Overview
| Comment: | s_expressions-atom_buffers: add primitives to use atom buffers as octet stacks |
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| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
7b0544e9fcc62a1f30ef3346d5a95df1 |
| User & Date: | nat on 2014-01-19 22:04:59 |
| Other Links: | manifest | tags |
Context
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2014-01-20
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| 19:48 | s_expressions-atom_buffers-tests: add tests for the new octet stack interface check-in: 71a9406a61 user: nat tags: trunk | |
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2014-01-19
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| 22:04 | s_expressions-atom_buffers: add primitives to use atom buffers as octet stacks check-in: 7b0544e9fc user: nat tags: trunk | |
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2014-01-18
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| 11:12 | s_expressions-parsers-tests: add more subexpression test cases check-in: 2e81806813 user: nat tags: trunk | |
Changes
Modified src/natools-s_expressions-atom_buffers.adb from [3eff901ca5] to [497d821f36].
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procedure Append (Buffer : in out Atom_Buffer; Data : in Octet) is
begin
Preallocate (Buffer, 1);
Buffer.Ref.Update.Data.all (Buffer.Used + 1) := Data;
Buffer.Used := Buffer.Used + 1;
end Append;
procedure Append_Reverse (Buffer : in out Atom_Buffer; Data : in Atom) is
procedure Process (Target : in out Atom);
procedure Process (Target : in out Atom) is
begin
for I in reverse Data'Range loop
Buffer.Used := Buffer.Used + 1;
Target (Buffer.Used) := Data (I);
end loop;
end Process;
begin
Preallocate (Buffer, Data'Length);
Buffer.Ref.Update (Process'Access);
end Append_Reverse;
function Length (Buffer : Atom_Buffer) return Count is
begin
return Buffer.Used;
end Length;
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function Element (Buffer : Atom_Buffer; Position : Count) return Octet is
begin
return Buffer.Ref.Query.Data.all (Position);
end Element;
procedure Pop (Buffer : in out Atom_Buffer; Data : out Octet) is
begin
Data := Buffer.Ref.Query.Data.all (Buffer.Used);
Buffer.Used := Buffer.Used - 1;
end Pop;
procedure Hard_Reset (Buffer : in out Atom_Buffer) is
begin
Buffer.Ref.Reset;
Buffer.Available := 0;
Buffer.Used := 0;
end Hard_Reset;
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Modified src/natools-s_expressions-atom_buffers.ads from [73413c8038] to [b0af66da8f].
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procedure Preallocate (Buffer : in out Atom_Buffer; Length : in Count);
-- Preallocate enough memory to append Length octets without
-- any further allocation.
procedure Append (Buffer : in out Atom_Buffer; Data : in Atom);
procedure Append (Buffer : in out Atom_Buffer; Data : in Octet);
-- Append Data after the end of Buffer
procedure Append_Reverse (Buffer : in out Atom_Buffer; Data : in Atom);
-- Append bytes from Atom from last to first
function Length (Buffer : Atom_Buffer) return Count;
function Data (Buffer : Atom_Buffer) return Atom;
procedure Query
(Buffer : in Atom_Buffer;
Process : not null access procedure (Data : in Atom));
procedure Read
(Buffer : in Atom_Buffer;
Data : out Atom;
Length : out Count);
function Element (Buffer : Atom_Buffer; Position : Count) return Octet;
-- Accessors to the whole buffer as an Atom
procedure Pop (Buffer : in out Atom_Buffer; Data : out Octet);
-- Remove last octet from Buffer and store it in Data
function Raw_Query (Buffer : Atom_Buffer) return Atom_Refs.Accessor;
-- Accessor to the whole allocated memory
procedure Hard_Reset (Buffer : in out Atom_Buffer);
-- Clear buffer and release internal memory
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