With MPS you can design your own extensible DSLs and start using them right away to build end-user applications. Unique technology of projectional editing allows to overcome the limits of language parsers, and build much richer DSL editors, such as ones with tables and diagrams.

1. Vladimir Kozhaev
● Freelancer.
● Development of programming languages and
development tools.
● If you need to develop a domain specific
language, IDE based on Eclipse or Inellij IDEA,
parser, compiler do not hesitate to ask me.
● Email: vkozhaev@gmaill.com
● Skype: vladimir.kozhaev
● Blog:
● http://gamesdevandmath.blogspot.com
● http://newlanguageservice.blogspot.com

2. JetBrains MPS

3. When we need metaprogramming
● Generation of boilerplate code

4. When we need metaprogramming
● Generation of boilerplate code
● Programs that generate other programs

5. Programs that generate the programs
● GWT
● TypeScript
● Delphi
● LaTeX, JavaDocs

6. Example from the real life

7. Let's design a Trading Strategies language

8. Let's design a Trading Strategies language
● Select the server
● Select the set of strategies
● Specify the strategy
● Select the working interval

9. Where is problem of this approach?

10. Where is problem of this approach?
We add strategies to the server1 only

11. Where is problem of this approach?
Trading counter of the server is less then server interval, strategy
will never starts

12. What do we want to achieve?
Trading
Server Sex 20
Ichimoku 10 EUR
Ichimoku 10 USD
Server Box 60
Ichimoku 30 EUR
MovingAverage 10 USD,100
Server Jazz 40
Hilbert 20 EUR

13. Metaprogramming,ways of implementation

14. Stay with Java code
● Extra info for domain people

15. Stay with Java code
● Extra info for domain people

16. Internal DSL
● Restricted abilities in Java

17. Internal DSL
● Restricted abilities in Java
● Cowboy coding, if we use another language
for metaprogramming

18. Confit files(XML, JSON,YAML)
● No IDE integration
● Difficult for the coding

19. External DSL Language(ANTLR, Jflex,etc)
● No IDE integration
● Need to know theory of formal languages

20. Demonstration of the demo
Please, see what we have created with MPS

21. What is MPS?

22. What is MPS?
●Meta Programming System based on IntelliJ
platform

23. What is MPS?
● Meta Programming System based on IntelliJ
platform
● Projectional Editor instead of language
parsing

24. MPS Introduction

25. MPS development process

26. MPS structure language
Create elements of
the language in
object oriented way

27. MPS structure language

28. MPS Editor language
● Edit AST directly instead of the parsing the
code

29. MPS Editor language

30. MPS constraints
Row 1 Row 2 Row 3 Row 4
0
2
4
6
8
10
12
Column 1
Column 2
Column 3

31. MPS typesystem

32. MPS generator

33. MPS Advantages
● Integration with IntelliJ IDEA

34. MPS Advantages
● Integration with IntelliJ Platform
● Good documentation

35. MPS Advantages
● Integration with IntelliJ Platform
● Good documentation
● A lot of examples

36. MPS Advantages
●
Integration with IntelliJ IDEA
● Good documentation
● A lot of examples
● Don't need to know the theory of the
syntax analyses

37. MPS Disadvantages
● Only IntelliJ ecosystem

38. MPS Disadvantages
● Only IntelliJ ecosystem
● Only desktop solution

39. MPS Disadvantages
● Only IntelliJ ecosystem
● Only desktop solution
● Not the best solution to parse text files

40. MPS Disadvantages
● Only IntelliJ ecosystem
● Only desktop solution
● Not the best solution to parse text files
● Some tricky editor

41. Conclusions
MPS is especially good for
● Code generations
● IDE development based on IntelliJ platform

42. What next?
● https://www.youtube.com/user/JetBrainsTV/sear
ch?query=MPS
● https://www.jetbrains.com/mps/documentation/

43. Questions?