Function match_ty_with_ident 

pub fn match_ty_with_ident(
    tcx: TyCtxt<'_>,
    def_id: DefId,
    type_ident: String,
) -> Option<Ty<'_>>

Match a type identifier string to a concrete Rust type

This function attempts to match a given type identifier (e.g., “u32”, “T”, “MyStruct”) to a type in the provided parameter type list. It handles:

1. Built-in primitive types (u32, usize, etc.)
2. Generic type parameters (T, U, etc.)
3. User-defined types found in the parameter list

Arguments:

• tcx: Type context for querying compiler information
• type_ident: String representing the type identifier to match
• param_ty: List of parameter types from the function signature

Returns:

• Some(Ty) if a matching type is found
• None if no match is found