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romanettandCopilot App
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## Summary Isolates a self-contained OPC UA source-generator bug fix, extracted from PR #4220 (which targets a different base branch) so it can merge independently against `master`. ## Fix: Emit node WriteMask from the model **Bug:** The `NodeState` source generator hardcoded `global::Opc.Ua.AttributeWriteMask.None` for both the `WriteMask` and `UserWriteMask` attribute replacements. As a result, attributes declared writable in a NodeSet2 model (for example `WriteMask=96`) were emitted as `None`, so writes to those attributes failed with `BadNotWritable`. **Change:** - `tools/Opc.Ua.SourceGeneration.Core/Generators/NodeStateGenerator.cs` - the common node replacements now emit `root.GetWriteMaskAsCode()` for the `WriteMask` and `UserWriteMask` tokens instead of the hardcoded `AttributeWriteMask.None`. - `tools/Opc.Ua.SourceGeneration.Core/Schema/ModelDesignExtensions.cs` - adds a `GetWriteMaskAsCode(this NodeDesign node)` helper that returns `global::Opc.Ua.AttributeWriteMask.None` when `WriteAccess == 0`, otherwise `(global::Opc.Ua.AttributeWriteMask){writeMask}`. ## Tests - `tests/Opc.Ua.SourceGeneration.Core.Tests/Schema/ModelDesignExtensionsTests.cs` - adds `[TestCase]`-driven coverage for `GetWriteMaskAsCode` across representative write-mask values plus a null-node test. ## Validation - `dotnet build tools\Opc.Ua.SourceGeneration.Core\Opc.Ua.SourceGeneration.Core.csproj -c Release` - 0 warnings, 0 errors. - `dotnet test tests\Opc.Ua.SourceGeneration.Core.Tests\Opc.Ua.SourceGeneration.Core.Tests.csproj -f net8.0 -c Release` - 3775 passed, 0 failed, 8 skipped. ## Note on the Views fix (excluded) A second generator fix (preserve forward same-namespace `Organizes` references to `ViewDesign` targets in `NodeSetToModelDesign`) was intended to ship here as well, but it was excluded. That fix compensates for behavior introduced by #4220 where imported Views are promoted to top-level `ViewDesign` nodes and their `ParentNodeId` is cleared. On `master` that promotion does not happen (Views remain children of their folder), so the fix and its test do not apply and cannot be cleanly isolated. It will land with #4220. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>