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use crate::bindings as ll_bindings;
use crate::metadata;
use crate::{tsk_id_t, tsk_size_t, TskitError};
/// Row of an [`EdgeTable`]
pub struct EdgeTableRow {
pub id: tsk_id_t,
pub left: f64,
pub right: f64,
pub parent: tsk_id_t,
pub child: tsk_id_t,
pub metadata: Option<Vec<u8>>,
}
impl PartialEq for EdgeTableRow {
fn eq(&self, other: &Self) -> bool {
self.id == other.id
&& self.parent == other.parent
&& self.child == other.child
&& crate::util::f64_partial_cmp_equal(&self.left, &other.left)
&& crate::util::f64_partial_cmp_equal(&self.right, &other.right)
&& self.metadata == other.metadata
}
}
fn make_edge_table_row(
table: &EdgeTable,
pos: tsk_id_t,
decode_metadata: bool,
) -> Option<EdgeTableRow> {
if pos < table.num_rows() as tsk_id_t {
let rv = EdgeTableRow {
id: pos,
left: table.left(pos).unwrap(),
right: table.right(pos).unwrap(),
parent: table.parent(pos).unwrap(),
child: table.child(pos).unwrap(),
metadata: match decode_metadata {
true => match metadata_to_vector!(table, pos).unwrap() {
Some(x) => Some(x),
None => None,
},
false => None,
},
};
Some(rv)
} else {
None
}
}
pub type EdgeTableRefIterator<'a> = crate::table_iterator::TableIterator<&'a EdgeTable<'a>>;
pub type EdgeTableIterator<'a> = crate::table_iterator::TableIterator<EdgeTable<'a>>;
impl<'a> Iterator for EdgeTableRefIterator<'a> {
type Item = EdgeTableRow;
fn next(&mut self) -> Option<Self::Item> {
let rv = make_edge_table_row(self.table, self.pos, self.decode_metadata);
self.pos += 1;
rv
}
}
impl<'a> Iterator for EdgeTableIterator<'a> {
type Item = EdgeTableRow;
fn next(&mut self) -> Option<Self::Item> {
let rv = make_edge_table_row(&self.table, self.pos, self.decode_metadata);
self.pos += 1;
rv
}
}
/// An immutable view of an edge table.
///
/// These are not created directly.
/// Instead, use [`TableCollection::edges`](crate::TableCollection::edges)
/// to get a reference to an existing edge table;
pub struct EdgeTable<'a> {
table_: &'a ll_bindings::tsk_edge_table_t,
}
impl<'a> EdgeTable<'a> {
pub(crate) fn new_from_table(edges: &'a ll_bindings::tsk_edge_table_t) -> Self {
EdgeTable { table_: edges }
}
/// Return the number of rows
pub fn num_rows(&'a self) -> tsk_size_t {
self.table_.num_rows
}
/// Return the ``parent`` value from row ``row`` of the table.
///
/// # Errors
///
/// Will return [``IndexError``](crate::TskitError::IndexError)
/// if ``row`` is out of range.
pub fn parent(&'a self, row: tsk_id_t) -> Result<tsk_id_t, TskitError> {
unsafe_tsk_column_access!(row, 0, self.num_rows(), self.table_.parent)
}
/// Return the ``child`` value from row ``row`` of the table.
///
/// # Errors
///
/// Will return [``IndexError``](crate::TskitError::IndexError)
/// if ``row`` is out of range.
pub fn child(&'a self, row: tsk_id_t) -> Result<tsk_id_t, TskitError> {
unsafe_tsk_column_access!(row, 0, self.num_rows(), self.table_.child)
}
/// Return the ``left`` value from row ``row`` of the table.
///
/// # Errors
///
/// Will return [``IndexError``](crate::TskitError::IndexError)
/// if ``row`` is out of range.
pub fn left(&'a self, row: tsk_id_t) -> Result<f64, TskitError> {
unsafe_tsk_column_access!(row, 0, self.num_rows(), self.table_.left)
}
/// Return the ``right`` value from row ``row`` of the table.
///
/// # Errors
///
/// Will return [``IndexError``](crate::TskitError::IndexError)
/// if ``row`` is out of range.
pub fn right(&'a self, row: tsk_id_t) -> Result<f64, TskitError> {
unsafe_tsk_column_access!(row, 0, self.num_rows(), self.table_.right)
}
pub fn metadata<T: metadata::MetadataRoundtrip>(
&'a self,
row: tsk_id_t,
) -> Result<Option<T>, TskitError> {
let buffer = metadata_to_vector!(self, row)?;
decode_metadata_row!(T, buffer)
}
/// Return an iterator over rows of the table.
/// The value of the iterator is [`EdgeTableRow`].
///
/// # Parameters
///
/// * `decode_metadata`: if `true`, then a *copy* of row metadata
/// will be provided in [`EdgeTableRow::metadata`].
/// The meta data are *not* decoded.
/// Rows with no metadata will contain the value `None`.
///
pub fn iter(&self, decode_metadata: bool) -> EdgeTableRefIterator {
crate::table_iterator::make_table_iterator::<&EdgeTable<'a>>(&self, decode_metadata)
}
/// Return row `r` of the table.
///
/// # Parameters
///
/// * `r`: the row id.
/// * `decode_metadata`: if `true`, then a *copy* of row metadata
/// will be provided in [`EdgeTableRow::metadata`].
/// The meta data are *not* decoded.
/// Rows with no metadata will contain the value `None`.
///
/// # Errors
///
/// [`TskitError::IndexError`] if `r` is out of range.
pub fn row(&self, r: tsk_id_t, decode_metadata: bool) -> Result<EdgeTableRow, TskitError> {
table_row_access!(r, decode_metadata, self, make_edge_table_row)
}
}