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reorganized h2

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hyung-hwan
2021-08-21 14:31:39 +00:00
parent 161545a648
commit f6e2146485
85 changed files with 12444 additions and 59510 deletions
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AUTOMAKE_OPTIONS = nostdinc
EXTRA_DIST = \
slim_stream.ads storage.ads wide_stream.ads \
slim_stream.adb storage.adb wide_stream.adb \
scheme.adb
#bin_PROGRAMS = h2scm
all-local: h2scm$(EXEEXT)
h2scm$(EXEEXT): @abs_builddir@/@ADA_OBJDIR@ @abs_builddir@/../lib/libh2.so @abs_srcdir@/scheme.adb
gprbuild @abs_builddir@/scheme.gpr
@abs_builddir@/@ADA_OBJDIR@:
mkdir -p @abs_builddir@/@ADA_OBJDIR@
clean-local:
gprclean -P@abs_builddir@/scheme.gpr

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#bin_PROGRAMS = h2scm
all-local: h2scm$(EXEEXT)
h2scm$(EXEEXT): @abs_builddir@/@ADA_OBJDIR@ @abs_builddir@/../lib/libh2.so @abs_srcdir@/scheme.adb
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with H2.Wide;
with H2.Slim;
with H2.Pool;
with Storage;
with Slim_Stream;
with Wide_Stream;
with Ada.Text_IO;
with Ada.Wide_Text_IO;
with Ada.Unchecked_Deallocation;
with Ada.Exceptions;
with H2.OS;
with H2.IO;
use type H2.System_Length;
with Interfaces.C;
procedure scheme is
package Stream renames Wide_Stream;
package Scheme renames H2.Wide.Scheme;
--package Stream renames Slim_Stream;
--package Scheme renames H2.Slim.Scheme;
Pool: aliased Storage.Global_Pool;
SI: Scheme.Interpreter_Record;
I: Scheme.Object_Pointer;
O: Scheme.Object_Pointer;
--String: aliased S.Object_String := "(car '(1 2 3))";
String: aliased constant Scheme.Object_Character_Array := "((lambda (x y) (+ x y)) 9 7)";
String_Stream: Stream.String_Input_Stream_Record (String'Unchecked_Access);
--String_Stream: Stream.String_Input_Stream_Record := (Len => String'Length, Str => String, Pos => 0);
File_Name: aliased Scheme.Object_Character_Array := "test.adb";
--File_Name: aliased constant Scheme.Object_Character_Array := "시험.scm";
--File_Stream: Stream.File_Stream_Record (File_Name'Unchecked_Access);
--File_Stream: Stream.File_Stream_Record := (Name => File_Name'Unchecked_Access);
File_Stream: Stream.File_Stream_Record;
--procedure h2init;
--pragma Import (C, h2init, "h2init");
begin
--h2init;
ada.text_io.put ("Object_Size'Last: ");
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Object_Size'Last));
ada.text_io.put ("Object_Byte'Size: ");
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Object_Byte'Size));
ada.text_io.put ("Object_Word'Size: ");
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Object_Word'Size));
ada.text_io.put ("Object_Pointer'Size: ");
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Object_Pointer'Size));
ada.text_io.put ("Object_Pointer_Bits: ");
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Object_Pointer_Bits));
ada.text_io.put ("Object_Pointer_Bytes: ");
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Object_Pointer_Bytes));
ada.text_io.put ("Object_Header_Bytes: ");
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Object_Header_Bytes));
ada.text_io.put ("Object_Payload_Max_Bytes: ");
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Object_Payload_Max_Bytes));
ada.text_io.put ("Byte_Object_Size_last: ");
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Byte_Object_Size_Last));
ada.text_io.put ("Pointer_Object_Size_last: ");
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Pointer_Object_Size_Last));
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Empty_Object_Record'Size));
ada.text_io.put_line (Scheme.Object_Size'Image(Scheme.Empty_Object_Record'Max_Size_In_Storage_Elements));
declare
package OS is new H2.OS (
H2.Slim.Character,
H2.Wide.Character,
H2.Slim.String,
H2.Wide.String,
H2.Wide.Utf8.To_Unicode_String,
H2.Wide.Utf8.From_Unicode_String);
package File renames OS.File;
F: File.File_Pointer;
