![Iceberg
• New tool suite to handle modern VCS (Git for now) in Pharo.
• More than just putting files in Git!
• Central to the development of projects.
• The key and first enhancements:
• [ Done ] cherry picking
• Multiple directories support
• Better new development process support](https://image.slidesharecdn.com/2017-esugpharo70-170906120617/85/A-Taste-of-Pharo-7-0-3-320.jpg)
A Taste of Pharo 7.0
- 1. Pharo 70/80 kind of Roadmap: The key challenges and first achievements S. Ducasse RMoD Clément Béra Pharo Consortium
- 2. Roadmap • Tools • Cleaning and Improvements • Language infrastructure • System enhancements • VMs
- 3. Iceberg • New tool suite to handle modern VCS (Git for now) in Pharo. • More than just putting files in Git! • Central to the development of projects. • The key and first enhancements: • [ Done ] cherry picking • Multiple directories support • Better new development process support
- 4. Iceberg • Paid by the consortium • libgit2
- 5. Iceberg • Potentially for • Fossil • Mercurial
- 8. Nautilus
- 9. Calypso
- 10. Calypso & its submarines
- 11. Calypso • Basis for Remote Browsing • Fully extensible • No ifs and extensible • Developed by D. Kudriashov for TelePharo (PharmIDE) • Thanks A. Plantec for giving us the name
- 12. Calypso • Multiple panes • Multiple method definitions • Incomplete method definitions • Scoping…
- 13. Calypso • mulitple panes • multiple method definitions • incomplete method definitions • scoping…
- 15. Bootstrap for REAL • Pharo 70alpha starts from nothing :) • There is an EMPTY Image • Creates a bootstrapped kernel • Loads the compiler! • Loads Metacello! • Loads the rest
- 16. Hermes: Binary loader a code loader that does not require the compiler to be loaded. It is used to speed up the bootstrap.
- 17. Beacon Logger • Powerful announcement-based logger • Clean the left over of previous logging • Remove many of the transcript show:
- 18. GTInspector Enh • Refreshing back in place • Another pass at pane
- 19. Cargo/Metacello • Cargo: a new package manager. • It supports the expression of dependencies between packages. • We are currently validating that it can support conditional loading (platform) and building new tooling to express and validate data.
- 20. Refactoring 2 • Refactoring 2 is an improved version of Refactorings developed by Gustavos Santos • Should used to replace the existing one
- 21. Taking advantage of dependency analyser Used before committing to warn the user when a new dependency is introduced in a package.
- 22. Roadmap • Tools • Cleaning and Improvements • Language infrastructure • System enhancements • VMs
- 23. Cleaning • Nautilus retirement • Remove old text editor • Remove Komitter: Iceberg already supports cherrypicking • Remove system categorizer: old system categorizer is not used anymore
- 24. Cleaning • Old compiler removal: The old compiler should now get unloaded from Pharo. • The old compiler should be moved to an external package and make sure that it can be reloaded. • Encoders are split and repackaged
- 25. Old Inspector • Remove the eyeInspector framework • But introduce a minimal fallback inspector • This inspector should work without Spec or any frameworks
- 26. Clean behavior API • Number of methods in the core Behavior, ClassDescription and Class requires some analysis and cleaning
- 27. Kernel modularisation effort • Continuous • Kind of our DNA :)
- 28. Roadmap • Tools • Cleaning and Improvements • Language infrastructure • System enhancements • VMs
- 29. About classes
- 30. Class definition explosion • subclass:, variableSubclass:, variableByte.. variableWord, weak: • uses: • layout: • tag: • immediate:, ephemeron • category: • package: • slot: • instanceVariableNames:, classVariableNames:
- 31. Need a fluid API • Only specify what is used! • No empty classVariableNames: ‘’ • Handling combinatorial explosion Class <<< #Box vars: { #width . #height }; package: #MyPackage.
