def combine(ts):
def merge_alleles(alleles):
from hail.expr.functions import _num_allele_type, _allele_ints
return hl.rbind(
alleles.map(lambda a: hl.or_else(a[0], '')).fold(
lambda s, t: hl.cond(hl.len(s) > hl.len(t), s, t), ''),
lambda ref: hl.rbind(
alleles.map(lambda al: hl.rbind(
al[0], lambda r: hl.array([ref]).
extend(al[1:].map(lambda a: hl.rbind(
_num_allele_type(r, a), lambda at: hl.cond(
(_allele_ints['SNP'] == at)
| (_allele_ints['Insertion'] == at)
| (_allele_ints['Deletion'] == at)
| (_allele_ints['MNP'] == at)
| (_allele_ints['Complex'] == at), a + ref[hl.len(
r):], a)))))), lambda lal: hl.
struct(globl=hl.array([ref]).extend(
hl.array(hl.set(hl.flatten(lal)).remove(ref))),
local=lal)))
def renumber_entry(entry, old_to_new) -> StructExpression:
# global index of alternate (non-ref) alleles
return entry.annotate(LA=entry.LA.map(lambda lak: old_to_new[lak]))
if (ts.row.dtype, ts.globals.dtype) not in _merge_function_map:
f = hl.experimental.define_function(
lambda row, gbl: hl.rbind(
merge_alleles(row.data.map(lambda d: d.alleles)), lambda
alleles: hl.struct(
locus=row.locus,
alleles=alleles.globl,
rsid=hl.find(hl.is_defined, row.data.map(lambda d: d.rsid)
),
__entries=hl.bind(
lambda combined_allele_index: hl.
range(0, hl.len(row.data)).flatmap(lambda i: hl.cond(
hl.is_missing(row.data[i].__entries),
hl.range(0, hl.len(gbl.g[i].__cols)).map(
lambda _: hl.null(row.data[i].__entries.dtype.
element_type)),
hl.bind(
lambda old_to_new: row.data[i].__entries.map(
lambda e: renumber_entry(e, old_to_new)),
hl.range(0, hl.len(alleles.local[i])).map(
lambda j: combined_allele_index[
alleles.local[i][j]])))),
hl.dict(
hl.range(0, hl.len(alleles.globl)).map(
lambda j: hl.tuple([alleles.globl[j], j])))))),
ts.row.dtype, ts.globals.dtype)
_merge_function_map[(ts.row.dtype, ts.globals.dtype)] = f
merge_function = _merge_function_map[(ts.row.dtype, ts.globals.dtype)]
ts = Table(
TableMapRows(
ts._tir,
Apply(merge_function._name, merge_function._ret_type,
TopLevelReference('row'), TopLevelReference('global'))))
return ts.transmute_globals(
__cols=hl.flatten(ts.g.map(lambda g: g.__cols)))
def combine_r(ts):
if (ts.row.dtype, ts.globals.dtype) not in _merge_function_map:
f = hl.experimental.define_function(
lambda row, gbl:
hl.struct(
locus=row.locus,
ref_allele=hl.find(hl.is_defined, row.data.map(lambda d: d.ref_allele)),
__entries=hl.range(0, hl.len(row.data)).flatmap(
lambda i:
hl.if_else(hl.is_missing(row.data[i]),
hl.range(0, hl.len(gbl.g[i].__cols))
.map(lambda _: hl.missing(row.data[i].__entries.dtype.element_type)),
row.data[i].__entries))),
ts.row.dtype, ts.globals.dtype)
_merge_function_map[(ts.row.dtype, ts.globals.dtype)] = f
merge_function = _merge_function_map[(ts.row.dtype, ts.globals.dtype)]
ts = Table(TableMapRows(ts._tir, Apply(merge_function._name,
merge_function._ret_type,
TopLevelReference('row'),
TopLevelReference('global'))))
return ts.transmute_globals(__cols=hl.flatten(ts.g.map(lambda g: g.__cols)))
def transform_gvcf(mt, info_to_keep=[]) -> Table:
"""Transforms a gvcf into a sparse matrix table
The input to this should be some result of either :func:`.import_vcf` or
:func:`.import_gvcfs` with ``array_elements_required=False``.
There is an assumption that this function will be called on a matrix table
with one column (or a localized table version of the same).
