Struct MapUnwrapOrMutation 

pub struct MapUnwrapOrMutation {
    pub target_fn: Option<SymbolId>,
}

Convert .map().unwrap_or() chains to .map_or()

Example

use ryo_mutations::idiom::MapUnwrapOrMutation;

let mutation = MapUnwrapOrMutation::new();
// Transforms: opt.map(|x| x + 1).unwrap_or(0)
// Into:       opt.map_or(0, |x| x + 1)

Fields

target_fn: Option<SymbolId>

Target function SymbolId. If None, applies to all functions.

Implementations

impl MapUnwrapOrMutation

pub fn new() -> Self

pub fn in_function(self, id: SymbolId) -> Self

Only apply in a specific function

pub fn transform_block(&self, block: &mut PureBlock) -> usize

Trait Implementations

impl Clone for MapUnwrapOrMutation

fn clone(&self) -> MapUnwrapOrMutation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MapUnwrapOrMutation

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

Formats the value using the given formatter.

impl Default for MapUnwrapOrMutation

fn default() -> MapUnwrapOrMutation

Returns the “default value” for a type.

impl Mutation for MapUnwrapOrMutation

fn describe(&self) -> String

Get a description of this mutation

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

Get the mutation type name

fn box_clone(&self) -> Box<dyn Mutation>

Clone this mutation into a new Box

fn validate(&self, _file: &PureFile) -> ValidationResult

Validate the mutation before applying

fn can_proceed(&self, file: &PureFile, strategy: ValidationStrategy) -> bool

Check if this mutation can proceed with the given strategy