/usr/share/ada/adainclude/asis/asis-clauses.adb is in libasis2014-dev 2014-4.
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 . C L A U S E S --
-- --
-- B o d y --
-- --
-- Copyright (C) 1995-2012, 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 Asis.Errors; use Asis.Errors;
with Asis.Exceptions; use Asis.Exceptions;
with Asis.Set_Get; use Asis.Set_Get;
with A4G.Mapping; use A4G.Mapping;
with A4G.Vcheck; use A4G.Vcheck;
with Atree; use Atree;
with Namet; use Namet;
with Nlists; use Nlists;
with Sinfo; use Sinfo;
with Snames; use Snames;
package body Asis.Clauses is
Package_Name : constant String := "Asis.Clauses.";
------------------
-- Clause_Names --
------------------
function Clause_Names (Clause : Asis.Element) return Asis.Element_List is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Clause);
Arg_Node : Node_Id;
Result_List : List_Id;
Result_Len : Natural := 1;
Withed_Uname : Node_Id;
begin
Check_Validity (Clause, Package_Name & "Clause_Names");
if not (Arg_Kind = A_Use_Package_Clause or else
Arg_Kind = A_Use_Type_Clause or else
Arg_Kind = A_Use_All_Type_Clause or else -- Ada 2012
Arg_Kind = A_With_Clause)
then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Clause_Names",
Wrong_Kind => Arg_Kind);
end if;
Arg_Node := Node (Clause);
if Arg_Kind = A_With_Clause then
-- first, computing the number of names listed in the argument
-- with clause
-- Note that we should skip implicit with cleause that may be added
-- by front-end
while not (Comes_From_Source (Arg_Node)
and then
Last_Name (Arg_Node))
loop
if Comes_From_Source (Arg_Node) then
Result_Len := Result_Len + 1;
end if;
Arg_Node := Next (Arg_Node);
end loop;
declare
Result_List : Asis.Element_List (1 .. Result_Len);
begin
Arg_Node := Node (Clause);
for I in 1 .. Result_Len loop
Withed_Uname := Sinfo.Name (Arg_Node);
Result_List (I) := Node_To_Element_New
(Starting_Element => Clause,
Node => Withed_Uname);
Arg_Node := Next (Arg_Node);
while Present (Arg_Node)
and then
not Comes_From_Source (Arg_Node)
loop
Arg_Node := Next (Arg_Node);
end loop;
end loop;
return Result_List;
end;
else
if Nkind (Arg_Node) = N_Use_Package_Clause then
Result_List := Names (Arg_Node);
else
Result_List := Subtype_Marks (Arg_Node);
end if;
return N_To_E_List_New (List => Result_List,
Starting_Element => Clause);
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 & "Clause_Names",
Argument => Clause);
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Clause_Names",
Ex => Ex,
Arg_Element => Clause);
end Clause_Names;
-------------------------------
-- Component_Clause_Position --
-------------------------------
function Component_Clause_Position
(Clause : Asis.Component_Clause)
return Asis.Expression
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Clause);
Arg_Node : Node_Id;
begin
Check_Validity (Clause, Package_Name & "Component_Clause_Position");
if not (Arg_Kind = A_Component_Clause) then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Component_Clause_Position",
Wrong_Kind => Arg_Kind);
end if;
Arg_Node := Node (Clause);
return Node_To_Element_New (Node => Position (Arg_Node),
Starting_Element => Clause);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Component_Clause_Position",
Argument => Clause);
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Component_Clause_Position",
Ex => Ex,
Arg_Element => Clause);
end Component_Clause_Position;
----------------------------
-- Component_Clause_Range --
----------------------------
function Component_Clause_Range
(Clause : Asis.Component_Clause)
return Asis.Discrete_Range
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Clause);
Arg_Node : Node_Id;
begin
Check_Validity (Clause, Package_Name & "Component_Clause_Range");
if not (Arg_Kind = A_Component_Clause) then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Component_Clause_Range",
Wrong_Kind => Arg_Kind);
end if;
Arg_Node := Node (Clause);
return Node_To_Element_New
(Node => Arg_Node,
Internal_Kind => A_Discrete_Simple_Expression_Range,
Starting_Element => Clause);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Component_Clause_Range",
Argument => Clause);
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Component_Clause_Range",
Ex => Ex,
Arg_Element => Clause);
end Component_Clause_Range;
-----------------------
-- Component_Clauses --
-----------------------
function Component_Clauses
(Clause : Asis.Representation_Clause;
Include_Pragmas : Boolean := False)
return Asis.Component_Clause_List
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Clause);
Arg_Node : Node_Id;
begin
Check_Validity (Clause, Package_Name & "Component_Clauses");
if not (Arg_Kind = A_Record_Representation_Clause) then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Component_Clauses",
Wrong_Kind => Arg_Kind);
end if;
Arg_Node := Node (Clause);
return N_To_E_List_New
(List => Component_Clauses (Arg_Node),
Include_Pragmas => Include_Pragmas,
Starting_Element => Clause);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Component_Clauses",
Argument => Clause,
Bool_Par => Include_Pragmas);
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Component_Clauses",
Ex => Ex,
Arg_Element => Clause,
Bool_Par_ON => Include_Pragmas);
end Component_Clauses;
---------------------------
-- Mod_Clause_Expression --
---------------------------
function Mod_Clause_Expression
(Clause : Asis.Representation_Clause)
return Asis.Expression
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Clause);
Arg_Node : Node_Id;
Mod_Clause_Node : Node_Id;
