]> git.saurik.com Git - bison.git/blobdiff - src/symtab.c
maint: minor simplification
[bison.git] / src / symtab.c
index 273cdd6659e4781a38e7e896b78f7fe48912e559..b3f94560cec26701292f3770eba290c4fcc20be6 100644 (file)
@@ -1,6 +1,6 @@
 /* Symbol table manager for Bison.
 
-   Copyright (C) 1984, 1989, 2000-2002, 2004-2011 Free Software
+   Copyright (C) 1984, 1989, 2000-2002, 2004-2012 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
@@ -22,7 +22,6 @@
 #include "system.h"
 
 #include <hash.h>
-#include <quotearg.h>
 
 #include "complain.h"
 #include "gram.h"
@@ -68,7 +67,7 @@ symbol_new (uniqstr tag, location loc)
 
   /* If the tag is not a string (starts with a double quote), check
      that it is valid for Yacc. */
-  if (tag[0] != '\"' && tag[0] != '\'' && strchr (tag, '-'))
+  if (tag[0] != '\"' && tag[0] != '\'' && mbschr (tag, '-'))
     yacc_at (loc, _("POSIX Yacc forbids dashes in symbol names: %s"),
              tag);
 
@@ -90,7 +89,7 @@ symbol_new (uniqstr tag, location loc)
 
   if (nsyms == SYMBOL_NUMBER_MAXIMUM)
     fatal (_("too many symbols in input grammar (limit is %d)"),
-          SYMBOL_NUMBER_MAXIMUM);
+           SYMBOL_NUMBER_MAXIMUM);
   nsyms++;
   return res;
 }
@@ -117,8 +116,8 @@ semantic_type_new (uniqstr tag)
 | Print a symbol.  |
 `-----------------*/
 
-#define SYMBOL_ATTR_PRINT(Attr)                                \
-  if (s->Attr)                                         \
+#define SYMBOL_ATTR_PRINT(Attr)                         \
+  if (s->Attr)                                          \
     fprintf (f, " %s { %s }", #Attr, s->Attr)
 
 #define SYMBOL_CODE_PRINT(Attr)                         \
@@ -211,7 +210,7 @@ symbol_type_set (symbol *sym, uniqstr type_name, location loc)
   if (type_name)
     {
       if (sym->type_name)
-       symbol_redeclaration (sym, "%type", sym->type_location, loc);
+        symbol_redeclaration (sym, "%type", sym->type_location, loc);
       uniqstr_assert (type_name);
       sym->type_name = type_name;
       sym->type_location = loc;
@@ -340,7 +339,7 @@ symbol_precedence_set (symbol *sym, int prec, assoc a, location loc)
   if (a != undef_assoc)
     {
       if (sym->prec != 0)
-       symbol_redeclaration (sym, assoc_to_string (a), sym->prec_location,
+        symbol_redeclaration (sym, assoc_to_string (a), sym->prec_location,
                               loc);
       sym->prec = prec;
       sym->assoc = a;
@@ -375,7 +374,7 @@ symbol_class_set (symbol *sym, symbol_class class, location loc, bool declaring)
   if (declaring)
     {
       if (sym->declared)
-       warn_at (loc, _("symbol %s redeclared"), sym->tag);
+        warn_at (loc, _("symbol %s redeclared"), sym->tag);
       sym->declared = true;
     }
 }
@@ -403,10 +402,11 @@ symbol_user_token_number_set (symbol *sym, int user_token_number, location loc)
   if (user_token_number == 0)
     {
       endtoken = sym;
-      endtoken->number = 0;
       /* It is always mapped to 0, so it was already counted in
-        NTOKENS.  */
-      --ntokens;
+         NTOKENS.  */
+      if (endtoken->number != NUMBER_UNDEFINED)
+        --ntokens;
+      endtoken->number = 0;
     }
 }
 
@@ -422,9 +422,9 @@ symbol_check_defined (symbol *sym)
   if (sym->class == unknown_sym)
     {
       complain_at
-       (sym->location,
-        _("symbol %s is used, but is not defined as a token and has no rules"),
-        sym->tag);
+        (sym->location,
+         _("symbol %s is used, but is not defined as a token and has no rules"),
+         sym->tag);
       sym->class = nterm_sym;
       sym->number = nvars++;
     }
@@ -443,11 +443,11 @@ void
 symbol_make_alias (symbol *sym, symbol *str, location loc)
 {
   if (str->alias)
-    warn_at (loc, _("symbol `%s' used more than once as a literal string"),
-            str->tag);
+    warn_at (loc, _("symbol %s used more than once as a literal string"),
+             str->tag);
   else if (sym->alias)
-    warn_at (loc, _("symbol `%s' given more than one literal string"),
-            sym->tag);
+    warn_at (loc, _("symbol %s given more than one literal string"),
+             sym->tag);
   else
     {
       str->class = token_sym;
@@ -480,42 +480,42 @@ symbol_check_alias_consistency (symbol *this)
   if (str->type_name != sym->type_name)
     {
       if (str->type_name)
-       symbol_type_set (sym, str->type_name, str->type_location);
+        symbol_type_set (sym, str->type_name, str->type_location);
       else
-       symbol_type_set (str, sym->type_name, sym->type_location);
+        symbol_type_set (str, sym->type_name, sym->type_location);
     }
 
 
   if (str->destructor.code || sym->destructor.code)
     {
       if (str->destructor.code)
-       symbol_destructor_set (sym, &str->destructor);
+        symbol_destructor_set (sym, &str->destructor);
       else
-       symbol_destructor_set (str, &sym->destructor);
+        symbol_destructor_set (str, &sym->destructor);
     }
 
