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2463 | ------------------------------------------------------------------------------
-- --
-- GNATSTUB COMPONENTS --
-- --
-- G N A T S T U B . S A M P L E R --
-- --
-- B o d y --
-- --
-- Copyright (C) 1997-2017, Free Software Foundation, Inc. --
-- --
-- Gnatstub is free software; you can redistribute it and/or modify it --
-- under the terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 3 or (at your option) any later --
-- version. Gnatstub is distributed in the hope that it will be useful, but --
-- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABI- --
-- LITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public Li- --
-- cense for more details. You should have received a copy of the GNU --
-- General Public License distributed with GNAT; see file COPYING3. If not, --
-- go to http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- Gnatstub was originally developed by Alexei Kuchumov as a part of --
-- collaboration between Software Engineering Laboratory of the Swiss --
-- Federal Institute of Technology in Lausanne, Switzerland, and the --
-- Scientific Research Computer Center of the Moscow State University, --
-- Russia. This work was supported by a grant from the Swiss National --
-- Science Foundation, no 7SUPJ048247, funding a project "Development of --
-- ASIS for GNAT with industry quality". --
-- --
-- Gnatstub is now maintained by AdaCore (http://www.adacore.com). --
-- --
------------------------------------------------------------------------------
pragma Ada_2012;
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Strings.Fixed; use Ada.Strings.Fixed;
with Ada.Wide_Characters.Handling; use Ada.Wide_Characters.Handling;
with GNAT.Directory_Operations;
with Ada.IO_Exceptions;
with Ada.Strings; use Ada.Strings;
with Ada.Strings.Wide_Fixed; use Ada.Strings.Wide_Fixed;
with Ada.Unchecked_Deallocation;
with Ada.Text_IO;
with Ada.Wide_Text_IO; use Ada.Wide_Text_IO;
with GNAT.OS_Lib; use GNAT.OS_Lib;
with GNATCOLL.Projects; use GNATCOLL.Projects;
with GNATCOLL.VFS; use GNATCOLL.VFS;
with Asis.Ada_Environments; use Asis.Ada_Environments;
with Asis.Compilation_Units; use Asis.Compilation_Units;
with Asis.Declarations; use Asis.Declarations;
with Asis.Elements; use Asis.Elements;
with Asis.Errors;
with Asis.Exceptions; use Asis.Exceptions;
with Asis.Extensions; use Asis.Extensions;
with Asis.Extensions.Flat_Kinds; use Asis.Extensions.Flat_Kinds;
with Asis.Implementation; use Asis.Implementation;
with Asis.Iterator; use Asis.Iterator;
with Asis.Text; use Asis.Text;
with Hostparm;
with Opt; use all type Opt.Ada_Version_Type;
with ASIS_UL.Common; use ASIS_UL.Common;
with ASIS_UL.Compiler_Options; use ASIS_UL.Compiler_Options;
with ASIS_UL.Debug; use ASIS_UL.Debug;
with ASIS_UL.Environment;
with ASIS_UL.Misc; use ASIS_UL.Misc;
with ASIS_UL.Options; use ASIS_UL.Options;
with ASIS_UL.Output; use ASIS_UL.Output;
with ASIS_UL.String_Utilities; use ASIS_UL.String_Utilities;
with ASIS_UL.Utilities; use ASIS_UL.Utilities;
with Gnatstub.Options; use Gnatstub.Options;
with Gnatstub.Projects;
package body Gnatstub.Sampler is
use type Asis.Errors.Error_Kinds;
My_Context : Asis.Context;
Level : Integer := 0;
-- nesting level of a spec being processed
Body_File : File_Type;
Tree_File : File_Type;
Spec_File : File_Type;
Arg_File_Info : File_Info;
Arg_Virt_File : Virtual_File;
-- Needed when creating separate bodies:
Subunit_Name_Temlate : String_Access;
-- Used to create the name of a separate body to generate. Has the
-- following structure:
--
-- <parent_body_name><dot_replacement><suffix>
--
-- where <suffix> is the suffix defined for separate bodies by the argument
-- project file (if any) or just ".adb"
First_Idx : Natural;
Last_Idx : Natural;
Insert_Idx : Natural;
-- Indexes into Subunit_Name_Temlate. Insert_Idx points to the place where
-- the separate body name should be inserted to get the subunit name -
-- to the last character of <dot_replacement>
type Subunit_Name_Casings is (Lowercase, Uppercase, Mixedcase);
Subunit_Name_Casing : Subunit_Name_Casings := Lowercase;
------------------------------------
-- The note about pretty-printing --
------------------------------------
-- We do not put any special efforts in getting a very nice formatting of
-- the sample body code generated by gnatstub. This code is supposed to be
-- revised manually by a gnatstub user, so only some very general elements
-- of pretty-printing are implemented in gnatstub
-----------------------
-- Local subprograms --
-----------------------
function Get_Tree_Name return String;
-- Computes the name of the tree file from Short_File_Name.
procedure Check_Parameters;
-- Checks, that Gnatstub options and files existing in the file
-- system fit each other. If the check fails, generates the diagnostic
-- message and raises Parameter_Error
procedure Prepare_Context;
-- If in NON-GNSA mode, this procedure creates a tree file or checks if the
-- tree file already exists, depending on options. Then it defines and
-- opens the ASIS Context.
-- In GNSA mode, it defines and opens the ASIS GNSA Context
type Element_Node;
type Link is access all Element_Node;
type Element_Node is record
Spec : Asis.Element := Nil_Element;
Spec_Name : Program_Text_Access;
-- not used for incomplete type declarations
Up : Link;
Down : Link;
Prev : Link;
Next : Link;
Last : Link;
end record;
-- An element of a dynamic structure representing a "skeleton" of the body
-- to be generated
--
-- Logically this structure is a list of elements representing local
-- bodies and sublists representing the bodies which are a components of
-- some local body. Each list and sublist is represented by its first
-- element. For this first list element, the field Last is used to point
-- to the last element in this list to speed up adding the new element if
-- we do not have to order alphabetically the local bodies.
Body_Structure : aliased Element_Node;
Body_Structure_Access : constant Link := Body_Structure'Access;
-- this is a "design" for a body to generate. It contains references
-- to the elements from the argument spec for which body samples should
-- be generated, ordered alphabetically. The top of this link structure
-- is the Element representing a unit declaration from the argument
-- compilation unit.
procedure Free is new Ada.Unchecked_Deallocation
(Object => Element_Node, Name => Link);
procedure Free_Body_Structure;
-- Releases all the memory occupied by the internal representation of the
-- body stub to generate. Is needed when separate units are generated, in
-- this case the internal representation is created for each separate body.
-------------------------------------------------
-- Actuals for Traverse_Element instantiation --
-------------------------------------------------
type Body_State is record
Argument_Spec : Boolean := True;
-- flag indicating if we are in the very beginning (very top)
-- of scanning the argument library unit declaration
Current_List : Link;
-- declaration list in which a currently processed spec
-- should be inserted;
Last_Top : Link;
-- an element which represents a declaration from which the currently
-- processed sublist was originated
New_List_Needed : Boolean := False;
-- flag indication if a new sublist should be created
end record;
Initial_State : constant Body_State :=
(Argument_Spec => True,
Current_List => null,
Last_Top => null,
New_List_Needed => False);
procedure Create_Element_Node
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out Body_State);
-- when visiting an Element representing something for which a body
-- sample may be required, we check if the body is really required
-- and insert the corresponding Element on the right place in Body_State
-- if it is.
procedure Go_Up
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out Body_State);
-- when leaving a [generic] package declaration or a protected [type]
-- declaration, we have to go one step up in Body_State structure.
procedure Create_Body_Structure is new Traverse_Element
(State_Information => Body_State,
Pre_Operation => Create_Element_Node,
Post_Operation => Go_Up);
-- Creates Body_Structure by traversing an argument spec and choosing
-- specs to create body samples for
function Requires_Body (El : Element) return Boolean;
-- checks if a body sample should be created for an element
function Name (El : Asis.Element) return Program_Text;
-- returns a defining name string image for a declaration which
-- defines exactly one name. This should definitely be made an extension
-- query
function Bodyless_Package (Node : Link) return Boolean;
-- Checks if Node represents a local package which does not require
-- a body. (It is an error to call this function for a null
-- argument
procedure Generate_CU_Header
(Success : out Boolean;
For_Subunit : Boolean := False;
Subunit_Name : Asis.Element := Nil_Element);
-- Generates in Body_File the comment header for the sample body. Sets
-- Success to True if the comment header is successfully generated.
