skeletons: simplify the handling of default api.location.type

[bison.git] / src / symlist.c

diff --git a/src/symlist.c b/src/symlist.c
index 662f1f7bc1ffa4a9cd5448b12a12ff3eb93b39c9..300eeda87f68ed536a63be824803df5d7d6c2a7c 100644 (file)
--- a/src/symlist.c
+++ b/src/symlist.c
@@ -1,82 +1,128 @@
 /* Lists of symbols for Bison
 
 /* Lists of symbols for Bison
 

-   Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2007, 2009-2012 Free Software Foundation,
+   Inc.

 
    This file is part of Bison, the GNU Compiler Compiler.
 
 
    This file is part of Bison, the GNU Compiler Compiler.
 

-   Bison is free software; you can redistribute it and/or modify
+   This program is free software: you can redistribute it and/or modify

    it under the terms of the GNU General Public License as published by
    it under the terms of the GNU General Public License as published by

-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.

 
 

-   Bison is distributed in the hope that it will be useful,
+   This program is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License

-   along with Bison; see the file COPYING.  If not, write to
-   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 

+#include <config.h>

 #include "system.h"
 
 #include "complain.h"
 #include "symlist.h"
 
 #include "system.h"
 
 #include "complain.h"
 #include "symlist.h"
 

-

 /*--------------------------------------.
 | Create a list containing SYM at LOC.  |
 `--------------------------------------*/
 
 symbol_list *
 /*--------------------------------------.
 | Create a list containing SYM at LOC.  |
 `--------------------------------------*/
 
 symbol_list *

-symbol_list_new (symbol *sym, location loc)
+symbol_list_sym_new (symbol *sym, location loc)

 {
   symbol_list *res = xmalloc (sizeof *res);
 {
   symbol_list *res = xmalloc (sizeof *res);

-  res->next = NULL;
-  res->sym = sym;
-  res->location = loc;
-  res->action = NULL;
+
+  res->content_type = SYMLIST_SYMBOL;
+  res->content.sym = sym;
+  res->location = res->sym_loc = loc;
+
+  res->midrule = NULL;
+  res->midrule_parent_rule = NULL;
+  res->midrule_parent_rhs_index = 0;
+
+  code_props_none_init (&res->action_props);
+

   res->ruleprec = NULL;
   res->dprec = 0;
   res->merger = 0;
   res->ruleprec = NULL;
   res->dprec = 0;
   res->merger = 0;

+
+  res->named_ref = NULL;
+
+  res->next = NULL;
+

   return res;
 }
 
 
   return res;
 }
 
 

-/*------------------.
-| Print this list.  |
-`------------------*/
+/*--------------------------------------------.
+| Create a list containing TYPE_NAME at LOC.  |
+`--------------------------------------------*/
+
+symbol_list *
+symbol_list_type_new (uniqstr type_name, location loc)
+{
+  symbol_list *res = xmalloc (sizeof *res);
+
+  res->content_type = SYMLIST_TYPE;
+  res->content.sem_type = xmalloc (sizeof (semantic_type));
+  res->content.sem_type->tag = type_name;
+  res->content.sem_type->location = loc;
+  res->content.sem_type->status = undeclared;
+
+  res->location = res->sym_loc = loc;
+  res->named_ref = NULL;
+  res->next = NULL;
+
+  return res;
+}
+
+
+/*-----------------------------------------------------------------------.
+| Print this list, for which every content_type must be SYMLIST_SYMBOL.  |
+`-----------------------------------------------------------------------*/

 
 void
 
 void

-symbol_list_print (FILE *f, symbol_list *l)
+symbol_list_syms_print (const symbol_list *l, FILE *f)

 {
 {

-  for (/* Nothing. */; l; l = l->next)
-    symbol_print (f, l->sym);
+  for (/* Nothing. */; l && l->content.sym; l = l->next)
+    {
+      symbol_print (l->content.sym, f);
+      fprintf (stderr, l->action_props.is_value_used ? " used" : " unused");
+      if (l && l->content.sym)
+        fprintf (f, ", ");
+    }

 }
 
 
 }
 
 

-/*---------------------------------.
-| Prepend SYM at LOC to the LIST.  |
-`---------------------------------*/
+/*---------------------------.
+| Prepend NODE to the LIST.  |
+`---------------------------*/

 
 symbol_list *
 
 symbol_list *

-symbol_list_prepend (symbol_list *list, symbol *sym, location loc)
+symbol_list_prepend (symbol_list *list, symbol_list *node)

