Groovy-Eclipse is a tool that integrates the Groovy programming language within the Eclipse IDE, enhancing Java development with groovy's dynamic features. The recent release, version 2.0.1, aims for deep integration with Java Development Tools (JDT), providing editing support, debugging capabilities, and type inferencing. This integration enables seamless workflows between Java and Groovy, optimizing coding experience and enhancing the development of dynamic applications.

1. Getting Groovy with Eclipse: Next generation tool support for dynamic languages Andrew Eisenberg SpringSource a division of VMWare

2. What is Groovy-Eclipse? Eclipse tool support for the Groovy programming language Recent release of Groovy-Eclipse 2.0.1 Two Goals: Deep integration with Java Development Tools (JDT) Editing support for Groovy's dynamicism

3. What is Groovy? This is Java: public class Main { public static void main(String[] args) { System.out.println( “Hello, EclipseCon.” ); } }

4. What is Groovy? This is Groovy: public class Main { public static void main(String[] args) { System.out.println( “Hello, EclipseCon.” ); } }

5. What is Groovy? This is really Groovy: print “Hello, EclipseCon.” Groovy is a dynamically typed JVM language Builds upon the strengths of Java syntax, libraries, runtime, ... Supports extra features scripting, meta-programming, DSLs, …

6. Deep integration with JDT Editing support for Groovy's dynamicism Groovy-Eclipse JDT compiler integration (Demo 1) Debug support (Demo 2) Groovy type inferencing (Demo 3)

7. What is deep integration with JDT? Optimize Edit / Save / Compile / Test Same level of quality: Java <-> Groovy Similar feature set where makes sense Seamless Cross-referencing

8. How to achieve Deep integration Extended JDT compiler Compiles both Java and Groovy No need for stub generation Compiler output not just class files Abstract Syntax Tree (AST) Java model

9. Demo 1 JDT – Groovy Compiler integration

10. Debug support Much like as in Java: launching applications, tests breakpoints stepping variables view hot swap (new!) display view (work in progress) But, also: launching scripts closure support filter uninteresting stack frames

11. Demo 2 Debugging – integration with JDT

12. Inferencing engine guess type information statically def x x = (-1).abs() x = “foo” x.abs() IDE support for Groovy's dynamicism x instanceof String x instanceof Integer MissingPropertyException!!!

13. Inferencing Engine is extensible Custom DSLs can plug in (e.g., Grails) Used for many parts of the UI: Content Assist Navigation Search Underlining unknown references

14. Demo 3 Type inferencing provides IDE support for groovy dynamicism

15. Groovy-Eclipse Deep integration with JDT Editor Compiler Debugger Support for Groovy's dynamicism Type inferencing

16. Eclipse is now Groovy! Groovy-Eclipse: http://groovy.codehaus.org/Eclipse+Plugin Andrew Eisenberg [email_address] Thank you!

17. JDT Compiler integration .groovy/.java sources Generate .class files or Java model Generate .class files or Java model Generate Select parser Eclipse parser .java files Groovy parser .groovy files Parse Write .class files or cache Java model Resolve references across all files Resolve For IDE operations (Search, content assist...)