-- If For_Subunit is ON, Subunit_Name should be set to the defining name
-- of the separate unit. In this case the standard header contains the
-- name of the separate unit, but not the argument unit. If
-- Gnatstub.Options.Header is set to From_Spec, for subunit it does NOT
-- contain the subunit name, the only change is replacing "S p e c' with
-- 'B o d y'
-- ??? Do we really need the Success parameter???
procedure Generate_Unit_Header (Node : Link);
-- Generates the comment header for a local program unit body. Does nothing
-- if No_Local_Comment_Headers is ON.
procedure Generate_Body_Structure;
-- generates in Body_File the Ada part of the sample body, using
-- the list structure created in Body_Structure as a template
-- The following group of subprograms generate completion for specific
-- kinds of specs:
procedure Generate_Package_Body (Node : Link);
procedure Generate_Function_Body (Node : Link);
procedure Generate_Procedure_Body (Node : Link);
procedure Generate_Entry_Body (Node : Link);
procedure Generate_Protected_Body (Node : Link);
procedure Generate_Task_Body (Node : Link);
procedure Generate_Full_Type_Declaration (Node : Link);
procedure Generate_Separate_Stubs (Body_Unit : Asis.Compilation_Unit);
-- If Body_Unit is a library unit body, this procedure generates stub
-- subunits for the body stubs contained in this unit
procedure Generate_Profile (Node : Link; Change_Line : out Boolean);
-- Generates an entry_body_formal_part, parameter or parameter and result
-- profile for the body of a program unit represented by Node. Upon exit,
-- sets Change_Line is set True if the following "is" for the body should
-- be generated on a new line;
function Image_For_String (S : Program_Text) return Program_Text;
-- If S starts and ends with '"', return '"' & S & '"", otherwise return S.
-- This is needed to create an image of an operator symbol in generated
-- string constants.
procedure Emergency_Clean_Up;
-- Does clean up actions in case if an exception was raised during
-- creating a body sample (closes a Context, dissociates it, finalizes
-- ASIS, closes and deletes needed files.
function Allows_Var_Declaration
(Res_Profile : Asis.Element)
return Boolean;
-- This function assumes that Res_Profile represents the result profile
-- from a function specification, it checks if this profile denotes a type
-- that allow creating a local object of this type (to return as the
-- function result in the function body stub).
----------------------------
-- Allows_Var_Declaration --
----------------------------
function Allows_Var_Declaration
(Res_Profile : Asis.Element)
return Boolean
is
Tmp : Asis.Element;
Result : Boolean := False;
begin
if Element_Kind (Res_Profile) = An_Expression then
-- Definitely False for functions returning anonymous access
-- definitions
if Attribute_Kind (Res_Profile) = A_Base_Attribute then
Result := True;
else
Tmp := Normalize_Reference (Res_Profile);
Result := Can_Create_Return_Object (Tmp);
end if;
end if;
return Result;
end Allows_Var_Declaration;
----------------------
-- Bodyless_Package --
----------------------
function Bodyless_Package (Node : Link) return Boolean is
Result : Boolean := False;
Arg_Kind : constant Flat_Element_Kinds := Flat_Element_Kind (Node.Spec);
Next_Node : Link;
Next_List : Link;
begin
if Arg_Kind = A_Package_Declaration or else
Arg_Kind = A_Generic_Package_Declaration
then
Result := True;
if Node.Down /= null then
Next_List := Node.Down;
while Next_List.Prev /= null loop
Next_List := Next_List.Prev;
end loop;
Next_Node := Next_List;
while Next_Node /= null loop
if not Bodyless_Package (Next_Node) then
Result := False;
exit;
end if;
Next_Node := Next_Node.Next;
end loop;
end if;
end if;
return Result;
end Bodyless_Package;
----------------
-- Brief_Help --
----------------
procedure Brief_Help is
begin
pragma Style_Checks (Off);
Info ("Usage: gnatstub [options] filename [-cargs gcc_switches]");
Info ("");
Info (" filename Ada source file");
Info ("");
Info ("options:");
Info (" --version Display version and exit");
Info (" --help Display usage and exit");
Info ("");
Info (" -Pproject Use project file project. Only one such switch.");
Info (" can be used.");
Info (" -Xname=value specify an external reference for argument");
Info (" project file");
Info (" -eL follow all symbolic links when processing");
Info (" project files");
Info ("");
Info (" --subunits generate separate bodies for body stubs");
Info ("");
Info (" -f replace an existing body file (if any), with a body");
Info (" sample (is not allowed with '--subunits')");
Info (" -gnatec<path> use additional configuration file,");
Info (" same meaning as for gcc");
Info (" -gnatyMnnn maximum line length in a sample body");
Info (" -gnatyn (n in 1 .. 9) number of spaces used for indentation in");
Info (" a sample body");
Info (" -gnatyo alphabetically order local bodies");
Info (" -hg insert a sample comment header");
Info (" -hs insert the comment header from the spec");
Info (" --header-file=filename insert the comment header from the specified file");
Info (" -Idir source search dir, has the same meaning as for");
Info (" gcc and gnatmake");
Info (" -I- do not look for the sources in the default directory");
Info (" -in same as -gnatyn");
Info (" -k do not remove the tree file");
Info (" -lnnn same as -gnatyMnnn");
Info (" --no-exception avoid raising Program_Error in stubs");
Info (" --no-local-header no local comment headers for unit stubs");
Info (" -o body-name the name of the file to place the body into.");
Info (" --dir=directory place generated file(s) into directory");
Info (" -W(h|u|s|e|8|b) sets the wide character encoding of the result file");
Info (" h - Hex ESC encoding");
Info (" u - Upper half encoding");
Info (" s - Shift-JIS encoding");
Info (" e - EUC Encoding");
Info (" 8 - UTF-8 encoding");
Info (" b - Brackets encoding (this is the default)");
Info ("");
Info (" -q quiet mode");
Info (" -r reuse the tree file (if any) instead of creating it");
Info (" (-r also implies -k)");
Info (" -t overwrite the existing tree file");
Info (" -v verbose mode");
Info (" gcc_switches switches to be passed to gcc called by " & ASIS_UL.Common.Tool_Name.all);
pragma Style_Checks (On);
end Brief_Help;
----------------------
-- Check_Parameters --
----------------------
procedure Check_Parameters is
Str_Tmp : String_Access;
begin
-- First, check for incompatible combination of options:
if Generate_Subunits then
if Body_Form /= null then
Error ("result body name cannot be specified " &
"when generating subunits");
raise Parameter_Error;
end if;
if Overwrite_Body then
Error ("overwrite mode cannot be specified " &
"when generating subunits");
raise Parameter_Error;
end if;
end if;
if Body_Form = null then
Body_Form := new String'("");
end if;
-- checking if the file to process really exists:
if Gnatstub.Projects.Is_Specified (Gnatstub.Options.Gnatstub_Prj) then
Arg_Virt_File :=
Gnatstub.Projects.Create
(Gnatstub.Options.Gnatstub_Prj, +File_Name.all);
if Arg_Virt_File = No_File then
Error ("cannot find " & File_Name.all);
raise Parameter_Error;
end if;
Arg_File_Info := Info (Gnatstub.Options.Gnatstub_Prj, Arg_Virt_File);
Str_Tmp := new String'(+Full_Name (Arg_Virt_File));
Free (File_Name);
File_Name := new String'(Str_Tmp.all);
Free (Str_Tmp);
elsif not Is_Regular_File (File_Name.all) then
Error ("cannot find " & File_Name.all);
raise Parameter_Error;
end if;
if Test_Mode then
Alphabetical_Ordering := True;
Quiet_Mode := True;
Overwrite_Tree := True;
end if;
-- Naming for the result file(s):
File_Name_Len := File_Name'Length;
File_Name_First := File_Name'First;
File_Name_Last := File_Name'Last;
if Generate_Subunits then
if not Gnatstub.Projects.Is_Specified (Gnatstub.Options.Gnatstub_Prj)
and then
not (File_Name_Len >= 5 and then
File_Name (File_Name_Last - 3 .. File_Name_Last) = ".adb")
then
-- If we do not have a project file, than we expect a standard
