2009-06-16 Tristan Gingold <gingold@adacore.com>
[deliverable/binutils-gdb.git] / gdb / f-exp.y
index a9504c18418a799244408421e5bec8a3c9ab3cdb..c04c8f464108036d60138b416ab06d3d23f236c3 100644 (file)
@@ -1,25 +1,25 @@
 /* YACC parser for Fortran expressions, for GDB.
-   Copyright 1986, 1989, 1990, 1991, 1993, 1994, 1995, 1996, 2000, 2001
+   Copyright (C) 1986, 1989, 1990, 1991, 1993, 1994, 1995, 1996, 2000, 2001,
+   2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
    Free Software Foundation, Inc.
 
    Contributed by Motorola.  Adapted from the C parser by Farooq Butt
    (fmbutt@engage.sps.mot.com).
 
-This file is part of GDB.
+   This file is part of GDB.
 
-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
-(at your option) any later version.
+   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 3 of the License, or
+   (at your option) any later version.
 
-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.
+   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
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* This was blantantly ripped off the C expression parser, please 
    be aware of that as you look at its basic structure -FMB */ 
@@ -56,6 +56,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 #include "block.h"
 #include <ctype.h>
 
+#define parse_type builtin_type (parse_gdbarch)
+#define parse_f_type builtin_f_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 the variables
@@ -179,7 +182,6 @@ static int parse_number (char *, int, int, YYSTYPE *);
 %token <tsym> TYPENAME
 %type <sval> name
 %type <ssym> name_not_typename
-%type <tsym> typename
 
 /* A NAME_OR_INT is a symbol which is not known in the symbol table,
    but which would parse as a valid number in the current input radix.
@@ -218,7 +220,9 @@ static int parse_number (char *, int, int, YYSTYPE *);
 %left LSH RSH
 %left '@'
 %left '+' '-'
-%left '*' '/' '%'
+%left '*' '/'
+%right STARSTAR
+%right '%'
 %right UNARY 
 %right '('
 
@@ -284,25 +288,48 @@ arglist   :       exp
                        { arglist_len = 1; }
        ;
 
-arglist :      substring
-                        { arglist_len = 2;}
+arglist :      subrange
+                       { arglist_len = 1; }
        ;
    
 arglist        :       arglist ',' exp   %prec ABOVE_COMMA
                        { arglist_len++; }
        ;
 
-substring:     exp ':' exp   %prec ABOVE_COMMA
-                       { } 
+/* There are four sorts of subrange types in F90.  */
+
+subrange:      exp ':' exp     %prec ABOVE_COMMA
+                       { write_exp_elt_opcode (OP_F90_RANGE); 
+                         write_exp_elt_longcst (NONE_BOUND_DEFAULT);
+                         write_exp_elt_opcode (OP_F90_RANGE); }
+       ;
+
+subrange:      exp ':' %prec ABOVE_COMMA
+                       { write_exp_elt_opcode (OP_F90_RANGE);
+                         write_exp_elt_longcst (HIGH_BOUND_DEFAULT);
+                         write_exp_elt_opcode (OP_F90_RANGE); }
+       ;
+
+subrange:      ':' exp %prec ABOVE_COMMA
+                       { write_exp_elt_opcode (OP_F90_RANGE);
+                         write_exp_elt_longcst (LOW_BOUND_DEFAULT);
+                         write_exp_elt_opcode (OP_F90_RANGE); }
        ;
 
+subrange:      ':'     %prec ABOVE_COMMA
+                       { write_exp_elt_opcode (OP_F90_RANGE);
+                         write_exp_elt_longcst (BOTH_BOUND_DEFAULT);
+                         write_exp_elt_opcode (OP_F90_RANGE); }
+       ;
 
 complexnum:     exp ',' exp 
                        { }                          
         ;
 
 exp    :       '(' complexnum ')'
-                       { write_exp_elt_opcode(OP_COMPLEX); }
+                       { write_exp_elt_opcode(OP_COMPLEX);
+                         write_exp_elt_type (parse_f_type->builtin_complex_s16);
+                         write_exp_elt_opcode(OP_COMPLEX); }
        ;
 
 exp    :       '(' type ')' exp  %prec UNARY
@@ -311,12 +338,22 @@ exp       :       '(' type ')' exp  %prec UNARY
                          write_exp_elt_opcode (UNOP_CAST); }
        ;
 
+exp     :       exp '%' name
+                        { write_exp_elt_opcode (STRUCTOP_STRUCT);
+                          write_exp_string ($3);
+                          write_exp_elt_opcode (STRUCTOP_STRUCT); }
+        ;
+
 /* Binary operators in order of decreasing precedence.  */
 
 exp    :       exp '@' exp
                        { write_exp_elt_opcode (BINOP_REPEAT); }
        ;
 
+exp    :       exp STARSTAR exp
+                       { write_exp_elt_opcode (BINOP_EXP); }
+       ;
+
 exp    :       exp '*' exp
                        { write_exp_elt_opcode (BINOP_MUL); }
        ;
@@ -325,10 +362,6 @@ exp        :       exp '/' exp
                        { write_exp_elt_opcode (BINOP_DIV); }
        ;
 
