DSL and EMFText

1. EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
DSL and EMFTEXT
DSL AND EMFTEXT
Eclipse Day Bangalore Sep20, 2014
1
RAJKUMAR K (RBEI)
KULANDAI VELU (RBEI)

2. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
2
AGENDA
What is DSL?
Eclipse in DSL
What is EMFText?
Why to use EMFText?
Features of EMFText
EMFText language development process
Customizations Techniques and Concrete Customizations
Integration with Other Frameworks
Demo
DSL and EMFTEXT

3. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
What is DSL?
DSLs are small, expressive programming languages designed for particular domain or task DSL has limited in scope and capabilities DSLs are focused on a certain type of a problem or domain, and on expressing a narrow set of solutions within the context of that limited scope Domain experts can understand, validate and modify DSL programs DSLs are easy to learn and don't need to spend time for learning difficult and complicated languages (C, C++,C#, .NET, Java and etc) Examples HTML, CSS, ANTLR, MAKEFILE, UNIX SHELL SCRIPT, SQL
3
DSL and EMFTEXT

4. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Eclipse in DSL
Eclipse offers frameworks for domain-specific modeling and defining textual domain specific language
Domain-specific modeling
EMF - Modeling frame work and code generation facility for structured model GMF - Supports developing the graphical editors for structured model
Defining textual domain specific language (EMFText)
Enables developers to define textual DSL quickly Don’t require to learn new technologies and concepts Collection of 100 concrete text syntaxes to define new languages of our own Derives the textual syntax for DSL from ECORE meta model
4
DSL and EMFTEXT

5. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
What is EMFText ?
5
Meta Model
Concrete Syntax
Semantics
EMFTEXT
Domain concepts, relations, attributes
Syntax,
Shapes
Behavior,
meaning
DSL and EMFTEXT

6. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Why to use EMFText ?
Readability
Version control
Backward compatibility
OS independent
Quick model instantiation
Tool reuse
Easy to understand
Clear structure
Tracing artifacts
Custom syntax is much easier to read than XML
Comparing and diffing the XML produce useless results
Existing models can be fixed on new version of Meta model
Text can edited on every OS with single text editor
Default HUTN Syntax instantly allows to create model instances
Transform documents (ATL) or analyze them (OCL)
Working on modelling tools allows easy to query
Easier to maintain document formats
Trace requirements from initial documents down to the running code
6
DSL and EMFTEXT

7. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Generation Features
Generation of Independent code Generated code doesn’t contain dependencies to EMFText All code is fully customizable Deployable in non EMFtext environment UI code is generated to a separate plug-in enabling the usage of DSLs in headless environments
Generation of default Syntaxes Syntax that conforms to HUTN standard Java –like syntax Custom syntax configuration
Highly customizable code generation Provide many options to tailoring its code generation process to specific needs Supports 293 customizable code generation options ex: additionalDependencies, additionalExports, disableBuilder
7
DSL and EMFTEXT

8. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Specification Features
Modular specification Modularization and extension of CS specifications Support for abstract syntaxes and syntax imports Simple and precise syntax specification
Default reference resolving mechanisms Default name resolution mechanism External references resolved automatically Complex resolution mechanisms can be realized
Comprehensive syntax analysis Informs developer about potential error in syntax ex: missing syntax for certain meta class Supports 20 plus warning messages
8
DSL and EMFTEXT

9. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Other Features
9
Editor Features Advanced features like Java Editor Outline View Customizable Syntax Highlighting Occurrence Highlighting Code Completion Bracket handling Hyperlinks Text hovers Quick Fix
Build Features Generation of builder and interpreter stubs Customizable builder and interpreter ANT support to generate text syntax plug-ins in build scripts
DSL and EMFTEXT

10. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
EMFText language development process
10
Iterative EMFText Language development process
DSL and EMFTEXT

11. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Specifying a Language Meta-Model
11
Meta model elements: Classes Data Types Enumerations Attributes References(Containment, Non- containment) Cardinalities Inheritance
Creating a new meta model: Define concepts, relations and
properties in an Ecore model Existing meta models can be
imported (e.g., UML, Ecore,…)
DSL and EMFTEXT

12. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
12
Specifying the Language's Concrete Syntax Textual representation of all
Meta-model concepts Automatically create the syntax
generator conforming to HUTN Possible to specify manually the concrete
syntax Syntax specification rules are derived
from EBNF syntax specification language Provide advance support like errors and
warning if consistent during syntax
specification
DSL and EMFTEXT

13. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Specifying the language CS’ syntax
13
Header
SYNTAXDEF <yourFileExtension>
FOR <namespaceURI>
START <Root Model>
Body
(optional )TOKENS { Identifiers, numbers etc}
(optional )TOKENSTYLES {color and font style}
Bottom
Rules{ own rules}
DSL and EMFTEXT

14. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Specifying the language CS’ syntax
14
DSL and EMFTEXT

15. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Customizations Techniques
Overriding Generated Artifacts
Provides Override option for all generated artifacts Possible to specify not to override the specific class or file Possible to customize the hover text using overrideHoverTextProvider
Overriding Meta Information Classes
SetOverride option to false for meta information class Using subclass instead of overriding the class directly Make customizations by overriding individual methods
Using Generated Extension Points
Customize the resource loader by using default_load_options Customize the registration of parser by using additional_extension_parser
15
DSL and EMFTEXT

16. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Customizing Token Resolving
Customizing Reference Resolving
Implementing Post Processors
Implementing Quick Fixes
Implementing Builders
Implementing Launch Support
Enabling Debug Support
Customizing Text Hovers
16
Concrete Customizations
DSL and EMFTEXT

17. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Integration with Other Frameworks
Integration with the EMF Edit Framework
EMFText is tightly integrated with EMF Edit Framework Provider class will be used to obtain icons and labels for the outline view Icons shown in code completion proposals Consistent presentation of DSLs across different kind of editors
Integration with the EMF Validation Framework
EMFText integrate your DSL tooling with EMF validation Framework On editing DSL documents, only live constraints are evaluated Batch constraints are re-evaluated when documents are saved Consistent presentation of DSLs across different kind of editors Ensure constraintProvider extension must set to mixed mode
17
DSL and EMFTEXT

18. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
18
DSL and EMFTEXT

19. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Conclusion
19 EMFText is a tool for defining textual syntax for Ecore-based metamodels Enable developers to define their own textual languages – be it DSL Provides a Domain specific language for syntax specification Generates a full-fledged Eclipse Editor Includes a parser for loading textual models Includes a printer for storing model instances Provides editor will all its customizable components
DSL and EMFTEXT

20. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
20
DSL and EMFTEXT

21. RBEI/EMT | 07/07/2014 | © Robert Bosch Engineering and Business Solutions Limited 2014. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.
Thank you
21
http://www.emftext.org
DSL and EMFTEXT