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yacc.c: introduce yysymbol_name

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Provide the users with a public API to get the name of the tokens.  A
thin wrapper around yytname.

* data/skeletons/yacc.c (yysymbol_name): New.
Use it.
This commit is contained in:
Akim Demaille
2020-01-11 11:43:13 +01:00
parent 98a1045bea
commit 46cce832fd
1 changed files with 11 additions and 2 deletions
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13
data/skeletons/yacc.c
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@@ -609,6 +609,15 @@ static const char *const yytname[] =
{ {
]b4_tname[ ]b4_tname[
}; };
/* The user-facing name of the symbol whose (internal) number is
YYSYMBOL. No bounds checking. */
static const char *yysymbol_name (int yysymbol) YY_ATTRIBUTE_UNUSED;
static const char *
yysymbol_name (int yysymbol)
{
return yytname[yysymbol];
}
#endif #endif
# ifdef YYPRINT # ifdef YYPRINT
@@ -885,7 +894,7 @@ do { \
{ \ { \
YYDPRINTF ((stderr, \ YYDPRINTF ((stderr, \
"LAC: initial context established for %s\n", \ "LAC: initial context established for %s\n", \
yytname[yytoken])); \ yysymbol_name(yytoken))); \
yy_lac_established = 1; \ yy_lac_established = 1; \
{ \ { \
int yy_lac_status = \ int yy_lac_status = \
@@ -937,7 +946,7 @@ yy_lac (yy_state_t *yyesa, yy_state_t **yyes,
{ {
yy_state_t *yyes_prev = yyssp; yy_state_t *yyes_prev = yyssp;
yy_state_t *yyesp = yyes_prev; yy_state_t *yyesp = yyes_prev;
YYDPRINTF ((stderr, "LAC: checking lookahead %s:", yytname[yytoken])); YYDPRINTF ((stderr, "LAC: checking lookahead %s:", yysymbol_name(yytoken)));
if (yytoken == YYUNDEFTOK) if (yytoken == YYUNDEFTOK)
{ {
YYDPRINTF ((stderr, " Always Err\n")); YYDPRINTF ((stderr, " Always Err\n"));