
return Path_Kind_From_Internal (Int_Kind (Path));
end Path_Kind;
-----------------------------------------------------------------------------
function Clause_Kind (Clause : Asis.Clause) return Asis.Clause_Kinds is
begin
Check_Validity (Clause, Package_Name & "Clause_Kind");
return Clause_Kind_From_Internal (Int_Kind (Clause));
end Clause_Kind;
-----------------------------------------------------------------------------
function Representation_Clause_Kind
(Clause : Asis.Clause)
return Asis.Representation_Clause_Kinds
is
begin
Check_Validity (Clause, Package_Name & "Representation_Clause_Kind");
return Representation_Clause_Kind_From_Internal (Int_Kind (Clause));
end Representation_Clause_Kind;
-----------------------------------------------------------------------------
function Is_Nil (Right : Asis.Element) return Boolean is
begin
return Right = Asis.Nil_Element;
end Is_Nil;
-----------------------------------------------------------------------------
function Is_Nil (Right : Asis.Element_List) return Boolean is
begin
return Right'Length = 0;
end Is_Nil;
-----------------------------------------------------------------------------
function Is_Equal
(Left : Asis.Element;
Right : Asis.Element)
return Boolean
is
C_Left : Context_Id;
C_Right : Context_Id;
U_Left : Unit_Id;
U_Right : Unit_Id;
CU_Left : Compilation_Unit;
CU_Right : Compilation_Unit;
N_Left : Node_Id;
N_Right : Node_Id;
Result : Boolean := False;
begin
Check_Validity (Left, Package_Name & "Is_Equal");
Check_Validity (Right, Package_Name & "Is_Equal");
-- To minimize the performance penalties, we are trying to filter
-- out simple cases first. These are (more or less) simple cases
-- when the function should return False
-- First, checking the case when one of the arguments is Nil_Element
if Int_Kind (Left) = Not_An_Element or else
Int_Kind (Right) = Not_An_Element
then
return (Int_Kind (Left) = Int_Kind (Right));
end if;
-- Then, we are checking if the basic properties of the argument are
-- the same
if not (Special_Case (Left) = Special_Case (Right) and then
Int_Kind (Left) = Int_Kind (Right) and then
Character_Code (Left) = Character_Code (Right) and then
Is_From_Implicit (Left) = Is_From_Implicit (Right) and then
Is_From_Inherited (Left) = Is_From_Inherited (Right) and then
Is_From_Instance (Left) = Is_From_Instance (Right) and then
Normalization_Case (Left) = Normalization_Case (Right) and then
Parenth_Count (Left) = Parenth_Count (Right))
then
return False;
end if;
-- Now, checking that arguments are from the same Ada unit
C_Left := Encl_Cont_Id (Left);
U_Left := Encl_Unit_Id (Left);
C_Right := Encl_Cont_Id (Right);
U_Right := Encl_Unit_Id (Right);
if C_Left = C_Right then
if U_Left /= U_Right then
return False;
end if;
else
-- This case is a bit more complicated: we have to compare names
-- and time stamps of enclosed units
if U_Left = Standard_Id or else U_Right = Standard_Id then
if U_Left /= U_Right then
return False;
end if;
else
if Time_Stamp (C_Left, U_Left) /=
Time_Stamp (C_Right, U_Right)
then
return False;
end if;
-- Here we have to compare unit names. Let's check unit kind
-- and class first
CU_Left := Encl_Unit (Left);
CU_Right := Encl_Unit (Right);
if not (Kind (CU_Left) = Kind (CU_Right) and then
Class (CU_Left) = Class (CU_Right))
then
return False;
end if;
-- And now - unit names. This case does not seem to be
-- encountered very often, so we simply use Unit_Full_Name
-- query to avoid manual Context switching:
if Asis.Compilation_Units.Unit_Full_Name (CU_Left) /=
Asis.Compilation_Units.Unit_Full_Name (CU_Right)
then
return False;
end if;
end if;
end if;
-- And if we are here, we are in the following situation: both Left
-- and Right are non-nil Elements, they have all their properties
-- the same and they are from the same Compilation_Unit.
-- And now we have to check if they represents the same construct.
if U_Left = Standard_Id or else
(C_Left = C_Right
and then
Encl_Tree (Left) = Encl_Tree (Right))
then
-- In Standard, we may just compare the node values.
