chore(interface-types) Split the serde module…

… into `serde/ser.rs` and `serde/de.rs`. I like smaller files.
This commit is contained in:
Ivan Enderlin 2020-04-02 16:46:23 +02:00
parent 18414ea305
commit 858233a66d
4 changed files with 579 additions and 565 deletions

View File

@ -1,12 +1,10 @@
//! Serde is not necessary to use WIT. It only provides a nicer API
//! for the end-user to send or receive its complex types to/from WIT
//! values, like `record` for instance.
//! Provides a deserializer from WIT values to Rust value.
use crate::{
ast::InterfaceType,
interpreter::wasm::values::{FlattenInterfaceValueIterator, InterfaceValue},
};
use serde::{de, ser, Deserialize, Serialize};
use serde::{de, Deserialize};
use std::{
fmt::{self, Display},
iter::Peekable,
@ -67,68 +65,6 @@ where
}
}
/// Serialize a type `T` that implements the `Serialize` trait to an
/// `InterfaceValue`.
///
/// This is not a requirement to use WIT, but Serde provides an even
/// nicer API to the user to send its complex types to WIT.
///
/// # Example
///
/// ```rust
/// use wasmer_interface_types::interpreter::wasm::values::{
/// InterfaceValue,
/// to_interface_value,
/// };
/// use serde::Serialize;
///
/// #[derive(Serialize)]
/// struct S(i32, i64);
///
/// #[derive(Serialize)]
/// struct T {
/// x: String,
/// s: S,
/// y: f32,
/// };
///
/// let input = T {
/// x: "abc".to_string(),
/// s: S(1, 2),
/// y: 3.,
/// };
///
/// assert_eq!(
/// to_interface_value(&input).unwrap(),
/// InterfaceValue::Record(vec![
/// InterfaceValue::String("abc".to_string()),
/// InterfaceValue::Record(vec![InterfaceValue::I32(1), InterfaceValue::I64(2)]),
/// InterfaceValue::F32(3.),
/// ]),
/// );
/// ```
pub fn to_interface_value<T>(value: &T) -> Result<InterfaceValue, SerializeError>
where
T: Serialize,
{
let mut serializer = Serializer::new();
value.serialize(&mut serializer)?;
if serializer.values.len() != 1 {
Err(SerializeError::TransformationNotFinished)
} else {
let mut first_values = serializer.values.pop().unwrap(); // this `unwrap` is safe because we are sure the length is 1.
if first_values.len() != 1 {
Err(SerializeError::TransformationNotFinished)
} else {
let first_value = first_values.pop().unwrap(); // this `unwrap` is safe because we are sure the length is 1.
Ok(first_value)
}
}
}
/// The deserializer. The iterator iterates over `InterfaceValue`s,
/// all flatten, see `FlattenInterfaceValueIterator`.
struct Deserializer<'de> {
@ -523,399 +459,6 @@ impl<'de, 'a> de::SeqAccess<'de> for Sequence<'a, 'de> {
}
}
/// The serializer.
struct Serializer {
values: Vec<Vec<InterfaceValue>>,
}
impl Serializer {
fn new() -> Self {
Self {
values: vec![vec![]],
}
}
fn last(&mut self) -> &mut Vec<InterfaceValue> {
let index = self.values.len() - 1;
&mut self.values[index]
}
fn push_with_capacity(&mut self, capacity: usize) {
self.values.push(Vec::with_capacity(capacity));
}
fn pop(&mut self) -> Result<Vec<InterfaceValue>, SerializeError> {
if self.values.len() < 2 {
Err(SerializeError::InternalValuesCorrupted)
} else {
Ok(self.values.pop().unwrap()) // this `unwrap` is safe before `self.values` contains at least 2 items
}
}
}
/// Represents an error while serializing.
#[derive(Clone, Debug, PartialEq)]
pub enum SerializeError {
/// The serialization still has pending values internally.
TransformationNotFinished,
/// The internal values have been corrupted during the
/// serialization.
InternalValuesCorrupted,
/// Arbitrary message.
Message(String),
}
impl ser::Error for SerializeError {
fn custom<T: Display>(msg: T) -> Self {
Self::Message(msg.to_string())
}
}
impl Display for SerializeError {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
match self {
Self::TransformationNotFinished => write!(
formatter,
"serialization still has pending values internally, something incorrect happened"
),
Self::InternalValuesCorrupted => write!(
formatter,
"the internal values have been corrutped during the serialization"
