forked from tafia/quick-xml
/
simple_type.rs
1361 lines (1191 loc) · 48.2 KB
/
simple_type.rs
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//! Contains Serde `Deserializer` for XML [simple types] [as defined] in the XML Schema.
//!
//! [simple types]: https://www.w3schools.com/xml/el_simpletype.asp
//! [as defined]: https://www.w3.org/TR/xmlschema11-1/#Simple_Type_Definition
use crate::de::{deserialize_bool, str2bool};
use crate::encoding::Decoder;
use crate::errors::serialize::DeError;
use crate::escape::unescape;
use memchr::memchr;
use serde::de::{DeserializeSeed, Deserializer, EnumAccess, SeqAccess, VariantAccess, Visitor};
use serde::{self, serde_if_integer128};
use std::borrow::Cow;
use std::ops::{Deref, Range};
macro_rules! deserialize_num {
($method:ident, $visit:ident) => {
fn $method<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.$visit(self.content.as_str().parse()?)
}
};
($method:ident => $visit:ident) => {
fn $method<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
let string = self.decode()?;
visitor.$visit(string.as_str().parse()?)
}
};
}
macro_rules! unsupported {
(
$deserialize:ident
$(
($($type:ty),*)
)?
=> $message:literal
) => {
#[inline]
fn $deserialize<V: Visitor<'de>>(
self,
$($(_: $type,)*)?
_visitor: V
) -> Result<V::Value, Self::Error> {
Err(DeError::Unsupported($message.into()))
}
};
}
////////////////////////////////////////////////////////////////////////////////////////////////////
/// A version of [`Cow`] that can borrow from two different buffers, one of them
/// is a deserializer input, and conceptually contains only part of owned data.
///
/// # Lifetimes
/// - `'de` -- lifetime of the data that deserializer borrow from the parsed input
/// - `'a` -- lifetime of the data that owned by a deserializer
enum Content<'de, 'a> {
/// An input borrowed from the parsed data
Input(&'de str),
/// An input borrowed from the buffer owned by another deserializer
Slice(&'a str),
/// An input taken from an external deserializer, owned by that deserializer.
/// Only part of this data, located after offset represented by `usize`, used
/// to deserialize data, the other is a garbage that can't be dropped because
/// we do not want to make reallocations if they will not required.
Owned(String, usize),
}
impl<'de, 'a> Content<'de, 'a> {
/// Returns string representation of the content
fn as_str(&self) -> &str {
match self {
Content::Input(s) => s,
Content::Slice(s) => s,
Content::Owned(s, offset) => s.split_at(*offset).1,
}
}
/// Supply to the visitor a borrowed string, a string slice, or an owned
/// string depending on the kind of input. Unlike [`Self::deserialize_item`],
/// the whole [`Self::Owned`] string will be passed to the visitor.
///
/// Calls
/// - `visitor.visit_borrowed_str` if data borrowed from the input
/// - `visitor.visit_str` if data borrowed from another source
/// - `visitor.visit_string` if data owned by this type
#[inline]
fn deserialize_all<V>(self, visitor: V) -> Result<V::Value, DeError>
where
V: Visitor<'de>,
{
match self {
Content::Input(s) => visitor.visit_borrowed_str(s),
Content::Slice(s) => visitor.visit_str(s),
Content::Owned(s, _) => visitor.visit_string(s),
}
}
/// Supply to the visitor a borrowed string, a string slice, or an owned
/// string depending on the kind of input. Unlike [`Self::deserialize_all`],
/// only part of [`Self::Owned`] string will be passed to the visitor.
