Generator capture model: the full projection (phase 2 of 2) - #188
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SuccessSourceState.ResultType (ITypeSymbol) becomes RowPlan: everything row-factory emission reads - member db-names/types/reader-methods, constructor/factory choice, deferred-construction facts, the inbuilt- helper decision, query-column mapping - projected at parse. RowReaderState de-dupes on the plan's structural equality instead of the old symbol+columns key, and AppendReader/GetRowParser/Execute<T> consume plan strings. One cached symbol remains in the whole model: ParameterType. Byte-identical: goldens unchanged (net10/net48), harness hash equal (f8d3a61f).
…gone SuccessSourceState.ParameterType (ITypeSymbol) becomes ParamPlan: everything command-factory emission reads - member db-types/sizes/ directions with the Add-mode sizing decisions precomputed, DbString and cancellation facts, the anonymous-type shape witness (built at parse), the multi-exec element plan and cast - projected at parse time. CommandFactoryState de-dupes on plan equality (the systemObject fallback becomes a plan built once per Generate), and the whole cached model is now plain data. The states also gain structural equality, which the node-level incremental cache needs (reference equality re-ran downstream on every edit even with plain fields); ModelShapeTests now covers the SourceState family and requires equality on nested model types instead of skipping them. Byte-identical: goldens unchanged (net10/net48), harness hash equal (f8d3a61f).
The interceptor generator's Generate combined the raw CompilationProvider, re-running the whole output step on every keystroke. Its compilation uses are now projected into an equatable InterceptorEnvironment via Select: AllowUnsafe, assembly name, has-InterceptsLocationAttribute, the DbCommand special-types sweep (pre-filtered to the providers needing per-command setup), the module-level [CommandFactory<T>] resolution, and the system-object fallback plan for CommandFactoryState. The analyzer-bridge path builds the same environment from its CompilationAnalysisContext. GenerateState.GetInterceptorFilePath (the last Compilation hanger-on) is gone - its projection moved to parse in 3a. This completes the phase-2 exit criteria: plain equatable cached model, no CompilationProvider into the output step, shape test in CI, output byte-identical (goldens net10/net48; harness hash f8d3a61f throughout).
Three cases, each asserting on the driver's tracked output steps: - an edit in an unrelated file leaves every output step Cached/Unchanged (on the old pipeline this failed by construction: the raw Compilation fed the output step, so any edit re-ran it); - an edit in the *same file* below the call-site also leaves the output cached - Parse re-runs and produces fresh state instances, so this one specifically needs the states' structural equality; - a real edit (a new bindable member on the row type) re-runs the output and changes the generated text. Note the SQL literal is deliberately not used for this: the SQL flows through as a runtime argument, so changing it does not change the generated shape. Also asserts the generated text is byte-identical across cached re-runs.
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…190) The member-exists check returned true for a public *readonly* field and false for a mutable one - inverted. It never fired in anger because real ADO.NET command types expose these knobs (BindByName etc) as properties, which were checked correctly; but a [CommandProperty] naming a mutable public field was wrongly rejected with DAP033, and naming a readonly one passed validation and then emitted an assignment that cannot compile (CS0191) in the consumer's build. Deliberately excluded from the capture-model rework (which was byte-identical by contract) and fixed separately here. The new tests fail without the fix - the mutable/readonly field cases both flip.
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* Start the Dapper/Dapper.AOT parity accounting under notes/ The goal on record: enable Dapper.AOT in the Dapper test suite, announce types via attributes, and have it swallow everything - AOT-clean. - parity.md: the feature table, with impact/complexity per gap (several 'gaps' score zero because the concept doesn't exist under AOT, e.g. the ref-emit plan cache) - tokens.md: @ids expansion, {=literal}, ?foo? pseudo-positional, param filtering - type-vs-generic.md: the announced-types design space for Type-based APIs - test-suite-audit.md: the Dapper tests as acceptance corpus, sequenced * GetTypeDeserializer is valid API, not cache plumbing With announced types it's the same dispatch map (boxed materializer), and its generic strengthening already exists as GetRowParser<T>. The real hole is the write side: CreateParamInfoGenerator has no generic counterpart - recorded the GetParameterBinder<T> proposal, and the question of blessing CommandFactory<T>/RowFactory<T> as the supported surface. ReadChar and friends are plain AOT-safe statics, nothing to do. * Scope the accounting to the public API and observable behavior PublicAPI.Shipped.txt is the checklist; the contract is what reaches the provider and what comes back, never Dapper's internals. Cuts both ways: the dynamic row needs behavioral fidelity only (the type is internal), while the public infrastructure statics ARE in scope because extenders call