Bump editions to 2021. (#198)

* Bump tskit-derive version to 0.2.0 to match edition change.
* Update to new 2021 prelude

Closes #193

Author: molpopgen

Cargo.toml

@@ -3,7 +3,7 @@ name = "tskit"
 version = "0.6.1"
 authors = ["tskit developers <[email protected]>"]
 build = "build.rs"
-edition = "2018"
+edition = "2021"
 description = "rust interface to tskit"
 license = "MIT"
 homepage = "https://github.com/tskit-dev/tskit-rust"
@@ -24,7 +24,7 @@ humantime = {version = "2.1.0", optional = true}
 serde = {version = "1.0.118", features = ["derive"], optional = true}
 serde_json = {version = "1.0.67", optional = true}
 bincode = {version = "1.3.1", optional = true}
-tskit-derive = {version = "0.1.0", path = "tskit-derive", optional = true}
+tskit-derive = {version = "0.2.0", path = "tskit-derive", optional = true}
 
 [dev-dependencies]
 clap = "~2.34.0"

src/_macros.rs

@@ -46,7 +46,6 @@ macro_rules! unsafe_tsk_column_access {
 
 macro_rules! unsafe_tsk_ragged_column_access {
     ($i: expr, $lo: expr, $hi: expr, $array: expr, $offset_array: expr, $offset_array_len: expr) => {{
-        use std::convert::TryFrom;
         let i = crate::SizeType::try_from($i)?;
         if $i < $lo || i >= $hi {
             Err(TskitError::IndexError {})
@@ -72,7 +71,6 @@ macro_rules! unsafe_tsk_ragged_column_access {
     }};
 
     ($i: expr, $lo: expr, $hi: expr, $array: expr, $offset_array: expr, $offset_array_len: expr, $output_id_type: expr) => {{
-        use std::convert::TryFrom;
         let i = crate::SizeType::try_from($i)?;
         if $i < $lo || i >= $hi {
             Err(TskitError::IndexError {})
@@ -103,7 +101,6 @@ macro_rules! unsafe_tsk_ragged_column_access {
 #[allow(unused_macros)]
 macro_rules! unsafe_tsk_ragged_char_column_access {
     ($i: expr, $lo: expr, $hi: expr, $array: expr, $offset_array: expr, $offset_array_len: expr) => {{
-        use std::convert::TryFrom;
         let i = crate::SizeType::try_from($i)?;
         if $i < $lo || i >= $hi {
             Err(TskitError::IndexError {})
@@ -305,7 +302,7 @@ macro_rules! impl_id_traits {
             }
         }
 
-        impl std::convert::TryFrom<$idtype> for crate::SizeType {
+        impl TryFrom<$idtype> for crate::SizeType {
             type Error = crate::TskitError;
 
             fn try_from(value: $idtype) -> Result<Self, Self::Error> {

src/edge_table.rs

@@ -25,7 +25,6 @@ impl PartialEq for EdgeTableRow {
 }
 
 fn make_edge_table_row(table: &EdgeTable, pos: tsk_id_t) -> Option<EdgeTableRow> {
-    use std::convert::TryFrom;
     // panic is okay here, as we are handling a bad
     // input value before we first call this to
     // set up the iterator

src/individual_table.rs

@@ -49,7 +49,6 @@ pub struct IndividualTable<'a> {
 }
 
 fn make_individual_table_row(table: &IndividualTable, pos: tsk_id_t) -> Option<IndividualTableRow> {
-    use std::convert::TryFrom;
     // panic is okay here, as we are handling a bad
     // input value before we first call this to
     // set up the iterator

src/lib.rs

@@ -286,7 +286,7 @@ impl From<usize> for SizeType {
     }
 }
 
-impl std::convert::TryFrom<tsk_id_t> for SizeType {
+impl TryFrom<tsk_id_t> for SizeType {
     type Error = crate::TskitError;
 
     fn try_from(value: tsk_id_t) -> Result<Self, Self::Error> {
@@ -297,7 +297,7 @@ impl std::convert::TryFrom<tsk_id_t> for SizeType {
     }
 }
 
-impl std::convert::TryFrom<SizeType> for tsk_id_t {
+impl TryFrom<SizeType> for tsk_id_t {
     type Error = crate::TskitError;
 
     fn try_from(value: SizeType) -> Result<Self, Self::Error> {

src/metadata.rs

@@ -313,7 +313,6 @@ mod tests {
             Ok(rv)
         }
         fn decode(md: &[u8]) -> Result<Self, MetadataError> {
-            use std::convert::TryInto;
             let (x_int_bytes, rest) = md.split_at(std::mem::size_of::<i32>());
             let (y_int_bytes, _) = rest.split_at(std::mem::size_of::<u32>());
             Ok(Self {

src/migration_table.rs

@@ -30,7 +30,6 @@ impl PartialEq for MigrationTableRow {
 }
 
 fn make_migration_table_row(table: &MigrationTable, pos: tsk_id_t) -> Option<MigrationTableRow> {
-    use std::convert::TryFrom;
     // panic is okay here, as we are handling a bad
     // input value before we first call this to
     // set up the iterator

src/mutation_table.rs

@@ -28,7 +28,6 @@ impl PartialEq for MutationTableRow {
 }
 
 fn make_mutation_table_row(table: &MutationTable, pos: tsk_id_t) -> Option<MutationTableRow> {
-    use std::convert::TryFrom;
     // panic is okay here, as we are handling a bad
     // input value before we first call this to
     // set up the iterator

src/node_table.rs

@@ -26,7 +26,6 @@ impl PartialEq for NodeTableRow {
 }
 
 fn make_node_table_row(table: &NodeTable, pos: tsk_id_t) -> Option<NodeTableRow> {
-    use std::convert::TryFrom;
     // panic is okay here, as we are handling a bad
     // input value before we first call this to
     // set up the iterator

src/population_table.rs

@@ -19,7 +19,6 @@ impl PartialEq for PopulationTableRow {
 }
 
 fn make_population_table_row(table: &PopulationTable, pos: tsk_id_t) -> Option<PopulationTableRow> {
-    use std::convert::TryFrom;
     // panic is okay here, as we are handling a bad
     // input value before we first call this to
     // set up the iterator