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350 | --
-- Copyright (C) 2014-2022, AdaCore
-- SPDX-License-Identifier: Apache-2.0
--
with Ada.Containers.Vectors;
with Ada.Strings.Wide_Wide_Unbounded;
with Ada.Wide_Wide_Characters.Handling;
with Libadalang.Unit_Files;
package body Libadalang.Auto_Provider is
----------------
-- Find_Files --
----------------
function Find_Files
(Filter : not null access function (Name : String) return Boolean;
Directories : GNATCOLL.VFS.File_Array)
return GNATCOLL.VFS.File_Array_Access;
-- Common implementation for the two public ``Find_Files`` functions:
-- return the list of files in ``Directories`` for which ``Filter`` (when
-- called on the file base name) returns True.
procedure Add_Entry
(Provider : in out Auto_Unit_Provider;
Filename : Unbounded_String;
CU : Compilation_Unit;
PLE_Root_Index : Positive);
-- Add a CU -> Filename entry to Provider.Mapping
---------------
-- Add_Entry --
---------------
procedure Add_Entry
(Provider : in out Auto_Unit_Provider;
Filename : Unbounded_String;
CU : Compilation_Unit;
PLE_Root_Index : Positive)
is
use Ada.Strings.Wide_Wide_Unbounded;
FQN : constant Unbounded_Text_Type_Array :=
CU.P_Syntactic_Fully_Qualified_Name;
Kind : constant Analysis_Unit_Kind := CU.P_Unit_Kind;
Name : Unbounded_Wide_Wide_String;
begin
for I in FQN'Range loop
if I > FQN'First then
Append (Name, '.');
end if;
Append (Name, To_Text (FQN (I)));
end loop;
declare
Key : constant Symbol_Type :=
As_Key (To_Wide_Wide_String (Name), Kind, Provider);
Value : constant Filename_And_PLE_Root :=
(Filename, PLE_Root_Index);
Dummy_Cur : Unit_Maps.Cursor;
Inserted : Boolean;
begin
Provider.Mapping.Insert (Key, Value, Dummy_Cur, Inserted);
-- TODO??? Somehow report duplicate entries
pragma Unreferenced (Inserted);
end;
end Add_Entry;
----------------
-- Find_Files --
----------------
function Find_Files
(Filter : not null access function (Name : String) return Boolean;
Directories : GNATCOLL.VFS.File_Array)
return GNATCOLL.VFS.File_Array_Access
is
package File_Vectors is new Ada.Containers.Vectors
(Positive, Virtual_File);
use File_Vectors;
Result : Vector;
begin
for D of Directories loop
declare
Files : File_Array_Access := Read_Dir_Recursive
(D, Filter => Files_Only);
begin
for F of Files.all loop
if Filter.all (+F.Base_Name) then
Result.Append (F);
end if;
end loop;
Unchecked_Free (Files);
end;
end loop;
return R : constant File_Array_Access :=
new File_Array (1 .. Natural (Result.Length))
do
for Cur in Result.Iterate loop
R (To_Index (Cur)) := Element (Cur);
end loop;
end return;
end Find_Files;
----------------
-- Find_Files --
----------------
function Find_Files
(Name_Pattern : GNAT.Regpat.Pattern_Matcher :=
Default_Source_Filename_Pattern;
Directories : GNATCOLL.VFS.File_Array)
return GNATCOLL.VFS.File_Array_Access
is
function Filter (Name : String) return Boolean
is (GNAT.Regpat.Match (Name_Pattern, Name));
begin
return Find_Files (Filter'Access, Directories);
end Find_Files;
-----------------------
-- Find_Files_Regexp --
-----------------------
function Find_Files_Regexp
(Name_Pattern : GNAT.Regexp.Regexp := Default_Source_Filename_Regexp;
Directories : GNATCOLL.VFS.File_Array)
return GNATCOLL.VFS.File_Array_Access
is
function Filter (Name : String) return Boolean
is (GNAT.Regexp.Match (Name, Name_Pattern));
begin
return Find_Files (Filter'Access, Directories);
end Find_Files_Regexp;
-----------------------
-- Get_Unit_Filename --
-----------------------
overriding function Get_Unit_Filename
(Provider : Auto_Unit_Provider;
Name : Text_Type;
Kind : Analysis_Unit_Kind) return String is
begin
-- Get_Unit_Location is supposed to handle all cases, so this should be
-- dead code.
