#108 Add PreventEnumerableCount MappaSettings option - #285
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sanelli merged 3 commits intoJul 26, 2026
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Introduce the BooleanSetting surface and bump to 10.2.0-alpha.23 so the generator can consume it. Co-authored-by: Cursor <cursoragent@cursor.com>
Wire the setting through Mappa.Generator, emit growable List buffers instead of Enumerable.Count for single-enumeration sources, add integration and attribute parsing tests, and bump to 10.2.0-alpha.24. Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Code coverageCompared against the latest published coverage history from the code coverage gist.
No coverage metric dropped by more than 1 percentage point(s) versus baseline. |
sanelli
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108-allow-preventing-using-enumerbalecountthis-t-values-when-targeting-arraysspanmemory
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July 26, 2026 12:22
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Summary
MappaSettings.PreventEnumerableCount(BooleanSetting, editorconfigmappa.preventenumerablecount) so mappings from sources withoutCount/Lengthto fixed-size targets (T[],Span<T>,Memory<T>, and read-only variants) can avoidEnumerable.Countand enumerate once via a growableList<T>buffer.CollectionToCollectionMapStrategyBuilder, with integration tests (syntax-tree assertions), samples/AOT runner, and docs.10.2.0-alpha.24(after Mappa and generator changes).Test plan
EnumerableConcreteType.Array, editorconfig, and class/method overridesPreventEnumerableCount.\Scripts\RunTestsAndReportCoverage.ps1— line/branch/method ≥ baseline (solution 98.4%/90.6%/100%; Generator branch improved to 90.6%)Closes #108