-- In the same tree we may do the same
return R_Node (Left) = R_Node (Right);
end if;
-- In case of configuration pragmas and components thereof we are very
-- conservative - two elements can be equal only if there are from
-- the same tree. The reason for this is that in ASIS we have no
-- means to control that the content of the configuration files
-- is the same in different trees.
if Special_Case (Left) = Configuration_File_Pragma then
return Encl_Tree (Left) = Encl_Tree (Right) and then
R_Node (Left) = R_Node (Right);
end if;
-- And if we are here, we have to compare Elements obtained from
-- different trees
if not Is_From_Instance (Left) then
-- May be, we have to use source-trace-based approach for
-- all cases....????
return Rel_Sloc (Left) = Rel_Sloc (Right);
end if;
-- If we are here, we have to compare node traces.
Reset_Context (C_Left);
N_Left := R_Node (Left);
Create_Node_Trace (N_Left);
Reset_Context (C_Right);
N_Right := R_Node (Right);
Result := True;
for J in Node_Trace.First .. Node_Trace.Last loop
if No (N_Right) or else
not Is_Equal (N_Right, Node_Trace.Table (J))
then
Result := False;
exit;
end if;
N_Right := A4G.Asis_Tables.Enclosing_Scope (N_Right);
end loop;
return Result;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information (Outer_Call => Package_Name & "Is_Equal");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Is_Equal",
Ex => Ex,
Arg_Element => Left,
Arg_Element_2 => Right);
end Is_Equal;
-----------------------------------------------------------------------------
function Is_Identical
(Left : Asis.Element;
Right : Asis.Element)
return Boolean
is
C_Left : Context_Id;
C_Right : Context_Id;
begin
Check_Validity (Left, Package_Name & "Is_Identical");
Check_Validity (Right, Package_Name & "Is_Identical");
C_Left := Encl_Cont_Id (Left);
C_Right := Encl_Cont_Id (Right);
if C_Left /= C_Right then
return False;
else
return Is_Equal (Left, Right);
end if;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information (Outer_Call => Package_Name & "Is_Identical");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Is_Identical",
Ex => Ex,
Arg_Element => Left,
Arg_Element_2 => Right);
end Is_Identical;
------------------------------------------------------------------------------
-- The general principle of the implementation
-- of the Is_Part_Of_... functions:
--
-- These functions simply returns the corresponding flag value from the
-- Element passed as their argument. All necessary work should be done
-- during the creation of the Element when these flags are set
--
-- All of them (as well as the function Declaration_Origin above) will
-- require revisiting during semantic queries implementation
------------------------------------------------------------------------------
function Is_Part_Of_Implicit (Element : Asis.Element) return Boolean is
begin
Check_Validity (Element, Package_Name & "Is_Part_Of_Implicit");
return Is_From_Implicit (Element) or else
Normalization_Case (Element) in Normalized_Association;
-- for normalized associations Is_Part_Of_Implicit is not set ON ???
-- unless the association is from some enclosing implicit construct. ???
end Is_Part_Of_Implicit;
-----------------------------------------------------------------------------
function Is_Part_Of_Inherited (Element : Asis.Element) return Boolean is
begin
Check_Validity (Element, Package_Name & "Is_Part_Of_Inherited");
return Is_From_Inherited (Element);
end Is_Part_Of_Inherited;
-----------------------------------------------------------------------------
function Is_Part_Of_Instance (Element : Asis.Element) return Boolean is
begin
Check_Validity (Element, Package_Name & "Is_Part_Of_Instance");
return Is_From_Instance (Element);
end Is_Part_Of_Instance;
-----------------------------------------------------------------------------
function Enclosing_Element
(Element : Asis.Element)
return Asis.Element
is
Argument_Kind : constant Internal_Element_Kinds := Int_Kind (Element);
Arg_Spec_Case : constant Special_Cases := Special_Case (Element);
begin
Check_Validity (Element, Package_Name & "Enclosing_Element");
if Argument_Kind = Not_An_Element then
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name & "Enclosing_Element",
Wrong_Kind => Argument_Kind);
end if;
-- if the argument is an expanded generic declaration we have
-- to return the corresponding instantiation:
if Arg_Spec_Case in Expanded_Spec then
return Corresponding_Instantiation (Element);
end if;
-- if the argument is from an expanded generic declaration,
-- we have to be careful when coming from some top-level component
-- of the expanded declaration to the declaration itself - we
-- need to set the Special_Case field properly
if Is_From_Instance (Element) and then
not Is_From_Implicit (Element)
then
if Arg_Spec_Case in
Dummy_Base_Attribute_Designator .. Dummy_Class_Attribute_Prefix
then
declare
Result : Asis.Element := Element;
begin
Set_Special_Case (Result, Not_A_Special_Case);
if Arg_Spec_Case = Dummy_Class_Attribute_Designator
or else
Arg_Spec_Case = Dummy_Class_Attribute_Prefix
then
Set_Int_Kind (Result, A_Class_Attribute);
elsif Arg_Spec_Case = Dummy_Base_Attribute_Designator
or else
Arg_Spec_Case = Dummy_Base_Attribute_Prefix
then
Set_Int_Kind (Result, A_Base_Attribute);
end if;
return Result;
end;
else
return Enclosing_For_Explicit_Instance_Component (Element);
end if;
end if;
if not (Is_From_Implicit (Element) or else
Is_From_Inherited (Element)) -- ???
