Struct ManualMapMutation 

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

Convert manual Option/Result mapping to .map() method

Example

use ryo_mutations::idiom::ManualMapMutation;

let mutation = ManualMapMutation::new();
// Transforms:
//   match opt {
//       Some(x) => Some(x.to_string()),
//       None => None,
//   }
// Into:
//   opt.map(|x| x.to_string())

Limitations

Currently only detects patterns where the AST represents Some(x) as a Struct pattern with path “Some”. Full TupleStruct pattern support is planned for future AST enhancements.

Fields

target_fn: Option<SymbolId>

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

Implementations

impl ManualMapMutation

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 ManualMapMutation

fn clone(&self) -> ManualMapMutation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ManualMapMutation

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

Formats the value using the given formatter.

impl Default for ManualMapMutation

fn default() -> ManualMapMutation

Returns the “default value” for a type.

impl Mutation for ManualMapMutation

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