begin
Check_Validity (Clause, Package_Name & "Mod_Clause_Expression");
if not (Arg_Kind = A_Record_Representation_Clause) then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Mod_Clause_Expression",
Wrong_Kind => Arg_Kind);
end if;
Arg_Node := Node (Clause);
Mod_Clause_Node := Next (Arg_Node);
if Nkind (Mod_Clause_Node) = N_Attribute_Definition_Clause and then
From_At_Mod (Mod_Clause_Node)
then
Mod_Clause_Node := Sinfo.Expression (Mod_Clause_Node);
else
Mod_Clause_Node := Empty;
end if;
if No (Mod_Clause_Node) then
return Asis.Nil_Element;
else
return Node_To_Element_New
(Node => Mod_Clause_Node,
Starting_Element => Clause);
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 & "Mod_Clause_Expression",
Argument => Clause);
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Mod_Clause_Expression",
Ex => Ex,
Arg_Element => Clause);
end Mod_Clause_Expression;
--------------------------------------
-- Representation_Clause_Expression --
--------------------------------------
function Representation_Clause_Expression
(Clause : Asis.Representation_Clause)
return Asis.Expression
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Clause);
Arg_Node : Node_Id;
Result_Node : Node_Id;
Result_Kind : Internal_Element_Kinds := Not_An_Element;
begin
Check_Validity (Clause,
Package_Name & "Representation_Clause_Expression");
if not (Arg_Kind = An_Attribute_Definition_Clause or else
Arg_Kind = An_Enumeration_Representation_Clause or else
Arg_Kind = An_At_Clause)
then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Representation_Clause_Expression",
Wrong_Kind => Arg_Kind);
end if;
Arg_Node := Node (Clause);
if Nkind (Arg_Node) = N_Enumeration_Representation_Clause then
Result_Node := Array_Aggregate (Arg_Node);
if Present (Expressions (Result_Node)) then
Result_Kind := A_Positional_Array_Aggregate;
else
Result_Kind := A_Named_Array_Aggregate;
end if;
else
Result_Node := Sinfo.Expression (Arg_Node);
end if;
return Node_To_Element_New (Node => Result_Node,
Internal_Kind => Result_Kind,
Starting_Element => Clause);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Representation_Clause_Expression",
Argument => Clause);
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Representation_Clause_Expression",
Ex => Ex,
Arg_Element => Clause);
end Representation_Clause_Expression;
--------------------------------
-- Representation_Clause_Name --
--------------------------------
function Representation_Clause_Name
(Clause : Asis.Clause)
return Asis.Name
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Clause);
Arg_Node : Node_Id;
Result_Node : Node_Id;
Result_Element : Element;
Result_Kind : Internal_Element_Kinds := Not_An_Element;
Attr_Des : Name_Id;
-- needed for special processing of attribute definition clause
begin
Check_Validity (Clause, Package_Name & "Representation_Clause_Name");
if not (Arg_Kind = An_Attribute_Definition_Clause or else
Arg_Kind = An_Enumeration_Representation_Clause or else
Arg_Kind = A_Record_Representation_Clause or else
Arg_Kind = An_At_Clause or else
Arg_Kind = A_Component_Clause)
then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Representation_Clause_Name",
Wrong_Kind => Arg_Kind);
end if;
Arg_Node := Node (Clause);
if Nkind (Arg_Node) = N_Attribute_Definition_Clause then
-- for An_Attribute_Definition_Clause argument we have to return
-- as the result the Element of An_Attribute_Reference kind.
-- The tree does not contain the structures for attribute reference
-- in this case (and it should not, because, according to RM 95,
-- there is no attribute reference in the syntax structure of
-- an attribute definition clause, so we have to "emulate"
-- the result Elemet of An_Attribute_Reference kind on the base
-- of the same node
-- first, we have to define the exact kind of the "artificial"
-- attribute reference to be returned
Attr_Des := Chars (Arg_Node);
case Attr_Des is
when Name_Address =>
Result_Kind := An_Address_Attribute;
when Name_Alignment =>
Result_Kind := An_Alignment_Attribute;
when Name_Bit_Order =>
Result_Kind := A_Bit_Order_Attribute;
when Name_Component_Size =>
Result_Kind := A_Component_Size_Attribute;
when Name_External_Tag =>
Result_Kind := An_External_Tag_Attribute;
when Name_Input =>
Result_Kind := An_Input_Attribute;
when Name_Machine_Radix =>
Result_Kind := A_Machine_Radix_Attribute;
when Name_Output =>
Result_Kind := An_Output_Attribute;
when Name_Read =>
Result_Kind := A_Read_Attribute;
when Name_Size =>
Result_Kind := A_Size_Attribute;
when Name_Small =>
Result_Kind := A_Small_Attribute;
when Name_Storage_Size =>
Result_Kind := A_Storage_Size_Attribute;
when Name_Storage_Pool =>
Result_Kind := A_Storage_Pool_Attribute;
when Name_Write =>
Result_Kind := A_Write_Attribute;
when others =>
-- "others" means Name_Object_Size and Name_Value_Size
Result_Kind := An_Implementation_Defined_Attribute;
end case;
Result_Element := Clause;
Set_Int_Kind (Result_Element, Result_Kind);
return Result_Element;
elsif Nkind (Arg_Node) = N_Component_Clause then
Result_Node := Component_Name (Arg_Node);
else
Result_Node := Sinfo.Identifier (Arg_Node);
end if;
return Node_To_Element_New (Node => Result_Node,
Starting_Element => Clause);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Representation_Clause_Name",
Argument => Clause);
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Representation_Clause_Name",
Ex => Ex,
Arg_Element => Clause);
end Representation_Clause_Name;
end Asis.Clauses;
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