Merge ser/de modules.
This commit is contained in:
Stephen Chung
600
src/serde_impl/de.rs
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600
src/serde_impl/de.rs
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@@ -0,0 +1,600 @@
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//! Implement deserialization support of `Dynamic` for [`serde`](https://crates.io/crates/serde).
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use super::str::ImmutableStringDeserializer;
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use crate::any::{Dynamic, Union};
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use crate::error::ParseErrorType;
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use crate::result::EvalAltResult;
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use crate::token::Position;
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use crate::utils::ImmutableString;
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use serde::de::{
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DeserializeSeed, Deserializer, Error, IntoDeserializer, MapAccess, SeqAccess, Visitor,
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};
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use serde::Deserialize;
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#[cfg(not(feature = "no_index"))]
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use crate::engine::Array;
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#[cfg(not(feature = "no_object"))]
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use crate::engine::Map;
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#[cfg(not(feature = "no_object"))]
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use serde::de::{EnumAccess, VariantAccess};
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use crate::stdlib::{any::type_name, boxed::Box, fmt, string::ToString};
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/// Deserializer for `Dynamic` which is kept as a reference.
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///
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/// The reference is necessary because the deserialized type may hold references
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/// (especially `&str`) to the source `Dynamic`.
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pub struct DynamicDeserializer<'a> {
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value: &'a Dynamic,
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}
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impl<'de> DynamicDeserializer<'de> {
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/// Create a `DynamicDeserializer` from a reference to a `Dynamic` value.
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///
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/// The reference is necessary because the deserialized type may hold references
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/// (especially `&str`) to the source `Dynamic`.
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pub fn from_dynamic(value: &'de Dynamic) -> Self {
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Self { value }
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}
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/// Shortcut for a type conversion error.
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fn type_error<T>(&self) -> Result<T, Box<EvalAltResult>> {
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self.type_error_str(type_name::<T>())
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}
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/// Shortcut for a type conversion error.
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fn type_error_str<T>(&self, error: &str) -> Result<T, Box<EvalAltResult>> {
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EvalAltResult::ErrorMismatchOutputType(
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error.into(),
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self.value.type_name().into(),
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Position::none(),
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)
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.into()
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}
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fn deserialize_int<V: Visitor<'de>>(
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&mut self,
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v: crate::INT,
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visitor: V,
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) -> Result<V::Value, Box<EvalAltResult>> {
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#[cfg(not(feature = "only_i32"))]
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{
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visitor.visit_i64(v)
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}
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#[cfg(feature = "only_i32")]
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{
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visitor.visit_i32(v)
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}
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}
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}
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/// Deserialize a `Dynamic` value into a Rust type that implements `serde::Deserialize`.
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///
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/// # Examples
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///
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/// ```
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/// # fn main() -> Result<(), Box<rhai::EvalAltResult>> {
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/// # #[cfg(not(feature = "no_index"))]
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/// # #[cfg(not(feature = "no_object"))]
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/// # {
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/// use rhai::{Dynamic, Array, Map, INT};
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/// use rhai::serde::from_dynamic;
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/// use serde::Deserialize;
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///
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/// #[derive(Debug, Deserialize, PartialEq)]
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/// struct Hello {
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/// a: INT,
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/// b: bool,
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/// }
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///
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/// #[derive(Debug, Deserialize, PartialEq)]
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/// struct Test {
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/// int: u32,
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/// seq: Vec<String>,
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/// obj: Hello,
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/// }
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///
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/// let mut map = Map::new();
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/// map.insert("int".into(), Dynamic::from(42_u32));
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///
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/// let mut map2 = Map::new();
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/// map2.insert("a".into(), (123 as INT).into());
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/// map2.insert("b".into(), true.into());
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///
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/// map.insert("obj".into(), map2.into());
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///
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/// let arr: Array = vec!["foo".into(), "bar".into(), "baz".into()];
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/// map.insert("seq".into(), arr.into());
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///
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/// let value: Test = from_dynamic(&map.into())?;
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///
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/// let expected = Test {
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/// int: 42,
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/// seq: vec!["foo".into(), "bar".into(), "baz".into()],
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/// obj: Hello { a: 123, b: true },
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/// };
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///
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/// assert_eq!(value, expected);
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/// # }
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/// # Ok(())
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/// # }
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/// ```
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pub fn from_dynamic<'de, T: Deserialize<'de>>(
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value: &'de Dynamic,
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) -> Result<T, Box<EvalAltResult>> {
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T::deserialize(&mut DynamicDeserializer::from_dynamic(value))
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}
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impl Error for Box<EvalAltResult> {
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fn custom<T: fmt::Display>(err: T) -> Self {
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EvalAltResult::ErrorParsing(ParseErrorType::BadInput(err.to_string()), Position::none())
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.into()
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}
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}
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impl<'de> Deserializer<'de> for &mut DynamicDeserializer<'de> {
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type Error = Box<EvalAltResult>;
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fn deserialize_any<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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match &self.value.0 {
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Union::Unit(_) => self.deserialize_unit(visitor),
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Union::Bool(_) => self.deserialize_bool(visitor),
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Union::Str(_) => self.deserialize_str(visitor),
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Union::Char(_) => self.deserialize_char(visitor),
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#[cfg(not(feature = "only_i32"))]
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Union::Int(_) => self.deserialize_i64(visitor),
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#[cfg(feature = "only_i32")]
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Union::Int(_) => self.deserialize_i32(visitor),
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#[cfg(not(feature = "no_float"))]
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Union::Float(_) => self.deserialize_f64(visitor),
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#[cfg(not(feature = "no_index"))]
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Union::Array(_) => self.deserialize_seq(visitor),
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#[cfg(not(feature = "no_object"))]
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Union::Map(_) => self.deserialize_map(visitor),
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Union::FnPtr(_) => self.type_error(),
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#[cfg(not(feature = "no_std"))]
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Union::TimeStamp(_) => self.type_error(),
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Union::Variant(value) if value.is::<i8>() => self.deserialize_i8(visitor),
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Union::Variant(value) if value.is::<i16>() => self.deserialize_i16(visitor),
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Union::Variant(value) if value.is::<i32>() => self.deserialize_i32(visitor),
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Union::Variant(value) if value.is::<i64>() => self.deserialize_i64(visitor),
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Union::Variant(value) if value.is::<i128>() => self.deserialize_i128(visitor),
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Union::Variant(value) if value.is::<u8>() => self.deserialize_u8(visitor),
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Union::Variant(value) if value.is::<u16>() => self.deserialize_u16(visitor),
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Union::Variant(value) if value.is::<u32>() => self.deserialize_u32(visitor),
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Union::Variant(value) if value.is::<u64>() => self.deserialize_u64(visitor),
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Union::Variant(value) if value.is::<u128>() => self.deserialize_u128(visitor),
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Union::Variant(_) => self.type_error(),
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#[cfg(not(feature = "no_closure"))]
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Union::Shared(_) => self.type_error(),
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}
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}
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fn deserialize_bool<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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visitor.visit_bool(self.value.as_bool().or_else(|_| self.type_error())?)
