use crate::bin_table::{Row, Value};
use serde::Deserialize;
use serde::de::{DeserializeSeed, Error, MapAccess, Unexpected, Visitor};
use std::format;
struct Deserializer<'de> {
row: &'de Row<'de>,
field_offset: usize,
}
pub fn from_bin_table_row<'a, T: Deserialize<'a>>(row: &'a Row) -> crate::Result<T> {
let mut deserializer = Deserializer {
row,
field_offset: 0,
};
T::deserialize(&mut deserializer)
}
impl<'de, 'a> serde::de::Deserializer<'de> for &'a mut Deserializer<'de> {
type Error = crate::Error;
fn deserialize_any<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_bool<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_i8<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_i16<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_i32<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_i64<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
let key = &self.row.field_definitions[self.field_offset].2;
if let Some(value) = self.row.get(key)? {
if let Value::I64(value) = value {
visitor.visit_i64(*value.first().unwrap())
} else {
Err(crate::Error::invalid_type(
Unexpected::Other(&format!(
"{:?}",
self.row.field_definitions[self.field_offset].0
)),
&"f32",
))
}
} else {
Err(crate::Error::unknown_field(&key, &[]))
}
}
fn deserialize_u8<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_u16<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_u32<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_u64<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_f32<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
let key = &self.row.field_definitions[self.field_offset].2;
if let Some(value) = self.row.get(key)? {
if let Value::F32(value) = value {
visitor.visit_f32(*value.first().unwrap())
} else {
Err(crate::Error::invalid_type(
Unexpected::Other(&format!(
"{:?}",
self.row.field_definitions[self.field_offset].0
)),
&"f32",
))
}
} else {
Err(crate::Error::unknown_field(&key, &[]))
}
}
fn deserialize_f64<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
let key = &self.row.field_definitions[self.field_offset].2;
if let Some(value) = self.row.get(key)? {
if let Value::F64(value) = value {
visitor.visit_f64(*value.first().unwrap())
} else {
Err(crate::Error::invalid_type(
Unexpected::Other(&format!(
"{:?}",
self.row.field_definitions[self.field_offset].0
)),
&"f64",
))
}
} else {
Err(crate::Error::unknown_field(&key, &[]))
}
}
fn deserialize_char<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_str<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_string<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_bytes<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_byte_buf<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_option<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_unit<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_unit_struct<V>(
self,
_name: &'static str,
_visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_newtype_struct<V>(
self,
_name: &'static str,
_visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_seq<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_tuple<V>(self, _len: usize, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_tuple_struct<V>(
self,
_name: &'static str,
_len: usize,
_visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_map<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_map(RowAccess::new(self))
}
fn deserialize_struct<V>(
self,
_name: &'static str,
_fields: &'static [&'static str],
visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_map(visitor)
}
fn deserialize_enum<V>(
self,
_name: &'static str,
_variants: &'static [&'static str],
_visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
fn deserialize_identifier<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_borrowed_str(&self.row.field_definitions[self.field_offset].2)
}
fn deserialize_ignored_any<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
todo!()
}
}
struct RowAccess<'a, 'de: 'a> {
de: &'a mut Deserializer<'de>,
}
impl<'a, 'de> RowAccess<'a, 'de> {
pub fn new(de: &'a mut Deserializer<'de>) -> Self {
Self { de }
}
}
impl<'de, 'a> MapAccess<'de> for RowAccess<'a, 'de> {
type Error = crate::Error;
fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Self::Error>
where
K: DeserializeSeed<'de>,
{
if self.de.field_offset >= self.de.row.field_definitions.len() {
return Ok(None);
}
seed.deserialize(&mut *self.de).map(Some)
}
fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Self::Error>
where
V: DeserializeSeed<'de>,
{
let result = seed.deserialize(&mut *self.de);
self.de.field_offset += 1;
result
}
}