74 lines
3.2 KiB
Markdown
74 lines
3.2 KiB
Markdown
---
|
|
id: PLN-0105
|
|
ticket: multi-frontend-provider-contract
|
|
title: Wrap PBS frontend as explicit provider
|
|
status: open
|
|
created: 2026-07-15
|
|
ref_decisions: [DEC-0040]
|
|
tags: [compiler, compiler-general, studio, frontend, registry, multi-frontend]
|
|
---
|
|
|
|
## Briefing
|
|
|
|
DEC-0040 requires PBS to become the only initial real provider behind the new `FrontendProvider` contract. This plan wraps existing PBS frontend behavior without changing PBS product behavior.
|
|
|
|
Domain owner: `compiler/general`, with implementation in `compiler/pbs` and composition impact in `prometeu-app`.
|
|
|
|
## Objective
|
|
|
|
Create and register an explicit PBS provider through the application composition root.
|
|
|
|
## Dependencies
|
|
|
|
- `PLN-0104` must introduce `FrontendProvider` and provider lookup first.
|
|
- Accepted decision: `DEC-0040`.
|
|
- Existing PBS frontend phase/service implementation.
|
|
- Application composition root in `prometeu-app`.
|
|
|
|
## Scope
|
|
|
|
- Add `PBSFrontendProvider` or equivalent concrete provider object.
|
|
- Make the provider return the existing PBS `FrontendSpec`.
|
|
- Make the provider return the existing PBS compiler-facing service or phase.
|
|
- Return no language service, or the existing PBS language-service adapter only if already present and compatible.
|
|
- Register PBS explicitly in `prometeu-app/src/main/java/p/studio/AppContainer.java` or the nearest current application composition point.
|
|
- Ensure PBS remains the only initial real provider.
|
|
|
|
## Non-Goals
|
|
|
|
- Do not create another real frontend.
|
|
- Do not change PBS parsing, semantics, lowering, or runtime output.
|
|
- Do not migrate all common consumers in this plan.
|
|
- Do not introduce dynamic provider discovery.
|
|
|
|
## Execution Method
|
|
|
|
1. Inspect PBS frontend module boundaries and locate the current `FrontendSpec` and `FrontendPhaseService` construction.
|
|
2. Add `PBSFrontendProvider` in the PBS frontend module or an existing integration package that can legally depend on PBS.
|
|
3. Implement `specification()` and `compiler()` by delegating to the existing PBS objects.
|
|
4. Implement `languageService()` as empty unless a current Studio-compatible PBS language service already exists.
|
|
5. Update `AppContainer` or the existing composition root to register the PBS provider explicitly with `FrontendRegistryService`.
|
|
6. Remove direct PBS registration paths that duplicate the provider registration if they become redundant.
|
|
7. Add tests proving only PBS is registered as the real provider in the default composition path.
|
|
|
|
## Acceptance Criteria
|
|
|
|
- PBS is represented by a concrete provider object.
|
|
- Default application composition registers PBS explicitly as a provider.
|
|
- PBS remains functional through existing compile/build flows.
|
|
- No additional real frontend is introduced.
|
|
- No dynamic discovery mechanism is added.
|
|
|
|
## Tests
|
|
|
|
- Provider test: `PBSFrontendProvider.specification()` returns the PBS language id.
|
|
- Provider test: `PBSFrontendProvider.compiler()` returns working compiler-facing behavior.
|
|
- Composition test: default registry contains PBS as the only real provider.
|
|
- Existing PBS compile/build tests continue to pass.
|
|
|
|
## Affected Artifacts
|
|
|
|
- PBS frontend module under `prometeu-compiler/frontends/prometeu-frontend-pbs/...`
|
|
- `prometeu-app/src/main/java/p/studio/AppContainer.java`
|
|
- Registry or application composition tests.
|