Function get_expected_description

tests/test-chat.cpp:219–249

Get description of what the grammar expects at current position

// Get description of what the grammar expects at current position
static std::string get_expected_description(const llama_grammar_rules & rules, const llama_grammar_stacks & stacks) {
    if (stacks.empty()) {
        return "<no valid continuations>";
    }

    std::string           result;
    std::set<std::string> seen;

    for (const auto & stack : stacks) {
        if (stack.empty()) {
            if (seen.insert("<end>").second) {
                if (!result.empty()) {
                    result += " OR ";
                }
                result += "<end>";
            }
            continue;
        }

        const llama_grammar_element * elem = stack.back();
        std::string                   desc = format_expected_element(rules, elem);
        if (seen.insert(desc).second) {
            if (!result.empty()) {
                result += " OR ";
            }
            result += desc;
        }
    }

    return result;
}

// Result of a detailed grammar match attempt
struct grammar_match_result {