| ... | ... | @@ -312,6 +312,32 @@ pub fn GenericReader( |
| 312 | 312 | const ptr: *const Context = @alignCast(@ptrCast(context)); |
| 313 | 313 | return readFn(ptr.*, buffer); |
| 314 | 314 | } |
| 315 | |
| 316 | /// Helper for bridging to the new `Reader` API while upgrading. |
| 317 | pub fn adaptToNewApi(self: *const Self) Adapter { |
| 318 | return .{ |
| 319 | .derp_reader = self.*, |
| 320 | .new_interface = .{ |
| 321 | .buffer = &.{}, |
| 322 | .vtable = &.{ .stream = Adapter.stream }, |
| 323 | }, |
| 324 | }; |
| 325 | } |
| 326 | |
| 327 | pub const Adapter = struct { |
| 328 | derp_reader: Self, |
| 329 | new_interface: Reader, |
| 330 | err: ?Error = null, |
| 331 | |
| 332 | fn stream(r: *Reader, w: *Writer, limit: Limit) Reader.StreamError!usize { |
| 333 | const a: *@This() = @fieldParentPtr("new_interface", r); |
| 334 | const buf = limit.slice(try w.writableSliceGreedy(1)); |
| 335 | return a.derp_reader.read(buf) catch |err| { |
| 336 | a.err = err; |
| 337 | return error.ReadFailed; |
| 338 | }; |
| 339 | } |
| 340 | }; |
| 315 | 341 | }; |
| 316 | 342 | } |
| 317 | 343 | |
Andrew Kelley <andrew@ziglang.org> 2025-07-10 19:20:26-07:00
lib