Optimize method culling graph and add stress test

[shai-almog]

Summary

• build and reuse a method usage index to avoid repeated full graph scans during unused method elimination
• decrement reference counts as methods and classes are removed to keep the optimizer fast
• add a stress test that exercises culling on a large synthetic call graph

Testing

• mvn -pl ByteCodeTranslator,tests -am test (fails in integration tests because clang is not available in the environment)

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Codex Task

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[github-actions]

✅ ByteCodeTranslator Quality Report

Test & Coverage

• ✅ Tests: 103 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.

[github-actions]

✅ Continuous Quality Report

Test & Coverage

• ✅ Tests: 2280 total, 0 failed, 0 skipped
• 📊 Line coverage: 52.71% [HTML preview] [Download]
  • Lowest covered classes
    • com.codename1.processing.TextEvaluator – 3.45%
    • com.codename1.charts.views.PieChart – 4.00%
    • com.codename1.charts.views.PieMapper – 4.88%
    • com.codename1.charts.views.ScatterChart – 5.32%
    • com.codename1.ui.list.GenericListCellRenderer$Monitor – 5.33%
    • com.codename1.ui.Display$EdtException – 5.56%
    • com.codename1.testing.AbstractTest – 6.05%
    • com.codename1.ui.Transform$ImmutableTransform – 6.06%
    • com.codename1.charts.views.DoughnutChart – 6.25%
    • com.codename1.charts.views.BubbleChart – 6.25%

Static Analysis

• ❌ SpotBugs: 992 findings (High: 90, Normal: 484, Low: 418) [HTML preview] [Download]
  • Top findings
    • High: CodenameOne/src/com/codename1/charts/util/ColorUtil.java:38 – Field isn't final but should be (rule: MS_SHOULD_BE_FINAL)
    • High: CodenameOne/src/com/codename1/charts/util/ColorUtil.java:30 – Field isn't final but should be (rule: MS_SHOULD_BE_FINAL)
    • High: CodenameOne/src/com/codename1/charts/util/ColorUtil.java:33 – Field isn't final but should be (rule: MS_SHOULD_BE_FINAL)
    • High: CodenameOne/src/com/codename1/charts/views/XYChart.java:128 – Call to equals() comparing different types (rule: EC_UNRELATED_TYPES)
    • High: CodenameOne/src/com/codename1/compat/java/util/Objects.java:51 – Redundant nullcheck of value known to be non-null (rule: RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE)
    • …and 987 more
• ❌ PMD: 2728 findings (P2: 1, P3: 650, P4: 2077) [HTML preview] [Download]
  • Top findings
    • P2: CodenameOne/src/com/codename1/ui/Display.java:1022 – Avoid using a branching statement as the last in a loop. (rule: AvoidBranchingStatementAsLastInLoop)
    • P3: CodenameOne/src/com/codename1/charts/views/LineChart.java:208 – These nested if statements could be combined (rule: CollapsibleIfStatements)
    • P3: CodenameOne/src/com/codename1/facebook/FacebookRESTService.java:76 – Avoid unused constructor parameters such as 'token'. (rule: UnusedFormalParameter)
    • P3: CodenameOne/src/com/codename1/impl/CodenameOneImplementation.java:8443 – These nested if statements could be combined (rule: CollapsibleIfStatements)
    • P3: CodenameOne/src/com/codename1/impl/FullScreenAdService.java:103 – These nested if statements could be combined (rule: CollapsibleIfStatements)
    • …and 2723 more
• ❌ Checkstyle: 219517 findings (Warning: 219517) [HTML preview] [Download]
  • Top findings
    • Warning: CodenameOne/src/com/codename1/db/ThreadSafeDatabase.java:30:1 – Extra separation in import group before 'java.io.IOException' (rule: CustomImportOrderCheck)
    • Warning: CodenameOne/src/com/codename1/db/ThreadSafeDatabase.java:32 – First sentence of Javadoc is missing an ending period. (rule: SummaryJavadocCheck)
    • Warning: CodenameOne/src/com/codename1/db/ThreadSafeDatabase.java:36 – Line is longer than 100 characters (found 143). (rule: LineLengthCheck)
    • Warning: CodenameOne/src/com/codename1/db/ThreadSafeDatabase.java:39:5 – 'member def modifier' has incorrect indentation level 4, expected level should be 2. (rule: IndentationCheck)
    • Warning: CodenameOne/src/com/codename1/db/ThreadSafeDatabase.java:40:5 – 'member def modifier' has incorrect indentation level 4, expected level should be 2. (rule: IndentationCheck)
    • …and 219512 more

Generated automatically by the PR CI workflow.