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Improved IO performance of ByteCodeTranslator by implementing Smart Writes (checking file content before writing) and using Buffered IO streams. This addresses the user's request for "aggressive caching and improving IO usage". Also fixed a potential data corruption issue in copy by ensuring flush, and standardized on UTF-8 for output.


PR created automatically by Jules for task 9206115641488061974 started by @shai-almog

- Implemented `writeIfChanged` in `Parser.java` to skip writing files if content is identical (Smart Writes).
- Added `BufferedInputStream` and `BufferedOutputStream` wrappers in `ByteCodeTranslator.java` and `Parser.java` to improve IO performance.
- Added explicit flush in `ByteCodeTranslator.copy` to prevent data loss.
- Used UTF-8 encoding explicitly for generated files.
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github-actions bot commented Dec 17, 2025

✅ ByteCodeTranslator Quality Report

Test & Coverage

  • Tests: 102 total, 0 failed, 0 skipped
  • ⚠️ Coverage report not generated.

Static Analysis

  • ✅ SpotBugs: no findings (report was not generated by the build).
  • ⚠️ PMD report not generated.
  • ⚠️ Checkstyle report not generated.

Generated automatically by the PR CI workflow.

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github-actions bot commented Dec 17, 2025

✅ Continuous Quality Report

Test & Coverage

Static Analysis

Generated automatically by the PR CI workflow.

- Implemented `Cache` class to skip writing generated files if their MD5 hash matches (Smart Writes).
- Updated `Parser.java` to use `Cache` and NIO `Files.write` for file generation.
- Updated `ByteCodeTranslator.java` to use NIO `Files.copy` and `Files.write` for efficient file copying and modification.
- Standardized on UTF-8 encoding for all generated files.
- Improved IO performance by reducing unnecessary writes and using buffered/NIO operations.
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shai-almog commented Dec 17, 2025

iOS screenshot updates

Compared 30 screenshots: 27 matched, 2 updated, 1 missing reference.

  • BrowserComponent — updated screenshot. Screenshot differs (1206x2622 px, bit depth 8).

    BrowserComponent
    Preview info: Preview provided by instrumentation.
    Full-resolution PNG saved as BrowserComponent.png in workflow artifacts.

  • graphics-draw-gradient — updated screenshot. Screenshot differs (1206x2622 px, bit depth 8).

    graphics-draw-gradient
    Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 844x1835.
    Full-resolution PNG saved as graphics-draw-gradient.png in workflow artifacts.

  • graphics-draw-round-rect — missing reference. Reference screenshot missing at /Users/runner/work/CodenameOne/CodenameOne/scripts/ios/screenshots/graphics-draw-round-rect.png.

    graphics-draw-round-rect
    Preview info: JPEG preview quality 10; JPEG preview quality 10; downscaled to 844x1835.
    Full-resolution PNG saved as graphics-draw-round-rect.png in workflow artifacts.

Benchmark Results

  • VM Translation Time: 330 seconds
  • Compilation Time: 71 seconds

@shai-almog shai-almog marked this pull request as ready for review December 17, 2025 12:24
@shai-almog shai-almog merged commit 3c3a5fe into master Dec 17, 2025
9 checks passed
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shai-almog added a commit that referenced this pull request Dec 17, 2025
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2 participants