2 Commits

Author	SHA1	Message	Date
romanett	9b034f8291	Enable nullable reference types centrally; migrate all unset and annotations-only projects (#4700) ... # Description Nullable reference types are now enabled once, in `common.props`, and every project in the repository builds warning-clean with them. **Configuration** - `<Nullable>enable</Nullable>` lives in `common.props`. All per-project `<Nullable>` settings are removed: 178 project files (enable, annotations, and the `disable` in the three Aot test projects). - 419 per-file `#nullable enable`/`restore` directives and the 4 `#nullable disable` directives are removed. - Kept on purpose: - The 5 `<auto-generated>` schema files (`UANodeSet.cs`, `UA Type Dictionary.cs`, `OPCBinarySchema.cs`, `SecuredApplication.cs`, `PInvokeHelper.cs`) keep `#nullable enable`. The compiler ignores the project setting in generated code, so the directive is required there. - `tests/Opc.Ua.Interop.LegacyPeer` keeps `disable`. It builds against the 1.5.378 packages and does not import the repository props. - `docs/DeveloperGuide.md` and `.github/copilot-instructions.md` now describe the central setting. **Migration** (the 43 unset and 13 annotations-only projects, roughly 10k diagnostics) - **Production code: annotated at the declarations.** Covers `tools/Opc.Ua.SourceGeneration.Core`, `src/Opc.Ua.Lds.Server` and the LDS sample. - Members, parameters and returns are nullable where null actually flows. - Null-check helpers carry `[NotNullWhen]` (`IsNull`, `IsValidXmlName`, `IsMethodTypeDesign`). - `CoreUtils.Format`, `Utils.Format`, `ITemplateWriter.WriteLine` take `params object?[]`. `Template.AddReplacement` takes `string?` (rendering already skips null replacements). - `IRegisteredServerStore.RegisterAsync` returns `Task<RegistrationEntry?>`: it returns null when a registration is removed. - Dereferences backed by an invariant (for example, the validated model) use `!`, so runtime behaviour is unchanged. - **Behavioural changes in production code** (small, deliberate): - `NodeSetToModelDesign` throws `InvalidOperationException` when the file is not a NodeSet. Before, it threw a NullReferenceException on the next line. - `ModelDesignValidator` starts its lookup tables empty instead of null. A redundant `if (m_nodes == null) return;` guard is gone. - **Test code: minimal annotations.** - `?` on values that can be null, `!` where the test asserts non-null. - `= null!` for fixture members assigned in SetUp. - `TryGetStructure<T>(out T? x)` where the inferred `T?` broke the `IEncodeable` constraint. - A few redundant `== null` checks on structs (`NodeId`, `ArrayOf<T>`) folded into the adjacent `IsNull`/`Count` checks. **Notes for reviewers** - The diff is large (~1,500 files) but almost entirely mechanical: `?`, `!` and directive removal. The non-annotation changes are listed above. - Known follow-up, not done here: `IModelDesign.Namespaces/TargetNamespace/NamespaceUris` stay non-nullable even though the validator returns null before it loads a dictionary. Making them nullable would ripple through every generator call site. ## Related Issues - Fixes #4439 ## Checklist - [ ] I have signed the [CLA](https://opcfoundation.org/license/cla/ContributorLicenseAgreementv1.0.pdf) and read the [CONTRIBUTING](https://github.com/OPCFoundation/UA-.NETStandard/blob/master/CONTRIBUTING.md) doc. - [ ] I have added tests that prove my fix is effective or that my feature works and increased code coverage. - [x] I have added all necessary documentation. - [x] I have verified that my changes do not introduce (new) build or analyzer warnings. - [ ] I ran **all** tests locally using the **UA.slnx** solution against at least .net **framework** and .net **10**, and all passed. - [ ] I fixed **all** failing and flaky tests in the CI pipelines and **all** CodeQL warnings. - [ ] I have addressed **all** PR feedback received. The "no new warnings" box covers net10.0 and net48: full non-incremental builds of `UA.slnx`, `tools/SourceGeneration.slnx`, `tools/MigrationAnalyzer.slnx` and the Aot test projects finished with 0 warnings and 0 errors under the repository's warnings-as-errors settings. net9.0 and net8.0 also had no nullable diagnostics, but they were not rebuilt after the final fixes. Tests have not been run locally yet. 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>	2026-10-08 08:48:13 +02:00
