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JetBrains MPS

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Title: JetBrains MPS  
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Subject: YouTrack, Node.js, Semantic-oriented programming
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JetBrains MPS

Meta Programming System
Developer(s) JetBrains
Stable release 3.1 / June 18, 2014 (2014-06-18)
Operating system Cross-platform
License Open source Apache License 2.0
Website /

JetBrains MPS is a metaprogramming system which is being developed by JetBrains. It implements language-oriented programming. MPS is an environment for language definition, a language workbench, and integrated development environment (IDE) for such languages.[1][2][3]


  • Composable languages 1
  • Reusable language infrastructure 2
  • Existing languages 3
  • MPS applications 4
    • Mbeddr 4.1
    • YouTrack 4.2
    • Realaxy editor 4.3
  • Licensing 5
  • See also 6
  • References 7
  • External links 8

Composable languages

Developers from different domains can benefit from domain specific language extensions in general purpose programming languages. For example, Java developers working with financial applications might benefit from built-in support of monetary values. Unfortunately, traditional text based languages are subject to text ambiguity problems which makes such extensions problematic.

MPS supports composable language definitions. This means that languages can be extended, and embedded, and these extensions can be used, and will work, in the same program in MPS. For example, if Java is extended with a better syntax for collections and then again extended with a better syntax for dates, these extensions will work well together.

MPS solves grammar ambiguity issues by working with the abstract syntax tree directly. In order to edit such a tree, a text-like projectional editor is used.[4][5][6]

Reusable language infrastructure

MPS provides a reusable language infrastructure which is configured with language definition languages. MPS also provides many IDE services automatically: editor, code completion, find usages, etc.

Existing languages

  • Base Language - 99% Java reimplemented with MPS. There are a lot of extensions of this language
    • collections language
    • dates language
    • closures language
    • regular expressions language
  • Language definition languages - these language are implemented with themselves, i.e. bootstrapped
    • structure language
    • editor language
    • constraints language
    • typesystem language
    • generator language

MPS applications


mbeddr is an embedded development system based on MPS. It has languages tailored to embedded development and formal methods:[7]

  • Core C language
  • Components
  • Physical Units
  • State machines


In October 2009, JetBrains released the YouTrack bug tracking system - the first commercial software product developed with MPS.[8]

Realaxy editor

In April 2010, the Realaxy ActionScript Editor beta was released, the first commercial IDE based on the MPS platform.


The MPS source code is released under the Apache License.

See also


  1. ^ Martin Fowler. "Language Workbenches: The Killer-App for Domain Specific Languages?". 
  2. ^ Martin Fowler. "IntentionalSoftware". 
  3. ^ Fabien Campagne (2014). "The MPS Language Workbench: Volume I.". 
  4. ^ Srini Penchikala. "JetBrains Meta Programming System Supports Language Oriented Programming and DSLs". 
  5. ^ Sergey Dmitriev. "Language Oriented Programming: The Next Programming Paradigm". 
  6. ^ Konstantin Solomatov. "DSL Adoption with JetBrains MPS". 
  7. ^ "mbeddr official site". 
  8. ^ Charles Humble (2009-10-15). "Evolving Java Without Changing the Language". 

External links

  • Official website
  • MPS blog
  • MPS User's Guide
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