Function parseNode

src/endstone/core/command/minecraft_command_adapter.cpp:86–131

}

std::optional<std::string_view> parseNode(const CommandRegistry::ParseToken &root)
{
    // If there are no children, this is a leaf text node.
    if (!root.child) {
        if (root.length == 0) {
            return std::nullopt;
        }
        if (root.type == CommandRegistry::HardNonTerminal::Id) {
            return removeQuotes({root.text, root.length});
        }
        return std::string_view{root.text, root.length};
    }

    // Otherwise:
    const auto &child = *root.child;
    const auto *begin = findFirstWithText(&child);
    if (!begin) {
        return std::nullopt;
    }

    // (1) If this node has no next sibling, it's the last argument: consume all remaining text until the end
    if (!root.next) {
        const auto view = rstrip(begin->text);
        if (child.type == CommandRegistry::HardNonTerminal::Id) {
            return removeQuotes(view);
        }
        return view;
    }

    // (2) Otherwise, find the start of the next argument and extract the substring between begin and end, then trim
    // trailing whitespace.
    const auto *end = findFirstWithText(root.next.get());
    if (!end) {
        const auto view = rstrip(begin->text);
        if (child.type == CommandRegistry::HardNonTerminal::Id) {
            return removeQuotes(view);
        }
        return view;
    }

    const auto view = rstrip({begin->text, end->text});
    if (child.type == CommandRegistry::HardNonTerminal::Id) {
        return removeQuotes(view);
    }
    return view;
}
}  // namespace

template <>