///
/// Calls
/// - `visitor.visit_borrowed_str` if data borrowed from the input
/// - `visitor.visit_str` if data borrowed from another source
/// - `visitor.visit_string` if data owned by this type
#[inline]
fn deserialize_item<V>(self, visitor: V) -> Result<V::Value, DeError>
where
V: Visitor<'de>,
{
match self {
Content::Input(s) => visitor.visit_borrowed_str(s),
Content::Slice(s) => visitor.visit_str(s),
Content::Owned(s, 0) => visitor.visit_string(s),
Content::Owned(s, offset) => visitor.visit_str(s.split_at(offset).1),
}
}
}
/// A deserializer that handles ordinary [simple type definition][item] with
/// `{variety} = atomic`, or an ordinary [simple type] definition with
/// `{variety} = union` whose basic members are all atomic.
///
/// This deserializer can deserialize only primitive types:
/// - numbers
/// - booleans
/// - strings
/// - units
/// - options
/// - unit variants of enums
///
/// Identifiers represented as strings and deserialized accordingly.
///
/// Deserialization of all other types returns [`Unsupported`][DeError::Unsupported] error.
///
/// The `Owned` variant of the content acts as a storage for data, allocated by
/// an external deserializer that pass it via [`ListIter`].
///
/// [item]: https://www.w3.org/TR/xmlschema11-1/#std-item_type_definition
/// [simple type]: https://www.w3.org/TR/xmlschema11-1/#Simple_Type_Definition
struct AtomicDeserializer<'de, 'a> {
/// Content of the attribute value, text content or CDATA content
content: Content<'de, 'a>,
/// If `true`, `content` in an escaped form and should be unescaped before use
escaped: bool,
}
impl<'de, 'a> Deserializer<'de> for AtomicDeserializer<'de, 'a> {
type Error = DeError;
/// Forwards deserialization to the [`Self::deserialize_str`]
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_str(visitor)
}
/// According to the <https://www.w3.org/TR/xmlschema-2/#boolean>,
/// valid boolean representations are only `"true"`, `"false"`, `"1"`,
/// and `"0"`. But this method also handles following:
///
/// |`bool` |XML content
/// |-------|-------------------------------------------------------------
/// |`true` |`"True"`, `"TRUE"`, `"t"`, `"Yes"`, `"YES"`, `"yes"`, `"y"`
/// |`false`|`"False"`, `"FALSE"`, `"f"`, `"No"`, `"NO"`, `"no"`, `"n"`
fn deserialize_bool<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
str2bool(self.content.as_str(), visitor)
}
deserialize_num!(deserialize_i8, visit_i8);
deserialize_num!(deserialize_i16, visit_i16);
deserialize_num!(deserialize_i32, visit_i32);
deserialize_num!(deserialize_i64, visit_i64);
deserialize_num!(deserialize_u8, visit_u8);
deserialize_num!(deserialize_u16, visit_u16);
deserialize_num!(deserialize_u32, visit_u32);
deserialize_num!(deserialize_u64, visit_u64);
serde_if_integer128! {
deserialize_num!(deserialize_i128, visit_i128);
deserialize_num!(deserialize_u128, visit_u128);
}
deserialize_num!(deserialize_f32, visit_f32);
deserialize_num!(deserialize_f64, visit_f64);
/// Forwards deserialization to the [`Self::deserialize_str`]
fn deserialize_char<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_str(visitor)
}
/// Supply to the visitor borrowed string, string slice, or owned string
/// depending on the kind of input and presence of the escaped data.
///
/// If string requires unescaping, then calls [`Visitor::visit_string`] with
/// new allocated buffer with unescaped data.
