mirror of
https://github.com/firebase/firebase-ios-sdk
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Andrew Heard
3796a55fdf
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.
89 lines
2.9 KiB
Swift
89 lines
2.9 KiB
Swift
// Copyright 2026 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import Foundation
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/// An internal data model for `Content`.
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///
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/// ### Gemini Developer API
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///
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/// Type: `GoogleAiGenerativelanguageV1betaContent`
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///
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/// The base structured datatype containing multi-part content of a message.
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///
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/// A `Content` includes a `role` field designating the producer of the `Content`
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/// and a `parts` field containing multi-part data that contains the content of
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/// the message turn.
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Type: `GoogleCloudAiplatformV1beta1Content`
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///
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/// The structured data content of a message.
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///
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/// A Content message contains a `role`
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/// field, which indicates the producer of the content, and a `parts` field,
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/// which contains the multi-part data of the message.
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package struct Content: Codable, Sendable, Equatable, Hashable {
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/// Ordered `Parts` that constitute a single message. Parts may have different
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///
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/// ### Gemini Developer API
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///
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/// Ordered `Parts` that constitute a single message. Parts may have different
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/// MIME types.
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Required. A list of Part objects
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/// that make up a single message. Parts of a message can have different MIME
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/// types.
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///
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/// A Content message must have at
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/// least one Part.
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package let parts: [Part]?
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/// Optional. The producer of the content. Must be either 'user' or 'model'.
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///
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/// ### Gemini Developer API
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///
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/// Optional. The producer of the content. Must be either 'user' or 'model'.
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///
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/// Useful to set for multi-turn conversations, otherwise can be left blank
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/// or unset.
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Optional. The producer of the content. Must be either 'user' or 'model'.
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///
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/// If not set, the service will default to 'user'.
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package let role: String?
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/// Creates a new `Content`.
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///
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/// - Parameters:
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/// - parts: Ordered `Parts` that constitute a single message. Parts may have different (behavior varies by backend). For more details, see ``parts``.
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/// - role: Optional. The producer of the content. Must be either 'user' or 'model'. (behavior varies by backend). For more details, see ``role``.
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package init(
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parts: [Part]? = nil,
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role: String? = nil
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) {
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self.parts = parts
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self.role = role
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}
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enum CodingKeys: String, CodingKey {
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case parts = "parts"
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case role = "role"
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}
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}
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