Better parsing of the rules

Thanks to this huge commit from @xXx-caillou-xXx, we can now write amazingly flexible rules.

1 files changed, 20 insertions, 0 deletions

diff --git a/src/sp_tree.c b/src/sp_tree.c
new file mode 100644
index 0000000..328a919
--- /dev/null
+++ b/src/sp_tree.c
@@ -0,0 +1,20 @@
+#include "php_snuffleupagus.h"
+
+void sp_tree_free(sp_tree *tree) {
+  while (tree) {
+    sp_tree *tmp;
+    pefree(tree->value, 1);
+    sp_tree_free(tree->idx);
+    tmp = tree;
+    tree = tree->next;
+    pefree(tmp, 1);
+  }
+}
+
+sp_tree *sp_tree_new() {
+  sp_tree *new = pecalloc(sizeof(sp_tree), 1, 1);
+  new->next = new->idx = NULL;
+  new->value = NULL;
+  new->type = 0;
+  return new;
+}