///
/// Otherwise calls
/// - [`Visitor::visit_borrowed_str`] if data borrowed from the input
/// - [`Visitor::visit_str`] if data borrowed from other deserializer
/// - [`Visitor::visit_string`] if data owned by this deserializer
fn deserialize_str<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
if self.escaped {
match unescape(self.content.as_str())? {
Cow::Borrowed(_) => self.content.deserialize_item(visitor),
Cow::Owned(s) => visitor.visit_string(s),
}
} else {
self.content.deserialize_item(visitor)
}
}
fn deserialize_string<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_str(visitor)
}
/// If `content` is an empty string then calls [`Visitor::visit_none`],
/// otherwise calls [`Visitor::visit_some`] with itself
fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
if self.content.as_str().is_empty() {
visitor.visit_none()
} else {
visitor.visit_some(self)
}
}
fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_unit()
}
/// Forwards deserialization to the [`Self::deserialize_unit`]
fn deserialize_unit_struct<V>(
self,
_name: &'static str,
visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_unit(visitor)
}
fn deserialize_newtype_struct<V>(
self,
_name: &'static str,
visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_newtype_struct(self)
}
fn deserialize_enum<V>(
self,
_name: &'static str,
_variants: &'static [&'static str],
visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_enum(self)
}
/// Forwards deserialization to the [`Self::deserialize_str`]
fn deserialize_identifier<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_str(visitor)
}
fn deserialize_ignored_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_unit()
}
unsupported!(deserialize_bytes => "byte arrays are not supported as `xs:list` items");
unsupported!(deserialize_byte_buf => "byte arrays are not supported as `xs:list` items");
unsupported!(deserialize_seq => "sequences are not supported as `xs:list` items");
unsupported!(deserialize_tuple(usize) => "tuples are not supported as `xs:list` items");
unsupported!(deserialize_tuple_struct(&'static str, usize) => "tuples are not supported as `xs:list` items");
unsupported!(deserialize_map => "maps are not supported as `xs:list` items");
unsupported!(deserialize_struct(&'static str, &'static [&'static str]) => "structures are not supported as `xs:list` items");
}
impl<'de, 'a> EnumAccess<'de> for AtomicDeserializer<'de, 'a> {
type Error = DeError;
type Variant = AtomicUnitOnly;
fn variant_seed<V>(self, seed: V) -> Result<(V::Value, Self::Variant), DeError>
where
V: DeserializeSeed<'de>,
{
let name = seed.deserialize(self)?;
Ok((name, AtomicUnitOnly))
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
/// Deserializer of variant data, that supports only unit variants.
/// Attempt to deserialize newtype, tuple or struct variant will return a
/// [`DeError::Unsupported`] error.
pub struct AtomicUnitOnly;
impl<'de> VariantAccess<'de> for AtomicUnitOnly {
type Error = DeError;
#[inline]
fn unit_variant(self) -> Result<(), DeError> {
Ok(())
}
fn newtype_variant_seed<T>(self, _seed: T) -> Result<T::Value, DeError>
where
T: DeserializeSeed<'de>,
{
Err(DeError::Unsupported(
"enum newtype variants are not supported as `xs:list` items".into(),
))
}
fn tuple_variant<V>(self, _len: usize, _visitor: V) -> Result<V::Value, DeError>
where
V: Visitor<'de>,
{
Err(DeError::Unsupported(
"enum tuple variants are not supported as `xs:list` items".into(),
))
}
fn struct_variant<V>(
self,
_fields: &'static [&'static str],
_visitor: V,
) -> Result<V::Value, DeError>
where
V: Visitor<'de>,
{
Err(DeError::Unsupported(
"enum struct variants are not supported as `xs:list` items".into(),
))
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
/// Iterator over string sub-slices delimited by one or several spaces.
/// Contains decoded value of the `simpleType`.
/// Iteration ends when list contains `None`.