-- naming scheme
Error ("standard naming scheme is expected " &
"for generating subunits");
raise Parameter_Error;
end if;
else
if not (File_Name_Len >= 5 and then
File_Name (File_Name_Last - 3 .. File_Name_Last) = ".ads")
and then
Body_Name = null
then
if Gnatstub.Projects.Is_Specified
(Gnatstub.Options.Gnatstub_Prj)
then
-- Try to compute the name of the result body from the project
Body_Name :=
new String'(+GNATCOLL.Projects.File_From_Unit
(Project => Project (Arg_File_Info),
Unit_Name => Unit_Name (Arg_File_Info),
Part => Unit_Body,
Language => "Ada",
File_Must_Exist => False));
else
if File_Name_Len >= 5 and then
File_Name (File_Name_Last - 3 .. File_Name_Last) = ".adb"
then
-- A special case: the argument file looks like a body file
Error ("input file looks like a body");
end if;
-- The general case
Error ("output file name should be provided because " &
File_Name.all &
" does not follow GNAT naming rules for " &
"spec files");
raise Parameter_Error;
end if;
end if;
end if;
-- if destination is set, check if the destination directory exists:
if Destination_Dir.all /= "" and then
not Is_Directory (Destination_Dir.all)
then
Error ("directory " & Destination_Dir.all & " does not exist");
raise Parameter_Error;
end if;
-- If subunits should be generated, we will prepare the template for
-- subunit file name
if Generate_Subunits then
if Gnatstub.Projects.Is_Specified (Gnatstub.Options.Gnatstub_Prj) then
declare
Arrt_Dot_Replacement : constant Attribute_Pkg_String :=
Build (Naming_Package, "Dot_Replacement");
Arrt_Body_Suffix : constant Attribute_Pkg_String :=
Build (Naming_Package, "Body_Suffix");
Arrt_Separate_Suffix : constant Attribute_Pkg_String :=
Build (Naming_Package, "Separate_Suffix");
Arrt_Casing : constant Attribute_Pkg_String :=
Build (Naming_Package, "Casing");
Dot_Rep : constant String :=
Attribute_Value
(Project => Project (Arg_File_Info),
Attribute => Arrt_Dot_Replacement,
Use_Extended => True);
Body_Suf : constant String :=
Attribute_Value
(Project => Project (Arg_File_Info),
Index => "Ada",
Attribute => Arrt_Body_Suffix,
Use_Extended => True);
Sep_Suf : constant String :=
Attribute_Value
(Project => Project (Arg_File_Info),
Attribute => Arrt_Separate_Suffix,
Use_Extended => True);
Casing_Str : constant String :=
Attribute_Value
(Project => Project (Arg_File_Info),
Attribute => Arrt_Casing,
Use_Extended => True);
begin
if Destination_Dir.all /= "" then
Str_Tmp :=
new String'
(Destination_Dir.all & Directory_Separator &
GNAT.Directory_Operations.Base_Name (File_Name.all));
else
Str_Tmp := new String'(File_Name.all);
end if;
First_Idx := Str_Tmp'First;
Insert_Idx :=
Natural'Max (Index (Str_Tmp.all, Body_Suf, Backward),
Index (Str_Tmp.all, Sep_Suf, Backward));
Subunit_Name_Temlate := new String'
(Str_Tmp (First_Idx .. Insert_Idx - 1) &
Dot_Rep & Sep_Suf);
Insert_Idx := Insert_Idx + Dot_Rep'Length - 1;
if Casing_Str = "lowercase" then
Subunit_Name_Casing := Lowercase;
elsif Casing_Str = "uppercase" then
Subunit_Name_Casing := Uppercase;
elsif Casing_Str = "mixedcase" then
Subunit_Name_Casing := Mixedcase;
else
Error ("cannot detect subunit file name casing");
end if;
Free (Str_Tmp);
end;
else
First_Idx := File_Name'First;
Insert_Idx := File_Name'Last - 4;
Subunit_Name_Temlate :=
new String'(File_Name (First_Idx .. Insert_Idx) & "-.adb");
Insert_Idx := Insert_Idx + 1;
end if;
Last_Idx := Subunit_Name_Temlate'Last;
end if;
-- Compute the body file name if it is not set or check that it does
-- not contain the directory info otherwise
Short_File_Name :=
new String'(GNAT.Directory_Operations.Base_Name (File_Name.all));
Short_File_Name_Len := Short_File_Name'Length;
Short_File_Name_First := Short_File_Name'First;
Short_File_Name_Last := Short_File_Name'Last;
if not Generate_Subunits then
if Body_Name = null then
if Destination_Dir.all = "" then
Body_Name := new String'(Short_File_Name.all);
else
Body_Name := new String'
(Destination_Dir.all &
Directory_Separator &
Short_File_Name.all);
end if;
Body_Name (Body_Name'Last) := 'b';
else
if GNAT.Directory_Operations.Base_Name (Body_Name.all) /=
Body_Name.all
then
Error
("output file name should not contain any path information");
raise Parameter_Error;
end if;
if Destination_Dir.all /= "" then
Str_Tmp := new String'(Destination_Dir.all &
Directory_Separator &
Body_Name.all);
Free (Body_Name);
Body_Name := new String'(Str_Tmp.all);
Free (Str_Tmp);
end if;
end if;
Full_Body_Name :=
-- new String'(Str_Tmp.all);
new String'(GNAT.Directory_Operations.Format_Pathname
(Normalize_Pathname (Body_Name.all)));
-- Normalizing the argument name
Str_Tmp :=
new String'(GNAT.Directory_Operations.Format_Pathname
(Normalize_Pathname (File_Name.all)));
Full_File_Name := new String'(Str_Tmp.all);
Free (Str_Tmp);
-- Check if the source and the destination are not the same
if Full_File_Name.all = Full_Body_Name.all then
Error ("output file is the same as the argument file - " &
"check the file names");
raise Parameter_Error;
end if;
-- checking if a body already exists:
if Is_Regular_File (Body_Name.all) then
if Overwrite_Body then
if Is_Writable_File (Body_Name.all) then
begin
Open (Body_File, Out_File, Body_Name.all, Body_Form.all);
Delete (Body_File);
exception
when others =>
Error ("cannot delete the existing body for " &
File_Name.all);
raise Parameter_Error;
end;
else
Error ("the existing body for " & File_Name.all &
" cannot be overwritten");
raise Parameter_Error;
end if;
else
Error ("the body for " & File_Name.all & " already exists; " &
"use -f to overwrite it");
raise Parameter_Error;
end if;
end if;
end if;
-- Check that the comment header file exists:
if Header = From_File
and then
not Is_Regular_File (Header_File_Name.all)
then
Error ("the file " & Header_File_Name.all &
" to take the comment header from does not exists");
raise Parameter_Error;
end if;
-- now, checking the situation with the tree file:
Tree_Name := new String'(Get_Tree_Name);
if Is_Regular_File (Tree_Name.all) then
Tree_Exists := True;
if not (Reuse_Tree or else Overwrite_Tree) then
Error ("tree file " & Tree_Name.all & " already exists" &
" use -r or -t to reuse or to overwrite it");
raise Parameter_Error;
end if;
else
if Reuse_Tree then
Error ("cannot find tree file" & Tree_Name.all & " (-r is set)");
raise Parameter_Error;
end if;
end if;
if Reuse_Tree then
Delete_Tree := False;
Overwrite_Tree := False;
end if;
Store_I_Options;
Free (Destination_Dir);
if Gnatstub.Options.Gnatstub_Prj.Is_Specified then
Gnatstub.Projects.Set_Global_Result_Dirs
(Gnatstub.Options.Gnatstub_Prj);
Gnatstub.Projects.Set_Individual_Source_Options
(Gnatstub.Options.Gnatstub_Prj);
Set_Arg_List;
end if;
Set_Arg_List;
end Check_Parameters;
--------------
-- Clean_Up --
--------------
procedure Clean_Up is
begin
if Delete_Tree and then Tree_Exists then
-- Deleting the tree file itself
Open (Tree_File, In_File, Tree_Name.all);
Delete (Tree_File);
-- Deleting the ALI file which was created along with the tree file
-- We use the modified Tree_Name for this, because we do not need
-- Tree_Name any more
Tree_Name (Tree_Name'Last - 2 .. Tree_Name'Last) := "ali";
if Is_Regular_File (Tree_Name.all) then
Open (Tree_File, In_File, Tree_Name.all);
Delete (Tree_File);
end if;
end if;
if Need_Tmp_ADA_PRJ_INCLUDE_FILE
and then
ADA_PRJ_INCLUDE_FILE_Full_Name /= null
then
Open (Tree_File, In_File, ADA_PRJ_INCLUDE_FILE_Full_Name.all);
Delete (Tree_File);
end if;
ASIS_UL.Environment.Clean_Up;
end Clean_Up;
-------------------------
-- Create_Element_Node --
-------------------------
procedure Create_Element_Node
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out Body_State)
is
Arg_Kind : constant Flat_Element_Kinds := Flat_Element_Kind (Element);
Current_Node : Link;
procedure Insert_In_List
(State : in out Body_State;
El : Asis.Element;
New_Node : out Link);
-- inserts an argument Element in the current list, keeping the
-- alphabetic ordering. Creates a new sublist if needed.
