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.
95 lines
3.8 KiB
Swift
95 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 `FunctionCallingConfig`.
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///
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/// ### Gemini Developer API
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///
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/// Type: `GoogleAiGenerativelanguageV1betaFunctionCallingConfig`
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///
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/// Configuration for specifying function calling behavior.
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Type: `GoogleCloudAiplatformV1beta1FunctionCallingConfig`
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///
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/// Function calling config.
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package struct FunctionCallingConfig: Codable, Sendable, Equatable, Hashable {
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/// Optional. Specifies the mode in which function calling should execute. If
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///
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/// ### Gemini Developer API
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///
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/// Optional. Specifies the mode in which function calling should execute. If
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/// unspecified, the default value will be set to AUTO.
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Optional. Function calling mode.
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package let mode: Mode?
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/// Optional. A set of function names that, when provided, limits the functions the model
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///
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/// ### Gemini Developer API
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///
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/// Optional. A set of function names that, when provided, limits the functions the model
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/// will call.
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///
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/// This should only be set when the Mode is ANY or VALIDATED. Function names
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/// should match [FunctionDeclaration.name]. When set, model will
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/// predict a function call from only allowed function names.
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///
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/// ### Gemini Enterprise Agent Platform
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///
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/// Optional. Function names to call. Only set when the Mode is ANY. Function names
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/// should match FunctionDeclaration.name. With mode set to ANY, model will
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/// predict a function call from the set of function names provided.
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package let allowedFunctionNames: [String]?
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/// Optional. When set to true, arguments of a single function call will be streamed out
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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. When set to true, arguments of a single function call will be streamed out
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/// in multiple parts/contents/responses. Partial parameter results will be
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/// returned in the `FunctionCall.partial_args` field.
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package let streamFunctionCallArguments: Bool?
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/// Creates a new `FunctionCallingConfig`.
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///
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/// - Parameters:
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/// - mode: Optional. Specifies the mode in which function calling should execute. If (behavior varies by backend). For more details, see ``mode``.
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/// - allowedFunctionNames: Optional. A set of function names that, when provided, limits the functions the model (behavior varies by backend). For more details, see ``allowedFunctionNames``.
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/// - streamFunctionCallArguments: Optional. When set to true, arguments of a single function call will be streamed out (Gemini Enterprise Agent Platform only). For more details, see ``streamFunctionCallArguments``.
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package init(
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mode: Mode? = nil,
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allowedFunctionNames: [String]? = nil,
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streamFunctionCallArguments: Bool? = nil
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) {
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self.mode = mode
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self.allowedFunctionNames = allowedFunctionNames
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self.streamFunctionCallArguments = streamFunctionCallArguments
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}
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enum CodingKeys: String, CodingKey {
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case mode = "mode"
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case allowedFunctionNames = "allowedFunctionNames"
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case streamFunctionCallArguments = "streamFunctionCallArguments"
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}
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}
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