| author |  Andrew Kelley <andrew@ziglang.org> 2022-02-26 15:51:59-07:00 |
| committer | Andrew Kelley <andrew@ziglang.org> 2022-02-26 16:53:23-07:00 |
| log | aefe4046de9b600bb84cb308ec3afb8f020a2db0 |
| tree | 47c632c569d4f1b86db6fe998c9aa51bb07dc1d6 |
| parent | d62229e3ad6069597b74874ba3b84fc185b2fa4c |
Sema: implement `@enumToInt` for unions
2 files changed, 13 insertions(+), 11 deletions(-)
src/Sema.zig+10-10
| ... | ... | @@ -5308,16 +5308,16 @@ fn zirEnumToInt(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!A |
| 5308 | 5308 | |
| 5309 | 5309 | const enum_tag: Air.Inst.Ref = switch (operand_ty.zigTypeTag()) { |
| 5310 | 5310 | .Enum => operand, |
| 5311 | .Union => { | |
| 5312 | //if (!operand_ty.unionHasTag()) { | |
| 5313 | // return sema.fail( | |
| 5314 | // block, | |
| 5315 | // operand_src, | |
| 5316 | // "untagged union '{}' cannot be converted to integer", | |
| 5317 | // .{dest_ty_src}, | |
| 5318 | // ); | |
| 5319 | //} | |
| 5320 | return sema.fail(block, operand_src, "TODO zirEnumToInt for tagged unions", .{}); | |
| 5311 | .Union => blk: { | |
| 5312 | const tag_ty = operand_ty.unionTagType() orelse { | |
| 5313 | return sema.fail( | |
| 5314 | block, | |
| 5315 | operand_src, | |
| 5316 | "untagged union '{}' cannot be converted to integer", | |
| 5317 | .{src}, | |
| 5318 | ); | |
| 5319 | }; | |
| 5320 | break :blk try sema.unionToTag(block, tag_ty, operand, operand_src); | |
| 5321 | 5321 | }, |
| 5322 | 5322 | else => { |
| 5323 | 5323 | return sema.fail(block, operand_src, "expected enum or tagged union, found {}", .{ |
test/behavior/union.zig+3-1
| ... | ... | @@ -704,7 +704,9 @@ test "union with only 1 field casted to its enum type which has enum value speci |
| 704 | 704 | } |
| 705 | 705 | |
| 706 | 706 | test "@enumToInt works on unions" { |
| 707 | if (builtin.zig_backend != .stage1) return error.SkipZigTest; // TODO | |
| 707 | if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO | |
| 708 | if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO | |
| 709 | if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO | |
| 708 | 710 | |
| 709 | 711 | const Bar = union(enum) { |
| 710 | 712 | A: bool, |