then
return Enclosing_Element_For_Explicit (Element);
else
return Enclosing_Element_For_Implicit (Element);
end if;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Element,
Outer_Call => Package_Name & "Enclosing_Element");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Enclosing_Element",
Ex => Ex,
Arg_Element => Element);
end Enclosing_Element;
------------------------------------------------------------------------------
function Enclosing_Element
(Element : Asis.Element;
Expected_Enclosing_Element : Asis.Element)
return Asis.Element
is
begin
Check_Validity
(Element,
Package_Name & "Enclosing_Element (the Element parameter)");
Check_Validity
(Expected_Enclosing_Element,
Package_Name &
"Enclosing_Element (the Expected_Enclosing_Element parameter)");
return Enclosing_Element (Element);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Element,
Outer_Call => Package_Name & "Enclosing_Element");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Enclosing_Element",
Ex => Ex,
Arg_Element => Element,
Arg_Element_2 => Expected_Enclosing_Element);
end Enclosing_Element;
-----------------------------------------------------------------------------
function Pragmas
(The_Element : Asis.Element)
return Asis.Pragma_Element_List
is
-- This implementation is based on the following statement in the function
-- documentation:
--
-- This interface returns exactly those pragmas that would be returned by the
-- various interfaces, that accept these same argument kinds, and that
-- return Declaration_Lists and Statement_Lists, where the inclusion of
-- Pragmas is controlled by an Include_Pragmas parameter.
--
-- The general idea of the implementation is straightforward - to get
-- the "full" Element_List by the call of the corresponding interface
-- with Include_Pragmas => True, and then select only A_Pragma elements
-- from this intermediate result.
--
-- Some loss of effectiveness could be considered as the disadvantage of
-- this approach, but its advantages are:
--
-- - it saves implementation efforts;
-- - it allows to check whether the documentation fragment cited above
-- is really correct;
-- - it saves the debugging efforts on the first prototyping stage
-- (there is no need for the special debugging of this function
-- if other ASIS interfaces used for its implementation work correctly);
-- - it is more convenient for incremental development
-- - it yields the vendor-independent implementation of this function
Context_Internal_Kind : Internal_Element_Kinds;
function Extract_Pragmas
(List : Asis.Element_List)
return Asis.Pragma_Element_List;
-- function extracts Elements of A_Pragma kind from its
-- List parameter and returns the new List constructed from these
-- Pragma Elements (in their order of appearance) as its result
function Extract_Pragmas
(List : Asis.Element_List)
return Asis.Pragma_Element_List
is
Pragma_List : Asis.Pragma_Element_List (List'Range);
Pragma_List_Actual_Lenght : Asis.ASIS_Integer := 0;
begin
for I in List'Range loop
if Element_Kind (List (I)) = A_Pragma then
Pragma_List_Actual_Lenght := Pragma_List_Actual_Lenght + 1;
Pragma_List (Pragma_List_Actual_Lenght) := List (I);
end if;
end loop;
return Pragma_List (1 .. Pragma_List_Actual_Lenght);
end Extract_Pragmas;
begin -- Pragmas
Check_Validity (The_Element, Package_Name & "Pragmas");
Context_Internal_Kind := Int_Kind (The_Element);
if not -- Appropriate Element_Kinds:
(Context_Internal_Kind in Internal_Path_Kinds
or else Context_Internal_Kind = An_Exception_Handler
-- Appropriate Declaration_Kinds:
or else Context_Internal_Kind = A_Procedure_Body_Declaration
or else Context_Internal_Kind = A_Function_Body_Declaration
or else Context_Internal_Kind = A_Package_Declaration
