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8sa1-gcc/gcc/ada/lib-xref.adb
Geert Bosch c1c22e7a70 ali.adb: Type reference does not reset current file. 
* ali.adb: Type reference does not reset current file.

	* ali.adb: Recognize and scan renaming reference

	* ali.ads: Add spec for storing renaming references.

	* lib-xref.ads: Add documentation for handling of renaming references

	* lib-xref.adb: Implement output of renaming reference.

	* checks.adb:
	(Determine_Range): Document local variables
	(Determine_Range): Make sure Hbound is initialized. It looks as though
	 there could be a real problem here with an uninitialized reference
	 to Hbound, but no actual example of failure has been found.

	* g-socket.ads:
	Fix comment of Shutdown_Socket and Close_Socket. These functions
	should not fail silently because if they are called twice, this
	probably means that there is a race condition in the user program.
	Anyway, this behaviour is consistent with the rest of this unit.
	When an error occurs, an exception is raised with the error message
	as exception message.

From-SVN: r48125
2001-12-17 22:00:59 +01:00

963 lines
33 KiB
Ada
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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- L I B . X R E F --
-- --
-- B o d y --
-- --
-- $Revision$
-- --
-- Copyright (C) 1998-2001, Free Software Foundation, Inc. --
-- --
-- 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 Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
with Atree; use Atree;
with Csets; use Csets;
with Debug; use Debug;
with Lib.Util; use Lib.Util;
with Namet; use Namet;
with Opt; use Opt;
with Sinfo; use Sinfo;
with Sinput; use Sinput;
with Table; use Table;
with Widechar; use Widechar;
with GNAT.Heap_Sort_A;
package body Lib.Xref is
------------------
-- Declarations --
------------------
-- The Xref table is used to record references. The Loc field is set
-- to No_Location for a definition entry.
subtype Xref_Entry_Number is Int;
type Xref_Entry is record
Ent : Entity_Id;
-- Entity referenced (E parameter to Generate_Reference)
Def : Source_Ptr;
-- Original source location for entity being referenced. Note that
-- these values are used only during the output process, they are
-- not set when the entries are originally built. This is because
-- private entities can be swapped when the initial call is made.
Loc : Source_Ptr;
-- Location of reference (Original_Location (Sloc field of N parameter
-- to Generate_Reference). Set to No_Location for the case of a
-- defining occurrence.
Typ : Character;
-- Reference type (Typ param to Generate_Reference)
Eun : Unit_Number_Type;
-- Unit number corresponding to Ent
Lun : Unit_Number_Type;
-- Unit number corresponding to Loc. Value is undefined and not
-- referenced if Loc is set to No_Location.
end record;
package Xrefs is new Table.Table (
Table_Component_Type => Xref_Entry,
Table_Index_Type => Int,
Table_Low_Bound => 1,
Table_Initial => Alloc.Xrefs_Initial,
Table_Increment => Alloc.Xrefs_Increment,
Table_Name => "Xrefs");
-------------------------
-- Generate_Definition --
-------------------------
procedure Generate_Definition (E : Entity_Id) is
Loc : Source_Ptr;
Indx : Nat;
begin
pragma Assert (Nkind (E) in N_Entity);
-- Note that we do not test Xref_Entity_Letters here. It is too
-- early to do so, since we are often called before the entity
-- is fully constructed, so that the Ekind is still E_Void.
if Opt.Xref_Active
-- Definition must come from source
and then Comes_From_Source (E)
-- And must have a reasonable source location that is not
-- within an instance (all entities in instances are ignored)
and then Sloc (E) > No_Location
and then Instantiation_Location (Sloc (E)) = No_Location
-- And must be a non-internal name from the main source unit
and then In_Extended_Main_Source_Unit (E)
and then not Is_Internal_Name (Chars (E))
then
Xrefs.Increment_Last;
Indx := Xrefs.Last;
Loc := Original_Location (Sloc (E));
Xrefs.Table (Indx).Ent := E;
Xrefs.Table (Indx).Loc := No_Location;
Xrefs.Table (Indx).Eun := Get_Source_Unit (Loc);
Xrefs.Table (Indx).Lun := No_Unit;
end if;
end Generate_Definition;
---------------------------------
-- Generate_Operator_Reference --
---------------------------------
procedure Generate_Operator_Reference (N : Node_Id) is
begin
if not In_Extended_Main_Source_Unit (N) then
return;
end if;
-- If the operator is not a Standard operator, then we generate
-- a real reference to the user defined operator.