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}
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fn deserialize_i8<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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if let Ok(v) = self.value.as_int() {
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self.deserialize_int(v, visitor)
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} else {
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self.value
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.downcast_ref::<i8>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_i8(x))
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}
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}
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fn deserialize_i16<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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if let Ok(v) = self.value.as_int() {
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self.deserialize_int(v, visitor)
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} else {
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self.value
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.downcast_ref::<i16>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_i16(x))
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}
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}
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fn deserialize_i32<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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if let Ok(v) = self.value.as_int() {
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self.deserialize_int(v, visitor)
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} else if cfg!(feature = "only_i32") {
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self.type_error()
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} else {
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self.value
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.downcast_ref::<i32>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_i32(x))
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}
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}
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fn deserialize_i64<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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if let Ok(v) = self.value.as_int() {
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self.deserialize_int(v, visitor)
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} else if cfg!(not(feature = "only_i32")) {
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self.type_error()
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} else {
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self.value
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.downcast_ref::<i64>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_i64(x))
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}
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}
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fn deserialize_i128<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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if let Ok(v) = self.value.as_int() {
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self.deserialize_int(v, visitor)
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} else if cfg!(not(feature = "only_i32")) {
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self.type_error()
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} else {
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self.value
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.downcast_ref::<i128>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_i128(x))
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}
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}
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fn deserialize_u8<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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if let Ok(v) = self.value.as_int() {
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self.deserialize_int(v, visitor)
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} else {
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self.value
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.downcast_ref::<u8>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_u8(x))
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}
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}
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fn deserialize_u16<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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if let Ok(v) = self.value.as_int() {
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self.deserialize_int(v, visitor)
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} else {
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self.value
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.downcast_ref::<u16>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_u16(x))
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}
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}
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fn deserialize_u32<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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if let Ok(v) = self.value.as_int() {
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self.deserialize_int(v, visitor)
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} else {
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self.value
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.downcast_ref::<u32>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_u32(x))
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}
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}
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fn deserialize_u64<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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if let Ok(v) = self.value.as_int() {
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self.deserialize_int(v, visitor)
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} else {
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self.value
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.downcast_ref::<u64>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_u64(x))
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}
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}
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fn deserialize_u128<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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if let Ok(v) = self.value.as_int() {
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self.deserialize_int(v, visitor)
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} else {
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self.value
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.downcast_ref::<u128>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_u128(x))
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}
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}
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fn deserialize_f32<V: Visitor<'de>>(self, _visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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#[cfg(not(feature = "no_float"))]
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return self
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.value
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.downcast_ref::<f32>()
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.map_or_else(|| self.type_error(), |&x| _visitor.visit_f32(x));
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#[cfg(feature = "no_float")]
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return self.type_error_str("f32");
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}
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fn deserialize_f64<V: Visitor<'de>>(self, _visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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#[cfg(not(feature = "no_float"))]
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return self
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.value
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.downcast_ref::<f64>()
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.map_or_else(|| self.type_error(), |&x| _visitor.visit_f64(x));
