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// Copyright 2017, Igor Shaula
// Licensed under the MIT License <LICENSE or
// may not be copied, modified, or distributed
// except according to those terms.
use super::super::FromRegValue;
use super::{
DecodeResult, Decoder, DecoderEnumerationState, DecoderError, DecoderReadingState, DECODER_SAM,
};
use serde::de::*;
use std::fmt;
use std::mem;
impl Error for DecoderError {
fn custom<T: fmt::Display>(msg: T) -> Self {
DecoderError::DeserializerError(format!("{}", msg))
}
}
impl<'de, 'a> Deserializer<'de> for &'a mut Decoder {
type Error = DecoderError;
fn deserialize_any<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
use self::DecoderEnumerationState::*;
match self.enumeration_state {
EnumeratingKeys(..) => no_impl!("deserialize_any for keys"),
EnumeratingValues(..) => {
let s = self.f_name.as_ref().ok_or(DecoderError::NoFieldName)?;
let v = self.key.get_raw_value(s)?;
use RegType::*;
match v.vtype {
REG_SZ | REG_EXPAND_SZ | REG_MULTI_SZ => {
visitor.visit_string(String::from_reg_value(&v)?)
}
REG_DWORD => visitor.visit_u32(u32::from_reg_value(&v)?),
REG_QWORD => visitor.visit_u64(u64::from_reg_value(&v)?),
_ => Err(DecoderError::DecodeNotImplemented(
"value type deserialization not implemented".to_owned(),
)),
}
}
}
}
fn deserialize_bool<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_bool(read_value!(self).map(|v: u32| v > 0)?)
}
fn deserialize_u8<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
self.deserialize_u32(visitor)
}
fn deserialize_u16<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
self.deserialize_u32(visitor)
}
fn deserialize_u32<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_u32(read_value!(self)?)
}
fn deserialize_u64<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_u64(read_value!(self)?)
}
fn deserialize_i8<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_i8(parse_string!(self)?)
}
fn deserialize_i16<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_i16(parse_string!(self)?)
}
fn deserialize_i32<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_i32(parse_string!(self)?)
}
fn deserialize_i64<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_i64(parse_string!(self)?)
}
fn deserialize_f32<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_f32(parse_string!(self)?)
}
fn deserialize_f64<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_f64(parse_string!(self)?)
}
fn deserialize_char<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
self.deserialize_string(visitor)
}
fn deserialize_str<V>(self, _visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
no_impl!("deserialize_str")
}
fn deserialize_string<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
use self::DecoderReadingState::*;
match self.reading_state {
WaitingForKey => {
let s = self.f_name.as_ref().ok_or(DecoderError::NoFieldName)?;
visitor.visit_string(s.clone())
}
WaitingForValue => visitor.visit_string(read_value!(self)?),
}
}
fn deserialize_bytes<V>(self, _visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
no_impl!("deserialize_bytes")
}
fn deserialize_byte_buf<V>(self, _visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
no_impl!("deserialize_byte_buf")
}
fn deserialize_option<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
let v = {
let s = self.f_name.as_ref().ok_or(DecoderError::NoFieldName)?;
self.key.get_raw_value(s)
};
match v {
Ok(..) => visitor.visit_some(&mut *self),
Err(..) => visitor.visit_none(),
}
}
fn deserialize_unit<V>(self, _visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
no_impl!("deserialize_unit")
}
fn deserialize_unit_struct<V>(self, _name: &'static str, _visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
no_impl!("deserialize_unit_struct")
}
fn deserialize_newtype_struct<V>(
self,
_name: &'static str,
_visitor: V,
) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
no_impl!("deserialize_newtype_struct")
}
fn deserialize_seq<V>(self, _visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
no_impl!("deserialize_seq")
}
fn deserialize_tuple<V>(self, _len: usize, _visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
no_impl!("deserialize_tuple")
}
fn deserialize_tuple_struct<V>(
self,
_name: &'static str,
_len: usize,
_visitor: V,
) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
no_impl!("deserialize_tuple_struct")
}
fn deserialize_map<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_map(self)
}
fn deserialize_struct<V>(
self,
_name: &'static str,
_fields: &'static [&'static str],
visitor: V,
) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
visitor.visit_map(self)
}
fn deserialize_identifier<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
self.deserialize_string(visitor)
}
fn deserialize_enum<V>(
self,
_name: &'static str,
_variants: &'static [&'static str],
_visitor: V,
) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
no_impl!("deserialize_enum")
}
fn deserialize_ignored_any<V>(self, visitor: V) -> DecodeResult<V::Value>
where
V: Visitor<'de>,
{
self.deserialize_any(visitor)
}
}
impl<'de, 'a> MapAccess<'de> for Decoder {
type Error = DecoderError;
fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Self::Error>
where
K: DeserializeSeed<'de>,
{
self.reading_state = DecoderReadingState::WaitingForKey;
use self::DecoderEnumerationState::*;
match self.enumeration_state {
EnumeratingKeys(index) => match self.key.enum_key(index) {
Some(res) => {
self.f_name = Some(res?);
self.enumeration_state = EnumeratingKeys(index + 1);
seed.deserialize(&mut *self).map(Some)
}
None => {
self.enumeration_state = EnumeratingValues(0);
self.next_key_seed(seed)
}
},
EnumeratingValues(index) => {
let next_value = self.key.enum_value(index);
match next_value {
Some(res) => {
self.f_name = Some(res?.0);
self.enumeration_state = EnumeratingValues(index + 1);
seed.deserialize(&mut *self).map(Some)
}
None => Ok(None),
}
}
}
}
fn next_value_seed<V>(&mut self, seed: V) -> Result<V::Value, Self::Error>
where
V: DeserializeSeed<'de>,
{
self.reading_state = DecoderReadingState::WaitingForValue;
use self::DecoderEnumerationState::*;
match self.enumeration_state {
EnumeratingKeys(..) => {
let f_name = self.f_name.as_ref().ok_or(DecoderError::NoFieldName)?;
match self.key.open_subkey_with_flags(f_name, DECODER_SAM) {
Ok(subkey) => {
let mut nested = Decoder::new(subkey);
seed.deserialize(&mut nested)
}
Err(err) => Err(DecoderError::IoError(err)),
}
}
EnumeratingValues(..) => seed.deserialize(&mut *self),
}
}
}