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.
109 lines
3.8 KiB
Swift
109 lines
3.8 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 `FunctionCall`.
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///
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/// ### Gemini Developer API
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///
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/// Type: `FunctionCall`
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///
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/// An element in the history the represents the model asking the client to
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/// invoke a client-side function.
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Type: `GoogleCloudAiplatformV1beta1FunctionCall`
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///
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/// A predicted FunctionCall returned from the model that
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/// contains a string representing the FunctionDeclaration.name and
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/// a structured JSON object containing the parameters and their values.
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package struct FunctionCall: Codable, Sendable, Equatable, Hashable {
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/// Required. ID of the individual function invocation assigned by the model when it
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///
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/// ### Gemini Developer API
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///
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/// Required. ID of the individual function invocation assigned by the model when it
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/// requests the function invocation.
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Optional. The unique id of the function call. If populated, the client to execute the
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/// `function_call` and return the response with the matching `id`.
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package let id: String?
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/// Required. The name of the function to be invoked.
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///
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/// ### Gemini Developer API
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///
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/// Required. The name of the function to be invoked.
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Optional. The name of the function to call.
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/// Matches FunctionDeclaration.name.
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package let name: String
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/// Optional. Inputs to the function passed by the model
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///
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/// ### Gemini Developer API
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///
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/// Optional. Inputs to the function passed by the model
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Optional. The function parameters and values in JSON object format.
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/// See FunctionDeclaration.parameters for parameter details.
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package let args: [String: JSONValue]?
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/// Optional. Whether this is the last part of the FunctionCall.
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///
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/// ### Gemini Developer API
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///
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/// > Important: This property is not supported in the Gemini Developer API.
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Optional. Whether this is the last part of the FunctionCall.
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/// If true, another partial message for the current FunctionCall is expected
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/// to follow.
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package let willContinue: Bool?
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/// Creates a new `FunctionCall`.
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///
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/// - Parameters:
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/// - id: Required. ID of the individual function invocation assigned by the model when it (behavior varies by backend). For more details, see ``id``.
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/// - name: Required. The name of the function to be invoked. (behavior varies by backend). For more details, see ``name``.
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/// - args: Optional. Inputs to the function passed by the model (behavior varies by backend). For more details, see ``args``.
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/// - willContinue: Optional. Whether this is the last part of the FunctionCall. (Gemini Enterprise Agent Platform only). For more details, see ``willContinue``.
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package init(
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id: String? = nil,
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name: String,
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args: [String: JSONValue]? = nil,
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willContinue: Bool? = nil
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) {
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self.id = id
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self.name = name
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self.args = args
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self.willContinue = willContinue
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}
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enum CodingKeys: String, CodingKey {
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case id = "id"
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case name = "name"
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case args = "args"
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case willContinue = "willContinue"
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}
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}
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