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MemoryVariableStorage

yarnspinner::runtime

Struct MemoryVariableStorage

pub struct MemoryVariableStorage(/* private fields */);

Expand description

A simple concrete implementation of VariableStorage that keeps all variables in memory.

Implementations§

impl MemoryVariableStorage

pub fn new() -> MemoryVariableStorage

Creates a new empty MemoryVariableStorage.

Trait Implementations§

impl Clone for MemoryVariableStorage

fn clone(&self) -> MemoryVariableStorage

Returns a duplicate of the value. Read more

1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Debug for MemoryVariableStorage

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

impl Default for MemoryVariableStorage

fn default() -> MemoryVariableStorage

Returns the “default value” for a type. Read more

impl VariableStorage for MemoryVariableStorage

fn clone_shallow(&self) -> Box<dyn VariableStorage>

Creates a shallow clone of this variable storage, i.e. a clone that shares the same underlying storage and will thus be perfectly in sync with the original instance.

fn set( &mut self, name: String, value: YarnValue, ) -> Result<(), VariableStorageError>

Sets the value of a variable. Must fail with a VariableStorageError::InvalidVariableName if the variable name does not start with a $.

fn get(&self, name: &str) -> Result<YarnValue, VariableStorageError>

Gets the value of a variable. Must fail with a VariableStorageError::InvalidVariableName if the variable name does not start with a $. If the variable is not defined, must fail with a VariableStorageError::VariableNotFound.

fn extend( &mut self, values: HashMap<String, YarnValue>, ) -> Result<(), VariableStorageError>

Extends this variable storage with the given values. Must fail with a VariableStorageError::InvalidVariableName if any of the variable names do not start with a $. Existing variables must be overwritten.

fn variables(&self) -> HashMap<String, YarnValue>

Returns a map of all variables in this variable storage.

fn clear(&mut self)

Clears all variables in this variable storage.

fn as_any(&self) -> &(dyn Any + 'static)

Gets the VariableStorage as a trait object. This allows retrieving the concrete type by downcasting, using the downcast_ref method available through the Any trait.

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Gets the VariableStorage as a mutable trait object. This allows retrieving the concrete type by downcasting, using the downcast_mut method available through the Any trait.

fn contains(&self, name: &str) -> bool

Returns true if the variable is defined, false otherwise.

Auto Trait Implementations§

impl Freeze for MemoryVariableStorage

impl RefUnwindSafe for MemoryVariableStorage

impl Send for MemoryVariableStorage

impl Sync for MemoryVariableStorage

impl Unpin for MemoryVariableStorage

impl UnsafeUnpin for MemoryVariableStorage

impl UnwindSafe for MemoryVariableStorage

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> AnyExt for T
where T: Any + ?Sized,

fn downcast_ref<T>(this: &Self) -> Option<&T>
where T: Any,

Attempts to downcast this to T behind reference

fn downcast_mut<T>(this: &mut Self) -> Option<&mut T>
where T: Any,

Attempts to downcast this to T behind mutable reference

fn downcast_rc<T>(this: Rc<Self>) -> Result<Rc<T>, Rc<Self>>
where T: Any,

Attempts to downcast this to T behind Rc pointer

fn downcast_arc<T>(this: Arc<Self>) -> Result<Arc<T>, Arc<Self>>
where T: Any,

Attempts to downcast this to T behind Arc pointer

fn downcast_box<T>(this: Box<Self>) -> Result<Box<T>, Box<Self>>
where T: Any,

Attempts to downcast this to T behind Box pointer

fn downcast_move<T>(this: Self) -> Option<T>
where T: Any, Self: Sized,

Attempts to downcast owned Self to T, useful only in generic context as a workaround for specialization

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T, X> CoerceTo<T> for X
where T: CoerceFrom<X> + ?Sized,

fn coerce_rc_to(self: Rc<X>) -> Rc<T>

fn coerce_box_to(self: Box<X>) -> Box<T>

fn coerce_ref_to(&self) -> &T

fn coerce_mut_to(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T> ErasedDestructor for T
where T: 'static,