Parameters
----------
mt : :obj:`Union[Table, MatrixTable]`
The gvcf being transformed, if it is a table, then it must be a localized matrix table with
the entries array named ``__entries``
info_to_keep : :obj:`List[str]`
Any ``INFO`` fields in the gvcf that are to be kept and put in the ``gvcf_info`` entry
field. By default, all ``INFO`` fields except ``END`` and ``DP`` are kept.
Returns
-------
:obj:`.Table`
A localized matrix table that can be used as part of the input to :func:`.combine_gvcfs`
Notes
-----
This function will parse the following allele specific annotations from
pipe delimited strings into proper values. ::
AS_QUALapprox
AS_RAW_MQ
AS_RAW_MQRankSum
AS_RAW_ReadPosRankSum
AS_SB_TABLE
AS_VarDP
"""
if not info_to_keep:
info_to_keep = [name for name in mt.info if name not in ['END', 'DP']]
mt = localize(mt)
if mt.row.dtype not in _transform_rows_function_map:
def get_lgt(e, n_alleles, has_non_ref, row):
index = e.GT.unphased_diploid_gt_index()
n_no_nonref = n_alleles - hl.int(has_non_ref)
triangle_without_nonref = hl.triangle(n_no_nonref)
return (hl.case().when(index < triangle_without_nonref, e.GT).when(
index < hl.triangle(n_alleles),
hl.null('call')).or_error('invalid GT ' + hl.str(e.GT) +
' at site ' + hl.str(row.locus)))
def make_entry_struct(e, alleles_len, has_non_ref, row):
handled_fields = dict()
handled_names = {
'LA', 'gvcf_info', 'END', 'LAD', 'AD', 'LGT', 'GT', 'LPL',
'PL', 'LPGT', 'PGT'
}
if 'END' not in row.info:
raise hl.utils.FatalError(
"the Hail GVCF combiner expects GVCFs to have an 'END' field in INFO."
)
if 'GT' not in e:
raise hl.utils.FatalError(
"the Hail GVCF combiner expects GVCFs to have a 'GT' field in FORMAT."
)
handled_fields['LA'] = hl.range(
0, alleles_len - hl.cond(has_non_ref, 1, 0))
handled_fields['LGT'] = get_lgt(e, alleles_len, has_non_ref, row)
if 'AD' in e:
handled_fields['LAD'] = hl.cond(has_non_ref, e.AD[:-1], e.AD)
if 'PGT' in e:
handled_fields['LPGT'] = e.PGT
if 'PL' in e:
handled_fields['LPL'] = hl.cond(
has_non_ref,
hl.cond(alleles_len > 2, e.PL[:-alleles_len],
hl.null(e.PL.dtype)),
hl.cond(alleles_len > 1, e.PL, hl.null(e.PL.dtype)))
handled_fields['RGQ'] = hl.cond(
has_non_ref,
e.PL[hl.call(0,
alleles_len - 1).unphased_diploid_gt_index()],
hl.null(e.PL.dtype.element_type))
handled_fields['END'] = row.info.END
handled_fields['gvcf_info'] = (hl.case().when(
hl.is_missing(row.info.END),
hl.struct(**(parse_as_fields(row.info.select(
*info_to_keep), has_non_ref)))).or_missing())
pass_through_fields = {
k: v
for k, v in e.items() if k not in handled_names
}
return hl.struct(**handled_fields, **pass_through_fields)
f = hl.experimental.define_function(
lambda row: hl.rbind(
hl.len(row.alleles), '<NON_REF>' == row.alleles[-1], lambda
alleles_len, has_non_ref: hl.struct(
locus=row.locus,
alleles=hl.cond(has_non_ref, row.alleles[:-1], row.alleles
),
rsid=row.rsid,
__entries=row.__entries.map(lambda e: make_entry_struct(
e, alleles_len, has_non_ref, row)))), mt.row.dtype)
_transform_rows_function_map[mt.row.dtype] = f
transform_row = _transform_rows_function_map[mt.row.dtype]
return Table(
TableMapRows(
mt._tir,
Apply(transform_row._name, transform_row._ret_type,
TopLevelReference('row'))))
def transform_gvcf(mt, info_to_keep=[]) -> Table:
"""Transforms a gvcf into a sparse matrix table
The input to this should be some result of either :func:`.import_vcf` or
:func:`.import_gvcfs` with ``array_elements_required=False``.
