/usr/share/ada/adainclude/asis/asis-extensions.adb is in libasis2017-dev 2017-2.
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 X T E N S I O N S --
-- --
-- B o d y --
-- --
-- Copyright (C) 1995-2017, 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 3, or (at your option) any later --
-- version. ASIS-for-GNAT is distributed in the hope that it will be --
-- useful, but WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- --
-- --
-- --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception distributed with GNAT; see --
-- the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- 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). --
-- --
------------------------------------------------------------------------------
pragma Ada_2012;
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Strings; use Ada.Strings;
with Ada.Strings.Fixed; use Ada.Strings.Fixed;
with GNAT.Directory_Operations; use GNAT.Directory_Operations;
with Asis.Compilation_Units; use Asis.Compilation_Units;
with Asis.Declarations; use Asis.Declarations;
with Asis.Definitions; use Asis.Definitions;
with Asis.Errors; use Asis.Errors;
with Asis.Exceptions; use Asis.Exceptions;
with Asis.Expressions; use Asis.Expressions;
with Asis.Statements; use Asis.Statements;
with Asis.Set_Get; use Asis.Set_Get;
with A4G.A_Debug; use A4G.A_Debug;
with A4G.A_Opt; use A4G.A_Opt;
with A4G.A_Sem; use A4G.A_Sem;
with A4G.A_Sinput; use A4G.A_Sinput;
with A4G.Contt; use A4G.Contt;
with A4G.Contt.TT; use A4G.Contt.TT;
with A4G.Contt.UT; use A4G.Contt.UT;
with A4G.DDA_Aux; use A4G.DDA_Aux;
with A4G.Decl_Sem; use A4G.Decl_Sem;
with A4G.Asis_Tables; use A4G.Asis_Tables;
with A4G.Expr_Sem; use A4G.Expr_Sem;
with A4G.GNAT_Int; use A4G.GNAT_Int;
with A4G.Mapping; use A4G.Mapping;
with A4G.Queries; use A4G.Queries;
with A4G.Vcheck; use A4G.Vcheck;
with Atree; use Atree;
with Einfo; use Einfo;
with Elists; use Elists;
with Namet; use Namet;
with Nlists; use Nlists;
with Output; use Output;
with Sinfo; use Sinfo;
with Sinput; use Sinput;
with Snames; use Snames;
with Stand; use Stand;
with Stringt; use Stringt;
with Uintp; use Uintp;
with Urealp; use Urealp;
package body Asis.Extensions is
Package_Name : constant String := "Asis.Extensions.";
-----------------------
-- Local subprograms --
-----------------------
function Is_Typeless_Subaggregate (Aggr : Node_Id) return Boolean;
-- Checks if Aggr represents an inner typeless subaggregate of
-- multi-dimensional array aggregate. A caller is responsible for providing
-- only nodes that represents components of array aggregates as actuals.
function Is_Expanded_Subprogram (N : Node_Id) return Boolean;
-- Checks if N corresponds to the spec of an expanded generic
-- subprogram. Is needed because Comes_From_Source in this case is
-- set OFF (opposite to expanded packages)
function Is_Type_Operator
(Op_Decl : Asis.Element;
Type_Decl : Asis.Element)
return Boolean;
-- Checks if Op_Decl declares an operator function having a parameter
-- or a result of the type Type_Decl (Type_Decl is supposed to be a type
-- declaration name). Returns False for a function body if the body has
-- the separate spec
function Overrides_Type_Operator
(Op_Decl : Asis.Element;
Type_Decl : Asis.Element)
return Boolean;
-- Provided that Is_Type_Operator (Op_Decl, Type_Decl) is True (note,
-- that this function does not check this, it should be checked by the
-- caller), checks if Op_Decl overrides a predefined or inherited
-- operator function that exists for Type_Decl
function Is_From_Import_Procedure_Pragma (N : Node_Id) return Boolean;
-- Checks a specific situation for an identifier specific to a pragma for
-- GNAT-specific pragmas Import_Procedure and Import_Valued_Procedure -
-- for components of MECHANISM_NAME having the form of A (B).
function Get_LF_From_Ureal (U : Ureal) return Long_Long_Float;
-- Converts universal real into Long_Float. This is a quick-and-dirty
-- solution for extending Static_Expression_Value_Image for real image,
-- it may blow up in case if numerator or denominator is too big. The
-- conversion does some arbitrary rounding (I believe this rounding is
-- reasonable, but I have no proof of this)
pragma Unreferenced (Get_LF_From_Ureal);
function Get_Implemented_Op
(Op_Decl : Asis.Element;
Type_Def : Asis.Element)
return Asis.Element;
pragma Unreferenced (Get_Implemented_Op);
-- Op_Decl is supposed to be a declaration of a dispatching operation for
-- that Is_Overriding_Operation is true. Type_Def is supposed to be an
-- interface type definition for some interface type that is included in
-- the interface list of the definition of the type that is the type
-- of dispatching operand(s) of Op_Decl. This function checks if Op_Decl
-- may implement some operation of this interface, and if it may returns
-- the declaration of this interface operation as a result, otherwise it
-- returns Nil_Element.
function Is_Procedure (Decl : Asis.Element) return Boolean;
pragma Unreferenced (Is_Procedure);
-- Checks that Decl declares a procedure
------------------
-- Acts_As_Spec --
------------------
function Acts_As_Spec (Declaration : Asis.Element) return Boolean is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Declaration);
Arg_Node : Node_Id;
Name_Node : Node_Id;
Spec_Node : Node_Id;
Arg_Ekind : Entity_Kind;
Result : Boolean := False;
begin
Check_Validity (Declaration, Package_Name & "Acts_As_Spec");
Arg_Node := Node (Declaration);
case Arg_Kind is
when A_Procedure_Body_Declaration |
A_Function_Body_Declaration =>
Result := Acts_As_Spec (Arg_Node);
-- The problem here is that for some subprogram bodies the
-- front-end creates artificial specs and sets OFF the
-- Acts_As_Spec flag for the body. At the moment we have detected
-- two such situations (and we exclude the case of expanded
-- subprogram body not to mix up with the similar situation in
-- the tree, see :
if not Result
and then
Special_Case (Declaration) /= Expanded_Subprogram_Instantiation
then
-- (1) Bodies declared immediately within protected bodies
if Nkind (Parent (Arg_Node)) = N_Protected_Body then
Spec_Node := Corresponding_Spec (Arg_Node);
if Is_Artificial_Protected_Op_Item_Spec (Spec_Node) then
Result := True;
end if;
else
-- (2) child subprogram bodies with no separate spec
Name_Node := Defining_Unit_Name (Specification (Arg_Node));
if Nkind (Name_Node) = N_Defining_Program_Unit_Name then
Arg_Node := Corresponding_Spec (Arg_Node);
if Present (Arg_Node) then
while not
(Nkind (Arg_Node) = N_Subprogram_Declaration or else
Nkind (Arg_Node) = N_Generic_Subprogram_Declaration)
loop
Arg_Node := Parent (Arg_Node);
end loop;
Result := not Comes_From_Source (Arg_Node);
end if;
end if;
end if;
end if;
when A_Null_Procedure_Declaration =>
Result := not Is_Rewrite_Substitution (R_Node (Declaration));
when A_Procedure_Body_Stub |
A_Function_Body_Stub =>
Arg_Ekind := Ekind (Defining_Unit_Name (Specification (Arg_Node)));
Result := Arg_Ekind = E_Function
or else Arg_Ekind = E_Procedure;
when An_Expression_Function_Declaration =>
if Is_Part_Of_Inherited (Declaration) then
Result := False;
else
Result :=
Nkind (R_Node (Declaration)) = N_Subprogram_Declaration;
end if;
when others => null;
end case;
return Result;
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 & "Acts_As_Spec");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Acts_As_Spec",
Ex => Ex,
Arg_Element => Declaration);
end Acts_As_Spec;
-----------------------------------------
-- Body_In_Library_Level_Instantiation --
-----------------------------------------
function Body_In_Library_Level_Instantiation
(Declaration : Asis.Element;
Instantiation_Source : out String_Access)
return Boolean
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Declaration);
Result : Boolean := False;
Instantiation : Asis.Element;
begin
Free (Instantiation_Source);
if Arg_Kind in
A_Function_Instantiation |
A_Package_Instantiation |
A_Procedure_Instantiation
or else
(Arg_Kind in
A_Function_Declaration |
A_Generic_Package_Declaration |
A_Generic_Procedure_Declaration |
A_Generic_Function_Declaration |
A_Package_Declaration |
A_Procedure_Declaration |
A_Single_Task_Declaration |
A_Task_Type_Declaration |
A_Protected_Type_Declaration |
A_Single_Protected_Declaration
and then
Is_Part_Of_Instance (Declaration))
then
-- First, locating the outermost instantiation:
Instantiation := Declaration;
while not (Declaration_Kind (Instantiation) in
A_Function_Instantiation |
A_Package_Instantiation |
A_Procedure_Instantiation
and then
not Is_Part_Of_Instance (Instantiation))
loop
Instantiation := Enclosing_Element (Instantiation);
pragma Assert (not Is_Nil (Instantiation));
end loop;
if Is_Nil (Enclosing_Element (Instantiation)) then
-- Library-level instantiation
Result := True;
Instantiation_Source :=
new String'(To_String (Text_Name (Enclosing_Compilation_Unit
(Instantiation))) & ASCII.NUL);
end if;
end if;
return Result;
end Body_In_Library_Level_Instantiation;
------------------------------
-- Compilation_Dependencies --
------------------------------
function Compilation_Dependencies
(Main_Unit : Asis.Compilation_Unit)
return Asis.Compilation_Unit_List
is
Arg_Kind : constant Asis.Unit_Kinds := Kind (Main_Unit);
Arg_Unit_Id : Unit_Id;
Res_Cont_Id : Context_Id;
begin
Check_Validity (Main_Unit, Package_Name & "Compilation_Dependencies");
if Arg_Kind not in A_Procedure .. A_Protected_Body_Subunit then
Raise_ASIS_Inappropriate_Compilation_Unit
(Diagnosis => Package_Name & "Compilation_Dependencies");
end if;
Res_Cont_Id := Encl_Cont_Id (Main_Unit);
Reset_Context (Res_Cont_Id);
Arg_Unit_Id := Get_Unit_Id (Main_Unit);
declare
Result_Id_List : constant Unit_Id_List :=
GNAT_Compilation_Dependencies (Arg_Unit_Id);
Result_List : constant Compilation_Unit_List :=
Get_Comp_Unit_List (Result_Id_List, Res_Cont_Id);
begin
if Is_Nil (Result_List) then
Raise_ASIS_Inappropriate_Compilation_Unit
(Diagnosis => Package_Name & "Compilation_Dependencies");
else
return Result_List;
end if;
end;
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_Dependencies");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Compilation_Dependencies",
Ex => Ex,
Arg_CU => Main_Unit);
end Compilation_Dependencies;
-------------
-- Compile --
-------------
procedure Compile
(Source_File : String_Access;
Args : Argument_List;
Success : out Boolean;
GCC : String_Access := null;
Use_GPRBUILD : Boolean := False;
Result_In_Current_Dir : Boolean := True;
Compiler_Out : String := "";
All_Warnings_Off : Boolean := True;
Display_Call : Boolean := False)
is
Comp_Args : Argument_List (Args'First .. Args'Last + 12 + 1);
First_Idx : constant Integer := Comp_Args'First;
Last_Idx : Integer := First_Idx;
Obj_Name : String_Access;
Dot_Idx : Natural := 0;
Is_GNAAMP_Call : Boolean := False;
-- In case of the call to GNAAMP we should not set '-x ada' flags
Is_GPRBUILD_Call : Boolean := Use_GPRBUILD;
begin
if Is_GPRBUILD_Call and then GCC = null then
-- We can not set gnatmake-specific parameters in this case
Is_GPRBUILD_Call := False;
end if;
if GCC /= null then
Is_GNAAMP_Call :=
Index (To_Lower (Base_Name (GCC.all)), "gnaamp") /= 0;
end if;
Comp_Args (Last_Idx) := Comp_Flag;
Last_Idx := Last_Idx + 1;
if not Is_GPRBUILD_Call then
Comp_Args (Last_Idx) := GNAT_Flag_ct;
Last_Idx := Last_Idx + 1;
if not Is_GNAAMP_Call then
Comp_Args (Last_Idx) := GCC_Flag_X;
Last_Idx := Last_Idx + 1;
Comp_Args (Last_Idx) := GCC_Par_Ada;
Last_Idx := Last_Idx + 1;
end if;
else
Comp_Args (Last_Idx) := GNATMAKE_Flag_q;
Last_Idx := Last_Idx + 1;
Comp_Args (Last_Idx) := GNATMAKE_Flag_f;
Last_Idx := Last_Idx + 1;
Comp_Args (Last_Idx) := GNATMAKE_Flag_u;
Last_Idx := Last_Idx + 1;
end if;
for J in Args'Range loop
Comp_Args (Last_Idx) := Args (J);
Last_Idx := Last_Idx + 1;
end loop;
if not Is_GPRBUILD_Call and then All_Warnings_Off then
Comp_Args (Last_Idx) := GNAT_Flag_ws;
Last_Idx := Last_Idx + 1;
Comp_Args (Last_Idx) := GNAT_Flag_yN;
Last_Idx := Last_Idx + 1;
end if;
Comp_Args (Last_Idx) := Source_File;
if Is_GPRBUILD_Call then
Last_Idx := Last_Idx + 1;
Comp_Args (Last_Idx) := GNATMAKE_Flag_cargs;
Last_Idx := Last_Idx + 1;
Comp_Args (Last_Idx) := GNAT_Flag_ct;
if All_Warnings_Off then
Last_Idx := Last_Idx + 1;
Comp_Args (Last_Idx) := GNAT_Flag_ws;
Last_Idx := Last_Idx + 1;
Comp_Args (Last_Idx) := GNAT_Flag_yN;
end if;
end if;
if Is_GPRBUILD_Call and then Result_In_Current_Dir then
Last_Idx := Last_Idx + 1;
Comp_Args (Last_Idx) := GCC_Flag_o;
Last_Idx := Last_Idx + 1;
Obj_Name := new String'(Base_Name (Source_File.all));
Dot_Idx := Index (Obj_Name.all, ".", Backward);
if Dot_Idx /= 0 then
Dot_Idx := Dot_Idx - 1;
else
Dot_Idx := Obj_Name'Last;
end if;
Comp_Args (Last_Idx) := new String'
(Get_Current_Dir &
Directory_Separator &
Obj_Name (Obj_Name'First .. Dot_Idx) &
".o");
end if;
Success :=
Execute
(GCC, Comp_Args (Args'First .. Last_Idx), Compiler_Out,
Display_Call => Display_Call);
end Compile;
----------------
-- Components --
----------------
function Components (E : Asis.Element) return Asis.Element_List is
Child_Access : constant Func_Elem_Array := Appropriate_Queries (E);
Result_Length : Integer := 0;
begin
Check_Validity (E, Package_Name & "Components");
if Is_Nil (E) then
return Nil_Element_List;
end if;
-- first, we compute the result's length:
for Each_Query in Child_Access'Range loop
case Child_Access (Each_Query).Query_Kind is
when Bug | Boolean_Query | CU_Query_Kinds =>
null;
when Single_Element_Query =>
if not Is_Nil (Child_Access (Each_Query).Func_Simple (E)) then
Result_Length := Result_Length + 1;
end if;
when Element_List_Query =>
declare
Child_List : constant Asis.Element_List :=
Child_Access (Each_Query).Func_List (E);
begin
Result_Length := Result_Length + Child_List'Length;
end;
when Element_List_Query_With_Boolean =>
declare
Child_List : constant Asis.Element_List :=
Child_Access (Each_Query).Func_List_Boolean
(E, Child_Access (Each_Query).Bool);
begin
Result_Length := Result_Length + Child_List'Length;
end;
end case;
end loop;
-- and now, we define the result element list of Result_Length
-- length and fill it in by repeating the same loop. This is
-- not effective, and this will have to be revised.
