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use ::std::io::Write;
pub trait FromValue
{
fn serialize(&self, to: &mut Write)
-> ::std::io::Result<()>;
}
impl FromValue for f64
{
fn serialize(&self, to: &mut Write)
-> ::std::io::Result<()>
{
write!(to, "{:.17}", self)?;
Ok(())
}
}
impl FromValue for f32
{
fn serialize(&self, to: &mut Write)
-> ::std::io::Result<()>
{
write!(to, "{:.17}", self)?;
Ok(())
}
}
impl FromValue for u64
{
fn serialize(&self, to: &mut Write)
-> ::std::io::Result<()>
{
write!(to, "{}", self)?;
Ok(())
}
}
impl FromValue for u32
{
fn serialize(&self, to: &mut Write)
-> ::std::io::Result<()>
{
write!(to, "{}", self)?;
Ok(())
}
}
impl FromValue for i64
{
fn serialize(&self, to: &mut Write)
-> ::std::io::Result<()>
{
write!(to, "{}", self)?;
Ok(())
}
}
impl FromValue for i32
{
fn serialize(&self, to: &mut Write)
-> ::std::io::Result<()>
{
write!(to, "{}", self)?;
Ok(())
}
}
pub struct Column<'v>
{
pub(crate) serialized: &'v str,
}
impl<'v> Column<'v>
{
pub fn from_checked<Type: ToValue>(&self)
-> Option<Type>
{
Type::from_checked(self.serialized)
}
pub fn from<Type: ToValue>(&self)
-> Type
{
self.from_checked().unwrap()
}
pub(crate) fn copy(&self) -> OwnedColumn
{
OwnedColumn
{
serialized: self.serialized.to_owned(),
}
}
}
impl<'v> ::std::fmt::Display for Column<'v>
{
fn fmt(&self, f: &mut ::std::fmt::Formatter)
-> ::std::fmt::Result
{
write!(f, "{}", self.serialized)
}
}
#[derive(Debug,Clone)]
pub struct OwnedColumn
{
pub(crate) serialized: String,
}
impl ::std::fmt::Display for OwnedColumn
{
fn fmt(&self, f: &mut ::std::fmt::Formatter)
-> ::std::fmt::Result
{
write!(f, "{}", self.serialized)
}
}
impl OwnedColumn
{
pub fn from_checked<Type: ToValue>(&self)
-> Option<Type>
{
Type::from_checked(&self.serialized)
}
pub fn from<Type: ToValue>(&self)
-> Type
{
self.from_checked().unwrap()
}
}
pub trait ToValue: Sized
{
fn from_checked(serialifrzed: &str)
-> Option<Self>;
fn from(serialized: &str) -> Self
{
Self::from_checked(serialized).unwrap()
}
}
impl ToValue for f64
{
fn from_checked(serialized: &str)
-> Option<Self>
{
serialized.parse().ok()
}
}
impl ToValue for f32
{
fn from_checked(serialized: &str)
-> Option<Self>
{
serialized.parse().ok()
}
}
impl ToValue for u64
{
fn from_checked(serialized: &str)
-> Option<Self>
{
serialized.parse().ok()
}
}
impl ToValue for u32
{
fn from_checked(serialized: &str)
-> Option<Self>
{
serialized.parse().ok()
}
}
impl ToValue for i64
{
fn from_checked(serialized: &str)
-> Option<Self>
{
serialized.parse().ok()
}
}
impl ToValue for i32
{
fn from_checked(serialized: &str)
-> Option<Self>
{
serialized.parse().ok()
}
}