if Sloc (Entity (N)) /= Standard_Location then
Generate_Reference (Entity (N), N);
-- A reference to an implicit inequality operator is a also a
-- reference to the user-defined equality.
if Nkind (N) = N_Op_Ne
and then not Comes_From_Source (Entity (N))
and then Present (Corresponding_Equality (Entity (N)))
then
Generate_Reference (Corresponding_Equality (Entity (N)), N);
end if;
-- For the case of Standard operators, we mark the result type
-- as referenced. This ensures that in the case where we are
-- using a derived operator, we mark an entity of the unit that
-- implicitly defines this operator as used. Otherwise we may
-- think that no entity of the unit is used. The actual entity
-- marked as referenced is the first subtype, which is the user
-- defined entity that is relevant.
else
if Nkind (N) = N_Op_Eq
or else Nkind (N) = N_Op_Ne
or else Nkind (N) = N_Op_Le
or else Nkind (N) = N_Op_Lt
or else Nkind (N) = N_Op_Ge
or else Nkind (N) = N_Op_Gt
then
Set_Referenced (First_Subtype (Etype (Right_Opnd (N))));
else
Set_Referenced (First_Subtype (Etype (N)));
end if;
end if;
end Generate_Operator_Reference;
------------------------
-- Generate_Reference --
------------------------
procedure Generate_Reference
(E : Entity_Id;
N : Node_Id;
Typ : Character := 'r';
Set_Ref : Boolean := True;
Force : Boolean := False)
is
Indx : Nat;
Nod : Node_Id;
Ref : Source_Ptr;
Def : Source_Ptr;
Ent : Entity_Id;
begin
pragma Assert (Nkind (E) in N_Entity);
-- Never collect references if not in main source unit. However,
-- we omit this test if Typ is 'e', since these entries are
-- really structural, and it is useful to have them in units
-- that reference packages as well as units that define packages.
if not In_Extended_Main_Source_Unit (N)
and then Typ /= 'e'
then
return;
end if;
-- Unless the reference is forced, we ignore references where
-- the reference itself does not come from Source.
if not Force and then not Comes_From_Source (N) then
return;
end if;
-- Deal with setting entity as referenced, unless suppressed.
-- Note that we still do Set_Referenced on entities that do not
-- come from source. This situation arises when we have a source
-- reference to a derived operation, where the derived operation
-- itself does not come from source, but we still want to mark it
-- as referenced, since we really are referencing an entity in the
-- corresponding package (this avoids incorrect complaints that the
-- package contains no referenced entities).
if Set_Ref then
Set_Referenced (E);
-- If this is a subprogram instance, mark as well the internal
-- subprogram in the wrapper package, which may be a visible
-- compilation unit.
if Is_Overloadable (E)
and then Is_Generic_Instance (E)
and then Present (Alias (E))
then
Set_Referenced (Alias (E));
end if;
end if;
-- Generate reference if all conditions are met:
if
-- Cross referencing must be active
Opt.Xref_Active
-- The entity must be one for which we collect references
and then Xref_Entity_Letters (Ekind (E)) /= ' '
-- Both Sloc values must be set to something sensible
and then Sloc (E) > No_Location
and then Sloc (N) > No_Location
-- We ignore references from within an instance
and then Instantiation_Location (Sloc (N)) = No_Location
-- Ignore dummy references
and then Typ /= ' '
then
if Nkind (N) = N_Identifier
or else
Nkind (N) = N_Defining_Identifier
or else
Nkind (N) in N_Op
or else
Nkind (N) = N_Defining_Operator_Symbol
or else
(Nkind (N) = N_Character_Literal
and then Sloc (Entity (N)) /= Standard_Location)
or else
Nkind (N) = N_Defining_Character_Literal
then
Nod := N;
elsif Nkind (N) = N_Expanded_Name
or else
Nkind (N) = N_Selected_Component
then
Nod := Selector_Name (N);
else
return;
end if;
-- Normal case of source entity comes from source
if Comes_From_Source (E) then
Ent := E;
-- Entity does not come from source, but is a derived subprogram
-- and the derived subprogram comes from source, in which case
-- the reference is to this parent subprogram.
