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std.ComptimeStringMap: Add support for void value type (i.e. a set)

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This commit is contained in:
Ryan Liptak 2020-05-26 21:56:06 -07:00
parent 62cfc68d2f
commit dfafafac7b
1 changed files with 44 additions and 1 deletions
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43
lib/std/comptime_string_map.zig
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@ -22,7 +22,11 @@ pub fn ComptimeStringMap(comptime V: type, comptime kvs: var) type {
}
}).lenAsc;
for (kvs) |kv, i| {
if (V != void) {
sorted_kvs[i] = .{.key = kv.@"0", .value = kv.@"1"};
} else {
sorted_kvs[i] = .{.key = kv.@"0", .value = {}};
}
}
std.sort.sort(KV, &sorted_kvs, lenAsc);
const min_len = sorted_kvs[0].key.len;
@ -132,3 +136,42 @@ fn testMap(comptime map: var) void {
std.testing.expect(!map.has("missing"));
std.testing.expect(map.has("these"));
}
test "ComptimeStringMap void value type, slice of structs" {
const KV = struct {
@"0": []const u8,
};
const slice: []const KV = &[_]KV{
.{.@"0" = "these"},
.{.@"0" = "have"},
.{.@"0" = "nothing"},
.{.@"0" = "incommon"},
.{.@"0" = "samelen"},
};
const map = ComptimeStringMap(void, slice);
testSet(map);
}
test "ComptimeStringMap void value type, list literal of list literals" {
const map = ComptimeStringMap(void, .{
.{"these"},
.{"have"},
.{"nothing"},
.{"incommon"},
.{"samelen"},
});
testSet(map);
}
fn testSet(comptime map: var) void {
std.testing.expectEqual({}, map.get("have").?);
std.testing.expectEqual({}, map.get("nothing").?);
std.testing.expect(null == map.get("missing"));
std.testing.expectEqual({}, map.get("these").?);
std.testing.expectEqual({}, map.get("samelen").?);
std.testing.expect(!map.has("missing"));
std.testing.expect(map.has("these"));
}