X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/34136e65fc7bd6babcfedcbfcfdca3b9feb10f1d..70b7c357476ed3525ddb5d2739e70690cfebb207:/src/parse-gram.y?ds=sidebyside

diff --git a/src/parse-gram.y b/src/parse-gram.y
index 19c2f5b0..0452c116 100644
--- a/src/parse-gram.y
+++ b/src/parse-gram.y
@@ -1,6 +1,6 @@
 %{/* Bison Grammar Parser                             -*- C -*-
 
-   Copyright (C) 2002-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002-2013 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -20,6 +20,7 @@
 #include <config.h>
 #include "system.h"
 
+#include "c-ctype.h"
 #include "complain.h"
 #include "conflicts.h"
 #include "files.h"
@@ -30,8 +31,10 @@
 #include "quotearg.h"
 #include "reader.h"
 #include "symlist.h"
+#include "symtab.h"
 #include "scan-gram.h"
 #include "scan-code.h"
+#include "xmemdup0.h"
 
 #define YYLLOC_DEFAULT(Current, Rhs, N)  (Current) = lloc_default (Rhs, N)
 static YYLTYPE lloc_default (YYLTYPE const *, int);
@@ -84,15 +87,15 @@ static char const *char_name (char);
   #define YYTYPE_UINT8 uint_fast8_t
 }
 
-%debug
-%verbose
-%defines
-%locations
-%pure-parser
-%define parse.error "verbose"
+%define api.prefix "gram_"
+%define api.pure
+%define locations
+%define parse.error verbose
 %define parse.lac full
-%name-prefix="gram_"
+%define parse.trace
+%defines
 %expect 0
+%verbose
 
 %initial-action
 {
@@ -184,30 +187,30 @@ static char const *char_name (char);
 %token TAG_NONE        "<>"
 
 %type <character> CHAR
-%printer { fputs (char_name ($$), stderr); } CHAR
+%printer { fputs (char_name ($$), yyo); } CHAR
 
 /* braceless is not to be used for rule or symbol actions, as it
    calls code_props_plain_init.  */
 %type <chars> STRING "%{...%}" EPILOGUE braceless content.opt
 %type <code> "{...}" "%?{...}"
-%printer { fputs (quotearg_style (c_quoting_style, $$), stderr); }
+%printer { fputs (quotearg_style (c_quoting_style, $$), yyo); }
          STRING
-%printer { fprintf (stderr, "{\n%s\n}", $$); }
+%printer { fprintf (yyo, "{\n%s\n}", $$); }
          braceless content.opt "{...}" "%{...%}" EPILOGUE
 
-%type <uniqstr> BRACKETED_ID ID ID_COLON PERCENT_FLAG TAG variable
-%printer { fputs ($$, stderr); } <uniqstr>
-%printer { fprintf (stderr, "[%s]", $$); } BRACKETED_ID
-%printer { fprintf (stderr, "%s:", $$); } ID_COLON
-%printer { fprintf (stderr, "%%%s", $$); } PERCENT_FLAG
-%printer { fprintf (stderr, "<%s>", $$); } TAG
+%type <uniqstr> BRACKETED_ID ID ID_COLON PERCENT_FLAG TAG tag variable
+%printer { fputs ($$, yyo); } <uniqstr>
+%printer { fprintf (yyo, "[%s]", $$); } BRACKETED_ID
+%printer { fprintf (yyo, "%s:", $$); } ID_COLON
+%printer { fprintf (yyo, "%%%s", $$); } PERCENT_FLAG
+%printer { fprintf (yyo, "<%s>", $$); } TAG tag
 
 %type <integer> INT
-%printer { fprintf (stderr, "%d", $$); } <integer>
+%printer { fprintf (yyo, "%d", $$); } <integer>
 
