fn prepare_pre_prompt()

in core/src/tokenization.rs [264:283]

• 20 lines of code
• 3 McCabe index (conditional complexity)

fn prepare_pre_prompt(
    default_prompt: Option<String>,
    prompt_name: Option<String>,
    prompts: Option<&HashMap<String, String>>,
) -> Result<Option<String>, TextEmbeddingsError> {
    let pre_prompt = if let Some(prompt_name) = prompt_name.as_ref() {
        match prompts {
            None => {
                return Err(TextEmbeddingsError::Validation(format!("`default-prompt-name` is set to `{prompt_name}` but no prompts were found in the Sentence Transformers configuration")));
            }
            Some(prompts) if !prompts.contains_key(prompt_name) => {
                return Err(TextEmbeddingsError::Validation(format!("`default-prompt-name` is set to `{prompt_name}` but it was not found in the Sentence Transformers prompts. Available prompts: {:?}", prompts.keys())));
            }
            Some(prompts) => prompts.get(prompt_name).cloned(),
        }
    } else {
        default_prompt
    };
    Ok(pre_prompt)
}