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symbols: stop dealing with YYEMPTY as b4_symbol(-2, ...)

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* data/skeletons/bison.m4 (b4_symbol): Redirect `b4_symbol(empty,
...)` to `b4_symbol(-2, ...)`.
Change all uses of the latter to the former.
This commit is contained in:
Akim Demaille
2020-09-29 06:27:31 +02:00
parent a7daa63cb7
commit cd40ec9526
9 changed files with 77 additions and 75 deletions
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8
data/skeletons/lalr1.cc
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@@ -408,7 +408,7 @@ m4_define([b4_shared_declarations],
void move (by_state& that);
/// The symbol kind (corresponding to \a state).
/// \a ]b4_symbol(-2, kind)[ when empty.
/// \a ]b4_symbol(empty, kind)[ when empty.
symbol_kind_type kind () const YY_NOEXCEPT;
/// The state number used to denote an empty symbol.
@@ -665,7 +665,7 @@ m4_if(b4_prefix, [yy], [],
]b4_parser_class[::by_state::kind () const YY_NOEXCEPT
{
if (state == empty_state)
return ]b4_symbol(-2, kind)[;
return ]b4_symbol(empty, kind)[;
else
return YY_CAST (symbol_kind_type, yystos_[+state]);
}
@@ -690,7 +690,7 @@ m4_if(b4_prefix, [yy], [],
b4_symbol_variant([that.kind ()],
[value], [move], [YY_MOVE (that.value)])])[
// that is emptied.
that.kind_ = ]b4_symbol(-2, kind)[;
that.kind_ = ]b4_symbol(empty, kind)[;
}
#if YY_CPLUSPLUS < 201103L
@@ -1333,7 +1333,7 @@ b4_dollar_popdef])[]dnl
}
]])[
if (yyarg && yycount == 0 && 0 < yyargn)
yyarg[0] = ]b4_symbol(-2, kind)[;
yyarg[0] = ]b4_symbol(empty, kind)[;
return yycount;
}