FL: File.Flag_Record;
Length: H2.System_Length;
Buffer: H2.System_Byte_Array (50 .. 100);
begin
--OS.File.Set_Flag_Bits (FL, OS.File.FLAG_WRITE);
File.Set_Flag_Bits (FL, File.FLAG_READ);
File.Open (F, H2.Wide.String'("/etc/passwd"), FL);
File.Read (F, Buffer, Length);
File.Close (F);
File.Write (OS.File.Get_Stdout, Buffer(Buffer'First .. Buffer'First + Length - 1), Length);
end;
declare
package IO is new H2.IO (
H2.Slim.Character,
H2.Wide.Character,
H2.Slim.String,
H2.Wide.String,
H2.Wide.Utf8.To_Unicode_String,
H2.Wide.Utf8.From_Unicode_String,
H2.Wide.Utf8.Sequence_Length);
package File renames IO.File;
F, F2: File.File_Record;
FL: File.Flag_Record;
Buffer: H2.Slim.String (1 .. 200);
BufferW: H2.Wide.String (1 .. 27);
IL, OL: H2.System_Length;
Option: File.Option_Record;
begin
--File.Open (F, H2.Slim.String'("/etc/passwd"), FL);
--File.Read (F, Buffer, Length);
--Ada.Text_IO.PUt_Line (Standard.String(Buffer(Buffer'First .. Buffer'First + Length - 1)));
--File.Read (F, Buffer, Length);
--Ada.Text_IO.PUt (Standard.String(Buffer(Buffer'First .. Buffer'First + Length - 1)));
--File.Close (F);
ada.text_io.put_line ("------------------");
--Stdout.Get_Line (..
--Stdout.Print ("-----------------");
--Stdout.Print_Line ("-------------------");
File.Set_Flag_Bits (FL, File.FLAG_READ);
File.Set_Flag_Bits (FL, File.FLAG_NONBLOCK);
File.Open (F, H2.Slim.String'("/tmp/xxx"), FL);
--Option := File.Get_Option(F2);
File.Clear_Flag_Bits (FL, FL.Bits);
File.Set_Flag_Bits (FL, File.FLAG_WRITE);
File.Set_Flag_Bits (FL, File.FLAG_CREATE);
File.Set_Flag_Bits (FL, File.FLAG_TRUNCATE);
File.Open (F2, H2.Wide.String'("/tmp/yyy"), FL);
File.Set_Option_Bits (Option, File.Option_CRLF_IN);
--File.Set_Option_Bits (Option, File.Option_CRLF_OUT);
--Option.LF := IO.Ascii.Code.Colon;
File.Set_Option (F2, Option);
File.Set_Option (F, Option);
loop
--File.Get_Line (F, Buffer, IL);
File.Get_Line (F, BufferW, IL);
--ada.text_io.put_line (standard.string(buffer(1..il)));
--ada.wide_text_io.put_line (standard.wide_string(bufferw(1..il)));
--File.Read (F, BufferW, IL);
exit when IL <= 0;
--File.Put_Line (F2, Buffer(Buffer'First .. Buffer'First + IL - 1), OL);
File.Put_Line (F2, BufferW(Buffer'First .. Buffer'First + IL - 1), OL);
pragma Assert (IL = OL);
--Ada.Text_IO.PUt (Standard.String(Buffer(Buffer'First .. Buffer'First + IL - 1)));
--Ada.Wide_Text_IO.Put_Line (Standard.Wide_String(BufferW(BufferW'First .. BufferW'First + IL - 1)));
end loop;
--File.Write (F2, H2.Wide.String'("나는 피리부는 사나이 정말로 멋있는 사나이"), OL);
--File.Write_Line (F2, H2.Wide.String'("이세상에 문디없어면 무슨재미로 너도 나도 만세."), OL);
--File.Write_Line (F2, H2.Wide.String'("이세상에 for the first time 우하."), OL);
--File.Write_Line (F2, H2.Wide.String'(""), OL);
File.Close (F2);
File.Close (F);
exception
when Error: others =>
Ada.Text_IO.Put_Line ("~~~~~~~~~~ EXCEPTION ~~~~~~~~~~" & Ada.Exceptions.Exception_Information(Error));
if File.Is_Open(F2) then
File.Close (F2);
end if;
if File.Is_Open(F) then
File.Close (F);
end if;
end;
declare
LC_ALL : constant Interfaces.C.int := 0;
procedure setlocale (
category : Interfaces.C.int;
locale : Interfaces.C.char_array);
pragma Import (C, setlocale);
Empty : aliased Interfaces.C.char_array := (0 => Interfaces.C.nul);
begin
setlocale (LC_ALL, Empty);
end;
Scheme.Open (SI, 2_000_000, Pool'Unchecked_Access);
--Scheme.Open (SI, null);
-- Specify the named stream handler
Scheme.Set_Option (SI, (Scheme.Stream_Option,
Stream.Allocate_Stream'Access,
Stream.Deallocate_Stream'Access)
);
Scheme.Set_Option (SI, (Scheme.Trait_Option, Scheme.No_Optimization));
File_Stream.Name := File_Name'Unchecked_Access;
begin
Scheme.Set_Input_Stream (SI, File_Stream); -- specify main input stream
--Schee.Set_Input_Stream (SI, String_Stream);
exception
when others =>
Ada.Text_IO.Put_Line ("Cannot open Input Stream");
end;
--Scheme.Set_Output_Stream (SI, Stream); -- specify main output stream.