-exp    :       exp '%' exp
-                       { write_exp_elt_opcode (BINOP_REM); }
-       ;
-
 exp    :       exp '+' exp
                        { write_exp_elt_opcode (BINOP_ADD); }
        ;
@@ -418,7 +451,7 @@ exp :       NAME_OR_INT
 
 exp    :       FLOAT
                        { write_exp_elt_opcode (OP_DOUBLE);
-                         write_exp_elt_type (builtin_type_f_real_s8);
+                         write_exp_elt_type (parse_f_type->builtin_real_s8);
                          write_exp_elt_dblcst ($1);
                          write_exp_elt_opcode (OP_DOUBLE); }
        ;
@@ -431,7 +464,7 @@ exp :       VARIABLE
 
 exp    :       SIZEOF '(' type ')'     %prec UNARY
                        { write_exp_elt_opcode (OP_LONG);
-                         write_exp_elt_type (builtin_type_f_integer);
+                         write_exp_elt_type (parse_f_type->builtin_integer);
                          CHECK_TYPEDEF ($3);
                          write_exp_elt_longcst ((LONGEST) TYPE_LENGTH ($3));
                          write_exp_elt_opcode (OP_LONG); }
@@ -476,16 +509,12 @@ variable: name_not_typename
                          else
                            {
                              struct minimal_symbol *msymbol;
-                             register char *arg = copy_name ($1.stoken);
+                             char *arg = copy_name ($1.stoken);
 
                              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.");
                              else
@@ -526,8 +555,8 @@ ptype       :       typebase
                          {
                            range_type =
                              create_range_type ((struct type *) NULL,
-                                                builtin_type_f_integer, 0,
-                                                array_size - 1);
+                                                parse_f_type->builtin_integer,
+                                                0, array_size - 1);
                            follow_type =
                              create_array_type ((struct type *) NULL,
                                                 follow_type, range_type);
@@ -572,32 +601,29 @@ typebase  /* Implements (approximately): (type-qualifier)* type-specifier */
        :       TYPENAME
                        { $$ = $1.type; }
        |       INT_KEYWORD
-                       { $$ = builtin_type_f_integer; }
+                       { $$ = parse_f_type->builtin_integer; }
        |       INT_S2_KEYWORD 
-                       { $$ = builtin_type_f_integer_s2; }
+                       { $$ = parse_f_type->builtin_integer_s2; }
        |       CHARACTER 
-                       { $$ = builtin_type_f_character; }
+                       { $$ = parse_f_type->builtin_character; }
        |       LOGICAL_KEYWORD 
-                       { $$ = builtin_type_f_logical;} 
+                       { $$ = parse_f_type->builtin_logical; }
        |       LOGICAL_S2_KEYWORD
-                       { $$ = builtin_type_f_logical_s2;}
+                       { $$ = parse_f_type->builtin_logical_s2; }
        |       LOGICAL_S1_KEYWORD 
-                       { $$ = builtin_type_f_logical_s1;}
+                       { $$ = parse_f_type->builtin_logical_s1; }
        |       REAL_KEYWORD 
-                       { $$ = builtin_type_f_real;}
+                       { $$ = parse_f_type->builtin_real; }
        |       REAL_S8_KEYWORD
-                       { $$ = builtin_type_f_real_s8;}
+                       { $$ = parse_f_type->builtin_real_s8; }
        |       REAL_S16_KEYWORD
-                       { $$ = builtin_type_f_real_s16;}
+                       { $$ = parse_f_type->builtin_real_s16; }
        |       COMPLEX_S8_KEYWORD
-                       { $$ = builtin_type_f_complex_s8;}
+                       { $$ = parse_f_type->builtin_complex_s8; }
        |       COMPLEX_S16_KEYWORD 
-                       { $$ = builtin_type_f_complex_s16;}
+                       { $$ = parse_f_type->builtin_complex_s16; }
        |       COMPLEX_S32_KEYWORD 
-                       { $$ = builtin_type_f_complex_s32;}
-       ;
-
-typename:      TYPENAME
+                       { $$ = parse_f_type->builtin_complex_s32; }
        ;
 
 nonempty_typelist
@@ -614,11 +640,7 @@ nonempty_typelist
        ;
 
 name   :       NAME
-                       { $$ = $1.stoken; }
-       |       TYPENAME
-                       { $$ = $1.stoken; }
-       |       NAME_OR_INT
-                       { $$ = $1.stoken; }
+               {  $$ = $1.stoken; }
        ;
 
 name_not_typename :    NAME
@@ -641,15 +663,15 @@ name_not_typename :       NAME
 
 static int
 parse_number (p, len, parsed_float, putithere)
-     register char *p;
-     register int len;
+     char *p;
+     int len;
      int parsed_float;
      YYSTYPE *putithere;
 {
-  register LONGEST n = 0;
-  register LONGEST prevn = 0;
-  register int c;
-  register int base = input_radix;
+  LONGEST n = 0;
+  LONGEST prevn = 0;
+  int c;
+  int base = input_radix;
   int unsigned_p = 0;
   int long_p = 0;
   ULONGEST high_bit;
@@ -744,25 +766,26 @@ parse_number (p, len, parsed_float, putithere)
      target int size is different to the target long size.
      
