Enum liquid_value::State

pub enum State {
    Truthy,
    DefaultValue,
    Empty,
    Blank,
}

Queryable state for a Value.

See tables in https://stackoverflow.com/questions/885414/a-concise-explanation-of-nil-v-empty-v-blank-in-ruby-on-rails

Variants

Truthy

Is the value truthy?

DefaultValue

Is the value the same as default initialized?

Empty

Is the value empty?

Blank

Is the value blank?

Trait Implementations

impl Clone for State

fn clone(&self) -> State

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for State

impl Debug for State

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for State

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Display for State

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

Formats the value using the given formatter.

impl Eq for State

impl From<State> for ValueCow<'static>

fn from(other: State) -> Self

Performs the conversion.

impl From<State> for Value

fn from(other: State) -> Self

Performs the conversion.

impl PartialEq<State> for State

fn eq(&self, other: &State) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Serialize for State

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl StructuralEq for State

impl StructuralPartialEq for State

impl ValueView for State

fn as_debug(&self) -> &dyn Debug

Get a Debug representation

fn render(&self) -> DisplayCow

A Display for a BoxedValue rendered for the user.

fn source(&self) -> DisplayCow

A Display for a Value as source code.

fn type_name(&self) -> &'static str

Report the data type (generally for error reporting).

fn query_state(&self, state: State) -> bool

Query the value's state

fn to_kstr(&self) -> KStringCow

Interpret as a string.

fn to_value(&self) -> Value

Convert to an owned type.

fn as_state(&self) -> Option<State>

Extracts the state if it is one

fn as_scalar(&self) -> Option<ScalarCow>

Extracts the scalar value if it is a scalar.

fn is_scalar(&self) -> bool

Tests whether this value is a scalar

fn as_array(&self) -> Option<&dyn ArrayView>

Extracts the array value if it is an array.

fn is_array(&self) -> bool

Tests whether this value is an array

fn as_object(&self) -> Option<&dyn ObjectView>

Extracts the object value if it is a object.

fn is_object(&self) -> bool

Tests whether this value is an object

fn is_state(&self) -> bool

Tests whether this value is state

fn is_nil(&self) -> bool

Tests whether this value is nil