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Create parser without defining %union #654

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Merged
merged 1 commit into from
Sep 1, 2025
Merged

Create parser without defining %union #654

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6 changes: 2 additions & 4 deletions lib/lrama/grammar/stdlib.y
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,8 @@

**********************************************************************/

%%

// -------------------------------------------------------------------
// Options

Expand Down Expand Up @@ -138,7 +140,3 @@
%rule separated_list(separator, X)
: option(separated_nonempty_list(separator, X))
;

%%

%union{};
8 changes: 8 additions & 0 deletions template/bison/_yacc.h
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Expand Up @@ -28,6 +28,7 @@ extern int yydebug;
<%-# b4_declare_yylstype -%>
<%-# b4_value_type_define -%>
/* Value type. */
<% if output.grammar.union %>
#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
union YYSTYPE
{
Expand All @@ -40,6 +41,13 @@ typedef union YYSTYPE YYSTYPE;
# define YYSTYPE_IS_TRIVIAL 1
# define YYSTYPE_IS_DECLARED 1
#endif
<% else %>
#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
typedef int YYSTYPE;
# define YYSTYPE_IS_TRIVIAL 1
# define YYSTYPE_IS_DECLARED 1
#endif
<% end %>

<%-# b4_location_type_define -%>
/* Location type. */
Expand Down