Merge pull request #1238 from gwenn/debug_row

Impl Debug for Row
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gwenn 2022-11-11 15:08:22 +01:00 committed by GitHub
commit d542b23181
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@ -360,6 +360,46 @@ impl<'stmt> AsRef<Statement<'stmt>> for Row<'stmt> {
}
}
/// Debug `Row` like an ordered `Map<Result<&str>, Result<(Type, ValueRef)>>`
/// with column name as key except that for `Type::Blob` only its size is
/// printed (not its content).
impl<'stmt> std::fmt::Debug for Row<'stmt> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let mut dm = f.debug_map();
for c in 0..self.stmt.column_count() {
let name = self.stmt.column_name(c);
dm.key(&name);
let value = self.get_ref(c);
match value {
Ok(value) => {
let dt = value.data_type();
match value {
ValueRef::Null => {
dm.value(&(dt, ()));
}
ValueRef::Integer(i) => {
dm.value(&(dt, i));
}
ValueRef::Real(f) => {
dm.value(&(dt, f));
}
ValueRef::Text(s) => {
dm.value(&(dt, String::from_utf8_lossy(s)));
}
ValueRef::Blob(b) => {
dm.value(&(dt, b.len()));
}
}
}
Err(ref _err) => {
dm.value(&value);
}
}
}
dm.finish()
}
}
mod sealed {
/// This trait exists just to ensure that the only impls of `trait Params`
/// that are allowed are ones in this crate.