Add UNSHIFT to Perl tied arrays

diff --git a/src/modules/rlm_perl/rlm_perl.c b/src/modules/rlm_perl/rlm_perl.c
index 2af5dab533b549dd6dc6ff03e63c115072ab35d9..6aa2838c1c401db01d7c499315d736361f3bbbd8 100644 (file)
--- a/src/modules/rlm_perl/rlm_perl.c
+++ b/src/modules/rlm_perl/rlm_perl.c
@@ -992,6 +992,36 @@ static XS(XS_pairs_SHIFT)
        XSRETURN(1);
 }
 
+/** Called when values are "unshifted" onto a tied array
+ *
+ * The stack contains
+ *  - the tied SV
+ *  - one or more values being shifted onto the array
+ */
+static XS(XS_pairs_UNSHIFT)
+{
+       dXSARGS;
+       int             i = 1;
+       fr_pair_t       *vp;
+       fr_perl_pair_t  *parent;
+
+       GET_PAIR_MAGIC(2)
+
+       fr_assert(fr_type_is_leaf(pair_data->da->type));
+
+       parent = pair_data->parent;
+       if (!parent->vp) {
+               if (fr_perl_pair_parent_build(parent) < 0) XSRETURN(0);
+       }
+
+       while (i < items) {
+               fr_pair_prepend_by_da(parent->vp, &vp, &parent->vp->vp_group, pair_data->da);
+               if (perl_value_unmarshal(vp, ST(i++)) < 0) break;
+       }
+
+       XSRETURN(0);
+}
+
 static void xs_init(pTHX)
 {
        char const *file = __FILE__;
@@ -1026,6 +1056,7 @@ static void xs_init(pTHX)
        newXS("freeradiuspairs::PUSH", XS_pairs_PUSH, "rlm_perl");
        newXS("freeradiuspairs::POP", XS_pairs_POP, "rlm_perl");
        newXS("freeradiuspairs::SHIFT", XS_pairs_SHIFT, "rlm_perl");
+       newXS("freeradiuspairs::UNSHIFT", XS_pairs_UNSHIFT, "rlm_perl");
 }
 
 /** Convert a list of value boxes to a Perl array for passing to subroutines