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riscv-gcc-1
Commit b18acc1b by Arnaud Charlet
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New file. 

From-SVN: r134081
parent c4b8d145
Showing with 698 additions and 0 deletions
gcc/ada/s-ststop.adb 0 → 100644
------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- S Y S T E M . S T R I N G S . S T R E A M _ O P S --
-- --
-- B o d y --
-- --
-- Copyright (C) 2008, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
pragma Warnings (Off);
pragma Compiler_Unit;
pragma Warnings (On);
with Ada.Streams; use Ada.Streams;
with Ada.Streams.Stream_IO; use Ada.Streams.Stream_IO;
with Ada.Unchecked_Conversion;
with System.Stream_Attributes; use System;
package body System.Strings.Stream_Ops is
-- The following package provides an IO framework for strings. Depending
-- on the version of System.Stream_Attributes as well as the size of
-- formal parameter Character_Type, the package will either utilize block
-- IO or character-by-character IO.
generic
type Character_Type is private;
type String_Type is array (Positive range <>) of Character_Type;
package Stream_Ops_Internal is
procedure Read
(Strm : access Root_Stream_Type'Class;
Item : out String_Type);
procedure Write
(Strm : access Root_Stream_Type'Class;
Item : String_Type);
end Stream_Ops_Internal;
-------------------------
-- Stream_Ops_Internal --
-------------------------
package body Stream_Ops_Internal is
-- The following value represents the number of BITS allocated for the
-- default block used in string IO. The sizes of all other types are
-- calculated relative to this value.
Default_Block_Size : constant := 512 * 8;
-- Shorthand notation for stream element and character sizes
C_Size : constant Integer := Character_Type'Size;
SE_Size : constant Integer := Stream_Element'Size;
-- The following constants describe the number of stream elements or
-- characters that can fit into a default block.
C_In_Default_Block : constant Integer := Default_Block_Size / C_Size;
SE_In_Default_Block : constant Integer := Default_Block_Size / SE_Size;
-- Buffer types
subtype Default_Block is Stream_Element_Array
(1 .. Stream_Element_Offset (SE_In_Default_Block));
subtype String_Block is String_Type (1 .. C_In_Default_Block);
-- Block IO is used in the following two scenarios:
-- 1) When the size of the character type equals that of the stream
-- element type, regardless of endianness.
-- 2) When using the standard stream IO routines for elementary
-- types which guarantees the same endianness over partitions.
Use_Block_IO : constant Boolean :=
C_Size = SE_Size
or else Stream_Attributes.Block_IO_OK;
-- Conversions to and from Default_Block
function To_Default_Block is
new Ada.Unchecked_Conversion (String_Block, Default_Block);
function To_String_Block is
new Ada.Unchecked_Conversion (Default_Block, String_Block);
----------
-- Read --
----------
procedure Read
(Strm : access Root_Stream_Type'Class;
Item : out String_Type)
is
begin
if Strm = null then
raise Constraint_Error;
end if;
-- Nothing to do if the desired string is empty
if Item'Length = 0 then
return;
end if;
if Use_Block_IO then
declare
-- Determine the size in BITS of the block necessary to contain
-- the whole string.
Block_Size : constant Natural :=
(Item'Last - Item'First + 1) * C_Size;
-- Item can be larger than what the default block can store,
-- determine the number of whole reads necessary to read the
-- string.
Blocks : constant Natural := Block_Size / Default_Block_Size;
-- The size of Item may not be a multiple of the default block
-- size, determine the size of the remaining chunk in BITS.
Rem_Size : constant Natural :=
Block_Size mod Default_Block_Size;
-- String indices
Low : Positive := Item'First;
High : Positive := Low + C_In_Default_Block - 1;
-- End of stream error detection
Last : Stream_Element_Offset := 0;
Sum : Stream_Element_Offset := 0;
begin
-- Step 1: If the string is too large, read in individual
-- chunks the size of the default block.
if Blocks > 0 then
declare
Block : Default_Block;
begin
for Counter in 1 .. Blocks loop
Read (Strm.all, Block, Last);
Item (Low .. High) := To_String_Block (Block);
Low := High + 1;
High := Low + C_In_Default_Block - 1;
Sum := Sum + Last;
Last := 0;
end loop;
end;
end if;
-- Step 2: Read in any remaining elements
if Rem_Size > 0 then
declare
subtype Rem_Block is Stream_Element_Array
(1 .. Stream_Element_Offset (Rem_Size / SE_Size));
subtype Rem_String_Block is
String_Type (1 .. Rem_Size / C_Size);
function To_Rem_String_Block is new
Ada.Unchecked_Conversion (Rem_Block, Rem_String_Block);
Block : Rem_Block;
begin
Read (Strm.all, Block, Last);
Item (Low .. Item'Last) := To_Rem_String_Block (Block);
Sum := Sum + Last;
end;
end if;
-- Step 3: Potential error detection. The sum of all the
-- chunks is less than we initially wanted to read. In other
-- words, the stream does not contain enough elements to fully
-- populate Item.
