gcc/fortran/data.c

   1 /* Supporting functions for resolving DATA statement.
   2    Copyright (C) 2002-2013 Free Software Foundation, Inc.
   3    Contributed by Lifang Zeng <zlf605@hotmail.com>
   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
  22 /* Notes for DATA statement implementation:
  23
  24    We first assign initial value to each symbol by gfc_assign_data_value
  25    during resolving DATA statement. Refer to check_data_variable and
  26    traverse_data_list in resolve.c.
  27
  28    The complexity exists in the handling of array section, implied do
  29    and array of struct appeared in DATA statement.
  30
  31    We call gfc_conv_structure, gfc_con_array_array_initializer,
  32    etc., to convert the initial value. Refer to trans-expr.c and
  33    trans-array.c.  */
  34
  35 #include "config.h"
  36 #include "system.h"
  37 #include "coretypes.h"
  38 #include "gfortran.h"
  39 #include "data.h"
  40 #include "constructor.h"
  41
  42 static void formalize_init_expr (gfc_expr *);
  43
  44 /* Calculate the array element offset.  */
  45
  46 static void
  47 get_array_index (gfc_array_ref *ar, mpz_t *offset)
  48 {
  49   gfc_expr *e;
  50   int i;
  51   mpz_t delta;
  52   mpz_t tmp;
  53
  54   mpz_init (tmp);
  55   mpz_set_si (*offset, 0);
  56   mpz_init_set_si (delta, 1);
  57   for (i = 0; i < ar->dimen; i++)
  58     {
  59       e = gfc_copy_expr (ar->start[i]);
  60       gfc_simplify_expr (e, 1);
  61
  62       if ((gfc_is_constant_expr (ar->as->lower[i]) == 0)
  63           || (gfc_is_constant_expr (ar->as->upper[i]) == 0)
  64           || (gfc_is_constant_expr (e) == 0))
  65         gfc_error ("non-constant array in DATA statement %L", &ar->where);
  66
  67       mpz_set (tmp, e->value.integer);
  68       gfc_free_expr (e);
  69       mpz_sub (tmp, tmp, ar->as->lower[i]->value.integer);
  70       mpz_mul (tmp, tmp, delta);
  71       mpz_add (*offset, tmp, *offset);
  72
  73       mpz_sub (tmp, ar->as->upper[i]->value.integer,
  74                ar->as->lower[i]->value.integer);
  75       mpz_add_ui (tmp, tmp, 1);
  76       mpz_mul (delta, tmp, delta);
  77     }
  78   mpz_clear (delta);
  79   mpz_clear (tmp);
  80 }
  81
  82 /* Find if there is a constructor which component is equal to COM.
  83    TODO: remove this, use symbol.c(gfc_find_component) instead.  */
  84
  85 static gfc_constructor *
  86 find_con_by_component (gfc_component *com, gfc_constructor_base base)
  87 {
  88   gfc_constructor *c;
  89
  90   for (c = gfc_constructor_first (base); c; c = gfc_constructor_next (c))
  91     if (com == c->n.component)
  92       return c;
  93
  94   return NULL;
  95 }
  96
  97
  98 /* Create a character type initialization expression from RVALUE.