elsif Is_Overloadable (E)
and then Present (Alias (E))
and then Comes_From_Source (Alias (E))
then
Ent := Alias (E);
-- Ignore reference to any other source that is not from source
else
return;
end if;
-- Record reference to entity
Ref := Original_Location (Sloc (Nod));
Def := Original_Location (Sloc (Ent));
Xrefs.Increment_Last;
Indx := Xrefs.Last;
Xrefs.Table (Indx).Loc := Ref;
Xrefs.Table (Indx).Typ := Typ;
Xrefs.Table (Indx).Eun := Get_Source_Unit (Def);
Xrefs.Table (Indx).Lun := Get_Source_Unit (Ref);
Xrefs.Table (Indx).Ent := Ent;
end if;
end Generate_Reference;
-----------------------
-- Output_References --
-----------------------
procedure Output_References is
Nrefs : constant Nat := Xrefs.Last;
Rnums : array (0 .. Nrefs) of Nat;
-- This array contains numbers of references in the Xrefs table. This
-- list is sorted in output order. The extra 0'th entry is convenient
-- for the call to sort. When we sort the table, we move these entries
-- around, but we do not move the original table entries.
function Lt (Op1, Op2 : Natural) return Boolean;
-- Comparison function for Sort call
procedure Move (From : Natural; To : Natural);
-- Move procedure for Sort call
function Lt (Op1, Op2 : Natural) return Boolean is
T1 : Xref_Entry renames Xrefs.Table (Rnums (Nat (Op1)));
T2 : Xref_Entry renames Xrefs.Table (Rnums (Nat (Op2)));
begin
-- First test. If entity is in different unit, sort by unit
if T1.Eun /= T2.Eun then
return Dependency_Num (T1.Eun) < Dependency_Num (T2.Eun);
-- Second test, within same unit, sort by entity Sloc
elsif T1.Def /= T2.Def then
return T1.Def < T2.Def;
-- Third test, sort definitions ahead of references
elsif T1.Loc = No_Location then
return True;
elsif T2.Loc = No_Location then
return False;
-- Fourth test, for same entity, sort by reference location unit
elsif T1.Lun /= T2.Lun then
return Dependency_Num (T1.Lun) < Dependency_Num (T2.Lun);
-- Fifth test order of location within referencing unit
elsif T1.Loc /= T2.Loc then
return T1.Loc < T2.Loc;
-- Finally, for two locations at the same address, we prefer
-- the one that does NOT have the type 'r' so that a modification
-- or extension takes preference, when there are more than one
-- reference at the same location.
else
return T2.Typ = 'r';
end if;
end Lt;
procedure Move (From : Natural; To : Natural) is
begin
Rnums (Nat (To)) := Rnums (Nat (From));
end Move;
-- Start of processing for Output_References
begin
if not Opt.Xref_Active then
return;
end if;
-- Capture the definition Sloc values. We delay doing this till now,
-- since at the time the reference or definition is made, private
-- types may be swapped, and the Sloc value may be incorrect. We
-- also set up the pointer vector for the sort.