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#[cfg(feature = "no_float")]
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return self.type_error_str("f64");
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}
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fn deserialize_char<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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self.value
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.downcast_ref::<char>()
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.map_or_else(|| self.type_error(), |&x| visitor.visit_char(x))
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}
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fn deserialize_str<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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self.value.downcast_ref::<ImmutableString>().map_or_else(
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|| self.type_error(),
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|x| visitor.visit_borrowed_str(x.as_str()),
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)
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}
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fn deserialize_string<V: Visitor<'de>>(
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self,
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visitor: V,
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) -> Result<V::Value, Box<EvalAltResult>> {
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self.deserialize_str(visitor)
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}
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fn deserialize_bytes<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
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self.type_error()
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}
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fn deserialize_byte_buf<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
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self.type_error()
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}
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fn deserialize_option<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
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self.type_error()
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}
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fn deserialize_unit<V: Visitor<'de>>(self, visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
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self.value
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.downcast_ref::<()>()
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.map_or_else(|| self.type_error(), |_| visitor.visit_unit())
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}
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fn deserialize_unit_struct<V: Visitor<'de>>(
|
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self,
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_name: &'static str,
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visitor: V,
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) -> Result<V::Value, Box<EvalAltResult>> {
|
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self.deserialize_unit(visitor)
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||||
}
|
||||
|
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fn deserialize_newtype_struct<V: Visitor<'de>>(
|
||||
self,
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_name: &'static str,
|
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visitor: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
visitor.visit_newtype_struct(self)
|
||||
}
|
||||
|
||||
fn deserialize_seq<V: Visitor<'de>>(self, _visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
return self.value.downcast_ref::<Array>().map_or_else(
|
||||
|| self.type_error(),
|
||||
|arr| _visitor.visit_seq(IterateArray::new(arr.iter())),
|
||||
);
|
||||
|
||||
#[cfg(feature = "no_index")]
|
||||
return self.type_error();
|
||||
}
|
||||
|
||||
fn deserialize_tuple<V: Visitor<'de>>(
|
||||
self,
|
||||
_len: usize,
|
||||
visitor: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_seq(visitor)
|
||||
}
|
||||
|
||||
fn deserialize_tuple_struct<V: Visitor<'de>>(
|
||||
self,
|
||||
_name: &'static str,
|
||||
_len: usize,
|
||||
visitor: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_seq(visitor)
|
||||
}
|
||||
|
||||
fn deserialize_map<V: Visitor<'de>>(self, _visitor: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
return self.value.downcast_ref::<Map>().map_or_else(
|
||||
|| self.type_error(),
|
||||
|map| _visitor.visit_map(IterateMap::new(map.keys(), map.values())),
|
||||
);
|
||||
|
||||
#[cfg(feature = "no_object")]
|
||||
return self.type_error();
|
||||
}
|
||||
|
||||
fn deserialize_struct<V: Visitor<'de>>(
|
||||
self,
|
||||
_name: &'static str,
|
||||
_fields: &'static [&'static str],
|
||||
visitor: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_map(visitor)
|
||||
}
|
||||
|
||||
fn deserialize_enum<V: Visitor<'de>>(
|
||||
self,
|
||||
_name: &'static str,
|
||||
_variants: &'static [&'static str],
|
||||
visitor: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
if let Ok(s) = self.value.as_str() {
|
||||
visitor.visit_enum(s.into_deserializer())
|
||||
} else {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
if let Some(map) = self.value.downcast_ref::<Map>() {
|
||||
let mut iter = map.iter();
|
||||
let first = iter.next();
|
||||
let second = iter.next();
|
||||
if let (Some((key, value)), None) = (first, second) {
|
||||
visitor.visit_enum(EnumDeserializer {
|
||||
tag: &key,
|
||||
content: DynamicDeserializer::from_dynamic(value),
|
||||
})
|
||||
} else {
|
||||
self.type_error()
|
||||
}
|
||||
} else {
|
||||
self.type_error()
|
||||
}
|
||||
#[cfg(feature = "no_object")]
|
||||
return self.type_error();
|
||||
}
|
||||
}
|
||||
|
||||
fn deserialize_identifier<V: Visitor<'de>>(
|
||||
self,
|
||||
visitor: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_str(visitor)
|
||||
}
|
||||
|
||||
fn deserialize_ignored_any<V: Visitor<'de>>(
|
||||
self,
|
||||
visitor: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_any(visitor)
|
||||
}
|
||||
}
|
||||
|
||||
/// `SeqAccess` implementation for arrays.
|
||||
struct IterateArray<'a, ITER>
|
||||
where
|
||||
ITER: Iterator<Item = &'a Dynamic>,
|
||||
{
|
||||
/// Iterator for a stream of `Dynamic` values.
|
||||
iter: ITER,
|
||||
}
|
||||
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
impl<'a, ITER> IterateArray<'a, ITER>
|
||||
where
|
||||
ITER: Iterator<Item = &'a Dynamic>,
|
||||
{
|
||||
pub fn new(iter: ITER) -> Self {
|
||||
Self { iter }
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a: 'de, 'de, ITER> SeqAccess<'de> for IterateArray<'a, ITER>
|
||||
where
|
||||
ITER: Iterator<Item = &'a Dynamic>,
|
||||
{
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn next_element_seed<T: DeserializeSeed<'de>>(
|
||||
&mut self,
|
||||
seed: T,
|
||||
) -> Result<Option<T::Value>, Box<EvalAltResult>> {
|
||||
// Deserialize each item coming out of the iterator.
|
||||
match self.iter.next() {
|
||||
None => Ok(None),
|
||||
Some(item) => seed
|
||||
.deserialize(&mut DynamicDeserializer::from_dynamic(item))
|
||||
.map(Some),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// `MapAccess` implementation for maps.
|
||||
struct IterateMap<'a, KEYS, VALUES>
|
||||
where
|
||||
KEYS: Iterator<Item = &'a ImmutableString>,
|
||||
VALUES: Iterator<Item = &'a Dynamic>,
|
||||
{
|
||||
// Iterator for a stream of `Dynamic` keys.
|
||||
keys: KEYS,
|
||||
// Iterator for a stream of `Dynamic` values.
|
||||
values: VALUES,
|
||||
}
|
||||
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
impl<'a, KEYS, VALUES> IterateMap<'a, KEYS, VALUES>
|
||||
where
|
||||
KEYS: Iterator<Item = &'a ImmutableString>,
|
||||
VALUES: Iterator<Item = &'a Dynamic>,
|
||||
{
|
||||
pub fn new(keys: KEYS, values: VALUES) -> Self {
|
||||
Self { keys, values }
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a: 'de, 'de, KEYS, VALUES> MapAccess<'de> for IterateMap<'a, KEYS, VALUES>
|
||||
where
|
||||
KEYS: Iterator<Item = &'a ImmutableString>,
|
||||
VALUES: Iterator<Item = &'a Dynamic>,
|
||||
{
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn next_key_seed<K: DeserializeSeed<'de>>(
|
||||
&mut self,
|
||||
seed: K,
|
||||
) -> Result<Option<K::Value>, Box<EvalAltResult>> {
|
||||
// Deserialize each `ImmutableString` key coming out of the keys iterator.