-- New_Node returns the reference to the newly inserted node
--------------------
-- Insert_In_List --
--------------------
procedure Insert_In_List
(State : in out Body_State;
El : Asis.Element;
New_Node : out Link)
is
Next_Node : Link;
Insert_After : Link;
Insert_First : Boolean := False;
Insert_Last : Boolean := False;
begin
New_Node := new Element_Node;
New_Node.Spec := El;
New_Node.Spec_Name := new Program_Text'(Name (El));
if State.New_List_Needed then
-- here we have to set up a new sub-list:
State.Current_List := New_Node;
New_Node.Up := State.Last_Top;
State.Last_Top.Down := New_Node;
State.New_List_Needed := False;
New_Node.Last := New_Node;
-- We've just created a new list. It contains a single element
-- which is its last Element, so we are setting the link to the
-- last element to the Prev field of the list head element
else
-- here we have to insert New_Node in an existing list,
-- keeping the alphabetical order of program unit names
New_Node.Up := State.Current_List.Up;
if Arg_Kind in An_Incomplete_Type_Declaration ..
A_Tagged_Incomplete_Type_Declaration
then
-- no need for alphabetical ordering, inserting in the
-- very beginning:
New_Node.Last := State.Current_List.Last;
-- New_Node will be the head element of the list, so we have
-- to copy into this new head element the reference to the
-- last element of the list.
New_Node.Next := State.Current_List;
State.Current_List.Prev := New_Node;
State.Current_List := New_Node;
else
if Alphabetical_Ordering then
Next_Node := State.Current_List;
-- finding the right place in the current list
loop
if Flat_Element_Kind (Next_Node.Spec) in
An_Incomplete_Type_Declaration ..
A_Tagged_Incomplete_Type_Declaration
then
if Next_Node.Next = null then
-- nothing except incomplete types in the list:
Insert_After := Next_Node;
exit;
end if;
else
-- here we have a program unit spec
if To_Lower_Case (New_Node.Spec_Name.all) <
To_Lower_Case (Next_Node.Spec_Name.all)
then
if Next_Node.Prev = null then
Insert_First := True;
else
Insert_After := Next_Node.Prev;
end if;
exit;
end if;
end if;
if Next_Node.Next = null then
Insert_After := Next_Node;
Insert_Last := True;
exit;
else
Next_Node := Next_Node.Next;
end if;
end loop;
else
Insert_After := State.Current_List.Last;
Insert_Last := True;
end if;
-- inserting in the list:
if Insert_First then
-- inserting in the beginning:
New_Node.Next := State.Current_List;
State.Current_List.Prev := New_Node;
State.Current_List := New_Node;
elsif Insert_Last then
New_Node.Prev := Insert_After;
Insert_After.Next := New_Node;
State.Current_List.Last := New_Node;
else
New_Node.Next := Insert_After.Next;
Insert_After.Next.Prev := New_Node;
New_Node.Prev := Insert_After;
Insert_After.Next := New_Node;
end if;
end if;
end if;
end Insert_In_List;
-- start of the processing of Create_Element_Node
begin
if State.Argument_Spec then
Body_Structure.Spec := Element;
State.Argument_Spec := False;
Body_Structure.Spec_Name := new Program_Text'(Name (Element));
Current_Node := Body_Structure'Access;
elsif Arg_Kind = A_Defining_Identifier then
-- skipping a defining name of a spec which may contain local
-- specs requiring bodies
null;
elsif Arg_Kind = A_Protected_Definition then
-- we just have to go one level down to process protected items:
null;
elsif not Requires_Body (Element) then
Control := Abandon_Children;
return;
else
Insert_In_List (State, Element, Current_Node);
end if;
if Arg_Kind = A_Package_Declaration or else
Arg_Kind = A_Generic_Package_Declaration or else
Arg_Kind = A_Single_Protected_Declaration or else
Arg_Kind = A_Protected_Type_Declaration
then
-- here we may have specs requiring bodies inside a construct
State.New_List_Needed := True;
State.Last_Top := Current_Node;
elsif Arg_Kind = A_Protected_Definition then
-- we have to skip this syntax level
null;
else
-- no need to go deeper
Control := Abandon_Children;
end if;
end Create_Element_Node;
-------------------
-- Create_Sample --
-------------------
procedure Create_Sample is
CU : Asis.Compilation_Unit;
CU_Kind : Unit_Kinds;
My_Control : Traverse_Control := Continue;
My_State : Body_State;
Header_Created : Boolean;
begin
CU := Main_Unit_In_Current_Tree (My_Context);
CU_Kind := Unit_Kind (CU);
if Is_Nil (CU) then
Error ("file " & Gnatstub.Options.File_Name.all &
" does not contain a unit to process");
return;
end if;
if Generate_Subunits then
Generate_Separate_Stubs (CU);
else
if not (CU_Kind in A_Subprogram_Declaration or else
CU_Kind in A_Generic_Unit_Declaration or else
CU_Kind = A_Package)
then
Error ("Compilation unit " & To_String (Unit_Full_Name (CU)) &
" cannot have a body" &
(if not Quiet_Mode then
" Unit Kind: " & (CU_Kind'Img)
else
""));
return;
elsif not Asis.Extensions.CU_Requires_Body (CU) then
Error ("Compilation unit " & To_String (Unit_Full_Name (CU)) &
" does not require a body");
return;
else
-- and here we have to do the job:
begin
Create (Body_File, Out_File, Body_Name.all, Body_Form.all);
exception
when Ada.IO_Exceptions.Name_Error =>
Put_Line (Standard_Error, "gnatstub: cannot create "
& "check the file name");
raise Fatal_Error;
end;
Create_Body_Structure (
Element => Unit_Declaration (CU),
Control => My_Control,
State => My_State);
-- first, trying to create the header, if needed:
Generate_CU_Header (Header_Created);
if Header_Created then
Put_Line (Body_File, "pragma Ada_2012;");
Generate_Body_Structure;
Close (Body_File);
if not Quiet_Mode then
Info ("body is created for " &
Gnatstub.Options.File_Name.all);
end if;
else
Error ("failed to write the comment header for the body for " &
Gnatstub.Options.File_Name.all);
end if;
end if;
end if;
Close (My_Context);
Dissociate (My_Context);
Asis.Implementation.Finalize;
exception
when Ex : Asis.Exceptions.ASIS_Inappropriate_Context
| Asis.Exceptions.ASIS_Inappropriate_Container
| Asis.Exceptions.ASIS_Inappropriate_Compilation_Unit
| Asis.Exceptions.ASIS_Inappropriate_Element
| Asis.Exceptions.ASIS_Inappropriate_Line
| Asis.Exceptions.ASIS_Inappropriate_Line_Number
| Asis.Exceptions.ASIS_Failed
=>
New_Line (File => Standard_Error);
if Asis.Implementation.Status = Asis.Errors.Use_Error and then
Reuse_Tree and then Tree_Exists
then
Error ("the tree you try to reuse may be obsolete");
Error_No_Tool_Name
("either recreate the tree or do not use -r option");
else
Report_Unhandled_ASIS_Exception (Ex);
end if;
Emergency_Clean_Up;
raise Fatal_Error;
when others =>
Emergency_Clean_Up;
raise;
end Create_Sample;
---------------------
-- Prepare_Context --
---------------------
procedure Prepare_Context is separate;
-- We need different bodies for GNSA and non-GNSA versions
------------------------
-- Emergency_Clean_Up --
------------------------
procedure Emergency_Clean_Up is
begin
if Is_Open (My_Context) then
Close (My_Context);
end if;
Dissociate (My_Context);
Asis.Implementation.Finalize;
if Is_Open (Body_File) then
-- No need to keep a broken body in case of an emergency clean up
Delete (Body_File);
end if;
if Is_Open (Spec_File) then
-- No need to keep a broken body in case of an emergency clean up
Close (Spec_File);
end if;
end Emergency_Clean_Up;
-------------------------
-- Free_Body_Structure --
-------------------------
procedure Free_Body_Structure is
procedure Free_Node (Node : in out Link);
procedure Free_List (L : Link);
procedure Free_Node (Node : in out Link) is
begin
Free (Node.Spec_Name);
Free_List (Node.Down);
Free (Node);
end Free_Node;
procedure Free_List (L : Link) is
Current, Next : Link;
begin
Current := L;
while Current /= null loop
Next := Current.Next;
Free_Node (Current);
Current := Next;
end loop;
end Free_List;
begin
Free_List (Body_Structure_Access.Down);
Free (Body_Structure_Access.Spec_Name);
end Free_Body_Structure;
-----------------------------
-- Generate_Body_Structure --
-----------------------------
procedure Generate_Body_Structure is
procedure Print_Node (Node : Link);
-- outputs a Node into Body_File
procedure Print_Node_List (List : Link);
-- outputs a list of nodes into Body_File. These two procedures -
-- Print_Node and Print_Node_List call each other recursively
procedure Print_Node (Node : Link) is
Arg_Kind : constant Flat_Element_Kinds :=
Flat_Element_Kind (Node.Spec);
begin
if Node /= Body_Structure'Access and then Bodyless_Package (Node) then
return;
end if;
if Level /= 0
and then
Arg_Kind not in An_Incomplete_Type_Declaration ..
