Commit ecb77af5343c58bbd8023ded0ebf241abe1b0dfa | zig

author	Andrew Kelley <andrew@ziglang.org> 2019-12-06 17:20:27-05:00
committer	Andrew Kelley <andrew@ziglang.org> 2019-12-06 17:20:27-05:00
log	ecb77af5343c58bbd8023ded0ebf241abe1b0dfa
tree	6a60bc2870c64f08726841b78f2d63434eaba7e6
parent	80a72c225cf2a08e683936921dfda07f93cef1b8
signature	Commit is signed but in an unrecognized format.

closes #3742

2 files changed, 39 insertions(+), 0 deletions(-)

test/stage1/behavior.zig+1

test/stage1/behavior/bugs/3742.zig created+38

...	...	@@ -0,0 +1,38 @@
	1	const std = @import("std");
	2
	3	pub const GET = struct {
	4	key: []const u8,
	5
	6	pub fn init(key: []const u8) GET {
	7	return .{ .key = key };
	8	}
	9
	10	pub const Redis = struct {
	11	pub const Command = struct {
	12	pub fn serialize(self: GET, comptime rootSerializer: type) void {
	13	return rootSerializer.serializeCommand(.{ "GET", self.key });
	14	}
	15	};
	16	};
	17	};
	18
	19	pub fn isCommand(comptime T: type) bool {
	20	const tid = @typeId(T);
	21	return (tid == .Struct or tid == .Enum or tid == .Union) and
	22	@hasDecl(T, "Redis") and @hasDecl(T.Redis, "Command");
	23	}
	24
	25	pub const ArgSerializer = struct {
	26	pub fn serializeCommand(command: var) void {
	27	const CmdT = @typeOf(command);
	28
	29	if (comptime isCommand(CmdT)) {
	30	// COMMENTING THE NEXT LINE REMOVES THE ERROR
	31	return CmdT.Redis.Command.serialize(command, ArgSerializer);
	32	}
	33	}
	34	};
	35
	36	test "fixed" {
	37	ArgSerializer.serializeCommand(GET.init("banana"));
	38	}