Overview
| Comment: | smaz-tools: add a Dictionary constructor from a word list |
|---|---|
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
fd239bbe25d791267d514c75225bee7d |
| User & Date: | nat on 2016-09-05 21:59:34 |
| Other Links: | manifest | tags |
Context
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2016-09-06
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| 21:24 | smaz-tools: new primitive to output Ada code for a dictionary check-in: 8a9dabe25e user: nat tags: trunk | |
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2016-09-05
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| 21:59 | smaz-tools: add a Dictionary constructor from a word list check-in: fd239bbe25 user: nat tags: trunk | |
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2016-09-04
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| 20:27 | smaz-tools: new package with tools to help with Smaz dictionaries check-in: a168e51311 user: nat tags: trunk | |
Changes
Modified src/natools-smaz-tools.adb from [8db174524e] to [b9e061db75].
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-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. --
------------------------------------------------------------------------------
package body Natools.Smaz.Tools is
package Sx renames Natools.S_Expressions;
function Dummy_Hash (Value : String) return Natural;
-- Placeholder for Hash member, always raises Program_Error
------------------------------
-- Local Helper Subprograms --
------------------------------
function Dummy_Hash (Value : String) return Natural is
pragma Unreferenced (Value);
begin
raise Program_Error with "Dummy_Hash called";
return 0;
end Dummy_Hash;
----------------------
-- Public Interface --
----------------------
procedure Read_List
(List : out String_Lists.List;
|
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exit Read_Loop;
end case;
Descriptor.Next (Event);
end loop Read_Loop;
end Read_List;
function To_Dictionary
(List : in String_Lists.List;
Variable_Length_Verbatim : in Boolean)
return Dictionary
is
Dict_Last : constant Ada.Streams.Stream_Element
:= Ada.Streams.Stream_Element (String_Lists.Length (List)) - 1;
String_Size : Natural := 0;
Max_Word_Length : Positive := 1;
begin
for S of List loop
String_Size := String_Size + S'Length;
if S'Length > Max_Word_Length then
Max_Word_Length := S'Length;
end if;
end loop;
declare
Offsets : Offset_Array (0 .. Dict_Last);
Values : String (1 .. String_Size);
Current_Offset : Positive := 1;
Current_Index : Ada.Streams.Stream_Element := 0;
Next_Offset : Positive;
begin
for S of List loop
Offsets (Current_Index) := Current_Offset;
Next_Offset := Current_Offset + S'Length;
Values (Current_Offset .. Next_Offset - 1) := S;
Current_Offset := Next_Offset;
Current_Index := Current_Index + 1;
end loop;
pragma Assert (Current_Index = Dict_Last + 1);
pragma Assert (Current_Offset = String_Size + 1);
return
(Dict_Last => Dict_Last,
String_Size => String_Size,
Variable_Length_Verbatim => Variable_Length_Verbatim,
Max_Word_Length => Max_Word_Length,
Offsets => Offsets,
Values => Values,
Hash => Dummy_Hash'Access);
end;
end To_Dictionary;
end Natools.Smaz.Tools;
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Modified src/natools-smaz-tools.ads from [bf468fcb8e] to [41ef1854d1].
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(String);
procedure Read_List
(List : out String_Lists.List;
Descriptor : in out S_Expressions.Descriptor'Class);
-- Read atoms from Descriptor to fill List
function To_Dictionary
(List : in String_Lists.List;
Variable_Length_Verbatim : in Boolean)
return Dictionary
with Pre => String_Lists.Length (List) in 1 ..
Ada.Containers.Count_Type (Ada.Streams.Stream_Element'Last);
-- Build a Dictionary object from a string list
-- Note that Hash is set to a placeholder which uncinditionnally
-- raises Program_Error when called.
end Natools.Smaz.Tools;
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