),
Self::Message(ref msg) => write!(formatter, "{}", msg),
}
}
}
impl std::error::Error for SerializeError {}
impl<'a> ser::Serializer for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
type SerializeSeq = Self;
type SerializeTuple = Self;
type SerializeTupleStruct = Self;
type SerializeTupleVariant = Self;
type SerializeMap = Self;
type SerializeStruct = Self;
type SerializeStructVariant = Self;
fn serialize_bool(self, _value: bool) -> Result<Self::Ok, Self::Error> {
unimplemented!("`bool` is not supported by WIT for the moment.")
}
fn serialize_i8(self, value: i8) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_i16(self, value: i16) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_i32(self, value: i32) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_i64(self, value: i64) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_u8(self, value: u8) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_u16(self, value: u16) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_u32(self, value: u32) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_u64(self, value: u64) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_f32(self, value: f32) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_f64(self, value: f64) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_char(self, _value: char) -> Result<Self::Ok, Self::Error> {
todo!("`char` is not supported by WIT for the moment.")
}
fn serialize_str(self, value: &str) -> Result<Self::Ok, Self::Error> {
self.last().push(value.to_owned().into());
Ok(())
}
fn serialize_bytes(self, _value: &[u8]) -> Result<Self::Ok, Self::Error> {
todo!("`bytes` is not supported by WIT for the moment.")
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
self.serialize_unit()
}
fn serialize_some<T>(self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
todo!("`some` is not supported by WIT for the moment.")
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
todo!("`unit` is not supported by WIT for the moment.")
}
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Self::Error> {
todo!("`unit_struct` is not supported by WIT for the moment.")
}
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
todo!("`unit_variant` is not supported by WIT for the moment.")
}
fn serialize_newtype_struct<T>(
self,
_name: &'static str,
value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
value.serialize(self)
}
fn serialize_newtype_variant<T>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
todo!("`newtype_variant` is not supported by WIT for the moment.")
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
todo!("`seq` is not supported by WIT for the moment.")
}
fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, Self::Error> {
todo!("`tuple` is not supported by WIT for the moment.")
}
fn serialize_tuple_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
self.push_with_capacity(len);
Ok(self)
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
todo!("`tuple_variant` is not supported by WIT for the moment.")
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
todo!("`map` is not supported by WIT for the moment.")
}
fn serialize_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
self.push_with_capacity(len);
Ok(self)
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
todo!("`struct_variant` is not supported by WIT for the moment.")
}
}
impl<'a> ser::SerializeSeq for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_element<T>(&mut self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn end(self) -> Result<Self::Ok, Self::Error> {
unimplemented!()
}
}
impl<'a> ser::SerializeTuple for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_element<T>(&mut self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn end(self) -> Result<Self::Ok, Self::Error> {
unimplemented!()
}
}
impl<'a> ser::SerializeTupleStruct for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_field<T>(&mut self, value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
