func()

in streamaccumulator.go [104:158]

• 44 lines of code
• 9 McCabe index (conditional complexity)

func (cc *ChatCompletion) accumulateDelta(chunk ChatCompletionChunk) bool {
	if len(cc.ID) == 0 {
		cc.ID = chunk.ID
	} else if cc.ID != chunk.ID {
		return false
	}

	for _, delta := range chunk.Choices {
		cc.Choices = expandToFit(cc.Choices, int(delta.Index))
		choice := &cc.Choices[delta.Index]

		choice.Index = delta.Index
		choice.FinishReason = delta.FinishReason

		if delta.Delta.Role != "" {
			choice.Message.Role = constant.Assistant(delta.Delta.Role)
		}

		choice.Message.Content += delta.Delta.Content
		choice.Message.Refusal += delta.Delta.Refusal

		for j := range delta.Delta.ToolCalls {
			deltaTool := &delta.Delta.ToolCalls[j]

			choice.Message.ToolCalls = expandToFit(choice.Message.ToolCalls, int(deltaTool.Index))
			tool := &choice.Message.ToolCalls[deltaTool.Index]

			if deltaTool.ID != "" {
				tool.ID = deltaTool.ID
			}
			if deltaTool.Type != "" {
				tool.Type = constant.Function(deltaTool.Type)
			}
			tool.Function.Name += deltaTool.Function.Name
			tool.Function.Arguments += deltaTool.Function.Arguments
		}

		choice.Logprobs.Content = append(choice.Logprobs.Content, delta.Logprobs.Content...)
		choice.Logprobs.Refusal = append(choice.Logprobs.Refusal, delta.Logprobs.Refusal...)
	}

	cc.Usage.CompletionTokens += chunk.Usage.CompletionTokens
	cc.Usage.PromptTokens += chunk.Usage.PromptTokens
	cc.Usage.TotalTokens += chunk.Usage.TotalTokens

	cc.Model = chunk.Model
	cc.Created = chunk.Created
	cc.SystemFingerprint = chunk.SystemFingerprint
	cc.ServiceTier = ChatCompletionServiceTier(chunk.ServiceTier)
	if chunk.Object == chunk.Object.Default() {
		cc.Object = cc.Object.Default()
	}

	return true
}