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rune: Implement and use Dynamic container
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| use core::borrow::Borrow; | ||
| use core::hash::Hash; | ||
| use core::ops::Deref; | ||
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| use crate::alloc::{Box, Vec}; | ||
|
|
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| use super::{FromValue, ReprOwned, Rtti, RttiKind, RuntimeError, Tuple, TypeInfo, Value}; | ||
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| use rust_alloc::sync::Arc; | ||
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| /// A reference to a dynamically defined empty type. | ||
| pub struct DynamicEmpty { | ||
| rtti: Arc<Rtti>, | ||
| } | ||
|
|
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| impl FromValue for DynamicEmpty { | ||
| #[inline] | ||
| fn from_value(value: Value) -> Result<Self, RuntimeError> { | ||
| match value.take_repr()? { | ||
| ReprOwned::Dynamic(value) if matches!(value.rtti().kind, RttiKind::Empty) => Ok(Self { | ||
| rtti: value.rtti().clone(), | ||
| }), | ||
| value => Err(RuntimeError::expected_empty(value.type_info())), | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl DynamicEmpty { | ||
| /// Get human readable type information for the dynamic tuple. | ||
| pub fn type_info(&self) -> TypeInfo { | ||
| self.rtti.clone().type_info() | ||
| } | ||
| } | ||
|
|
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| /// A reference to a dynamically defined tuple. | ||
| /// | ||
| /// This derefs into a [`Tuple`], which can be used to access the individual | ||
| /// fields. | ||
| pub struct DynamicTuple { | ||
| rtti: Arc<Rtti>, | ||
| values: Vec<Value>, | ||
| } | ||
|
|
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| impl FromValue for DynamicTuple { | ||
| #[inline] | ||
| fn from_value(value: Value) -> Result<Self, RuntimeError> { | ||
| match value.take_repr()? { | ||
| ReprOwned::Dynamic(value) if matches!(value.rtti().kind, RttiKind::Tuple) => { | ||
| let mut values = Vec::try_with_capacity(value.len())?; | ||
|
|
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| for value in value.borrow_ref()?.iter() { | ||
| values.try_push(value.clone())?; | ||
| } | ||
|
|
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| Ok(Self { | ||
| rtti: value.rtti().clone(), | ||
| values, | ||
| }) | ||
| } | ||
| value => Err(RuntimeError::expected_tuple(value.type_info())), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl DynamicTuple { | ||
| /// Get human readable type information for the dynamic tuple. | ||
| pub fn type_info(&self) -> TypeInfo { | ||
| self.rtti.clone().type_info() | ||
| } | ||
| } | ||
|
|
||
| impl Deref for DynamicTuple { | ||
| type Target = Tuple; | ||
|
|
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| #[inline] | ||
| fn deref(&self) -> &Self::Target { | ||
| Tuple::new(&self.values) | ||
| } | ||
| } | ||
|
|
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| /// A reference to a dynamically defined struct. | ||
| pub struct DynamicStruct { | ||
| rtti: Arc<Rtti>, | ||
| values: Vec<Value>, | ||
| } | ||
|
|
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| impl FromValue for DynamicStruct { | ||
| #[inline] | ||
| fn from_value(value: Value) -> Result<Self, RuntimeError> { | ||
| match value.take_repr()? { | ||
| ReprOwned::Dynamic(value) if matches!(value.rtti().kind, RttiKind::Struct) => { | ||
| let mut values = Vec::try_with_capacity(value.len())?; | ||
|
|
||
| for value in value.borrow_ref()?.iter() { | ||
| values.try_push(value.clone())?; | ||
| } | ||
|
|
||
| Ok(Self { | ||
| rtti: value.rtti().clone(), | ||
| values, | ||
| }) | ||
| } | ||
| value => Err(RuntimeError::expected_struct(value.type_info())), | ||
| } | ||
| } | ||
| } | ||
|
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| impl DynamicStruct { | ||
| /// Get a value from the dynamic struct. | ||
| pub fn get<Q>(&self, key: &Q) -> Option<&Value> | ||
| where | ||
| Box<str>: Borrow<Q>, | ||
| Q: Hash + Eq + ?Sized, | ||
| { | ||
| let index = *self.rtti.fields.get(key)?; | ||
| self.values.get(index) | ||
| } | ||
|
|
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| /// Get human readable type information for the dynamic struct. | ||
| pub fn type_info(&self) -> TypeInfo { | ||
| self.rtti.clone().type_info() | ||
| } | ||
| } |
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