Struct PatternGenerator 

pub struct PatternGenerator;

Generator for Rust pattern matching from C tag checks.

Algorithm

1. Detect tag check: Identify if-conditions comparing tag fields
2. Extract variant info: Parse tag value and union field access
3. Generate match arms: Convert if-else-if chain to match arms
4. Capitalize variants: Convert C constants to PascalCase
5. Add wildcard: Ensure exhaustive matching with _ arm

Implementations

impl PatternGenerator

pub fn new() -> Self

Create a new pattern generator.

pub fn transform_tag_check(&self, stmt: &HirStatement) -> String

Transform C tag check (if statement) into Rust match expression.

Arguments

• stmt - HIR if statement checking a tag field

Returns

Rust match expression as a string, or empty string if not a tag check

Trait Implementations

impl Default for PatternGenerator

fn default() -> Self

Returns the “default value” for a type.