 %type <symbol> id id_colon string_as_id symbol symbol.prec
-%printer { fprintf (stderr, "%s", $$->tag); } <symbol>
-%printer { fprintf (stderr, "%s:", $$->tag); } id_colon
+%printer { fprintf (yyo, "%s", $$->tag); } <symbol>
+%printer { fprintf (yyo, "%s:", $$->tag); } id_colon
 
 %type <assoc> precedence_declarator
 %type <list>  symbols.1 symbols.prec generic_symlist generic_symlist_item
@@ -314,7 +317,6 @@ prologue_declaration:
 | "%expect" INT                    { expected_sr_conflicts = $2; }
 | "%expect-rr" INT                 { expected_rr_conflicts = $2; }
 | "%file-prefix" STRING            { spec_file_prefix = $2; }
-| "%file-prefix" "=" STRING        { spec_file_prefix = $3; } /* deprecated */
 | "%glr-parser"
     {
       nondeterministic_parser = true;
@@ -331,17 +333,15 @@ prologue_declaration:
     }
 | "%language" STRING            { language_argmatch ($2, grammar_prio, @1); }
 | "%name-prefix" STRING         { spec_name_prefix = $2; }
-| "%name-prefix" "=" STRING     { spec_name_prefix = $3; } /* deprecated */
 | "%no-lines"                   { no_lines_flag = true; }
 | "%nondeterministic-parser"    { nondeterministic_parser = true; }
 | "%output" STRING              { spec_outfile = $2; }
-| "%output" "=" STRING          { spec_outfile = $3; }  /* deprecated */
 | "%param" { current_param = $1; } params { current_param = param_none; }
 | "%require" STRING             { version_check (&@2, $2); }
 | "%skeleton" STRING
     {
       char const *skeleton_user = $2;
-      if (mbschr (skeleton_user, '/'))
+      if (strchr (skeleton_user, '/'))
         {
           size_t dir_length = strlen (current_file);
           char *skeleton_build;
@@ -353,7 +353,7 @@ prologue_declaration:
             xmalloc (dir_length + 1 + strlen (skeleton_user) + 1);
           if (dir_length > 0)
             {
-              strncpy (skeleton_build, current_file, dir_length);
+              memcpy (skeleton_build, current_file, dir_length);
               skeleton_build[dir_length++] = '/';
             }
           strcpy (skeleton_build + dir_length, skeleton_user);
@@ -385,19 +385,17 @@ grammar_declaration:
     {
       grammar_start_symbol_set ($2, @2);
     }
-| "%destructor" "{...}" generic_symlist
+| code_props_type "{...}" generic_symlist
     {
-      symbol_list *list;
-      for (list = $3; list; list = list->next)
-        symbol_list_destructor_set (list, $2, @2);
-      symbol_list_free ($3);
-    }
-| "%printer" "{...}" generic_symlist
-    {
-      symbol_list *list;
-      for (list = $3; list; list = list->next)
-        symbol_list_printer_set (list, $2, @2);
-      symbol_list_free ($3);
+      code_props code;
+      code_props_symbol_action_init (&code, $2, @2);
+      code_props_translate_code (&code);
+      {
+        symbol_list *list;
+        for (list = $3; list; list = list->next)
+          symbol_list_code_props_set (list, $1, &code);
+        symbol_list_free ($3);
+      }
     }
 | "%default-prec"
     {
@@ -421,6 +419,13 @@ grammar_declaration:
     }
 ;
 
+%type <code_type> code_props_type;
+%union {code_props_type code_type;};
+%printer { fprintf (yyo, "%s", code_props_type_string ($$)); } <code_type>;
+code_props_type:
+  "%destructor"  { $$ = destructor; }
+| "%printer"     { $$ = printer; }
+;
 
 /*---------.
 | %union.  |
@@ -502,9 +507,9 @@ symbols.prec:
 ;
 
 symbol.prec:
-    symbol { $$ = $1; }
-  | symbol INT { $$ = $1; symbol_user_token_number_set ($1, $2, @2); }
-  ;
+  symbol     { $$ = $1; }
+| symbol INT { $$ = $1; symbol_user_token_number_set ($1, $2, @2); }
+;
 
