From 4b38895a30d05be4758f1e348dd64a2275cab1f4 Mon Sep 17 00:00:00 2001
From: Matteo Di Giovinazzo <matteodg@gmail.com>
Date: Sun, 19 Apr 2020 19:57:19 -0600
Subject: [PATCH] #391 Add Indexer.slice() method to create a new Indexer using
 the same backing array/buffer/pointer

---
 src/main/java/org/bytedeco/javacpp/indexer/Indexer.java | 7 +++++++
 src/test/java/org/bytedeco/javacpp/IndexerTest.java     | 1 +
 2 files changed, 8 insertions(+)

diff --git a/src/main/java/org/bytedeco/javacpp/indexer/Indexer.java b/src/main/java/org/bytedeco/javacpp/indexer/Indexer.java
index d3ad0503a..a0ec57ab5 100644
--- a/src/main/java/org/bytedeco/javacpp/indexer/Indexer.java
+++ b/src/main/java/org/bytedeco/javacpp/indexer/Indexer.java
@@ -161,6 +161,13 @@ public long index(long... indices) {
     /** Casts value to primitive type and calls {@code put(long[] indices, <type> value)}. */
     public abstract Indexer putDouble(long[] indices, double value);
 
+    /**
+     * TODO
+     * @param index
+     * @return 
+     */
+    public abstract Indexer slice(Index index);
+
     @Override public String toString() {
         long rows     = sizes.length > 0 ? sizes[0] : 1,
              cols     = sizes.length > 1 ? sizes[1] : 1,
diff --git a/src/test/java/org/bytedeco/javacpp/IndexerTest.java b/src/test/java/org/bytedeco/javacpp/IndexerTest.java
index b300dada0..3e208297f 100644
--- a/src/test/java/org/bytedeco/javacpp/IndexerTest.java
+++ b/src/test/java/org/bytedeco/javacpp/IndexerTest.java
@@ -83,6 +83,7 @@ static class TestIndexer extends Indexer {
         public void release() { }
         public double getDouble(long... indices) { return 0; }
         public Indexer putDouble(long[] indices, double value) { return this; }
+        public Indexer slice(Index index) { return new TestIndexer(index); }
     }
 
     @Test public void testDefaultStrides() {