for J in 1 .. Nrefs loop
Rnums (J) := J;
Xrefs.Table (J).Def :=
Original_Location (Sloc (Xrefs.Table (J).Ent));
end loop;
-- Sort the references
GNAT.Heap_Sort_A.Sort
(Integer (Nrefs),
Move'Unrestricted_Access,
Lt'Unrestricted_Access);
-- Now output the references
Output_Refs : declare
Curxu : Unit_Number_Type;
-- Current xref unit
Curru : Unit_Number_Type;
-- Current reference unit for one entity
Cursrc : Source_Buffer_Ptr;
-- Current xref unit source text
Curent : Entity_Id;
-- Current entity
Curnam : String (1 .. Name_Buffer'Length);
Curlen : Natural;
-- Simple name and length of current entity
Curdef : Source_Ptr;
-- Original source location for current entity
Crloc : Source_Ptr;
-- Current reference location
Ctyp : Character;
-- Entity type character
Tref : Entity_Id;
-- Type reference
Rref : Node_Id;
-- Renaming reference
Trunit : Unit_Number_Type;
-- Unit number for type reference
function Name_Change (X : Entity_Id) return Boolean;
-- Determines if entity X has a different simple name from Curent
-----------------
-- Name_Change --
-----------------
function Name_Change (X : Entity_Id) return Boolean is
begin
Get_Unqualified_Name_String (Chars (X));
if Name_Len /= Curlen then
return True;
else
return Name_Buffer (1 .. Curlen) /= Curnam (1 .. Curlen);
end if;
end Name_Change;
-- Start of processing for Output_Refs
begin
Curxu := No_Unit;
Curent := Empty;
Curdef := No_Location;
Curru := No_Unit;
Crloc := No_Location;
for Refno in 1 .. Nrefs loop
Output_One_Ref : declare
XE : Xref_Entry renames Xrefs.Table (Rnums (Refno));
-- The current entry to be accessed
P : Source_Ptr;
-- Used to index into source buffer to get entity name
P2 : Source_Ptr;
WC : Char_Code;
Err : Boolean;
Ent : Entity_Id;
Sav : Entity_Id;
Left : Character;
Right : Character;
-- Used for {} or <> for type reference
procedure Output_Instantiation_Refs (Loc : Source_Ptr);
-- Recursive procedure to output instantiation references for
-- the given source ptr in [file|line[...]] form. No output
-- if the given location is not a generic template reference.
-------------------------------
-- Output_Instantiation_Refs --
-------------------------------
procedure Output_Instantiation_Refs (Loc : Source_Ptr) is
Iloc : constant Source_Ptr := Instantiation_Location (Loc);
Lun : Unit_Number_Type;
begin
-- Nothing to do if this is not an instantiation
if Iloc = No_Location then
return;
end if;
-- For now, nothing to do unless special debug flag set
if not Debug_Flag_MM then
return;
end if;
-- Output instantiation reference
Write_Info_Char ('[');
Lun := Get_Source_Unit (Iloc);
if Lun /= Curru then
Curru := XE.Lun;
Write_Info_Nat (Dependency_Num (Curru));
Write_Info_Char ('|');
end if;
Write_Info_Nat (Int (Get_Logical_Line_Number (Iloc)));
-- Recursive call to get nested instantiations
Output_Instantiation_Refs (Iloc);
-- Output final ] after call to get proper nesting
Write_Info_Char (']');
return;
end Output_Instantiation_Refs;
-- Start of processing for Output_One_Ref
begin
Ent := XE.Ent;
Ctyp := Xref_Entity_Letters (Ekind (Ent));
-- Skip reference if it is the only reference to an entity,
-- and it is an end-line reference, and the entity is not in
-- the current extended source. This prevents junk entries
-- consisting only of packages with end lines, where no
-- entity from the package is actually referenced.
if XE.Typ = 'e'
and then Ent /= Curent
and then (Refno = Nrefs or else
Ent /= Xrefs.Table (Rnums (Refno + 1)).Ent)
and then
not In_Extended_Main_Source_Unit (Ent)
then
goto Continue;
end if;
-- For private type, get full view type
if Ctyp = '+'
and then Present (Full_View (XE.Ent))
then
Ent := Underlying_Type (Ent);
if Present (Ent) then
Ctyp := Xref_Entity_Letters (Ekind (Ent));
end if;
end if;
-- Special exception for Boolean
if Ctyp = 'E' and then Is_Boolean_Type (Ent) then
Ctyp := 'B';
end if;
-- For variable reference, get corresponding type
if Ctyp = '*' then
Ent := Etype (XE.Ent);
Ctyp := Fold_Lower (Xref_Entity_Letters (Ekind (Ent)));
-- If variable is private type, get full view type
if Ctyp = '+'
and then Present (Full_View (Etype (XE.Ent)))
then
Ent := Underlying_Type (Etype (XE.Ent));
if Present (Ent) then
Ctyp := Xref_Entity_Letters (Ekind (Ent));
end if;
end if;
-- Special handling for access parameter
if Ekind (Etype (XE.Ent)) = E_Anonymous_Access_Type
and then Is_Formal (XE.Ent)
then
Ctyp := 'p';
-- Special handling for Boolean
elsif Ctyp = 'e' and then Is_Boolean_Type (Ent) then
Ctyp := 'b';
end if;
end if;
-- Only output reference if interesting type of entity,
-- and suppress self references. Also suppress definitions
-- of body formals (we only treat these as references, and
-- the references were separately recorded).