  99    TS [and REF] describe [the substring of] the variable being initialized.
 100    INIT is the existing initializer, not NULL.  Initialization is performed
 101    according to normal assignment rules.  */
 102
 103 static gfc_expr *
 104 create_character_initializer (gfc_expr *init, gfc_typespec *ts,
 105                               gfc_ref *ref, gfc_expr *rvalue)
 106 {
 107   int len, start, end;
 108   gfc_char_t *dest;
 109   bool alloced_init = false;
 110
 111   gfc_extract_int (ts->u.cl->length, &len);
 112
 113   if (init == NULL)
 114     {
 115       /* Create a new initializer.  */
 116       init = gfc_get_character_expr (ts->kind, NULL, NULL, len);
 117       init->ts = *ts;
 118       alloced_init = true;
 119     }
 120
 121   dest = init->value.character.string;
 122
 123   if (ref)
 124     {
 125       gfc_expr *start_expr, *end_expr;
 126
 127       gcc_assert (ref->type == REF_SUBSTRING);
 128
 129       /* Only set a substring of the destination.  Fortran substring bounds
 130          are one-based [start, end], we want zero based [start, end).  */
 131       start_expr = gfc_copy_expr (ref->u.ss.start);
 132       end_expr = gfc_copy_expr (ref->u.ss.end);
 133
 134       if ((!gfc_simplify_expr(start_expr, 1))
 135           || !(gfc_simplify_expr(end_expr, 1)))
 136         {
 137           gfc_error ("failure to simplify substring reference in DATA "
 138                      "statement at %L", &ref->u.ss.start->where);
 139           gfc_free_expr (start_expr);
 140           gfc_free_expr (end_expr);
 141           if (alloced_init)
 142             gfc_free_expr (init);
 143           return NULL;
 144         }
 145
 146       gfc_extract_int (start_expr, &start);
 147       gfc_free_expr (start_expr);
 148       start--;
 149       gfc_extract_int (end_expr, &end);
 150       gfc_free_expr (end_expr);
 151     }
 152   else
 153     {
 154       /* Set the whole string.  */
 155       start = 0;
 156       end = len;
 157     }
 158
 159   /* Copy the initial value.  */
 160   if (rvalue->ts.type == BT_HOLLERITH)
 161     len = rvalue->representation.length - rvalue->ts.u.pad;
 162   else
 163     len = rvalue->value.character.length;
 164
 165   if (len > end - start)
 166     {
 167       gfc_warning_now ("Initialization string starting at %L was "
 168                        "truncated to fit the variable (%d/%d)",
 169                        &rvalue->where, end - start, len);
 170       len = end - start;
 171     }
 172
 173   if (rvalue->ts.type == BT_HOLLERITH)
 174     {
 175       int i;
 176       for (i = 0; i < len; i++)
 177         dest[start+i] = rvalue->representation.string[i];
 178     }
 179   else
 180     memcpy (&dest[start], rvalue->value.character.string,
 181             len * sizeof (gfc_char_t));
 182
 183   /* Pad with spaces.  Substrings will already be blanked.  */
 184   if (len < end - start && ref == NULL)
 185     gfc_wide_memset (&dest[start + len], ' ', end - (start + len));
 186
 187   if (rvalue->ts.type == BT_HOLLERITH)
 188     {
 189       init->representation.length = init->value.character.length;
 190       init->representation.string
 191         = gfc_widechar_to_char (init->value.character.string,
 192                                 init->value.character.length);
 193     }
 194
 195   return init;
 196 }
 197
 198
 199 /* Assign the initial value RVALUE to  LVALUE's symbol->value. If the
 200    LVALUE already has an initialization, we extend this, otherwise we
 201    create a new one.  If REPEAT is non-NULL, initialize *REPEAT
 202    consecutive values in LVALUE the same value in RVALUE.  In that case,
 203    LVALUE must refer to a full array, not an array section.  */
 204
 205 bool
 206 gfc_assign_data_value (gfc_expr *lvalue, gfc_expr *rvalue, mpz_t index,
 207                        mpz_t *repeat)
 208 {
 209   gfc_ref *ref;
 210   gfc_expr *init;
 211   gfc_expr *expr = NULL;
 212   gfc_constructor *con;
 213   gfc_constructor *last_con;
 214   gfc_symbol *symbol;
 215   gfc_typespec *last_ts;
 216   mpz_t offset;
 217
 218   symbol = lvalue->symtree->n.sym;
 219   init = symbol->value;
 220   last_ts = &symbol->ts;
 221   last_con = NULL;
 222   mpz_init_set_si (offset, 0);
 223
 224   /* Find/create the parent expressions for subobject references.  */
 225   for (ref = lvalue->ref; ref; ref = ref->next)
 226     {
 227       /* Break out of the loop if we find a substring.  */
 228       if (ref->type == REF_SUBSTRING)
 229         {
 230           /* A substring should always be the last subobject reference.  */
 231           gcc_assert (ref->next == NULL);
 232           break;
 233         }
 234
 235       /* Use the existing initializer expression if it exists.  Otherwise
 236          create a new one.  */
 237       if (init == NULL)
 238         expr = gfc_get_expr ();
 239       else
 240         expr = init;
 241
 242       /* Find or create this element.  */
 243       switch (ref->type)
 244         {
 245         case REF_ARRAY:
 246           if (ref->u.ar.as->rank == 0)
 247             {
 248               gcc_assert (ref->u.ar.as->corank > 0);
 249               if (init == NULL)
 250                 free (expr);
 251               continue;