struct ListIter<'de, 'a> {
/// If `Some`, contains unconsumed data of the list
content: Option<Content<'de, 'a>>,
/// If `true`, `content` in escaped form and should be unescaped before use
escaped: bool,
}
impl<'de, 'a> SeqAccess<'de> for ListIter<'de, 'a> {
type Error = DeError;
fn next_element_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>, DeError>
where
T: DeserializeSeed<'de>,
{
if let Some(mut content) = self.content.take() {
const DELIMITER: u8 = b' ';
loop {
let string = content.as_str();
if string.is_empty() {
return Ok(None);
}
return match memchr(DELIMITER, string.as_bytes()) {
// No delimiters in the `content`, deserialize it as a whole atomic
None => seed.deserialize(AtomicDeserializer {
content,
escaped: self.escaped,
}),
// `content` started with a space, skip them all
Some(0) => {
// Skip all spaces
let start = string.as_bytes().iter().position(|ch| *ch != DELIMITER);
content = match (start, content) {
// We cannot find any non-space character, so string contains only spaces
(None, _) => return Ok(None),
// Borrow result from input or deserializer depending on the initial borrowing
(Some(start), Content::Input(s)) => Content::Input(s.split_at(start).1),
(Some(start), Content::Slice(s)) => Content::Slice(s.split_at(start).1),
// Skip additional bytes if we own data
(Some(start), Content::Owned(s, skip)) => {
Content::Owned(s, skip + start)
}
};
continue;
}
// `content` started from an atomic
Some(end) => match content {
// Borrow for the next iteration from input or deserializer depending on
// the initial borrowing
Content::Input(s) => {
let (item, rest) = s.split_at(end);
self.content = Some(Content::Input(rest));
seed.deserialize(AtomicDeserializer {
content: Content::Input(item),
escaped: self.escaped,
})
}
Content::Slice(s) => {
let (item, rest) = s.split_at(end);
self.content = Some(Content::Slice(rest));
seed.deserialize(AtomicDeserializer {
content: Content::Slice(item),
escaped: self.escaped,
})
}
// Skip additional bytes if we own data for next iteration, but deserialize from
// the borrowed data from our buffer
Content::Owned(s, skip) => {
let item = s.split_at(skip + end).0;
let result = seed.deserialize(AtomicDeserializer {
content: Content::Slice(item),
escaped: self.escaped,
});
self.content = Some(Content::Owned(s, skip + end));
result
}
},
}
.map(Some);
}
}
Ok(None)
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
/// A version of [`Cow`] that can borrow from two different buffers, one of them
/// is a deserializer input.
///
/// # Lifetimes
/// - `'de` -- lifetime of the data that deserializer borrow from the parsed input
/// - `'a` -- lifetime of the data that owned by a deserializer
enum CowRef<'de, 'a> {
/// An input borrowed from the parsed data
Input(&'de [u8]),
/// An input borrowed from the buffer owned by another deserializer
Slice(&'a [u8]),
/// An input taken from an external deserializer, owned by that deserializer
Owned(Vec<u8>),
}
impl<'de, 'a> Deref for CowRef<'de, 'a> {
type Target = [u8];
fn deref(&self) -> &[u8] {
match self {
Self::Input(slice) => slice,
Self::Slice(slice) => slice,
Self::Owned(ref v) => v,
}
}
}
/// A deserializer for an xml probably escaped and encoded value of XSD [simple types].
/// This deserializer will borrow from the input as much as possible.
///
/// `deserialize_any()` returns the whole string that deserializer contains.
///
/// Escaping the value is actually not always necessary, for instance when
/// converting to a float, we don't expect any escapable character anyway.
/// In that cases deserializer skips unescaping step.
///
/// Used for deserialize values from:
/// - attribute values (`<... ...="value" ...>`)
/// - text content (`<...>text</...>`)
/// - CDATA content (`<...><![CDATA[cdata]]></...>`)
///
/// [simple types]: https://www.w3.org/TR/xmlschema11-1/#Simple_Type_Definition
pub struct SimpleTypeDeserializer<'de, 'a> {
/// - In case of attribute contains escaped attribute value
/// - In case of text contains escaped text value
/// - In case of CData contains unescaped cdata value
content: CowRef<'de, 'a>,
/// If `true`, `content` in escaped form and should be unescaped before use
escaped: bool,
/// Decoder used to deserialize string data, numeric and boolean data.