if Ctyp /= ' '
and then XE.Loc /= XE.Def
and then (not Is_Formal (XE.Ent)
or else No (Spec_Entity (XE.Ent)))
then
-- Start new Xref section if new xref unit
if XE.Eun /= Curxu then
if Write_Info_Col > 1 then
Write_Info_EOL;
end if;
Curxu := XE.Eun;
Cursrc := Source_Text (Source_Index (Curxu));
Write_Info_Initiate ('X');
Write_Info_Char (' ');
Write_Info_Nat (Dependency_Num (XE.Eun));
Write_Info_Char (' ');
Write_Info_Name (Reference_Name (Source_Index (XE.Eun)));
end if;
-- Start new Entity line if new entity. Note that we
-- consider two entities the same if they have the same
-- name and source location. This causes entities in
-- instantiations to be treated as though they referred
-- to the template.
if No (Curent)
or else
(XE.Ent /= Curent
and then
(Name_Change (XE.Ent) or else XE.Def /= Curdef))
then
Curent := XE.Ent;
Curdef := XE.Def;
Get_Unqualified_Name_String (Chars (XE.Ent));
Curlen := Name_Len;
Curnam (1 .. Curlen) := Name_Buffer (1 .. Curlen);
if Write_Info_Col > 1 then
Write_Info_EOL;
end if;
-- Write column number information
Write_Info_Nat (Int (Get_Logical_Line_Number (XE.Def)));
Write_Info_Char (Ctyp);
Write_Info_Nat (Int (Get_Column_Number (XE.Def)));
-- Write level information
if Is_Public (Curent) and then not Is_Hidden (Curent) then
Write_Info_Char ('*');
else
Write_Info_Char (' ');
end if;
-- Output entity name. We use the occurrence from the
-- actual source program at the definition point
P := Original_Location (Sloc (XE.Ent));
-- Entity is character literal
if Cursrc (P) = ''' then
Write_Info_Char (Cursrc (P));
Write_Info_Char (Cursrc (P + 1));
Write_Info_Char (Cursrc (P + 2));
-- Entity is operator symbol
elsif Cursrc (P) = '"' or else Cursrc (P) = '%' then
Write_Info_Char (Cursrc (P));
P2 := P;
loop
P2 := P2 + 1;
Write_Info_Char (Cursrc (P2));
exit when Cursrc (P2) = Cursrc (P);
end loop;
-- Entity is identifier
else
loop
if Is_Start_Of_Wide_Char (Cursrc, P) then
Scan_Wide (Cursrc, P, WC, Err);
elsif not Identifier_Char (Cursrc (P)) then
exit;
else
P := P + 1;
end if;
end loop;
for J in
Original_Location (Sloc (XE.Ent)) .. P - 1
loop
Write_Info_Char (Cursrc (J));
end loop;
end if;
-- See if we have a renaming reference
if Is_Object (XE.Ent)
and then Present (Renamed_Object (XE.Ent))
then
Rref := Renamed_Object (XE.Ent);
elsif Is_Overloadable (XE.Ent)
and then Nkind (Parent (Declaration_Node (XE.Ent))) =
N_Subprogram_Renaming_Declaration
then
Rref := Name (Parent (Declaration_Node (XE.Ent)));
elsif Ekind (XE.Ent) = E_Package
and then Nkind (Declaration_Node (XE.Ent)) =
N_Package_Renaming_Declaration
then
Rref := Name (Declaration_Node (XE.Ent));
else
Rref := Empty;
end if;
if Present (Rref) then
if Nkind (Rref) = N_Expanded_Name then
Rref := Selector_Name (Rref);
end if;
if Nkind (Rref) /= N_Identifier then
Rref := Empty;
end if;
end if;
-- Write out renaming reference if we have one
if Debug_Flag_MM and then Present (Rref) then
Write_Info_Char ('=');
Write_Info_Nat
(Int (Get_Logical_Line_Number (Sloc (Rref))));
Write_Info_Char (':');
Write_Info_Nat
(Int (Get_Column_Number (Sloc (Rref))));
end if;
-- See if we have a type reference
Tref := XE.Ent;
Left := '{';
Right := '}';
loop
Sav := Tref;
-- Processing for types
if Is_Type (Tref) then