if Result_Length = 0 then
return Nil_Element_List;
end if;
declare
Result_List : Asis.Element_List (1 .. Result_Length);
Next_Element : Integer := 1;
begin
for Each_Query in Child_Access'Range loop
case Child_Access (Each_Query).Query_Kind is
when Bug | Boolean_Query | CU_Query_Kinds =>
null;
when Single_Element_Query =>
if not Is_Nil
(Child_Access (Each_Query).Func_Simple (E))
then
Result_List (Next_Element) :=
Child_Access (Each_Query).Func_Simple (E);
Next_Element := Next_Element + 1;
end if;
when Element_List_Query =>
declare
Child_List : constant Asis.Element_List :=
Child_Access (Each_Query).Func_List (E);
begin
for I in Child_List'First .. Child_List'Last loop
Result_List (Next_Element) := Child_List (I);
Next_Element := Next_Element + 1;
end loop;
end;
when Element_List_Query_With_Boolean =>
declare
Child_List : constant Asis.Element_List :=
Child_Access (Each_Query).Func_List_Boolean
(E, Child_Access (Each_Query).Bool);
begin
for I in Child_List'First .. Child_List'Last loop
Result_List (Next_Element) := Child_List (I);
Next_Element := Next_Element + 1;
end loop;
end;
end case;
end loop;
return Result_List;
end;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => E,
Outer_Call => Package_Name & "Components");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Components",
Ex => Ex,
Arg_Element => E);
end Components;
----------------------------
-- Controlling_Parameters --
----------------------------
function Controlling_Parameters
(Declaration : Asis.Declaration)
return Asis.Element_List
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Declaration);
begin
Check_Validity
(Declaration,
Package_Name & "Controlling_Parameters");
if Arg_Kind not in
A_Procedure_Declaration |
A_Function_Declaration |
An_Expression_Function_Declaration |
A_Procedure_Renaming_Declaration |
A_Function_Renaming_Declaration |
A_Null_Procedure_Declaration |
A_Procedure_Body_Declaration |
A_Function_Body_Declaration |
A_Procedure_Body_Stub |
A_Function_Body_Stub
then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Controlling_Parameters",
Wrong_Kind => Arg_Kind);
end if;
declare
Params : constant Asis.Element_List :=
Parameter_Profile (Declaration);
Result : Asis.Element_List (1 .. Params'Length);
Last : Natural := 0;
Par_Name : Asis.Element;
Par_Entity : Entity_Id;
begin
for Par in Params'Range loop
Par_Name := First_Name (Params (Par));
Par_Entity := R_Node (Par_Name);
if Is_Controlling_Formal (Par_Entity) then
Last := Last + 1;
Result (Last) := Params (Par);
end if;
end loop;
return Result (1 .. Last);
end;
end Controlling_Parameters;
-----------------------------------------------
-- Corresponding_Body_Parameter_Definition --
-----------------------------------------------
function Corresponding_Body_Parameter_Definition
(Defining_Name : Asis.Defining_Name)
return Asis.Defining_Name
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Defining_Name);
Encl_Constr : Asis.Element;
Encl_Constr_Kind : Internal_Element_Kinds;
Result : Asis.Element := Nil_Element;
begin
Check_Validity
(Defining_Name,
Package_Name & "Corresponding_Body_Parameter_Definition");
if Arg_Kind /= A_Defining_Identifier then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Corresponding_Body_Parameter_Definition",
Wrong_Kind => Arg_Kind);
end if;
Encl_Constr := Enclosing_Element (Defining_Name);
if Declaration_Kind (Encl_Constr) not in A_Formal_Declaration then
Encl_Constr := (Enclosing_Element (Encl_Constr));
end if;
Encl_Constr_Kind := Int_Kind (Encl_Constr);
case Encl_Constr_Kind is
when A_Procedure_Body_Declaration |
A_Function_Body_Declaration =>
Result := Defining_Name;
when A_Procedure_Body_Stub |
A_Function_Body_Stub =>
Encl_Constr := Corresponding_Subunit (Encl_Constr);
when A_Procedure_Declaration |
A_Function_Declaration |
A_Generic_Function_Declaration |
A_Generic_Procedure_Declaration =>
Encl_Constr := Corresponding_Body (Encl_Constr);
Encl_Constr_Kind := Int_Kind (Encl_Constr);
if Encl_Constr_Kind = A_Procedure_Body_Stub or else
Encl_Constr_Kind = A_Function_Body_Stub
then
Encl_Constr := Corresponding_Subunit (Encl_Constr);
elsif Encl_Constr_Kind = An_Import_Pragma then
Encl_Constr := Nil_Element;
end if;
when others =>
-- For all the other situations we can not return a parameter
-- definition in the body
Encl_Constr := Nil_Element;
end case;
if not Is_Nil (Result)
or else
Is_Nil (Encl_Constr)
or else
Declaration_Kind (Encl_Constr) = Not_A_Declaration
then
return Result;
end if;
Process_Parameter_Specifications : declare
Def_Name_Image : constant String
:= To_Lower (To_String (Defining_Name_Image (Defining_Name)));
Param_Specs : constant Asis.Element_List
:= Parameter_Profile (Encl_Constr);
begin
Through_Parameter_Specs : for I in Param_Specs'Range loop
Process_Parameter_Names : declare
Par_Names : constant Asis.Element_List :=
Names (Param_Specs (I));
begin
Through_Parameter_Names : for J in Par_Names'Range loop
if Def_Name_Image =
To_Lower (To_String (Defining_Name_Image
(Par_Names (J))))
then
Result := Par_Names (J);
exit Through_Parameter_Specs;
end if;
end loop Through_Parameter_Names;
end Process_Parameter_Names;
end loop Through_Parameter_Specs;
end Process_Parameter_Specifications;
pragma Assert (not Is_Nil (Result));
return Result;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Defining_Name,
Outer_Call => Package_Name &
"Corresponding_Body_Parameter_Definition");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name &
"Corresponding_Body_Parameter_Definition",
Ex => Ex,
Arg_Element => Defining_Name);
end Corresponding_Body_Parameter_Definition;
-----------------------------------------
-- Corresponding_Called_Entity_Unwound --
-----------------------------------------
function Corresponding_Called_Entity_Unwound
(Statement : Asis.Statement)
return Asis.Declaration
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Statement);
Arg_Node : Node_Id;
Arg_Node_Kind : Node_Kind;
Result_Node : Node_Id;
Result_Unit : Compilation_Unit;
Res_Spec_Case : Special_Cases := Not_A_Special_Case;
Result : Asis.Element;
begin
Check_Validity
(Statement, Package_Name & "Corresponding_Called_Entity_Unwound");
if not (Arg_Kind = An_Entry_Call_Statement or else
Arg_Kind = A_Procedure_Call_Statement)
then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Corresponding_Called_Entity_Unwound",
Wrong_Kind => Arg_Kind);
end if;
-- First, check if we have nothing to unwind
Result := Corresponding_Called_Entity (Statement);
if Declaration_Kind (Result) /= A_Procedure_Renaming_Declaration then
return Result;
end if;
-- If we are here, we have to do the job... The implementation approach
-- is similar to the approach taken for
-- Asis.Expressions.Corresponding_Called_Function
Arg_Node := R_Node (Statement);
-- To be on the safe side, we use R_Node instead of Node, but it looks
-- like in this case R_Node and Node should be the same
Arg_Node_Kind := Nkind (Arg_Node);
case Arg_Node_Kind is
when N_Attribute_Reference =>
return Nil_Element;
-- call to a procedure-attribute
when N_Entry_Call_Statement | N_Procedure_Call_Statement =>
-- here we have to filter out the case when Nil_Element
-- should be returned for a call through access-to-function:
if Nkind (Sinfo.Name (Arg_Node)) = N_Explicit_Dereference then
return Nil_Element;
end if;
-- ??? <tree problem 4>
-- this fragment should be revised when the problem is fixed (as it should)
if Arg_Node_Kind = N_Entry_Call_Statement then
Result_Node := Sinfo.Name (Arg_Node);
-- Result_Node points to the name of the called entry
if Nkind (Result_Node) = N_Indexed_Component then
-- this is the case for a call to an entry from an
-- entry family
Result_Node := Prefix (Result_Node);
end if;
Result_Node := Entity (Selector_Name (Result_Node));
else
Result_Node := Entity (Sinfo.Name (Arg_Node));
-- only this assignment is needed if tree problem 4 is
-- fixed
end if;
-- ??? <tree problem 4> - end
when others =>
pragma Assert (False);
null;
end case;
Result_Node := Unwind_Renaming (Result_Node);
if No (Result_Node) then
-- renaming of a procedure-attribute
return Nil_Element;
end if;
if not Comes_From_Source (Result_Node) then
return Nil_Element;
end if;
Result_Unit := Enclosing_Unit (Encl_Cont_Id (Statement), Result_Node);
-- if not Is_Consistent (Result_Unit, Encl_Unit (Statement)) then
-- return Nil_Element;
-- end if;
-- And now - from a defining name to a declaration itself
Result_Node := Parent (Result_Node);
if Nkind (Result_Node) in N_Subprogram_Specification then
Result_Node := Parent (Result_Node);
end if;
if Is_Expanded_Subprogram (Result_Node) then
Res_Spec_Case := Expanded_Subprogram_Instantiation;
end if;
return Node_To_Element_New
(Node => Result_Node,
Spec_Case => Res_Spec_Case,
In_Unit => Result_Unit);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Statement,
Outer_Call => Package_Name &
"Corresponding_Called_Entity_Unwound");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name &
"Corresponding_Called_Entity_Unwound",
Ex => Ex,
Arg_Element => Statement);
end Corresponding_Called_Entity_Unwound;
-------------------------------------------
-- Corresponding_Called_Function_Unwound --
-------------------------------------------
function Corresponding_Called_Function_Unwound
(Expression : Asis.Expression)
return Asis.Declaration
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Expression);
Arg_Node : Node_Id;
Arg_Node_Kind : Node_Kind;
Result_Node : Node_Id;
Result_Unit : Compilation_Unit;
Res_Spec_Case : Special_Cases := Not_A_Special_Case;
Result : Asis.Element;
begin
Check_Validity
(Expression, Package_Name & "Corresponding_Called_Function_Unwound");
if not (Arg_Kind = A_Function_Call) then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Corresponding_Called_Function_Unwound",
Wrong_Kind => Arg_Kind);
end if;
-- First, check if we have nothing to unwind
Result := Corresponding_Called_Function (Expression);
if Declaration_Kind (Result) /= A_Function_Renaming_Declaration then
return Result;
end if;
-- If we are here, we have to do the job...
Arg_Node := R_Node (Expression);
Arg_Node_Kind := Nkind (Arg_Node);
-- Rewritten node should know everything. But if this node is the
-- result of compile-time optimization, we have to work with
-- original node only:
if Arg_Node_Kind = N_String_Literal or else
Arg_Node_Kind = N_Integer_Literal or else
Arg_Node_Kind = N_Real_Literal or else
Arg_Node_Kind = N_Character_Literal or else
Arg_Node_Kind = N_Raise_Constraint_Error or else
Arg_Node_Kind = N_Identifier
then
Arg_Node := Node (Expression);
Arg_Node_Kind := Nkind (Arg_Node);
elsif Arg_Node_Kind = N_Explicit_Dereference then
-- See F727-023
Arg_Node := Sinfo.Prefix (Arg_Node);
Arg_Node_Kind := Nkind (Arg_Node);
end if;
case Arg_Node_Kind is
when N_Attribute_Reference =>
return Nil_Element;
when N_Function_Call |
N_Procedure_Call_Statement =>
-- The second choice here corresponds to a procedure that is an
-- argument of Debug pragma
-- here we have to filter out the case when Nil_Element
-- should be returned for a call through access-to-function:
if Nkind (Sinfo.Name (Arg_Node)) = N_Explicit_Dereference then
return Nil_Element;
else
Result_Node := Entity (Sinfo.Name (Arg_Node));
end if;
when N_Op =>
-- all the predefined operations (??)
Result_Node := Entity (Arg_Node);
when others =>
pragma Assert (False);
null;
end case;
-- here we have Result_Node pointed to the defining occurrence of
-- the corresponding called function. Three things should be done:
-- 1. If Result_Node is defined in a renaming definition, we have
-- to unwind all the renamings till the defining occurrence of
-- the corresponding callable entity will be reached;
-- 2. If a given callable entity is implicitly defined, Nil_Element
-- should be returned;
-- 3. We have to come from a defining name to the corresponding
-- declaration and then we should return the Element
-- corresponding to this declaration
Result_Node := Unwind_Renaming (Result_Node);
if No (Result_Node) then
-- renaming of a function-attribute
return Nil_Element;
end if;
-- here we have Result_Node pointing to the defining occurrence of the
-- name of the corresponding called function. First, we have to
-- filter out implicitly declared functions:
if not Comes_From_Source (Result_Node) then
return Nil_Element;
end if;
Result_Unit := Enclosing_Unit (Encl_Cont_Id (Expression), Result_Node);
Result_Node := Parent (Result_Node);
if Nkind (Result_Node) = N_Defining_Program_Unit_Name then
Result_Node := Parent (Result_Node);
end if;
Result_Node := Parent (Result_Node);
-- to go from a defining name to a declaration itself
if Is_Expanded_Subprogram (Result_Node) then
Res_Spec_Case := Expanded_Subprogram_Instantiation;
end if;
return Node_To_Element_New
(Node => Result_Node,
Spec_Case => Res_Spec_Case,
In_Unit => Result_Unit);
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Expression,
Outer_Call => Package_Name &
"Corresponding_Called_Function_Unwound");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name &
"Corresponding_Called_Function_Unwound",
Ex => Ex,
Arg_Element => Expression);
end Corresponding_Called_Function_Unwound;
------------------------------------
-- Corresponding_First_Definition --
------------------------------------
function Corresponding_First_Definition
(Defining_Name : Asis.Defining_Name)
return Asis.Defining_Name
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Defining_Name);
Is_Parameter : Boolean := False;
Encl_Constr : Asis.Element;
Encl_Constr_Kind : Internal_Element_Kinds;
First_Declaration : Asis.Element := Nil_Element;
Discr_Part : Asis.Element := Nil_Element;
Tmp : Asis.Element;
Result : Asis.Element := Nil_Element;
begin
Check_Validity
(Defining_Name, Package_Name & "Corresponding_First_Definition");
if Arg_Kind not in Internal_Defining_Name_Kinds then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Corresponding_First_Definition",
Wrong_Kind => Arg_Kind);
end if;
Encl_Constr := Enclosing_Element (Defining_Name);
if Int_Kind (Encl_Constr) = A_Parameter_Specification then
Encl_Constr := Enclosing_Element (Encl_Constr);
Is_Parameter := True;
end if;
if Is_Subunit (Encl_Constr) then
Encl_Constr := Corresponding_Body_Stub (Encl_Constr);
end if;
Encl_Constr_Kind := Int_Kind (Encl_Constr);
case Encl_Constr_Kind is
when A_Procedure_Body_Declaration |
A_Function_Body_Declaration |
A_Function_Renaming_Declaration |
A_Procedure_Renaming_Declaration |
A_Procedure_Body_Stub |
A_Function_Body_Stub =>
if ((Encl_Constr_Kind = A_Procedure_Body_Declaration or else
Encl_Constr_Kind = A_Function_Body_Declaration or else
Encl_Constr_Kind = A_Procedure_Body_Stub or else
Encl_Constr_Kind = A_Function_Body_Stub)
and then (not (Acts_As_Spec (Encl_Constr))))
or else
((Encl_Constr_Kind = A_Function_Renaming_Declaration or else
Encl_Constr_Kind = A_Procedure_Renaming_Declaration)
and then Is_Renaming_As_Body (Encl_Constr))
then
-- there should be a corresponding spec where the first
-- definition should be:
if Is_Subunit (Encl_Constr) then
Encl_Constr := Corresponding_Body_Stub (Encl_Constr);
end if;
First_Declaration := Corresponding_Declaration (Encl_Constr);
if not Is_Parameter then
-- just returning a defining name from a declaration,
-- otherwise Result will remain nil, and we will have
-- to process the case of a formal parameter after this
-- case statement
Result := Names (First_Declaration) (1);
end if;
else
Result := Defining_Name;
end if;
when A_Package_Body_Declaration |
A_Task_Body_Declaration |
A_Protected_Body_Declaration |
A_Package_Body_Stub |
A_Task_Body_Stub |
A_Protected_Body_Stub |
An_Entry_Body_Declaration =>
First_Declaration := Corresponding_Declaration (Encl_Constr);
if not Is_Parameter then
Result := Names (First_Declaration) (1);
end if;
when An_Accept_Statement =>
First_Declaration := Corresponding_Entry (Encl_Constr);
when An_Ordinary_Type_Declaration =>
-- If it's internally-generated type, there is no other definition
if Is_Itype (R_Node (Defining_Name)) or else
Is_Internal (R_Node (Defining_Name))
then
Result := Defining_Name;
else
Result := Corresponding_Type_Declaration (Encl_Constr);
if Is_Nil (Result) then
-- Encl_Constr is not a completion of an incomplete or
-- private type declaration
Result := Defining_Name;
else
Result := Names (Result) (1);
end if;
end if;
when A_Discriminant_Specification =>
Encl_Constr := Enclosing_Element (Encl_Constr);
Encl_Constr := Enclosing_Element (Encl_Constr);
case Declaration_Kind (Encl_Constr) is
when A_Task_Type_Declaration |
A_Protected_Type_Declaration |
A_Private_Type_Declaration |
A_Private_Extension_Declaration =>
First_Declaration :=
Corresponding_Type_Partial_View (Encl_Constr);
if not Is_Nil (First_Declaration) then
Discr_Part := Discriminant_Part (First_Declaration);
if Definition_Kind (Discr_Part) /=
A_Known_Discriminant_Part
then
First_Declaration := Nil_Element;
end if;
end if;
when An_Ordinary_Type_Declaration =>
First_Declaration :=
Corresponding_Type_Partial_View (Encl_Constr);
if not Is_Nil (First_Declaration) then
Discr_Part := Discriminant_Part (First_Declaration);
if Definition_Kind (Discr_Part) /=
A_Known_Discriminant_Part
then
First_Declaration := Nil_Element;
end if;
if not Is_Nil (First_Declaration)
and then
Declaration_Kind (First_Declaration) not in
An_Incomplete_Type_Declaration ..
