update github.com/mennanov/fieldmask-utils@v0.3.3

slim down cofig

ocis-pkg/indexer/query_tree.go

@@ -0,0 +1,40 @@
+package indexer
+
+type queryTree struct {
+	token *token
+	root  bool
+	left  *queryTree
+	right *queryTree
+}
+
+// token to be resolved by the index
+type token struct {
+	operator   string // original OData operator. i.e: 'startswith', `or`, `and`.
+	filterType string // equivalent operator from OData -> indexer i.e FindByPartial or FindBy.
+	operands   []string
+}
+
+// newQueryTree constructs a new tree with a root node.
+func newQueryTree() queryTree {
+	return queryTree{
+		root: true,
+	}
+}
+
+// insert populates first the LHS of the tree first, if this is not possible it fills the RHS.
+func (t *queryTree) insert(tkn *token) {
+	if t != nil && t.root {
+		t.left = &queryTree{token: tkn}
+		return
+	}
+
+	if t.left == nil {
+		t.left = &queryTree{token: tkn}
+		return
+	}
+
+	if t.left != nil && t.right == nil {
+		t.right = &queryTree{token: tkn}
+		return
+	}
+}