Ada.Text_IO.Put_Line ("-------------------------------------------");
Scheme.Run_Loop (SI, I);
Scheme.Print (SI, I);
Scheme.Close (SI);
Ada.Text_IO.Put_Line ("BYE...");
end scheme;

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with "@abs_builddir@/../lib/libh2";
project Scheme is
for Main use ("scheme");
for Exec_Dir use ".";
for Source_Dirs use (
"@abs_builddir@/../lib",
"@abs_builddir@",
"@abs_srcdir@"
);
for Source_Files use (
"storage.ads",
"storage.adb",
"slim_stream.ads",
"slim_stream.adb",
"wide_stream.ads",
"wide_stream.adb",
"scheme.adb"
);
for Object_Dir use "@ADA_OBJDIR@";
package Compiler is
for Default_Switches ("Ada") use (
"-gnata", "-gnato", "-gnatN", "-gnatwl", "-gnat95", "-gnatW8", "-g",
"-I@abs_srcdir@/../lib",
"-I@abs_srcdir@/../lib/posix",
"-I@abs_builddir@/../lib/posix"
);
end Compiler;
package Builder is
for Executable ("scheme.adb") use "h2scm";
end Builder;
end Scheme;

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with H2.Pool;
with Ada.Unchecked_Conversion;
package body Slim_Stream is
use type S.Object_Size;
------------------------------------------------------------------
procedure Open (Stream: in out String_Input_Stream_Record) is
begin
Ada.Text_IO.Put_Line ("****** OPEN SLIM STRING STREAM ******");
Stream.Pos := 0;
end Open;
procedure Close (Stream: in out String_Input_Stream_Record) is
begin
Ada.Text_IO.Put_Line ("****** CLOSE SLIM STRING STREAM ******");
Stream.Pos := Stream.Str'Last;
end Close;
procedure Read (Stream: in out String_Input_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size) is
Avail: S.Object_Size;
begin
Avail := Stream.Str'Last - Stream.Pos;
if Avail <= 0 then
-- EOF
Last := Data'First - 1;
else
if Avail > Data'Length then
Avail := Data'Length;
end if;
Data(Data'First .. Avail) := Stream.Str(Stream.Pos + 1..Stream.Pos + Avail);
Stream.Pos := Stream.Pos + Avail;
Last := Data'First + Avail - 1;
end if;
end Read;
procedure Write (Stream: in out String_Input_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size) is
begin
--raise S.Stream_Error;
Last := Data'First - 1;
end Write;
------------------------------------------------------------------
procedure Open (Stream: in out File_Stream_Record) is
begin
Ada.Text_IO.Put_Line (">>>>> OPEN SLIM FILE STREAM <<<<< " & Standard.String(Stream.Name.all));
Ada.Text_IO.Open (Stream.Handle, Ada.Text_IO.In_File, Standard.String(Stream.Name.all));
end Open;
procedure Close (Stream: in out File_Stream_Record) is
begin
Ada.Text_IO.Put_Line (">>>>> CLOSE SLIM FILE STREAM <<<<< " & Standard.String(Stream.Name.all));
Ada.Text_IO.Close (Stream.Handle);
end Close;
procedure Read (Stream: in out File_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size) is
begin
for I in Data'First .. Data'Last loop
begin
if Ada.Text_IO.End_Of_File (Stream.Handle) then
Last := I - 1;
return;
end if;
Ada.Text_IO.Get_Immediate (Stream.Handle, Data(I));
--Ada.Text_IO.Get (Stream.Handle, Data(I));
exception
when Ada.Text_IO.End_Error =>
Last := I - 1;
return;
-- other exceptions must be just raised to indicate errors
end;
end loop;
Last := Data'Last;
end Read;
procedure Write (Stream: in out File_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size) is
begin
--raise S.Stream_Error;
Last := Data'First - 1;
end Write;
------------------------------------------------------------------
procedure Allocate_Stream (Interp: in out S.Interpreter_Record;
Name: access S.Object_Character_Array;
Result: out S.Stream_Pointer) is
subtype FSR is File_Stream_Record;
type FSP is access all FSR;
package P is new H2.Pool (FSR, FSP);
X: FSP;
for X'Address use Result'Address;
pragma Import (Ada, X);
begin
X := P.Allocate (S.Get_Storage_Pool(Interp));
X.Name := S.Constant_Object_Character_Array_Pointer(Name);
end Allocate_Stream;
procedure Deallocate_Stream (Interp: in out S.Interpreter_Record;
Source: in out S.Stream_Pointer) is
