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c++: factor the handling of __cplusplus into YY_CPLUSPLUS

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* data/c++.m4 (b4_cxx_portability): Define it.
Use it.
* data/lalr1.cc, data/variant.hh: Use it.
This commit is contained in:
Akim Demaille
2018-11-13 06:49:24 +01:00
parent a52723e3e8
commit 7adeb80765
4 changed files with 16 additions and 9 deletions
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6
data/variant.hh
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@@ -125,7 +125,7 @@ m4_define([b4_variant_define],
return *new (yyas_<T> ()) T ();
}
# if defined __cplusplus && 201103L <= __cplusplus
# if 201103L <= YY_CPLUSPLUS
/// Instantiate a \a T in here from \a t.
template <typename T, typename U>
T&
@@ -213,7 +213,7 @@ m4_define([b4_variant_define],
void
move (self_type& other)
{
# if defined __cplusplus && 201103L <= __cplusplus
# if 201103L <= YY_CPLUSPLUS
emplace<T> (std::move (other.as<T> ()));
# else
emplace<T> ();
@@ -222,7 +222,7 @@ m4_define([b4_variant_define],
other.destroy<T> ();
}
# if defined __cplusplus && 201103L <= __cplusplus
# if 201103L <= YY_CPLUSPLUS
/// Move the content of \a other to this.
template <typename T>
void