A_Tagged_Incomplete_Type_Declaration
and then
not Is_Nil (Corresponding_Type_Partial_View
(First_Declaration))
then
Tmp :=
Corresponding_Type_Partial_View (First_Declaration);
if Definition_Kind (Discriminant_Part (Tmp)) =
A_Known_Discriminant_Part
then
First_Declaration := Tmp;
Discr_Part := Discriminant_Part (Tmp);
end if;
end if;
end if;
when others =>
Result := Defining_Name;
end case;
if Is_Nil (Result)
and then
Is_Nil (First_Declaration)
then
Result := Defining_Name;
end if;
if Is_Nil (Result) then
-- We have to traverse the doscriminant part of
-- First_Declaration to locate the corresponding discriminant
Process_Discriminant_Specifications : declare
Def_Name_Image : constant String :=
To_Lower (To_String (Defining_Name_Image (Defining_Name)));
Discr_Specs : constant Asis.Element_List :=
Discriminants (Discr_Part);
begin
Through_Discriminant_Specs : for J in Discr_Specs'Range loop
Process_Discriminant_Names : declare
Discr_Names : constant Asis.Element_List :=
Names (Discr_Specs (J));
begin
Through_Discr_Names : for J in Discr_Names'Range loop
if Def_Name_Image =
To_Lower (To_String (Defining_Name_Image
(Discr_Names (J))))
then
Result := Discr_Names (J);
exit Through_Discriminant_Specs;
end if;
end loop Through_Discr_Names;
end Process_Discriminant_Names;
end loop Through_Discriminant_Specs;
end Process_Discriminant_Specifications;
end if;
when others =>
Result := Defining_Name;
end case;
if Is_Nil (Result) then
-- here we have to compute the first definition of the formal
-- parameter in a subprogram spec/entry declaration
Process_Parameter_Specifications : declare
Def_Name_Image : constant String
:= To_Lower (To_String (Defining_Name_Image (Defining_Name)));
Param_Specs : constant Asis.Element_List
:= Parameter_Profile (First_Declaration);
begin
Through_Parameter_Specs : for I in Param_Specs'Range loop
Process_Parameter_Names : declare
Par_Names : constant Asis.Element_List :=
Names (Param_Specs (I));
begin
Through_Parameter_Names : for J in Par_Names'Range loop
if Def_Name_Image =
To_Lower (To_String (Defining_Name_Image
(Par_Names (J))))
then
Result := Par_Names (J);
exit Through_Parameter_Specs;
end if;
end loop Through_Parameter_Names;
end Process_Parameter_Names;
end loop Through_Parameter_Specs;
end Process_Parameter_Specifications;
end if;
pragma Assert (not Is_Nil (Result));
return Result;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Defining_Name,
Outer_Call => Package_Name & "Corresponding_First_Definition");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Corresponding_First_Definition",
Ex => Ex,
Arg_Element => Defining_Name);
end Corresponding_First_Definition;
----------------------------------------
-- Corresponding_Overridden_Operation --
----------------------------------------
function Corresponding_Overridden_Operation
(Declaration : Asis.Declaration)
return Asis.Declaration
is
Result : Asis.Element := Nil_Element;
Result_Unit : Compilation_Unit;
Result_Node : Node_Id;
Inherited : Boolean := False;
Association_Type : Node_Id;
begin
Check_Validity (Declaration,
Package_Name & "Corresponding_Overridden_Operation");
case Declaration_Kind (Declaration) is
when A_Procedure_Declaration |
A_Function_Declaration |
An_Expression_Function_Declaration |
A_Procedure_Instantiation |
A_Function_Instantiation |
A_Procedure_Body_Declaration |
A_Null_Procedure_Declaration |
A_Function_Body_Declaration |
A_Procedure_Renaming_Declaration |
A_Function_Renaming_Declaration =>
null;
when others =>
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name &
"Corresponding_Overridden_Operation",
Wrong_Kind => Int_Kind (Declaration));
end case;
if Is_Overriding_Operation (Declaration) then
if Declaration_Kind (Declaration) in
A_Procedure_Instantiation .. A_Function_Instantiation
then
Result_Node := Specification (Instance_Spec (Node (Declaration)));
Result_Node :=
Related_Instance (Defining_Unit_Name (Result_Node));
else
Result_Node :=
Defining_Unit_Name (Specification (Node (Declaration)));
end if;
Result_Node := Overridden_Operation (Result_Node);
Inherited := not Comes_From_Source (Result_Node);
if Inherited then
Association_Type := Result_Node;
Result_Node := Explicit_Parent_Subprogram (Result_Node);
Result_Unit :=
Enclosing_Unit (Encl_Cont_Id (Declaration), Association_Type);
Result := Node_To_Element_New (Node => Result_Node,
Node_Field_1 => Association_Type,
Inherited => True,
In_Unit => Result_Unit);
if Is_From_Instance (Association_Type) then
Set_From_Instance (Result, True);
else
Set_From_Instance (Result, False);
end if;
else
Result_Unit :=
Enclosing_Unit (Encl_Cont_Id (Declaration), Result_Node);
Result := Node_To_Element_New (Node => Result_Node,
In_Unit => Result_Unit);
end if;
Result := Enclosing_Element (Result);
if Special_Case (Result) = Expanded_Subprogram_Instantiation then
Result := Enclosing_Element (Result);
end if;
end if;
return Result;
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 &
"Corresponding_Overridden_Operation");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name &
"Corresponding_Overridden_Operation",
Ex => Ex,
Arg_Element => Declaration);
end Corresponding_Overridden_Operation;
-----------------------------------------
-- Corresponding_Overridden_Operations --
-----------------------------------------
-- UNDER CONSTRUCTION!!!
pragma Warnings (Off);
function Corresponding_Overridden_Operations
(Declaration : Asis.Declaration)
return Asis.Element_List
is
Type_Def : Asis.Element;
Tmp_El : Asis.Element;
Result : Asis.Element := Nil_Element;
Arg_Node : Entity_Id;
Prim_Elmt : Elmt_Id;
Prim_Node : Entity_Id;
Res_Node : Node_Id;
begin
Check_Validity (Declaration,
Package_Name & "Corresponding_Overridden_Operations");
case Declaration_Kind (Declaration) is
when A_Procedure_Declaration |
A_Function_Declaration |
An_Expression_Function_Declaration |
A_Procedure_Instantiation |
A_Function_Instantiation |
A_Procedure_Body_Declaration |
A_Function_Body_Declaration |
A_Null_Procedure_Declaration |
A_Procedure_Renaming_Declaration |
A_Function_Renaming_Declaration =>
null;
when others =>
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name &
"Corresponding_Overridden_Operations",
Wrong_Kind => Int_Kind (Declaration));
end case;
if not Is_Overriding_Operation (Declaration) then
return Nil_Element_List;
end if;
-- Simple case: single inheritance:
Type_Def := Primitive_Owner (Declaration);
if Is_Nil (Definition_Interface_List (Type_Def)) then
return (1 => Corresponding_Overridden_Operation (Declaration));
end if;
-- General case - multiple inheritance
Asis_Element_Table.Init;
Tmp_El := First_Name (Declaration);
Arg_Node := R_Node (Tmp_El);
Tmp_El := First_Name (Enclosing_Element (Type_Def));
Prim_Elmt := First_Elmt (Primitive_Operations (R_Node (Tmp_El)));
Prim_Node := Node (Prim_Elmt);
while Present (Prim_Elmt) loop
-- Check if Prim_Node corresponds to overridden primitive:
if Present (Interface_Alias (Prim_Node))
and then
Alias (Prim_Node) = Arg_Node
then
Res_Node := Interface_Alias (Prim_Node);
-- ???
-- !!! Here we have to form the element representing overridden
-- subprogram and to add it to Asis_Element_Table
end if;
Prim_Elmt := Next_Elmt (Prim_Elmt);
Prim_Node := Node (Prim_Elmt);
end loop;
-- ???
Asis_Element_Table.Append
(Corresponding_Overridden_Operation (Declaration));
return Asis.Declaration_List
(Asis_Element_Table.Table (1 .. Asis_Element_Table.Last));
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 &
"Corresponding_Overridden_Operations");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name &
"Corresponding_Overridden_Operations",
Ex => Ex,
Arg_Element => Declaration);
end Corresponding_Overridden_Operations;
pragma Warnings (On);
-- function Corresponding_Overridden_Operations
-- (Declaration : Asis.Declaration)
-- return Asis.Element_List
-- is
-- Type_Def : Asis.Element;
-- Result : Asis.Element := Nil_Element;
-- begin
-- Check_Validity (Declaration,
-- Package_Name & "Corresponding_Overridden_Operations");
-- case Declaration_Kind (Declaration) is
-- when A_Procedure_Declaration |
-- A_Function_Declaration |
-- A_Procedure_Instantiation |
-- A_Function_Instantiation |
-- A_Procedure_Body_Declaration |
-- A_Function_Body_Declaration |
-- A_Procedure_Renaming_Declaration |
-- A_Function_Renaming_Declaration =>
-- null;
-- when others =>
-- Raise_ASIS_Inappropriate_Element
-- (Diagnosis => Package_Name &
-- "Corresponding_Overridden_Operations");
-- end case;
-- if not Is_Overriding_Operation (Declaration) then
-- return Nil_Element_List;
-- end if;
-- -- Simple case: single inheritance:
-- Type_Def := Primitive_Owner (Declaration);
-- if Is_Nil (Definition_Interface_List (Type_Def)) then
-- return (1 => Corresponding_Overridden_Operation (Declaration));
-- end if;
-- -- General case - multiple inheritance
-- declare
-- Interfaces : Asis.Element_List :=
-- Definition_Interface_List (Type_Def);
-- Start_From : Positive := Interfaces'First;
-- begin
-- Asis_Element_Table.Init;
-- Result := Corresponding_Overridden_Operation (Declaration);
-- Asis_Element_Table.Append (Result);
-- Type_Def := Primitive_Owner (Declaration);
-- -- First, replace each interface name in Interfaces with the
-- -- corresponding type definition and check if we may start further
-- -- processing not from the first interface in the list
-- for J in Interfaces'Range loop
-- Interfaces (J) :=
-- Type_Declaration_View
-- (Corresponding_Name_Definition
-- (Normalize_Reference (Interfaces (J))));
-- if Is_Equal (Interfaces (J), Type_Def) then
-- Start_From := J + 1;
-- end if;
-- end loop;
-- for J in Start_From .. Interfaces'Last loop
-- Result := Get_Implemented_Op (Declaration, Interfaces (J));
-- if not Is_Nil (Result) then
-- Asis_Element_Table.Append (Result);
-- end if;
-- end loop;
-- return Asis.Declaration_List
-- (Asis_Element_Table.Table (1 .. Asis_Element_Table.Last));
-- end;
-- 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 &
-- "Corresponding_Overridden_Operations");
-- end if;
-- raise;
-- when Ex : others =>
-- Report_ASIS_Bug
-- (Query_Name => Package_Name &
-- "Corresponding_Overridden_Operations",
-- Ex => Ex,
-- Arg_Element => Declaration);
-- end Corresponding_Overridden_Operations;
----------------------------------------------
-- Corresponding_Parent_Subtype_Unwind_Base --
----------------------------------------------
function Corresponding_Parent_Subtype_Unwind_Base
(Type_Definition : Asis.Type_Definition)
return Asis.Declaration
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Type_Definition);
Arg_Elem : Asis.Element := Type_Definition;
Result : Asis.Element := Nil_Element;
begin
Check_Validity (Type_Definition,
Package_Name &
"Corresponding_Parent_Subtype_Unwind_Base");
if not (Arg_Kind = A_Derived_Type_Definition or else
Arg_Kind = A_Derived_Record_Extension_Definition)
then
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name &
"Corresponding_Parent_Subtype_Unwind_Base",
Wrong_Kind => Arg_Kind);
end if;
Result := Corresponding_Parent_Subtype (Arg_Elem);
if Is_Nil (Result) then
-- The only possible case for this - we have a 'Base attribute
-- reference as a parent subtype mark
Arg_Elem := Parent_Subtype_Indication (Arg_Elem);
Arg_Elem := Asis.Definitions.Subtype_Mark (Arg_Elem);
while Attribute_Kind (Arg_Elem) = A_Base_Attribute loop
Arg_Elem := Prefix (Arg_Elem);
end loop;
if Expression_Kind (Arg_Elem) = A_Selected_Component then
Arg_Elem := Selector (Arg_Elem);
end if;
Arg_Elem := Corresponding_Name_Declaration (Arg_Elem);
if Declaration_Kind (Result) = A_Subtype_Declaration then
Result := Corresponding_First_Subtype (Arg_Elem);
else
Result := Arg_Elem;
end if;
end if;
return Result;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Type_Definition,
Outer_Call => Package_Name &
"Corresponding_Parent_Subtype_Unwind_Base");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name &
"Corresponding_Parent_Subtype_Unwind_Base",
Ex => Ex,
Arg_Element => Type_Definition);
end Corresponding_Parent_Subtype_Unwind_Base;
----------------------
-- CU_Requires_Body --
----------------------
function CU_Requires_Body (Right : Asis.Compilation_Unit) return Boolean is
Unit_Kind : constant Asis.Unit_Kinds := Kind (Right);
Result : Boolean := False;
begin
Check_Validity (Right, Package_Name & "CU_Requires_Body");
Reset_Context (Encl_Cont_Id (Right));
case Unit_Kind is
when A_Generic_Procedure |
A_Generic_Function |
A_Procedure |
A_Function |
A_Package |
A_Generic_Package =>
Result := Asis.Set_Get.Is_Body_Required (Right);
when others =>
null;
end case;
return Result;
end CU_Requires_Body;
----------------
-- Denotation --
----------------
function Denotation
(Reference : Asis.Expression)
return Asis.Defining_Name is
begin
if Int_Kind (Reference) = A_Selected_Component then
return Denotation (Selector (Reference));
else
return Corresponding_Name_Definition (Reference);
end if;
end Denotation;
---------------------------
-- Elements_Hash_Wrapper --
---------------------------
function Elements_Hash_Wrapper
(E : Asis.Element)
return Ada.Containers.Hash_Type
is
use Ada.Containers;
Asis_Hash : constant Asis.ASIS_Integer := abs Asis.Elements.Hash (E);
Result : Ada.Containers.Hash_Type;
begin
Result := Ada.Containers.Hash_Type (Asis_Hash);
return Result;
exception
when Constraint_Error =>
return 0;
end Elements_Hash_Wrapper;
-------------------------------
-- Element_Image_In_Template --
-------------------------------
function Element_Image_In_Template
(Element : Asis.Element)
return Program_Text
is
Tmp_Element : Asis.Element := Element;
begin
Check_Validity (Element, Package_Name & "Element_Image_In_Template");
if Is_Part_Of_Implicit (Element) or else
not Is_Part_Of_Instance (Element)
then
return "";
else
-- What we are doing is tricky, but it gives the fast and
-- easy-to-maintain solution: we consider the argument as if it is
-- NOT from the expanded template, and we use the normal ASIS
-- Element_Span function for it. The idea is to use Sloc fields
-- from the element node which point to the corresponding positions
-- in the template.
