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Eclipse 4diac Weekly #67

Update on what development happened across the Eclipse 4diac project in the week from December 19 to December 26, 2025.

This week’s changes further refine usability and robustness across Eclipse 4diac. 4diac IDE received important fixes for scaling, positioning, ST editor stability, and internationalization, while 4diac FORTE extends byte-handling capabilities and improves OPC UA internals. Documentation got a section on OPC UA deployment.

Enhancements and Fixes in 4diac IDE

  • Maintenance release

    • Released 4diac IDE 3.0.1, focusing on bug fixes for the 3.0 release.

  • Data handling and libraries

    • Corrected byte assembly logic to properly assemble four bytes into a DWORD.
    • Added support for splitting a DWORD into individual bytes, improving low-level data manipulation utilities.
    • Updated copyright and versioning information for the affected functions.

  • Graphical editing and scaling

    • Fixed handling of zoom and scaling when adjusting bendpoints, improving behavior on HiDPI systems (#1978).
    • Corrected FB insert positioning to properly account for parent scaling.
    • Reworked SetPositionCommand to rely on correctly translated GEF constraints and better handle screen resolution.

  • Exporter and operations

    • Refactored the exporter infrastructure by removing the no-longer-needed abstract exporter.
    • Improved progress handling by using sub-monitors to properly react to cancelled operations.

  • ST editor stability and correctness

    • Fixed invalid generic type creation in the “missing variable” quickfix, falling back to compatible concrete types.
    • Prevented null pointer exceptions when handling incompatible types in the ST editor.

  • Internationalization and UI polish

    • Exported additional translatable strings and explicitly marked non-translatable ones.
    • Updated the splash screen to version 3.0.1.
    • Synced bundled documentation with the latest upstream fixes.

Enhancements and Fixes in 4diac FORTE

  • Function library enhancements

    • Added SPLIT_DWORD_INTO_BYTES to complement existing byte assembly functionality.
    • Corrected documentation for ASSELE_DWORD_FROM_BYTES to reflect the correct byte count.
    • Aligned internal logic and interface declarations for consistency.

  • OPC UA improvements

    • Cleaned up the query type implementation in the OPC UA manager for clearer and more robust behavior.

Enhancements and Fixes in 4diac Documentation

  • OPC UA deployment

    • Added new documentation describing OPC UA deployment.
    • Updated tutorials to reference the new OPC UA deployment documentation.

  • General fixes

    • Corrected a broken GitHub access token hyperlink.

Many thanks to all contributors for their work and their feedback!

Cheers,
The Eclipse 4diac Team

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