subtype FSR is File_Stream_Record;
type FSP is access all FSR;
package P is new H2.Pool (FSR, FSP);
X: FSP;
for X'Address use Source'Address;
pragma Import (Ada, X);
begin
P.Deallocate (X, S.Get_Storage_Pool(Interp));
end Deallocate_Stream;
end Slim_Stream;

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with H2.Slim;
with Ada.Text_IO;
package Slim_Stream is
package S renames H2.Slim.Scheme;
------------------------------------------------------------
--type Object_Character_Array_Pointer is access all S.Object_Character_Array;
type Object_Character_Array_Pointer is access constant S.Object_Character_Array;
type String_Input_Stream_Record(Str: Object_Character_Array_Pointer) is new S.Stream_Record with record
Pos: S.Object_Size := 0;
end record;
procedure Open (Stream: in out String_Input_Stream_Record);
procedure Close (Stream: in out String_Input_Stream_Record);
procedure Read (Stream: in out String_Input_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size);
procedure Write (Stream: in out String_Input_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size);
------------------------------------------------------------
type File_Stream_Record is new S.Stream_Record with record
Name: S.Constant_Object_Character_Array_Pointer;
Handle: Ada.Text_IO.File_Type;
end record;
procedure Open (Stream: in out File_Stream_Record);
procedure Close (Stream: in out File_Stream_Record);
procedure Read (Stream: in out File_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size);
procedure Write (Stream: in out File_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size);
------------------------------------------------------------
procedure Allocate_Stream (Interp: in out S.Interpreter_Record;
Name: access S.Object_Character_Array;
Result: out S.Stream_Pointer);
procedure Deallocate_Stream (Interp: in out S.Interpreter_Record;
Source: in out S.Stream_Pointer);
--private
-- type File_Stream_Record is new S.Stream_Record with record
-- Name: S.Constant_Object_Character_Array_Pointer;
-- Handle: Ada.Text_IO.File_Type;
-- end record;
end Slim_Stream;

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with System;
--with System.Address_Image;
with Ada.Text_IO;
package body Storage is
type Size_T is mod 2 ** System.Word_Size;
function Sys_Malloc (Size: Size_T) return System.Address;
--pragma Import (C, Sys_Malloc, Link_Name => "malloc");
pragma Import (Convention => C, Entity => Sys_Malloc, External_Name => "malloc");
procedure Sys_Free (Ptr: System.Address);
--pragma Import (C, Sys_Free, Link_Name => "free");
pragma Import (Convention => C, Entity => Sys_Free, External_Name => "free");
procedure Allocate (Pool: in out Global_Pool; Address : out System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count) is
tmp: System.Address;
use type SSE.Storage_Count;
begin
Ada.Text_IO.Put_Line ("QSE.Global_Pool Allocating " & SSE.Storage_Count'Image (Size) & " " & SSE.Storage_Count'Image (((Size + Alignment - 1) / Alignment) * Alignment));
tmp := Sys_Malloc (Size_T(((Size + Alignment - 1) / Alignment) * Alignment));
if System."=" (tmp, System.Null_Address) then
raise Storage_Error;
else
Address := tmp;
--Ada.Text_IO.Put_Line ("QSE.Global_Pool Returning " & System.Address_Image (Address));
end if;
end Allocate;
procedure Deallocate (Pool: in out Global_Pool; Address : in System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count) is
begin
Ada.Text_IO.Put_Line ("QSE.Global_Pool Deallocating ");
--Ada.Text_IO.Put_Line ("QSE.Global_Pool Deallocating " & System.Address_Image (Address));
Sys_Free (Address);
end Deallocate;
function Storage_Size (Pool: in Global_Pool) return SSE.Storage_Count is
begin
Ada.Text_IO.Put_Line ("QSE.Global_Pool Storage_Size ");
return SSE.Storage_Count'Last;
end Storage_Size;
-- TODO: find a better solution
-- gnat 3.15p somehow looks for the rountines below when H2.Pool is used.