-- Case of base type
if Base_Type (Tref) = Tref then
-- If derived, then get first subtype
if Tref /= Etype (Tref) then
Tref := First_Subtype (Etype (Tref));
-- Set brackets for derived type, but don't
-- override pointer case since the fact that
-- something is a pointer is more important
if Left /= '(' then
Left := '<';
Right := '>';
end if;
-- If non-derived ptr, get designated type
elsif Is_Access_Type (Tref) then
Tref := Designated_Type (Tref);
Left := '(';
Right := ')';
-- For other non-derived base types, nothing
else
exit;
end if;
-- For a subtype, go to ancestor subtype
else
Tref := Ancestor_Subtype (Tref);
-- If no ancestor subtype, go to base type
if No (Tref) then
Tref := Base_Type (Sav);
end if;
end if;
-- For objects, functions, enum literals,
-- just get type from Etype field.
elsif Is_Object (Tref)
or else Ekind (Tref) = E_Enumeration_Literal
or else Ekind (Tref) = E_Function
or else Ekind (Tref) = E_Operator
then
Tref := Etype (Tref);
-- For anything else, exit
else
exit;
end if;
-- Exit if no type reference, or we are stuck in
-- some loop trying to find the type reference.
exit when No (Tref) or else Tref = Sav;
-- Here we have a type reference to output
-- Case of standard entity, output name
if Sloc (Tref) = Standard_Location then
-- For now, output only if special -gnatdM flag set
exit when not Debug_Flag_MM;
Write_Info_Char (Left);
Write_Info_Name (Chars (Tref));
Write_Info_Char (Right);
exit;
-- Case of source entity, output location
elsif Comes_From_Source (Tref) then
-- For now, output only derived type entries
-- unless we have special debug flag -gnatdM
exit when not (Debug_Flag_MM or else Left = '<');
-- Do not output type reference if referenced
-- entity is not in the main unit and is itself
-- not referenced, since otherwise the reference
-- will dangle.
exit when not Referenced (Tref)
and then not In_Extended_Main_Source_Unit (Tref);
-- Output the reference
Write_Info_Char (Left);
Trunit := Get_Source_Unit (Sloc (Tref));
if Trunit /= Curxu then
Write_Info_Nat (Dependency_Num (Trunit));
Write_Info_Char ('|');
end if;
Write_Info_Nat
(Int (Get_Logical_Line_Number (Sloc (Tref))));
Write_Info_Char
(Xref_Entity_Letters (Ekind (Tref)));
Write_Info_Nat
(Int (Get_Column_Number (Sloc (Tref))));
Write_Info_Char (Right);
exit;
-- If non-standard, non-source entity, keep looking
else
null;
end if;
end loop;
-- End of processing for entity output
Curru := Curxu;
Crloc := No_Location;
end if;
-- Output the reference
if XE.Loc /= No_Location
and then XE.Loc /= Crloc
then
Crloc := XE.Loc;
-- Start continuation if line full, else blank
if Write_Info_Col > 72 then
Write_Info_EOL;
Write_Info_Initiate ('.');
end if;
Write_Info_Char (' ');
-- Output file number if changed
if XE.Lun /= Curru then
Curru := XE.Lun;
Write_Info_Nat (Dependency_Num (Curru));
Write_Info_Char ('|');
end if;
Write_Info_Nat (Int (Get_Logical_Line_Number (XE.Loc)));
Write_Info_Char (XE.Typ);
Write_Info_Nat (Int (Get_Column_Number (XE.Loc)));
Output_Instantiation_Refs (Sloc (XE.Ent));
end if;
end if;
end Output_One_Ref;
<<Continue>>
null;
end loop;
Write_Info_EOL;
end Output_Refs;
end Output_References;
end Lib.Xref;
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