+2002-02-12 Ben Elliston <bje@redhat.com>
+
+ * NEWS: Document floating point number handling in gasp.
+ * gasp.c: Include <assert.h> and "xregex.h".
+ (is_flonum): New function.
+ (chew_flownum): Likewise.
+ (change_base): Consume flonums from the input, where possible.
+ * doc/gasp.texi (Constants): Document floating point numbers.
+
2002-02-12 John David Anglin <dave@hiauly1.hia.nrc.ca>
* config/tc-hppa.c (hppa_fix_adjustable): Don't adjust final types
base 2, @samp{Q} for base 8, @samp{D} for base 10, and @samp{H} for base
16. (You can write this character in lower case if you prefer.)
+You can write floating point constants using the same syntax recognised
+by GAS @ref{Flonums,,Flonums,as,The GNU Assembler.}. A constraint is
+that these constants will be interpreted as decimal values irrespective
+of the currently selected base.
+
@c FIXME! What are rules for recognizing number in deflt base? Whatever
@c is left over after parsing other things??
#include "config.h"
#include "bin-bugs.h"
+#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <getopt.h>
#include "sb.h"
#include "macro.h"
#include "asintl.h"
+#include "xregex.h"
char *program_version = "1.2";
static void hash_add_to_int_table PARAMS ((hash_table *, sb *, int));
static hash_entry *hash_lookup PARAMS ((hash_table *, sb *));
static void checkconst PARAMS ((int, exp_t *));
+static int is_flonum PARAMS ((int, sb *));
+static int chew_flonum PARAMS ((int, sb *, sb *));
static int sb_strtol PARAMS ((int, sb *, int, int *));
static int level_0 PARAMS ((int, sb *, exp_t *));
static int level_1 PARAMS ((int, sb *, exp_t *));
}
}
+/* Chew the flonum from the string starting at idx. Adjust idx to
+ point to the next character after the flonum. */
+
+static int
+chew_flonum (idx, string, out)
+ int idx;
+ sb *string;
+ sb *out;
+{
+ sb buf;
+ regex_t reg;
+ regmatch_t match;
+
+ /* Duplicate and null terminate `string'. */
+ sb_new (&buf);
+ sb_add_sb (&buf, string);
+ sb_add_char (&buf, '\0');
+
+ if (regcomp (®, "([0-9]*\\.[0-9]+([eE][+-]?[0-9]+)?)", REG_EXTENDED) != 0)
+ return idx;
+ if (regexec (®, &buf.ptr[idx], 1, &match, 0) != 0)
+ return idx;
+
+ /* Copy the match to the output. */
+ assert (match.rm_eo >= match.rm_so);
+ sb_add_buffer (out, &buf.ptr[idx], match.rm_eo - match.rm_so);
+
+ sb_kill (&buf);
+ regfree (®);
+ idx += match.rm_eo;
+ return idx;
+}
+
+static int
+is_flonum (idx, string)
+ int idx;
+ sb *string;
+{
+ sb buf;
+ regex_t reg;
+ int rc;
+
+ /* Duplicate and null terminate `string'. */
+ sb_new (&buf);
+ sb_add_sb (&buf, string);
+ sb_add_char (&buf, '\0');
+
+ if (regcomp (®, "^[0-9]*\\.[0-9]+([eE][+-]?[0-9]+)?", REG_EXTENDED) != 0)
+ return 0;
+
+ rc = regexec (®, &buf.ptr[idx], 0, NULL, 0);
+ sb_kill (&buf);
+ regfree (®);
+ return (rc == 0);
+}
+
/* Turn the number in string at idx into a number of base, fill in
ptr, and return the index of the first character not in the number. */
idx++;
}
}
+ else if (is_flonum (idx, in))
+ {
+ idx = chew_flonum (idx, in, out);
+ }
else if (ISDIGIT (in->ptr[idx]))
{
int value;