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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#include <config.h>
-#include <assert.h>
+#include "error.h"
#include "alloc.h"
+#include "case.h"
#include "command.h"
+#include "dictionary.h"
#include "do-ifP.h"
#include "error.h"
-#include "expr.h"
+#include "expressions/public.h"
#include "lexer.h"
#include "misc.h"
#include "settings.h"
internal_cmd_loop (void)
{
/* Name of indexing variable if applicable. */
- char name[9];
-
- lex_match_id ("LOOP");
+ char name[LONG_NAME_LEN + 1];
/* Create and initialize transformations to facilitate
error-handling. */
assert (token == '=');
lex_get ();
- one->init = expr_parse (PXP_NUMERIC);
+ one->init = expr_parse (default_dict, EXPR_NUMBER);
if (!one->init)
return 0;
expr_free (one->init);
return 0;
}
- one->term = expr_parse (PXP_NUMERIC);
+ one->term = expr_parse (default_dict, EXPR_NUMBER);
if (!one->term)
{
expr_free (one->init);
if (lex_match (T_BY))
{
- one->incr = expr_parse (PXP_NUMERIC);
+ one->incr = expr_parse (default_dict, EXPR_NUMBER);
if (!one->incr)
return 0;
}
}
else
- name[0] = 0;
+ name[0] = '\0';
/* Parse IF clause. */
if (lex_match_id ("IF"))
{
two->flags |= LPC_COND;
- two->cond = expr_parse (PXP_BOOLEAN);
+ two->cond = expr_parse (default_dict, EXPR_BOOLEAN);
if (!two->cond)
return 0;
}
}
/* Find variable; create if necessary. */
- if (name[0])
+ if (name[0] != '\0')
{
two->index = dict_lookup_var (default_dict, name);
if (!two->index)
add_transformation ((struct trns_header *) one);
add_transformation ((struct trns_header *) two);
-#if DEBUGGING
- printf ("LOOP");
- if (two->flags & LPC_INDEX)
- printf ("(INDEX)");
- if (two->flags & LPC_COND)
- printf ("(IF)");
- printf ("\n");
-#endif
-
return 1;
}
/* Parse the expression if any. */
if (lex_match_id ("IF"))
{
- thr->cond = expr_parse (PXP_BOOLEAN);
+ thr->cond = expr_parse (default_dict, EXPR_BOOLEAN);
if (!thr->cond)
return 0;
}
/* Pop off the top of stack. */
ctl_stack = ctl_stack->down;
-#if DEBUGGING
- printf ("END LOOP");
- if (thr->cond)
- printf ("(IF)");
- printf ("\n");
-#endif
-
return 1;
}
two->pass = -1;
if (two->flags & LPC_INDEX)
{
- union value t1, t2, t3;
+ double t1, t2, t3;
- expr_evaluate (one->init, c, case_num, &t1);
+ t1 = expr_evaluate_num (one->init, c, case_num);
if (one->incr)
- expr_evaluate (one->incr, c, case_num, &t2);
+ t2 = expr_evaluate_num (one->incr, c, case_num);
else
- t2.f = 1.0;
- expr_evaluate (one->term, c, case_num, &t3);
+ t2 = 1.0;
+ t3 = expr_evaluate_num (one->term, c, case_num);
/* Even if the loop is never entered, force the index variable
to assume the initial value. */
- c->data[two->index->fv].f = t1.f;
+ case_data_rw (c, two->index->fv)->f = t1;
/* Throw out various pathological cases. */
- if (!finite (t1.f) || !finite (t2.f) || !finite (t3.f) || t2.f == 0.0)
+ if (!finite (t1) || !finite (t2) || !finite (t3) || t2 == 0.0)
return two->loop_term;
debug_printf (("LOOP %s=%g TO %g BY %g.\n", two->index->name,
- t1.f, t3.f, t2.f));
- if (t2.f > 0.0)
+ t1, t3, t2));
+ if (t2 > 0.0)
{
/* Loop counts upward: I=1 TO 5 BY 1. */
two->flags &= ~LPC_RINDEX;
/* incr>0 but init>term */
- if (t1.f > t3.f)
+ if (t1 > t3)
return two->loop_term;
}
else
two->flags |= LPC_RINDEX;
/* incr<0 but init<term */
- if (t1.f < t3.f)
+ if (t1 < t3)
return two->loop_term;
}
- two->curr = t1.f;
- two->incr = t2.f;
- two->term = t3.f;
+ two->curr = t1;
+ two->incr = t2;
+ two->term = t3;
}
return -1;
return two->loop_term;
/* Set the current value into the case. */
- c->data[two->index->fv].f = two->curr;
+ case_data_rw (c, two->index->fv)->f = two->curr;
/* Decrement the current value. */
two->curr += two->incr;
return two->loop_term;
/* Set the current value into the case. */
- c->data[two->index->fv].f = two->curr;
+ case_data_rw (c, two->index->fv)->f = two->curr;
/* Increment the current value. */
two->curr += two->incr;
/* Conditional clause limiter. */
if ((two->flags & LPC_COND)
- && expr_evaluate (two->cond, c, case_num, NULL) != 1.0)
+ && expr_evaluate_num (two->cond, c, case_num) != 1.0)
return two->loop_term;
return -1;
/* Note that it breaks out of the loop if the expression is true *or
missing*. This is conformant. */
- if (thr->cond && expr_evaluate (two->cond, c, case_num, NULL) != 0.0)
+ if (thr->cond && expr_evaluate_num (two->cond, c, case_num) != 0.0)
return -1;
return thr->loop_start;
/* New transformation. */
struct break_trns *t;
- lex_match_id ("BREAK");
-
for (loop = ctl_stack; loop; loop = loop->down)
if (loop->type == CST_LOOP)
break;