A_Tagged_Incomplete_Type_Declaration
then
Generate_Unit_Header (Node);
end if;
case Arg_Kind is
when A_Package_Declaration |
A_Generic_Package_Declaration =>
Generate_Package_Body (Node);
when A_Function_Declaration |
A_Function_Body_Stub |
A_Generic_Function_Declaration =>
Generate_Function_Body (Node);
when A_Procedure_Declaration |
A_Procedure_Body_Stub |
A_Generic_Procedure_Declaration =>
Generate_Procedure_Body (Node);
when An_Entry_Declaration =>
Generate_Entry_Body (Node);
when A_Single_Protected_Declaration |
A_Protected_Type_Declaration =>
Generate_Protected_Body (Node);
when A_Single_Task_Declaration |
A_Task_Type_Declaration =>
Generate_Task_Body (Node);
when An_Incomplete_Type_Declaration |
A_Tagged_Incomplete_Type_Declaration =>
Generate_Full_Type_Declaration (Node);
when others =>
Put (Standard_Error, "gnatstub: unexpected element ");
Put_Line (Standard_Error, "in the body structure");
raise Fatal_Error;
end case;
if Node.Down /= null then
Print_Node_List (Node.Down);
end if;
end Print_Node;
procedure Print_Node_List (List : Link) is
Next_Node : Link;
List_Start : Link := List;
begin
Level := Level + 1;
-- here we have to go to the beginning of the list:
while List_Start.Prev /= null loop
List_Start := List_Start.Prev;
end loop;
Next_Node := List_Start;
loop
Print_Node (Next_Node);
if Next_Node.Next /= null then
Next_Node := Next_Node.Next;
else
exit;
end if;
end loop;
-- finalizing the enclosing construct:
Level := Level - 1;
Next_Node := Next_Node.Up;
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "end " & Next_Node.Spec_Name.all & ";");
if List.Up /= Body_Structure'Access then
New_Line (Body_File);
end if;
end Print_Node_List;
begin
Print_Node (Body_Structure_Access);
end Generate_Body_Structure;
------------------------
-- Generate_CU_Header --
------------------------
procedure Generate_CU_Header
(Success : out Boolean;
For_Subunit : Boolean := False;
Subunit_Name : Asis.Element := Nil_Element)
is
-- This local declarations are used to generate a sample comment
-- header
Unit_Name_Len : Positive :=
(if For_Subunit then
Body_Structure.Spec_Name'Length + 1
else
Body_Structure.Spec_Name'Length);
Left_Unit_Name_Spaces : Positive;
Right_Unit_Name_Spaces : Positive;
Left_Body_Spaces : Positive;
Right_Body_Spaces : Positive;
Name_With_Spaces : Boolean := True;
Body_String : constant Program_Text := "B o d y";
Body_String_Len : constant Positive := Body_String'Length;
-- These local declarations are used to copy a comment header from the
-- argument spec
Header_File : File_Type;
String_Buf : Program_Text (1 .. Hostparm.Max_Line_Length);
Header_Line_Len : Natural;
Idx : Natural;
Line_Count : Natural := 0;
Spec_String_Start : Natural;
Subunit_Name_On_Separate_Line : Boolean := False;
Subunit_Name_Str : constant Program_Text :=
(if For_Subunit then Defining_Name_Image (Subunit_Name) else "");
Subunit_Name_Len : Natural := Subunit_Name_Str'Length;
Left_Subunit_Name_Spaces : Positive;
Right_Subunit_Name_Spaces : Positive;
Total_Subunit_Name_Len : Positive;
procedure Strip_Trailing_Spaces;
-- Strips trailing spaces from the string stored in String_Buf
-- (assuming that Header_Line_Len points to the last character of this
-- string) and resets Header_Line_Len accordingly.
procedure Strip_Trailing_Spaces is
begin
for J in reverse 1 .. Header_Line_Len loop
if not Is_White_Space (String_Buf (J)) then
Header_Line_Len := J;
exit;
end if;
end loop;
end Strip_Trailing_Spaces;
begin
Success := False;
case Header is
when No_Header =>
null;
when Stand_Header =>
-- first, checking if we can fit the maximum line length:
if Unit_Name_Len + 6 > Max_Body_Line_Length
or else
(For_Subunit
and then
Subunit_Name_Len + 6 > Max_Body_Line_Length)
then
Put (Standard_Error, "gnatstub: unit name is too ");
Put_Line (Standard_Error, "long to generate a comment header");
Put (Standard_Error, "gnatstub: try to increase ");
Put_Line (Standard_Error, "the maximum body line length");
raise Fatal_Error;
end if;
if (2 * Unit_Name_Len - 1) + 6 > Max_Body_Line_Length
or else
(For_Subunit
and then
(2 * Subunit_Name_Len - 1) + 6 > Max_Body_Line_Length)
then
Name_With_Spaces := False;
else
Unit_Name_Len := 2 * Unit_Name_Len - 1;
if For_Subunit then
Subunit_Name_Len := 2 * Subunit_Name_Len - 1;
end if;
end if;
if For_Subunit then
Total_Subunit_Name_Len := Unit_Name_Len + Subunit_Name_Len;
if Name_With_Spaces then
Total_Subunit_Name_Len := Total_Subunit_Name_Len + 1;
end if;
if Total_Subunit_Name_Len + 6 > Max_Body_Line_Length then
Subunit_Name_On_Separate_Line := True;
Left_Subunit_Name_Spaces :=
(Max_Body_Line_Length - 4 - Subunit_Name_Len) / 2;
Right_Subunit_Name_Spaces :=
Max_Body_Line_Length - Subunit_Name_Len -
4 - Left_Subunit_Name_Spaces;
else
Unit_Name_Len := Total_Subunit_Name_Len;
end if;
end if;
Left_Unit_Name_Spaces :=
(Max_Body_Line_Length - 4 - Unit_Name_Len) / 2;
Right_Unit_Name_Spaces :=
Max_Body_Line_Length - Unit_Name_Len -
4 - Left_Unit_Name_Spaces;
Left_Body_Spaces :=
(Max_Body_Line_Length - 4 - Body_String_Len) / 2;
Right_Body_Spaces :=
Max_Body_Line_Length - Body_String_Len - 4 - Left_Body_Spaces;
Put_Line (Body_File, Max_Body_Line_Length * '-');
Put_Line
(Body_File, "--" & (Max_Body_Line_Length - 4) * ' ' & "--");
Put (Body_File, "--" & Left_Unit_Name_Spaces * ' ');
if Name_With_Spaces then
Put (Body_File, To_Upper (Body_Structure.Spec_Name
(Body_Structure.Spec_Name'First)));
for I in Body_Structure.Spec_Name'First + 1 ..
