OFile

const OFile = struct {
    mapped_memory: []align(std.heap.page_size_min) const u8,
    dwarf: Dwarf,
    strtab: []const u8,
    symtab_raw: []align(1) const macho.nlist_64,
    /// All named symbols in `symtab_raw`. Stored `u32` key is the index into `symtab_raw`. Accessed
    /// through `SymbolAdapter`, so that the symbol name is used as the logical key.
    symbols_by_name: std.array_hash_map.Custom(u32, void, void, true),

    const SymbolAdapter = struct {
        strtab: []const u8,
        symtab_raw: []align(1) const macho.nlist_64,
        pub fn hash(ctx: SymbolAdapter, sym_name: []const u8) u32 {
            _ = ctx;
            return @truncate(std.hash.Wyhash.hash(0, sym_name));
        }
        pub fn eql(ctx: SymbolAdapter, a_sym_name: []const u8, b_sym_index: u32, b_index: usize) bool {
            _ = b_index;
            var b_sym = ctx.symtab_raw[b_sym_index];
            if (builtin.cpu.arch.endian() != .little) std.mem.byteSwapAllFields(macho.nlist_64, &b_sym);
            const b_sym_name = std.mem.sliceTo(ctx.strtab[b_sym.n_strx..], 0);
            return mem.eql(u8, a_sym_name, b_sym_name);
        }
    };
}