Klaus Landsdorf	dadd609ec0	Scales: the OPC 40200 companion SDK with the OPC 30050 PackML model (#4580) ... > Tracking issue #4576. #4577, #4578 and #4579 are merged, so this branch is > rebased onto `master` and contains only the Scales and PackML commits. ## Summary Last of the four PRs of #4576. Adds OPC 40200 Weighing Technology 2.00 as a model package plus a server and a client SDK, and the OPC 30050 PackML model it composes. | Package | Content | |---|---| | `Opc.Ua.PackML` | OPC 30050 PackML 1.01, plus `PackMLStateMachineController`, which drives a base state machine together with its nested machine and execute state machines (activation and deactivation of the sub-state machines, the PackML methods with an `Executable` attribute that follows the state, acting states left automatically or by the equipment) | | `Opc.Ua.Scales` | OPC 40200 2.00 (`http://opcfoundation.org/UA/Scales/V2/`), generated from the unmodified UA-Nodeset publication, plus the contracts client and server share | | `Opc.Ua.Scales.Server` | `AddScales()` / `ConfigureScales(...)`; all fourteen scale kinds and scale systems below `DeviceSet` and `Machines`; a runtime that does the weighing arithmetic (ranges, rounding to d or e, zero band, overload/underload, zero, tare, preset tare, registration), production presets with DI locking, statistics, recipes and recipe files, Annex C events and alarms over a `HasNotifier` hierarchy, and the methods of every scale type | | `Opc.Ua.Scales.Client` | discovery, weight reads and streaming, zero/tare/register, products, PackML state and commands, type-specific methods, events and alarms, snapshots | `docs/Scales.md` includes a conformance matrix against the 21 OPC 40200 server facets with test evidence, the places where the specification and the NodeSet disagree, and known limitations. ## Review follow-ups Separate commits after the docs/samples commit, each with a test that fails without it where the defect can be observed. - Copilot review: `CurrentProductsChanged` fires only when the set of current products changes; the new public collection APIs (`ScalesServerOptions.AdditionalNamespaceUris`, `ScaleNamespaceIndices.SearchOrder`, `ScalesModel.AllKinds`) are `ArrayOf<T>`. - Own review with the rubric in `.github/copilot-instructions.md`: - PackML raises `StateChanged` after its lock is released (queued, in order), reads `StartParameters` under the lock, and reports the handler's status when an acting state cannot complete. - Scales: concurrent first creations share one runtime (the lock service refused a second attach); two creations of the same name cannot both publish; a removed product id stays reserved until its node is gone; the zone, target-count and vehicle handlers change products under the preset lock; the product factory and `configure` delegate run outside it; the recipe upload reads `ActiveRecipe` under the lock; resetting the statistics also resets the tolerance percentage. - The client lets a failed browse call propagate instead of reading it as "no children". ## Testing - `tests/Opc.Ua.Scales.Tests`: 115 tests on net8 and net10 and with the netstandard2.1 libraries, including the PackML runtime; the client/server tests connect a real session over `opc.tcp` to a hosted `ScalesNodeManager`. - `UA.slnx` builds for net472, net48, netstandard2.0/2.1 and net8/9/10 with SDK 10.0.401 and no new warnings. - Changed-line coverage of this layer (`check-coverage.ps1`): 94.59 % (4585 of 4847 changed lines, against `master`). - Fork CI, full PR matrix incl. macOS: in progress, [run 36676067489](https://github.com/biancode/UA-.NETStandard/actions/runs/36676067489); CodeQL: in progress, [run 36676070427](https://github.com/biancode/UA-.NETStandard/actions/runs/36676070427). - On the current `master` (with Pumps merged), `UA.slnx` builds for every target framework and the Scales and Pumps tests pass. - Beyond the in-repo tests the implementation has been validated end to end against a separate, non-public OPC UA client and server. ## Reviewing Commits: PackML → Scales model → server → client → tests → docs and samples → review follow-ups.	2026-09-30 10:54:48 +02:00