There is an assumption that this function will be called on a matrix table
with one column (or a localized table version of the same).
Parameters
----------
mt : :obj:`Union[Table, MatrixTable]`
The gvcf being transformed, if it is a table, then it must be a localized matrix table with
the entries array named ``__entries``
info_to_keep : :obj:`List[str]`
Any ``INFO`` fields in the gvcf that are to be kept and put in the ``gvcf_info`` entry
field. By default, all ``INFO`` fields except ``END`` and ``DP`` are kept.
Returns
-------
:obj:`.Table`
A localized matrix table that can be used as part of the input to :func:`.combine_gvcfs`
Notes
-----
This function will parse the following allele specific annotations from
pipe delimited strings into proper values. ::
AS_QUALapprox
AS_RAW_MQ
AS_RAW_MQRankSum
AS_RAW_ReadPosRankSum
AS_SB_TABLE
AS_VarDP
"""
if not info_to_keep:
info_to_keep = [name for name in mt.info if name not in ['END', 'DP']]
mt = localize(mt)
if mt.row.dtype not in _transform_rows_function_map:
f = hl.experimental.define_function(
lambda row: hl.rbind(
hl.len(row.alleles),
'<NON_REF>' == row.alleles[-1],
lambda alleles_len, has_non_ref: hl.
struct(locus=row.locus,
alleles=hl.cond(has_non_ref, row.alleles[:-1], row.
alleles),
rsid=row.rsid,
__entries=row.__entries.map(lambda e: hl.struct(
DP=e.DP,
END=row.info.END,
GQ=e.GQ,
LA=hl.range(
0, alleles_len - hl.cond(has_non_ref, 1, 0)),
LAD=hl.cond(has_non_ref, e.AD[:-1], e.AD),
LGT=e.GT,
LPGT=e.PGT,
LPL=hl.cond(
has_non_ref,
hl.cond(alleles_len > 2, e.PL[:-alleles_len],
hl.null(e.PL.dtype)),
hl.cond(alleles_len > 1, e.PL,
hl.null(e.PL.dtype))),
MIN_DP=e.MIN_DP,
PID=e.PID,
RGQ=hl.cond(
has_non_ref, e.PL[hl.call(0, alleles_len - 1).
unphased_diploid_gt_index()],
hl.null(e.PL.dtype.element_type)),
SB=e.SB,
gvcf_info=hl.case().when(
hl.is_missing(row.info.END),
hl.struct(**(parse_as_fields(
row.info.select(*info_to_keep), has_non_ref)
))).or_missing()))),
), mt.row.dtype)
_transform_rows_function_map[mt.row.dtype] = f
transform_row = _transform_rows_function_map[mt.row.dtype]
return Table(
TableMapRows(
mt._tir,
Apply(transform_row._name, transform_row._ret_type,
TopLevelReference('row'))))
def transform_one(mt) -> Table:
"""transforms a gvcf into a form suitable for combining
The input to this should be some result of either :func:`.import_vcf` or
:func:`.import_vcfs` with `array_elements_required=False`.
"""
mt = localize(mt)
if mt.row.dtype not in _transform_rows_function_map:
f = hl.experimental.define_function(
lambda row: hl.rbind(
hl.len(row.alleles),
'<NON_REF>' == row.alleles[-1],
lambda alleles_len, has_non_ref: hl.
struct(locus=row.locus,
alleles=hl.cond(has_non_ref, row.alleles[:-1], row.
alleles),
rsid=row.rsid,
info=row.info.annotate(SB_TABLE=hl.array([
hl.sum(row.__entries.map(lambda d: d.SB[0])),
hl.sum(row.__entries.map(lambda d: d.SB[1])),
hl.sum(row.__entries.map(lambda d: d.SB[2])),
hl.sum(row.__entries.map(lambda d: d.SB[3])),
])).select(
"MQ_DP",
"QUALapprox",
"RAW_MQ",
"SB_TABLE",
"VarDP",
),
__entries=row.__entries.map(lambda e: hl.struct(
BaseQRankSum=row.info['BaseQRankSum'],
ClippingRankSum=row.info['ClippingRankSum'],
DP=e.DP,
END=row.info.END,
GQ=e.GQ,
LA=hl.range(
0, alleles_len - hl.cond(has_non_ref, 1, 0)),
LAD=hl.cond(has_non_ref, e.AD[:-1], e.AD),
LGT=e.GT,
LPGT=e.PGT,
LPL=hl.cond(
has_non_ref,
hl.cond(alleles_len > 2, e.PL[:-alleles_len],
hl.null(e.PL.dtype)),
hl.cond(alleles_len > 1, e.PL,
hl.null(e.PL.dtype))),
MIN_DP=e.MIN_DP,
MQ=row.info['MQ'],
MQRankSum=row.info['MQRankSum'],
PID=e.PID,
RGQ=hl.cond(
has_non_ref, e.PL[hl.call(0, alleles_len - 1).