   if (str->printer.code || sym->printer.code)
     {
       if (str->printer.code)
-       symbol_printer_set (sym, &str->printer);
+        symbol_printer_set (sym, &str->printer);
       else
-       symbol_printer_set (str, &sym->printer);
+        symbol_printer_set (str, &sym->printer);
     }
 
   if (sym->prec || str->prec)
     {
       if (str->prec)
-       symbol_precedence_set (sym, str->prec, str->assoc,
-                              str->prec_location);
+        symbol_precedence_set (sym, str->prec, str->assoc,
+                               str->prec_location);
       else
-       symbol_precedence_set (str, sym->prec, sym->assoc,
-                              sym->prec_location);
+        symbol_precedence_set (str, sym->prec, sym->assoc,
+                               sym->prec_location);
     }
 }
 
 static bool
 symbol_check_alias_consistency_processor (void *this,
-                                         void *null ATTRIBUTE_UNUSED)
+                                          void *null ATTRIBUTE_UNUSED)
 {
   symbol_check_alias_consistency (this);
   return true;
@@ -581,7 +581,7 @@ symbol_translation (symbol *this)
     {
       /* A token which translation has already been set? */
       if (token_translations[this->user_token_number] != undeftoken->number)
-       user_token_number_redeclaration
+        user_token_number_redeclaration
           (this->user_token_number,
            symbols[token_translations[this->user_token_number]],
            this);
@@ -669,15 +669,15 @@ void
 symbols_new (void)
 {
   symbol_table = hash_initialize (HT_INITIAL_CAPACITY,
-                                 NULL,
-                                 hash_symbol_hasher,
-                                 hash_symbol_comparator,
-                                 free);
+                                  NULL,
+                                  hash_symbol_hasher,
+                                  hash_symbol_comparator,
+                                  free);
   semantic_type_table = hash_initialize (HT_INITIAL_CAPACITY,
-                                        NULL,
-                                        hash_semantic_type_hasher,
-                                        hash_semantic_type_comparator,
-                                        free);
+                                         NULL,
+                                         hash_semantic_type_hasher,
+                                         hash_semantic_type_comparator,
+                                         free);
 }
 
 
@@ -861,12 +861,12 @@ symbols_token_translations_init (void)
     {
       symbol *this = symbols[i];
       if (this->user_token_number != USER_NUMBER_UNDEFINED)
-       {
-         if (this->user_token_number > max_user_token_number)
-           max_user_token_number = this->user_token_number;
-         if (this->user_token_number == 256)
-           num_256_available_p = false;
-       }
+        {
+          if (this->user_token_number > max_user_token_number)
+            max_user_token_number = this->user_token_number;
+          if (this->user_token_number == 256)
+            num_256_available_p = false;
+        }
     }
 
   /* If 256 is not used, assign it to error, to follow POSIX.  */
@@ -882,13 +882,13 @@ symbols_token_translations_init (void)
     {
       symbol *this = symbols[i];
       if (this->user_token_number == USER_NUMBER_UNDEFINED)
-       this->user_token_number = ++max_user_token_number;
+        this->user_token_number = ++max_user_token_number;
       if (this->user_token_number > max_user_token_number)
-       max_user_token_number = this->user_token_number;
+        max_user_token_number = this->user_token_number;
     }
 
   token_translations = xnmalloc (max_user_token_number + 1,
-                                sizeof *token_translations);
+                                 sizeof *token_translations);
 
   /* Initialize all entries for literal tokens to the internal token
      number for $undefined, which represents all invalid inputs.  */
@@ -939,12 +939,12 @@ symbols_pack (void)
 
   if (startsymbol->class == unknown_sym)
     fatal_at (startsymbol_location,
-             _("the start symbol %s is undefined"),
-             startsymbol->tag);
+              _("the start symbol %s is undefined"),
+              startsymbol->tag);
   else if (startsymbol->class == token_sym)
     fatal_at (startsymbol_location,
-             _("the start symbol %s is a token"),
-             startsymbol->tag);
+              _("the start symbol %s is a token"),
+              startsymbol->tag);
 }
 
 
@@ -960,7 +960,7 @@ default_tagged_destructor_set (code_props const *destructor)
       complain_at (destructor->location,
                    _("redeclaration for default tagged %%destructor"));
       complain_at (default_tagged_destructor.location,
-                  _("previous declaration"));
+                   _("previous declaration"));
     }
   default_tagged_destructor = *destructor;
 }
@@ -973,7 +973,7 @@ default_tagless_destructor_set (code_props const *destructor)
       complain_at (destructor->location,
                    _("redeclaration for default tagless %%destructor"));
       complain_at (default_tagless_destructor.location,
-                  _("previous declaration"));
+                   _("previous declaration"));
     }
   default_tagless_destructor = *destructor;
 }
@@ -986,7 +986,7 @@ default_tagged_printer_set (code_props const *printer)
       complain_at (printer->location,
                    _("redeclaration for default tagged %%printer"));
       complain_at (default_tagged_printer.location,
-                  _("previous declaration"));
+                   _("previous declaration"));
     }
   default_tagged_printer = *printer;
 }
@@ -999,7 +999,7 @@ default_tagless_printer_set (code_props const *printer)
       complain_at (printer->location,
                    _("redeclaration for default tagless %%printer"));
       complain_at (default_tagless_printer.location,
-                  _("previous declaration"));
+                   _("previous declaration"));
     }
   default_tagless_printer = *printer;
 }