or else Context_Internal_Kind = A_Package_Body_Declaration
or else Context_Internal_Kind = A_Task_Body_Declaration
or else Context_Internal_Kind = A_Protected_Body_Declaration
or else Context_Internal_Kind = An_Entry_Body_Declaration
or else Context_Internal_Kind = A_Generic_Procedure_Declaration
or else Context_Internal_Kind = A_Generic_Function_Declaration
or else Context_Internal_Kind = A_Generic_Package_Declaration
-- Appropriate Definition_Kinds:
or else Context_Internal_Kind = A_Record_Definition
or else Context_Internal_Kind = A_Variant_Part
or else Context_Internal_Kind = A_Variant
or else Context_Internal_Kind = A_Task_Definition
or else Context_Internal_Kind = A_Protected_Definition
-- Appropriate Statement_Kinds:
or else Context_Internal_Kind = A_Loop_Statement
or else Context_Internal_Kind = A_While_Loop_Statement
or else Context_Internal_Kind = A_For_Loop_Statement
or else Context_Internal_Kind = A_Block_Statement
or else Context_Internal_Kind = An_Accept_Statement
-- Representation_Clause_Kinds:
or else Context_Internal_Kind = A_Record_Representation_Clause)
then
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name & "Pragmas",
Wrong_Kind => Context_Internal_Kind);
end if;
case Context_Internal_Kind is
-- Appropriate Element_Kinds:
when Internal_Path_Kinds =>
-- A_Path: (pragmas from the statement list)
return Extract_Pragmas (
Asis.Statements.Sequence_Of_Statements (
Path => The_Element,
Include_Pragmas => True));
when An_Exception_Handler =>
-- (pragmas from the statement list)
return Extract_Pragmas (
Asis.Statements.Handler_Statements (
Handler => The_Element,
Include_Pragmas => True));
-- Appropriate Declaration_Kinds:
when A_Procedure_Body_Declaration -- (pragmas from decl region
| A_Function_Body_Declaration -- + statements)
| A_Package_Body_Declaration -- !! SEE OPEN_PROBLEMS.1 BELOW
| A_Task_Body_Declaration
| An_Entry_Body_Declaration =>
return (Extract_Pragmas (
Asis.Declarations.Body_Declarative_Items (
Declaration => The_Element,
Include_Pragmas => True))
&
Extract_Pragmas (
Asis.Declarations.Body_Statements (
Declaration => The_Element,
Include_Pragmas => True)));
when A_Package_Declaration =>
-- (pragmas from visible + private decl regions)
return (Extract_Pragmas (
Asis.Declarations.Visible_Part_Declarative_Items (
Declaration => The_Element,
Include_Pragmas => True))
&
Extract_Pragmas (
Asis.Declarations.Private_Part_Declarative_Items (
Declaration => The_Element,
Include_Pragmas => True)));
when A_Protected_Body_Declaration =>
-- (pragmas from decl region)
return Extract_Pragmas (
Asis.Declarations.Protected_Operation_Items (
Declaration => The_Element,
Include_Pragmas => True));
when A_Generic_Procedure_Declaration
| A_Generic_Function_Declaration =>
-- (pragmas from formal decl region
return Extract_Pragmas (
Asis.Declarations.Generic_Formal_Part (
Declaration => The_Element,
Include_Pragmas => True));
when A_Generic_Package_Declaration =>
-- (pragmas from formal + visible + private decl regions)
return (Extract_Pragmas (
Asis.Declarations.Generic_Formal_Part (
Declaration => The_Element,
Include_Pragmas => True))
&
Extract_Pragmas (
Asis.Declarations.Visible_Part_Declarative_Items (
Declaration => The_Element,
Include_Pragmas => True))
&
Extract_Pragmas (
Asis.Declarations.Private_Part_Declarative_Items (
Declaration => The_Element,
Include_Pragmas => True)));
-- Appropriate Definition_Kinds:
when A_Record_Definition
| A_Variant =>
-- (pragmas from the component list)
return Extract_Pragmas (
Asis.Definitions.Record_Components (
Definition => The_Element,
Include_Pragmas => True));
when A_Variant_Part =>
-- (pragmas from between variants)
return Extract_Pragmas (
Asis.Definitions.Variants (
