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skeletons: use symbol(-2, kind)

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Not all the symbols have a fixed symbol code.  UNDEF's one is fixed:
-2.

* data/skeletons/glr.c, data/skeletons/lalr1.cc, data/skeletons/lalr1.d,
* data/skeletons/yacc.c: here.
This commit is contained in:
Akim Demaille
2020-04-15 08:34:48 +02:00
parent c4c25e091c
commit caadfc552b
4 changed files with 12 additions and 12 deletions
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6
data/skeletons/lalr1.cc
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@@ -377,7 +377,7 @@ m4_define([b4_shared_declarations],
void move (by_state& that);
/// The symbol kind (corresponding to \a state).
/// \a ]b4_symbol_prefix[YYEMPTY when empty.
/// \a ]b4_symbol(-2, kind)[ when empty.
symbol_kind_type type_get () const YY_NOEXCEPT;
/// The state number used to denote an empty symbol.
@@ -700,7 +700,7 @@ b4_parse_error_case([verbose], [[
]b4_parser_class[::by_state::type_get () const YY_NOEXCEPT
{
if (state == empty_state)
return symbol_kind::]b4_symbol_prefix[YYEMPTY;
return symbol_kind::]b4_symbol(-2, kind)[;
else
return YY_CAST (symbol_kind_type, yystos_[+state]);
}
@@ -725,7 +725,7 @@ b4_parse_error_case([verbose], [[
b4_symbol_variant([that.type_get ()],
[value], [move], [YY_MOVE (that.value)])])[
// that is emptied.
that.type = symbol_kind::]b4_symbol_prefix[YYEMPTY;
that.type = symbol_kind::]b4_symbol(-2, kind)[;
}
#if YY_CPLUSPLUS < 201103L