authorgravatar for hello@nektro.netMeghan Denny <hello@nektro.net> 2023-05-19 12:48:28-07:00
committergravatar for git@vexu.euVeikka Tuominen <git@vexu.eu> 2023-05-20 11:21:06+03:00
log7077e90b3f8991c844deb08a16ad3f4e0569398f
treecb6072804e43987cbb563bf3d5016c72ca986e94
parentccfb0d408d5ffb40f77a8ad1fb57f0bb854583ad

std.meta: allow ArgsTuple to be used on functions with comptime parameters

any comptime parameter sets `.is_generic` to be true but in many cases these will still be discrete types available in `.params`

1 files changed, 2 insertions(+), 3 deletions(-)

lib/std/meta.zig+2-3
......@@ -1037,14 +1037,12 @@ pub fn ArgsTuple(comptime Function: type) type {
10371037 @compileError("ArgsTuple expects a function type");
10381038
10391039 const function_info = info.Fn;
1040 if (function_info.is_generic)
1041 @compileError("Cannot create ArgsTuple for generic function");
10421040 if (function_info.is_var_args)
10431041 @compileError("Cannot create ArgsTuple for variadic function");
10441042
10451043 var argument_field_list: [function_info.params.len]type = undefined;
10461044 inline for (function_info.params, 0..) |arg, i| {
1047 const T = arg.type.?;
1045 const T = arg.type orelse @compileError("cannot create ArgsTuple for function with an 'anytype' parameter");
10481046 argument_field_list[i] = T;
10491047 }
10501048
......@@ -1116,6 +1114,7 @@ test "ArgsTuple" {
11161114 TupleTester.assertTuple(.{u32}, ArgsTuple(fn (a: u32) []const u8));
11171115 TupleTester.assertTuple(.{ u32, f16 }, ArgsTuple(fn (a: u32, b: f16) noreturn));
11181116 TupleTester.assertTuple(.{ u32, f16, []const u8, void }, ArgsTuple(fn (a: u32, b: f16, c: []const u8, void) noreturn));
1117 TupleTester.assertTuple(.{u32}, ArgsTuple(fn (comptime a: u32) []const u8));
11191118}
11201119
11211120test "Tuple" {