Variant_Part => The_Element,
Include_Pragmas => True));
when A_Task_Definition
| A_Protected_Definition =>
-- (pragmas from visible + private decl regions)
return (Extract_Pragmas (
Asis.Definitions.Visible_Part_Items (
Definition => The_Element,
Include_Pragmas => True))
&
Extract_Pragmas (
Asis.Definitions.Private_Part_Items (
Definition => The_Element,
Include_Pragmas => True)));
-- Appropriate Statement_Kinds:
when A_Loop_Statement
| A_While_Loop_Statement
| A_For_Loop_Statement =>
-- (pragmas from statement list)
return Extract_Pragmas (
Asis.Statements.Loop_Statements (
Statement => The_Element,
Include_Pragmas => True));
when A_Block_Statement =>
-- (pragmas from decl region + statements)
return (Extract_Pragmas (
Asis.Statements.Block_Declarative_Items (
Statement => The_Element,
Include_Pragmas => True))
&
Extract_Pragmas (
Asis.Statements.Block_Statements (
Statement => The_Element,
Include_Pragmas => True)));
when An_Accept_Statement =>
-- (pragmas from statement list+ pragma immediately preceding
-- the first exception handler, if any)
-- !! SEE OPEN_PROBLEMS.2 BELOW
return (Extract_Pragmas (
Asis.Statements.Accept_Body_Statements (
Statement => The_Element,
Include_Pragmas => True))
&
Extract_Pragmas (
Asis.Statements.Accept_Body_Exception_Handlers (
Statement => The_Element,
Include_Pragmas => True)));
-- Appropriate Representation_Clause_Kinds:
when A_Record_Representation_Clause =>
-- (pragmas from component specifications)
return Extract_Pragmas (
Asis.Clauses.Component_Clauses (
Clause => The_Element,
Include_Pragmas => True));
when others =>
-- Should never been reached !!!
raise Internal_Implementation_Error;
end case;
exception
when ASIS_Inappropriate_Element =>
Add_Call_Information (Outer_Call => Package_Name & "Pragmas");
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => The_Element,
Outer_Call => Package_Name & "Pragmas");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Pragmas",
Ex => Ex,
Arg_Element => The_Element);
end Pragmas;
------------------------------------------------------------------------------
-- PARTIALLY IMPLEMENTED
---------------------------
-- Corresponding_Pragmas --
---------------------------
function Corresponding_Pragmas
(Element : Asis.Element)
return Asis.Pragma_Element_List
is
Next_Rep_Node : Node_Id;
Next_Pragma_Node : Node_Id := Empty;
Arg_Node : Node_Id;
begin
Check_Validity (Element, Package_Name & "Corresponding_Pragmas");
if not (Element_Kind (Element) = A_Declaration
or else
Element_Kind (Element) = A_Statement)
then
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name & "Corresponding_Pragmas",
Wrong_Kind => Int_Kind (Element));
end if;
-- At the moment, this is a partial implementation:
-- - for A_Statement argument Nil_Element_List is always returned;
-- - for A_Declaration argument that represents
-- - for A_Declaration argument that corresponds to a unit declaration
-- from the compilation unit or to the proper body of subunit, nothing
-- is returned.
-- - implicit inherited declarations are not properly processed
-- - the result list contains representation pragmas only
if Element_Kind (Element) = A_Statement then
return Nil_Element_List;
else
Asis_Element_Table.Init;
case Declaration_Kind (Element) is
when A_Procedure_Declaration |
A_Function_Declaration |
A_Procedure_Body_Declaration |
A_Function_Body_Declaration |
A_Procedure_Renaming_Declaration |
A_Function_Renaming_Declaration |
An_Entry_Declaration |
A_Procedure_Body_Stub |
A_Function_Body_Stub |
A_Procedure_Instantiation |
A_Function_Instantiation =>
-- Overloadable entities, pragmas are not chained.
-- At the moment we can process only explicit stuff.
-- First, collect Pre- and Postcondition pragmas, if any.
