Struct ReplaceMatchArmMutation 

pub struct ReplaceMatchArmMutation {
    pub function_id: SymbolId,
    pub enum_name: String,
    pub old_pattern: String,
    pub new_pattern: String,
    pub new_body: String,
}

Replace a match arm (pattern + body) in an existing match expression

This mutation allows replacing both the pattern and body of a match arm atomically, solving the issue where ReplaceExpr only modifies the body but leaves the pattern unchanged.

Fields

function_id: SymbolId

Target function SymbolId

enum_name: String

Enum name to identify the target match expression

old_pattern: String

Pattern to match for replacement (e.g., “PathSegment::Slice { start: _, end: _ }”)

new_pattern: String

New pattern string (e.g., “PathSegment::Slice { start, end }”)

new_body: String

New body string (e.g., “{ /* implementation */ }”)

Implementations

impl ReplaceMatchArmMutation

pub fn new( function_id: SymbolId, enum_name: impl Into<String>, old_pattern: impl Into<String>, new_pattern: impl Into<String>, new_body: impl Into<String>, ) -> Self

Trait Implementations

impl Clone for ReplaceMatchArmMutation

fn clone(&self) -> ReplaceMatchArmMutation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReplaceMatchArmMutation

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

Formats the value using the given formatter.

impl Mutation for ReplaceMatchArmMutation

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

impl ToSerializable for ReplaceMatchArmMutation

fn to_serializable(&self) -> SerializableMutation