use xsd_parser::{
quick_xml::{Error, WithDeserializer, WithSerializer},
schema::Namespace,
};
pub const NS_XS: Namespace = Namespace::new_const(b"http://www.w3.org/2001/XMLSchema");
pub const NS_XML: Namespace = Namespace::new_const(b"http://www.w3.org/XML/1998/namespace");
pub const NS_TNS: Namespace = Namespace::new_const(b"http://example.com");
pub type Foo = FooType;
#[derive(Debug)]
pub struct FooType {
pub b: i32,
pub c: String,
pub a: f32,
}
impl WithSerializer for FooType {
type Serializer<'x> = quick_xml_serialize::FooTypeSerializer<'x>;
fn serializer<'ser>(
&'ser self,
name: Option<&'ser str>,
is_root: bool,
) -> Result<Self::Serializer<'ser>, Error> {
Ok(quick_xml_serialize::FooTypeSerializer {
value: self,
state: Box::new(quick_xml_serialize::FooTypeSerializerState::Init__),
name: name.unwrap_or("tns:FooType"),
is_root,
})
}
}
impl WithDeserializer for FooType {
type Deserializer = quick_xml_deserialize::FooTypeDeserializer;
}
pub mod quick_xml_deserialize {
use core::mem::replace;
use xsd_parser::quick_xml::{
filter_xmlns_attributes, BytesStart, DeserializeReader, Deserializer, DeserializerArtifact,
DeserializerEvent, DeserializerOutput, DeserializerResult, ElementHandlerOutput, Error,
ErrorKind, Event, RawByteStr, WithDeserializer,
};
#[derive(Debug)]
pub struct FooTypeDeserializer {
b: Option<i32>,
c: Option<String>,
a: Option<f32>,
state: Box<FooTypeDeserializerState>,
}
#[derive(Debug)]
enum FooTypeDeserializerState {
Init__,
B(Option<<i32 as WithDeserializer>::Deserializer>),
C(Option<<String as WithDeserializer>::Deserializer>),
A(Option<<f32 as WithDeserializer>::Deserializer>),
Done__,
Unknown__,
}
impl FooTypeDeserializer {
fn from_bytes_start<R>(reader: &R, bytes_start: &BytesStart<'_>) -> Result<Self, Error>
where
R: DeserializeReader,
{
for attrib in filter_xmlns_attributes(bytes_start) {
let attrib = attrib?;
reader.raise_unexpected_attrib(attrib)?;
}
Ok(Self {
b: None,
c: None,
a: None,
state: Box::new(FooTypeDeserializerState::Init__),
})
}
fn finish_state<R>(
&mut self,
reader: &R,
state: FooTypeDeserializerState,
) -> Result<(), Error>
where
R: DeserializeReader,
{
use FooTypeDeserializerState as S;
match state {
S::B(Some(deserializer)) => self.store_b(deserializer.finish(reader)?)?,
S::C(Some(deserializer)) => self.store_c(deserializer.finish(reader)?)?,
S::A(Some(deserializer)) => self.store_a(deserializer.finish(reader)?)?,
_ => (),
}
Ok(())
}
fn store_b(&mut self, value: i32) -> Result<(), Error> {
if self.b.is_some() {
Err(ErrorKind::DuplicateElement(RawByteStr::from_slice(b"b")))?;
}
self.b = Some(value);
Ok(())
}
fn store_c(&mut self, value: String) -> Result<(), Error> {
if self.c.is_some() {
Err(ErrorKind::DuplicateElement(RawByteStr::from_slice(b"c")))?;
}
self.c = Some(value);
Ok(())
}
fn store_a(&mut self, value: f32) -> Result<(), Error> {
if self.a.is_some() {
Err(ErrorKind::DuplicateElement(RawByteStr::from_slice(b"a")))?;
}
self.a = Some(value);
Ok(())
}
fn handle_b<'de, R>(
&mut self,
reader: &R,
output: DeserializerOutput<'de, i32>,
fallback: &mut Option<FooTypeDeserializerState>,
) -> Result<ElementHandlerOutput<'de>, Error>
where
R: DeserializeReader,
{
let DeserializerOutput {
artifact,
event,
allow_any,
} = output;
if artifact.is_none() {
if self.b.is_some() {
fallback.get_or_insert(FooTypeDeserializerState::B(None));
*self.state = FooTypeDeserializerState::C(None);
