ast -> linkers = {
    globals = {
        ['"X"|"Y"|"Z"'] = {src1, src2, src3},
        ['"X"|"Y"']     = {src4, src5, src6},
        ['"X"']         = {src7, src8, src9},
    },
    locals = {
        ['7']     = {src10},
        ['7|"x"'] = {src11},
    },
    tfield = {
        ['11|"k"'] = {src12},
    },
}