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| author | John Schmidt <john.schmidt.h@gmail.com> | 2022-02-12 16:57:52 +0100 |
|---|---|---|
| committer | John Schmidt <john.schmidt.h@gmail.com> | 2022-03-25 23:15:37 +0100 |
| commit | a7b3082ba0d07c66d2ec19304ffe993d77f714b7 (patch) | |
| tree | 9631a700dd082721a43bc52055fdb4201ef10641 /src/type.zig | |
| parent | 1c33ea2c35e9260babedb116ad527256e0a4ef5e (diff) | |
| download | zig-a7b3082ba0d07c66d2ec19304ffe993d77f714b7.tar.gz zig-a7b3082ba0d07c66d2ec19304ffe993d77f714b7.zip | |
Implement `type.bitSize` for unions
Diffstat (limited to 'src/type.zig')
| -rw-r--r-- | src/type.zig | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/type.zig b/src/type.zig index d5b8e6f5b3..6b7214888d 100644 --- a/src/type.zig +++ b/src/type.zig @@ -3251,8 +3251,20 @@ pub const Type = extern union { const int_tag_ty = ty.intTagType(&buffer); return int_tag_ty.bitSize(target); }, + .@"union", .union_tagged => { - @panic("TODO bitSize unions"); + const union_obj = ty.cast(Payload.Union).?.data; + + const fields = union_obj.fields; + if (fields.count() == 0) return 0; + + assert(union_obj.haveFieldTypes()); + + var size: u64 = 0; + for (fields.values()) |field| { + size = @maximum(size, field.ty.bitSize(target)); + } + return size; }, .vector => { |