them. * Record the decision: internals-asserting tests get adjusted, not maintained * New work item: warn (new DAP id) on use of the has-no-meaning APIs Plan-cache surface, CommandFlags.NoCache, possibly ConnectionStringComparer: supported-and-meaningless under AOT, which is a different statement to DAP001's unsupported-but-meaningful. Warning, not error - the code runs. * Measurement caveat: build-time DAP counts are an upper bound Some failure modes are silent until executed - handled means intercepted, not correct. Only the DB-backed test run catches silent divergence. * First harness baseline: 'handled 396 of 396' alongside 96 compile errors Two root-cause generator bugs (array-of-anonymous parameter emits the display string and wrecks the parse; inaccessible row types are emitted rather than refused), plus two scorecard honesty problems (the denominator excludes unattempted APIs; handled does not mean compiles) and a zero- analyzer-diagnostics anomaly to re-check once the compile is clean. * Generator audit: the capture model snapshots Roslyn nodes; fix first Both generators' cached SourceState hold IMethodSymbol/ITypeSymbol/ Location (MemberMap even holds an IOperation), and the pipeline combines the raw CompilationProvider into the source output - so it behaves as a full-recompute generator with a memory leak. Recorded as a sequencing gate ahead of the gap-closing features, with the fix shape that worked for protobuf-net (plain equatable model, span-based locations, separate diagnostics branch, shape-enforcing test). * Record the agreed plan: gap table, then generator model, then features The line that resolves the phase-1/2 tension: nothing that adds parse-time state lands before the model rework completes; refusals and scorecard fixes are allowed ahead of it, which is what lets phase 1 see. * Round 2 numbers, and log the modern-interceptor-syntax work item * Round 3: the suite compiles with AOT enabled (4 fix PRs + 2 severity downgrades) * Scoreboard: all three TFM legs compile; local SQL Server available * Work item: [UnsafeAccessor] may lift the accessibility refusals (net8+) * Round 4: the honest scorecard says 53%, not 100% * Harvest the skip breakdown; flag the DAP016 corpus-shape decision * Round 5: first behavioral run - 84 failures, every one compiled clean * Note that aot-harness is deliberately local-only * Phase 2 log: approach and increments * Phase 2 log: increment 1 done * Phase 2 log: 3a done * Phase 2 log: 3b done * Phase 2 log: 3c-i done; two cached symbols remain * Phase 2 log: result-side plan done; one symbol left * Phase 2 log: cached model fully plain; only increment 4 remains * Phase 2 log: complete - PRs #187 + #188 * Phase 2 log: caching tests landed * Phase 2 log: readonly-field quirk fixed (#190) * Round 6: DAP051 + restructure takes interception to 68.1% * Round 6b: 612/760 behavioral; failures track interception growth honestly * DynamicParameters design: delegate to the bag; needs one small Dapper API * Round 7: DynamicParameters at 73.5%; First-pipeline drain divergence found * Round 7b: 612/762; every failure class maps to a planned feature * Interceptor-syntax migration: soft-target requirement recorded * Tokens: runtime-SQL design - per-factory memoized role scan * Record the feature-detection rule (DAP052) in the design note * Round 8: CommandBehavior parity fix (PR #196) * Round 8b: 616/762, suite loop 17s * Round 9: list expansion lands (PR #197), 638/762 * Round 10: custom parameters + the two bugs they uncovered, 658/793 * Round 11: dynamic-record fidelity, 672/793 * Sync with main; point parity rows at their open PRs The table lands on main via #186; from here each feature PR flips its own cells, so the table and the merge history cannot drift apart. Rows with an open PR say so, and the flip to a settled status is that PR's job.
This was referenced Aug 25, 2026
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Stacked on #187; completes the capture-model rework. The two remaining cached symbols become plans, and the output step stops taking the raw
Compilation:RowPlan/RowMember: everything row-factory emission reads — member db-names/types/reader-methods, constructor/factory choice, deferred-construction facts, the inbuilt-helper decision, query-column mapping — projected at parse.RowReaderStatede-dupes on plan equality instead of the symbol+columns key.ParamPlan/ParamMember: the command-factory side — member db-types with the Add-mode sizing decisions precomputed, directions, DbString/cancellation/row-count facts, the anonymous-type shape witness (built at parse), the multi-exec element plan and cast.CommandFactoryStatekeys on plan equality; itssystemObjectfallback becomes a plan.ModelShapeTestscovers theSourceStatefamily and requires equality on nested model types.InterceptorEnvironment: the output step's compilation facts (AllowUnsafe, assembly name,InterceptsLocationAttributeavailability, the DbCommand special-types sweep, module-level[CommandFactory<T>], the object fallback plan) projected viaSelect, so edits that don't change any of them no longer re-run generation. The analyzer-bridge path builds the same environment.Zero Roslyn objects remain in the cached model. Byte-identical output verified at every increment, two ways: all golden fixtures unchanged (net10/net48), and the Dapper test suite's full generated file (725 call-sites) hashes identical (
f8d3a61f) before and after the entire rework.