authorgravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2022-03-11 12:59:20-07:00
committergravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2022-03-11 12:59:20-07:00
loga2517117e7cffcc4be21e944f2b4f8661c8f15a3
tree5e80c067eedc2941d8a30d62706a11e150f728c1
parent6a9c9afbae24897a5c6fa843794be33e4ed33f12

Sema: make `@hasField` support tuples too

2 files changed, 12 insertions(+), 0 deletions(-)

src/Sema.zig+4
......@@ -7795,6 +7795,10 @@ fn zirHasField(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!Ai
77957795 if (mem.eql(u8, name, field_name)) break true;
77967796 } else false;
77977797 }
7798 if (ty.isTuple()) {
7799 const field_index = std.fmt.parseUnsigned(u32, field_name, 10) catch break :hf false;
7800 break :hf field_index < ty.structFieldCount();
7801 }
77987802 break :hf switch (ty.zigTypeTag()) {
77997803 .Struct => ty.structFields().contains(field_name),
78007804 .Union => ty.unionFields().contains(field_name),
test/behavior/hasfield.zig+8
......@@ -38,4 +38,12 @@ test "@hasField" {
3838 const anon = @TypeOf(.{ .a = 1 });
3939 try expect(@hasField(anon, "a") == true);
4040 try expect(@hasField(anon, "b") == false);
41
42 const tuple = @TypeOf(.{ 1, 2 });
43 try expect(@hasField(tuple, "a") == false);
44 try expect(@hasField(tuple, "b") == false);
45 try expect(@hasField(tuple, "0") == true);
46 try expect(@hasField(tuple, "1") == true);
47 try expect(@hasField(tuple, "2") == false);
48 try expect(@hasField(tuple, "9999999999999999999999999") == false);
4149}