2011-02-21 Hui Zhu <teawater@gmail.com>
[deliverable/binutils-gdb.git] / gdb / objc-exp.y
index e8648795287b71f4568ab6570f6f7d6956a6b401..3322874f221fd99a46b6fe43de2f1cf87929a9dc 100644 (file)
@@ -1,11 +1,11 @@
 /* YACC parser for C expressions, for GDB.
 
-   Copyright (C) 1986, 1989, 1990, 1991, 1993, 1994, 2002, 2006, 2007, 2008
-   Free Software Foundation, Inc.
+   Copyright (C) 1986, 1989, 1990, 1991, 1993, 1994, 2002, 2006, 2007, 2008,
+   2009, 2010, 2011 Free Software Foundation, Inc.
 
    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
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -14,9 +14,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; 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/>.  */
 
 /* Parse a C expression from text in a string, and return the result
    as a struct expression pointer.  That structure contains arithmetic
@@ -54,6 +52,8 @@
 #include "completer.h" /* For skip_quoted().  */
 #include "block.h"
 
+#define parse_type builtin_type (parse_gdbarch)
+
 /* Remap normal yacc parser interface names (yyparse, yylex, yyerror,
    etc), as well as gratuitiously global symbol names, so we can have
    multiple yacc generated parsers in gdb.  Note that these are only
@@ -178,7 +178,7 @@ parse_number (char *, int, int, YYSTYPE *);
 %token <sval> STRING
 %token <sval> NSSTRING         /* ObjC Foundation "NSString" literal */
 %token <sval> SELECTOR         /* ObjC "@selector" pseudo-operator   */
-%token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence. */
+%token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence.  */
 %token <tsym> TYPENAME
 %token <class> CLASSNAME       /* ObjC Class name */
 %type <sval> name
@@ -333,12 +333,13 @@ exp       :       '[' TYPENAME
                        {
                          CORE_ADDR class;
 
-                         class = lookup_objc_class (copy_name ($2.stoken));
+                         class = lookup_objc_class (parse_gdbarch,
+                                                    copy_name ($2.stoken));
                          if (class == 0)
                            error ("%s is not an ObjC Class", 
                                   copy_name ($2.stoken));
                          write_exp_elt_opcode (OP_LONG);
-                         write_exp_elt_type (builtin_type_int);
+                         write_exp_elt_type (parse_type->builtin_int);
                          write_exp_elt_longcst ((LONGEST) class);
                          write_exp_elt_opcode (OP_LONG);
                          start_msglist();
@@ -353,7 +354,7 @@ exp :       '[' TYPENAME
 exp    :       '[' CLASSNAME
                        {
                          write_exp_elt_opcode (OP_LONG);
-                         write_exp_elt_type (builtin_type_int);
+                         write_exp_elt_type (parse_type->builtin_int);
                          write_exp_elt_longcst ((LONGEST) $2.class);
                          write_exp_elt_opcode (OP_LONG);
                          start_msglist();
@@ -543,10 +544,12 @@ exp       :       INT
 
 exp    :       NAME_OR_INT
                        { YYSTYPE val;
-                         parse_number ($1.stoken.ptr, $1.stoken.length, 0, &val);
+                         parse_number ($1.stoken.ptr,
+                                       $1.stoken.length, 0, &val);
                          write_exp_elt_opcode (OP_LONG);
                          write_exp_elt_type (val.typed_val_int.type);
-                         write_exp_elt_longcst ((LONGEST)val.typed_val_int.val);
+                         write_exp_elt_longcst ((LONGEST) 
+                                                val.typed_val_int.val);
                          write_exp_elt_opcode (OP_LONG);
                        }
        ;
@@ -575,7 +578,7 @@ exp :       SELECTOR
 