Set_From_Instance (Tmp_Element, False);
return Element_Image (Tmp_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 & "Element_Image_In_Template");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Element_Image_In_Template",
Ex => Ex,
Arg_Element => Element);
end Element_Image_In_Template;
------------------------------
-- Element_Span_In_Template --
------------------------------
function Element_Span_In_Template
(Element : Asis.Element)
return Asis.Text.Span
is
Tmp_Element : Asis.Element := Element;
begin
Check_Validity (Element, Package_Name & "Element_Span_In_Template");
if Is_Part_Of_Implicit (Element) or else
not Is_Part_Of_Instance (Element)
then
return Nil_Span;
else
-- What we are doing is tricky, but it gives the fast and
-- easy-to-maintain solution: we consider the argument as if it is
-- NOT from the expanded template, and we use the normal ASIS
-- Element_Span function for it. The idea is to use Sloc fields
-- from the element node which point to the corresponding positions
-- in the template.
Set_From_Instance (Tmp_Element, False);
return Element_Span (Tmp_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 & "Element_Span_In_Template");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Element_Span_In_Template",
Ex => Ex,
Arg_Element => Element);
end Element_Span_In_Template;
-----------------------------
-- Explicit_Type_Operators --
-----------------------------
function Explicit_Type_Operators
(Type_Definition : Asis.Type_Definition)
return Asis.Declaration_List
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Type_Definition);
Parent_El : Asis.Element;
-- The construct where the argument type is defined
Type_Decl : Asis.Element;
-- Declaration of the argument type
In_Package_Spec : Boolean;
-- If the argument type is declared not in a package spec, but it is
-- a derived type, we have to count all the explicit overridings of
-- inherited operators, but if we are in the package spec, we just
-- collect all the explicitly declared type operators
Is_Formal_Type : Boolean;
begin
Check_Validity (Type_Definition,
Package_Name & "Explicit_Type_Operators");
if not (Arg_Kind in Internal_Type_Kinds or else
Arg_Kind in Internal_Formal_Type_Kinds or else
Arg_Kind in A_Private_Type_Definition ..
A_Protected_Definition)
then
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name & "Explicit_Type_Operators",
Wrong_Kind => Arg_Kind);
end if;
Type_Decl := Enclosing_Element (Type_Definition);
Parent_El := Enclosing_Element (Type_Decl);
Is_Formal_Type := Arg_Kind in Internal_Formal_Type_Kinds;
In_Package_Spec :=
Declaration_Kind (Parent_El) = A_Package_Declaration or else
(not Is_Formal_Type and then
Declaration_Kind (Parent_El) = A_Formal_Package_Declaration);
declare
All_Comp : constant Asis.Element_List := Components (Parent_El);
Start_From : Natural;
Result : Asis.Element_List (All_Comp'Range);
Res_First : constant Natural := Result'First;
Res_Last : Natural := Res_First - 1;
begin
for J in All_Comp'Range loop
if Is_Equal (Type_Decl, All_Comp (J)) then
Start_From := J + 1;
exit;
end if;
end loop;
for J in Start_From .. All_Comp'Last loop
if Is_Formal_Type
and then
Declaration_Kind (All_Comp (J)) not in A_Formal_Declaration
then
exit;
end if;
if Is_Type_Operator (All_Comp (J), Type_Decl)
and then
(In_Package_Spec
or else
Overrides_Type_Operator (All_Comp (J), Type_Decl))
then
Res_Last := Res_Last + 1;
Result (Res_Last) := All_Comp (J);
if Is_Bool_Eq_Declaration (All_Comp (J)) then
Res_Last := Res_Last + 1;
Result (Res_Last) :=
Corresponding_Equality_Operator (All_Comp (J));
end if;
end if;
end loop;
return Result (Res_First .. Res_Last);
end;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Type_Definition,
Outer_Call => Package_Name & "Explicit_Type_Operators");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Explicit_Type_Operators",
Ex => Ex,
Arg_Element => Type_Definition);
end Explicit_Type_Operators;
----------------
-- First_Name --
----------------
function First_Name (Dcl : Asis.Element) return Asis.Element is
Name_List : constant Asis.Element_List := Names (Dcl);
begin
return Name_List (Name_List'First);
end First_Name;
-------------------------------
-- Formal_Subprogram_Default --
-------------------------------
function Formal_Subprogram_Default
(Declaration : Asis.Generic_Formal_Parameter)
return Asis.Expression
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Declaration);
Arg_Node : Node_Id;
Res_Node : Node_Id;
Result : Asis.Element;
begin
Arg_Node := Node (Declaration);
Check_Validity (Declaration, Package_Name & "Formal_Subprogram_Default");
if not (Arg_Kind = A_Formal_Procedure_Declaration or else
Arg_Kind = A_Formal_Function_Declaration)
then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Formal_Subprogram_Default",
Wrong_Kind => Arg_Kind);
end if;
if not Present (Default_Name (Arg_Node)) then
return Nil_Element;
end if;
Res_Node := Default_Name (Arg_Node);
Result := Node_To_Element_New
(Node => Res_Node,
Starting_Element => Declaration);
if Int_Kind (Result) = A_Function_Call
or else
Int_Kind (Result) = A_Procedure_Call_Statement
then
Set_Int_Kind (Result, Subprogram_Attribute_Kind (Res_Node));
end if;
return Result;
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 & "Formal_Subprogram_Default");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Formal_Subprogram_Default",
Ex => Ex,
Arg_Element => Declaration);
end Formal_Subprogram_Default;
---------------------
-- Full_Name_Image --
---------------------
function Full_Name_Image
(Expression : Asis.Expression)
return Program_Text
is
begin
case Expression_Kind (Expression) is
when An_Identifier .. An_Enumeration_Literal =>
return Asis.Expressions.Name_Image (Expression);
when A_Selected_Component =>
return Full_Name_Image (Prefix (Expression)) & '.' &
Asis.Expressions.Name_Image (Selector (Expression));
when others =>
Raise_ASIS_Inappropriate_Element
(Package_Name & "Full_Name_Image",
Wrong_Kind => Int_Kind (Expression));
end case;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Expression,
Outer_Call => Package_Name & "Full_Name_Image");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Full_Name_Image",
Ex => Ex,
Arg_Element => Expression);
end Full_Name_Image;
-------------------------
-- Get_Call_Parameters --
-------------------------
package body Generic_Enum_Conversion is
type Table_Type is array (From) of To;
function Slow_Convert (X : From) return To;
function Init_Table return Table_Type;
----------------
-- Init_Table --
----------------
function Init_Table return Table_Type is
begin
return Result : Table_Type do
for F in From loop
Result (F) := Slow_Convert (F);
end loop;
end return;
end Init_Table;
------------------
-- Slow_Convert --
------------------
function Slow_Convert (X : From) return To is
begin
return To'Value (From'Image (X));
exception
when Constraint_Error =>
return Default;
end Slow_Convert;
-------------
-- Convert --
-------------
Table : constant Table_Type := Init_Table;
function Convert (X : From) return To is
begin
return Table (X);
end Convert;
end Generic_Enum_Conversion;
-------------------------
-- Get_Call_Parameters --
-------------------------
function Get_Call_Parameters
(Call : Asis.Element;
Normalized : Boolean := False)
return Asis.Element_List
is
begin
if Expression_Kind (Call) = A_Function_Call then
return Function_Call_Parameters (Call, Normalized);
else
return Call_Statement_Parameters (Call, Normalized);
end if;
end Get_Call_Parameters;
------------------------
-- Get_Implemented_Op --
------------------------
-- Under construction!
function Get_Implemented_Op
(Op_Decl : Asis.Element;
Type_Def : Asis.Element)
return Asis.Element
is
pragma Unreferenced (Op_Decl, Type_Def);
begin
return Nil_Element;
end Get_Implemented_Op;
-- function Get_Implemented_Op
-- (Op_Decl : Asis.Element;
-- Type_Def : Asis.Element)
-- return Asis.Element
-- is
-- Result : Asis.Element := Nil_Element;
-- Look_For_Proc : constant Boolean := Is_Procedure (Op_Decl);
-- Primitives : constant Asis.Element_List := Get_Primitives (Type_Def);
-- Arg_Chars : Name_Id;
-- Res_Chars : Name_Id;
-- Tmp_Node : Node_Id;
-- Tmp_El1 : Asis.Element;
-- Tmp_El2 : Asis.Element;
-- Success : Boolean;
-- Is_Controlling : Boolean;
-- Arg_Params : constant Asis.Element_List := Parameter_Profile (Op_Decl);
-- begin
-- Tmp_El := First_Name (Decl);
-- Arg_Chars := Chars (R_Node (Tmp_El));
-- Scan_Primitives : for J in Primitives'Range loop
-- if Look_For_Proc xor Is_Procedure (Primitives (J)) then
-- Res_Chars := Chars (R_Node (First_Name (Primitives (J))));
-- if Res_Chars = Arg_Chars
-- and then
-- Arg_Params'Length = Parameter_Profile (Primitives (J))'Length
-- then
-- -- Check parameter profiles:
-- Success := True;
-- if not Look_For_Proc then
-- -- Check for the result type
-- Tmp_El1 := First_Name (Op_Decl);
-- Tmp_El2 := First_Name (Primitives (J));
-- if Has_Controlling_Result (R_Node (Tmp_El1)) xor
-- Has_Controlling_Result (R_Node (Tmp_El2))
-- then
-- Success := False;
-- else
-- Is_Controlling :=
-- Has_Controlling_Result (R_Node (Tmp_El1));
-- Tmp_El1 := Result_Profile (Op_Decl);
-- Tmp_El2 := Result_Profile (Primitives (J));
-- if Definition_Kind (Tmp_El1) = An_Access_Definition
-- xor
-- Definition_Kind (Tmp_El2) = An_Access_Definition
-- then
-- Success := False;
-- elsif not Is_Controlling then
-- Succes := Are_Type_Conforming (Tmp_El1, Tmp_El2);
-- end if;
-- end if;
-- end if;
-- end if;
-- if Success then
-- declare
-- Res_Params : constant Asis.Element_List :=
-- Parameter_Profile (Primitives (J));
-- begin
-- Scan_Params : for P in Arg_Params'Range loop
-- if not Are_Conformant
-- (Arg_Params (P), Res_Params (P))
-- then
-- Success := False;
-- exit Scan_Params;
-- end if;
-- end loop;
-- end;
-- end if;
-- if Success then
-- Result := Primitives (J)
-- exit Scan_Primitives;
-- end if;
-- end if;
-- end if;
-- end loop Scan_Primitives;
-- return Result;
-- end Get_Implemented_Op;
------------------------
-- Get_Last_Component --
------------------------
function Get_Last_Component (E : Asis.Element) return Asis.Element is
Child_Access : constant Func_Elem_Array := Appropriate_Queries (E);
Child : Asis.Element := Asis.Nil_Element;
begin
Check_Validity (E, Package_Name & "Get_Last_Component");
if Is_Nil (E) then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Get_Last_Component",
Wrong_Kind => Not_An_Element);
end if;
if Debug_Flag_X then
Write_Str (" Get_Last_Component - called for ");
Write_Str (Internal_Element_Kinds'Image (Int_Kind (E)));
Write_Eol;
end if;
for Each_Query in reverse Child_Access'Range loop
case Child_Access (Each_Query).Query_Kind is
when Bug | Boolean_Query | CU_Query_Kinds =>
null;
when Single_Element_Query =>
Child := Child_Access (Each_Query).Func_Simple (E);
when Element_List_Query =>
declare
Child_List : constant Asis.Element_List :=
Child_Access (Each_Query).Func_List (E);
begin
if not Is_Nil (Child_List) then
Child := Child_List (Child_List'Last);
end if;
end;
when Element_List_Query_With_Boolean =>
declare
Child_List : constant Asis.Element_List :=
Child_Access (Each_Query).Func_List_Boolean
(E, Child_Access (Each_Query).Bool);
begin
if not Is_Nil (Child_List) then
Child := Child_List (Child_List'Last);
end if;
end;
end case;
exit when not Is_Nil (Child);
end loop;
if Debug_Flag_X then
Write_Str (" Get_Last_Component - returns ");
Write_Str (Internal_Element_Kinds'Image (Int_Kind (Child)));
Write_Eol;
end if;
return Child;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => E,
Outer_Call => Package_Name & "Get_Last_Component");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Get_Last_Component",
Ex => Ex,
Arg_Element => E);
end Get_Last_Component;
-----------------------
-- Get_LF_From_Ureal --
-----------------------
function Get_LF_From_Ureal (U : Ureal) return Long_Long_Float is
Result : Long_Long_Float;
Base : constant Nat := Rbase (U);
U_Num : constant Uint := Numerator (U);
U_Denum : constant Uint := Denominator (U);
Num : Long_Long_Integer;
Denum : Long_Long_Integer;
begin
UI_Image (U_Num, Format => Decimal);
Num := Long_Long_Integer'Value (UI_Image_Buffer (1 .. UI_Image_Length));
UI_Image (U_Denum, Format => Decimal);
Denum :=
Long_Long_Integer'Value (UI_Image_Buffer (1 .. UI_Image_Length));
if Base /= 0 then
Denum := Long_Long_Integer (2 ** Natural (Denum));
end if;
Result := Long_Long_Float (Num) / Long_Long_Float (Denum);
if UR_Is_Negative (U) then
Result := -Result;
end if;
return Result;
end Get_LF_From_Ureal;
------------------------
-- Has_Anonymous_Type --
------------------------
function Has_Anonymous_Type
(Expression : Asis.Expression)
return Boolean
is
Expr_Type : Entity_Id;
Result : Boolean := False;
begin
-- We assume that Is_True_Expression (Expression) is True!
Expr_Type := R_Node (Expression);
if Nkind (Parent (Expr_Type)) = N_Expanded_Name
and then
Expr_Type = Selector_Name (Parent (Expr_Type))
then
Expr_Type := Parent (Expr_Type);
end if;
Expr_Type := Etype (Expr_Type);
pragma Assert (Present (Expr_Type));
while Etype (Expr_Type) /= Expr_Type loop
Expr_Type := Etype (Expr_Type);
end loop;
if Is_Itype (Expr_Type)
and then
Nkind (Associated_Node_For_Itype (Expr_Type)) not in
N_Full_Type_Declaration |
N_Formal_Type_Declaration |
N_Private_Type_Declaration |
N_Private_Extension_Declaration |
N_Task_Type_Declaration |
N_Protected_Type_Declaration
then
Result := True;
end if;
return Result;
end Has_Anonymous_Type;
----------------------------
-- Has_Controlling_Result --
----------------------------
function Has_Controlling_Result
(Declaration : Asis.Declaration)
return Boolean
is
Entity : Entity_Id;
Result : Boolean := False;
begin
Check_Validity
(Declaration,
Package_Name & "Has_Controlling_Result");
if Is_Dispatching_Operation (Declaration) then
Entity := Defining_Unit_Name (Specification (Node (Declaration)));
if Ekind (Entity) = E_Function then
Result := Has_Controlling_Result (Entity);
end if;
end if;
return Result;
end Has_Controlling_Result;
--------------------------
-- Has_Enumeration_Type --
--------------------------
function Has_Enumeration_Type
(Expression : Asis.Expression)
return Boolean
is
Result : Boolean := False;
begin
Check_Validity (Expression, Package_Name & "Has_Enumeration_Type");
if Ekind (Etype (R_Node (Expression))) in Enumeration_Kind then
Result := True;
end if;
return Result;
end Has_Enumeration_Type;
----------------------
-- Has_Integer_Type --
----------------------
function Has_Integer_Type (Expression : Asis.Expression) return Boolean is
Result : Boolean := False;
begin
Check_Validity (Expression, Package_Name & "Has_Integer_Type");
if Ekind (Etype (R_Node (Expression))) in Integer_Kind then
Result := True;
end if;
return Result;
end Has_Integer_Type;
------------------------------
-- Inherited_Type_Operators --
------------------------------
function Inherited_Type_Operators
(Type_Definition : Asis.Type_Definition)
return Asis.Declaration_List
is
Arg_Kind : constant Internal_Element_Kinds :=
Int_Kind (Type_Definition);
Type_Decl : Asis.Element;
begin
Check_Validity (Type_Definition,
Package_Name & "Inherited_Type_Operators");
if not (Arg_Kind in Internal_Type_Kinds or else
Arg_Kind in Internal_Formal_Type_Kinds or else
Arg_Kind in A_Private_Type_Definition ..