|
||||
match self.keys.next() {
|
||||
None => Ok(None),
|
||||
Some(item) => seed
|
||||
.deserialize(&mut ImmutableStringDeserializer::from_str(item))
|
||||
.map(Some),
|
||||
}
|
||||
}
|
||||
|
||||
fn next_value_seed<V: DeserializeSeed<'de>>(
|
||||
&mut self,
|
||||
seed: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
// Deserialize each value item coming out of the iterator.
|
||||
seed.deserialize(&mut DynamicDeserializer::from_dynamic(
|
||||
self.values.next().unwrap(),
|
||||
))
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
struct EnumDeserializer<'t, 'de: 't> {
|
||||
tag: &'t str,
|
||||
content: DynamicDeserializer<'de>,
|
||||
}
|
||||
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
impl<'t, 'de> EnumAccess<'de> for EnumDeserializer<'t, 'de> {
|
||||
type Error = Box<EvalAltResult>;
|
||||
type Variant = Self;
|
||||
|
||||
fn variant_seed<V>(self, seed: V) -> Result<(V::Value, Self::Variant), Self::Error>
|
||||
where
|
||||
V: DeserializeSeed<'de>,
|
||||
{
|
||||
seed.deserialize(self.tag.into_deserializer())
|
||||
.map(|v| (v, self))
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
impl<'t, 'de> VariantAccess<'de> for EnumDeserializer<'t, 'de> {
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn unit_variant(mut self) -> Result<(), Self::Error> {
|
||||
Deserialize::deserialize(&mut self.content)
|
||||
}
|
||||
|
||||
fn newtype_variant_seed<T>(mut self, seed: T) -> Result<T::Value, Self::Error>
|
||||
where
|
||||
T: DeserializeSeed<'de>,
|
||||
{
|
||||
seed.deserialize(&mut self.content)
|
||||
}
|
||||
|
||||
fn tuple_variant<V>(mut self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
|
||||
where
|
||||
V: Visitor<'de>,
|
||||
{
|
||||
self.content.deserialize_tuple(len, visitor)
|
||||
}
|
||||
|
||||
fn struct_variant<V>(
|
||||
mut self,
|
||||
fields: &'static [&'static str],
|
||||
visitor: V,
|
||||
) -> Result<V::Value, Self::Error>
|
||||
where
|
||||
V: Visitor<'de>,
|
||||
{
|
||||
self.content.deserialize_struct("", fields, visitor)
|
||||
}
|
||||
}
|
||||
5
src/serde_impl/mod.rs
Normal file
5
src/serde_impl/mod.rs
Normal file
@@ -0,0 +1,5 @@
|
||||
//! Helper module defining serialization/deserialization support for [`serde`](https://crates.io/crates/serde).
|
||||
|
||||
pub mod de;
|
||||
pub mod ser;
|
||||
mod str;
|
||||
635
src/serde_impl/ser.rs
Normal file
635
src/serde_impl/ser.rs
Normal file
@@ -0,0 +1,635 @@
|
||||
//! Implement serialization support of `Dynamic` for [`serde`](https://crates.io/crates/serde).
|
||||
|
||||
use crate::any::Dynamic;
|
||||
use crate::result::EvalAltResult;
|
||||
use crate::token::Position;
|
||||
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
use crate::engine::Array;
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
use crate::engine::Map;
|
||||
|
||||
use serde::ser::{
|
||||
Error, SerializeMap, SerializeSeq, SerializeStruct, SerializeTuple, SerializeTupleStruct,
|
||||
Serializer,
|
||||
};
|
||||
use serde::Serialize;
|
||||
|
||||
#[cfg(not(any(feature = "no_object", feature = "no_index")))]
|
||||
use serde::ser::SerializeTupleVariant;
|
||||
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
use serde::ser::SerializeStructVariant;
|
||||
|
||||
use crate::stdlib::{boxed::Box, fmt, string::ToString};
|
||||
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
use crate::stdlib::mem;
|
||||
|
||||
/// Serializer for `Dynamic` which is kept as a reference.
|
||||
pub struct DynamicSerializer {
|
||||
/// Buffer to hold a temporary key.
|
||||
_key: Dynamic,
|
||||
/// Buffer to hold a temporary value.
|
||||
_value: Dynamic,
|
||||
}
|
||||
|
||||
impl DynamicSerializer {
|
||||
/// Create a `DynamicSerializer` from a `Dynamic` value.
|
||||
pub fn new(_value: Dynamic) -> Self {
|
||||
Self {
|
||||
_key: Default::default(),
|
||||
_value,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Serialize a Rust type that implements `serde::Serialize` into a `Dynamic`.