if (Integer (Sum) * SE_Size) / C_Size < Item'Length then
raise End_Error;
end if;
end;
-- Character-by-character IO
else
declare
C : Character_Type;
begin
for Index in Item'First .. Item'Last loop
Character_Type'Read (Strm, C);
Item (Index) := C;
end loop;
end;
end if;
end Read;
-----------
-- Write --
-----------
procedure Write
(Strm : access Root_Stream_Type'Class;
Item : String_Type)
is
begin
if Strm = null then
raise Constraint_Error;
end if;
-- Nothing to do if the input string is empty
if Item'Length = 0 then
return;
end if;
if Use_Block_IO then
declare
-- Determine the size in BITS of the block necessary to contain
-- the whole string.
Block_Size : constant Natural := Item'Length * C_Size;
-- Item can be larger than what the default block can store,
-- determine the number of whole writes necessary to output the
-- string.
Blocks : constant Natural := Block_Size / Default_Block_Size;
-- The size of Item may not be a multiple of the default block
-- size, determine the size of the remaining chunk.
Rem_Size : constant Natural :=
Block_Size mod Default_Block_Size;
-- String indices
Low : Positive := Item'First;
High : Positive := Low + C_In_Default_Block - 1;
begin
-- Step 1: If the string is too large, write out individual
-- chunks the size of the default block.
for Counter in 1 .. Blocks loop
Write (Strm.all, To_Default_Block (Item (Low .. High)));
Low := High + 1;
High := Low + C_In_Default_Block - 1;
end loop;
-- Step 2: Write out any remaining elements
if Rem_Size > 0 then
declare
subtype Rem_Block is Stream_Element_Array
(1 .. Stream_Element_Offset (Rem_Size / SE_Size));
subtype Rem_String_Block is
String_Type (1 .. Rem_Size / C_Size);
function To_Rem_Block is new
Ada.Unchecked_Conversion (Rem_String_Block, Rem_Block);
begin
Write (Strm.all, To_Rem_Block (Item (Low .. Item'Last)));
end;
end if;
end;
-- Character-by-character IO
else
for Index in Item'First .. Item'Last loop
Character_Type'Write (Strm, Item (Index));
end loop;
end if;
end Write;
end Stream_Ops_Internal;
-- Specific instantiations for different string types
package String_Ops is
new Stream_Ops_Internal
(Character_Type => Character,
String_Type => String);
package Wide_String_Ops is
new Stream_Ops_Internal
(Character_Type => Wide_Character,
String_Type => Wide_String);
package Wide_Wide_String_Ops is
new Stream_Ops_Internal
(Character_Type => Wide_Wide_Character,
String_Type => Wide_Wide_String);
------------------
-- String_Input --
------------------
function String_Input
(Strm : access Ada.Streams.Root_Stream_Type'Class) return String
is
begin
if Strm = null then
raise Constraint_Error;
end if;
declare
Low : Positive;
High : Positive;
begin
-- Read the bounds of the string
Positive'Read (Strm, Low);
Positive'Read (Strm, High);
declare
Item : String (Low .. High);
begin
-- Read the character content of the string
String_Read (Strm, Item);
return Item;
end;
end;
end String_Input;
-------------------
-- String_Output --
-------------------
procedure String_Output
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : String)
is
begin
if Strm = null then
raise Constraint_Error;
end if;
-- Write the bounds of the string
Positive'Write (Strm, Item'First);
Positive'Write (Strm, Item'Last);
-- Write the character content of the string
String_Write (Strm, Item);
end String_Output;
-----------------
-- String_Read --
-----------------
procedure String_Read
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : out String)
is
begin
String_Ops.Read (Strm, Item);
end String_Read;
------------------
-- String_Write --
------------------
procedure String_Write
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : String)
is
begin
String_Ops.Write (Strm, Item);
end String_Write;
-----------------------
-- Wide_String_Input --
-----------------------
function Wide_String_Input
(Strm : access Ada.Streams.Root_Stream_Type'Class)
return Wide_String
is
begin
if Strm = null then
raise Constraint_Error;
end if;
declare
Low : Positive;
High : Positive;
begin
-- Read the bounds of the string
Positive'Read (Strm, Low);
Positive'Read (Strm, High);
declare
Item : Wide_String (Low .. High);
begin
-- Read the character content of the string
Wide_String_Read (Strm, Item);
return Item;
end;
end;
end Wide_String_Input;
------------------------
-- Wide_String_Output --
------------------------
procedure Wide_String_Output
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : Wide_String)
is
begin
if Strm = null then
raise Constraint_Error;
end if;
-- Write the bounds of the string
Positive'Write (Strm, Item'First);
Positive'Write (Strm, Item'Last);
