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c++: use YY_NOEXCEPT where it helps

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Suggested by Don Macpherson.
<https://github.com/akimd/bison/issues/80>

* data/skeletons/c++.m4, data/skeletons/glr2.cc,
* data/skeletons/lalr1.cc, data/skeletons/stack.hh: Use YY_NOEXCEPT
where it helps constructors.
This commit is contained in:
Akim Demaille
2021-09-18 08:02:41 +02:00
parent dd6e78360a
commit 3fc3ef658e
4 changed files with 28 additions and 28 deletions
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32
data/skeletons/c++.m4
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@@ -308,7 +308,7 @@ m4_define([b4_symbol_type_define],
typedef Base super_type;
/// Default constructor.
basic_symbol ()
basic_symbol () YY_NOEXCEPT
: value ()]b4_locations_if([
, location ()])[
{}
@@ -437,16 +437,22 @@ m4_define([b4_symbol_type_define],
/// Type access provider for token (enum) based symbols.
struct by_kind
{
/// The symbol kind as needed by the constructor.
typedef token_kind_type kind_type;
/// Default constructor.
by_kind ();
by_kind () YY_NOEXCEPT;
#if 201103L <= YY_CPLUSPLUS
/// Move constructor.
by_kind (by_kind&& that);
by_kind (by_kind&& that) YY_NOEXCEPT;
#endif
/// Copy constructor.
by_kind (const by_kind& that);
by_kind (const by_kind& that) YY_NOEXCEPT;
/// Constructor from (external) token numbers.
by_kind (kind_type t) YY_NOEXCEPT;
]b4_glr2_cc_if([[
/// Copy assignment.
@@ -456,12 +462,6 @@ m4_define([b4_symbol_type_define],
by_kind& operator= (by_kind&& that);
]])[
/// The symbol kind as needed by the constructor.
typedef token_kind_type kind_type;
/// Constructor from (external) token numbers.
by_kind (kind_type t);
/// Record that this symbol is empty.
void clear () YY_NOEXCEPT;
@@ -490,7 +490,7 @@ m4_define([b4_symbol_type_define],
typedef basic_symbol<by_kind> super_type;
/// Empty symbol.
symbol_type () {}
symbol_type () YY_NOEXCEPT {}
/// Constructor for valueless symbols, and symbols from each type.
]b4_type_foreach([_b4_symbol_constructor_define])dnl
@@ -564,23 +564,23 @@ m4_define([b4_public_types_define],
}
// by_kind.
]b4_inline([$1])b4_parser_class[::by_kind::by_kind ()
]b4_inline([$1])b4_parser_class[::by_kind::by_kind () YY_NOEXCEPT
: kind_ (]b4_symbol(empty, kind)[)
{}
#if 201103L <= YY_CPLUSPLUS
]b4_inline([$1])b4_parser_class[::by_kind::by_kind (by_kind&& that)
]b4_inline([$1])b4_parser_class[::by_kind::by_kind (by_kind&& that) YY_NOEXCEPT
: kind_ (that.kind_)
{
that.clear ();
}
#endif
]b4_inline([$1])b4_parser_class[::by_kind::by_kind (const by_kind& that)
]b4_inline([$1])b4_parser_class[::by_kind::by_kind (const by_kind& that) YY_NOEXCEPT
: kind_ (that.kind_)
{}
]b4_inline([$1])b4_parser_class[::by_kind::by_kind (token_kind_type t)
]b4_inline([$1])b4_parser_class[::by_kind::by_kind (token_kind_type t) YY_NOEXCEPT
: kind_ (yytranslate_ (t))
{}
@@ -643,7 +643,7 @@ m4_define([b4_token_constructor_define], [])
# sometimes in the cc file.
m4_define([b4_yytranslate_define],
[ b4_inline([$1])b4_parser_class[::symbol_kind_type
]b4_parser_class[::yytranslate_ (int t)
]b4_parser_class[::yytranslate_ (int t) YY_NOEXCEPT
{
]b4_api_token_raw_if(
[[ return static_cast<symbol_kind_type> (t);]],