 /* One or more symbols to be %typed. */
 symbols.1:
@@ -521,9 +526,13 @@ generic_symlist:
 
 generic_symlist_item:
   symbol    { $$ = symbol_list_sym_new ($1, @1); }
-| TAG       { $$ = symbol_list_type_new ($1, @1); }
-| "<*>"     { $$ = symbol_list_default_tagged_new (@1); }
-| "<>"      { $$ = symbol_list_default_tagless_new (@1); }
+| tag       { $$ = symbol_list_type_new ($1, @1); }
+;
+
+tag:
+  TAG
+| "<*>" { $$ = uniqstr_new ("*"); }
+| "<>"  { $$ = uniqstr_new (""); }
 ;
 
 /* One token definition.  */
@@ -608,7 +617,7 @@ rhs:
     { grammar_current_rule_symbol_append ($2, @2, $3); }
 | rhs "{...}" named_ref.opt
     { grammar_current_rule_action_append ($2, @2, $3, false); }
-| rhs "%?{...}" 
+| rhs "%?{...}"
     { grammar_current_rule_action_append ($2, @2, NULL, true); }
 | rhs "%prec" symbol
     { grammar_current_rule_prec_set ($3, @3); }
@@ -712,7 +721,6 @@ epilogue.opt:
 
 %%
 
-
 /* Return the location of the left-hand side of a rule whose
    right-hand side is RHS[1] ... RHS[N].  Ignore empty nonterminals in
    the right-hand side, and return an empty location equal to the end
@@ -729,7 +737,7 @@ lloc_default (YYLTYPE const *rhs, int n)
   loc.start = rhs[n].end;
   loc.end = rhs[n].end;
 
-  /* Ignore empty nonterminals the start of the the right-hand side.
+  /* Ignore empty nonterminals the start of the right-hand side.
      Do not bother to ignore them at the end of the right-hand side,
      since empty nonterminals have the same end as their predecessors.  */
   for (i = 1; i <= n; i++)
@@ -764,28 +772,20 @@ add_param (param_type type, char *decl, location loc)
 
     /* Strip the surrounding '{' and '}', and any blanks just inside
        the braces.  */
-    while (*--p == ' ' || *p == '\t')
-      continue;
+    --p;
+  while (c_isspace ((unsigned char) *p))
+      --p;
     p[1] = '\0';
-    while (*++decl == ' ' || *decl == '\t')
-      continue;
+    ++decl;
+  while (c_isspace ((unsigned char) *decl))
+      ++decl;
   }
 
   if (! name_start)
-    complain_at (loc, _("missing identifier in parameter declaration"));
+    complain (&loc, complaint, _("missing identifier in parameter declaration"));
   else
     {
-      char *name;
-      size_t name_len;
-
-      for (name_len = 1;
-           memchr (alphanum, name_start[name_len], sizeof alphanum);
-           name_len++)
-        continue;
-
-      name = xmalloc (name_len + 1);
-      memcpy (name, name_start, name_len);
-      name[name_len] = '\0';
+      char *name = xmemdup0 (name_start, strspn (name_start, alphanum));
       if (type & param_lex)
         muscle_pair_list_grow ("lex_param", decl, name);
       if (type & param_parse)
@@ -802,16 +802,16 @@ version_check (location const *loc, char const *version)
 {
   if (strverscmp (version, PACKAGE_VERSION) > 0)
     {
-      complain_at (*loc, "require bison %s, but have %s",
-                   version, PACKAGE_VERSION);
-      exit (63);
+      complain (loc, complaint, "require bison %s, but have %s",
+                version, PACKAGE_VERSION);
+      exit (EX_MISMATCH);
     }
 }
 
 static void
 gram_error (location const *loc, char const *msg)
 {
-  complain_at (*loc, "%s", msg);
+  complain (loc, complaint, "%s", msg);
 }
 
 char const *