use crate::err::Error;
use crate::index::Index;
use crate::statements::DefineIndexStatement;
use crate::value::serde::ser;
use crate::Ident;
use crate::Idioms;
use crate::Strand;
use ser::Serializer as _;
use serde::ser::Error as _;
use serde::ser::Impossible;
use serde::ser::Serialize;
pub struct Serializer;
impl ser::Serializer for Serializer {
type Ok = DefineIndexStatement;
type Error = Error;
type SerializeSeq = Impossible<DefineIndexStatement, Error>;
type SerializeTuple = Impossible<DefineIndexStatement, Error>;
type SerializeTupleStruct = Impossible<DefineIndexStatement, Error>;
type SerializeTupleVariant = Impossible<DefineIndexStatement, Error>;
type SerializeMap = Impossible<DefineIndexStatement, Error>;
type SerializeStruct = SerializeDefineIndexStatement;
type SerializeStructVariant = Impossible<DefineIndexStatement, Error>;
const EXPECTED: &'static str = "a struct `DefineIndexStatement`";
#[inline]
fn serialize_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeStruct, Error> {
Ok(SerializeDefineIndexStatement::default())
}
}
#[derive(Default)]
pub struct SerializeDefineIndexStatement {
name: Ident,
what: Ident,
cols: Idioms,
index: Index,
comment: Option<Strand>,
}
impl serde::ser::SerializeStruct for SerializeDefineIndexStatement {
type Ok = DefineIndexStatement;
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<(), Error>
where
T: ?Sized + Serialize,
{
match key {
"name" => {
self.name = Ident(value.serialize(ser::string::Serializer.wrap())?);
}
"what" => {
self.what = Ident(value.serialize(ser::string::Serializer.wrap())?);
}
"cols" => {
self.cols = Idioms(value.serialize(ser::idiom::vec::Serializer.wrap())?);
}
"index" => {
self.index = value.serialize(ser::index::Serializer.wrap())?;
}
"comment" => {
self.comment = value.serialize(ser::strand::opt::Serializer.wrap())?;
}
key => {
return Err(Error::custom(format!(
"unexpected field `DefineIndexStatement::{key}`"
)));
}
}
Ok(())
}
fn end(self) -> Result<Self::Ok, Error> {
Ok(DefineIndexStatement {
name: self.name,
what: self.what,
cols: self.cols,
index: self.index,
comment: self.comment,
})
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn default() {
let stmt = DefineIndexStatement::default();
let value: DefineIndexStatement = stmt.serialize(Serializer.wrap()).unwrap();
assert_eq!(value, stmt);
}
}