+#ifdef DEBUGGING
+
+STATIC void
+S_put_byte(pTHX_ SV *sv, int c)
+{
+ if (isCNTRL(c) || c == 255 || !isPRINT(c))
+ Perl_sv_catpvf(aTHX_ sv, "\\%o", c);
+ else if (c == '-' || c == ']' || c == '\\' || c == '^')
+ Perl_sv_catpvf(aTHX_ sv, "\\%c", c);
+ else
+ Perl_sv_catpvf(aTHX_ sv, "%c", c);
+}
+
+
+STATIC regnode *
+S_dumpuntil(pTHX_ regnode *start, regnode *node, regnode *last, SV* sv, I32 l)
+{
+ register U8 op = EXACT; /* Arbitrary non-END op. */
+ register regnode *next;
+
+ while (op != END && (!last || node < last)) {
+ /* While that wasn't END last time... */
+
+ NODE_ALIGN(node);
+ op = OP(node);
+ if (op == CLOSE)
+ l--;
+ next = regnext(node);
+ /* Where, what. */
+ if (OP(node) == OPTIMIZED)
+ goto after_print;
+ regprop(sv, node);
+ PerlIO_printf(Perl_debug_log, "%4"IVdf":%*s%s", (IV)(node - start),
+ (int)(2*l + 1), "", SvPVX_const(sv));
+ if (next == NULL) /* Next ptr. */
+ PerlIO_printf(Perl_debug_log, "(0)");
+ else
+ PerlIO_printf(Perl_debug_log, "(%"IVdf")", (IV)(next - start));
+ (void)PerlIO_putc(Perl_debug_log, '\n');
+ after_print:
+ if (PL_regkind[(U8)op] == BRANCHJ) {
+ register regnode *nnode = (OP(next) == LONGJMP
+ ? regnext(next)
+ : next);
+ if (last && nnode > last)
+ nnode = last;
+ node = dumpuntil(start, NEXTOPER(NEXTOPER(node)), nnode, sv, l + 1);
+ }
+ else if (PL_regkind[(U8)op] == BRANCH) {
+ node = dumpuntil(start, NEXTOPER(node), next, sv, l + 1);
+ }
+ else if ( op == CURLY) { /* "next" might be very big: optimizer */
+ node = dumpuntil(start, NEXTOPER(node) + EXTRA_STEP_2ARGS,
+ NEXTOPER(node) + EXTRA_STEP_2ARGS + 1, sv, l + 1);
+ }
+ else if (PL_regkind[(U8)op] == CURLY && op != CURLYX) {
+ node = dumpuntil(start, NEXTOPER(node) + EXTRA_STEP_2ARGS,
+ next, sv, l + 1);
+ }
+ else if ( op == PLUS || op == STAR) {
+ node = dumpuntil(start, NEXTOPER(node), NEXTOPER(node) + 1, sv, l + 1);
+ }
+ else if (op == ANYOF) {
+ /* arglen 1 + class block */
+ node += 1 + ((ANYOF_FLAGS(node) & ANYOF_LARGE)
+ ? ANYOF_CLASS_SKIP : ANYOF_SKIP);
+ node = NEXTOPER(node);
+ }
+ else if (PL_regkind[(U8)op] == EXACT) {
+ /* Literal string, where present. */
+ node += NODE_SZ_STR(node) - 1;
+ node = NEXTOPER(node);
+ }
+ else {
+ node = NEXTOPER(node);
+ node += regarglen[(U8)op];
+ }
+ if (op == CURLYX || op == OPEN)
+ l++;
+ else if (op == WHILEM)
+ l--;
+ }
+ return node;
+}
+
+#endif /* DEBUGGING */
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */