20090224 Mofscript Tool
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MOFScript Ander Zubizarreta 2009-3-18
Big Picture Transformation definition
metamodel
template
<>
Model
Code
Big Picture (our example) Transformation definition
EMF
Wtsl.xsd
Wtsl.ecore
Cpp template
<>
Controllables. wtsl
C++ Code
Contents
1. MOFScript Tool 2. MOFScript Language 3. Example
MOFScript tool Eclipse plugin tool for model to text transformation supports generation of implementation code or documentation from models
MOFScript M2T
<>
Doc
Code
MOFScript tool
Rule-based .m2t extension Allows various input models Code completion Transformations can also be represented as models (XMI)
MOFScript
Creating transformation
File New Other MOFScript File
1
2
MOFScript Editor
MOFScript Compiling
MOFScript Executing
Select input model
MOFScript Console
MOFScript language Transformation module – The definition of the transformation – Defined using keyword textmodule or texttransformation – It defines the input metamodels – The body of the transformation module contains the rules
Transformation Inheritance – Transformations can be extended using extends keyword – Rules are inherited and they can be used or overriden in the subtransformation
MOFScript language Imports – A transformation may import other transformations as libraries
Variables and properties (constants) – Variables and properties can be declared either globally or locally – They can be of any of the MOFScript types
MOFScript language Rules – Elements of a rule: • • • •
Context type -> metamodel type (optional) Return type (optional) Input parameters (optional) Body -> set of statements
– Types of rules: • Entry point rules – Defines where the execution starts -> main() – Defines for which metamodel element type it is executed – It is executed as many times as entry point type elements are in the input model
• Entry point rules without context type – It is executed only once
• Abstract rules – Abstract rules can be defined
– Rule Overriding • Rules can be overriden, either from imported transformation or within the same transformation – Different rule with the same name will be called depending on the context type.
MOFScript language Files – Declaration of an output device for text. – Declared using keyword file. – File name and extension are given as a parameter
If statements, Iterators, While statements, Select expressions, Printing, Logging, Expressions – Similar to other languages
Types – Strings, Integer, Real, Boolean, List, Hashtable, Object, Model • Many operations available for each type
Built-in functions – Many built-in functions are available in MOFScript: System functions and Output utility functions
Other features: – Reflection support, Java invocation, UML2 integration, Unprotected Blocks, Aspects, M2M transformation
MOFScript language For more detailed information:
– MOFScript Language Reference in Eclipse Help – Mofscript user guide: http://www.eclipse.org/gmt/mofscript/doc/MOFScript-User-
For more information: – http://www.eclipse.org/gmt/mofscript/doc/MOFScript-User-Guide.pdf –
Big Picture Transformation definition
metamodel
template
<
Model
Code
Big Picture (our example) Transformation definition
EMF
Wtsl.xsd
Wtsl.ecore
Cpp template
<
Controllables. wtsl
C++ Code
Contents
1. MOFScript Tool 2. MOFScript Language 3. Example
MOFScript tool Eclipse plugin tool for model to text transformation supports generation of implementation code or documentation from models
MOFScript M2T
<
Doc
Code
MOFScript tool
Rule-based .m2t extension Allows various input models Code completion Transformations can also be represented as models (XMI)
MOFScript
Creating transformation
File New Other MOFScript File
1
2
MOFScript Editor
MOFScript Compiling
MOFScript Executing
Select input model
MOFScript Console
MOFScript language Transformation module – The definition of the transformation – Defined using keyword textmodule or texttransformation – It defines the input metamodels – The body of the transformation module contains the rules
Transformation Inheritance – Transformations can be extended using extends keyword – Rules are inherited and they can be used or overriden in the subtransformation
MOFScript language Imports – A transformation may import other transformations as libraries
Variables and properties (constants) – Variables and properties can be declared either globally or locally – They can be of any of the MOFScript types
MOFScript language Rules – Elements of a rule: • • • •
Context type -> metamodel type (optional) Return type (optional) Input parameters (optional) Body -> set of statements
– Types of rules: • Entry point rules – Defines where the execution starts -> main() – Defines for which metamodel element type it is executed – It is executed as many times as entry point type elements are in the input model
• Entry point rules without context type – It is executed only once
• Abstract rules – Abstract rules can be defined
– Rule Overriding • Rules can be overriden, either from imported transformation or within the same transformation – Different rule with the same name will be called depending on the context type.
MOFScript language Files – Declaration of an output device for text. – Declared using keyword file. – File name and extension are given as a parameter
If statements, Iterators, While statements, Select expressions, Printing, Logging, Expressions – Similar to other languages
Types – Strings, Integer, Real, Boolean, List, Hashtable, Object, Model • Many operations available for each type
Built-in functions – Many built-in functions are available in MOFScript: System functions and Output utility functions
Other features: – Reflection support, Java invocation, UML2 integration, Unprotected Blocks, Aspects, M2M transformation
MOFScript language For more detailed information:
– MOFScript Language Reference in Eclipse Help – Mofscript user guide: http://www.eclipse.org/gmt/mofscript/doc/MOFScript-User-
For more information: – http://www.eclipse.org/gmt/mofscript/doc/MOFScript-User-Guide.pdf –
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