A_Protected_Definition)
then
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name & "Inherited_Type_Operators",
Wrong_Kind => Arg_Kind);
end if;
if not (Arg_Kind = A_Private_Extension_Definition or else
Arg_Kind = A_Derived_Type_Definition or else
Arg_Kind = A_Derived_Record_Extension_Definition or else
Arg_Kind = A_Formal_Derived_Type_Definition)
then
return Nil_Element_List;
end if;
declare
All_Inherited_Ops : constant Asis.Declaration_List :=
Implicit_Inherited_Subprograms (Type_Definition);
Result : Asis.Declaration_List (All_Inherited_Ops'Range);
Res_First : constant Natural := Result'First;
Res_Last : Natural := Res_First - 1;
begin
Type_Decl := Enclosing_Element (Type_Definition);
for J in All_Inherited_Ops'Range loop
if Is_Type_Operator (All_Inherited_Ops (J), Type_Decl) then
Res_Last := Res_Last + 1;
Result (Res_Last) := All_Inherited_Ops (J);
end if;
end loop;
return Result (Res_First .. Res_Last);
end;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Type_Definition,
Outer_Call => Package_Name & "Inherited_Type_Operators");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Inherited_Type_Operators",
Ex => Ex,
Arg_Element => Type_Definition);
end Inherited_Type_Operators;
--------------------
-- Is_Aspect_Mark --
--------------------
function Is_Aspect_Mark (Element : Asis.Element) return Boolean is
Result : Boolean := False;
Tmp : Node_Id;
begin
if Expression_Kind (Element) = An_Identifier or else
Attribute_Kind (Element) = A_Class_Attribute
then
Tmp := R_Node (Element);
Result := Nkind (Parent (Tmp)) = N_Aspect_Specification and then
Tmp = Sinfo.Identifier (Parent (Tmp));
end if;
return Result;
end Is_Aspect_Mark;
-----------------------------
-- Is_Aspect_Specific_Name --
-----------------------------
function Is_Aspect_Specific_Name (Element : Asis.Element) return Boolean is
Result : Boolean := False;
Tmp : Node_Id;
begin
if Expression_Kind (Element) in An_Identifier | A_Character_Literal then
Tmp := R_Node (Element);
if Nkind (Tmp) in N_Identifier | N_Character_Literal
and then
not Present (Entity (Tmp))
then
Tmp := Parent (Tmp);
if Present (Tmp) then
case Nkind (Tmp) is
when N_Component_Association =>
Tmp := Parent (Parent (Tmp));
while Nkind (Tmp) in
N_Aggregate | N_Component_Association
loop
Tmp := Parent (Tmp);
end loop;
if Nkind (Tmp) = N_Aspect_Specification then
Result := True;
end if;
when N_Aspect_Specification =>
Result := R_Node (Element) /= Sinfo.Identifier (Tmp);
-- ... to be continued...
when others =>
null;
end case;
end if;
end if;
end if;
return Result;
end Is_Aspect_Specific_Name;
function Is_Assertion (Element : Asis.Element) return Boolean is
Result : Boolean := False;
A_Mark : Asis.Element;
begin
case Int_Kind (Element) is
when An_Assert_Pragma =>
Result := True;
when An_Implementation_Defined_Pragma =>
declare
Pragma_Name : constant String :=
To_Lower (To_String (Pragma_Name_Image (Element)));
begin
Result := Pragma_Name = "assert_and_cut" or else
Pragma_Name = "assume" or else
Pragma_Name = "contract_cases" or else
Pragma_Name = "debug" or else
Pragma_Name = "invariant" or else
Pragma_Name = "loop_invariant" or else
Pragma_Name = "loop_variant" or else
Pragma_Name = "postcondition" or else
Pragma_Name = "precondition" or else
Pragma_Name = "predicate" or else
Pragma_Name = "refined_post";
end;
when An_Aspect_Specification =>
A_Mark := Aspect_Mark (Element);
if Expression_Kind (A_Mark) = An_Attribute_Reference then
A_Mark := Prefix (A_Mark);
end if;
declare
Aspect_Name : constant String :=
To_Lower (To_String (Asis.Expressions.Name_Image (A_Mark)));
begin
Result := Aspect_Name = "static_predicate" or else
Aspect_Name = "dynamic_predicate" or else
Aspect_Name = "pre" or else
Aspect_Name = "post" or else
Aspect_Name = "type_invariant" or else
Aspect_Name = "contract_cases" or else
Aspect_Name = "invariant" or else
Aspect_Name = "predicate" or else
Aspect_Name = "refined_post";
end;
when others => null;
end case;
return Result;
end Is_Assertion;
----------------------------
-- Is_Bool_Eq_Declaration --
----------------------------
function Is_Bool_Eq_Declaration
(Declaration : Asis.Element)
return Boolean
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Declaration);
Result : Boolean := False;
Op_Node : Node_Id;
Op_Etype : Node_Id;
begin
Check_Validity (Declaration, Package_Name & "Is_Bool_Eq_Declaration");
if Special_Case (Declaration) /= Is_From_Imp_Neq_Declaration
and then
(Arg_Kind = A_Function_Declaration
or else
(Arg_Kind in
A_Function_Body_Declaration | An_Expression_Function_Declaration
and then
Acts_As_Spec (Declaration))
or else
(Arg_Kind = A_Function_Renaming_Declaration
and then
not Is_Renaming_As_Body (Declaration)))
then
if Is_Part_Of_Inherited (Declaration) then
Op_Node := Node_Field_1 (Declaration);
else
Op_Node :=
Defining_Unit_Name (Specification (Node (Declaration)));
end if;
if Nkind (Op_Node) = N_Defining_Program_Unit_Name then
Op_Node := Defining_Identifier (Op_Node);
end if;
Op_Etype := Etype (Op_Node);
while Etype (Op_Etype) /= Op_Etype loop
Op_Etype := Etype (Op_Etype);
end loop;
if Is_Generic_Instance (Op_Node) then
Op_Node :=
Defining_Unit_Name (Node (Enclosing_Element (Declaration)));
end if;
if Nkind (Op_Node) = N_Defining_Program_Unit_Name then
Op_Node := Defining_Identifier (Op_Node);
end if;
if Nkind (Op_Node) = N_Defining_Operator_Symbol
and then
Chars (Op_Node) = Name_Op_Eq
and then
Op_Etype = Standard_Boolean
then
Result := True;
end if;
end if;
return Result;
end Is_Bool_Eq_Declaration;
------------------------------------------
-- Is_Call_Through_Access_To_Subprogram --
------------------------------------------
function Is_Call_Through_Access_To_Subprogram
(Call : Asis.Element)
return Boolean
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Call);
Arg_Node : Node_Id;
Result : Boolean := False;
begin
if Arg_Kind in A_Procedure_Call_Statement | A_Function_Call then
Arg_Node := R_Node (Call);
if Nkind (Arg_Node) in
N_Function_Call | N_Procedure_Call_Statement
then
-- To skip the cases when the result is for sure FALSE
Arg_Node := Sinfo.Name (Arg_Node);
Result := Nkind (Arg_Node) = N_Explicit_Dereference;
end if;
end if;
return Result;
end Is_Call_Through_Access_To_Subprogram;
-------------------
-- Is_Check_Name --
-------------------
function Is_Check_Name
(Reference : Asis.Expression)
return Boolean
is
Result : Boolean := False;
Arg_Node : Node_Id;
begin
if Expression_Kind (Reference) = An_Identifier then
Arg_Node := R_Node (Reference);
if Nkind (Arg_Node) = N_Identifier and then
No (Entity (Arg_Node))
then
Arg_Node := Parent (Arg_Node);
case Nkind (Arg_Node) is
when N_Attribute_Reference =>
Result := Attribute_Name (Arg_Node) = Name_Enabled;
when N_Pragma_Argument_Association =>
Arg_Node := Original_Node (Parent (Arg_Node));
Result :=
Chars (Pragma_Identifier (Arg_Node)) = Name_Check_Name;
when others =>
null;
end case;
end if;
end if;
return Result;
end Is_Check_Name;
-------------------
-- Is_Class_Wide --
-------------------
function Is_Class_Wide
(Declaration : Asis.Declaration)
return Boolean
is
Result : Boolean := False;
Subtype_Entity : Entity_Id;
begin
if Declaration_Kind (Declaration) = A_Subtype_Declaration then
Subtype_Entity := R_Node (Declaration);
Subtype_Entity := Defining_Identifier (Subtype_Entity);
Result := Ekind (Subtype_Entity) = E_Class_Wide_Subtype;
end if;
return Result;
end Is_Class_Wide;
------------------
-- Is_Completed --
------------------
function Is_Completed (Declaration : Asis.Element) return Boolean is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Declaration);
Arg_Node : Node_Id;
Result : Boolean := False;
begin
Check_Validity (Declaration, Package_Name & "Is_Completed");
-- JUNK IMPLEMENTATION!!!
if not (Arg_Kind = A_Procedure_Declaration or else
Arg_Kind = A_Function_Declaration)
or else
Is_Part_Of_Inherited (Declaration)
then
return False;
end if;
Arg_Node := Defining_Unit_Name (Specification (Node (Declaration)));
Result := Has_Completion (Arg_Node);
return Result;
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 & "Is_Completed");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Is_Completed",
Ex => Ex,
Arg_Element => Declaration);
end Is_Completed;
-----------------------------------
-- Is_Default_For_Null_Procedure --
-----------------------------------
function Is_Default_For_Null_Procedure
(Reference : Asis.Element)
return Boolean
is
Result : Boolean := False;
Tmp : Node_Id;
begin
if Expression_Kind (Reference) = An_Identifier
and then
Is_Part_Of_Instance (Reference)
then
Tmp := R_Node (Reference);
if Nkind (Tmp) in N_Has_Entity then
Tmp := Entity (Tmp);
if Present (Tmp) and then Ekind (Tmp) = E_Procedure then
Tmp := Parent (Parent (Tmp));
Result :=
Nkind (Tmp) = N_Subprogram_Body
and then
Nkind (Parent (Tmp)) = N_Package_Specification;
end if;
end if;
end if;
return Result;
end Is_Default_For_Null_Procedure;
-------------------------
-- Is_Definite_Subtype --
-------------------------
function Is_Definite_Subtype (Declaration : Asis.Element) return Boolean is
Result : Boolean := False;
Type_Entity : Entity_Id;
begin
if Declaration_Kind (Declaration) in
An_Ordinary_Type_Declaration |
A_Task_Type_Declaration |
A_Protected_Type_Declaration |
A_Private_Type_Declaration |
A_Private_Extension_Declaration |
A_Subtype_Declaration |
A_Formal_Type_Declaration
then
Type_Entity := Defining_Identifier (Node (Declaration));
Result := Ekind (Type_Entity) in Discrete_Kind
or else Is_Constrained (Type_Entity);
end if;
return Result;
end Is_Definite_Subtype;
----------------------------
-- Is_Expanded_Subprogram --
----------------------------
function Is_Expanded_Subprogram (N : Node_Id) return Boolean is
Result : Boolean := False;
Tmp : Node_Id;
begin
if Nkind (N) = N_Subprogram_Declaration then
Tmp := Defining_Unit_Name (Specification (N));
if Nkind (Tmp) = N_Defining_Program_Unit_Name then
Tmp := Defining_Identifier (Tmp);
end if;
if Is_Generic_Instance (Tmp) then
Result := True;
end if;
end if;
return Result;
end Is_Expanded_Subprogram;
-----------------
-- Is_Exported --
-----------------
function Is_Exported (Defining_Name : Asis.Defining_Name) return Boolean is
Arg_Node : Node_Id;
Tmp : Node_Id;
Result : Boolean := False;
begin
Check_Validity (Defining_Name, Package_Name & "Is_Exported");
if Int_Kind (Defining_Name) not in Internal_Defining_Name_Kinds then
return False;
end if;
Arg_Node := R_Node (Defining_Name);
if Nkind (Arg_Node) = N_Defining_Program_Unit_Name then
Arg_Node := Defining_Identifier (Arg_Node);
end if;
if Ekind (Arg_Node) = E_Subprogram_Body then
-- Go to the corresponding spec entity
Tmp := Parent (Arg_Node);
while Nkind (Tmp) not in N_Subprogram_Specification loop
Tmp := Parent (Tmp);
end loop;
Tmp := Parent (Tmp);
Tmp := Corresponding_Decl_Node (Tmp);
Arg_Node := Defining_Unit_Name (Specification (Tmp));
if Nkind (Arg_Node) = N_Defining_Program_Unit_Name then
Arg_Node := Defining_Identifier (Arg_Node);
end if;
end if;
Result := Is_Exported (Arg_Node);
return Result;
end Is_Exported;
-------------------------------------
-- Is_From_Import_Procedure_Pragma --
-------------------------------------
function Is_From_Import_Procedure_Pragma (N : Node_Id) return Boolean is
Tmp : Node_Id := Parent (N);
Result : Boolean := False;
begin
if Nkind (Tmp) = N_Indexed_Component then
Tmp := Parent (Tmp);
if Nkind (Tmp) = N_Aggregate then
Tmp := Parent (Tmp);
if Nkind (Tmp) = N_Pragma_Argument_Association then
Tmp := Pragma_Identifier (Parent (Tmp));
Result := Chars (Tmp) = Name_Import_Procedure
or else
Chars (Tmp) = Name_Import_Valued_Procedure;
end if;
end if;
end if;
return Result;
end Is_From_Import_Procedure_Pragma;
--------------------------
-- Is_From_SPARK_Aspect --
--------------------------
function Is_From_SPARK_Aspect (E : Asis.Element) return Boolean is
Result : Boolean := False;
N : Node_Id;
begin
-- If and when we get a flag in the tree that marks SPARK-specific
-- aspects, this code should be replaced with the use of this flag!