|
||||
///
|
||||
/// # Examples
|
||||
///
|
||||
/// ```
|
||||
/// # fn main() -> Result<(), Box<rhai::EvalAltResult>> {
|
||||
/// # #[cfg(not(feature = "no_index"))]
|
||||
/// # #[cfg(not(feature = "no_object"))]
|
||||
/// # #[cfg(not(feature = "no_float"))]
|
||||
/// # {
|
||||
/// use rhai::{Dynamic, Array, Map, INT};
|
||||
/// use rhai::serde::to_dynamic;
|
||||
/// use serde::Serialize;
|
||||
///
|
||||
/// #[derive(Debug, serde::Serialize, PartialEq)]
|
||||
/// struct Point {
|
||||
/// x: f64,
|
||||
/// y: f64
|
||||
/// }
|
||||
///
|
||||
/// #[derive(Debug, serde::Serialize, PartialEq)]
|
||||
/// struct MyStruct {
|
||||
/// a: i64,
|
||||
/// b: Vec<String>,
|
||||
/// c: bool,
|
||||
/// d: Point
|
||||
/// }
|
||||
///
|
||||
/// let x = MyStruct {
|
||||
/// a: 42,
|
||||
/// b: vec![ "hello".into(), "world".into() ],
|
||||
/// c: true,
|
||||
/// d: Point { x: 123.456, y: 999.0 }
|
||||
/// };
|
||||
///
|
||||
/// // Convert the 'MyStruct' into a 'Dynamic'
|
||||
/// let value = to_dynamic(x)?;
|
||||
///
|
||||
/// assert!(value.is::<Map>());
|
||||
///
|
||||
/// let map = value.cast::<Map>();
|
||||
/// let point = map["d"].read_lock::<Map>().unwrap();
|
||||
/// assert_eq!(*point["x"].read_lock::<f64>().unwrap(), 123.456);
|
||||
/// assert_eq!(*point["y"].read_lock::<f64>().unwrap(), 999.0);
|
||||
/// # }
|
||||
/// # Ok(())
|
||||
/// # }
|
||||
/// ```
|
||||
pub fn to_dynamic<T: Serialize>(value: T) -> Result<Dynamic, Box<EvalAltResult>> {
|
||||
let mut s = DynamicSerializer::new(Default::default());
|
||||
value.serialize(&mut s)
|
||||
}
|
||||
|
||||
impl Error for Box<EvalAltResult> {
|
||||
fn custom<T: fmt::Display>(err: T) -> Self {
|
||||
EvalAltResult::ErrorRuntime(err.to_string(), Position::none()).into()
|
||||
}
|
||||
}
|
||||
|
||||
impl Serializer for &mut DynamicSerializer {
|
||||
type Ok = Dynamic;
|
||||
type Error = Box<EvalAltResult>;
|
||||
type SerializeSeq = DynamicSerializer;
|
||||
type SerializeTuple = DynamicSerializer;
|
||||
type SerializeTupleStruct = DynamicSerializer;
|
||||
#[cfg(not(any(feature = "no_object", feature = "no_index")))]
|
||||
type SerializeTupleVariant = TupleVariantSerializer;
|
||||
#[cfg(any(feature = "no_object", feature = "no_index"))]
|
||||
type SerializeTupleVariant = serde::ser::Impossible<Dynamic, Box<EvalAltResult>>;
|
||||
type SerializeMap = DynamicSerializer;
|
||||
type SerializeStruct = DynamicSerializer;
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
type SerializeStructVariant = StructVariantSerializer;
|
||||
#[cfg(feature = "no_object")]
|
||||
type SerializeStructVariant = serde::ser::Impossible<Dynamic, Box<EvalAltResult>>;
|
||||
|
||||
fn serialize_bool(self, v: bool) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
Ok(v.into())
|
||||
}
|
||||
|
||||
fn serialize_i8(self, v: i8) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "only_i32"))]
|
||||
return self.serialize_i64(i64::from(v));
|
||||
#[cfg(feature = "only_i32")]
|
||||
return self.serialize_i32(i32::from(v));
|
||||
}
|
||||
|
||||
fn serialize_i16(self, v: i16) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "only_i32"))]
|
||||
return self.serialize_i64(i64::from(v));
|
||||
#[cfg(feature = "only_i32")]
|
||||
return self.serialize_i32(i32::from(v));
|
||||
}
|
||||
|
||||
fn serialize_i32(self, v: i32) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "only_i32"))]
|
||||
return self.serialize_i64(i64::from(v));
|
||||
#[cfg(feature = "only_i32")]
|
||||
return Ok(v.into());
|
||||
}
|
||||
|
||||
fn serialize_i64(self, v: i64) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "only_i32"))]
|
||||
return Ok(v.into());
|
||||
#[cfg(feature = "only_i32")]
|
||||
if v > i32::MAX as i64 {
|
||||
return Ok(Dynamic::from(v));
|
||||
} else {
|
||||
return self.serialize_i32(v as i32);
|
||||
}
|
||||
}
|
||||
|
||||
fn serialize_i128(self, v: i128) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "only_i32"))]
|
||||
if v > i64::MAX as i128 {
|
||||
return Ok(Dynamic::from(v));
|
||||
} else {
|
||||
return self.serialize_i64(v as i64);
|
||||
}
|
||||
#[cfg(feature = "only_i32")]
|
||||
if v > i32::MAX as i128 {
|
||||
return Ok(Dynamic::from(v));
|
||||
} else {
|
||||
return self.serialize_i32(v as i32);
|
||||
}
|
||||
}
|
||||
|
||||
fn serialize_u8(self, v: u8) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "only_i32"))]
|
||||
return self.serialize_i64(i64::from(v));
|
||||
#[cfg(feature = "only_i32")]
|
||||
return self.serialize_i32(i32::from(v));
|
||||
}
|
||||
|
||||
fn serialize_u16(self, v: u16) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "only_i32"))]
|
||||
return self.serialize_i64(i64::from(v));
|
||||
#[cfg(feature = "only_i32")]
|
||||
return self.serialize_i32(i32::from(v));
|
||||
}
|
||||
|
||||
fn serialize_u32(self, v: u32) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "only_i32"))]
|
||||
return self.serialize_i64(i64::from(v));
|
||||
#[cfg(feature = "only_i32")]
|
||||
if v > i32::MAX as u32 {
|
||||
return Ok(Dynamic::from(v));
|
||||
} else {
|
||||
return self.serialize_i32(v as i32);
|
||||
}
|
||||
}
|
||||
|
||||
fn serialize_u64(self, v: u64) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "only_i32"))]
|
||||
if v > i64::MAX as u64 {
|
||||
return Ok(Dynamic::from(v));
|
||||
} else {
|
||||
return self.serialize_i64(v as i64);
|
||||
}
|
||||
#[cfg(feature = "only_i32")]
|
||||
if v > i32::MAX as u64 {
|
||||
return Ok(Dynamic::from(v));
|
||||
} else {
|
||||
return self.serialize_i32(v as i32);
|
||||
}
|
||||
}
|
||||
|
||||
fn serialize_u128(self, v: u128) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "only_i32"))]
