You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
-%option debug nodefault nounput noyywrap never-interactive
+%option debug nodefault noinput nounput noyywrap never-interactive
%option prefix="code_" outfile="lex.yy.c"
%{
static unsigned variant_count = 0;
static variant *
-variant_table_grow ()
+variant_table_grow (void)
{
++variant_count;
if (variant_count > variant_table_size)
return &variant_table[variant_count - 1];
}
+static void
+variant_table_free (void)
+{
+ free (variant_table);
+ variant_table = 0;
+ variant_table_size = variant_count = 0;
+}
+
static char *
find_prefix_end (const char *prefix, char *begin, char *end)
{
}
static variant *
-variant_add (uniqstr id, location loc, unsigned index,
+variant_add (uniqstr id, location id_loc, unsigned symbol_index,
char *cp, char *cp_end, bool exact_mode)
{
char *prefix_end;
(!exact_mode && is_dot_or_dash (*prefix_end))))
{
variant *r = variant_table_grow ();
- r->index = index;
+ r->index = symbol_index;
r->id = id;
- r->loc = loc;
+ r->loc = id_loc;
r->hidden_by = NULL;
r->err = 0;
return r;
}
static const char *
-get_at_spec(unsigned index)
+get_at_spec(unsigned symbol_index)
{
static char at_buf[20];
- if (index == 0)
+ if (symbol_index == 0)
strcpy (at_buf, "$$");
else
- snprintf (at_buf, sizeof at_buf, "$%u", index);
+ snprintf (at_buf, sizeof at_buf, "$%u", symbol_index);
return at_buf;
}
accesses. */
static long int
parse_ref (char *cp, symbol_list *rule, int rule_length,
- int midrule_rhs_index, char *text, location loc,
+ int midrule_rhs_index, char *text, location text_loc,
char dollar_or_at)
{
symbol_list *l;
return num;
else
{
- complain_at (loc, _("integer out of range: %s"), quote (text));
+ complain_at (text_loc, _("integer out of range: %s"),
+ quote (text));
return INVALID_REF;
}
}
/* Add all relevant variants. */
{
- unsigned index;
+ unsigned symbol_index;
variant_count = 0;
- for (index = 0, l = rule; !symbol_list_null (l); ++index, l = l->next)
+ for (symbol_index = 0, l = rule; !symbol_list_null (l);
+ ++symbol_index, l = l->next)
{
- variant *variant;
+ variant *var;
if (l->content_type != SYMLIST_SYMBOL)
continue;
- variant = variant_add (l->content.sym->tag, l->sym_loc, index,
- cp, cp_end, exact_mode);
-
- if (variant && l->named_ref)
- variant->hidden_by = l->named_ref;
+ var = variant_add (l->content.sym->tag, l->sym_loc,
+ symbol_index, cp, cp_end, exact_mode);
+ if (var && l->named_ref)
+ var->hidden_by = l->named_ref;
if (l->named_ref)
- variant_add (l->named_ref->id, l->named_ref->loc, index,
- cp, cp_end, exact_mode);
+ variant_add (l->named_ref->id, l->named_ref->loc,
+ symbol_index, cp, cp_end, exact_mode);
}
}
has_valid = false;
for (i = 0; i < variant_count; ++i)
{
- variant *variant = &variant_table[i];
- unsigned index = variant->index;
+ variant *var = &variant_table[i];
+ unsigned symbol_index = var->index;
/* Check visibility from mid-rule actions. */
if (midrule_rhs_index != 0
- && (index == 0 || midrule_rhs_index < index))
+ && (symbol_index == 0 || midrule_rhs_index < symbol_index))
{
- variant->err |= VARIANT_NOT_VISIBLE_FROM_MIDRULE;
+ var->err |= VARIANT_NOT_VISIBLE_FROM_MIDRULE;
has_error = true;
}
/* Check correct bracketing. */
- if (!exact_mode && contains_dot_or_dash (variant->id))
+ if (!exact_mode && contains_dot_or_dash (var->id))
{
- variant->err |= VARIANT_BAD_BRACKETING;
+ var->err |= VARIANT_BAD_BRACKETING;
has_error = true;
}
/* Check using of hidden symbols. */
- if (variant->hidden_by)
+ if (var->hidden_by)
{
