feat(pipeline): RegisterCollectedEmitter + IsTypeAccessible + IsToggleEnabled

[ANcpLua]

Summary

Promotes three patterns observed across consuming generator codebases (qyl, MAF agent-framework, LoggerMessageNPlus2) into shared by-the-book helpers, collapsing typical per-concern generator boilerplate to a single declarative line.

• IncrementalValuesProviderExtensions.RegisterCollectedEmitter<T> — canonical "collect → gate → exception-safe emit → AddSource" pipeline, with a FileWithName overload and a (filename, string emitter) overload.
• CompilationExtensions.IsTypeAccessible — projects IncrementalValueProvider<Compilation> to a value-equatable bool in one call. Avoids the textbook anti-pattern of combining the non-equatable Compilation directly into a downstream stage (which thrashes the generator cache on every keystroke).
• AnalyzerConfigOptionsProviderExtensions.IsToggleEnabled — same shape for an MSBuild boolean toggle, with defaultValue defaulting to true.

Why

Three independent generator codebases reinvented the same dual-gate + collect + emit boilerplate locally. Surfacing it once in Roslyn.Utilities lets each per-concern generator become a thin declaration of inputs/gates/outputs:

var runtimeAvailable = context.CompilationProvider.IsTypeAccessible("My.Runtime.Marker");
var enabled = context.AnalyzerConfigOptionsProvider.IsToggleEnabled("MyFeature");
var gate = runtimeAvailable.Combine(enabled).Select(static (p, _) => p.Left && p.Right);

callSites.RegisterCollectedEmitter(context, gate, "My.g.cs", MyEmitter.Emit);

Test plan

• dotnet build clean (zero warnings, TreatWarningsAsErrors enforces cref regression — no CS0419)
• Testing.Tests 23/23 pass
• No new dependencies; only composes existing helpers (CollectAsEquatableArray, Combine, SelectAndReportExceptions, AddSource, HasAccessibleTypeWithMetadataName, GetGlobalBoolOrDefault)

🤖 Generated with Claude Code

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

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Configuration used: Organization UI

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Run ID: 5e285590-d628-438b-89f2-70c7d414f703

📥 Commits

Reviewing files that changed from the base of the PR and between 5306045 and 4caf1d2.

📒 Files selected for processing (3)

• src/ANcpLua.Roslyn.Utilities/AnalyzerConfigOptionsProviderExtensions.cs
• src/ANcpLua.Roslyn.Utilities/CompilationExtensions.cs
• src/ANcpLua.Roslyn.Utilities/IncrementalValuesProviderExtensions.cs

Cache: Disabled due to data retention organization setting

Knowledge base: Disabled due to data retention organization setting

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Summary by CodeRabbit

• New Features
  • Enhanced source generation utilities with improved configuration option processing capabilities.
  • Added type accessibility verification for compilation analysis.
  • Introduced standardized incremental generator registration patterns with exception handling and gating support.

Walkthrough

Three extension methods added to support incremental generator pipelines: IsToggleEnabled projects MSBuild analyzer options into boolean gates; IsTypeAccessible projects compilations into type-accessibility checks; RegisterCollectedEmitter registers standardized collection-combine-transform-emit pipelines with exception handling and gating support.

Changes

Incremental Generator Helper Extensions

Layer / File(s)	Summary
Gating & Selection Helpers src/ANcpLua.Roslyn.Utilities/AnalyzerConfigOptionsProviderExtensions.cs, src/ANcpLua.Roslyn.Utilities/CompilationExtensions.cs	IsToggleEnabled projects config options into parsed boolean gates; IsTypeAccessible projects compilations into type-accessible checks via existing HasAccessibleTypeWithMetadataName.
Collection & Emission Pipeline src/ANcpLua.Roslyn.Utilities/IncrementalValuesProviderExtensions.cs	Two RegisterCollectedEmitter overloads wire collected-and-gated pipelines: array collection, gate combination, exception-wrapped transformation, and source emission. Convenience overload converts string-returning emitters into FileWithName.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

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[Copilot]

Pull request overview

This PR promotes common incremental-generator pipeline patterns into shared helpers in ANcpLua.Roslyn.Utilities, reducing repeated boilerplate in consuming generators while preserving incremental caching behavior (projecting non-equatable Roslyn inputs into value-equatable boolean “gates”, and standardizing a collect+gate+emit pipeline).

Changes:

• Add IncrementalValuesProviderExtensions.RegisterCollectedEmitter<T> overloads to standardize “collect → gate → exception-safe emit → AddSource” for single-file generation.
• Add CompilationExtensions.IsTypeAccessible to project CompilationProvider into a value-equatable boolean gate based on accessible type presence.
• Add AnalyzerConfigOptionsProviderExtensions.IsToggleEnabled to project config options into a value-equatable boolean gate based on an MSBuild boolean property with a default.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/ANcpLua.Roslyn.Utilities/IncrementalValuesProviderExtensions.cs	Adds RegisterCollectedEmitter<T> helpers composing existing pipeline primitives (collect/combine/exception reporting/add-source).
src/ANcpLua.Roslyn.Utilities/CompilationExtensions.cs	Adds IsTypeAccessible to convert CompilationProvider into a boolean gate using existing accessibility checks.
src/ANcpLua.Roslyn.Utilities/AnalyzerConfigOptionsProviderExtensions.cs	Adds IsToggleEnabled to convert AnalyzerConfigOptionsProvider into a boolean gate using existing MSBuild boolean parsing helpers.