|
||||
if v > i64::MAX as u128 {
|
||||
return Ok(Dynamic::from(v));
|
||||
} else {
|
||||
return self.serialize_i64(v as i64);
|
||||
}
|
||||
#[cfg(feature = "only_i32")]
|
||||
if v > i32::MAX as u128 {
|
||||
return Ok(Dynamic::from(v));
|
||||
} else {
|
||||
return self.serialize_i32(v as i32);
|
||||
}
|
||||
}
|
||||
|
||||
fn serialize_f32(self, v: f32) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
Ok(Dynamic::from(v))
|
||||
}
|
||||
|
||||
fn serialize_f64(self, v: f64) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
Ok(Dynamic::from(v))
|
||||
}
|
||||
|
||||
fn serialize_char(self, v: char) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
Ok(v.into())
|
||||
}
|
||||
|
||||
fn serialize_str(self, v: &str) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
Ok(v.to_string().into())
|
||||
}
|
||||
|
||||
fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
Ok(Dynamic::from(v.to_vec()))
|
||||
}
|
||||
|
||||
fn serialize_none(self) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
Ok(().into())
|
||||
}
|
||||
|
||||
fn serialize_some<T: ?Sized + Serialize>(
|
||||
self,
|
||||
value: &T,
|
||||
) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
value.serialize(&mut *self)
|
||||
}
|
||||
|
||||
fn serialize_unit(self) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
Ok(().into())
|
||||
}
|
||||
|
||||
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
self.serialize_unit()
|
||||
}
|
||||
|
||||
fn serialize_unit_variant(
|
||||
self,
|
||||
_name: &'static str,
|
||||
_variant_index: u32,
|
||||
variant: &'static str,
|
||||
) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
self.serialize_str(variant)
|
||||
}
|
||||
|
||||
fn serialize_newtype_struct<T: ?Sized + Serialize>(
|
||||
self,
|
||||
_name: &'static str,
|
||||
value: &T,
|
||||
) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
value.serialize(&mut *self)
|
||||
}
|
||||
|
||||
fn serialize_newtype_variant<T: ?Sized + Serialize>(
|
||||
self,
|
||||
_name: &'static str,
|
||||
_variant_index: u32,
|
||||
_variant: &'static str,
|
||||
_value: &T,
|
||||
) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
{
|
||||
let content = to_dynamic(_value)?;
|
||||
make_variant(_variant, content)
|
||||
}
|
||||
#[cfg(feature = "no_object")]
|
||||
return EvalAltResult::ErrorMismatchOutputType(
|
||||
"Dynamic".into(),
|
||||
"map".into(),
|
||||
Position::none(),
|
||||
)
|
||||
.into();
|
||||
}
|
||||
|
||||
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
return Ok(DynamicSerializer::new(Array::new().into()));
|
||||
#[cfg(feature = "no_index")]
|
||||
return EvalAltResult::ErrorMismatchOutputType(
|
||||
"Dynamic".into(),
|
||||
"array".into(),
|
||||
Position::none(),
|
||||
)
|
||||
.into();
|
||||
}
|
||||
|
||||
fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Box<EvalAltResult>> {
|
||||
self.serialize_seq(Some(len))
|
||||
}
|
||||
|
||||
fn serialize_tuple_struct(
|
||||
self,
|
||||
_name: &'static str,
|
||||
len: usize,
|
||||
) -> Result<Self::SerializeTupleStruct, Box<EvalAltResult>> {
|
||||
self.serialize_seq(Some(len))
|
||||
}
|
||||
|
||||
fn serialize_tuple_variant(
|
||||
self,
|
||||
_name: &'static str,
|
||||
_variant_index: u32,
|
||||
_variant: &'static str,
|
||||
_len: usize,
|
||||
) -> Result<Self::SerializeTupleVariant, Box<EvalAltResult>> {
|
||||
#[cfg(not(any(feature = "no_object", feature = "no_index")))]
|
||||
return Ok(TupleVariantSerializer {
|
||||
variant: _variant,
|
||||
array: Array::with_capacity(_len),
|
||||
});
|
||||
#[cfg(any(feature = "no_object", feature = "no_index"))]
|
||||
{
|
||||
#[cfg(feature = "no_object")]
|
||||
let err_type = "map";
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
let err_type = "array";
|
||||
EvalAltResult::ErrorMismatchOutputType(
|
||||
"Dynamic".into(),
|
||||
err_type.into(),
|
||||
Position::none(),
|
||||
)
|
||||
.into()
|
||||
}
|
||||
}
|
||||
|
||||
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
return Ok(DynamicSerializer::new(Map::new().into()));
|
||||
#[cfg(feature = "no_object")]
|
||||
return EvalAltResult::ErrorMismatchOutputType(
|
||||
"Dynamic".into(),
|
||||
"map".into(),
|
||||
Position::none(),
|
||||
)
|
||||
.into();
|
||||
}
|
||||
|
||||
fn serialize_struct(
|
||||
self,
|
||||
_name: &'static str,
|
||||
len: usize,
|
||||
) -> Result<Self::SerializeStruct, Box<EvalAltResult>> {
|
||||
self.serialize_map(Some(len))
|
||||
}
|
||||
|
||||
fn serialize_struct_variant(
|
||||
self,
|
||||
_name: &'static str,
|
||||
_variant_index: u32,
|
||||
_variant: &'static str,
|
||||
_len: usize,
|
||||
) -> Result<Self::SerializeStructVariant, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
return Ok(StructVariantSerializer {
|
||||
variant: _variant,
|
||||
map: Map::with_capacity(_len),
|
||||
});
|
||||
#[cfg(feature = "no_object")]
|
||||
return EvalAltResult::ErrorMismatchOutputType(
|
||||
"Dynamic".into(),
|
||||
"map".into(),
|
||||
Position::none(),
|
||||
)
|
||||
.into();
|
||||
}
|
||||
}
|
||||
|
||||
impl SerializeSeq for DynamicSerializer {
|
||||
type Ok = Dynamic;
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn serialize_element<T: ?Sized + Serialize>(
|
||||
&mut self,
|
||||
_value: &T,
|
||||
) -> Result<(), Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
{
|
||||
let _value = _value.serialize(&mut *self)?;
|
||||
let arr = self._value.downcast_mut::<Array>().unwrap();
|
||||
arr.push(_value);
|
||||
Ok(())
|
||||
}
|
||||
#[cfg(feature = "no_index")]
|
||||
unreachable!()
|
||||
}
|
||||
|
||||
// Close the sequence.