Arg_Node := R_Node (Element);
case Declaration_Kind (Element) is
when A_Procedure_Declaration |
A_Function_Declaration =>
if Is_List_Member (Arg_Node) then
Next_Pragma_Node := Next (Arg_Node);
else
-- Spec of a library-level subprogram
Next_Pragma_Node := Aux_Decls_Node (Parent (Arg_Node));
if Present (Pragmas_After (Next_Pragma_Node)) then
Next_Pragma_Node :=
First (Pragmas_After (Next_Pragma_Node));
else
Next_Pragma_Node := Empty;
end if;
end if;
when A_Procedure_Body_Declaration |
A_Function_Body_Declaration =>
Next_Pragma_Node := First (Sinfo.Declarations (Arg_Node));
while Present (Next_Pragma_Node)
and then
not Comes_From_Source
(Original_Node (Next_Pragma_Node))
loop
Next_Pragma_Node := Next (Next_Pragma_Node);
end loop;
when others => null;
end case;
while Present (Next_Pragma_Node)
and then
Nkind (Next_Pragma_Node) = N_Pragma
loop
if Pragma_Name (Original_Node (Next_Pragma_Node)) in
Name_Postcondition .. Name_Precondition
then
Asis_Element_Table.Append
(Node_To_Element_New
(Starting_Element => Element,
Node => Next_Pragma_Node));
end if;
Next_Pragma_Node := Next (Next_Pragma_Node);
while Present (Next_Pragma_Node)
and then
not Comes_From_Source (Original_Node (Next_Pragma_Node))
loop
Next_Pragma_Node := Next (Next_Pragma_Node);
end loop;
end loop;
-- Now - general processing of all the other pragmas that can be
-- semantically associated with the argument
if not Is_Part_Of_Implicit (Element)
and then
Enclosing_Element (Element) /= Nil_Element
then
case Nkind (Arg_Node) is
when N_Subprogram_Declaration |
N_Abstract_Subprogram_Declaration |
N_Subprogram_Body |
N_Subprogram_Renaming_Declaration |
N_Subprogram_Body_Stub =>
Arg_Node := Defining_Unit_Name (Specification (Arg_Node));
when N_Entry_Declaration =>
Arg_Node := Defining_Identifier (Arg_Node);
when N_Procedure_Instantiation |
N_Function_Instantiation =>
Arg_Node := Defining_Unit_Name (Arg_Node);
when others =>
pragma Assert (False);
null;
end case;
Next_Rep_Node := R_Node (Element);
Next_Rep_Node := Next (Next_Rep_Node);
while Present (Next_Rep_Node) loop
if Nkind (Next_Rep_Node) = N_Pragma
and then
Is_Applied_To (Next_Rep_Node, Arg_Node)
then
Asis_Element_Table.Append
(Node_To_Element_New
(Starting_Element => Element,
Node => Next_Rep_Node));
end if;
Next_Rep_Node := Next (Next_Rep_Node);
end loop;
-- In case if the ergument declaration is in the visible part
-- of the package spec, traverse the private part:
Next_Rep_Node := Parent (R_Node (Element));
if Nkind (Next_Rep_Node) = N_Package_Specification
and then
List_Containing (R_Node (Element)) =
Visible_Declarations (Next_Rep_Node)
then
Next_Rep_Node :=
First (Private_Declarations (Next_Rep_Node));
while Present (Next_Rep_Node) loop
if Nkind (Next_Rep_Node) = N_Pragma
and then
Is_Applied_To (Next_Rep_Node, Arg_Node)
then
Asis_Element_Table.Append
(Node_To_Element_New
(Starting_Element => Element,
Node => Next_Rep_Node));
end if;
Next_Rep_Node := Next (Next_Rep_Node);
end loop;
end if;
end if;
when others =>
-- Non-overloadable entity. This implementation is not good,
-- but we have to deal with an error in query definition -
-- the query should actually be applied to an entity, but not
-- to a declaration that can define more then one entity.
declare
Decl_Names : constant Element_List := Names (Element);
Next_Name : Asis.Element;
begin
for J in Decl_Names'Range loop
Next_Name := Decl_Names (J);
if Defining_Name_Kind (Next_Name) =
A_Defining_Expanded_Name
then
Next_Name := Defining_Selector (Next_Name);
end if;
Next_Rep_Node := First_Rep_Item (R_Node (Next_Name));
while Present (Next_Rep_Node) loop
if Nkind (Next_Rep_Node) = N_Pragma then
Asis_Element_Table.Append
(Node_To_Element_New
(Starting_Element => Element,
Node => Next_Rep_Node));
end if;
Next_Rep_Node := Next_Rep_Item (Next_Rep_Node);
end loop;
end loop;
end;
end case;
return Asis.Pragma_Element_List
(Asis_Element_Table.Table (1 .. Asis_Element_Table.Last));
end if;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Element,
Outer_Call => Package_Name & "Corresponding_Pragmas");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Corresponding_Pragmas",
Ex => Ex,
Arg_Element => Element);
end Corresponding_Pragmas;
-----------------------------------------------------------------------------
function Pragma_Name_Image
(Pragma_Element : Asis.Pragma_Element)
return Wide_String
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Pragma_Element);
Arg_Node : Node_Id;
Image_Start : Source_Ptr;
Image_End : Source_Ptr;