if not Is_Nil (E) then
N := R_Node (E);
loop
exit when No (N) or else
Nkind (N) in
N_Pragma | N_Aspect_Specification |
N_Statement_Other_Than_Procedure_Call |
N_Procedure_Call_Statement | N_Declaration;
N := Parent (N);
end loop;
if Nkind (N) = N_Pragma then
if Present (Corresponding_Aspect (N)) then
N := Corresponding_Aspect (N);
end if;
end if;
if Nkind (N) in N_Aspect_Specification | N_Pragma then
N := (if Nkind (N) = N_Aspect_Specification then
Sinfo.Identifier (N)
else
Pragma_Identifier (N));
Result := Chars (N) in Name_Abstract_State |
Name_Depends |
Name_Global |
Name_Initial_Condition |
Name_Initializes |
Name_Refined_Depends |
Name_Refined_Global |
Name_Refined_Post |
Name_Refined_State;
end if;
end if;
return Result;
end Is_From_SPARK_Aspect;
-----------------------------------------------
-- Is_Sub_Package_Implemented_As_Child_Unit --
-----------------------------------------------
function Is_Sub_Package_Implemented_As_Child_Unit
(Compilation_Unit : Asis.Compilation_Unit)
return Boolean
is
Nam : Node_Id;
Prf : Node_Id;
Sel : Node_Id;
Result : Boolean := False;
begin
-- See Rtsfind.Is_Text_IO_Special_Unit
if Unit_Class (Compilation_Unit) in
A_Private_Declaration | A_Private_Body
and then
(Unit_Kind (Compilation_Unit) = A_Generic_Package
or else
(Unit_Kind (Compilation_Unit) = A_Package_Body
and then
Unit_Kind (Corresponding_Declaration (Compilation_Unit)) =
A_Generic_Package))
then
Nam := Unit (Top (Compilation_Unit));
if Nkind (Nam) = N_Generic_Package_Declaration then
Nam := Specification (Nam);
end if;
Nam := Defining_Unit_Name (Nam);
if Nkind (Nam) = N_Defining_Program_Unit_Name then
Prf := Sinfo.Name (Nam);
Sel := Defining_Identifier (Nam);
if Nkind (Sel) = N_Defining_Identifier
and then
Nkind (Prf) = N_Expanded_Name
and then
Chars (Sel) in Text_IO_Package_Name
then
Sel := Selector_Name (Prf);
Prf := Prefix (Prf);
Result :=
Nkind (Prf) = N_Identifier
and then
Chars (Prf) = Name_Ada
and then
Nkind (Sel) = N_Identifier
and then
Chars (Sel) in
Name_Text_IO | Name_Wide_Text_IO | Name_Wide_Wide_Text_IO;
end if;
end if;
end if;
return Result;
end Is_Sub_Package_Implemented_As_Child_Unit;
---------------------------------
-- Is_Implicit_Neq_Declaration --
---------------------------------
function Is_Implicit_Neq_Declaration
(Declaration : Asis.Element)
return Boolean
is
begin
return
Declaration_Kind (Declaration) = A_Function_Declaration
and then
Special_Case (Declaration) = Is_From_Imp_Neq_Declaration;
end Is_Implicit_Neq_Declaration;
--------------
-- Is_Label --
--------------
function Is_Label (Defining_Name : Asis.Defining_Name) return Boolean is
N : constant Node_Id := Node (Defining_Name);
Result : Boolean := False;
begin
if Int_Kind (Defining_Name) = A_Defining_Identifier then
if Nkind (N) = N_Label then
Result := True;
elsif Nkind (N) = N_Identifier
and then
Nkind (Parent (N)) = N_Loop_Statement
and then
Nkind (Original_Node (Parent (N))) = N_Goto_Statement
then
-- An infinite loop is implemented with goto statement
Result := True;
end if;
end if;
return Result;
end Is_Label;
--------------------------
-- Is_Main_Unit_In_Tree --
--------------------------
function Is_Main_Unit_In_Tree
(Right : Asis.Compilation_Unit)
return Boolean
is
Arg_Kind : constant Unit_Kinds := Kind (Right);
Arg_Unit_Id : Unit_Id;
Arg_Cont_Id : Context_Id;
begin
Check_Validity (Right, Package_Name & "Is_Main_Unit_In_Tree");
Arg_Cont_Id := Encl_Cont_Id (Right);
Reset_Context (Arg_Cont_Id);
Arg_Unit_Id := Get_Unit_Id (Right);
if Arg_Kind in A_Procedure .. A_Protected_Body_Subunit then
return GNAT_Compilation_Dependencies (Arg_Unit_Id) /=
Nil_Unit_Id_List;
else
return False;
end if;
exception
when ASIS_Inappropriate_Compilation_Unit =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Is_Main_Unit_In_Tree");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Is_Main_Unit_In_Tree",
Ex => Ex,
Arg_CU => Right);
end Is_Main_Unit_In_Tree;
-----------------
-- Is_Obsolete --
-----------------
function Is_Obsolete (Right : Asis.Compilation_Unit) return Boolean is
Arg_Kind : constant Unit_Kinds := Kind (Right);
Arg_Id : Unit_Id;
Result : Boolean := True;
begin
Check_Validity (Right, Package_Name & "Is_Obsolete");
case Arg_Kind is
when Not_A_Unit |
A_Nonexistent_Declaration |
A_Nonexistent_Body |
An_Unknown_Unit =>
null;
when others =>
Arg_Id := Get_Unit_Id (Right);
if Arg_Id = Standard_Id then
Result := False;
else
Result := not (Source_Status (Right) = Up_To_Date);
end if;
end case;
return Result;
exception
when ASIS_Inappropriate_Compilation_Unit =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Is_Obsolete");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Is_Obsolete",
Ex => Ex,
Arg_CU => Right);
end Is_Obsolete;
-----------------------------
-- Is_Overriding_Operation --
-----------------------------
function Is_Overriding_Operation
(Declaration : Asis.Element)
return Boolean
is
Result : Boolean := False;
Entity_N : Entity_Id := Empty;
begin
case Declaration_Kind (Declaration) is
when A_Procedure_Instantiation |
A_Function_Instantiation =>
Entity_N := Specification (Instance_Spec (Node (Declaration)));
Entity_N := Related_Instance (Defining_Unit_Name (Entity_N));
when A_Procedure_Declaration |
A_Function_Declaration |
A_Procedure_Body_Declaration |
A_Function_Body_Declaration |
A_Null_Procedure_Declaration |
A_Procedure_Renaming_Declaration |
A_Function_Renaming_Declaration =>
if not Is_Part_Of_Implicit (Declaration) then
Entity_N := Specification (Node (Declaration));
Entity_N := Defining_Unit_Name (Entity_N);
end if;
when An_Expression_Function_Declaration =>
Entity_N := Specification (R_Node (Declaration));
Entity_N := Defining_Unit_Name (Entity_N);
when others =>
null;
end case;
if Present (Entity_N)
and then
Nkind (Entity_N) in
N_Defining_Identifier | N_Defining_Operator_Symbol
then
Result := Present (Overridden_Operation (Entity_N));
end if;
return Result;
end Is_Overriding_Operation;
----------------------------
-- Is_Predefined_Operator --
----------------------------
function Is_Predefined_Operator
(Operator : Asis.Element)
return Boolean
is
Result : Boolean := False;
Entity_N : Entity_Id;
begin
if Expression_Kind (Operator) = An_Operator_Symbol then
Entity_N := Entity (Node (Operator));
Result := Present (Entity_N) and then Is_Predefined (Entity_N);
end if;
return Result;
end Is_Predefined_Operator;
----------------
-- Is_Private --
----------------
function Is_Private (Declaration : Asis.Element) return Boolean is
Arg_Element : Element := Declaration;
Result : Boolean := False;
Next_Node : Node_Id;
Enclosing_List : List_Id;
Enclosing_Node : Node_Id;
begin
Check_Validity (Declaration, Package_Name & "Is_Private");
if Declaration_Kind (Declaration) = Not_A_Declaration or else
Declaration_Kind (Declaration) in
A_Loop_Parameter_Specification .. An_Element_Iterator_Specification
then
return False;
end if;
-- In case of an implicit Element we go to the "enclosing" explicit
-- Element to get the node stored in R_Node field which can safely be
-- used for tree traversal (for implicit Elements R_Node may be of
-- special use and it may have the Parent field set to Empty
while Is_Part_Of_Implicit (Arg_Element)
and then
Special_Case (Arg_Element) /= From_Limited_View
loop
Arg_Element := Enclosing_Element (Arg_Element);
end loop;
if Special_Case (Arg_Element) = Explicit_From_Standard then
-- No sense to do any tree traversing, and the case of Standard is
-- special - we do not have a compilation unit node for it
return False;
end if;
Next_Node := R_Node (Arg_Element);
while Nkind (Next_Node) /= N_Compilation_Unit and then
not Is_List_Member (Next_Node)
loop
Next_Node := Parent (Next_Node);
end loop;
while Nkind (Next_Node) /= N_Compilation_Unit loop
-- If we are here, we have Next_Node being a list member
Enclosing_List := List_Containing (Next_Node);
Enclosing_Node := Parent (Enclosing_List);
case Nkind (Enclosing_Node) is
when N_Statement_Other_Than_Procedure_Call =>
-- We can not be in any private part
exit;
when N_Package_Specification |
N_Task_Definition |
N_Protected_Definition =>
if Enclosing_List = Private_Declarations (Enclosing_Node) then
Result := True;
exit;
end if;
when others =>
null;
end case;
Next_Node := Parent (Next_Node);
while Nkind (Next_Node) /= N_Compilation_Unit and then
not Is_List_Member (Next_Node)
loop
Next_Node := Parent (Next_Node);
end loop;
end loop;
return Result;
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 & "Is_Private");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Is_Private",
Ex => Ex,
Arg_Element => Declaration);
end Is_Private;
------------------
-- Is_Procedure --
------------------
function Is_Procedure (Decl : Asis.Element) return Boolean is
Result : Boolean := False;
begin
case Declaration_Kind (Decl) is
when A_Procedure_Declaration |
A_Procedure_Instantiation |
A_Procedure_Body_Declaration |
A_Null_Procedure_Declaration |
A_Procedure_Renaming_Declaration =>
Result := True;
when others =>
null;
end case;
return Result;
end Is_Procedure;
-----------------
-- Is_RCI_Unit --
-----------------
function Is_RCI_Unit (C : Asis.Compilation_Unit) return Boolean is
Arg_Node : Node_Id;
Result : Boolean := False;
begin
if Is_Standard (C) then
return False;
end if;
case Unit_Kind (C) is
when A_Package |
A_Procedure_Body |
A_Function_Body |
A_Generic_Package =>
Arg_Node := Unit (Top (C));
Arg_Node := Defining_Unit_Name (Specification (Arg_Node));
if Nkind (Arg_Node) = N_Defining_Program_Unit_Name then
Arg_Node := Defining_Identifier (Arg_Node);
end if;
Result := Is_Remote_Call_Interface (Arg_Node);
when others => null;
end case;
return Result;
end Is_RCI_Unit;
-------------------------
-- Is_Renaming_As_Body --
-------------------------
function Is_Renaming_As_Body (Declaration : Asis.Element) return Boolean is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Declaration);
Arg_Node : Node_Id;
Result : Boolean := False;
begin
Check_Validity (Declaration, Package_Name & "Is_Renaming_As_Body");
if Arg_Kind = A_Procedure_Renaming_Declaration or else
Arg_Kind = A_Function_Renaming_Declaration
then
Arg_Node := R_Node (Declaration);
if Nkind (Arg_Node) /= N_Subprogram_Declaration then
Result := Present (Corresponding_Spec (Arg_Node));
end if;
end if;
return Result;
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 & "Is_Renaming_As_Body");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Is_Renaming_As_Body",
Ex => Ex,
Arg_Element => Declaration);
end Is_Renaming_As_Body;
---------------
-- Is_Static --
---------------
function Is_Static (Element : Asis.Element) return Boolean is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Element);
Arg_Node : Node_Id;
Result : Boolean := False;
begin
Check_Validity (Element, Package_Name & "Is_Static");
if Arg_Kind in Internal_Expression_Kinds and then
Is_True_Expression (Element)
then
Result := Sinfo.Is_Static_Expression (R_Node (Element));
elsif Arg_Kind = A_Range_Attribute_Reference or else
Arg_Kind =
A_Discrete_Range_Attribute_Reference_As_Subtype_Definition
or else
Arg_Kind = A_Discrete_Range_Attribute_Reference
then
Arg_Node := R_Node (Element);
if Nkind (Arg_Node) = N_Range_Constraint then
Arg_Node := Range_Expression (Arg_Node);
end if;
if Nkind (Arg_Node) = N_Range and then
Is_Static_Expression (Low_Bound (Arg_Node)) and then
Is_Static_Expression (High_Bound (Arg_Node))
then
Result := True;
end if;
end if;
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 & "Is_Static");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Is_Static",
Ex => Ex,
Arg_Element => Element);
end Is_Static;
-----------------------
-- Is_Tagged_Type_Eq --
-----------------------
function Is_Tagged_Type_Eq
(Declaration : Asis.Element)
return Boolean
is
Entity : Entity_Id;
Result : Boolean := False;
begin
if Is_Bool_Eq_Declaration (Declaration)
or else
Is_Implicit_Neq_Declaration (Declaration)
then
Entity := Node (Declaration);
Entity := Defining_Unit_Name (Specification (Entity));
Result := Is_Dispatching_Operation (Entity);
end if;
return Result;
end Is_Tagged_Type_Eq;
------------------------
-- Is_True_Expression --
------------------------
function Is_True_Expression
(Expression : Asis.Expression)
return Boolean
is
Arg_Node : Node_Id;
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Expression);
Expr_Chars : Name_Id;
Entity_Node : Entity_Id;
Result : Boolean := True;
-- the idea of the implementation is to find out the cases when
-- Expression is NOT a true exception, so we initialize Result
-- as True
begin
Check_Validity (Expression, Package_Name & "Is_True_Expression");
if Is_From_SPARK_Aspect (Expression)
and then
Arg_Kind = A_Positional_Array_Aggregate
and then
Etype (Node (Expression)) = Any_Composite
then
return False;
end if;
-- A special case of an aggregate that is a component of 'Update
-- attribute
if Arg_Kind in A_Record_Aggregate | A_Named_Array_Aggregate then
Arg_Node := Node (Expression);
Arg_Node := Parent (Arg_Node);
if Nkind (Arg_Node) = N_Attribute_Reference
and then
Attribute_Name (Arg_Node) = Name_Update
then
return False;
end if;
end if;
Arg_Node := Node (Expression);
if Arg_Kind = A_Selected_Component
and then
Nkind (Arg_Node) = N_Function_Call
and then
Nkind (R_Node (Expression)) = N_Expanded_Name
then
-- In some cases (in particular when this expanded name is a
-- parameter of an infix call to predefined "=") a reference to an
-- overloaded enumeration literal in the form of an expanded name is
-- transformed into a function call, and the right structure can be
-- found in the rewritten node only.
Arg_Node := R_Node (Expression);
end if;
if Arg_Kind not in Internal_Expression_Kinds then
return False;
end if;
if Nkind (Arg_Node) = N_Identifier and then
Nkind (Parent (Arg_Node)) = N_Expanded_Name and then
Arg_Node = Selector_Name (Parent (Arg_Node))
then
-- selector in an expanded name - all the semantic fields
-- are set for the whole name, but not for this selector.
-- So:
Arg_Node := Parent (Arg_Node);
end if;
if Nkind (Arg_Node) not in N_Has_Etype or else
No (Etype (Arg_Node)) or else
Is_Anonymous (Ekind (Etype (Arg_Node))) or else
Ekind (Etype (Arg_Node)) = E_Subprogram_Type or else
Ekind (Etype (Arg_Node)) = E_Void
then
-- Expression may be a true expression, but it may have a type which
-- cannot be represented in ASIS (such as an anonymous access type),
-- in such cases we also classify it as being not true expression
Result := False;
else
-- in some cases more detailed analysis is required.