 exp    :       SIZEOF '(' type ')'     %prec UNARY
                        { write_exp_elt_opcode (OP_LONG);
-                         write_exp_elt_type (builtin_type_int);
+                         write_exp_elt_type (parse_type->builtin_int);
                          CHECK_TYPEDEF ($3);
                          write_exp_elt_longcst ((LONGEST) TYPE_LENGTH ($3));
                          write_exp_elt_opcode (OP_LONG); }
@@ -592,12 +595,12 @@ exp       :       STRING
                          while (count-- > 0)
                            {
                              write_exp_elt_opcode (OP_LONG);
-                             write_exp_elt_type (builtin_type_char);
+                             write_exp_elt_type (parse_type->builtin_char);
                              write_exp_elt_longcst ((LONGEST)(*sp++));
                              write_exp_elt_opcode (OP_LONG);
                            }
                          write_exp_elt_opcode (OP_LONG);
-                         write_exp_elt_type (builtin_type_char);
+                         write_exp_elt_type (parse_type->builtin_char);
                          write_exp_elt_longcst ((LONGEST)'\0');
                          write_exp_elt_opcode (OP_LONG);
                          write_exp_elt_opcode (OP_ARRAY);
@@ -623,7 +626,8 @@ block       :       BLOCKNAME
                              struct symtab *tem =
                                  lookup_symtab (copy_name ($1.stoken));
                              if (tem)
-                               $$ = BLOCKVECTOR_BLOCK (BLOCKVECTOR (tem), STATIC_BLOCK);
+                               $$ = BLOCKVECTOR_BLOCK (BLOCKVECTOR (tem),
+                                                       STATIC_BLOCK);
                              else
                                error ("No file or function \"%s\".",
                                       copy_name ($1.stoken));
@@ -634,8 +638,7 @@ block       :       BLOCKNAME
 block  :       block COLONCOLON name
                        { struct symbol *tem
                            = lookup_symbol (copy_name ($3), $1,
-                                            VAR_DOMAIN, (int *) NULL,
-                                            (struct symtab **) NULL);
+                                            VAR_DOMAIN, (int *) NULL);
                          if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK)
                            error ("No function \"%s\" in specified context.",
                                   copy_name ($3));
@@ -645,8 +648,7 @@ block       :       block COLONCOLON name
 variable:      block COLONCOLON name
                        { struct symbol *sym;
                          sym = lookup_symbol (copy_name ($3), $1,
-                                              VAR_DOMAIN, (int *) NULL,
-                                              (struct symtab **) NULL);
+                                              VAR_DOMAIN, (int *) NULL);
                          if (sym == 0)
                            error ("No symbol \"%s\" in specified context.",
                                   copy_name ($3));
@@ -705,8 +707,7 @@ variable:   qualified_name
 
                          sym =
                            lookup_symbol (name, (const struct block *) NULL,
-                                          VAR_DOMAIN, (int *) NULL,
-                                          (struct symtab **) NULL);
+                                          VAR_DOMAIN, (int *) NULL);
                          if (sym)
                            {
                              write_exp_elt_opcode (OP_VAR_VALUE);
@@ -718,16 +719,14 @@ variable: qualified_name
 
                          msymbol = lookup_minimal_symbol (name, NULL, NULL);
                          if (msymbol != NULL)
-                           {
-                             write_exp_msymbol (msymbol,
-                                                lookup_function_type (builtin_type_int),
-                                                builtin_type_int);
-                           }
+                           write_exp_msymbol (msymbol);
+                         else if (!have_full_symbols ()
+                                  && !have_partial_symbols ())
+                           error ("No symbol table is loaded.  "
+                                  "Use the \"file\" command.");
                          else
-                           if (!have_full_symbols () && !have_partial_symbols ())
-                             error ("No symbol table is loaded.  Use the \"file\" command.");
-                           else
-                             error ("No symbol \"%s\" in current context.", name);
+                           error ("No symbol \"%s\" in current context.",
+                                  name);
                        }
        ;
 
