Struct Mutator 

pub struct Mutator { /* private fields */ }

Recursion control passed to a typed #[dispatch(mutate)] handler.

The dispatch object owns all pass state. Recursive operations take that object explicitly so Rust can safely reborrow the same &mut self for the child call.

Implementations

impl Mutator

pub fn current(&self) -> &MapValue

Complete borrowed value active at this callback.

pub fn def_region_kind(&self) -> DefRegionKind

Definition-region state active at the callback’s current value.

pub fn region(&self) -> DefRegionKind

Definition region active at the callback’s current value.

pub fn mutate<D, T>(&mut self, dispatch: &mut D, value: &T) -> Result<Any>

where D: MutateDispatch, for<'x> AnyView<'x>: From<&'x T>,

Mutate a borrowed child through the same typed dispatch object.

pub fn mutate_with<D, T>( &mut self, dispatch: &mut D, value: &T, def_region_kind: DefRegionKind, ) -> Result<Any>

where D: MutateDispatch, for<'x> AnyView<'x>: From<&'x T>,

Mutate a borrowed child under an explicit definition-region state.

pub fn maybe_inplace_mutate<D, T>( &mut self, dispatch: &mut D, value: T, ) -> Result<Any>

where D: MutateDispatch, T: Into<Any>,

Mutate an owned child and permit reuse when it remains uniquely owned.

pub fn maybe_inplace_mutate_with<D, T>( &mut self, dispatch: &mut D, value: T, def_region_kind: DefRegionKind, ) -> Result<Any>

where D: MutateDispatch, T: Into<Any>,

Mutate an owned child under an explicit definition-region state.

pub fn default_mutate<D: MutateDispatch>( &mut self, dispatch: &mut D, ) -> Result<Any>

Apply default mutation to the callback’s current value.

pub fn mutate_result<D, T>( &mut self, dispatch: &mut D, value: &T, ) -> Result<UnchangedOr<Any>>

where D: MutateDispatch, for<'x> AnyView<'x>: From<&'x T>,

Mutate a borrowed child while preserving an unchanged result.

pub fn mutate_with_result<D, T>( &mut self, dispatch: &mut D, value: &T, kind: DefRegionKind, ) -> Result<UnchangedOr<Any>>

where D: MutateDispatch, for<'x> AnyView<'x>: From<&'x T>,

Mutate a borrowed child under an explicit region, preserving unchanged.

pub fn default_mutate_result<D: MutateDispatch>( &mut self, dispatch: &mut D, ) -> Result<UnchangedOr<Any>>

Apply default mutation without materializing an unchanged original.

pub fn var_remap_get<D: MutateDispatch>( &mut self, dispatch: &mut D, var: &MapValue, ) -> Result<Option<Any>>

Look up an invocation-local identity substitution.

pub fn var_remap_set<D: MutateDispatch>( &mut self, dispatch: &mut D, var: &MapValue, mutated_value: &Any, ) -> Result<()>

Store an invocation-local identity substitution.