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Merge pull request #254 from jgallagher/add-fromsql-isize

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Add FromSql/ToSql impls for isize.
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John Gallagher 2017-04-05 13:09:26 -04:00 committed by GitHub
commit 83d9817905
4 changed files with 15 additions and 0 deletions
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4
Changelog.md
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@ -1,3 +1,7 @@
# Version 0.10.2 (UPCOMING)
* Adds `FromSql` and `ToSql` impls for `isize`. Documents why `usize` and `u64` are not included.
# Version 0.10.1 (2017-03-03) # Version 0.10.1 (2017-03-03)
* Updates the `bundled` SQLite version to 3.17.0. * Updates the `bundled` SQLite version to 3.17.0.

9
src/types/from_sql.rs
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@ -49,6 +49,14 @@ impl Error for FromSqlError {
pub type FromSqlResult<T> = Result<T, FromSqlError>; pub type FromSqlResult<T> = Result<T, FromSqlError>;
/// A trait for types that can be created from a SQLite value. /// A trait for types that can be created from a SQLite value.
///
/// Note that `FromSql` and `ToSql` are defined for most integral types, but not `u64` or `usize`.
/// This is intentional; SQLite returns integers as signed 64-bit values, which cannot fully
/// represent the range of these types. Rusqlite would have to decide how to handle negative
/// values: return an error or reinterpret as a very large postive numbers, neither of which is
/// guaranteed to be correct for everyone. Callers can work around this by fetching values as i64
/// and then doing the interpretation themselves or by defining a newtype and implementing
/// `FromSql`/`ToSql` for it.
pub trait FromSql: Sized { pub trait FromSql: Sized {
fn column_result(value: ValueRef) -> FromSqlResult<Self>; fn column_result(value: ValueRef) -> FromSqlResult<Self>;
} }
@ -72,6 +80,7 @@ macro_rules! from_sql_integral(
from_sql_integral!(i8); from_sql_integral!(i8);
from_sql_integral!(i16); from_sql_integral!(i16);
from_sql_integral!(i32); from_sql_integral!(i32);
from_sql_integral!(isize);
from_sql_integral!(u8); from_sql_integral!(u8);
from_sql_integral!(u16); from_sql_integral!(u16);
from_sql_integral!(u32); from_sql_integral!(u32);

1
src/types/to_sql.rs
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@ -74,6 +74,7 @@ to_sql_self!(i8);
to_sql_self!(i16); to_sql_self!(i16);
to_sql_self!(i32); to_sql_self!(i32);
to_sql_self!(i64); to_sql_self!(i64);
to_sql_self!(isize);
to_sql_self!(u8); to_sql_self!(u8);
to_sql_self!(u16); to_sql_self!(u16);
to_sql_self!(u32); to_sql_self!(u32);

1
src/types/value.rs
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@ -43,6 +43,7 @@ macro_rules! from_i64(
from_i64!(i8); from_i64!(i8);
from_i64!(i16); from_i64!(i16);
from_i64!(i32); from_i64!(i32);
from_i64!(isize);
from_i64!(u8); from_i64!(u8);
from_i64!(u16); from_i64!(u16);
from_i64!(u32); from_i64!(u32);