unphased_diploid_gt_index()],
hl.null(e.PL.dtype.element_type)),
ReadPosRankSum=row.info['ReadPosRankSum'],
))),
), mt.row.dtype)
_transform_rows_function_map[mt.row.dtype] = f
transform_row = _transform_rows_function_map[mt.row.dtype]
return Table(
TableMapRows(mt._tir,
Apply(transform_row._name, TopLevelReference('row'))))
def transform_one(mt, vardp_outlier=100_000) -> Table:
"""transforms a gvcf into a form suitable for combining
The input to this should be some result of either :func:`.import_vcf` or
:func:`.import_vcfs` with `array_elements_required=False`.
There is a strong assumption that this function will be called on a matrix
table with one column.
"""
mt = localize(mt)
if mt.row.dtype not in _transform_rows_function_map:
f = hl.experimental.define_function(
lambda row: hl.rbind(
hl.len(row.alleles),
'<NON_REF>' == row.alleles[-1],
lambda alleles_len, has_non_ref: hl.
struct(locus=row.locus,
alleles=hl.cond(has_non_ref, row.alleles[:-1], row.
alleles),
rsid=row.rsid,
__entries=row.__entries.map(lambda e: hl.struct(
DP=e.DP,
END=row.info.END,
GQ=e.GQ,
LA=hl.range(
0, alleles_len - hl.cond(has_non_ref, 1, 0)),
LAD=hl.cond(has_non_ref, e.AD[:-1], e.AD),
LGT=e.GT,
LPGT=e.PGT,
LPL=hl.cond(
has_non_ref,
hl.cond(alleles_len > 2, e.PL[:-alleles_len],
hl.null(e.PL.dtype)),
hl.cond(alleles_len > 1, e.PL,
hl.null(e.PL.dtype))),
MIN_DP=e.MIN_DP,
PID=e.PID,
RGQ=hl.cond(
has_non_ref, e.PL[hl.call(0, alleles_len - 1).
unphased_diploid_gt_index()],
hl.null(e.PL.dtype.element_type)),
SB=e.SB,
gvcf_info=hl.case().when(
hl.is_missing(row.info.END),
hl.struct(
ClippingRankSum=row.info.ClippingRankSum,
BaseQRankSum=row.info.BaseQRankSum,
MQ=row.info.MQ,
MQRankSum=row.info.MQRankSum,
MQ_DP=row.info.MQ_DP,
QUALapprox=row.info.QUALapprox,
RAW_MQ=row.info.RAW_MQ,
ReadPosRankSum=row.info.ReadPosRankSum,
VarDP=hl.cond(
row.info.VarDP > vardp_outlier, row.info
.DP, row.info.VarDP))).or_missing()))),
), mt.row.dtype)
_transform_rows_function_map[mt.row.dtype] = f
transform_row = _transform_rows_function_map[mt.row.dtype]
return Table(
TableMapRows(mt._tir,
Apply(transform_row._name, TopLevelReference('row'))))
def transform_one(mt, info_to_keep=[]) -> Table:
if not info_to_keep:
info_to_keep = [name for name in mt.info if name not in ['END', 'DP']]
mt = localize(mt)
if mt.row.dtype not in _transform_rows_function_map:
f = hl.experimental.define_function(
lambda row: hl.rbind(
hl.len(row.alleles), '<NON_REF>' == row.alleles[-1],
lambda alleles_len, has_non_ref: hl.struct(
locus=row.locus,
alleles=hl.cond(has_non_ref, row.alleles[:-1], row.alleles),
rsid=row.rsid,
__entries=row.__entries.map(
lambda e:
hl.struct(
DP=e.DP,
END=row.info.END,
GQ=e.GQ,
LA=hl.range(0, alleles_len - hl.cond(has_non_ref, 1, 0)),
LAD=hl.cond(has_non_ref, e.AD[:-1], e.AD),
LGT=e.GT,
LPGT=e.PGT,
LPL=hl.cond(has_non_ref,
hl.cond(alleles_len > 2,
e.PL[:-alleles_len],
hl.null(e.PL.dtype)),
hl.cond(alleles_len > 1,
e.PL,
hl.null(e.PL.dtype))),
MIN_DP=e.MIN_DP,
PID=e.PID,
RGQ=hl.cond(
has_non_ref,
e.PL[hl.call(0, alleles_len - 1).unphased_diploid_gt_index()],
