class H::Actions {
    # construct a hash from a list of pairs
    method TOP($/)  {
        make  %($<pairs>.ast);
    }

    # construct a list of Str => Match pairs
    method pairs($/){ make @($<pair>».ast) }

    # construct a Str => Match pair
    method pair($/) { make ~$<key> => $<mash> };
}