Method processToolCalls

src/api/providers/openai.ts:470–501

* Helper generator to process tool calls from a stream chunk. * Tracks active tool call IDs and yields tool_call_partial and tool_call_end events. * @param delta - The delta object from the stream chunk * @param finishReason - The finish_reason from the stream chunk * @param activeToolCallId

(
		delta: OpenAI.Chat.Completions.ChatCompletionChunk.Choice.Delta | undefined,
		finishReason: string | null | undefined,
		activeToolCallIds: Set<string>,
	)

	 * @param activeToolCallIds - Set to track active tool call IDs (mutated in place)
	 */
	protected *processToolCalls(
		delta: OpenAI.Chat.Completions.ChatCompletionChunk.Choice.Delta | undefined,
		finishReason: string | null | undefined,
		activeToolCallIds: Set<string>,
	): Generator<
		| { type: "tool_call_partial"; index: number; id?: string; name?: string; arguments?: string }
		| { type: "tool_call_end"; id: string }
	> {
		if (delta?.tool_calls) {
			for (const toolCall of delta.tool_calls) {
				if (toolCall.id) {
					activeToolCallIds.add(toolCall.id)
				}
				yield {
					type: "tool_call_partial",
					index: toolCall.index,
					id: toolCall.id,
					name: toolCall.function?.name,
					arguments: toolCall.function?.arguments,
				}
			}
		}

		// Emit tool_call_end events when finish_reason is "tool_calls"
		// This ensures tool calls are finalized even if the stream doesn't properly close
		if (finishReason === "tool_calls" && activeToolCallIds.size > 0) {
			for (const id of activeToolCallIds) {
				yield { type: "tool_call_end", id }
			}
			activeToolCallIds.clear()
		}
	}

	protected _getUrlHost(baseUrl?: string): string {
		try {