- variant->err |= VARIANT_HIDDEN;
+ var->err |= VARIANT_HIDDEN;
has_error = true;
}
- if (!variant->err)
+ if (!var->err)
has_valid = true;
}
if (variant_count == 1 && has_valid)
{
/* The only "good" case is here. */
- unsigned index = variant_table[0].index;
- if (index == midrule_rhs_index)
+ unsigned symbol_index = variant_table[0].index;
+ if (symbol_index == midrule_rhs_index)
return LHS_REF;
else
- return index;
+ return symbol_index;
}
/* Start complaining. */
if (variant_count == 0)
- complain_at (loc, _("invalid reference: %s, symbol not found"),
+ complain_at (text_loc, _("invalid reference: %s, symbol not found"),
quote (text));
else if (variant_count > 1 && !has_error)
- complain_at (loc, _("ambiguous reference: %s"),
+ complain_at (text_loc, _("ambiguous reference: %s"),
quote (text));
else if (variant_count > 1 && has_valid && has_error)
- complain_at (loc, _("misleading reference: %s"),
+ complain_at (text_loc, _("misleading reference: %s"),
quote (text));
else
- complain_at (loc, _("invalid reference: %s"),
+ complain_at (text_loc, _("invalid reference: %s"),
quote (text));
for (i = 0; i < variant_count; ++i)
{
- const variant *variant = &variant_table[i];
- const char *at_spec = get_at_spec (variant->index);
+ const variant *var = &variant_table[i];
+ const char *at_spec = get_at_spec (var->index);
- if (variant->err == 0)
- complain_at (variant->loc, _(" refers to: %c%s at %s"),
- dollar_or_at, variant->id, at_spec);
+ if (var->err == 0)
+ complain_at (var->loc, _(" refers to: %c%s at %s"),
+ dollar_or_at, var->id, at_spec);
else
{
static struct obstack msg_buf;
const char *tail = exact_mode ? "" :
- cp + strlen (variant->id);
- const char *id = variant->hidden_by ? variant->hidden_by->id :
- variant->id;
- location loc = variant->hidden_by ? variant->hidden_by->loc :
- variant->loc;
+ cp + strlen (var->id);
+ const char *id = var->hidden_by ? var->hidden_by->id :
+ var->id;
+ location id_loc = var->hidden_by ? var->hidden_by->loc :
+ var->loc;
/* Create the explanation message. */
obstack_init (&msg_buf);
obstack_sgrow (&msg_buf, id);
obstack_sgrow (&msg_buf, tail);
- if (variant->err & VARIANT_HIDDEN)
+ if (var->err & VARIANT_HIDDEN)
{
obstack_fgrow1 (&msg_buf, ", hiding %c", dollar_or_at);
- if (contains_dot_or_dash (variant->id))
- obstack_fgrow1 (&msg_buf, "[%s]", variant->id);
+ if (contains_dot_or_dash (var->id))
+ obstack_fgrow1 (&msg_buf, "[%s]", var->id);
else
- obstack_sgrow (&msg_buf, variant->id);
+ obstack_sgrow (&msg_buf, var->id);
obstack_sgrow (&msg_buf, tail);
}
obstack_fgrow1 (&msg_buf, " at %s", at_spec);
- if (variant->err & VARIANT_NOT_VISIBLE_FROM_MIDRULE)
+ if (var->err & VARIANT_NOT_VISIBLE_FROM_MIDRULE)
obstack_fgrow1 (&msg_buf, ", cannot be accessed from "
"mid-rule action at $%d", midrule_rhs_index);
obstack_1grow (&msg_buf, '\0');
- complain_at (loc, _("%s"), (char *) obstack_finish (&msg_buf));
+ complain_at (id_loc, _("%s"), (char *) obstack_finish (&msg_buf));
obstack_free (&msg_buf, 0);
}
}
void
code_props_rule_action_init (code_props *self, char const *code,
location code_loc, symbol_list *rule,
- named_ref *named_ref)
+ named_ref *name)
{
self->kind = CODE_PROPS_RULE_ACTION;
self->code = code;
self->location = code_loc;
self->is_value_used = false;
self->rule = rule;
- self->named_ref = named_ref;
+ self->named_ref = name;
}
void
code_scanner_free (void)
{
obstack_free (&obstack_for_string, 0);
+ variant_table_free ();
+
/* Reclaim Flex's buffers. */
yylex_destroy ();
}
projects / bison.git / blobdiff