Body_Structure.Spec_Name'Last
loop
Put
(Body_File, ' ' & To_Upper (Body_Structure.Spec_Name (I)));
end loop;
if For_Subunit and then not Subunit_Name_On_Separate_Line then
Put (Body_File, " .");
for I in Subunit_Name_Str'Range loop
Put (Body_File,
' ' & To_Upper (Subunit_Name_Str (I)));
end loop;
end if;
else
Put (Body_File, To_Upper (Body_Structure.Spec_Name.all));
if For_Subunit and then not Subunit_Name_On_Separate_Line then
Put (Body_File, '.' & To_Upper (Subunit_Name_Str));
end if;
end if;
Put_Line (Body_File, Right_Unit_Name_Spaces * ' ' & "--");
if For_Subunit and then Subunit_Name_On_Separate_Line then
Put (Body_File, "--" & Left_Subunit_Name_Spaces * ' ');
if Name_With_Spaces then
Put (Body_File,
To_Upper (Subunit_Name_Str (Subunit_Name_Str'First)));
for I in Subunit_Name_Str'First + 1 ..
Subunit_Name_Str'Last
loop
Put (Body_File, ' ' & To_Upper (Subunit_Name_Str (I)));
end loop;
else
Put (Body_File, To_Upper (Subunit_Name_Str));
end if;
Put_Line (Body_File, Right_Subunit_Name_Spaces * ' ' & "--");
end if;
Put_Line
(Body_File, "--" & (Max_Body_Line_Length - 4) * ' ' & "--");
Put_Line (Body_File,
"--" & Left_Body_Spaces * ' ' &
Body_String & Right_Body_Spaces * ' ' & "--");
Put_Line
(Body_File, "--" & (Max_Body_Line_Length - 4) * ' ' & "--");
Put_Line
(Body_File, Max_Body_Line_Length * '-');
New_Line (Body_File);
when From_Spec =>
Open (Header_File, In_File, File_Name.all, "");
while not End_Of_File (Header_File) loop
Get_Line (Header_File, String_Buf, Header_Line_Len);
Strip_Trailing_Spaces;
Line_Count := Line_Count + 1;
exit when String_Buf (1 .. 2) /= "--";
if Header_Line_Len > Max_Body_Line_Length then
Error ("line" & Line_Count'Img &
" in spec's comment header is too long");
Close (Header_File);
raise Fatal_Error;
end if;
Spec_String_Start :=
Index (Source => String_Buf (1 .. Header_Line_Len),
Pattern => "S p e c");
if Spec_String_Start /= 0 then
Overwrite (Source => String_Buf (1 .. Header_Line_Len),
Position => Spec_String_Start,
New_Item => "B o d y");
end if;
Put_Line (Body_File, String_Buf (1 .. Header_Line_Len));
end loop;
Close (Header_File);
when From_File =>
Open (Header_File, In_File, Header_File_Name.all, "");
while not End_Of_File (Header_File) loop
Get_Line (Header_File, String_Buf, Header_Line_Len);
Strip_Trailing_Spaces;
Line_Count := Line_Count + 1;
Idx := ASIS_Index_Non_Blank (String_Buf);
if Idx /= 0
and then
(Header_Line_Len - Idx = 0
or else
String_Buf (Idx .. Idx + 1) /= "--")
then
Error ("line" & Line_Count'Img &
" in comment header file is not a comment line");
Close (Header_File);
raise Fatal_Error;
elsif Header_Line_Len > Max_Body_Line_Length then
Error ("line" & Line_Count'Img &
" in comment header file is too long");
Close (Header_File);
raise Fatal_Error;
end if;
Put_Line (Body_File, String_Buf (1 .. Header_Line_Len));
end loop;
Close (Header_File);
end case;
Success := True;
exception
when others =>
Emergency_Clean_Up;
raise;
end Generate_CU_Header;
-------------------------
-- Generate_Entry_Body --
-------------------------
procedure Generate_Entry_Body (Node : Link) is
Change_Line : Boolean;
begin
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put (Body_File, "entry " & Node.Spec_Name.all);
Generate_Profile (Node, Change_Line);
if Change_Line then
New_Line (Body_File);
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
else
Put (Body_File, " ");
end if;
Put (Body_File, "when Standard.True");
-- now we have to decide how to output "is"
if Change_Line or else
Natural (Col (Body_File)) + 3 > Max_Body_Line_Length
then
New_Line (Body_File);
Set_Col (Body_File, Positive_Count (1 + (Level) * Indent_Level));
else
Put (Body_File, ' ');
end if;
Put_Line (Body_File, "is");
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "begin");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
Put_Line (Body_File, "-- Generated stub: replace with real body!");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
Put_Line (Body_File,
"pragma Compile_Time_Warning (Standard.True, """ &
To_Wide_String (To_String (Node.Spec_Name.all)) &
" unimplemented"");");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
if No_Exception_In_Stubs then
Put_Line (Body_File, "null;");
else
Put (Body_File, "raise Program_Error");
if Opt.Ada_Version >= Ada_2005 then
Put (Body_File,
" with ""Unimplemented entry " &
To_Wide_String (To_String (Node.Spec_Name.all)) & '"');
end if;
Put_Line (Body_File, ";");
end if;
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "end " & Node.Spec_Name.all & ";");
New_Line (Body_File);
end Generate_Entry_Body;
------------------------------------
-- Generate_Full_Type_Declaration --
------------------------------------
procedure Generate_Full_Type_Declaration (Node : Link) is
Discr_Part : constant Asis.Element := Discriminant_Part (Node.Spec);
Is_Tagged : constant Boolean := Flat_Element_Kind (Node.Spec) =
A_Tagged_Incomplete_Type_Declaration;
begin
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put (Body_File, "type " & Node.Spec_Name.all & " ");
if Flat_Element_Kind (Discr_Part) = A_Known_Discriminant_Part then
-- we do not split components of a discriminant part to fit
-- Max_Body_Line_Length constraint (if needed) - it does not make any
-- sense, because a user will for sure change this sample completion
-- for an incomplete type declaration
Put (Body_File, ASIS_Trim (Element_Image (Discr_Part)) & " ");
end if;
Put (Body_File, "is ");
if Is_Tagged then
Put (Body_File, "tagged ");
end if;
Put_Line (Body_File, "null record;");
New_Line (Body_File);
end Generate_Full_Type_Declaration;
----------------------------
-- Generate_Function_Body --
----------------------------
procedure Generate_Function_Body (Node : Link) is
No_Raise_Statement : Boolean := False;
Change_Line : Boolean;
begin
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
if Is_Overriding_Declaration (Node.Spec) then
Put (Body_File, "overriding ");
elsif Is_Not_Overriding_Declaration (Node.Spec) then
Put (Body_File, "not overriding ");
end if;
Put (Body_File, "function " & Node.Spec_Name.all);
Generate_Profile (Node, Change_Line);
if Change_Line then
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "is");
else
Put_Line (Body_File, " is");
end if;
if No_Exception_In_Stubs
and then
Allows_Var_Declaration (Result_Profile (Node.Spec))
then
No_Raise_Statement := True;
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
Put (Body_File, "Result : ");
Put (Body_File,
ASIS_Trim (Element_Image (Result_Profile (Node.Spec))));
Put_Line (Body_File, ";");
end if;
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "begin");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
Put_Line (Body_File, "-- Generated stub: replace with real body!");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
Put_Line (Body_File,
"pragma Compile_Time_Warning (Standard.True, """ &
Image_For_String
(To_Wide_String (To_String (Node.Spec_Name.all))) &
" unimplemented"");");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
if No_Raise_Statement then
Put_Line (Body_File, "return Result;");
else
-- We now use a return of a raise expression, to avoid a kludgey
-- recursive call to itself. This is Ada 2012, so the checks for
-- >= Ada_2005 are not actually necessary.