@@ -774,14 +773,11 @@ variable: name_not_typename
                              msymbol =
                                lookup_minimal_symbol (arg, NULL, NULL);
                              if (msymbol != NULL)
-                               {
-                                 write_exp_msymbol (msymbol,
-                                                    lookup_function_type (builtin_type_int),
-                                                    builtin_type_int);
-                               }
+                               write_exp_msymbol (msymbol);
                              else if (!have_full_symbols () && 
                                       !have_partial_symbols ())
-                               error ("No symbol table is loaded.  Use the \"file\" command.");
+                               error ("No symbol table is loaded.  "
+                                      "Use the \"file\" command.");
                              else
                                error ("No symbol \"%s\" in current context.",
                                       copy_name ($1.stoken));
@@ -872,31 +868,31 @@ typebase  /* Implements (approximately): (type-qualifier)* type-specifier.  */
                            $$ = $1.type;
                        }
        |       INT_KEYWORD
-                       { $$ = builtin_type_int; }
+                       { $$ = parse_type->builtin_int; }
        |       LONG
-                       { $$ = builtin_type_long; }
+                       { $$ = parse_type->builtin_long; }
        |       SHORT
-                       { $$ = builtin_type_short; }
+                       { $$ = parse_type->builtin_short; }
        |       LONG INT_KEYWORD
-                       { $$ = builtin_type_long; }
+                       { $$ = parse_type->builtin_long; }
        |       UNSIGNED LONG INT_KEYWORD
-                       { $$ = builtin_type_unsigned_long; }
+                       { $$ = parse_type->builtin_unsigned_long; }
        |       LONG LONG
-                       { $$ = builtin_type_long_long; }
+                       { $$ = parse_type->builtin_long_long; }
        |       LONG LONG INT_KEYWORD
-                       { $$ = builtin_type_long_long; }
+                       { $$ = parse_type->builtin_long_long; }
        |       UNSIGNED LONG LONG
-                       { $$ = builtin_type_unsigned_long_long; }
+                       { $$ = parse_type->builtin_unsigned_long_long; }
        |       UNSIGNED LONG LONG INT_KEYWORD
-                       { $$ = builtin_type_unsigned_long_long; }
+                       { $$ = parse_type->builtin_unsigned_long_long; }
        |       SHORT INT_KEYWORD
-                       { $$ = builtin_type_short; }
+                       { $$ = parse_type->builtin_short; }
        |       UNSIGNED SHORT INT_KEYWORD
-                       { $$ = builtin_type_unsigned_short; }
+                       { $$ = parse_type->builtin_unsigned_short; }
        |       DOUBLE_KEYWORD
-                       { $$ = builtin_type_double; }
+                       { $$ = parse_type->builtin_double; }
        |       LONG DOUBLE_KEYWORD
-                       { $$ = builtin_type_long_double; }
+                       { $$ = parse_type->builtin_long_double; }
        |       STRUCT name
                        { $$ = lookup_struct (copy_name ($2),
                                              expression_context_block); }
@@ -910,13 +906,17 @@ typebase  /* Implements (approximately): (type-qualifier)* type-specifier.  */
                        { $$ = lookup_enum (copy_name ($2),
                                            expression_context_block); }
        |       UNSIGNED typename
-                       { $$ = lookup_unsigned_typename (TYPE_NAME($2.type)); }
+                       { $$ = lookup_unsigned_typename (parse_language,
+                                                        parse_gdbarch,
+                                                        TYPE_NAME($2.type)); }
        |       UNSIGNED
-                       { $$ = builtin_type_unsigned_int; }
+                       { $$ = parse_type->builtin_unsigned_int; }
        |       SIGNED_KEYWORD typename
-                       { $$ = lookup_signed_typename (TYPE_NAME($2.type)); }
+                       { $$ = lookup_signed_typename (parse_language,
+                                                      parse_gdbarch,
+                                                      TYPE_NAME($2.type)); }
        |       SIGNED_KEYWORD
-                       { $$ = builtin_type_int; }
+                       { $$ = parse_type->builtin_int; }
        |       TEMPLATE name '<' type '>'
                        { $$ = lookup_template_type(copy_name($2), $4,
                                                    expression_context_block);
@@ -933,19 +933,19 @@ typename: TYPENAME
                {
                  $$.stoken.ptr = "int";
                  $$.stoken.length = 3;
-                 $$.type = builtin_type_int;
+                 $$.type = parse_type->builtin_int;
                }
        |       LONG
                {
                  $$.stoken.ptr = "long";
                  $$.stoken.length = 4;
-                 $$.type = builtin_type_long;
+                 $$.type = parse_type->builtin_long;
                }
        |       SHORT
                {
                  $$.stoken.ptr = "short";
                  $$.stoken.length = 5;
-                 $$.type = builtin_type_short;
+                 $$.type = parse_type->builtin_short;
                }
        ;
 
@@ -1019,26 +1019,10 @@ parse_number (p, len, parsed_float, putithere)
 
   if (parsed_float)
     {
-      char c;
-
-      /* It's a float since it contains a point or an exponent.  */
-
-      sscanf (p, "%" DOUBLEST_SCAN_FORMAT "%c",
-             &putithere->typed_val_float.dval, &c);
-
-      /* See if it has `f' or `l' suffix (float or long double).  */
-
-      c = tolower (p[len - 1]);
-
-      if (c == 'f')
-       putithere->typed_val_float.type = builtin_type_float;
-      else if (c == 'l')
-       putithere->typed_val_float.type = builtin_type_long_double;
-      else if (isdigit (c) || c == '.')
-       putithere->typed_val_float.type = builtin_type_double;
-      else
+      if (! parse_c_float (parse_gdbarch, p, len,
+                          &putithere->typed_val_float.dval,
+                          &putithere->typed_val_float.type))
        return ERROR;
-
       return FLOAT;
     }
 