hl.null(e.PL.dtype.element_type)),
SB=e.SB,
gvcf_info=hl.case()
.when(hl.is_missing(row.info.END),
hl.struct(**(
parse_as_fields(
row.info.select(*info_to_keep),
has_non_ref)
)))
.or_missing()
))),
),
mt.row.dtype)
_transform_rows_function_map[mt.row.dtype] = f
transform_row = _transform_rows_function_map[mt.row.dtype]
return Table(TableMapRows(mt._tir, Apply(transform_row._name, transform_row._ret_type, TopLevelReference('row'))))
def make_variants_matrix_table(mt: MatrixTable,
info_to_keep: Optional[Collection[str]] = None
) -> MatrixTable:
if info_to_keep is None:
info_to_keep = []
if not info_to_keep:
info_to_keep = [name for name in mt.info if name not in ['END', 'DP']]
info_key = tuple(sorted(info_to_keep)) # hashable stable value
mt = localize(mt)
mt = mt.filter(hl.is_missing(mt.info.END))
if (mt.row.dtype, info_key) not in _transform_variant_function_map:
def get_lgt(e, n_alleles, has_non_ref, row):
index = e.GT.unphased_diploid_gt_index()
n_no_nonref = n_alleles - hl.int(has_non_ref)
triangle_without_nonref = hl.triangle(n_no_nonref)
return (hl.case()
.when(e.GT.is_haploid(),
hl.or_missing(e.GT[0] < n_no_nonref, e.GT))
.when(index < triangle_without_nonref, e.GT)
.when(index < hl.triangle(n_alleles), hl.missing('call'))
.or_error('invalid GT ' + hl.str(e.GT) + ' at site ' + hl.str(row.locus)))
def make_entry_struct(e, alleles_len, has_non_ref, row):
handled_fields = dict()
handled_names = {'LA', 'gvcf_info',
'LAD', 'AD',
'LGT', 'GT',
'LPL', 'PL',
'LPGT', 'PGT'}
if 'GT' not in e:
raise hl.utils.FatalError("the Hail GVCF combiner expects GVCFs to have a 'GT' field in FORMAT.")
handled_fields['LA'] = hl.range(0, alleles_len - hl.if_else(has_non_ref, 1, 0))
handled_fields['LGT'] = get_lgt(e, alleles_len, has_non_ref, row)
if 'AD' in e:
handled_fields['LAD'] = hl.if_else(has_non_ref, e.AD[:-1], e.AD)
if 'PGT' in e:
handled_fields['LPGT'] = e.PGT
if 'PL' in e:
handled_fields['LPL'] = hl.if_else(has_non_ref,
hl.if_else(alleles_len > 2,
e.PL[:-alleles_len],
hl.missing(e.PL.dtype)),
hl.if_else(alleles_len > 1,
e.PL,
hl.missing(e.PL.dtype)))
handled_fields['RGQ'] = hl.if_else(
has_non_ref,
hl.if_else(e.GT.is_haploid(),
e.PL[alleles_len - 1],
e.PL[hl.call(0, alleles_len - 1).unphased_diploid_gt_index()]),
hl.missing(e.PL.dtype.element_type))
handled_fields['gvcf_info'] = (hl.case()
.when(hl.is_missing(row.info.END),
hl.struct(**(
parse_as_fields(
row.info.select(*info_to_keep),
has_non_ref)
)))
.or_missing())
pass_through_fields = {k: v for k, v in e.items() if k not in handled_names}
return hl.struct(**handled_fields, **pass_through_fields)
f = hl.experimental.define_function(
lambda row: hl.rbind(
hl.len(row.alleles), '<NON_REF>' == row.alleles[-1],
lambda alleles_len, has_non_ref: hl.struct(
locus=row.locus,
alleles=hl.if_else(has_non_ref, row.alleles[:-1], row.alleles),
rsid=row.rsid,
__entries=row.__entries.map(
lambda e: make_entry_struct(e, alleles_len, has_non_ref, row)))),
mt.row.dtype)
_transform_variant_function_map[mt.row.dtype, info_key] = f
transform_row = _transform_variant_function_map[mt.row.dtype, info_key]