begin
Check_Validity (Pragma_Element, Package_Name & "Pragma_Name_Image");
if Arg_Kind not in Internal_Pragma_Kinds then
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name & "Pragma_Name_Image",
Wrong_Kind => Arg_Kind);
end if;
Arg_Node := Node (Pragma_Element);
Image_Start := Next_Identifier (Sloc (Arg_Node) + 5);
Image_End := Get_Word_End (P => Image_Start,
In_Word => In_Identifier'Access);
return Get_Wide_Word (Image_Start, Image_End);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Pragma_Element,
Outer_Call => Package_Name & "Pragma_Name_Image");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Pragma_Name_Image",
Ex => Ex,
Arg_Element => Pragma_Element);
end Pragma_Name_Image;
-----------------------------------------------------------------------------
function Pragma_Argument_Associations
(Pragma_Element : Asis.Pragma_Element)
return Asis.Association_List
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Pragma_Element);
Arg_Node : Node_Id;
begin
Check_Validity
(Pragma_Element, Package_Name & "Pragma_Argument_Associations");
if Arg_Kind not in Internal_Pragma_Kinds then
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name & "Pragma_Argument_Associations",
Wrong_Kind => Arg_Kind);
end if;
Arg_Node := Node (Pragma_Element);
return N_To_E_List_New
(List => Pragma_Argument_Associations (Arg_Node),
Internal_Kind => A_Pragma_Argument_Association,
Starting_Element => Pragma_Element);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Pragma_Element,
Outer_Call => Package_Name & "Pragma_Argument_Associations");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Pragma_Argument_Associations",
Ex => Ex,
Arg_Element => Pragma_Element);
end Pragma_Argument_Associations;
-----------------------------------------------------------------------------
function Debug_Image (Element : Asis.Element) return Wide_String is
LT : String renames A4G.A_Types.ASIS_Line_Terminator;
begin
Check_Validity (Element, Package_Name & "Debug_Image");
Debug_String (Element);
return To_Wide_String (
LT & "Element Debug_Image: " & LT &
Debug_Buffer (1 .. Debug_Buffer_Len));
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Element,
Outer_Call => Package_Name & "Debug_Image");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Debug_Image",
Ex => Ex,
Arg_Element => Element);
end Debug_Image;
-----------------------------------------------------------------------------
-- The following constants are used in the computation of hash values for
-- Elements which are not from Standard:
Line_Pos : constant Natural := 6;
Bit_Pos : constant Natural := 1;
Impl_Pos : Natural renames Bit_Pos;
Inh_Pos : Natural renames Bit_Pos;
Inst_Pos : Natural renames Bit_Pos;
Kind_Pos : constant Natural := 8;
Col_Pos : constant Natural := 4;
Name_Pos : constant Natural := 9;
Spec_Pos : constant Natural := 2;
Max_Names : constant Unsigned_32 := 2 ** Name_Pos;
Max_Cols : constant Unsigned_32 := 2 ** Col_Pos;
Max_Kinds : constant Unsigned_32 := 2 ** Kind_Pos;
Max_Lines : constant Unsigned_32 := 2 ** Line_Pos;
Max_Specs : constant Unsigned_32 := 2 ** Spec_Pos;
subtype Unit_Name_Hash_Range is Integer range 0 .. Integer (Max_Names) - 1;
function Ada_Name_Hash is new GNAT.HTable.Hash (Unit_Name_Hash_Range);
function Hash (Element : Asis.Element) return Asis.ASIS_Integer is
N : Node_Id;
S : Source_Ptr;
L : Physical_Line_Number;
C : Column_Number;
Result : Unsigned_32 := 0;
function Get_Ada_Name return String;
-- Returns Ada name of the Element's enclosing unit appended with 'S' if
-- the unit is a spec unit and with 'B' if it is a body unit. Returns
-- null string for Nil_Element
function Get_Ada_Name return String is
CU : Asis.Compilation_Unit;
Spec_Or_Body : Character := 'B';
begin
if Is_Nil (Element) then
return "";
else
CU := Enclosing_Compilation_Unit (Element);
if Asis.Compilation_Units.Unit_Kind (CU) in
A_Procedure .. A_Generic_Package_Renaming
then
Spec_Or_Body := 'S';
end if;
return To_String
(Asis.Compilation_Units.Unit_Full_Name (CU)) & Spec_Or_Body;
end if;
end Get_Ada_Name;
function To_ASIS_Integer is new
Ada.Unchecked_Conversion
(Source => Unsigned_32,
Target => Asis.ASIS_Integer);
begin
Check_Validity (Element, Package_Name & "Hash");
-- The hash value for Elements is first created as 32-bit unsigned
-- integer and then converted into ASIS_Integer
--
-- Different approaches are used to create this 32-bit unsigned
-- integer value for Elements which are and which are not from the
-- predefined Standard package.