value.serialize(&mut **self)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
let record = InterfaceValue::Record(self.pop()?);
self.last().push(record);
Ok(())
}
}
impl<'a> ser::SerializeTupleVariant for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_field<T>(&mut self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn end(self) -> Result<Self::Ok, Self::Error> {
unimplemented!()
}
}
impl<'a> ser::SerializeMap for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_key<T>(&mut self, _key: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn serialize_value<T>(&mut self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn end(self) -> Result<Self::Ok, Self::Error> {
unimplemented!()
}
}
impl<'a> ser::SerializeStruct for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_field<T>(&mut self, _key: &'static str, value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
value.serialize(&mut **self)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
let record = InterfaceValue::Record(self.pop()?);
self.last().push(record);
Ok(())
}
}
impl<'a> ser::SerializeStructVariant for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_field<T>(
&mut self,
_key: &'static str,
_value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn end(self) -> Result<Self::Ok, Self::Error> {
unimplemented!()
}
}
#[cfg(test)]
mod tests {
use super::*;
@ -1044,109 +587,4 @@ mod tests {
assert_eq!(from_interface_values::<Line>(&input).unwrap(), output);
}
macro_rules! serialize_value {
($test_name:ident, $ty:ident, $variant:ident, $value:expr) => {
#[test]
#[allow(non_snake_case)]
fn $test_name() {
let input: $ty = $value;
let output = InterfaceValue::$variant($value);
assert_eq!(to_interface_value(&input).unwrap(), output);
}
};
}
serialize_value!(test_serialize_value__s8, i8, S8, 42);
serialize_value!(test_serialize_value__s16, i16, S16, 42);
serialize_value!(test_serialize_value__i32, i32, I32, 42);
serialize_value!(test_serialize_value__i64, i64, I64, 42);
serialize_value!(test_serialize_value__u8, u8, U8, 42);
serialize_value!(test_serialize_value__u16, u16, U16, 42);
serialize_value!(test_serialize_value__u32, u32, U32, 42);
serialize_value!(test_serialize_value__u64, u64, U64, 42);
serialize_value!(test_serialize_value__f32, f32, F32, 42.);
serialize_value!(test_serialize_value__f64, f32, F32, 42.);
serialize_value!(
test_serialize_value__string,
String,
String,
"foo".to_string()
);
#[test]
#[allow(non_snake_case)]
fn test_serialize_value__newtype_struct() {
#[derive(Serialize)]
struct S(i8);
let input = S(42);
let output = InterfaceValue::S8(42);
assert_eq!(to_interface_value(&input).unwrap(), output);
}
#[test]
#[allow(non_snake_case)]
fn test_serialize_value__tuple_struct() {
#[derive(Serialize)]
struct S(i8, f32);
let input = S(7, 42.);
let output = InterfaceValue::Record(vec![InterfaceValue::S8(7), InterfaceValue::F32(42.)]);
assert_eq!(to_interface_value(&input).unwrap(), output);
}
#[test]
#[allow(non_snake_case)]
fn test_serialize_value__struct() {
#[derive(Serialize)]
struct S {
x: i8,
y: f32,
}
let input = S { x: 7, y: 42. };
let output = InterfaceValue::Record(vec![InterfaceValue::S8(7), InterfaceValue::F32(42.)]);
assert_eq!(to_interface_value(&input).unwrap(), output);
}
#[test]
#[allow(non_snake_case)]
fn test_serialize_value__struct_nested() {
#[derive(Serialize)]
struct Point {
x: i32,
y: i32,
z: i32,
}
#[derive(Serialize)]
struct Line {
p1: Point,
p2: Point,
}
let input = Line {
p1: Point { x: 1, y: 2, z: 3 },
p2: Point { x: 4, y: 5, z: 6 },
};
let output = InterfaceValue::Record(vec![
InterfaceValue::Record(vec![
InterfaceValue::I32(1),
InterfaceValue::I32(2),
InterfaceValue::I32(3),
]),
InterfaceValue::Record(vec![
InterfaceValue::I32(4),
InterfaceValue::I32(5),
InterfaceValue::I32(6),
]),
]);
assert_eq!(to_interface_value(&input).unwrap(), output);
}
}

