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use super::{Null, Type};
#[derive(Clone, Debug, PartialEq)]
pub enum Value {
Null,
Integer(i64),
Real(f64),
Text(String),
Blob(Vec<u8>),
}
impl From<Null> for Value {
fn from(_: Null) -> Value {
Value::Null
}
}
impl From<bool> for Value {
fn from(i: bool) -> Value {
Value::Integer(i as i64)
}
}
impl From<isize> for Value {
fn from(i: isize) -> Value {
Value::Integer(i as i64)
}
}
#[cfg(feature = "i128_blob")]
impl From<i128> for Value {
fn from(i: i128) -> Value {
use byteorder::{BigEndian, ByteOrder};
let mut buf = vec![0u8; 16];
BigEndian::write_i128(&mut buf, i ^ (1i128 << 127));
Value::Blob(buf)
}
}
#[cfg(feature = "uuid")]
impl From<uuid::Uuid> for Value {
fn from(id: uuid::Uuid) -> Value {
Value::Blob(id.as_bytes().to_vec())
}
}
macro_rules! from_i64(
($t:ty) => (
impl From<$t> for Value {
fn from(i: $t) -> Value {
Value::Integer(i64::from(i))
}
}
)
);
from_i64!(i8);
from_i64!(i16);
from_i64!(i32);
from_i64!(u8);
from_i64!(u16);
from_i64!(u32);
impl From<i64> for Value {
fn from(i: i64) -> Value {
Value::Integer(i)
}
}
impl From<f64> for Value {
fn from(f: f64) -> Value {
Value::Real(f)
}
}
impl From<String> for Value {
fn from(s: String) -> Value {
Value::Text(s)
}
}
impl From<Vec<u8>> for Value {
fn from(v: Vec<u8>) -> Value {
Value::Blob(v)
}
}
impl Value {
pub fn data_type(&self) -> Type {
match *self {
Value::Null => Type::Null,
Value::Integer(_) => Type::Integer,
Value::Real(_) => Type::Real,
Value::Text(_) => Type::Text,
Value::Blob(_) => Type::Blob,
}
}
}