Struct perseus::state::TemplateStateWithType

pub struct TemplateStateWithType<T: Serialize + DeserializeOwned> { /* private fields */ }

A wrapper for template state stored as a Value. This loses the underlying type information, but allows for serialization. This is a necessary compromise, since, without types being first-class citizens in Rust, full template type management appears presently impossible.

Implementations

impl<T: Serialize + DeserializeOwned + 'static> TemplateStateWithType<T>

pub fn empty() -> Self

Creates a new empty template state.

pub fn is_empty(&self) -> bool

Checks if this state is empty. This not only checks for states created as Value::Null, but also those created with () explicitly set as their underlying type.

pub fn from_value(v: Value) -> Self

Creates a new template state from a pre-deserialized Value.

Note that end users should almost always prefer ::from_str(), and this is intended primarily for server integrations.

Trait Implementations

impl<T: Clone + Serialize + DeserializeOwned> Clone for TemplateStateWithType<T>

fn clone(&self) -> TemplateStateWithType<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug + Serialize + DeserializeOwned> Debug for TemplateStateWithType<T>

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

Formats the value using the given formatter.