 252             }
 253
 254           if (init && expr->expr_type != EXPR_ARRAY)
 255             {
 256               gfc_error ("'%s' at %L already is initialized at %L",
 257                          lvalue->symtree->n.sym->name, &lvalue->where,
 258                          &init->where);
 259               goto abort;
 260             }
 261
 262           if (init == NULL)
 263             {
 264               /* The element typespec will be the same as the array
 265                  typespec.  */
 266               expr->ts = *last_ts;
 267               /* Setup the expression to hold the constructor.  */
 268               expr->expr_type = EXPR_ARRAY;
 269               expr->rank = ref->u.ar.as->rank;
 270             }
 271
 272           if (ref->u.ar.type == AR_ELEMENT)
 273             get_array_index (&ref->u.ar, &offset);
 274           else
 275             mpz_set (offset, index);
 276
 277           /* Check the bounds.  */
 278           if (mpz_cmp_si (offset, 0) < 0)
 279             {
 280               gfc_error ("Data element below array lower bound at %L",
 281                          &lvalue->where);
 282               goto abort;
 283             }
 284           else if (repeat != NULL
 285                    && ref->u.ar.type != AR_ELEMENT)
 286             {
 287               mpz_t size, end;
 288               gcc_assert (ref->u.ar.type == AR_FULL
 289                           && ref->next == NULL);
 290               mpz_init_set (end, offset);
 291               mpz_add (end, end, *repeat);
 292               if (spec_size (ref->u.ar.as, &size))
 293                 {
 294                   if (mpz_cmp (end, size) > 0)
 295                     {
 296                       mpz_clear (size);
 297                       gfc_error ("Data element above array upper bound at %L",
 298                                  &lvalue->where);
 299                       goto abort;
 300                     }
 301                   mpz_clear (size);
 302                 }
 303
 304               con = gfc_constructor_lookup (expr->value.constructor,
 305                                             mpz_get_si (offset));
 306               if (!con)
 307                 {
 308                   con = gfc_constructor_lookup_next (expr->value.constructor,
 309                                                      mpz_get_si (offset));
 310                   if (con != NULL && mpz_cmp (con->offset, end) >= 0)
 311                     con = NULL;
 312                 }
 313
 314               /* Overwriting an existing initializer is non-standard but
 315                  usually only provokes a warning from other compilers.  */
 316               if (con != NULL && con->expr != NULL)
 317                 {
 318                   /* Order in which the expressions arrive here depends on
 319                      whether they are from data statements or F95 style
 320                      declarations.  Therefore, check which is the most
 321                      recent.  */
 322                   gfc_expr *exprd;
 323                   exprd = (LOCATION_LINE (con->expr->where.lb->location)
 324                            > LOCATION_LINE (rvalue->where.lb->location))
 325                           ? con->expr : rvalue;
 326                   if (gfc_notify_std (GFC_STD_GNU,
 327                                       "re-initialization of '%s' at %L",
 328                                       symbol->name, &exprd->where) == false)
 329                     return false;
 330                 }
 331
 332               while (con != NULL)
 333                 {
 334                   gfc_constructor *next_con = gfc_constructor_next (con);
 335
 336                   if (mpz_cmp (con->offset, end) >= 0)
 337                     break;
 338                   if (mpz_cmp (con->offset, offset) < 0)
 339                     {
 340                       gcc_assert (mpz_cmp_si (con->repeat, 1) > 0);
 341                       mpz_sub (con->repeat, offset, con->offset);
 342                     }
 343                   else if (mpz_cmp_si (con->repeat, 1) > 0
 344                            && mpz_get_si (con->offset)
 345                               + mpz_get_si (con->repeat) > mpz_get_si (end))
 346                     {
 347                       int endi;
 348                       splay_tree_node node
 349                         = splay_tree_lookup (con->base,
 350                                              mpz_get_si (con->offset));
 351                       gcc_assert (node
 352                                   && con == (gfc_constructor *) node->value
 353                                   && node->key == (splay_tree_key)
 354                                                   mpz_get_si (con->offset));
 355                       endi = mpz_get_si (con->offset)
 356                              + mpz_get_si (con->repeat);
 357                       if (endi > mpz_get_si (end) + 1)
 358                         mpz_set_si (con->repeat, endi - mpz_get_si (end));
 359                       else
 360                         mpz_set_si (con->repeat, 1);
 361                       mpz_set (con->offset, end);
 362                       node->key = (splay_tree_key) mpz_get_si (end);