-- Write the character content of the string
Wide_String_Write (Strm, Item);
end Wide_String_Output;
----------------------
-- Wide_String_Read --
----------------------
procedure Wide_String_Read
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : out Wide_String)
is
begin
Wide_String_Ops.Read (Strm, Item);
end Wide_String_Read;
-----------------------
-- Wide_String_Write --
-----------------------
procedure Wide_String_Write
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : Wide_String)
is
begin
Wide_String_Ops.Write (Strm, Item);
end Wide_String_Write;
----------------------------
-- Wide_Wide_String_Input --
----------------------------
function Wide_Wide_String_Input
(Strm : access Ada.Streams.Root_Stream_Type'Class)
return Wide_Wide_String
is
begin
if Strm = null then
raise Constraint_Error;
end if;
declare
Low : Positive;
High : Positive;
begin
-- Read the bounds of the string
Positive'Read (Strm, Low);
Positive'Read (Strm, High);
declare
Item : Wide_Wide_String (Low .. High);
begin
-- Read the character content of the string
Wide_Wide_String_Read (Strm, Item);
return Item;
end;
end;
end Wide_Wide_String_Input;
-----------------------------
-- Wide_Wide_String_Output --
-----------------------------
procedure Wide_Wide_String_Output
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : Wide_Wide_String)
is
begin
if Strm = null then
raise Constraint_Error;
end if;
-- Write the bounds of the string
Positive'Write (Strm, Item'First);
Positive'Write (Strm, Item'Last);
-- Write the character content of the string
Wide_Wide_String_Write (Strm, Item);
end Wide_Wide_String_Output;
---------------------------
-- Wide_Wide_String_Read --
---------------------------
procedure Wide_Wide_String_Read
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : out Wide_Wide_String)
is
begin
Wide_Wide_String_Ops.Read (Strm, Item);
end Wide_Wide_String_Read;
----------------------------
-- Wide_Wide_String_Write --
----------------------------
procedure Wide_Wide_String_Write
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : Wide_Wide_String)
is
begin
Wide_Wide_String_Ops.Write (Strm, Item);
end Wide_Wide_String_Write;
end System.Strings.Stream_Ops;
gcc/ada/s-ststop.ads 0 → 100644
------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- S Y S T E M . S T R I N G S . S T R E A M _ O P S --
-- --
-- S p e c --
-- --
-- Copyright (C) 2008, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This package provides subprogram implementations of stream attributes for
-- the following types:
-- Ada.String
-- Ada.Wide_String
-- Ada.Wide_Wide_String
--
-- The compiler will generate references to the subprograms in this package
-- when expanding stream attributes for the above mentioned types. Example:
--
-- String'Output (Some_Stream, Some_String);
--
-- will be expanded into:
--
-- String_Output (Some_Stream, Some_String);
pragma Warnings (Off);
pragma Compiler_Unit;
pragma Warnings (On);
with Ada.Streams;
package System.Strings.Stream_Ops is
------------------------------
-- String stream operations --
------------------------------
function String_Input
(Strm : access Ada.Streams.Root_Stream_Type'Class)
return String;
procedure String_Output
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : String);
procedure String_Read
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : out String);
procedure String_Write
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : String);
-----------------------------------
-- Wide_String stream operations --
-----------------------------------
function Wide_String_Input
(Strm : access Ada.Streams.Root_Stream_Type'Class)
return Wide_String;
procedure Wide_String_Output
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : Wide_String);
procedure Wide_String_Read
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : out Wide_String);
procedure Wide_String_Write
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : Wide_String);
----------------------------------------
-- Wide_Wide_String stream operations --
----------------------------------------
function Wide_Wide_String_Input
(Strm : access Ada.Streams.Root_Stream_Type'Class)
return Wide_Wide_String;
procedure Wide_Wide_String_Output
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : Wide_Wide_String);
procedure Wide_Wide_String_Read
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : out Wide_Wide_String);
procedure Wide_Wide_String_Write
(Strm : access Ada.Streams.Root_Stream_Type'Class;
Item : Wide_Wide_String);
end System.Strings.Stream_Ops;
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