Struct AnyWhenVarBuilder 

pub struct AnyWhenVarBuilder { /* private fields */ }

Type erased when_var! manual builder.

See WhenVarBuilder for more details.

Implementations

impl AnyWhenVarBuilder

pub fn new(default: AnyVar) -> Self

New with value variable used when no other conditions are true.

pub fn push(&mut self, condition: Var<bool>, value: AnyVar) -> &mut Self

Push a conditional value.

When the condition is true and all previous pushed conditions are false the when variable represents the value variable.

pub fn replace_extend(&mut self, other: &Self)

Replace the default value if other has default and extend the conditions with clones of other.

pub fn extend(&mut self, other: &Self)

Extend the conditions with clones of other.

pub fn build(self, value_type: TypeId) -> AnyVar

Build the when var.

The value_type is the when var output value type.

pub fn into_typed<O: VarValue>(self) -> WhenVarBuilder<O>

Convert to typed builder.

Note that the type is not checked.

pub fn try_from_built(var: &AnyVar) -> Option<Self>

If the var was built by build clones the internal conditions, values and default variables into a new builder.

impl AnyWhenVarBuilder

pub fn condition_count(&self) -> usize

Returns the number of conditions set.

Trait Implementations

impl Clone for AnyWhenVarBuilder

fn clone(&self) -> AnyWhenVarBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.