-- let me put these routines here temporarily until i find a proper solution.
procedure Allocate_315P (Pool: in out SSP.Root_Storage_Pool'Class; Address : out System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count);
pragma Export (Ada, Allocate_315P, "system__storage_pools__allocate");
procedure Allocate_315P (Pool: in out SSP.Root_Storage_Pool'Class; Address : out System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count) is
begin
ada.text_io.put_line ("system__storage_pools__allocate...");
SSP.Allocate (Pool, Address, Size, Alignment);
end Allocate_315P;
procedure Deallocate_315P (Pool: in out SSP.Root_Storage_Pool'Class; Address : in System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count);
pragma Export (Ada, Deallocate_315P, "system__storage_pools__deallocate");
procedure Deallocate_315P (Pool: in out SSP.Root_Storage_Pool'Class; Address : in System.Address; Size: in SSE.Storage_Count; Alignment: in SSE.Storage_Count) is
begin
ada.text_io.put_line ("system__storage_pools__deallocate...");
SSP.Deallocate (Pool, Address, Size, Alignment);
end Deallocate_315P;
end Storage;

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with System.Storage_Pools;
with System.Storage_Elements;
package Storage is
package SSE renames System.Storage_Elements;
package SSP renames System.Storage_Pools;
type Global_Pool is new SSP.Root_Storage_Pool with private;
procedure Allocate (Pool: in out Global_Pool;
Address: out System.Address;
Size: in SSE.Storage_Count;
Alignment: in SSE.Storage_Count);
procedure Deallocate (Pool: in out Global_Pool;
Address: in System.Address;
Size: in SSE.Storage_Count;
Alignment: in SSE.Storage_Count);
function Storage_Size (Pool: in Global_Pool) return SSE.Storage_Count;
private
type Global_Pool is new SSP.Root_Storage_Pool with null record;
end Storage;

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with H2.Pool;
with Ada.Unchecked_Conversion;
with Ada.Text_IO; -- for debugging
with Ada.Exceptions;
package body Wide_Stream is
package Utf8 renames H2.Wide.Utf8;
use type S.Object_Size;
------------------------------------------------------------------
procedure Open (Stream: in out String_Input_Stream_Record) is
begin
Ada.Text_IO.Put_Line ("****** OPEN WIDE STRING STREAM ******");
Stream.Pos := 0;
end Open;
procedure Close (Stream: in out String_Input_Stream_Record) is
begin
Ada.Text_IO.Put_Line ("****** CLOSE WIDE STRING STREAM ******");
Stream.Pos := Stream.Str'Last;
end Close;
procedure Read (Stream: in out String_Input_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size) is
Avail: S.Object_Size;
begin
Avail := Stream.Str'Last - Stream.Pos;
if Avail <= 0 then
-- EOF
Last := Data'First - 1;
else
if Avail > Data'Length then
Avail := Data'Length;
end if;
Data(Data'First .. Avail) := Stream.Str(Stream.Pos + 1..Stream.Pos + Avail);
Stream.Pos := Stream.Pos + Avail;
Last := Data'First + Avail - 1;
end if;
end Read;
procedure Write (Stream: in out String_Input_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size) is
begin
--raise S.Stream_Error;
Last := Data'First - 1;
end Write;
------------------------------------------------------------------
procedure Open (Stream: in out File_Stream_Record) is
begin
Ada.Text_IO.Put_Line (">>>>> OPEN WIDE FILE STREAM <<<<< " & Standard.String(Utf8.From_Unicode_String(Utf8.Unicode_String(Stream.Name.all))));
--Ada.Wide_Text_IO.Open (Stream.Handle, Ada.Wide_Text_IO.In_File, Ada.Characters.Conversions.To_String(Standard.Wide_String(Stream.Name.all)));
Ada.Wide_Text_IO.Open (Stream.Handle, Ada.Wide_Text_IO.In_File, Standard.String(Utf8.From_Unicode_String(Utf8.Unicode_String(Stream.Name.all))));
end Open;
procedure Close (Stream: in out File_Stream_Record) is
subtype Wide_String is Standard.Wide_String(1 .. Standard.Natural(Stream.Name'Length));
function To_Wide_String is new Ada.Unchecked_Conversion (S.Object_Character_Array, Wide_String);
begin