      In the expression below, we could have tested
-     (n >> TARGET_INT_BIT)
+     (n >> gdbarch_int_bit (parse_gdbarch))
      to see if it was zero,
      but too many compilers warn about that, when ints and longs
      are the same size.  So we shift it twice, with fewer bits
      each time, for the same result.  */
   
-  if ((TARGET_INT_BIT != TARGET_LONG_BIT 
-       && ((n >> 2) >> (TARGET_INT_BIT-2)))   /* Avoid shift warning */
+  if ((gdbarch_int_bit (parse_gdbarch) != gdbarch_long_bit (parse_gdbarch)
+       && ((n >> 2)
+          >> (gdbarch_int_bit (parse_gdbarch)-2))) /* Avoid shift warning */
       || long_p)
     {
-      high_bit = ((ULONGEST)1) << (TARGET_LONG_BIT-1);
-      unsigned_type = builtin_type_unsigned_long;
-      signed_type = builtin_type_long;
+      high_bit = ((ULONGEST)1) << (gdbarch_long_bit (parse_gdbarch)-1);
+      unsigned_type = parse_type->builtin_unsigned_long;
+      signed_type = parse_type->builtin_long;
     }
   else 
     {
-      high_bit = ((ULONGEST)1) << (TARGET_INT_BIT-1);
-      unsigned_type = builtin_type_unsigned_int;
-      signed_type = builtin_type_int;
+      high_bit = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch)-1);
+      unsigned_type = parse_type->builtin_unsigned_int;
+      signed_type = parse_type->builtin_int;
     }    
   
   putithere->typed_val.val = n;
@@ -944,8 +967,8 @@ yylex ()
     { 
       for (i = 0; boolean_values[i].name != NULL; i++)
        {
-         if STREQN (tokstart, boolean_values[i].name,
-                   strlen (boolean_values[i].name))
+         if (strncmp (tokstart, boolean_values[i].name,
+                      strlen (boolean_values[i].name)) == 0)
            {
              lexptr += strlen (boolean_values[i].name); 
              yylval.lval = boolean_values[i].value; 
@@ -954,16 +977,25 @@ yylex ()
        }
     }
   
-  /* See if it is a special .foo. operator */
+  /* See if it is a special .foo. operator */
   
   for (i = 0; dot_ops[i].operator != NULL; i++)
-    if (STREQN (tokstart, dot_ops[i].operator, strlen (dot_ops[i].operator)))
+    if (strncmp (tokstart, dot_ops[i].operator, strlen (dot_ops[i].operator)) == 0)
       {
        lexptr += strlen (dot_ops[i].operator);
        yylval.opcode = dot_ops[i].opcode;
        return dot_ops[i].token;
       }
   
+  /* See if it is an exponentiation operator.  */
+
+  if (strncmp (tokstart, "**", 2) == 0)
+    {
+      lexptr += 2;
+      yylval.opcode = BINOP_EXP;
+      return STARSTAR;
+    }
+
   switch (c = *tokstart)
     {
     case 0:
@@ -1018,7 +1050,7 @@ yylex ()
       {
         /* It's a number.  */
        int got_dot = 0, got_e = 0, got_d = 0, toktype;
-       register char *p = tokstart;
+       char *p = tokstart;
        int hex = input_radix > 10;
        
        if (c == '0' && (p[1] == 'x' || p[1] == 'X'))
@@ -1114,8 +1146,8 @@ yylex ()
   /* Catch specific keywords.  */
   
   for (i = 0; f77_keywords[i].operator != NULL; i++)
-    if (STREQN(tokstart, f77_keywords[i].operator,
-               strlen(f77_keywords[i].operator)))
+    if (strncmp (tokstart, f77_keywords[i].operator,
+                strlen(f77_keywords[i].operator)) == 0)
       {
        /*      lexptr += strlen(f77_keywords[i].operator); */ 
        yylval.opcode = f77_keywords[i].opcode;
@@ -1141,16 +1173,18 @@ yylex ()
     int hextype;
     
     sym = lookup_symbol (tmp, expression_context_block,
-                        VAR_NAMESPACE,
-                        current_language->la_language == language_cplus
-                        ? &is_a_field_of_this : NULL,
-                        NULL);
+                        VAR_DOMAIN,
+                        parse_language->la_language == language_cplus
+                        ? &is_a_field_of_this : NULL);
     if (sym && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
       {
        yylval.tsym.type = SYMBOL_TYPE (sym);
        return TYPENAME;
       }
-    if ((yylval.tsym.type = lookup_primitive_typename (tmp)) != 0)
+    yylval.tsym.type
+      = language_lookup_primitive_type_by_name (parse_language,
+                                               parse_gdbarch, tmp);
+    if (yylval.tsym.type != NULL)
       return TYPENAME;
     
     /* Input names that aren't symbols but ARE valid hex numbers,
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