 363                       break;
 364                     }
 365                   else
 366                     gfc_constructor_remove (con);
 367                   con = next_con;
 368                 }
 369
 370               con = gfc_constructor_insert_expr (&expr->value.constructor,
 371                                                  NULL, &rvalue->where,
 372                                                  mpz_get_si (offset));
 373               mpz_set (con->repeat, *repeat);
 374               repeat = NULL;
 375               mpz_clear (end);
 376               break;
 377             }
 378           else
 379             {
 380               mpz_t size;
 381               if (spec_size (ref->u.ar.as, &size))
 382                 {
 383                   if (mpz_cmp (offset, size) >= 0)
 384                     {
 385                       mpz_clear (size);
 386                       gfc_error ("Data element above array upper bound at %L",
 387                                  &lvalue->where);
 388                       goto abort;
 389                     }
 390                   mpz_clear (size);
 391                 }
 392             }
 393
 394           con = gfc_constructor_lookup (expr->value.constructor,
 395                                         mpz_get_si (offset));
 396           if (!con)
 397             {
 398               con = gfc_constructor_insert_expr (&expr->value.constructor,
 399                                                  NULL, &rvalue->where,
 400                                                  mpz_get_si (offset));
 401             }
 402           else if (mpz_cmp_si (con->repeat, 1) > 0)
 403             {
 404               /* Need to split a range.  */
 405               if (mpz_cmp (con->offset, offset) < 0)
 406                 {
 407                   gfc_constructor *pred_con = con;
 408                   con = gfc_constructor_insert_expr (&expr->value.constructor,
 409                                                      NULL, &con->where,
 410                                                      mpz_get_si (offset));
 411                   con->expr = gfc_copy_expr (pred_con->expr);
 412                   mpz_add (con->repeat, pred_con->offset, pred_con->repeat);
 413                   mpz_sub (con->repeat, con->repeat, offset);
 414                   mpz_sub (pred_con->repeat, offset, pred_con->offset);
 415                 }
 416               if (mpz_cmp_si (con->repeat, 1) > 0)
 417                 {
 418                   gfc_constructor *succ_con;
 419                   succ_con
 420                     = gfc_constructor_insert_expr (&expr->value.constructor,
 421                                                    NULL, &con->where,
 422                                                    mpz_get_si (offset) + 1);
 423                   succ_con->expr = gfc_copy_expr (con->expr);
 424                   mpz_sub_ui (succ_con->repeat, con->repeat, 1);
 425                   mpz_set_si (con->repeat, 1);
 426                 }
 427             }
 428           break;
 429
 430         case REF_COMPONENT:
 431           if (init == NULL)
 432             {
 433               /* Setup the expression to hold the constructor.  */
 434               expr->expr_type = EXPR_STRUCTURE;
 435               expr->ts.type = BT_DERIVED;
 436               expr->ts.u.derived = ref->u.c.sym;
 437             }
 438           else
 439             gcc_assert (expr->expr_type == EXPR_STRUCTURE);
 440           last_ts = &ref->u.c.component->ts;
 441
 442           /* Find the same element in the existing constructor.  */
 443           con = find_con_by_component (ref->u.c.component,
 444                                        expr->value.constructor);
 445
 446           if (con == NULL)
 447             {
 448               /* Create a new constructor.  */
 449               con = gfc_constructor_append_expr (&expr->value.constructor,
 450                                                  NULL, NULL);
 451               con->n.component = ref->u.c.component;
 452             }
 453           break;
 454
 455         default:
 456           gcc_unreachable ();
 457         }
 458
 459       if (init == NULL)
 460         {
 461           /* Point the container at the new expression.  */
 462           if (last_con == NULL)
 463             symbol->value = expr;
 464           else
 465             last_con->expr = expr;
 466         }
 467       init = con->expr;
 468       last_con = con;
 469     }
 470
 471   mpz_clear (offset);
 472   gcc_assert (repeat == NULL);
 473
 474   if (ref || last_ts->type == BT_CHARACTER)
 475     {
 476       if (lvalue->ts.u.cl->length == NULL && !(ref && ref->u.ss.length != NULL))
 477         return false;
 478       expr = create_character_initializer (init, last_ts, ref, rvalue);
 479     }
 480   else
 481     {
 482       /* Overwriting an existing initializer is non-standard but usually only
 483          provokes a warning from other compilers.  */
 484       if (init != NULL)
 485         {
 486           /* Order in which the expressions arrive here depends on whether
 487              they are from data statements or F95 style declarations.