-- ??? This part may require some more analysis - it may be
-- somewhat redundant
case Arg_Kind is
when An_Identifier | A_Selected_Component =>
-- and here we have to investigate whether or not this
-- Expression is a "naming expression"
if Special_Case (Expression) = Rewritten_Named_Number then
return True;
end if;
-- ??? <tree problem 1>
-- this fragment should be revised when the problem is fixed (as it should)
if Nkind (Arg_Node) = N_Selected_Component and then
Etype (Arg_Node) = Any_Type
-- for now (GNAT 3.05) this means, that Expression is an
-- expanded name of the character literal of ether a
-- predefined character type or of the type derived from a
-- predefined character type; the problem is that the
-- Entity field is not set for such a node
then
return True;
end if;
-- ??? <tree problem 1> - end
-- now taking the Entity field (if any) and looking,
-- what we have:
if Nkind (Arg_Node) = N_Selected_Component then
Entity_Node := Entity (Selector_Name (Arg_Node));
elsif Nkind (Arg_Node) = N_Attribute_Definition_Clause then
-- the attribute designator in an attribute definition
-- clause
Entity_Node := Empty;
else
Entity_Node := Entity (Arg_Node);
end if;
if No (Entity_Node) then
Result := False;
elsif Ekind (Entity_Node) = E_Enumeration_Literal then
null;
else
case Ekind (Entity_Node) is
-- the first choice in this case statement should
-- filter in entities which *ARE* expressions in Ada
-- sense
when E_Variable =>
-- tasks and protected objects declared by _single_
-- task/protected declarations do not have
-- corresponding type declarations which can be
-- represented in ASIS
Result := Comes_From_Source (Parent (Entity_Node));
when E_Component |
E_Constant |
E_Discriminant |
E_Loop_Parameter |
E_In_Out_Parameter |
E_In_Parameter |
E_Out_Parameter |
E_Generic_In_Out_Parameter |
E_Generic_In_Parameter |
E_Named_Integer |
E_Named_Real |
E_Enumeration_Literal |
-- ??? (see elsif path)
-- enumeration literals are not treated as
-- functions in ASIS
E_Entry_Index_Parameter |
E_Protected_Object =>
null;
-- simply keeping the initialization of Result
when others =>
Result := False;
end case;
end if;
when Internal_Operator_Symbol_Kinds =>
Result := False;
when Internal_Attribute_Reference_Kinds =>
case Internal_Attribute_Reference_Kinds (Arg_Kind) is
when An_Adjacent_Attribute |
A_Base_Attribute |
A_Ceiling_Attribute |
A_Class_Attribute |
A_Compose_Attribute |
A_Copy_Sign_Attribute |
An_Exponent_Attribute |
A_Floor_Attribute |
A_Fraction_Attribute |
An_Image_Attribute |
An_Input_Attribute |
A_Leading_Part_Attribute |
A_Machine_Attribute |
A_Max_Attribute |
A_Min_Attribute |
A_Model_Attribute |
An_Output_Attribute |
A_Pos_Attribute |
A_Pred_Attribute |
A_Range_Attribute |
A_Read_Attribute |
A_Remainder_Attribute |
A_Round_Attribute |
A_Rounding_Attribute |
A_Scaling_Attribute |
A_Succ_Attribute |
A_Truncation_Attribute |
An_Unbiased_Rounding_Attribute |
A_Val_Attribute |
A_Value_Attribute |
A_Wide_Image_Attribute |
A_Wide_Value_Attribute |
A_Write_Attribute =>
Result := False;
when An_Implementation_Defined_Attribute =>
Expr_Chars := Attribute_Name (Arg_Node);
if Expr_Chars = Name_Abort_Signal or else
Expr_Chars = Name_Elab_Body or else
Expr_Chars = Name_Elab_Spec
then
Result := False;
end if;
when others =>
null;
end case;
when A_Positional_Array_Aggregate | A_Named_Array_Aggregate =>
if Nkind (Parent (Arg_Node)) =
N_Enumeration_Representation_Clause
or else
Is_Typeless_Subaggregate (Arg_Node)
then
Result := False;
end if;
when others =>
null;
end case;
end if;
return Result;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Expression,
Outer_Call => Package_Name & "Is_True_Expression");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Is_True_Expression",
Ex => Ex,
Arg_Element => Expression);
end Is_True_Expression;
----------------------
-- Is_Type_Operator --
----------------------
function Is_Type_Operator
(Op_Decl : Asis.Element;
Type_Decl : Asis.Element)
return Boolean
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Op_Decl);
Result : Boolean := False;
Next_Type : Asis.Element;
Arg : Asis.Element := Op_Decl;
begin
if (Arg_Kind = A_Function_Declaration
or else
((Arg_Kind = A_Function_Body_Declaration
or else
Arg_Kind = A_Function_Body_Stub
or else
Arg_Kind = A_Function_Renaming_Declaration)
and then
not (Is_Equal (Corresponding_Declaration (Op_Decl), Op_Decl)))
or else
Arg_Kind = A_Function_Instantiation
or else
Arg_Kind = A_Formal_Function_Declaration)
and then
Int_Kind (Names (Op_Decl) (1)) in Internal_Defining_Operator_Kinds
then
if Arg_Kind = A_Function_Instantiation then
Arg := Corresponding_Declaration (Arg);
end if;
-- First, check the result type
Next_Type := Result_Profile (Arg);
if Int_Kind (Next_Type) = A_Selected_Component then
Next_Type := Selector (Next_Type);
end if;
if Int_Kind (Next_Type) = An_Identifier then
Next_Type := Corresponding_Name_Declaration (Next_Type);
Next_Type := Corresponding_First_Subtype (Next_Type);
if Is_Equal (Next_Type, Type_Decl) then
Result := True;
end if;
end if;
if not Result then
-- check parameter types
declare
Params : constant Asis.Element_List :=
Parameter_Profile (Arg);
begin
for J in Params'Range loop
Next_Type := Object_Declaration_View (Params (J));
if Int_Kind (Next_Type) = A_Selected_Component then
Next_Type := Selector (Next_Type);
end if;
if Int_Kind (Next_Type) = An_Identifier then
Next_Type := Corresponding_Name_Declaration (Next_Type);
Next_Type := Corresponding_First_Subtype (Next_Type);
if Is_Equal (Next_Type, Type_Decl) then
Result := True;
exit;
end if;
end if;
end loop;
end;
end if;
end if;
return Result;
end Is_Type_Operator;
------------------------------
-- Is_Typeless_Subaggregate --
------------------------------
function Is_Typeless_Subaggregate (Aggr : Node_Id) return Boolean is
Parent_Node : Node_Id := Parent (Aggr);
Result : Boolean := False;
Arg_Type : Entity_Id;
Parent_Type : Entity_Id;
begin
if Nkind (Parent_Node) = N_Component_Association then
Parent_Node := Parent (Parent_Node);
end if;
if Nkind (Parent_Node) = N_Aggregate then
Arg_Type := Etype (Aggr);
while Present (Arg_Type) and then Etype (Arg_Type) /= Arg_Type loop
Arg_Type := Etype (Arg_Type);
end loop;
Parent_Type := Etype (Parent_Node);
while Present (Parent_Type)
and then Etype (Parent_Type) /= Parent_Type
loop
Parent_Type := Etype (Parent_Type);
end loop;
Result := Arg_Type = Parent_Type;
end if;
return Result;
end Is_Typeless_Subaggregate;
-------------------------
-- Is_Uniquely_Defined --
-------------------------
function Is_Uniquely_Defined (Reference : Asis.Expression) return Boolean is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Reference);
Arg_Node : Node_Id;
Arg_R_Node : Node_Id;
Result : Boolean := False;
begin
Check_Validity (Reference, Package_Name & "Is_Uniquely_Defined");
if Is_Check_Name (Reference) then
return False;
end if;
if Special_Case (Reference) = End_Label then
return False;
end if;
if Arg_Kind = An_Identifier
and then
Nkind (Node (Reference)) = N_Defining_Identifier
and then
Normalization_Case (Reference) =
Is_Normalized_Defaulted_Null_Procedure
then
-- A special case of an actual parameter in a normalized generic
-- association when the defult for null procedure is used
return True;
end if;
if Arg_Kind = An_Identifier or else
Arg_Kind in Internal_Operator_Symbol_Kinds or else
Arg_Kind = A_Character_Literal or else
Arg_Kind = An_Enumeration_Literal
then
if Special_Case (Reference) = Rewritten_Named_Number then
-- argument does not have an Entity field at all!!
return True;
end if;
Result := True;
-- We suppose, that in general case we have a unique declaration,
-- and now let's try to detect if we have a special case:
-- Aspect marks and aspect-specific identifiers do not have a
-- declaration
if Is_Aspect_Mark (Reference) or else
Is_Aspect_Specific_Name (Reference)
then
Result := False;
end if;
-- A part of SPARK-specific aspect
if Is_From_SPARK_Aspect (Reference) then
Arg_R_Node := R_Node (Reference);
if Nkind (Parent (Arg_R_Node)) = N_Expanded_Name
and then
Arg_R_Node = Selector_Name (Parent (Arg_R_Node))
then
Arg_R_Node := Parent (Arg_R_Node);
Arg_Node := Arg_R_Node;
else
Arg_Node := Node (Reference);
end if;
if not ((Nkind (Arg_Node) in N_Has_Entity
and then
Present (Entity (Arg_Node)))
or else
(Nkind (Arg_R_Node) in N_Has_Entity
and then
Present (Entity (Arg_R_Node))))
then
return False;
end if;
if Nkind (Arg_Node) in N_Has_Entity then
Arg_Node := Entity (Arg_Node);
if Present (Arg_Node)
and then
Nkind (Arg_Node) in N_Entity -- check is needed for SPARK!
and then
Ekind (Arg_Node) = E_Abstract_State
then
return False;
end if;
end if;
-- A special case of notation like '... => + null'
if Nkind (Node (Reference)) in N_Op
and then
Nkind (R_Node (Reference)) = N_Identifier
then
return False;
end if;
end if;
Arg_Node := Node (Reference);
-- first, the situation when "passed a portion of a pragma that
-- was "ignored" by the compiler", it relates to pragma arguments
-- only, but not to pragma element identifiers:
-- GNAT rewrites the tree structure for non-recognized pragma as
-- if it is a null statement, so:
if Result and then
Nkind (Parent (Parent (Arg_Node))) = N_Null_Statement
then
Result := False;
end if;
if Result and then Arg_Kind = An_Identifier then
-- There are three checks specific to arguments of An_Identifier
-- kind only: a pragma_argument_identifier, an identifier specific
-- to a pragma and a reference to an attribute_designator:
if Nkind (Arg_Node) = N_Pragma_Argument_Association
-- a reference to a pragma_argument_identifier
or else
(Nkind (Arg_Node) in N_Has_Entity
and then
No (Entity (Arg_Node))
and then
(Nkind (Parent (Arg_Node)) = N_Pragma_Argument_Association
or else
Is_From_Import_Procedure_Pragma (Arg_Node)))
-- an identifier specific to a pragma, we make a guess that
-- any identifier on the place of a pragma argument is
-- specific to the pragma, if the Entity field is not set
-- for this identifier. Is it really true???
or else
Nkind (Arg_Node) = N_Attribute_Reference
or else
Special_Case (Reference) = Dummy_Class_Attribute_Designator
-- a reference to an attribute_designator
or else
Nkind (Arg_Node) = N_Attribute_Definition_Clause
-- attribute designator from an attribute definition clause
then
Result := False;
end if;
end if;
-- One more check for pragma argument. It corresponds to the
-- situation when the identifier is specific for a pragma, but in
-- the same time it is a part of other expression. This check is
-- specific to extended Import and Export pragmas applying to
-- subprograms.
if Result and then
Special_Case (Reference) = Not_A_Special_Case and then
Arg_Kind = An_Identifier and then
No (Entity (Arg_Node))
then
-- The first possibility:
--
-- pragma Import_Function (Internal => Unix_Code_Mappings,
-- External => "unix_code_mappings",
-- Result_Type => Integer,
-- Mechanism => (Value));
--
-- Value is rewritten into N_Aggregate
--
-- The second possibility:
--
-- pragma Import_Procedure (Internal => Ignore_Signal,
-- External => "ignore_signal",
-- Mechanism => (Value, Value));
--
-- Value is not rewritten and it is represented as a "normal"
-- aggregate component
--
-- And the third possibility:
--
-- pragma Export_Procedure
-- (Internal => Reset,
-- External => "",
-- Parameter_Types => (File_Type, File_Mode),
-- Mechanism => (File => Reference));
--
-- Here we have an aggregate with named associations:
if (Nkind (R_Node (Reference)) = N_Aggregate and then
(Nkind (Parent (R_Node (Reference)))) =
N_Pragma_Argument_Association)
or else
(Nkind (R_Node (Reference)) = N_Identifier
and then
not (Is_Rewrite_Substitution (R_Node (Reference)))
and then
((Nkind (Parent (R_Node (Reference))) = N_Aggregate
and then
Nkind (Parent (Parent (R_Node (Reference)))) =
N_Pragma_Argument_Association)
or else
(Nkind (Parent (R_Node (Reference))) =
N_Component_Association
and then
Nkind (Parent (Parent (R_Node (Reference)))) =
N_Aggregate
and then
Nkind (Parent (Parent (Parent ((R_Node (Reference)))))) =
N_Pragma_Argument_Association)
)
)
then
Result := False;
end if;
end if;
-- Then check for the situation when if passed a portion of a pragma
-- that may be an ambiguous reference to more than one entity.
if Result and then
Nkind (Parent (Arg_Node)) = N_Pragma_Argument_Association and then
Needs_List (Reference)
then
declare
Res_List : constant Asis.Element_List :=
Corresponding_Name_Definition_List (Reference);
begin
if Res_List'Length /= 1 then
Result := False;
end if;
end;
end if;
end if;
-- Case when the argument is a parameter of Source_File_Name pragma or
-- component thereof
if Result then
while not Is_List_Member (Arg_Node) and then
Present (Arg_Node)
loop
Arg_Node := Parent (Arg_Node);
end loop;
if Nkind (Arg_Node) = N_Pragma_Argument_Association
and then
Pragma_Name (Parent (Arg_Node)) in
Name_Source_File_Name | Name_Source_File_Name_Project
then
Result := False;
end if;
end if;
-- Case when the argument is the (component of the) prefix of the
-- GNAT-specific attribute 'Elab_Body or 'Elab_Spec
if Result then
Arg_Node := Parent (R_Node (Reference));
while Nkind (Arg_Node) = N_Selected_Component loop
Arg_Node := Parent (Arg_Node);
end loop;
if Nkind (Arg_Node) = N_Attribute_Reference
and then
Attribute_Name (Arg_Node) in Name_Elab_Body .. Name_Elab_Spec
then
Result := False;
end if;
end if;
return Result;
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Reference,
Outer_Call => Package_Name & "Is_Uniquely_Defined");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Is_Uniquely_Defined",
Ex => Ex,
Arg_Element => Reference);
end Is_Uniquely_Defined;
-------------------------------
-- Main_Unit_In_Current_Tree --
-------------------------------
function Main_Unit_In_Current_Tree
(The_Context : Asis.Context)
return Asis.Compilation_Unit
is
Curr_Tree_Id : Tree_Id;
Curr_Cont_Id : Context_Id;
Res_Unit_Id : Unit_Id := Nil_Unit;
begin
Check_Validity (The_Context, Package_Name & "Main_Unit_In_Current_Tree");
Curr_Cont_Id := Get_Current_Cont;
Curr_Tree_Id := Get_Current_Tree;
if Tree_Processing_Mode (Get_Cont_Id (The_Context)) = GNSA then
-- Note, that for GNSA Context no check is made! This works correctly
-- only for -GNSA -C1 Context and if only this Context Is_Open
-- at the moment
Res_Unit_Id := Standard_Id + 1; -- ???
-- Not a good approach!!!
elsif Get_Cont_Id (The_Context) = Curr_Cont_Id and then
Curr_Cont_Id /= Nil_Context_Id and then
Present (Curr_Tree_Id)
then
Res_Unit_Id := Main_Unit_Id;
elsif Get_Cont_Id (The_Context) /= Nil_Context_Id then
Reset_Context (Get_Cont_Id (The_Context));
if Tree_Processing_Mode (Get_Cont_Id (The_Context)) = GNSA then
-- Note, that for GNSA Context no check is made! This works
-- correctly only for -GNSA -C1 Context and if only this Context
-- Is_Open at the moment
Res_Unit_Id := Standard_Id + 1; -- ???
-- Not a good approach!!!
elsif Last_Tree (Get_Cont_Id (The_Context)) >= First_Tree_Id then
Res_Unit_Id := Main_Unit_Id (First_Tree_Id);
end if;
end if;
if Present (Res_Unit_Id) then
return Get_Comp_Unit (Res_Unit_Id, Get_Cont_Id (The_Context));
else
return Nil_Compilation_Unit;
end if;
exception
when ASIS_Inappropriate_Context =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Main_Unit_In_Current_Tree");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Main_Unit_In_Current_Tree",
Ex => Ex);
end Main_Unit_In_Current_Tree;
-------------------
-- Needed_Checks --
-------------------
function Needed_Checks
(Element : Asis.Element)
return Run_Time_Check_Set
is
Result : Run_Time_Check_Set := Empty_Check_Set;
Arg_Node : constant Node_Id := R_Node (Element);
Tmp : Asis.Element;
begin
Check_Validity (Element, Package_Name & "Needed_Checks");
if Is_Nil (Element)
or else
-- general exceptions should go here
Int_Kind (Element) in A_Parenthesized_Expression
then
return Result;
end if;
-- Infix call to a predefined operator: we do not want to report checks
-- twice - for the call and for the operator:
if Expression_Kind (Element) = An_Operator_Symbol then
Tmp := Enclosing_Element (Element);
if Expression_Kind (Tmp) = A_Function_Call
and then
not Is_Prefix_Call (Tmp)
and then
Is_Predefined_Operator (Element)
then
return Result;
end if;
end if;
-- Do_Accessibility_Check
if Nkind (Arg_Node) = N_Parameter_Specification
and then
Do_Accessibility_Check (Arg_Node)
then
Result (Do_Accessibility_Check) := True;
end if;
-- Do_Discriminant_Check
if Nkind (Arg_Node) = N_Selected_Component
and then
Do_Discriminant_Check (Arg_Node)
then
Result (Do_Discriminant_Check) := True;
end if;
-- Do_Division_Check
if Nkind (Arg_Node) in N_Op_Divide | N_Op_Mod | N_Op_Rem
and then
Do_Division_Check (Arg_Node)
then
Result (Do_Division_Check) := True;
end if;
-- Do_Length_Check
if Nkind (Arg_Node) in
N_Assignment_Statement | N_Op_And | N_Op_Or | N_Op_Xor |
N_Type_Conversion
and then
Do_Length_Check (Arg_Node)
then
Result (Do_Length_Check) := True;
end if;
-- Do_Overflow_Check
if Nkind (Arg_Node) in
N_Op | N_Attribute_Reference | N_Case_Expression |
N_If_Expression | N_Type_Conversion
and then
Do_Overflow_Check (Arg_Node)
then
Result (Do_Overflow_Check) := True;
end if;
-- Do_Range_Check
if Nkind (Arg_Node) in N_Subexpr
and then
Do_Range_Check (Arg_Node)
then
Result (Do_Range_Check) := True;
end if;
-- Do_Storage_Check
if Nkind (Arg_Node) in N_Allocator | N_Subprogram_Body
and then
Do_Storage_Check (Arg_Node)
then
Result (Do_Storage_Check) := True;
end if;
-- Do_Tag_Check
if Nkind (Arg_Node) in
N_Assignment_Statement | N_Extended_Return_Statement |
N_Function_Call | N_Procedure_Call_Statement |
N_Simple_Return_Statement | N_Type_Conversion
and then
Do_Tag_Check (Arg_Node)
then
Result (Do_Tag_Check) := True;
end if;
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 & "Needed_Checks");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Needed_Checks",
Ex => Ex,
Arg_Element => Element);
end Needed_Checks;
-----------
-- No_Op --
-----------
procedure No_Op
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out No_State)
is
begin
pragma Unreferenced (Element);
pragma Unreferenced (Control);
pragma Unreferenced (State);
null;
end No_Op;
-------------------------
-- Normalize_Reference --
-------------------------
function Normalize_Reference (Ref : Asis.Element) return Asis.Element is
Result : Asis.Element := Ref;
begin
case Expression_Kind (Ref) is
when A_Selected_Component =>
Result := Selector (Ref);
when An_Attribute_Reference =>
Result := Normalize_Reference (Prefix (Ref));
when others =>
null;
end case;
return Result;
end Normalize_Reference;
--------------------------
-- Original_Line_Number --
--------------------------
function Original_Line_Number
(Element : Asis.Element;
Compiled_Line : Line_Number_Positive)
return Line_Number
is
SFI : Source_File_Index;
Result : Line_Number := 0;
begin
Check_Validity (Element, Package_Name & "Original_Line_Number");
if Is_Text_Available (Element) then
if Compiled_Line > Line_Number (Number_Of_Lines (Element)) then
Raise_ASIS_Inappropriate_Line_Number
(Package_Name & "Original_Line_Number");
end if;
SFI := Get_Source_File_Index (Location (Element));
Result :=
Line_Number (Sinput.Physical_To_Logical
(Physical_Line_Number (Compiled_Line), SFI));
end if;
return Result;
exception
when ASIS_Inappropriate_Element | ASIS_Inappropriate_Line_Number =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Element,
Outer_Call => Package_Name & "Original_Line_Number");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Original_Line_Number",
Ex => Ex,
Arg_Element => Element);
end Original_Line_Number;
------------------------
-- Original_Text_Name --
------------------------
function Original_Text_Name
(Compilation_Unit : Asis.Compilation_Unit)
return Wide_String
is
begin
Check_Validity (Compilation_Unit, Package_Name & "Original_Text_Name");
if not Exists (Compilation_Unit) then
return Nil_Asis_Wide_String;
else
-- Exists resets the Context!