|
||||
fn end(self) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
return Ok(self._value);
|
||||
#[cfg(feature = "no_index")]
|
||||
unreachable!()
|
||||
}
|
||||
}
|
||||
|
||||
impl SerializeTuple for DynamicSerializer {
|
||||
type Ok = Dynamic;
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn serialize_element<T: ?Sized + Serialize>(
|
||||
&mut self,
|
||||
_value: &T,
|
||||
) -> Result<(), Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
{
|
||||
let _value = _value.serialize(&mut *self)?;
|
||||
let arr = self._value.downcast_mut::<Array>().unwrap();
|
||||
arr.push(_value);
|
||||
Ok(())
|
||||
}
|
||||
#[cfg(feature = "no_index")]
|
||||
unreachable!()
|
||||
}
|
||||
|
||||
fn end(self) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
return Ok(self._value);
|
||||
#[cfg(feature = "no_index")]
|
||||
unreachable!()
|
||||
}
|
||||
}
|
||||
|
||||
impl SerializeTupleStruct for DynamicSerializer {
|
||||
type Ok = Dynamic;
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn serialize_field<T: ?Sized + Serialize>(
|
||||
&mut self,
|
||||
_value: &T,
|
||||
) -> Result<(), Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
{
|
||||
let _value = _value.serialize(&mut *self)?;
|
||||
let arr = self._value.downcast_mut::<Array>().unwrap();
|
||||
arr.push(_value);
|
||||
Ok(())
|
||||
}
|
||||
#[cfg(feature = "no_index")]
|
||||
unreachable!()
|
||||
}
|
||||
|
||||
fn end(self) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
return Ok(self._value);
|
||||
#[cfg(feature = "no_index")]
|
||||
unreachable!()
|
||||
}
|
||||
}
|
||||
|
||||
impl SerializeMap for DynamicSerializer {
|
||||
type Ok = Dynamic;
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn serialize_key<T: ?Sized + Serialize>(&mut self, _key: &T) -> Result<(), Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
{
|
||||
self._key = _key.serialize(&mut *self)?;
|
||||
Ok(())
|
||||
}
|
||||
#[cfg(feature = "no_object")]
|
||||
unreachable!()
|
||||
}
|
||||
|
||||
fn serialize_value<T: ?Sized + Serialize>(
|
||||
&mut self,
|
||||
_value: &T,
|
||||
) -> Result<(), Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
{
|
||||
let key = mem::take(&mut self._key)
|
||||
.take_immutable_string()
|
||||
.map_err(|typ| {
|
||||
EvalAltResult::ErrorMismatchOutputType(
|
||||
"string".into(),
|
||||
typ.into(),
|
||||
Position::none(),
|
||||
)
|
||||
})?;
|
||||
let _value = _value.serialize(&mut *self)?;
|
||||
let map = self._value.downcast_mut::<Map>().unwrap();
|
||||
map.insert(key, _value);
|
||||
Ok(())
|
||||
}
|
||||
#[cfg(feature = "no_object")]
|
||||
unreachable!()
|
||||
}
|
||||
|
||||
fn serialize_entry<K: ?Sized + Serialize, T: ?Sized + Serialize>(
|
||||
&mut self,
|
||||
_key: &K,
|
||||
_value: &T,
|
||||
) -> Result<(), Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
{
|
||||
let _key: Dynamic = _key.serialize(&mut *self)?;
|
||||
let _key = _key.take_immutable_string().map_err(|typ| {
|
||||
EvalAltResult::ErrorMismatchOutputType(
|
||||
"string".into(),
|
||||
typ.into(),
|
||||
Position::none(),
|
||||
)
|
||||
})?;
|
||||
let _value = _value.serialize(&mut *self)?;
|
||||
let map = self._value.downcast_mut::<Map>().unwrap();
|
||||
map.insert(_key, _value);
|
||||
Ok(())
|
||||
}
|
||||
#[cfg(feature = "no_object")]
|
||||
unreachable!()
|
||||
}
|
||||
|
||||
fn end(self) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
return Ok(self._value);
|
||||
#[cfg(feature = "no_object")]
|
||||
unreachable!()
|
||||
}
|
||||
}
|
||||
|
||||
impl SerializeStruct for DynamicSerializer {
|
||||
type Ok = Dynamic;
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn serialize_field<T: ?Sized + Serialize>(
|
||||
&mut self,
|
||||
_key: &'static str,
|
||||
_value: &T,
|
||||
) -> Result<(), Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
{
|
||||
let _value = _value.serialize(&mut *self)?;
|
||||
let map = self._value.downcast_mut::<Map>().unwrap();
|
||||
map.insert(_key.into(), _value);
|
||||
Ok(())
|
||||
}
|
||||
#[cfg(feature = "no_object")]
|
||||
unreachable!()
|
||||
}
|
||||
|
||||
fn end(self) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
return Ok(self._value);
|
||||
#[cfg(feature = "no_object")]
|
||||
unreachable!()
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(not(any(feature = "no_object", feature = "no_index")))]
|
||||
pub struct TupleVariantSerializer {
|
||||
variant: &'static str,
|
||||
array: Array,
|
||||
}
|
||||
|
||||
#[cfg(not(any(feature = "no_object", feature = "no_index")))]
|
||||
impl SerializeTupleVariant for TupleVariantSerializer {
|
||||
type Ok = Dynamic;
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn serialize_field<T: ?Sized + Serialize>(
|
||||
&mut self,
|
||||
value: &T,
|
||||
) -> Result<(), Box<EvalAltResult>> {
|
||||
let value = to_dynamic(value)?;
|
||||
self.array.push(value);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn end(self) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
make_variant(self.variant, self.array.into())
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
pub struct StructVariantSerializer {
|
||||
variant: &'static str,
|
||||
map: Map,
|
||||
}
|
||||