View File

@ -0,0 +1,6 @@
//! Serde is not necessary to use WIT. It only provides a nicer API
//! for the end-user to send or receive its complex types to/from WIT
//! values, like `record` for instance.
pub(crate) mod de;
pub(crate) mod ser;

View File

@ -0,0 +1,570 @@
//! Provides a serializer from Rust value to WIT values.
use crate::interpreter::wasm::values::InterfaceValue;
use serde::{ser, Serialize};
use std::fmt::{self, Display};
/// Serialize a type `T` that implements the `Serialize` trait to an
/// `InterfaceValue`.
///
/// This is not a requirement to use WIT, but Serde provides an even
/// nicer API to the user to send its complex types to WIT.
///
/// # Example
///
/// ```rust
/// use wasmer_interface_types::interpreter::wasm::values::{
/// InterfaceValue,
/// to_interface_value,
/// };
/// use serde::Serialize;
///
/// #[derive(Serialize)]
/// struct S(i32, i64);
///
/// #[derive(Serialize)]
/// struct T {
/// x: String,
/// s: S,
/// y: f32,
/// };
///
/// let input = T {
/// x: "abc".to_string(),
/// s: S(1, 2),
/// y: 3.,
/// };
///
/// assert_eq!(
/// to_interface_value(&input).unwrap(),
/// InterfaceValue::Record(vec![
/// InterfaceValue::String("abc".to_string()),
/// InterfaceValue::Record(vec![InterfaceValue::I32(1), InterfaceValue::I64(2)]),
/// InterfaceValue::F32(3.),
/// ]),
/// );
/// ```
pub fn to_interface_value<T>(value: &T) -> Result<InterfaceValue, SerializeError>
where
T: Serialize,
{
let mut serializer = Serializer::new();
value.serialize(&mut serializer)?;
if serializer.values.len() != 1 {
Err(SerializeError::TransformationNotFinished)
} else {
let mut first_values = serializer.values.pop().unwrap(); // this `unwrap` is safe because we are sure the length is 1.
if first_values.len() != 1 {
Err(SerializeError::TransformationNotFinished)
} else {
let first_value = first_values.pop().unwrap(); // this `unwrap` is safe because we are sure the length is 1.
Ok(first_value)
}
}
}
/// The serializer.
struct Serializer {
values: Vec<Vec<InterfaceValue>>,
}
impl Serializer {
fn new() -> Self {
Self {
values: vec![vec![]],
}
}
fn last(&mut self) -> &mut Vec<InterfaceValue> {
let index = self.values.len() - 1;
&mut self.values[index]
}
fn push_with_capacity(&mut self, capacity: usize) {
self.values.push(Vec::with_capacity(capacity));
}
fn pop(&mut self) -> Result<Vec<InterfaceValue>, SerializeError> {
if self.values.len() < 2 {
Err(SerializeError::InternalValuesCorrupted)
} else {
Ok(self.values.pop().unwrap()) // this `unwrap` is safe before `self.values` contains at least 2 items
}
}
}
/// Represents an error while serializing.
#[derive(Clone, Debug, PartialEq)]
pub enum SerializeError {
/// The serialization still has pending values internally.
TransformationNotFinished,
/// The internal values have been corrupted during the
/// serialization.
InternalValuesCorrupted,
/// Arbitrary message.
Message(String),
}
impl ser::Error for SerializeError {
fn custom<T: Display>(msg: T) -> Self {
Self::Message(msg.to_string())
}
}
impl Display for SerializeError {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
match self {
Self::TransformationNotFinished => write!(
formatter,
"serialization still has pending values internally, something incorrect happened"
),
Self::InternalValuesCorrupted => write!(
formatter,
"the internal values have been corrutped during the serialization"
),
Self::Message(ref msg) => write!(formatter, "{}", msg),
}
}
}
impl std::error::Error for SerializeError {}
impl<'a> ser::Serializer for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
type SerializeSeq = Self;
type SerializeTuple = Self;
type SerializeTupleStruct = Self;
type SerializeTupleVariant = Self;
type SerializeMap = Self;
type SerializeStruct = Self;
type SerializeStructVariant = Self;
fn serialize_bool(self, _value: bool) -> Result<Self::Ok, Self::Error> {
unimplemented!("`bool` is not supported by WIT for the moment.")
}
fn serialize_i8(self, value: i8) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_i16(self, value: i16) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_i32(self, value: i32) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_i64(self, value: i64) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_u8(self, value: u8) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_u16(self, value: u16) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_u32(self, value: u32) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_u64(self, value: u64) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_f32(self, value: f32) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_f64(self, value: f64) -> Result<Self::Ok, Self::Error> {
self.last().push(value.into());
Ok(())
}
fn serialize_char(self, _value: char) -> Result<Self::Ok, Self::Error> {
todo!("`char` is not supported by WIT for the moment.")
}
fn serialize_str(self, value: &str) -> Result<Self::Ok, Self::Error> {
self.last().push(value.to_owned().into());
Ok(())
}
fn serialize_bytes(self, _value: &[u8]) -> Result<Self::Ok, Self::Error> {
todo!("`bytes` is not supported by WIT for the moment.")
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
self.serialize_unit()
}
fn serialize_some<T>(self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
todo!("`some` is not supported by WIT for the moment.")
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
todo!("`unit` is not supported by WIT for the moment.")
}
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Self::Error> {
todo!("`unit_struct` is not supported by WIT for the moment.")
}
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
todo!("`unit_variant` is not supported by WIT for the moment.")
}
fn serialize_newtype_struct<T>(
self,
_name: &'static str,