pragma Unreferenced (Provider, Name, Kind);
return (raise Program_Error);
end Get_Unit_Filename;
-----------------------
-- Get_Unit_Location --
-----------------------
overriding procedure Get_Unit_Location
(Provider : Auto_Unit_Provider;
Name : Text_Type;
Kind : Analysis_Unit_Kind;
Filename : in out Unbounded_String;
PLE_Root_Index : in out Natural)
is
use Unit_Maps;
Mapping : Map renames Provider.Mapping;
Cur : constant Cursor :=
Mapping.Find (As_Key (Name, Kind, Provider));
begin
if Has_Element (Cur) then
declare
Value : Filename_And_PLE_Root renames
Mapping.Constant_Reference (Cur);
begin
Filename := Value.Filename;
PLE_Root_Index := Value.PLE_Root_Index;
end;
else
Filename := Null_Unbounded_String;
PLE_Root_Index := 1;
end if;
end Get_Unit_Location;
--------------
-- Get_Unit --
--------------
overriding function Get_Unit
(Provider : Auto_Unit_Provider;
Context : Analysis_Context'Class;
Name : Text_Type;
Kind : Analysis_Unit_Kind;
Charset : String := "";
Reparse : Boolean := False) return Analysis_Unit'Class
is
-- Get_Unit_And_PLE_Root is supposed to handle all cases, so this should
-- be dead code.
pragma Unreferenced (Provider, Context, Name, Kind, Charset, Reparse);
begin
return (raise Program_Error);
end Get_Unit;
---------------------------
-- Get_Unit_And_PLE_Root --
---------------------------
overriding procedure Get_Unit_And_PLE_Root
(Provider : Auto_Unit_Provider;
Context : Analysis_Context'Class;
Name : Text_Type;
Kind : Analysis_Unit_Kind;
Charset : String := "";
Reparse : Boolean := False;
Unit : in out Analysis_Unit'Class;
PLE_Root_Index : in out Natural)
is
Filename : Unbounded_String;
begin
Provider.Get_Unit_Location (Name, Kind, Filename, PLE_Root_Index);
pragma Assert (PLE_Root_Index > 0);
if Length (Filename) > 0 then
Unit :=
Analysis_Unit'Class
(Context.Get_From_File (To_String (Filename), Charset, Reparse));
else
declare
Dummy_File : constant String :=
Libadalang.Unit_Files.File_From_Unit (Name, Kind);
Kind_Name : constant Text_Type :=
(case Kind is
when Unit_Specification => "specification file",
when Unit_Body => "body file");
Error : constant Text_Type :=
"Could not find source file for " & Name & " (" & Kind_Name
& ")";
begin
Unit := Analysis_Unit'Class
(Context.Get_With_Error (Dummy_File, Error, Charset));
end;
end if;
end Get_Unit_And_PLE_Root;
-------------
-- Release --
-------------
overriding procedure Release (Provider : in out Auto_Unit_Provider) is
begin
Provider.Mapping.Clear;
Destroy (Provider.Keys);
end Release;
--------------------------
-- Create_Auto_Provider --
--------------------------
procedure Create_Auto_Provider
(Provider : out Auto_Unit_Provider;
Input_Files : GNATCOLL.VFS.File_Array;
Charset : String := Default_Charset)
is
Context : constant Analysis_Context := Create_Context (Charset);
begin
-- Go through every input file and try to parse them
for Filename_VFS of Input_Files loop
declare
Filename_String : constant String := +Filename_VFS.Full_Name;
Filename_Unb : constant Unbounded_String :=
To_Unbounded_String (Filename_String);
Unit : constant Analysis_Unit :=
Get_From_File (Context, Filename_String, Reparse => True);
R : constant Ada_Node := Root (Unit);
begin
if not Has_Diagnostics (Unit) then
-- If parsing went fine, add the compilation units File
-- contains to our internal mapping.
--
-- TODO??? Somehow report parsing errors.
case Unit_Files.Root_Nodes (R.Kind) is
when Ada_Compilation_Unit =>
Add_Entry
(Provider, Filename_Unb, R.As_Compilation_Unit, 1);
when Ada_Compilation_Unit_List =>
for I in 1 .. R.Children_Count loop
Add_Entry
(Provider,
Filename_Unb,
R.Child (I).As_Compilation_Unit,
I);
end loop;
when Ada_Pragma_Node_List =>
-- This could be a configuration pragma file, or a body
-- that contains just "pragma No_Body;". In any case,
-- there is no entry to register here.
null;
end case;
end if;
end;
end loop;
end Create_Auto_Provider;
--------------------------
-- Create_Auto_Provider --
--------------------------
function Create_Auto_Provider
(Input_Files : GNATCOLL.VFS.File_Array;
Charset : String := Default_Charset) return Auto_Unit_Provider is
begin
return Provider : Auto_Unit_Provider do
Provider.Keys := Create_Symbol_Table;
Create_Auto_Provider (Provider, Input_Files, Charset);
end return;
end Create_Auto_Provider;
------------
-- As_Key --
------------
function As_Key
(Name : Text_Type;
Kind : Analysis_Unit_Kind;
Provider : Auto_Unit_Provider) return Symbol_Type
is
Canon_Name : constant Text_Type :=
Ada.Wide_Wide_Characters.Handling.To_Lower (Name);
Kind_Letter : constant Wide_Wide_Character :=
(case Kind is
when Unit_Specification => 's',
when Unit_Body => 'b');
begin
return Get_Symbol
(Provider.Keys, Find (Provider.Keys, Kind_Letter & ':' & Canon_Name));
end As_Key;
end Libadalang.Auto_Provider;
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