AST Transformations: Groovy’s best kept secret by Andres Almiray
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The document discusses AST (Abstract Syntax Tree) transformations in Groovy, which allow modifying code structure at compile time. It covers the standard AST transformations included in Groovy, how to build local and global AST transformations, and additional tools for working with ASTs. The speaker is an experienced Java and Groovy developer who is a Groovy committer and project lead for the Griffon framework.
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AST Transformations: Groovy’s best kept secret by Andres Almiray
- 1. AST TRANSFORMATIONS: GROOVY’S BEST KEPT SECRET ANDRES ALMIRAY @AALMIRAY
- 2. ABOUT THE SPEAKER Java developer since the beginning True believer in Open Source Groovy committer since 2007 Project lead of the Griffon framework Currently working for
- 3. AGENDA AST, How did we get here? AST Transformations Building your own AST
- 17. STANDARD GROOVY DISTRO INCLUDES: * @EqualsAndHashCode * @ToString * @TupleConstructor * @Canonical * @InheritConstructors * @IndexedProperty * @Lazy * @PackageScope * @NotYetImplemented * @AutoClone * @AutoExternalize * @Synchronized * @Field * @Grab * @GrabResolver * @CompileStatic * @TypeChecked * @ASTTest
- 18. STANDARD GROOVY DISTRO INCLUDES: * @Bindable * @Vetoable * @ListenerList * @ConditionalInterrupt * @ThreadInterrupt * @TimedInterrupt * @WithReadLock * @WithWriteLock * @Newify * @Log * @Slf4j * @Log4j * @Commons * @Singleton * @Immutable * @Delegate * @Category * @Mixin
- 19. GROOVY ECOSYSTEM BRINGS: * @ByteCode * @Scalify * GContracts * @Invariant * @Requires * @Ensures * Grails * @Entity * @TestFor * Griffon * @EventPublisher * @Threading * @PropertyListener * @MVCAware * @MessageSourceAware * @ResourceResolverAware * @ResourcesAware * @ThreadingAware
- 20. GLOBALAST TRANSFORMATIONS Groovy – Grab Grails – GORM API Griffon – Threading injection Spock – the whole shebang
- 23. LOCALAST TRANSFORMATION 1. Define an @interface • Easy peasy … right? 2. Define AST implementation • huh …… 3. Profit!
- 24. GLOBALAST TRANSFORMATION 1. Add AST implementation entry to • META-INF/services/ org.codehaus.groovy.transform.ASTTransformation 2. Define AST implementation • ??? !!! ??? !!! 3. Profit!
- 36. ADDITIONAL TOOLS AST browser AST Builder
- 40. DOCS? DON’T MIND IF I DO https://github.com/melix/ast-workshop Setup gradle 1.6 (or use gradlew) Browse docs/gen/workshop.html