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Add union #maybe

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This commit is contained in:
gingerBill
2020-02-01 11:10:28 +00:00
parent 4bcb667e97
commit 0f399a7294
10 changed files with 244 additions and 66 deletions
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src/check_type.cpp
+6
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@@ -748,11 +748,17 @@ void check_union_type(CheckerContext *ctx, Type *union_type, Ast *node, Array<Op
union_type->Union.variants = variants;
union_type->Union.no_nil = ut->no_nil;
union_type->Union.maybe = ut->maybe;
if (union_type->Union.no_nil) {
if (variants.count < 2) {
error(ut->align, "A union with #no_nil must have at least 2 variants");
}
}
if (union_type->Union.maybe) {
if (variants.count != 1) {
error(ut->align, "A union with #maybe must have at 1 variant, got %lld", cast(long long)variants.count);
}
}
if (ut->align != nullptr) {
i64 custom_align = 1;