 488              Therefore, check which is the most recent.  */
 489           expr = (LOCATION_LINE (init->where.lb->location)
 490                   > LOCATION_LINE (rvalue->where.lb->location))
 491                ? init : rvalue;
 492           if (gfc_notify_std (GFC_STD_GNU,
 493                               "re-initialization of '%s' at %L",
 494                               symbol->name, &expr->where) == false)
 495             return false;
 496         }
 497
 498       expr = gfc_copy_expr (rvalue);
 499       if (!gfc_compare_types (&lvalue->ts, &expr->ts))
 500         gfc_convert_type (expr, &lvalue->ts, 0);
 501     }
 502
 503   if (last_con == NULL)
 504     symbol->value = expr;
 505   else
 506     last_con->expr = expr;
 507
 508   return true;
 509
 510 abort:
 511   if (!init)
 512     gfc_free_expr (expr);
 513   mpz_clear (offset);
 514   return false;
 515 }
 516
 517
 518 /* Modify the index of array section and re-calculate the array offset.  */
 519
 520 void
 521 gfc_advance_section (mpz_t *section_index, gfc_array_ref *ar,
 522                      mpz_t *offset_ret)
 523 {
 524   int i;
 525   mpz_t delta;
 526   mpz_t tmp;
 527   bool forwards;
 528   int cmp;
 529
 530   for (i = 0; i < ar->dimen; i++)
 531     {
 532       if (ar->dimen_type[i] != DIMEN_RANGE)
 533         continue;
 534
 535       if (ar->stride[i])
 536         {
 537           mpz_add (section_index[i], section_index[i],
 538                    ar->stride[i]->value.integer);
 539         if (mpz_cmp_si (ar->stride[i]->value.integer, 0) >= 0)
 540           forwards = true;
 541         else
 542           forwards = false;
 543         }
 544       else
 545         {
 546           mpz_add_ui (section_index[i], section_index[i], 1);
 547           forwards = true;
 548         }
 549
 550       if (ar->end[i])
 551         cmp = mpz_cmp (section_index[i], ar->end[i]->value.integer);
 552       else
 553         cmp = mpz_cmp (section_index[i], ar->as->upper[i]->value.integer);
 554
 555       if ((cmp > 0 && forwards) || (cmp < 0 && !forwards))
 556         {
 557           /* Reset index to start, then loop to advance the next index.  */
 558           if (ar->start[i])
 559             mpz_set (section_index[i], ar->start[i]->value.integer);
 560           else
 561             mpz_set (section_index[i], ar->as->lower[i]->value.integer);
 562         }
 563       else
 564         break;
 565     }
 566
 567   mpz_set_si (*offset_ret, 0);
 568   mpz_init_set_si (delta, 1);
 569   mpz_init (tmp);
 570   for (i = 0; i < ar->dimen; i++)
 571     {
 572       mpz_sub (tmp, section_index[i], ar->as->lower[i]->value.integer);
 573       mpz_mul (tmp, tmp, delta);
 574       mpz_add (*offset_ret, tmp, *offset_ret);
 575
 576       mpz_sub (tmp, ar->as->upper[i]->value.integer,
 577                ar->as->lower[i]->value.integer);
 578       mpz_add_ui (tmp, tmp, 1);
 579       mpz_mul (delta, tmp, delta);
 580     }
 581   mpz_clear (tmp);
 582   mpz_clear (delta);
 583 }
 584
 585
 586 /* Rearrange a structure constructor so the elements are in the specified
 587    order.  Also insert NULL entries if necessary.  */
 588
 589 static void
 590 formalize_structure_cons (gfc_expr *expr)
 591 {
 592   gfc_constructor_base base = NULL;
 593   gfc_constructor *cur;
