1 files changed, 40 insertions, 0 deletions
diff --git a/commitquery/query_resolve_graph_pos.go b/commitquery/query_resolve_graph_pos.go
new file mode 100644
index 00000000..dce8fc22
--- /dev/null
+++ b/commitquery/query_resolve_graph_pos.go
@@ -0,0 +1,40 @@
+package commitquery
+
+import commitgraphread "codeberg.org/lindenii/furgit/format/commitgraph/read"
+
+// resolveGraphPos resolves one commit-graph position to one internal query node.
+func (query *query) resolveGraphPos(pos commitgraphread.Position) (nodeIndex, error) {
+	idx, ok := query.byGraphPos[pos]
+	if ok {
+		err := query.ensureLoaded(idx)
+		if err != nil {
+			return 0, err
+		}
+
+		return idx, nil
+	}
+
+	commit, err := query.graph.CommitAt(pos)
+	if err != nil {
+		return 0, err
+	}
+
+	idx, ok = query.byOID[commit.OID]
+	if !ok {
+		idx = query.newNode(commit.OID)
+		query.byOID[commit.OID] = idx
+	}
+
+	query.byGraphPos[pos] = idx
+	query.nodes[idx].graphPos = pos
+	query.nodes[idx].hasGraphPos = true
+
+	err = query.loadCommitAtGraphPos(idx, pos)
+	if err != nil {
+		delete(query.byGraphPos, pos)
+
+		return 0, err
+	}
+
+	return idx, nil
+}