gcc/fortran/misc.c

   1 /* Miscellaneous stuff that doesn't fit anywhere else.
   2    Copyright (C) 2000-2013 Free Software Foundation, Inc.
   3    Contributed by Andy Vaught
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #include "config.h"
  22 #include "system.h"
  23 #include "coretypes.h"
  24 #include "gfortran.h"
  25
  26
  27 /* Get terminal width.  */
  28
  29 int
  30 gfc_terminal_width (void)
  31 {
  32   return 80;
  33 }
  34
  35
  36 /* Initialize a typespec to unknown.  */
  37
  38 void
  39 gfc_clear_ts (gfc_typespec *ts)
  40 {
  41   ts->type = BT_UNKNOWN;
  42   ts->u.derived = NULL;
  43   ts->kind = 0;
  44   ts->u.cl = NULL;
  45   ts->interface = NULL;
  46   /* flag that says if the type is C interoperable */
  47   ts->is_c_interop = 0;
  48   /* says what f90 type the C kind interops with */
  49   ts->f90_type = BT_UNKNOWN;
  50   /* flag that says whether it's from iso_c_binding or not */
  51   ts->is_iso_c = 0;
  52   ts->deferred = false;
  53 }
  54
  55
  56 /* Open a file for reading.  */
  57
  58 FILE *
  59 gfc_open_file (const char *name)
  60 {
  61   if (!*name)
  62     return stdin;
  63
  64   return fopen (name, "r");
  65 }
  66
  67
  68 /* Return a string for each type.  */
  69
  70 const char *
  71 gfc_basic_typename (bt type)
  72 {
  73   const char *p;
  74
  75   switch (type)
  76     {
  77     case BT_INTEGER:
  78       p = "INTEGER";
  79       break;
  80     case BT_REAL:
  81       p = "REAL";
  82       break;
  83     case BT_COMPLEX:
  84       p = "COMPLEX";
  85       break;
  86     case BT_LOGICAL:
  87       p = "LOGICAL";
  88       break;
  89     case BT_CHARACTER:
  90       p = "CHARACTER";
  91       break;
  92     case BT_HOLLERITH:
  93       p = "HOLLERITH";
  94       break;
  95     case BT_DERIVED:
  96       p = "DERIVED";
  97       break;
  98     case BT_CLASS:
  99       p = "CLASS";
 100       break;
 101     case BT_PROCEDURE:
 102       p = "PROCEDURE";
 103       break;
 104     case BT_VOID:
 105       p = "VOID";
 106       break;
 107     case BT_UNKNOWN:
 108       p = "UNKNOWN";
 109       break;
 110     case BT_ASSUMED:
 111       p = "TYPE(*)";
 112       break;
 113     default:
 114       gfc_internal_error ("gfc_basic_typename(): Undefined type");
 115     }
 116
 117   return p;
 118 }
 119
 120
 121 /* Return a string describing the type and kind of a typespec.  Because
 122    we return alternating buffers, this subroutine can appear twice in
 123    the argument list of a single statement.  */
 124
 125 const char *
 126 gfc_typename (gfc_typespec *ts)
 127 {
 128   static char buffer1[GFC_MAX_SYMBOL_LEN + 7];  /* 7 for "TYPE()" + '\0'.  */
 129   static char buffer2[GFC_MAX_SYMBOL_LEN + 7];
 130   static int flag = 0;
 131   char *buffer;
 132
 133   buffer = flag ? buffer1 : buffer2;
 134   flag = !flag;
 135
 136   switch (ts->type)
 137     {
 138     case BT_INTEGER:
 139       sprintf (buffer, "INTEGER(%d)", ts->kind);
 140       break;
 141     case BT_REAL:
 142       sprintf (buffer, "REAL(%d)", ts->kind);
 143       break;
 144     case BT_COMPLEX:
 145       sprintf (buffer, "COMPLEX(%d)", ts->kind);
 146       break;
 147     case BT_LOGICAL:
 148       sprintf (buffer, "LOGICAL(%d)", ts->kind);
 149       break;
 150     case BT_CHARACTER:
 151       sprintf (buffer, "CHARACTER(%d)", ts->kind);
 152       break;
 153     case BT_HOLLERITH:
 154       sprintf (buffer, "HOLLERITH");
 155       break;
 156     case BT_DERIVED:
 157       sprintf (buffer, "TYPE(%s)", ts->u.derived->name);
 158       break;
 159     case BT_CLASS:
 160       ts = &ts->u.derived->components->ts;
 161       if (ts->u.derived->attr.unlimited_polymorphic)
 162         sprintf (buffer, "CLASS(*)");
 163       else
 164         sprintf (buffer, "CLASS(%s)", ts->u.derived->name);
 165       break;
 166     case BT_ASSUMED:
 167       sprintf (buffer, "TYPE(*)");
 168       break;
 169     case BT_PROCEDURE:
 170       strcpy (buffer, "PROCEDURE");
 171       break;
 172     case BT_UNKNOWN:
 173       strcpy (buffer, "UNKNOWN");
 174       break;
 175     default:
 176       gfc_internal_error ("gfc_typename(): Undefined type");
 177     }
 178
 179   return buffer;
 180 }
 181
 182
 183 /* Given an mstring array and a code, locate the code in the table,
 184    returning a pointer to the string.  */
 185
 186 const char *
 187 gfc_code2string (const mstring *m, int code)
 188 {
 189   while (m->string != NULL)
 190     {
 191       if (m->tag == code)
 192         return m->string;
 193       m++;
 194     }
 195
 196   gfc_internal_error ("gfc_code2string(): Bad code");
 197   /* Not reached */
 198 }
 199
 200
 201 /* Given an mstring array and a string, returns the value of the tag
 202    field.  Returns the final tag if no matches to the string are found.  */
 203
 204 int
 205 gfc_string2code (const mstring *m, const char *string)
 206 {
 207   for (; m->string != NULL; m++)
 208     if (strcmp (m->string, string) == 0)
 209       return m->tag;
 210
 211   return m->tag;
 212 }
 213
 214
 215 /* Convert an intent code to a string.  */
 216 /* TODO: move to gfortran.h as define.  */
 217
 218 const char *
 219 gfc_intent_string (sym_intent i)
 220 {
 221   return gfc_code2string (intents, i);
 222 }
 223
 224
 225 /***************** Initialization functions ****************/
 226
 227 /* Top level initialization.  */
 228
 229 void
 230 gfc_init_1 (void)
 231 {
 232   gfc_error_init_1 ();
 233   gfc_scanner_init_1 ();
 234   gfc_arith_init_1 ();
 235   gfc_intrinsic_init_1 ();
 236 }
 237
 238
 239 /* Per program unit initialization.  */
 240
 241 void
 242 gfc_init_2 (void)
 243 {
 244   gfc_symbol_init_2 ();
 245   gfc_module_init_2 ();
 246 }
 247
 248
 249 /******************* Destructor functions ******************/
 250
 251 /* Call all of the top level destructors.  */
 252
 253 void
 254 gfc_done_1 (void)
 255 {
 256   gfc_scanner_done_1 ();
 257   gfc_intrinsic_done_1 ();
 258   gfc_arith_done_1 ();
 259 }
 260
 261
 262 /* Per program unit destructors.  */
 263
 264 void
 265 gfc_done_2 (void)
 266 {
 267   gfc_symbol_done_2 ();
 268   gfc_module_done_2 ();
 269 }
 270
 271
 272 /* Returns the index into the table of C interoperable kinds where the
 273    kind with the given name (c_kind_name) was found.  */
 274
 275 int
 276 get_c_kind(const char *c_kind_name, CInteropKind_t kinds_table[])
 277 {
 278   int index = 0;
 279
 280   for (index = 0; index < ISOCBINDING_LAST; index++)
 281     if (strcmp (kinds_table[index].name, c_kind_name) == 0)
 282       return index;
 283
 284   return ISOCBINDING_INVALID;
 285 }