@@ -1141,9 +1125,10 @@ parse_number (p, len, parsed_float, putithere)
 
   un = (unsigned LONGEST)n >> 2;
   if (long_p == 0
-      && (un >> (gdbarch_int_bit (current_gdbarch) - 2)) == 0)
+      && (un >> (gdbarch_int_bit (parse_gdbarch) - 2)) == 0)
     {
-      high_bit = ((unsigned LONGEST)1) << (gdbarch_int_bit (current_gdbarch) - 1);
+      high_bit
+       = ((unsigned LONGEST)1) << (gdbarch_int_bit (parse_gdbarch) - 1);
 
       /* A large decimal (not hex or octal) constant (between INT_MAX
         and UINT_MAX) is a long or unsigned long, according to ANSI,
@@ -1151,28 +1136,29 @@ parse_number (p, len, parsed_float, putithere)
         int.  This probably should be fixed.  GCC gives a warning on
         such constants.  */
 
-      unsigned_type = builtin_type_unsigned_int;
-      signed_type = builtin_type_int;
+      unsigned_type = parse_type->builtin_unsigned_int;
+      signed_type = parse_type->builtin_int;
     }
   else if (long_p <= 1
-          && (un >> (gdbarch_long_bit (current_gdbarch) - 2)) == 0)
+          && (un >> (gdbarch_long_bit (parse_gdbarch) - 2)) == 0)
     {
-      high_bit = ((unsigned LONGEST)1) << (gdbarch_long_bit (current_gdbarch) - 1);
-      unsigned_type = builtin_type_unsigned_long;
-      signed_type = builtin_type_long;
+      high_bit
+       = ((unsigned LONGEST)1) << (gdbarch_long_bit (parse_gdbarch) - 1);
+      unsigned_type = parse_type->builtin_unsigned_long;
+      signed_type = parse_type->builtin_long;
     }
   else
     {
       high_bit = (((unsigned LONGEST)1)
-                 << (gdbarch_long_long_bit (current_gdbarch) - 32 - 1)
+                 << (gdbarch_long_long_bit (parse_gdbarch) - 32 - 1)
                  << 16
                  << 16);
       if (high_bit == 0)
        /* A long long does not fit in a LONGEST.  */
        high_bit =
          (unsigned LONGEST)1 << (sizeof (LONGEST) * HOST_CHAR_BIT - 1);
-      unsigned_type = builtin_type_unsigned_long_long;
-      signed_type = builtin_type_long_long;
+      unsigned_type = parse_type->builtin_unsigned_long_long;
+      signed_type = parse_type->builtin_long_long;
     }
 
    putithere->typed_val_int.val = n;
@@ -1248,7 +1234,7 @@ yylex ()
   tokstart = lexptr;
   /* See if it is a special token of length 3.  */
   for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++)
-    if (DEPRECATED_STREQN (tokstart, tokentab3[i].operator, 3))
+    if (strncmp (tokstart, tokentab3[i].operator, 3) == 0)
       {
        lexptr += 3;
        yylval.opcode = tokentab3[i].opcode;
@@ -1257,7 +1243,7 @@ yylex ()
 
   /* See if it is a special token of length 2.  */
   for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++)
-    if (DEPRECATED_STREQN (tokstart, tokentab2[i].operator, 2))
+    if (strncmp (tokstart, tokentab2[i].operator, 2) == 0)
       {
        lexptr += 2;
        yylval.opcode = tokentab2[i].opcode;
@@ -1283,12 +1269,12 @@ yylex ()
       lexptr++;
       c = *lexptr++;
       if (c == '\\')
-       c = parse_escape (&lexptr);
+       c = parse_escape (parse_gdbarch, &lexptr);
       else if (c == '\'')
        error ("Empty character constant.");
 
       yylval.typed_val_int.val = c;
-      yylval.typed_val_int.type = builtin_type_char;
+      yylval.typed_val_int.type = parse_type->builtin_char;
 