- 32. Possible Designs Class { superclass: #MySuperclass; uses: #MyTrait; vars: { #a. #b }; classVars: { #A. #B }; package: #MyPackage; tags: #(Core). } Class <<< #MyClass superclass: #MySuperclas; uses: #MyTrait; vars: { #a. #b }; classVars: { #A. #B }; package: #MyPackage; tags: #(Core)
- 33. Need a class **definition** • a.k.a. AST • traits, slots, kinds…. • Can be manipulated • Support for Smart Suggestions • Need to be able to have **undefined** classes • Important for modules!
- 34. Working on a “ClassParser” + Nodes • Can handle variations, backward compatibles…. • Support for smart suggestion in class definition • Avoid ‘*subclass:*’ matches: str
- 35. Undefined classes • How to support loading and managing classes with an unknown superclass? • Important to load broken code • Important for Modules in live environment
- 36. Undefined classes • Pendant of Undeclared • Read the paper :) • Support for Module systems
- 37. Opal • Warnings into real objects • Another pass on the API
- 38. Updater • Atomic loader P. Tesone • Modular class builder
- 39. Ring2 • Ring: modeling a program • Pavel Krivanek rewrote Ring • Infrastructure to build tools to manipulate kernels
- 40. Roadmap • Tools • Cleaning and Improvements • Language infrastructure • System enhancements • VMs
- 41. CommandLine • Clap new command line library • Scripting :) • Headless :)
- 42. Cleaning Streams • Make sure that the system does not use the old streams but the FileStream and ZincDecorator • Split Stream package
- 43. Theme/widgets • New theme from the beginning • Better themes/palettes support • Better and nicer Tabs. Tabs design should be revisited.
- 44. Use OSWindow • Remove the logic of the windowing/shortcut from the VM should be continued • OSWindow should be used instead
- 45. Killing Freetype Plugins • Current freetype plugin is the source of many bugs and problems • Check work of Raffaillac to use UFFI to do direct call to openGL
- 46. Roadmap • Tools • Cleaning and Improvements • Language infrastructure • System enhancements • VMs
- 47. 64 bits • Mac and Linux 64 bits VMs stable since Pharo 6 • Since June 2017, Windows 64 bits support • 64 bits as the new standard • Stabilise each part of Pharo dependent • Default releases in 64 bits Thanks to Eliot Miranda and Nicolas Cellier
- 48. Headless VM • Merge headless VM from Ronie Salgado’s branch • True headless mode (not with a hidden window) • Enable/Ease future work (embeddable VM, etc.)
- 49. Embeddable VM (P8?) • VM embedded in external applications • The application can access objects
- 50. Idle / Event-driven VM (P8?) • Increase VM responsiveness • Avoid couple per-cent cpu time wasted by active waiting loop when Pharo does nothing
- 51. Android VM (P8?) Integration of the Android VM build and tests in the integration setup. Future work with Event-driven VM
- 52. Threaded FFI All FFI calls should be non-blocking
- 53. Large heaps Incremental GC: Avoiding long pauses GC tuning API
- 54. Retina High resolution display Retina resolution display
- 55. Sista preview • First version integrated • 1.5x performance boost • Readable code as fast as performant code • Optional VM: specific constraints • Partial IDE support, literal mutability support, …
- 56. Improved block closure • Provides support for byte code compiler copying and clean block optimisations • Reduce complexity of some parts of the JIT Some work remains in IDE support.
- 57. Improved bytecode set • Eases bytecode decoding • Lifts compiled code limitations (size of jumps, etc.) • Required for the Sista support Some work remains in debugging support.
- 58. Read-Only objects • Work in Pharo 6 • In-image support needs to be improved (fall- back code of primitives, etc.) • Some polishing needs to be done (primitive error code not always correct, etc.)
- 59. Literal immutability • Removes hard-to-find errors • Enable compiler optimisations An analysis of the image usage of literal (string mutation, Large Integer mutation) is needed
- 60. Pharo 70 is exciting We are excited by the possibilities You can help, contribute and have fun with us