Regenerate GenerateContent/ with the GeminiLanguageModel/scripts/typegen
generator from Discovery Document revision 20260929, fixing the drift
reported by the check-data-models CI job.
Generated model changes:
- Structs use optional `var` properties, an empty `init()` and
`Buildable` instead of memberwise initializers.
- Acronyms are capitalized in Swift names (e.g. `responseMIMEType`,
`URLContext`). JSON schema properties are typed as `JSONObject`, and
`Schema`, `DataType` and `VideoMetadata` are no longer generated.
- Enums combine both backends' cases and decode unknown values to
`.unrecognized`.
- Every generated file has a "DO NOT EDIT" header.
GeminiLanguageModel changes:
- Build requests with `Buildable` closures and adopt the renamed
properties. The encoded JSON is unchanged.
- Add `GeminiLanguageModel.Error.invalidResponse(InvalidResponse)`.
Responses that fail to decode or contain a function call with no
name now throw `invalidResponse` instead of `networkFailure`, and
`InvalidResponse.underlyingError` exposes the original error.
- Map the `MODEL_ARMOR` and `JAILBREAK` block reasons and the
`MODEL_ARMOR` finish reason to `guardrailViolation`.
- Exclude the GeminiLanguageModel test READMEs from the root SwiftPM
manifest so builds with `-warnings-as-errors` succeed.
Revert commit dd2cfa8df1 (#16685) to undo
the renaming from Gemini Enterprise Agent Platform to Gemini Enterprise
API.
- Restore Backend.agentPlatform(location:) as the primary public API
and remove Backend.enterprise(location:).
- Revert APIConfig.Service.enterprise to .agentPlatform and restore
agentPlatformStagingBypassProxy.
- Revert documentation comments, DocC topics, and guides back to
Agent Platform Gemini API and Gemini Enterprise Agent Platform.
- Clean up leftover Vertex AI symbols to align with Agent Platform and
FirebaseAILogic (isFirebaseAILogicServiceDisabledError and
defaultAgentPlatformAPIConfig).
- Re-align tests and conflict resolutions from #16689, #16693, #16676,
and #16756.
Implemented `GeminiLanguageModel`, providing an adapter for Google's
Gemini models conforming to Apple's `FoundationModels.LanguageModel`
protocol. This PR includes text to text generation capabilities; other
modalities and Gemini features will be handled in follow-up PRs.
**Note:** The `GeminiLanguageModel` implementation is guarded by the
environment variable `GEMINI_LANGUAGE_MODEL`. By default none of the
`GeminiLanguageModel` implementation is included.
Key additions:
- `GeminiLanguageModel`: Implements `LanguageModel` protocol with
reasoning capabilities, configuring execution via `ModelResource`
and `EndpointConfiguration`.
- `GeminiLanguageModelExecutor`: Converts prompt instructions and
history into Gemini streaming requests, yielding responses as
`LanguageModelSession.ResponseStream`.
- `GeminiTranscriptTranslator`: Translates Apple `Transcript` entries
and segments into Gemini `Content` structures while preserving thought
signatures and validating supported transcript features.
- `GeminiLanguageModel.Error` and `GeminiErrorMapper`: Translates Gemini
API, HTTP, and network errors into standard `LanguageModelError` cases
(`rateLimited`, `timeout`, `guardrailViolation`, `refusal`, and
`unsupportedLanguageOrLocale`) or `GeminiLanguageModel.Error` cases
(`serviceUnavailable`, `networkFailure`, `modelNotFound`, `apiError`).
The `APIError` payload is designed for seamless forward compatibility
with both GenerateContent and the upcoming Interactions API.
- Testing infrastructure: Adds `ConditionTrait.requireFoundationModels`
to conditionally run Foundation Models tests only on supported
platforms (macOS 27+, iOS 27+, watchOS 27+, visionOS 27+), along with
shared test constants, mock fixtures, and comprehensive unit and
integration test suites.
Andrew Heard