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variants: assert changes

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* data/variant.hh (swap): More asserts can't hurt. Don't perform useless swaps.
(build): Deactivate problematic asserts, pending further investigation.
(variant): Prohibit copy construction.
This commit is contained in:
Theophile Ranquet
2012-12-21 16:48:54 +01:00
parent e7b26e942d
commit bb1f0f5226
1 changed files with 13 additions and 7 deletions
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20
data/variant.hh
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@@ -106,8 +106,8 @@ m4_define([b4_variant_define],
inline T&
build ()
{]b4_parse_assert_if([
YYASSERT (!built);
YYASSERT (!tname);
//YYASSERT (!built);
//YYASSERT (!tname);
YYASSERT (sizeof (T) <= S);
built = true;
tname = typeid (T).name ();])[
@@ -119,8 +119,8 @@ m4_define([b4_variant_define],
inline T&
build (const T& t)
{]b4_parse_assert_if([
YYASSERT (!built);
YYASSERT (!tname);
//YYASSERT (!built);
//YYASSERT (!tname);
YYASSERT (sizeof (T) <= S);
built = true;
tname = typeid (T).name ();])[
@@ -161,14 +161,15 @@ m4_define([b4_variant_define],
}
/// Swap the content with \a other, of same type.
/// Both variants must be built beforehand.
template <typename T>
inline void
swap (variant<S>& other)
{]b4_parse_assert_if([
YYASSERT (built);
YYASSERT (other.built);
YYASSERT (tname == other.tname);])[
std::swap (as<T>(), other.as<T>());]b4_parse_assert_if([
std::swap (built, other.built);
std::swap (tname, other.tname);])[
std::swap (as<T>(), other.as<T>());
}
/// Assign the content of \a other to this.
@@ -208,6 +209,11 @@ m4_define([b4_variant_define],
abort ();
}
variant (const self_type&)
{
abort ();
}
private:
/// A buffer large enough to store any of the semantic values.
/// Long double is chosen as it has the strongest alignment