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stage2: add error set type equality

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This commit is contained in:
Jacob G-W 2021-08-17 10:49:17 -04:00 committed by Veikka Tuominen
parent 2129cc5c54
commit d785dc49aa
2 changed files with 34 additions and 7 deletions
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23
src/type.zig
View File

@ -534,15 +534,24 @@ pub const Type = extern union {
return a_data.error_set.eql(b_data.error_set) and a_data.payload.eql(b_data.payload);
},
.ErrorSet => {
const a_is_anyerror = a.tag() == .anyerror;
const b_is_anyerror = b.tag() == .anyerror;
if (a.tag() == .anyerror and b.tag() == .anyerror) {
return true;
}
if (a_is_anyerror and b_is_anyerror) return true;
if (a_is_anyerror or b_is_anyerror) return false;
if (a.tag() == .error_set and b.tag() == .error_set) {
return a.castTag(.error_set).?.data.owner_decl == b.castTag(.error_set).?.data.owner_decl;
}
std.debug.panic("TODO implement Type equality comparison of {} and {}", .{
a.tag(), b.tag(),
});
if (a.tag() == .error_set_inferred and b.tag() == .error_set_inferred) {
return a.castTag(.error_set_inferred).?.data.func == b.castTag(.error_set_inferred).?.data.func;
}
if (a.tag() == .error_set_single and b.tag() == .error_set_single) {
const a_data = a.castTag(.error_set_single).?.data;
const b_data = b.castTag(.error_set_single).?.data;
return std.mem.eql(u8, a_data, b_data);
}
return false;
},
.Opaque,
.Float,

18
test/cases.zig
View File

@ -1567,6 +1567,24 @@ pub fn addCases(ctx: *TestContext) !void {
":2:20: note: '||' merges error sets; 'or' performs boolean OR",
});
}
{
var case = ctx.exe("error set equality", linux_x64);
case.addCompareOutput(
\\pub fn main() void {
\\ assert(@TypeOf(error.Foo) == @TypeOf(error.Foo));
\\ assert(@TypeOf(error.Bar) != @TypeOf(error.Foo));
\\ assert(anyerror == anyerror);
\\ assert(error{Foo} != error{Foo});
\\ // TODO put inferred error sets here when @typeInfo works
\\}
\\fn assert(b: bool) void {
\\ if (!b) unreachable;
\\}
,
"",
);
}
{
var case = ctx.exe("inline assembly", linux_x64);