/// Not used for deserializing raw byte buffers
decoder: Decoder,
}
impl<'de, 'a> SimpleTypeDeserializer<'de, 'a> {
/// Creates a deserializer from a value, that possible borrowed from input
pub fn from_text_content(value: Cow<'de, str>) -> Self {
let content = match value {
Cow::Borrowed(slice) => CowRef::Input(slice.as_bytes()),
Cow::Owned(content) => CowRef::Owned(content.into_bytes()),
};
Self::new(content, false, Decoder::utf8())
}
/// Creates a deserializer from a part of value at specified range
pub fn from_part(
value: &'a Cow<'de, [u8]>,
range: Range<usize>,
escaped: bool,
decoder: Decoder,
) -> Self {
let content = match value {
Cow::Borrowed(slice) => CowRef::Input(&slice[range]),
Cow::Owned(slice) => CowRef::Slice(&slice[range]),
};
Self::new(content, escaped, decoder)
}
/// Constructor for tests
#[inline]
fn new(content: CowRef<'de, 'a>, escaped: bool, decoder: Decoder) -> Self {
Self {
content,
escaped,
decoder,
}
}
/// Decodes raw bytes using the encoding specified.
/// The method will borrow if has the UTF-8 compatible representation.
#[inline]
fn decode<'b>(&'b self) -> Result<Content<'de, 'b>, DeError> {
Ok(match self.content {
CowRef::Input(content) => match self.decoder.decode(content)? {
Cow::Borrowed(content) => Content::Input(content),
Cow::Owned(content) => Content::Owned(content, 0),
},
CowRef::Slice(content) => match self.decoder.decode(content)? {
Cow::Borrowed(content) => Content::Slice(content),
Cow::Owned(content) => Content::Owned(content, 0),
},
CowRef::Owned(ref content) => match self.decoder.decode(content)? {
Cow::Borrowed(content) => Content::Slice(content),
Cow::Owned(content) => Content::Owned(content, 0),
},
})
}
}
impl<'de, 'a> Deserializer<'de> for SimpleTypeDeserializer<'de, 'a> {
type Error = DeError;
/// Forwards deserialization to the [`Self::deserialize_str`]
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_str(visitor)
}
fn deserialize_bool<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
deserialize_bool(&self.content, self.decoder, visitor)
}
deserialize_num!(deserialize_i8 => visit_i8);
deserialize_num!(deserialize_i16 => visit_i16);
deserialize_num!(deserialize_i32 => visit_i32);
deserialize_num!(deserialize_i64 => visit_i64);
deserialize_num!(deserialize_u8 => visit_u8);
deserialize_num!(deserialize_u16 => visit_u16);
deserialize_num!(deserialize_u32 => visit_u32);
deserialize_num!(deserialize_u64 => visit_u64);
serde_if_integer128! {
deserialize_num!(deserialize_i128 => visit_i128);
deserialize_num!(deserialize_u128 => visit_u128);
}
deserialize_num!(deserialize_f32 => visit_f32);
deserialize_num!(deserialize_f64 => visit_f64);
/// Forwards deserialization to the [`Self::deserialize_str`]
fn deserialize_char<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_str(visitor)
}
fn deserialize_str<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
let content = self.decode()?;
if self.escaped {
match unescape(content.as_str())? {
Cow::Borrowed(_) => content.deserialize_all(visitor),
Cow::Owned(s) => visitor.visit_string(s),
}
} else {
content.deserialize_all(visitor)
}
}
/// Forwards deserialization to the [`Self::deserialize_str`]
fn deserialize_string<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_str(visitor)
}
/// Returns [`DeError::Unsupported`]
fn deserialize_bytes<V>(self, _visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
Err(DeError::Unsupported(
"binary data content is not supported by XML format".into(),
))
}
/// Forwards deserialization to the [`Self::deserialize_bytes`]
fn deserialize_byte_buf<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_bytes(visitor)
}
fn deserialize_option<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
if self.content.is_empty() {
visitor.visit_none()
} else {
visitor.visit_some(self)
}
}
fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_unit()
}
/// Forwards deserialization to the [`Self::deserialize_unit`]
fn deserialize_unit_struct<V>(
self,
_name: &'static str,
visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_unit(visitor)
}
fn deserialize_newtype_struct<V>(
self,
_name: &'static str,
visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_newtype_struct(self)
}
fn deserialize_seq<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_seq(ListIter {
content: Some(self.decode()?),
escaped: self.escaped,
})
}
/// Representation of tuples the same as [sequences][Self::deserialize_seq].