       c = *lexptr++;
       if (c != '\'')
@@ -1354,7 +1340,8 @@ yylex ()
            hex = 1;
            local_radix = 16;
          }
-       else if (tokchr == '0' && (p[1]=='t' || p[1]=='T' || p[1]=='d' || p[1]=='D'))
+       else if (tokchr == '0' && (p[1]=='t' || p[1]=='T'
+                                  || p[1]=='d' || p[1]=='D'))
          {
            p += 2;
            hex = 0;
@@ -1513,7 +1500,7 @@ yylex ()
            break;
          case '\\':
            tokptr++;
-           c = parse_escape (&tokptr);
+           c = parse_escape (parse_gdbarch, &tokptr);
            if (c == -1)
              {
                continue;
@@ -1572,43 +1559,43 @@ yylex ()
   switch (namelen)
     {
     case 8:
-      if (DEPRECATED_STREQN (tokstart, "unsigned", 8))
+      if (strncmp (tokstart, "unsigned", 8) == 0)
        return UNSIGNED;
-      if (current_language->la_language == language_cplus
+      if (parse_language->la_language == language_cplus
          && strncmp (tokstart, "template", 8) == 0)
        return TEMPLATE;
-      if (DEPRECATED_STREQN (tokstart, "volatile", 8))
+      if (strncmp (tokstart, "volatile", 8) == 0)
        return VOLATILE_KEYWORD;
       break;
     case 6:
-      if (DEPRECATED_STREQN (tokstart, "struct", 6))
+      if (strncmp (tokstart, "struct", 6) == 0)
        return STRUCT;
-      if (DEPRECATED_STREQN (tokstart, "signed", 6))
+      if (strncmp (tokstart, "signed", 6) == 0)
        return SIGNED_KEYWORD;
-      if (DEPRECATED_STREQN (tokstart, "sizeof", 6))      
+      if (strncmp (tokstart, "sizeof", 6) == 0)
        return SIZEOF;
-      if (DEPRECATED_STREQN (tokstart, "double", 6))      
+      if (strncmp (tokstart, "double", 6) == 0) 
        return DOUBLE_KEYWORD;
       break;
     case 5:
-      if ((current_language->la_language == language_cplus)
+      if ((parse_language->la_language == language_cplus)
          && strncmp (tokstart, "class", 5) == 0)
        return CLASS;
-      if (DEPRECATED_STREQN (tokstart, "union", 5))
+      if (strncmp (tokstart, "union", 5) == 0)
        return UNION;
-      if (DEPRECATED_STREQN (tokstart, "short", 5))
+      if (strncmp (tokstart, "short", 5) == 0)
        return SHORT;
-      if (DEPRECATED_STREQN (tokstart, "const", 5))
+      if (strncmp (tokstart, "const", 5) == 0)
        return CONST_KEYWORD;
       break;
     case 4:
-      if (DEPRECATED_STREQN (tokstart, "enum", 4))
+      if (strncmp (tokstart, "enum", 4) == 0)
        return ENUM;
-      if (DEPRECATED_STREQN (tokstart, "long", 4))
+      if (strncmp (tokstart, "long", 4) == 0)
        return LONG;
       break;
     case 3:
-      if (DEPRECATED_STREQN (tokstart, "int", 3))
+      if (strncmp (tokstart, "int", 3) == 0)
        return INT_KEYWORD;
       break;
     default:
@@ -1635,16 +1622,15 @@ yylex ()
     int is_a_field_of_this = 0, *need_this;
     int hextype;
 
-    if (current_language->la_language == language_cplus ||
-       current_language->la_language == language_objc)
+    if (parse_language->la_language == language_cplus ||
+       parse_language->la_language == language_objc)
       need_this = &is_a_field_of_this;
     else
       need_this = (int *) NULL;
 
     sym = lookup_symbol (tmp, expression_context_block,
                         VAR_DOMAIN,
-                        need_this,
-                        (struct symtab **) NULL);
+                        need_this);
     /* Call lookup_symtab, not lookup_partial_symtab, in case there
        are no psymtabs (coff, xcoff, or some future change to blow
        away the psymtabs once symbols are read).  */
@@ -1721,8 +1707,7 @@ yylex ()
                      tmp1[p - namestart] = '\0';
                      cur_sym = lookup_symbol (ncopy, 
                                               expression_context_block,
-                                              VAR_DOMAIN, (int *) NULL,
-                                              (struct symtab **) NULL);
+                                              VAR_DOMAIN, (int *) NULL);
                      if (cur_sym)
                        {
                          if (SYMBOL_CLASS (cur_sym) == LOC_TYPEDEF)
@@ -1750,15 +1735,15 @@ yylex ()
          return TYPENAME;
         }
     yylval.tsym.type
-      = language_lookup_primitive_type_by_name (current_language,
-                                               current_gdbarch, tmp);
+      = language_lookup_primitive_type_by_name (parse_language,
+                                               parse_gdbarch, tmp);
     if (yylval.tsym.type != NULL)
       return TYPENAME;
 
     /* See if it's an ObjC classname.  */
     if (!sym)
       {
-       CORE_ADDR Class = lookup_objc_class(tmp);
+       CORE_ADDR Class = lookup_objc_class (parse_gdbarch, tmp);
        if (Class)
          {
            yylval.class.class = Class;
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