return Ok(ElementHandlerOutput::from_event(event, allow_any));
} else {
*self.state = FooTypeDeserializerState::B(None);
return Ok(ElementHandlerOutput::break_(event, allow_any));
}
}
if let Some(fallback) = fallback.take() {
self.finish_state(reader, fallback)?;
}
Ok(match artifact {
DeserializerArtifact::None => unreachable!(),
DeserializerArtifact::Data(data) => {
self.store_b(data)?;
*self.state = FooTypeDeserializerState::C(None);
ElementHandlerOutput::from_event(event, allow_any)
}
DeserializerArtifact::Deserializer(deserializer) => {
let ret = ElementHandlerOutput::from_event(event, allow_any);
match &ret {
ElementHandlerOutput::Continue { .. } => {
fallback.get_or_insert(FooTypeDeserializerState::B(Some(deserializer)));
*self.state = FooTypeDeserializerState::C(None);
}
ElementHandlerOutput::Break { .. } => {
*self.state = FooTypeDeserializerState::B(Some(deserializer));
}
}
ret
}
})
}
fn handle_c<'de, R>(
&mut self,
reader: &R,
output: DeserializerOutput<'de, String>,
fallback: &mut Option<FooTypeDeserializerState>,
) -> Result<ElementHandlerOutput<'de>, Error>
where
R: DeserializeReader,
{
let DeserializerOutput {
artifact,
event,
allow_any,
} = output;
if artifact.is_none() {
if self.c.is_some() {
fallback.get_or_insert(FooTypeDeserializerState::C(None));
*self.state = FooTypeDeserializerState::A(None);
return Ok(ElementHandlerOutput::from_event(event, allow_any));
} else {
*self.state = FooTypeDeserializerState::C(None);
return Ok(ElementHandlerOutput::break_(event, allow_any));
}
}
if let Some(fallback) = fallback.take() {
self.finish_state(reader, fallback)?;
}
Ok(match artifact {
DeserializerArtifact::None => unreachable!(),
DeserializerArtifact::Data(data) => {
self.store_c(data)?;
*self.state = FooTypeDeserializerState::A(None);
ElementHandlerOutput::from_event(event, allow_any)
}
DeserializerArtifact::Deserializer(deserializer) => {
let ret = ElementHandlerOutput::from_event(event, allow_any);
match &ret {
ElementHandlerOutput::Continue { .. } => {
fallback.get_or_insert(FooTypeDeserializerState::C(Some(deserializer)));
*self.state = FooTypeDeserializerState::A(None);
}
ElementHandlerOutput::Break { .. } => {
*self.state = FooTypeDeserializerState::C(Some(deserializer));
}
}
ret
}
})
}
fn handle_a<'de, R>(
&mut self,
reader: &R,
output: DeserializerOutput<'de, f32>,
fallback: &mut Option<FooTypeDeserializerState>,
) -> Result<ElementHandlerOutput<'de>, Error>
where
R: DeserializeReader,
{
let DeserializerOutput {
artifact,
event,
allow_any,
} = output;
if artifact.is_none() {
if self.a.is_some() {
fallback.get_or_insert(FooTypeDeserializerState::A(None));
*self.state = FooTypeDeserializerState::Done__;
return Ok(ElementHandlerOutput::from_event(event, allow_any));
} else {
*self.state = FooTypeDeserializerState::A(None);
return Ok(ElementHandlerOutput::break_(event, allow_any));
}
}
if let Some(fallback) = fallback.take() {
self.finish_state(reader, fallback)?;
}
Ok(match artifact {
DeserializerArtifact::None => unreachable!(),
DeserializerArtifact::Data(data) => {
self.store_a(data)?;
*self.state = FooTypeDeserializerState::Done__;
ElementHandlerOutput::from_event(event, allow_any)
}
DeserializerArtifact::Deserializer(deserializer) => {
let ret = ElementHandlerOutput::from_event(event, allow_any);
match &ret {
ElementHandlerOutput::Continue { .. } => {
fallback.get_or_insert(FooTypeDeserializerState::A(Some(deserializer)));