fn deserialize_tuple<V>(self, _len: usize, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_seq(visitor)
}
/// Representation of named tuples the same as [unnamed tuples][Self::deserialize_tuple].
fn deserialize_tuple_struct<V>(
self,
_name: &'static str,
len: usize,
visitor: V,
) -> Result<V::Value, DeError>
where
V: Visitor<'de>,
{
self.deserialize_tuple(len, visitor)
}
unsupported!(deserialize_map => "maps are not supported for XSD `simpleType`s");
unsupported!(deserialize_struct(&'static str, &'static [&'static str])
=> "structures are not supported for XSD `simpleType`s");
fn deserialize_enum<V>(
self,
_name: &'static str,
_variants: &'static [&'static str],
visitor: V,
) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_enum(self)
}
/// Forwards deserialization to the [`Self::deserialize_str`]
fn deserialize_identifier<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
self.deserialize_str(visitor)
}
fn deserialize_ignored_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where
V: Visitor<'de>,
{
visitor.visit_unit()
}
}
impl<'de, 'a> EnumAccess<'de> for SimpleTypeDeserializer<'de, 'a> {
type Error = DeError;
type Variant = SimpleTypeUnitOnly;
fn variant_seed<V>(self, seed: V) -> Result<(V::Value, Self::Variant), DeError>
where
V: DeserializeSeed<'de>,
{
let name = seed.deserialize(self)?;
Ok((name, SimpleTypeUnitOnly))
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
/// Deserializer of variant data, that supports only unit variants.
/// Attempt to deserialize newtype, tuple or struct variant will return a
/// [`DeError::Unsupported`] error.
pub struct SimpleTypeUnitOnly;
impl<'de> VariantAccess<'de> for SimpleTypeUnitOnly {
type Error = DeError;
#[inline]
fn unit_variant(self) -> Result<(), DeError> {
Ok(())
}
fn newtype_variant_seed<T>(self, _seed: T) -> Result<T::Value, DeError>
where
T: DeserializeSeed<'de>,
{
Err(DeError::Unsupported(
"enum newtype variants are not supported for XSD `simpleType`s".into(),
))
}
fn tuple_variant<V>(self, _len: usize, _visitor: V) -> Result<V::Value, DeError>
where
V: Visitor<'de>,
{
Err(DeError::Unsupported(
"enum tuple variants are not supported for XSD `simpleType`s".into(),
))
}
fn struct_variant<V>(
self,
_fields: &'static [&'static str],
_visitor: V,
) -> Result<V::Value, DeError>
where
V: Visitor<'de>,
{
Err(DeError::Unsupported(
"enum struct variants are not supported for XSD `simpleType`s".into(),
))
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
#[cfg(test)]
mod tests {
use super::*;
use crate::se::simple_type::{QuoteTarget, SimpleTypeSerializer};
use crate::se::{Indent, QuoteLevel};
use crate::utils::{ByteBuf, Bytes};
use serde::de::IgnoredAny;
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
macro_rules! simple_only {
($encoding:ident, $name:ident: $type:ty = $xml:expr => $result:expr) => {
#[test]
fn $name() {
let decoder = Decoder::$encoding();
let xml = $xml;
let de = SimpleTypeDeserializer::new(CowRef::Input(xml.as_ref()), true, decoder);
let data: $type = Deserialize::deserialize(de).unwrap();
assert_eq!(data, $result);
}
};
}
macro_rules! simple {
($encoding:ident, $name:ident: $type:ty = $xml:expr => $result:expr) => {
#[test]
fn $name() {
let decoder = Decoder::$encoding();
