Template driven code generation tool, fore real time and safety critical systems. API message formating and serialisation. Template driven source code generator for any language : Ada, C, C#, Java, ...

1. PLUGPLUG
Presentation Layer Universal GeneratorPresentation Layer Universal Generator
P&D/CSD/DCEP&D/CSD/DCE--TFP/ASTTFP/AST
A joint company of Thomson-CSF Airsys and Siemens

2. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/20042
OVERVIEW
Compiler & Parser
PLUG (Presentation Layer Universal Generator) through
applications :
Coder generation : Object Message Passing
System specifications : IRS
CORBA Migration
Plug Integration Mock-Up
PLUG Performances
* PATIO : Platform for ATM Tools Integration to Pre-operation

3. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/20043
Specification Language
Network
Node A Node B
IRS (IDL)
Struct message1
Item1 : short;
Item2 : long;
Item3 : char;
Item4 : Boolean;
Item4 : Struct data
Item1 : :char;
Item2 : long;
Item3 : char;
Item4 : Boolean
Item4 : char;
end struct data;
end struct message1
Communication Language
Programming
Language (C++)
Programming
Language (Ada)
Communication Object Design

4. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/20044
Syntax and Language
Abstract Syntax : specification language :
ASN.1, IDL, (ADA)
Working Syntax : programming language :
ADA, C, C++
Transfert (concrete) Syntax : communication
language :
BER/PER, XDR, CDR,
ASTERIX, ADEXP, ICAO

5. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/20045
PLUG Compilers
ABSTRACT SYNTAX
PLUG Ada RPC : API
PLUG ASN.1 : ATN
PLUG IDL : CORBA
Front End (FE)
TRANSFERT SYNTAX
PLUG XDR : API
PLUG BER/PER : ATN
PLUG CDR : CORBA, ESIOP
Back End (BE)

6. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/20046
PLUG Parsers
PLUG ASTERIX :
Radar, Meteo, Categorie XX
PLUG ADEXP :
Flight Plan, ATS, AIS, CFMU, IFPS,
OLDI
PLUG ICAO :
Flight Plan, ATS, OLDI, ...
Tracks
Primary
and secondary RADAR

7. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/20047
XDR
Stub Generator Coder Generator
C Ada
Ada API
C Ada
PLUG : Presentation Layer Universal
Generator
(IDL)
(CDR)
(IDL,
C++)

8. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/20048
PLUG Coder generator
IFF
XDR/C generated
encoding source files
Front End
(lex/yacc)
Back End
XDR/ADA generated
encoding source files
Ada
Grammar
(BNF)
grammar analyzegrammar analyze
XDR Templates
expansion
XDR Templates
expansion
XDR
Templates
(TDL)
Ada
API
Independant
Format File
Independant
Format File
Abstract Syntax Tree

9. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/20049
Object message passing with PLUG
UBSS manages pipes not the semantic of
transported messages
PLUG Coder are used to manage FIFO and CDC
messages.
Ada type specification is used as Specification
input file (AS)
IRS documents are replaced by Ada specification

10. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200410
Plug coder use : FIFO encode/decode
FIFO
Enqueue Dequeue
Type A
Type B
Type Simple 1
Type Simple 2
End Type B
Type C
Type Simple 1
Type Simple 3
Type D
Type Simple 3
Type Simple 2
End Type D
End Type C
End Type A
Type A
Type B
Type Simple 1
Type Simple 2
End Type B
Type C
Type Simple 1
Type Simple 3
Type D
Type Simple 3
Type Simple 2
End Type D
End Type C
End Type A
Type Ada Type C
Ada
XDR
XDR
C
Call Back encoding routing
XDR buffer
ToolsUser Tools User

11. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200411
Plug coder use : CDC encode/decode
Ada
XDR
XDR
C
Type A
Type B
Type Simple 1
Type Simple 2
End Type B
Type C
Type Simple 1
Type Simple 3
Type D
Type Simple 3
Type Simple 2
End Type D
End Type C
End Type A
Type A
Type B
Type Simple 1
Type Simple 2
End Type B
Type C
Type Simple 1
Type Simple 3
Type D
Type Simple 3
Type Simple 2
End Type D
End Type C
End Type A
Type Ada Type C
Call Back encoding routing
CDC
CDC_write() CDC_read()

12. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200412
Ada
CSCI
C
CSCI
XDR
Ada Compiler C Compiler
XDR : How it works.

13. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200413
C/XDR
Coder
(C)
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
Field H
Field I
End struct Message
Type1
C structure
Field 1Field 2Field 3Field 4Field 5Field 6Field 7Field 8Field 9
XDR StreamAda/XDR
Coder
(Ada)
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
Field H
Field I
End struct Message
Type1
Ada structure
Interface
Specification
Abstract Syntax
Transfert Syntax
Programming SyntaxProgramming Syntax
Object Message Passing Syntax

14. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200414
Coder : Structure Serialization
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
End struct Message type1
Ada or C structure
XDR Stream
XDR Convertor
Elementary types are : Int, Char, float, Boolean Field 1Field 2Field 3Field 4Field 5 Header
Type 1
A B
C D
E
F G
Expansion : according to Data Types : 10 % to 20 %,
XDR compress, 0,6 to 0,8 % according to data values

15. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200415
C/XDR
Coder
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
Field H
Field I
End struct Message
Type1
C structure
Field 1Field 2Field 3Field 4Field 5Field 6Field 7Field 8Field 9
XDR Stream
Ada/XDR
Coder
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
Field H
Field I
End struct Message
Type1
Ada structure
Interface
Specification
C/XDR
Coder
Generator
Ada to C
Translator
Ada/XDR
Coder
Generator
Ada Package
Specification
(With)
Code generation output

16. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200416
PLUG Generated Files
PLUG/XDR generates 5 Files :
ADA :
1. Coder specification (.ads)
2. Coder body (.adb)
C :
3. API header file (.h)
4. Coder specification (.h)
5. Coder body (.c)
The Ada API header file (specification) is the API
specification itself.

17. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200417
PLUG Generated Files
Ada
API
.h.h
.c.c
.ads.ads .h.h .ads.ads
.adb.adb
1 2 4
53Ada and C structure
Ada and C XDR Coder
=

18. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200418
Ada Program C ProgramXDR format disk file
PUT (Ada Type)
GET ( Ada Type)
read (C Type)
write (C Type)
Plug coder use : Off line file universal format

19. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200419
C/XDR
Coder
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
Field H
Field I
End struct Message
Type1
C structure
Field 1Field 2Field 3Field 4Field 5Field 6Field 7Field 8Field 9
XDR Stream
C/XDR
Coder
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
Field H
Field I
End struct Message
Type1
C structure
C/XDR
Coder
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
Field H
Field I
End struct Message
Type1
C structure
Field 1Field 2Field 3Field 4Field 5Field 6Field 7Field 8Field 9
XDR Stream
Ada/XDR
Coder
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
Field H
Field I
End struct Message
Type1
Ada structure
Ada/XDR
Coder
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
Field H
Field I
End struct Message
Type1
Ada structure
Field 1Field 2Field 3Field 4Field 5Field 6Field 7Field 8Field 9
XDR Stream
Ada/XDR
Coder
Struct Message Type 1
Field A
Field B
Field C
Field D
Field E
Field F
Field G
Field H
Field I
End struct Message
Type1
Ada structure
Coder context

20. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200420
Plug other possible applications
Symbolic trace and debug functions
Complex structure symbolic dump
Programming Language Translator
Ada to C, Ada to C++
Ada to IDL (CORBA Migration)
Off line and recording files management
XDR standard file format

21. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200421
IFF
IDL Front End
CORBA
IDL
PLUG modularity
ADa Front End
Ada
API
ASN.1 Front End
ASN.1
CDR Back End
CDR generated
encoding source files
XDR Back End
XDR generated
encoding source files
BER/PER BE
BER/PER generated
encoding source files

22. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200422
System Specifications : IRS
System
IRS
Programming Types

23. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200423
IRS = Ada specifications = Common
Radar Data
ProcessingRadar Data
Processing
Flight Plan
ProcessingFlight Plan
Processing
Controler
Working
Position
Controler
Working
Position
Radar Front
ProcessingRadar Front
Processing
Dual LAN
FDDI
AFTN/CIDIN
ATFM
ADJACENT
FIR'S/TWR'S
MET Centres
RADAR
Controler
Working
Position
Controler
Working
Position
System
IRS
(Ada)
Ada
C, C++, Java

24. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200424
CORBA MIGRATION : Ada To IDL translator
System
IRS
ADA
System
IRS
IDL

25. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200425
ESIOP
Time
Time
Event
Event
Life
Cycle
Life
CyclePersistency
Persistency
TP CP
Secto
Flight
.......
ORB
CORBA
Radar Data
Processing
Radar Data
Processing
Flight Plan
Processing
Flight Plan
Processing
Controler
Working
Position
Controler
Working
Position
Radar Front
Processing
Radar Front
Processing
Dual LAN
FDDI
AFTN/CIDIN
ATFM
ADJACENT
FIR'S/TWR'S
MET Centres
RADAR
Controler
Working
Position
Controler
Working
Position
Ada
C, C++, Java
APPLICATION
(Ada)
UBSS
IIOP
GIOP
IIOP

26. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200426
PLUG Integration Mock-Up
ODS
FPL
IDENT
CDCDB
CDC
CDCCDC
CDC

27. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200427
Mock-up Scenario
Use Plug for FPL CDC
Keep others CDC
Adapt ODS for FPL Types
Perform Test and Performances
Evaluation
Evaluate Adaptation Effort for all CDCs

28. E.FUCHS
plug.ppt
P&D/SSD/TCE/TFP/AST - 28/03/200428
PLUG Performances
Usual Case : C Structure to XDR strings : 10 to 20 %
XDR compress : 3200 Bytes = 2100 Bytes at 0,05 ms
FPL CDC structure :
Current size : 2460 Bytes
Common FPL Ada record XDR Strings : 3250 Bytes
Expansion : 33 %
FPL Encoding duration : 195 micro seconde