Put (Body_File, "return raise Program_Error");
if Opt.Ada_Version >= Ada_2005 then
Put (Body_File,
" with ""Unimplemented function " &
To_Wide_String (To_String
(Image_For_String (Node.Spec_Name.all))) & '"');
end if;
Put_Line (Body_File, ";");
end if;
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "end " & Node.Spec_Name.all & ";");
New_Line (Body_File);
end Generate_Function_Body;
---------------------------
-- Generate_Package_Body --
---------------------------
procedure Generate_Package_Body (Node : Link) is
begin
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "package body " & Node.Spec_Name.all & " is");
New_Line (Body_File);
if Node = Body_Structure'Access and then Node.Down = null then
-- this is a special case: an argument unit is a library [generic]
-- package which requires a body but which does not contain any
-- local declaration which itself requires a completion:
Put_Line (Body_File, "end " & Node.Spec_Name.all & ";");
end if;
end Generate_Package_Body;
-----------------------------
-- Generate_Procedure_Body --
-----------------------------
procedure Generate_Procedure_Body (Node : Link) is
Change_Line : Boolean;
begin
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
if Is_Overriding_Declaration (Node.Spec) then
Put (Body_File, "overriding ");
elsif Is_Not_Overriding_Declaration (Node.Spec) then
Put (Body_File, "not overriding ");
end if;
Put (Body_File, "procedure " & Node.Spec_Name.all);
Generate_Profile (Node, Change_Line);
if Change_Line then
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "is");
else
Put_Line (Body_File, " is");
end if;
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "begin");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
Put_Line (Body_File, "-- Generated stub: replace with real body!");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
Put_Line (Body_File,
"pragma Compile_Time_Warning (Standard.True, """ &
To_Wide_String (To_String (Node.Spec_Name.all)) &
" unimplemented"");");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
if No_Exception_In_Stubs then
Put_Line (Body_File, "null;");
else
Put (Body_File, "raise Program_Error");
if Opt.Ada_Version >= Ada_2005 then
Put (Body_File,
" with ""Unimplemented procedure " &
To_Wide_String (To_String (Node.Spec_Name.all)) & '"');
end if;
Put_Line (Body_File, ";");
end if;
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "end " & Node.Spec_Name.all & ";");
New_Line (Body_File);
end Generate_Procedure_Body;
----------------------
-- Generate_Profile --
----------------------
procedure Generate_Profile (Node : Link; Change_Line : out Boolean) is
Arg_Kind : constant Flat_Element_Kinds := Flat_Element_Kind (Node.Spec);
Parameters : constant Asis.Element_List := Parameter_Profile (Node.Spec);
Spec_Span : Span;
Family_Def : Asis.Element;
Construct_Len : Positive;
begin
Change_Line := False;
-- first, generating an entry_index_specification for an entry_body,
-- if needed:
if Arg_Kind = An_Entry_Declaration then
Family_Def := Entry_Family_Definition (Node.Spec);
if not Is_Nil (Family_Def) then
Spec_Span := Element_Span (Family_Def);
-- checking how entry_index_specification should be printed
-- "+ 12" below means " (for I in )"
if (Spec_Span.First_Line /= Spec_Span.Last_Line) or else
(Character_Position (Col (Body_File)) + 12 +
Spec_Span.Last_Column - Spec_Span.First_Column + 1) >
Max_Body_Line_Length
then
Change_Line := True;
end if;
if Change_Line then
New_Line (Body_File);
if Indent_Level > 0 then
Set_Col (
Body_File,
Positive_Count (1 + (Level + 1) * Indent_Level) - 2);
end if;
end if;
Put (Body_File, " (for I in ");
Put (Body_File, ASIS_Trim (Element_Image (Family_Def)));
Put (Body_File, ")");
end if;
end if;
-- Now we have to decide, how to print parameter [and result] profile
if Change_Line = False then
if Arg_Kind = A_Generic_Procedure_Declaration or else
Arg_Kind = A_Generic_Function_Declaration
then
-- Here we cannot use Span-based approach, so we use the
-- rough parameter-number-based estimation:
if Parameters'Length >= 2 then
Change_Line := True;
end if;
else
Spec_Span := Element_Span (Node.Spec);
if Spec_Span.First_Line /= Spec_Span.Last_Line then
-- First, rough check: if an argument spec occupies more than
-- one line, we print parameters specs on separate lines:
Change_Line := True;
else
-- We check if a construct plus additions needed for the body
-- plus indentation level in the body fits maximum line length
-- defined for the body. We assume that the argument spec is
-- reasonably formatted
Construct_Len := Spec_Span.Last_Column - Spec_Span.First_Column
+ 1;
if Arg_Kind = An_Entry_Declaration and then
not Is_Nil (Family_Def)
then
Construct_Len := Construct_Len + 9;
-- "+ 9" stands for "for I in "
else
Construct_Len := Construct_Len + 3;
-- "+ 3" stands for " is"
end if;
if Level * Indent_Level + Construct_Len >
Max_Body_Line_Length
then
Change_Line := True;
end if;
end if;
end if;
end if;
if not Is_Nil (Parameters) then
if Change_Line then
New_Line (Body_File);
if Indent_Level > 0 then
Set_Col (Body_File,
Positive_Count (1 + (Level + 1) * Indent_Level - 1));
end if;
Put (Body_File, "(");
else
Put (Body_File, " (");
end if;
for I in Parameters'Range loop
Put (Body_File, ASIS_Trim (Element_Image (Parameters (I))));
if I /= Parameters'Last then
if Change_Line then
Put_Line (Body_File, ";");
Set_Col (Body_File,
Positive_Count (1 + (Level + 1) * Indent_Level));
else
Put (Body_File, "; ");
end if;
end if;
end loop;
Put (Body_File, ")");
end if;
if Arg_Kind = A_Function_Declaration or else
Arg_Kind = A_Generic_Function_Declaration
then
-- we have to output " return <type_mark>:
if Change_Line then
New_Line (Body_File);
Set_Col (Body_File,
Positive_Count (1 + (Level + 1) * Indent_Level));
Put (Body_File, "return ");
else
Put (Body_File, " return ");
end if;
if Definition_Kind (Result_Profile (Node.Spec)) /=
An_Access_Definition
and then
Is_Not_Null_Return (Node.Spec)
then
Put (Body_File, "not null ");
end if;
Put (Body_File,
ASIS_Trim (Element_Image (Result_Profile (Node.Spec))));
end if;
if Col (Body_File) + 3 >
Ada.Wide_Text_IO.Count (Max_Body_Line_Length)
then
Change_Line := True;
end if;
end Generate_Profile;
-----------------------------
-- Generate_Protected_Body --
-----------------------------
procedure Generate_Protected_Body (Node : Link) is
begin
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "protected body " & Node.Spec_Name.all & " is");
New_Line (Body_File);
if Node.Down = null then
-- protected definition with no protected operation is somewhat
-- strange, but legal case
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "end " & Node.Spec_Name.all & ";");
New_Line (Body_File);
end if;
end Generate_Protected_Body;
-----------------------------
-- Generate_Separate_Stubs --
-----------------------------
procedure Generate_Separate_Stubs (Body_Unit : Asis.Compilation_Unit) is
CU_Kind : constant Unit_Kinds := Unit_Kind (Body_Unit);
Unit : Asis.Element;
function Get_Subunit_Name (Def_Name : Asis.Element) return String;
-- Creates the name for the file where the subunit should be located
-- using the template created from the argument body name.