let xml = $xml;
let de = SimpleTypeDeserializer::new(CowRef::Input(xml.as_ref()), true, decoder);
let data: $type = Deserialize::deserialize(de).unwrap();
assert_eq!(data, $result);
// Roundtrip to ensure that serializer corresponds to deserializer
assert_eq!(
data.serialize(SimpleTypeSerializer {
writer: String::new(),
target: QuoteTarget::Text,
level: QuoteLevel::Full,
indent: Indent::None,
})
.unwrap(),
xml
);
}
};
}
macro_rules! err {
($encoding:ident, $name:ident: $type:ty = $xml:expr => $kind:ident($reason:literal)) => {
#[test]
fn $name() {
let decoder = Decoder::$encoding();
let xml = $xml;
let de = SimpleTypeDeserializer::new(CowRef::Input(xml.as_ref()), true, decoder);
let err = <$type as Deserialize>::deserialize(de).unwrap_err();
match err {
DeError::$kind(e) => assert_eq!(e, $reason),
_ => panic!(
"Expected `{}({})`, found `{:?}`",
stringify!($kind),
$reason,
err
),
}
}
};
}
#[derive(Debug, Deserialize, Serialize, PartialEq)]
struct Unit;
#[derive(Debug, Deserialize, Serialize, PartialEq)]
struct Newtype(String);
#[derive(Debug, Deserialize, Serialize, PartialEq)]
struct BorrowedNewtype<'a>(&'a str);
#[derive(Debug, Deserialize, Serialize, PartialEq)]
struct Struct {
key: String,
val: usize,
}
#[derive(Debug, Deserialize, Serialize, PartialEq)]
enum Enum {
Unit,
Newtype(String),
Tuple(String, usize),
Struct { key: String, val: usize },
}
#[derive(Debug, Deserialize, PartialEq)]
#[serde(field_identifier)]
enum Id {
Field,
}
#[derive(Debug, Deserialize)]
#[serde(transparent)]
struct Any(IgnoredAny);
impl PartialEq for Any {
fn eq(&self, _other: &Any) -> bool {
true
}
}
/// Tests for deserialize atomic and union values, as defined in XSD specification
mod atomic {
use super::*;
use crate::se::simple_type::AtomicSerializer;
use pretty_assertions::assert_eq;
/// Checks that given `$input` successfully deserializing into given `$result`
macro_rules! deserialized_to_only {
($name:ident: $type:ty = $input:literal => $result:expr) => {
#[test]
fn $name() {
let de = AtomicDeserializer {
content: Content::Input($input),
escaped: true,
};
let data: $type = Deserialize::deserialize(de).unwrap();
assert_eq!(data, $result);
}
};
}
/// Checks that given `$input` successfully deserializing into given `$result`
/// and the result is serialized back to the `$input`
macro_rules! deserialized_to {
($name:ident: $type:ty = $input:literal => $result:expr) => {
#[test]
fn $name() {
let de = AtomicDeserializer {
content: Content::Input($input),
escaped: true,
};
let data: $type = Deserialize::deserialize(de).unwrap();
assert_eq!(data, $result);
// Roundtrip to ensure that serializer corresponds to deserializer
assert_eq!(
data.serialize(AtomicSerializer {
writer: String::new(),
target: QuoteTarget::Text,
level: QuoteLevel::Full,
})
.unwrap(),
$input
);
}
};
}
/// Checks that attempt to deserialize given `$input` as a `$type` results to a
/// deserialization error `$kind` with `$reason`
macro_rules! err {
($name:ident: $type:ty = $input:literal => $kind:ident($reason:literal)) => {
#[test]
fn $name() {
let de = AtomicDeserializer {
content: Content::Input($input),
escaped: true,
};
let err = <$type as Deserialize>::deserialize(de).unwrap_err();
match err {