 594   gfc_component *order;
 595
 596   /* Constructor is already formalized.  */
 597   cur = gfc_constructor_first (expr->value.constructor);
 598   if (!cur || cur->n.component == NULL)
 599     return;
 600
 601   for (order = expr->ts.u.derived->components; order; order = order->next)
 602     {
 603       cur = find_con_by_component (order, expr->value.constructor);
 604       if (cur)
 605         gfc_constructor_append_expr (&base, cur->expr, &cur->expr->where);
 606       else
 607         gfc_constructor_append_expr (&base, NULL, NULL);
 608     }
 609
 610   /* For all what it's worth, one would expect
 611        gfc_constructor_free (expr->value.constructor);
 612      here. However, if the constructor is actually free'd,
 613      hell breaks loose in the testsuite?!  */
 614
 615   expr->value.constructor = base;
 616 }
 617
 618
 619 /* Make sure an initialization expression is in normalized form, i.e., all
 620    elements of the constructors are in the correct order.  */
 621
 622 static void
 623 formalize_init_expr (gfc_expr *expr)
 624 {
 625   expr_t type;
 626   gfc_constructor *c;
 627
 628   if (expr == NULL)
 629     return;
 630
 631   type = expr->expr_type;
 632   switch (type)
 633     {
 634     case EXPR_ARRAY:
 635       for (c = gfc_constructor_first (expr->value.constructor);
 636            c; c = gfc_constructor_next (c))
 637         formalize_init_expr (c->expr);
 638
 639     break;
 640
 641     case EXPR_STRUCTURE:
 642       formalize_structure_cons (expr);
 643       break;
 644
 645     default:
 646       break;
 647     }
 648 }
 649
 650
 651 /* Resolve symbol's initial value after all data statement.  */
 652
 653 void
 654 gfc_formalize_init_value (gfc_symbol *sym)
 655 {
 656   formalize_init_expr (sym->value);
 657 }
 658
 659
 660 /* Get the integer value into RET_AS and SECTION from AS and AR, and return
 661    offset.  */
 662
 663 void
 664 gfc_get_section_index (gfc_array_ref *ar, mpz_t *section_index, mpz_t *offset)
 665 {
 666   int i;
 667   mpz_t delta;
 668   mpz_t tmp;
 669
 670   mpz_set_si (*offset, 0);
 671   mpz_init (tmp);
 672   mpz_init_set_si (delta, 1);
 673   for (i = 0; i < ar->dimen; i++)
 674     {
 675       mpz_init (section_index[i]);
 676       switch (ar->dimen_type[i])
 677         {
 678         case DIMEN_ELEMENT:
 679         case DIMEN_RANGE:
 680           if (ar->start[i])
 681             {
 682               mpz_sub (tmp, ar->start[i]->value.integer,
 683                        ar->as->lower[i]->value.integer);
 684               mpz_mul (tmp, tmp, delta);
 685               mpz_add (*offset, tmp, *offset);
 686               mpz_set (section_index[i], ar->start[i]->value.integer);
 687             }
 688           else
 689               mpz_set (section_index[i], ar->as->lower[i]->value.integer);
 690           break;
 691
 692         case DIMEN_VECTOR:
 693           gfc_internal_error ("TODO: Vector sections in data statements");
 694
 695         default:
 696           gcc_unreachable ();
 697         }
 698
 699       mpz_sub (tmp, ar->as->upper[i]->value.integer,
 700                ar->as->lower[i]->value.integer);
 701       mpz_add_ui (tmp, tmp, 1);
 702       mpz_mul (delta, tmp, delta);
 703     }
 704
 705   mpz_clear (tmp);
 706   mpz_clear (delta);
 707 }
 708