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c++: don't obfuscate std::move when not needed

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* data/lalr1.cc, data/variant.hh: Avoid macros that depend on the
version of C++ when not needed.
This commit is contained in:
Akim Demaille
2018-10-20 09:09:45 +02:00
parent d2192653db
commit ace93397c1
2 changed files with 9 additions and 8 deletions
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13
data/lalr1.cc
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@@ -333,7 +333,8 @@ m4_define([b4_shared_declarations],
stack_symbol_type (state_type s, YY_MOVE_REF (symbol_type) sym);
#if defined __cplusplus && __cplusplus < 201103L
/// Assignment, needed by push_back by some old implementations.
stack_symbol_type& operator= (YY_MOVE_REF (stack_symbol_type) that);
/// Moves the contents of that.
stack_symbol_type& operator= (stack_symbol_type& that);
#endif
};
@@ -619,13 +620,13 @@ m4_if(b4_prefix, [yy], [],
#if defined __cplusplus && __cplusplus < 201103L
]b4_parser_class_name[::stack_symbol_type&
]b4_parser_class_name[::stack_symbol_type::operator= (YY_MOVE_REF (stack_symbol_type) that)
]b4_parser_class_name[::stack_symbol_type::operator= (stack_symbol_type& that)
{
state = that.state;
]b4_variant_if([b4_symbol_variant([that.type_get ()],
[value], [move], [YY_MOVE (that.value)])],
[[value = YY_MOVE (that.value);]])[]b4_locations_if([
location = YY_MOVE (that.location);])[
[value], [move], [that.value])],
[[value = that.value;]])[]b4_locations_if([
location = that.location;])[
// that is emptied.
that.state = empty_state;
return *this;
@@ -676,7 +677,7 @@ m4_if(b4_prefix, [yy], [],
]b4_parser_class_name[::yypush_ (const char* m, state_type s, YY_MOVE_REF (symbol_type) sym)
{
#if defined __cplusplus && 201103L <= __cplusplus
yypush_ (m, stack_symbol_type (s, YY_MOVE (sym)));
yypush_ (m, stack_symbol_type (s, std::move (sym)));
#else
stack_symbol_type ss (s, sym);
yypush_ (m, ss);

4
data/variant.hh
View File

@@ -184,7 +184,7 @@ m4_define([b4_variant_define],
{
build<T> ();
# if defined __cplusplus && 201103L <= __cplusplus
as<T> () = YY_MOVE (other.as<T> ());
as<T> () = std::move (other.as<T> ());
# else
swap<T> (other);
# endif
@@ -198,7 +198,7 @@ m4_define([b4_variant_define],
move (self_type&& other)
{
build<T> ();
as<T> () = YY_MOVE (other.as<T> ());
as<T> () = std::move (other.as<T> ());
other.destroy<T> ();
}
#endif