return To_Program_Text (Ref_File (Compilation_Unit));
end if;
exception
when ASIS_Inappropriate_Compilation_Unit =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Original_Text_Name");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Original_Text_Name",
Ex => Ex,
Arg_CU => Compilation_Unit);
end Original_Text_Name;
-----------------------------
-- Overrides_Type_Operator --
-----------------------------
function Overrides_Type_Operator
(Op_Decl : Asis.Element;
Type_Decl : Asis.Element)
return Boolean
is
pragma Unreferenced (Type_Decl);
Op_Entity : Entity_Id;
Result : Boolean := False;
begin
-- We assume that Is_Type_Operator (Op_Decl, Type_Decl) is True
-- !!! The implementation is incomplete!!!
Op_Entity := Node (Names (Op_Decl) (1));
if Present (Overridden_Operation (Op_Entity)) then
Result := True;
end if;
return Result;
end Overrides_Type_Operator;
-------------------
-- Pragmas_After --
-------------------
function Pragmas_After
(Compilation_Unit : Asis.Compilation_Unit;
Include_Pragmas : Boolean := True)
return Asis.Pragma_Element_List is
pragma Assert (Include_Pragmas);
-- This flag is only present so the profile matches what A4g.Queries
-- expects.
Program_Unit : constant Asis.Element :=
Unit_Declaration (Compilation_Unit);
Unit_Span : constant Asis.Text.Span := Element_Span (Program_Unit);
Comp_Pragmas : constant Asis.Element_List :=
Asis.Elements.Compilation_Pragmas (Compilation_Unit);
First : Asis.List_Index := Comp_Pragmas'First;
function Span_Before (X, Y : Asis.Text.Span) return Boolean is
(X.Last_Line < Y.First_Line or else
(X.Last_Line = Y.First_Line and then
X.Last_Column < Y.First_Column));
-- True if X is before Y in the source code
begin
-- Find the first pragma that occurs after the program unit, as
-- indicated by its Span. Skip configuration file pragmas, which must
-- come first. It makes no sense to compare against the Span of a
-- configuration file pragma, because they come from a different source
-- file.
while First <= Comp_Pragmas'Last and then
(Comp_Pragmas (First).Special_Case = Configuration_File_Pragma or else
not Span_Before (Unit_Span, Element_Span (Comp_Pragmas (First))))
loop
First := First + 1;
end loop;
declare
Result : Asis.Pragma_Element_List renames
Comp_Pragmas (First .. Comp_Pragmas'Last);
subtype Slide is Asis.Pragma_Element_List (1 .. Result'Length);
begin
for J in Result'Range loop
pragma Assert
(Result (J).Special_Case /= Configuration_File_Pragma);
end loop;
return Slide (Result); -- Make sure the result is 1-based
end;
end Pragmas_After;
---------------------
-- Primitive_Owner --
---------------------
function Primitive_Owner
(Declaration : Asis.Declaration)
return Asis.Type_Definition
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Declaration);
Arg_Node : Node_Id := Empty;
Par_Node : Node_Id := Empty;
Res_Node : Node_Id := Empty;
Result : Element := Nil_Element;
Res_Kind : Internal_Element_Kinds := Not_An_Element;
begin
Check_Validity (Declaration, Package_Name & "Primitive_Owner");
if not (Arg_Kind = A_Procedure_Declaration or else
Arg_Kind = A_Null_Procedure_Declaration or else
Arg_Kind = A_Function_Declaration or else
Arg_Kind = An_Expression_Function_Declaration or else
Arg_Kind = A_Procedure_Renaming_Declaration or else
Arg_Kind = A_Function_Renaming_Declaration or else
Arg_Kind = A_Procedure_Body_Declaration or else
Arg_Kind = A_Function_Body_Declaration or else
Arg_Kind = A_Procedure_Body_Stub or else
Arg_Kind = A_Function_Body_Stub)
then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Primitive_Owner",
Wrong_Kind => Arg_Kind);
end if;
if not Is_From_Implicit (Declaration) and then
Asis.Declarations.Is_Dispatching_Operation (Declaration)
then
Arg_Node := Specification (Node (Declaration));
if Nkind (Arg_Node) = N_Function_Specification then
if Has_Controlling_Result (Defining_Unit_Name (Arg_Node)) then
Res_Node := Defining_Unit_Name (Arg_Node);
Res_Node := Parent (Res_Node);
Res_Node := Sinfo.Result_Definition (Res_Node);
if Nkind (Res_Node) = N_Access_Definition then
Res_Node := Sinfo.Subtype_Mark (Res_Node);
end if;
Res_Node := Entity (Res_Node);
end if;
end if;
if No (Res_Node) then
-- This means that we do not have a function with controlling
-- result, so we have to go through the formal parameter list,
-- and it can not be No_List or empty
Par_Node := First (Parameter_Specifications (Arg_Node));
while Present (Par_Node) loop
if Is_Controlling_Formal
(Defining_Identifier (Par_Node))
then
if Nkind (Parameter_Type (Par_Node)) =
N_Access_Definition
then
Res_Node :=
Sinfo.Subtype_Mark (Parameter_Type (Par_Node));
else
Res_Node := Defining_Identifier (Par_Node);
end if;
Res_Node := Etype (Res_Node);
exit;
end if;
Par_Node := Next (Par_Node);
end loop;
end if;
pragma Assert (Present (Res_Node));
if Nkind (Original_Node (Parent (Res_Node))) =
N_Subtype_Declaration
then
Res_Node := Etype (Res_Node);
end if;
if Ekind (Res_Node) = E_Incomplete_Type
and then
Present (Full_View (Res_Node))
then
Res_Node := Full_View (Res_Node);
end if;
Res_Node := Original_Node (Parent (Res_Node));
case Nkind (Res_Node) is
when N_Private_Type_Declaration =>
if Tagged_Present (Res_Node) then
Res_Kind := A_Tagged_Private_Type_Definition;
else
-- It can be non-tagged, if the full view is tagged
Res_Kind := A_Private_Type_Definition;
end if;
when N_Private_Extension_Declaration =>
Res_Kind := A_Private_Extension_Definition;
when N_Full_Type_Declaration =>
Res_Node := Sinfo.Type_Definition (Res_Node);
when N_Task_Type_Declaration =>
Res_Node := Sinfo.Task_Definition (Res_Node);
when N_Protected_Type_Declaration =>
Res_Node := Sinfo.Protected_Definition (Res_Node);
when others =>
pragma Assert (False);
null;
end case;
Result := Node_To_Element_New (Node => Res_Node,
Internal_Kind => Res_Kind,
Starting_Element => Declaration);
end if;
return Result;
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 & "Primitive_Owner");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Primitive_Owner",
Ex => Ex,
Arg_Element => Declaration);
end Primitive_Owner;
------------------------
-- Source_File_Status --
------------------------
function Source_File_Status
(Right : Asis.Compilation_Unit)
return Source_File_Statuses
is
Arg_Kind : constant Unit_Kinds := Kind (Right);
Result : Source_File_Statuses;
begin
Check_Validity (Right, Package_Name & "Source_File_Status");
case Arg_Kind is
when Not_A_Unit |
A_Nonexistent_Declaration |
A_Nonexistent_Body |
An_Unknown_Unit =>
Result := Absent;
when others =>
Result := Source_Status (Right);
end case;
return Result;
exception
when ASIS_Inappropriate_Compilation_Unit =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Outer_Call => Package_Name & "Source_File_Status");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Source_File_Status",
Ex => Ex,
Arg_CU => Right);
end Source_File_Status;
-----------------------------------
-- Static_Expression_Value_Image --
-----------------------------------
function Static_Expression_Value_Image
(Expression : Asis.Expression)
return Wide_String
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Expression);
Arg_Node : Node_Id := Empty;
Result : Uint;
Tmp_El : Asis.Element;
begin
Check_Validity
(Expression, Package_Name & "Static_Expression_Value_Image");
if Arg_Kind not in Internal_Expression_Kinds then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Static_Expression_Value_Image",
Wrong_Kind => Arg_Kind);
end if;
if not (Is_True_Expression (Expression) and then
Is_Static (Expression))
then
return "";
end if;
Arg_Node := R_Node (Expression);
if Nkind (Arg_Node) = N_String_Literal then
String_To_Name_Buffer (Strval (Arg_Node));
return To_Wide_String (Name_Buffer (1 .. Name_Len));
-- elsif Nkind (Arg_Node) = N_Real_Literal then
-- begin
-- return Long_Long_Float'Wide_Image
-- (Get_LF_From_Ureal (Realval (Arg_Node)));
-- exception
-- when others => return "";
-- end;
elsif Has_Enumeration_Type (Expression) or else
Has_Integer_Type (Expression)
then
Result := Eval_Scalar_Node (Arg_Node);
UI_Image (Result, Format => Decimal);
return To_Wide_String (UI_Image_Buffer (1 .. UI_Image_Length));
else
if Expression_Kind (Expression) = A_Selected_Component then
Tmp_El := Selector (Expression);
else
Tmp_El := Expression;
end if;
if Expression_Kind (Tmp_El) = An_Identifier then
begin
Tmp_El := Corresponding_Name_Declaration (Tmp_El);
exception
when ASIS_Inappropriate_Element =>
Tmp_El := Nil_Element;
end;
if Declaration_Kind (Tmp_El) = A_Constant_Declaration then
Tmp_El := Initialization_Expression (Tmp_El);
return Static_Expression_Value_Image (Tmp_El);
end if;
end if;
end if;
return "";
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Expression,
Outer_Call => Package_Name & "Static_Expression_Value_Image");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name & "Static_Expression_Value_Image",
Ex => Ex,
Arg_Element => Expression);
end Static_Expression_Value_Image;
-----------------------------------------
-- Static_Range_High_Bound_Value_Image --
-----------------------------------------
function Static_Range_High_Bound_Value_Image
(Range_Element : Asis.Range_Constraint)
return Wide_String
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Range_Element);
Arg_Node : Node_Id := Empty;
Arg_Ekind : Entity_Kind;
Result : Uint;
begin
Check_Validity
(Range_Element, Package_Name & "Static_Range_High_Bound_Value_Image");
if not (Arg_Kind = A_Range_Attribute_Reference or else
Arg_Kind =
A_Discrete_Range_Attribute_Reference_As_Subtype_Definition
or else
Arg_Kind = A_Discrete_Range_Attribute_Reference)
then
Raise_ASIS_Inappropriate_Element
(Package_Name & "Static_Range_High_Bound_Value_Image",
Wrong_Kind => Arg_Kind);
end if;
if not (Is_Static (Range_Element)) then
return "";
end if;
Arg_Node := R_Node (Range_Element);
if Nkind (Arg_Node) = N_Range_Constraint then
Arg_Node := Range_Expression (Arg_Node);
end if;
Arg_Ekind := Ekind (Etype (Arg_Node));
if not (Arg_Ekind in Discrete_Kind) then
-- Implementation limitation!!!
return "";
end if;
Result := Eval_Scalar_Node (High_Bound (Arg_Node));
UI_Image (Result, Format => Decimal);
return To_Wide_String (UI_Image_Buffer (1 .. UI_Image_Length));
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Range_Element,
Outer_Call => Package_Name &
"Static_Range_High_Bound_Value_Image");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name &
"Static_Range_High_Bound_Value_Image",
Ex => Ex,
Arg_Element => Range_Element);
end Static_Range_High_Bound_Value_Image;
----------------------------------------
-- Static_Range_Low_Bound_Value_Image --
----------------------------------------
function Static_Range_Low_Bound_Value_Image
(Range_Element : Asis.Range_Constraint)
return Wide_String
is
Arg_Kind : constant Internal_Element_Kinds := Int_Kind (Range_Element);
Arg_Node : Node_Id := Empty;
Arg_Ekind : Entity_Kind;
Result : Uint;
begin
Check_Validity
(Range_Element, Package_Name & "Static_Range_Low_Bound_Value_Image");
if not (Arg_Kind = A_Range_Attribute_Reference or else
Arg_Kind =
A_Discrete_Range_Attribute_Reference_As_Subtype_Definition
or else
Arg_Kind = A_Discrete_Range_Attribute_Reference)
then
Raise_ASIS_Inappropriate_Element
(Diagnosis => Package_Name & "Static_Range_Low_Bound_Value_Image",
Wrong_Kind => Arg_Kind);
end if;
if not (Is_Static (Range_Element)) then
return "";
end if;
Arg_Node := R_Node (Range_Element);
if Nkind (Arg_Node) = N_Range_Constraint then
Arg_Node := Range_Expression (Arg_Node);
end if;
Arg_Ekind := Ekind (Etype (Arg_Node));
if not (Arg_Ekind in Discrete_Kind) then
-- Implementation limitation!!!
return "";
end if;
Result := Eval_Scalar_Node (Low_Bound (Arg_Node));
UI_Image (Result, Format => Decimal);
return To_Wide_String (UI_Image_Buffer (1 .. UI_Image_Length));
exception
when ASIS_Inappropriate_Element =>
raise;
when ASIS_Failed =>
if Status_Indicator = Unhandled_Exception_Error then
Add_Call_Information
(Argument => Range_Element,
Outer_Call => Package_Name &
"Static_Range_Low_Bound_Value_Image");
end if;
raise;
when Ex : others =>
Report_ASIS_Bug
(Query_Name => Package_Name &
"Static_Range_Low_Bound_Value_Image",
Ex => Ex,
Arg_Element => Range_Element);
end Static_Range_Low_Bound_Value_Image;
--------------------
-- Switch_To_GNSA --
--------------------
procedure Switch_To_GNSA
(Path : in out String_Access;
Target : String := "")
is
Idx : constant Natural :=
Index (Path.all, Directory_Separator & "bin" & Directory_Separator);
Head : constant String := Path (Path'First .. Idx);
Tail : constant String := Path (Idx + 1 .. Path'Last);
Tail_Start : Positive := Tail'First;
Tail_End : constant Positive := Tail'Last;
begin
if Target /= "" then
pragma Assert (Tail_End - Tail_Start + 1 > Target'Length and then
Tail (Tail_Start .. Tail_Start + Target'Length - 1) =
Target);
Tail_Start := Tail_Start + Target'Length;
end if;
Free (Path);
Path := new String'(Head & "asis-gnsa" & Directory_Separator &
Tail (Tail_Start .. Tail_End));
end Switch_To_GNSA;
end Asis.Extensions;
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