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Add public initializers in LanguageModelSession #102

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Merged
mattt merged 1 commit into from
Feb 4, 2026
Merged

Add public initializers in LanguageModelSession #102

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26 changes: 23 additions & 3 deletions Sources/AnyLanguageModel/LanguageModelSession.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -160,7 +160,12 @@ public final class LanguageModelSession: @unchecked Sendable {
public let rawContent: GeneratedContent
public let transcriptEntries: ArraySlice<Transcript.Entry>

init(
/// Creates a response value from generated content and transcript entries.
/// - Parameters:
/// - content: The decoded response content.
/// - rawContent: The raw content produced by the model.
/// - transcriptEntries: Transcript entries associated with the response.
public init(
content: Content,
rawContent: GeneratedContent,
transcriptEntries: ArraySlice<Transcript.Entry>
Expand Down Expand Up @@ -768,12 +773,18 @@ extension LanguageModelSession {
private let fallbackSnapshot: Snapshot?
private let streaming: AsyncThrowingStream<Snapshot, any Error>?

init(content: Content, rawContent: GeneratedContent) {
/// Creates a response stream that yields a single snapshot.
/// - Parameters:
/// - content: The complete response content.
/// - rawContent: The raw content produced by the model.
public init(content: Content, rawContent: GeneratedContent) {
self.fallbackSnapshot = Snapshot(content: content.asPartiallyGenerated(), rawContent: rawContent)
self.streaming = nil
}

init(stream: AsyncThrowingStream<Snapshot, any Error>) {
/// Creates a response stream that yields snapshots from an async stream.
/// - Parameter stream: The snapshot stream to relay.
public init(stream: AsyncThrowingStream<Snapshot, any Error>) {
// When streaming, snapshots arrive from the upstream sequence, so no fallback is required.
self.fallbackSnapshot = nil
self.streaming = stream
Expand All @@ -782,6 +793,15 @@ extension LanguageModelSession {
public struct Snapshot: Sendable where Content.PartiallyGenerated: Sendable {
public var content: Content.PartiallyGenerated
public var rawContent: GeneratedContent

/// Creates a snapshot from partially generated content and raw content.
/// - Parameters:
/// - content: The partially generated content.
/// - rawContent: The raw content produced by the model.
public init(content: Content.PartiallyGenerated, rawContent: GeneratedContent) {
self.content = content
self.rawContent = rawContent
}
}
}
}
Expand Down