| ... | @@ -349,3 +349,30 @@ pub fn hashBytes(comptime Algo: type, bytes: []const u8) [Algo.digest_length]u8 | ... | @@ -349,3 +349,30 @@ pub fn hashBytes(comptime Algo: type, bytes: []const u8) [Algo.digest_length]u8 |
| 349 | h.final(&out); | 349 | h.final(&out); |
| 350 | return out; | 350 | return out; |
| 351 | } | 351 | } |
| | 352 | |
| | 353 | pub fn readType(reader: anytype, comptime T: type, endian: std.builtin.Endian) !T { |
| | 354 | return switch (@typeInfo(T)) { |
| | 355 | .Struct => |t| { |
| | 356 | switch (t.layout) { |
| | 357 | .Auto, .Extern => { |
| | 358 | var s: T = undefined; |
| | 359 | inline for (std.meta.fields(T)) |field| { |
| | 360 | @field(s, field.name) = try readType(reader, field.type, endian); |
| | 361 | } |
| | 362 | return s; |
| | 363 | }, |
| | 364 | .Packed => return @bitCast(T, try readType(reader, t.backing_integer.?, endian)), |
| | 365 | } |
| | 366 | }, |
| | 367 | .Array => |t| { |
| | 368 | var s: T = undefined; |
| | 369 | for (range(t.len)) |_, i| { |
| | 370 | s[i] = try readType(reader, t.child, endian); |
| | 371 | } |
| | 372 | return s; |
| | 373 | }, |
| | 374 | .Int => try reader.readInt(T, endian), |
| | 375 | .Enum => |t| @intToEnum(T, try readType(reader, t.tag_type, endian)), |
| | 376 | else => |e| @compileError(@tagName(e)), |
| | 377 | }; |
| | 378 | } |
Meghan Denny <hello@nektro.net> 2023-02-09 19:57:58 -08:00