--
-- For Elements from Standard:
-- - If Element represents the An_Enumeration_Literal_Specification
-- or A_Defining_Character_Literal from types Character or
-- Standard_Character, the corresponding character code is used
-- as hash value
-- - otherwise the Node Id of the Element is used as hash value;
--
-- For Elements which are not from Standard the 32 bits are first
-- filled in by the following information:
--
-- 0 .. 8 - the hash value computed from the Ada name of enclosing
-- unit
-- 9 - Is_Part_Of_Implicit
-- 10 .. 13 - column in the source file computed from the Sloc of
-- Element's Node reference
-- 14 - Is_Part_Of_Inherited
-- 15 .. 22 - Internal kind (converted to 'Pos value)
-- 23 - Is_Part_Of_Instance
-- 24 .. 29 - line in the source file computed from the Sloc of
-- Element's Node reference
-- 30 .. 31 - Special_Case (converted to 'Pos value)
--
-- All the values are reduced modulo the corresponding values to fit
-- the corresponding range. In case of extended generic code, line
-- and column are computed as the sum of all the lines and columns
-- in the chain of the source references corresponding to the
-- instantiation
--
-- After creating such a value, it is rotated right by the number of
-- the lines computed from Sloc of Element's Node reference
if Encl_Unit_Id (Element) = Standard_Id then
if Character_Code (Element) /= 0 then
Result := Result + (Unsigned_32 (Character_Code (Element)));
else
N := Node_Value (Element);
Result := Unsigned_32 (N);
end if;
elsif not Is_Nil (Element) then
N := Node (Element);
S := Sloc (N);
L := Get_Physical_Line_Number (Sloc (N));
C := Get_Column_Number (Sloc (N));
S := Instantiation_Location (S);
while S /= No_Location loop
L := L + Get_Physical_Line_Number (Sloc (N));
C := C + Get_Column_Number (Sloc (N));
S := Instantiation_Location (S);
end loop;
-- Special Case:
Result := Result +
(Unsigned_32 (
Special_Cases'Pos (Special_Case (Element))) mod Max_Specs);
Result := Shift_Left (Result, Line_Pos);
-- Line:
Result := Result + (Unsigned_32 (L) mod Max_Lines);
Result := Shift_Left (Result, Inst_Pos);
-- Is_Part_Of_Instance
if Is_From_Instance (Element) then
Result := Result + 1;
end if;
Result := Shift_Left (Result, Kind_Pos);
-- Internal kind:
Result := Result +
(Internal_Element_Kinds'Pos (Int_Kind (Element)) mod Max_Kinds);
Result := Shift_Left (Result, Inh_Pos);
-- Is_Part_Of_Inherited
if Is_From_Inherited (Element) then
Result := Result + 1;
end if;
Result := Shift_Left (Result, Col_Pos);
-- Column:
Result := Result + (Unsigned_32 (C) mod Max_Cols);
Result := Shift_Left (Result, Impl_Pos);
-- Is_Part_Of_Implicit:
if Is_From_Implicit (Element) then
Result := Result + 1;
end if;
Result := Shift_Left (Result, Name_Pos);
-- Hash value computed from the name of enclosed unit:
Result := Result + Unsigned_32 (Ada_Name_Hash (Get_Ada_Name));
-- And now, rotating Result
Result := Rotate_Right (Result, Natural (L));
end if;
return To_ASIS_Integer (Result);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Element,
Outer_Call => Package_Name & "Hash");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Hash",
Ex => Ex,
Arg_Element => Element);
end Hash;
-----------------------------------------------------------------------------
------------------------------------------------------------------------------
-- Processing of the Ada extensions that most likely will be included in --
-- Ada 2015 and that are already implemented in GNAT --
------------------------------------------------------------------------------
--------------------------
-- Expression_Path_Kind --
--------------------------
function Expression_Path_Kind
(Path : Asis.Element)
return Asis.Expression_Path_Kinds
is
begin
Check_Validity (Path, Package_Name & "Expression_Path_Kind");
return Expression_Path_Kind_From_Internal (Int_Kind (Path));
end Expression_Path_Kind;
end Asis.Elements;
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