function Get_Subunit_Name (Def_Name : Asis.Element) return String is
Def_Name_Image : String :=
(To_String (Defining_Name_Image (Def_Name)));
begin
case Subunit_Name_Casing is
when Lowercase =>
Def_Name_Image := To_Lower (Def_Name_Image);
when Uppercase =>
Def_Name_Image := To_Upper (Def_Name_Image);
when Mixedcase =>
Def_Name_Image := Capitalize (Def_Name_Image);
end case;
return
Subunit_Name_Temlate (First_Idx .. Insert_Idx) &
Def_Name_Image &
Subunit_Name_Temlate (Insert_Idx + 1 .. Last_Idx);
end Get_Subunit_Name;
begin
if CU_Kind not in A_Procedure_Body |
A_Function_Body |
A_Package_Body |
A_Procedure_Body_Subunit |
A_Function_Body_Subunit |
A_Package_Body_Subunit |
A_Task_Body_Subunit |
A_Protected_Body_Subunit
then
Error ("argument unit cannot have subunits (" &
Capitalize (CU_Kind'Img) & ")");
return;
end if;
Unit := Unit_Declaration (Body_Unit);
declare
Dcls : constant Asis.Element_List :=
(if Declaration_Kind (Unit) = A_Protected_Body_Declaration then
Protected_Operation_Items (Unit)
else
Body_Declarative_Items (Unit));
Body_El : Asis.Element;
Stub_Dcl : Asis.Element;
Def_Name : Asis.Element;
Success : Boolean;
My_Control : Traverse_Control := Continue;
My_State : Body_State;
begin
for J in Dcls'Range loop
if Declaration_Kind (Dcls (J)) in A_Body_Stub then
Body_El := Corresponding_Subunit (Dcls (J));
Def_Name := First_Name (Dcls (J));
if not Is_Nil (Body_El) then
goto Continue;
else
Body_Name := new String'(Get_Subunit_Name (Def_Name));
end if;
if GNAT.OS_Lib.Is_Regular_File (Body_Name.all) then
if not Quiet_Mode then
Put_Line
(Current_Error,
"separate body is not created for stub for " &
Defining_Name_Image (Def_Name));
Put_Line
(Current_Error,
" file " & To_Wide_String (Body_Name.all) &
"already exists");
end if;
Free (Body_Name);
goto Continue;
end if;
begin
Create
(Body_File, Out_File, Body_Name.all, Body_Form.all);
exception
when others =>
Error ("cannot create file " & Body_Name.all &
" for subunit");
goto Continue;
end;
Stub_Dcl := Corresponding_Declaration (Dcls (J));
if Is_Nil (Stub_Dcl) then
-- Body stub acts as a spec
Stub_Dcl := Dcls (J);
end if;
Body_Structure.Spec_Name :=
new Program_Text'(Unit_Full_Name (Body_Unit));
-- We need this because Generate_CU_Header takes the
-- compilation unit name from Body_Structure
Generate_CU_Header
(Success,
For_Subunit => True,
Subunit_Name => Def_Name);
Put_Line (Body_File, "pragma Ada_2012;");
Put_Line
(Body_File,
"separate (" & Body_Structure.Spec_Name.all & ')');
Free (Body_Structure.Spec_Name);
My_State := Initial_State;
Create_Body_Structure (
Element => Stub_Dcl,
Control => My_Control,
State => My_State);
Generate_Body_Structure;
Free_Body_Structure;
Close (Body_File);
Free (Body_Name);
if not Quiet_Mode then
Put_Line
(Current_Error,
"separate body is created for stub for " &
Defining_Name_Image (Def_Name));
end if;
end if;
<<Continue>>
end loop;
end;
end Generate_Separate_Stubs;
------------------------
-- Generate_Task_Body --
------------------------
procedure Generate_Task_Body (Node : Link) is
begin
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "task body " & Node.Spec_Name.all & " is");
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "begin");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
Put_Line (Body_File, "-- Generated stub: replace with real body!");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
Put_Line (Body_File,
"pragma Compile_Time_Warning (Standard.True, """ &
To_Wide_String (To_String (Node.Spec_Name.all)) &
" unimplemented"");");
Set_Col (Body_File, Positive_Count (1 + (Level + 1) * Indent_Level));
if No_Exception_In_Stubs then
Put_Line (Body_File, "null;");
else
Put (Body_File, "raise Program_Error");
if Opt.Ada_Version >= Ada_2005 then
Put (Body_File,
" with ""Unimplemented task " &
To_Wide_String (To_String (Node.Spec_Name.all)) & '"');
end if;
Put_Line (Body_File, ";");
end if;
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, "end " & Node.Spec_Name.all & ";");
New_Line (Body_File);
end Generate_Task_Body;
--------------------------
-- Generate_Unit_Header --
--------------------------
procedure Generate_Unit_Header (Node : Link) is
Header_Length : constant Natural := Node.Spec_Name'Length + 6;
begin
if not No_Local_Comment_Headers then
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, Header_Length * '-');
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put (Body_File, "-- ");
Put (Body_File, Node.Spec_Name.all);
Put_Line (Body_File, " --");
Set_Col (Body_File, Positive_Count (1 + Level * Indent_Level));
Put_Line (Body_File, Header_Length * '-');
New_Line (Body_File);
end if;
end Generate_Unit_Header;
-------------------
-- Get_Tree_Name --
-------------------
function Get_Tree_Name return String is
Dot_Index : Natural := Short_File_Name'Last;
begin
for J in reverse Short_File_Name'Range loop
if Short_File_Name (J) = '.' then
Dot_Index := J - 1;
exit;
end if;
end loop;
return Short_File_Name (Short_File_Name'First .. Dot_Index) & ".adt";
end Get_Tree_Name;
-----------
-- Go_Up --
-----------
procedure Go_Up
(Element : Asis.Element;
Control : in out Traverse_Control;
State : in out Body_State)
is
pragma Unreferenced (Control);
Arg_Kind : constant Flat_Element_Kinds := Flat_Element_Kind (Element);
begin
if not (Arg_Kind = A_Package_Declaration or else
Arg_Kind = A_Generic_Package_Declaration or else
Arg_Kind = A_Single_Protected_Declaration or else
Arg_Kind = A_Protected_Type_Declaration)
then
return;
end if;
if State.New_List_Needed then
-- no local body is needed for a given construct
State.New_List_Needed := False;
else
-- we have to reset the current list:
if State.Current_List /= null then
State.Current_List := State.Current_List.Up;
while State.Current_List.Prev /= null loop
State.Current_List := State.Current_List.Prev;
end loop;
end if;
end if;
end Go_Up;
-----------------------
-- Image_For_String --
-----------------------
function Image_For_String (S : Program_Text) return Program_Text is
begin
if S (S'First) = '"' and then S (S'Last) = '"' then
return '"' & S & '"';
else
return S;
end if;
end Image_For_String;
----------------
-- Initialize --
----------------
procedure Initialize is
begin
ASIS_UL.Environment.Scan_Parameters (Gnatstub_Prj);
Gnatstub.Projects.Set_Tree_Creator (Gnatstub_Prj);
Check_Parameters;
Prepare_Context;
Initialized := True;
exception
when others =>
Initialized := False;
raise;
end Initialize;
----------
-- Name --
----------
function Name (El : Asis.Element) return Program_Text is
Def_Name : constant Asis.Element := Names (El) (1);
begin
return Defining_Name_Image (Def_Name);
end Name;
--------------------------
-- Print_Gnatstub_Usage --
--------------------------
procedure Print_Gnatstub_Usage is
begin
Ada.Text_IO.Set_Error (Ada.Text_IO.Standard_Output);
Brief_Help;
New_Line;
New_Line;
Put_Line ("Report bugs to report@adacore.com");
end Print_Gnatstub_Usage;
-------------------
-- Requires_Body --
-------------------
function Requires_Body (El : Element) return Boolean is
Arg_Kind : constant Flat_Element_Kinds := Flat_Element_Kind (El);
Encl_El : Asis.Element;
Encl_El_Kind : Flat_Element_Kinds;
Result : Boolean := False;
begin
case Arg_Kind is
when An_Incomplete_Type_Declaration |
A_Tagged_Incomplete_Type_Declaration =>
Result := Is_Nil (Corresponding_Type_Declaration (El));
when A_Task_Type_Declaration |
A_Protected_Type_Declaration |
A_Single_Task_Declaration |
A_Single_Protected_Declaration |
A_Package_Declaration |
A_Generic_Procedure_Declaration |
A_Generic_Function_Declaration |
A_Generic_Package_Declaration =>
-- there is no harm to generate a local body sample for a local
-- package or generic package
Result := True;
when A_Procedure_Declaration |
A_Function_Declaration =>
-- there are two cases when a subprogram does not require
-- completion: when it is already completed by renaming-as-body
-- in a package spec or when it is abstract
if Trait_Kind (El) /= An_Abstract_Trait then
-- Result := Is_Nil (Corresponding_Body (El)); ???
-- ??? the statement below implements the temporary solution
-- ??? for subprograms completed by pragmas Import.
-- ??? it should be revised when Asis.Extensions.Is_Completed
-- ??? gets in a proper shape.
Result := not (not Is_Nil (Corresponding_Body (El))
or else
Asis.Extensions.Is_Completed (El));
end if;
when An_Entry_Declaration =>
Encl_El := Enclosing_Element (El);
Encl_El_Kind := Flat_Element_Kind (Encl_El);
Result := Encl_El_Kind = A_Protected_Definition;
when others =>
null;
end case;
return Result;
end Requires_Body;
end Gnatstub.Sampler;
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