*self.state = FooTypeDeserializerState::Done__;
}
ElementHandlerOutput::Break { .. } => {
*self.state = FooTypeDeserializerState::A(Some(deserializer));
}
}
ret
}
})
}
}
impl<'de> Deserializer<'de, super::FooType> for FooTypeDeserializer {
fn init<R>(reader: &R, event: Event<'de>) -> DeserializerResult<'de, super::FooType>
where
R: DeserializeReader,
{
reader.init_deserializer_from_start_event(event, Self::from_bytes_start)
}
fn next<R>(
mut self,
reader: &R,
event: Event<'de>,
) -> DeserializerResult<'de, super::FooType>
where
R: DeserializeReader,
{
use FooTypeDeserializerState as S;
let mut event = event;
let mut fallback = None;
let mut allow_any_element = false;
let (event, allow_any) = loop {
let state = replace(&mut *self.state, S::Unknown__);
event = match (state, event) {
(S::B(Some(deserializer)), event) => {
let output = deserializer.next(reader, event)?;
match self.handle_b(reader, output, &mut fallback)? {
ElementHandlerOutput::Continue { event, allow_any } => {
allow_any_element = allow_any_element || allow_any;
event
}
ElementHandlerOutput::Break { event, allow_any } => {
break (event, allow_any)
}
}
}
(S::C(Some(deserializer)), event) => {
let output = deserializer.next(reader, event)?;
match self.handle_c(reader, output, &mut fallback)? {
ElementHandlerOutput::Continue { event, allow_any } => {
allow_any_element = allow_any_element || allow_any;
event
}
ElementHandlerOutput::Break { event, allow_any } => {
break (event, allow_any)
}
}
}
(S::A(Some(deserializer)), event) => {
let output = deserializer.next(reader, event)?;
match self.handle_a(reader, output, &mut fallback)? {
ElementHandlerOutput::Continue { event, allow_any } => {
allow_any_element = allow_any_element || allow_any;
event
}
ElementHandlerOutput::Break { event, allow_any } => {
break (event, allow_any)
}
}
}
(_, Event::End(_)) => {
if let Some(fallback) = fallback.take() {
self.finish_state(reader, fallback)?;
}
return Ok(DeserializerOutput {
artifact: DeserializerArtifact::Data(self.finish(reader)?),
event: DeserializerEvent::None,
allow_any: false,
});
}
(S::Init__, event) => {
fallback.get_or_insert(S::Init__);
*self.state = FooTypeDeserializerState::B(None);
event
}
(S::B(None), event @ (Event::Start(_) | Event::Empty(_))) => {
if reader.check_start_tag_name(&event, Some(&super::NS_TNS), b"b") {
let output =
<i32 as WithDeserializer>::Deserializer::init(reader, event)?;
match self.handle_b(reader, output, &mut fallback)? {
ElementHandlerOutput::Continue { event, allow_any } => {
allow_any_element = allow_any_element || allow_any;
event
}
ElementHandlerOutput::Break { event, allow_any } => {
break (event, allow_any)
}
}
} else {
*self.state = S::C(None);
event
}
}
(S::C(None), event @ (Event::Start(_) | Event::Empty(_))) => {
if reader.check_start_tag_name(&event, Some(&super::NS_TNS), b"c") {
let output =
<String as WithDeserializer>::Deserializer::init(reader, event)?;
match self.handle_c(reader, output, &mut fallback)? {
ElementHandlerOutput::Continue { event, allow_any } => {
allow_any_element = allow_any_element || allow_any;
event
}
ElementHandlerOutput::Break { event, allow_any } => {
break (event, allow_any)
}
}
} else {
*self.state = S::A(None);
event
}
}
(S::A(None), event @ (Event::Start(_) | Event::Empty(_))) => {
if reader.check_start_tag_name(&event, Some(&super::NS_TNS), b"a") {
let output =