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
impl SerializeStructVariant for StructVariantSerializer {
|
||||
type Ok = Dynamic;
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn serialize_field<T: ?Sized + Serialize>(
|
||||
&mut self,
|
||||
key: &'static str,
|
||||
value: &T,
|
||||
) -> Result<(), Box<EvalAltResult>> {
|
||||
let value = to_dynamic(value)?;
|
||||
self.map.insert(key.into(), value);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn end(self) -> Result<Self::Ok, Box<EvalAltResult>> {
|
||||
make_variant(self.variant, self.map.into())
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(not(feature = "no_object"))]
|
||||
fn make_variant(variant: &'static str, value: Dynamic) -> Result<Dynamic, Box<EvalAltResult>> {
|
||||
let mut map = Map::with_capacity(1);
|
||||
map.insert(variant.into(), value);
|
||||
Ok(map.into())
|
||||
}
|
||||
156
src/serde_impl/str.rs
Normal file
156
src/serde_impl/str.rs
Normal file
@@ -0,0 +1,156 @@
|
||||
//! Implement deserialization support of `ImmutableString` for [`serde`](https://crates.io/crates/serde).
|
||||
|
||||
use crate::result::EvalAltResult;
|
||||
use crate::token::Position;
|
||||
use crate::utils::ImmutableString;
|
||||
|
||||
use serde::de::{Deserializer, Visitor};
|
||||
|
||||
use crate::stdlib::{any::type_name, boxed::Box};
|
||||
|
||||
/// Deserializer for `ImmutableString`.
|
||||
pub struct ImmutableStringDeserializer<'a> {
|
||||
value: &'a ImmutableString,
|
||||
}
|
||||
|
||||
impl<'a> ImmutableStringDeserializer<'a> {
|
||||
/// Create an `ImmutableStringDeserializer` from an `ImmutableString` reference.
|
||||
pub fn from_str(value: &'a ImmutableString) -> Self {
|
||||
Self { value }
|
||||
}
|
||||
/// Shortcut for a type conversion error.
|
||||
fn type_error<T>(&self) -> Result<T, Box<EvalAltResult>> {
|
||||
EvalAltResult::ErrorMismatchOutputType(
|
||||
type_name::<T>().into(),
|
||||
"string".into(),
|
||||
Position::none(),
|
||||
)
|
||||
.into()
|
||||
}
|
||||
}
|
||||
|
||||
impl<'de> Deserializer<'de> for &mut ImmutableStringDeserializer<'de> {
|
||||
type Error = Box<EvalAltResult>;
|
||||
|
||||
fn deserialize_any<V: Visitor<'de>>(self, v: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_str(v)
|
||||
}
|
||||
fn deserialize_bool<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_i8<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_i16<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_i32<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_i64<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_u8<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_u16<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_u32<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_u64<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_f32<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_f64<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_char<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_str<V: Visitor<'de>>(self, v: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
// Only allow deserialization into a string.
|
||||
v.visit_borrowed_str(self.value.as_str())
|
||||
}
|
||||
fn deserialize_string<V: Visitor<'de>>(
|
||||
self,
|
||||
visitor: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_str(visitor)
|
||||
}
|
||||
fn deserialize_bytes<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_byte_buf<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_option<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_unit<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_unit_struct<V: Visitor<'de>>(
|
||||
self,
|
||||
_name: &'static str,
|
||||
v: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_unit(v)
|
||||
}
|
||||
fn deserialize_newtype_struct<V: Visitor<'de>>(
|
||||
self,
|
||||
_name: &'static str,
|
||||
v: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
v.visit_newtype_struct(self)
|
||||
}
|
||||
fn deserialize_seq<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_tuple<V: Visitor<'de>>(
|
||||
self,
|
||||
_len: usize,
|
||||
v: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_seq(v)
|
||||
}
|
||||
fn deserialize_tuple_struct<V: Visitor<'de>>(
|
||||
self,
|
||||
_name: &'static str,
|
||||
_len: usize,
|
||||
v: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_seq(v)
|
||||
}
|
||||
fn deserialize_map<V: Visitor<'de>>(self, _: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_struct<V: Visitor<'de>>(
|
||||
self,
|
||||
_name: &'static str,
|
||||
_fields: &'static [&'static str],
|
||||
v: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_map(v)
|
||||
}
|
||||
fn deserialize_enum<V: Visitor<'de>>(
|
||||
self,
|
||||
_name: &'static str,
|
||||
_variants: &'static [&'static str],
|
||||
_: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.type_error()
|
||||
}
|
||||
fn deserialize_identifier<V: Visitor<'de>>(self, v: V) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_str(v)
|
||||
}
|
||||
fn deserialize_ignored_any<V: Visitor<'de>>(
|
||||
self,
|
||||
v: V,
|
||||
) -> Result<V::Value, Box<EvalAltResult>> {
|
||||
self.deserialize_any(v)
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user