return unlocalize(Table(TableMapRows(mt._tir, Apply(transform_row._name, transform_row._ret_type, TopLevelReference('row')))))
def make_reference_matrix_table(mt: MatrixTable,
entry_to_keep: Collection[str]
) -> MatrixTable:
mt = mt.filter_rows(hl.is_defined(mt.info.END))
entry_key = tuple(sorted(entry_to_keep)) # hashable stable value
def make_entry_struct(e, row):
handled_fields = dict()
# we drop PL by default, but if `entry_to_keep` has it then PL needs to be
# turned into LPL
handled_names = {'AD', 'PL'}
if 'AD' in entry_to_keep:
handled_fields['LAD'] = e['AD'][:1]
if 'PL' in entry_to_keep:
handled_fields['LPL'] = e['PL'][:1]
reference_fields = {k: v for k, v in e.items()
if k in entry_to_keep and k not in handled_names}
return (hl.case()
.when(e.GT.is_hom_ref(),
hl.struct(END=row.info.END, **reference_fields, **handled_fields))
.or_error('found END with non reference-genotype at' + hl.str(row.locus)))
mt = localize(mt)
if (mt.row.dtype, entry_key) not in _transform_reference_fuction_map:
f = hl.experimental.define_function(
lambda row: hl.struct(
locus=row.locus,
ref_allele=row.alleles[0][0],
__entries=row.__entries.map(
lambda e: make_entry_struct(e, row))),
mt.row.dtype)
_transform_reference_fuction_map[mt.row.dtype, entry_key] = f
transform_row = _transform_reference_fuction_map[mt.row.dtype, entry_key]
return unlocalize(Table(TableMapRows(mt._tir, Apply(transform_row._name, transform_row._ret_type, TopLevelReference('row')))))
def transform_one(mt, info_to_keep=[]) -> Table:
"""transforms a gvcf into a form suitable for combining
The input to this should be some result of either :func:`.import_vcf` or
:func:`.import_vcfs` with `array_elements_required=False`.
There is a strong assumption that this function will be called on a matrix
table with one column.
"""
if not info_to_keep:
info_to_keep = [name for name in mt.info if name not in ['END', 'DP']]
mt = localize(mt)
if mt.row.dtype not in _transform_rows_function_map:
f = hl.experimental.define_function(
lambda row: hl.rbind(
hl.len(row.alleles), '<NON_REF>' == row.alleles[-1],
lambda alleles_len, has_non_ref: hl.struct(
locus=row.locus,
alleles=hl.cond(has_non_ref, row.alleles[:-1], row.alleles),
rsid=row.rsid,
__entries=row.__entries.map(
lambda e:
hl.struct(
DP=e.DP,
END=row.info.END,
GQ=e.GQ,
LA=hl.range(0, alleles_len - hl.cond(has_non_ref, 1, 0)),
LAD=hl.cond(has_non_ref, e.AD[:-1], e.AD),
LGT=e.GT,
LPGT=e.PGT,
LPL=hl.cond(has_non_ref,
hl.cond(alleles_len > 2,
e.PL[:-alleles_len],
hl.null(e.PL.dtype)),
hl.cond(alleles_len > 1,
e.PL,
hl.null(e.PL.dtype))),
MIN_DP=e.MIN_DP,
PID=e.PID,
RGQ=hl.cond(
has_non_ref,
e.PL[hl.call(0, alleles_len - 1).unphased_diploid_gt_index()],
hl.null(e.PL.dtype.element_type)),
SB=e.SB,
gvcf_info=hl.case()
.when(hl.is_missing(row.info.END),
hl.struct(**(row.info.select(*info_to_keep))))
.or_missing()
))),
),
mt.row.dtype)
_transform_rows_function_map[mt.row.dtype] = f
transform_row = _transform_rows_function_map[mt.row.dtype]
return Table(TableMapRows(mt._tir, Apply(transform_row._name, transform_row._ret_type, TopLevelReference('row'))))