<f32 as WithDeserializer>::Deserializer::init(reader, event)?;
match self.handle_a(reader, output, &mut fallback)? {
ElementHandlerOutput::Continue { event, allow_any } => {
allow_any_element = allow_any_element || allow_any;
event
}
ElementHandlerOutput::Break { event, allow_any } => {
break (event, allow_any)
}
}
} else {
*self.state = S::Done__;
event
}
}
(S::Done__, event) => {
fallback.get_or_insert(S::Done__);
break (DeserializerEvent::Continue(event), allow_any_element);
}
(S::Unknown__, _) => unreachable!(),
(state, event) => {
*self.state = state;
break (DeserializerEvent::Break(event), false);
}
}
};
if let Some(fallback) = fallback {
*self.state = fallback;
}
Ok(DeserializerOutput {
artifact: DeserializerArtifact::Deserializer(self),
event,
allow_any,
})
}
fn finish<R>(mut self, reader: &R) -> Result<super::FooType, Error>
where
R: DeserializeReader,
{
let state = replace(&mut *self.state, FooTypeDeserializerState::Unknown__);
self.finish_state(reader, state)?;
Ok(super::FooType {
b: self
.b
.ok_or_else(|| ErrorKind::MissingElement("b".into()))?,
c: self
.c
.ok_or_else(|| ErrorKind::MissingElement("c".into()))?,
a: self
.a
.ok_or_else(|| ErrorKind::MissingElement("a".into()))?,
})
}
}
}
pub mod quick_xml_serialize {
use core::iter::Iterator;
use xsd_parser::quick_xml::{BytesEnd, BytesStart, Error, Event, WithSerializer};
#[derive(Debug)]
pub struct FooTypeSerializer<'ser> {
pub(super) value: &'ser super::FooType,
pub(super) state: Box<FooTypeSerializerState<'ser>>,
pub(super) name: &'ser str,
pub(super) is_root: bool,
}
#[derive(Debug)]
pub(super) enum FooTypeSerializerState<'ser> {
Init__,
B(<i32 as WithSerializer>::Serializer<'ser>),
C(<String as WithSerializer>::Serializer<'ser>),
A(<f32 as WithSerializer>::Serializer<'ser>),
End__,
Done__,
Phantom__(&'ser ()),
}
impl<'ser> FooTypeSerializer<'ser> {
fn next_event(&mut self) -> Result<Option<Event<'ser>>, Error> {
loop {
match &mut *self.state {
FooTypeSerializerState::Init__ => {
*self.state = FooTypeSerializerState::B(WithSerializer::serializer(
&self.value.b,
Some("tns:b"),
false,
)?);
let mut bytes = BytesStart::new(self.name);
if self.is_root {
bytes.push_attribute((&b"xmlns:tns"[..], &super::NS_TNS[..]));
}
return Ok(Some(Event::Start(bytes)));
}
FooTypeSerializerState::B(x) => match x.next().transpose()? {
Some(event) => return Ok(Some(event)),
None => {
*self.state = FooTypeSerializerState::C(WithSerializer::serializer(
&self.value.c,
Some("tns:c"),
false,
)?)
}
},
FooTypeSerializerState::C(x) => match x.next().transpose()? {
Some(event) => return Ok(Some(event)),
None => {
*self.state = FooTypeSerializerState::A(WithSerializer::serializer(
&self.value.a,
Some("tns:a"),
false,
)?)
}
},
FooTypeSerializerState::A(x) => match x.next().transpose()? {
Some(event) => return Ok(Some(event)),
None => *self.state = FooTypeSerializerState::End__,
},
FooTypeSerializerState::End__ => {
*self.state = FooTypeSerializerState::Done__;
return Ok(Some(Event::End(BytesEnd::new(self.name))));
}
FooTypeSerializerState::Done__ => return Ok(None),
FooTypeSerializerState::Phantom__(_) => unreachable!(),
}
}
}
}
impl<'ser> Iterator for FooTypeSerializer<'ser> {
type Item = Result<Event<'ser>, Error>;
fn next(&mut self) -> Option<Self::Item> {
match self.next_event() {
Ok(Some(event)) => Some(Ok(event)),
Ok(None) => None,
Err(error) => {
*self.state = FooTypeSerializerState::Done__;
Some(Err(error))
}
}
}
}
}