--Ada.Wide_Text_IO.Put_Line (">>>>> CLOSE File STREAM <<<<< " & Standard.Wide_String(Stream.Name.all));
Ada.Text_IO.Put_Line (">>>>> CLOSE WIDE FILE STREAM <<<<< " & Standard.String(Utf8.From_Unicode_String(Utf8.Unicode_String(Stream.Name.all))));
begin
ada.wide_text_io.put_line (">> " & Standard.Wide_String(Utf8.To_Unicode_String(Utf8.From_Unicode_String(Utf8.Unicode_String(Stream.Name.all)))));
exception
when Ex: others =>
ada.text_io.put_line ("fuck - " & Ada.Exceptions.Exception_Name(Ex) & Ada.Exceptions.Exception_Information(Ex));
end;
ada.text_io.put_line (">>");
Ada.Wide_Text_IO.Close (Stream.Handle);
end Close;
procedure Read (Stream: in out File_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size) is
begin
for I in Data'First .. Data'Last loop
begin
if Ada.Wide_Text_IO.End_Of_File (Stream.Handle) then
Last := I - 1;
return;
end if;
Ada.Wide_Text_IO.Get_Immediate (Stream.Handle, Data(I));
exception
when Ada.Wide_Text_IO.End_Error =>
Last := I - 1;
return;
-- other exceptions must be just raised to indicate errors
end;
end loop;
Last := Data'Last;
end Read;
procedure Write (Stream: in out File_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size) is
begin
--raise S.Stream_Error;
Last := Data'First - 1;
end Write;
------------------------------------------------------------------
procedure Allocate_Stream (Interp: in out S.Interpreter_Record;
Name: access S.Object_Character_Array;
Result: out S.Stream_Pointer) is
subtype FSR is File_Stream_Record;
type FSP is access all FSR;
package P is new H2.Pool (FSR, FSP);
X: FSP;
for X'Address use Result'Address;
pragma Import (Ada, X);
begin
X := P.Allocate (S.Get_Storage_Pool(Interp));
X.Name := S.Constant_Object_Character_Array_Pointer(Name);
end Allocate_Stream;
procedure Deallocate_Stream (Interp: in out S.Interpreter_Record;
Source: in out S.Stream_Pointer) is
subtype FSR is File_Stream_Record;
type FSP is access all FSR;
package P is new H2.Pool (FSR, FSP);
X: FSP;
for X'Address use Source'Address;
pragma Import (Ada, X);
begin
P.Deallocate (X, S.Get_Storage_Pool(Interp));
end Deallocate_Stream;
end Wide_Stream;

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with H2.Wide;
with Ada.Wide_Text_IO;
package Wide_Stream is
package S renames H2.Wide.Scheme;
------------------------------------------------------------
--type Object_Character_Array_Pointer is access all S.Object_Character_Array;
type Object_Character_Array_Pointer is access constant S.Object_Character_Array;
type String_Input_Stream_Record(Str: Object_Character_Array_Pointer) is new S.Stream_Record with record
Pos: S.Object_Size := 0;
end record;
procedure Open (Stream: in out String_Input_Stream_Record);
procedure Close (Stream: in out String_Input_Stream_Record);
procedure Read (Stream: in out String_Input_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size);
procedure Write (Stream: in out String_Input_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size);
------------------------------------------------------------
type File_Stream_Record is new S.Stream_Record with record
Name: S.Constant_Object_Character_Array_Pointer;
Handle: Ada.Wide_Text_IO.File_Type;
end record;
procedure Open (Stream: in out File_Stream_Record);
procedure Close (Stream: in out File_Stream_Record);
procedure Read (Stream: in out File_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size);
procedure Write (Stream: in out File_Stream_Record;
Data: out S.Object_Character_Array;
Last: out S.Object_Size);
------------------------------------------------------------
procedure Allocate_Stream (Interp: in out S.Interpreter_Record;
Name: access S.Object_Character_Array;
Result: out S.Stream_Pointer);
procedure Deallocate_Stream (Interp: in out S.Interpreter_Record;
Source: in out S.Stream_Pointer);
--private
-- type File_Stream_Record is new S.Stream_Record with record
-- Name: S.Constant_Object_Character_Array_Pointer;
-- Handle: Ada.Wide_Text_IO.File_Type;
-- end record;
end Wide_Stream;