 {
 {

-  symbol_list *res = symbol_list_new (sym, loc);
-  res->next = list;
-  return res;
+  node->next = list;
+  return node;

 }
 
 
 }
 
 

-/*-------------------------------------------------.
-| Free the LIST, but not the symbols it contains.  |
-`-------------------------------------------------*/
+/*-----------------------------------------------.
+| Free the LIST, but not the items it contains.  |
+`-----------------------------------------------*/

 
 void
 symbol_list_free (symbol_list *list)
 {
 
 void
 symbol_list_free (symbol_list *list)
 {

-  LIST_FREE (symbol_list, list);
+  symbol_list *node, *next;
+  for (node = list; node; node = next)
+    {
+      next = node->next;
+      named_ref_free (node->named_ref);
+      if (node->content_type == SYMLIST_TYPE)
+        free (node->content.sem_type);
+      free (node);
+    }

 }
 
 
 }
 
 


@@ -84,44 +130,85 @@ symbol_list_free (symbol_list *list)
 | Return its length.  |
 `--------------------*/
 
 | Return its length.  |
 `--------------------*/
 

-unsigned int
-symbol_list_length (symbol_list *list)
+int
+symbol_list_length (symbol_list const *l)

 {
   int res = 0;
 {
   int res = 0;

-  for (/* Nothing. */; list; list = list->next)
+  for (/* Nothing. */;
+       l && !(l->content_type == SYMLIST_SYMBOL && l->content.sym == NULL);
+       l = l->next)

     ++res;
   return res;
 }
 
 
     ++res;
   return res;
 }
 
 

+/*------------------------------.
+| Get item N in symbol list L.  |
+`------------------------------*/
+
+symbol_list *
+symbol_list_n_get (symbol_list *l, int n)
+{
+  int i;
+
+  if (n < 0)
+    return NULL;
+
+  for (i = 0; i < n; ++i)
+    {
+      l = l->next;
+      if (l == NULL
+          || (l->content_type == SYMLIST_SYMBOL && l->content.sym == NULL))
+        return NULL;
+    }
+
+  return l;
+}
+
+

 /*--------------------------------------------------------------.
 | Get the data type (alternative in the union) of the value for |
 /*--------------------------------------------------------------.
 | Get the data type (alternative in the union) of the value for |

-| symbol N in symbol list RP.                                   |
+| symbol N in symbol list L.                                    |

 `--------------------------------------------------------------*/
 
 uniqstr
 `--------------------------------------------------------------*/
 
 uniqstr

-symbol_list_n_type_name_get (symbol_list *rp, location loc, int n)
+symbol_list_n_type_name_get (symbol_list *l, location loc, int n)

 {
 {

-  int i;
-
-  if (n < 0)
+  l = symbol_list_n_get (l, n);
+  if (!l)

     {
     {

-      complain_at (loc, _("invalid $ value: $%d"), n);
+      complain (&loc, complaint, _("invalid $ value: $%d"), n);

       return NULL;
     }
       return NULL;
     }

+  aver (l->content_type == SYMLIST_SYMBOL);
+  return l->content.sym->type_name;
+}

 
 

-  i = 0;
+bool
+symbol_list_null (symbol_list *node)
+{
+  return !node ||
+    (node->content_type == SYMLIST_SYMBOL && !(node->content.sym));
+}

 
 

-  while (i < n)
+void
+symbol_list_code_props_set (symbol_list *node, code_props_type kind,
+                            code_props const *cprops)
+{
+  switch (node->content_type)

     {
     {

-      rp = rp->next;
-      if (rp == NULL || rp->sym == NULL)
-       {
-         complain_at (loc, _("invalid $ value: $%d"), n);
-         return NULL;
-       }
-      ++i;
+    case SYMLIST_SYMBOL:
+      symbol_code_props_set (node->content.sym, kind, cprops);
+      if (node->content.sym->status == undeclared)
+        node->content.sym->status = used;
+      break;
+    case SYMLIST_TYPE:
+      semantic_type_code_props_set
+        (semantic_type_get (node->content.sem_type->tag,
+                            &node->content.sem_type->location),
+         kind, cprops);
+      if (node->content.sem_type->status == undeclared)
+        node->content.sem_type->status = used;
+      break;

     }
     }

-
-  return rp->sym->type_name;

 }
 }