value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
value.serialize(self)
}
fn serialize_newtype_variant<T>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
todo!("`newtype_variant` is not supported by WIT for the moment.")
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
todo!("`seq` is not supported by WIT for the moment.")
}
fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, Self::Error> {
todo!("`tuple` is not supported by WIT for the moment.")
}
fn serialize_tuple_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
self.push_with_capacity(len);
Ok(self)
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
todo!("`tuple_variant` is not supported by WIT for the moment.")
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
todo!("`map` is not supported by WIT for the moment.")
}
fn serialize_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
self.push_with_capacity(len);
Ok(self)
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
todo!("`struct_variant` is not supported by WIT for the moment.")
}
}
impl<'a> ser::SerializeSeq for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_element<T>(&mut self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn end(self) -> Result<Self::Ok, Self::Error> {
unimplemented!()
}
}
impl<'a> ser::SerializeTuple for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_element<T>(&mut self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn end(self) -> Result<Self::Ok, Self::Error> {
unimplemented!()
}
}
impl<'a> ser::SerializeTupleStruct for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_field<T>(&mut self, value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
value.serialize(&mut **self)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
let record = InterfaceValue::Record(self.pop()?);
self.last().push(record);
Ok(())
}
}
impl<'a> ser::SerializeTupleVariant for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_field<T>(&mut self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn end(self) -> Result<Self::Ok, Self::Error> {
unimplemented!()
}
}
impl<'a> ser::SerializeMap for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_key<T>(&mut self, _key: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn serialize_value<T>(&mut self, _value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn end(self) -> Result<Self::Ok, Self::Error> {
unimplemented!()
}
}
impl<'a> ser::SerializeStruct for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_field<T>(&mut self, _key: &'static str, value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
value.serialize(&mut **self)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
let record = InterfaceValue::Record(self.pop()?);
self.last().push(record);
Ok(())
}
}
impl<'a> ser::SerializeStructVariant for &'a mut Serializer {
type Ok = ();
type Error = SerializeError;
fn serialize_field<T>(
&mut self,
_key: &'static str,
_value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
unimplemented!()
}
fn end(self) -> Result<Self::Ok, Self::Error> {
unimplemented!()
}
}
#[cfg(test)]
mod tests {
use super::*;
macro_rules! serialize_value {
($test_name:ident, $ty:ident, $variant:ident, $value:expr) => {
#[test]
#[allow(non_snake_case)]
fn $test_name() {
let input: $ty = $value;
let output = InterfaceValue::$variant($value);
assert_eq!(to_interface_value(&input).unwrap(), output);
}
};
}
serialize_value!(test_serialize_value__s8, i8, S8, 42);
serialize_value!(test_serialize_value__s16, i16, S16, 42);
serialize_value!(test_serialize_value__i32, i32, I32, 42);
serialize_value!(test_serialize_value__i64, i64, I64, 42);
serialize_value!(test_serialize_value__u8, u8, U8, 42);
serialize_value!(test_serialize_value__u16, u16, U16, 42);
serialize_value!(test_serialize_value__u32, u32, U32, 42);
serialize_value!(test_serialize_value__u64, u64, U64, 42);
serialize_value!(test_serialize_value__f32, f32, F32, 42.);
serialize_value!(test_serialize_value__f64, f32, F32, 42.);
serialize_value!(
test_serialize_value__string,
String,
String,
"foo".to_string()
);
#[test]
#[allow(non_snake_case)]
fn test_serialize_value__newtype_struct() {
#[derive(Serialize)]
struct S(i8);
let input = S(42);
let output = InterfaceValue::S8(42);
assert_eq!(to_interface_value(&input).unwrap(), output);
}
#[test]
#[allow(non_snake_case)]
fn test_serialize_value__tuple_struct() {
#[derive(Serialize)]
struct S(i8, f32);
let input = S(7, 42.);
let output = InterfaceValue::Record(vec![InterfaceValue::S8(7), InterfaceValue::F32(42.)]);
assert_eq!(to_interface_value(&input).unwrap(), output);
}
#[test]
#[allow(non_snake_case)]
fn test_serialize_value__struct() {
#[derive(Serialize)]
struct S {
x: i8,
y: f32,
}
let input = S { x: 7, y: 42. };
let output = InterfaceValue::Record(vec![InterfaceValue::S8(7), InterfaceValue::F32(42.)]);
assert_eq!(to_interface_value(&input).unwrap(), output);
}
#[test]
#[allow(non_snake_case)]
fn test_serialize_value__struct_nested() {
#[derive(Serialize)]
struct Point {
x: i32,
y: i32,
z: i32,
}
#[derive(Serialize)]
struct Line {
p1: Point,
p2: Point,
}
let input = Line {
p1: Point { x: 1, y: 2, z: 3 },
p2: Point { x: 4, y: 5, z: 6 },
};
let output = InterfaceValue::Record(vec![
InterfaceValue::Record(vec![
InterfaceValue::I32(1),
InterfaceValue::I32(2),
InterfaceValue::I32(3),
]),
InterfaceValue::Record(vec![
InterfaceValue::I32(4),
InterfaceValue::I32(5),
InterfaceValue::I32(6),
]),
]);
assert_eq!(to_interface_value(&input).unwrap(), output);
}
}

View File

@ -5,7 +5,7 @@ use crate::errors::WasmValueNativeCastError;
use std::{convert::TryFrom, slice::Iter};
#[cfg(feature = "serde")]
pub use crate::interpreter::wasm::serde::*;
pub use crate::interpreter::wasm::serde::{de::*, ser::*};
/// A WIT value.
#[derive(Debug, Clone, PartialEq)]