From d349b10d84d6b417171e9af3c5ae85691df4f9ff Mon Sep 17 00:00:00 2001
From: Zsombor Gegesy <gzsombor@gmail.com>
Date: Wed, 15 May 2024 22:28:41 +0200
Subject: [PATCH] Implement Objects.checkFromIndexSize

---
 src/main/java/com/github/luben/zstd/Objects.java    | 13 +++++++++++++
 .../java/com/github/luben/zstd/ZstdCompressCtx.java |  1 -
 .../com/github/luben/zstd/ZstdDecompressCtx.java    |  1 -
 3 files changed, 13 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/com/github/luben/zstd/Objects.java

diff --git a/src/main/java/com/github/luben/zstd/Objects.java b/src/main/java/com/github/luben/zstd/Objects.java
new file mode 100644
index 0000000..482fec3
--- /dev/null
+++ b/src/main/java/com/github/luben/zstd/Objects.java
@@ -0,0 +1,13 @@
+package com.github.luben.zstd;
+
+final class Objects {
+
+    /**
+     * Checks constraints, that the fromIndex, size, length is not negative, and fromIndex + size is not greater than the size. 
+     */
+    static void checkFromIndexSize(int fromIndex, int size, int length) {
+        if ((length | fromIndex | size) < 0 || size > length - fromIndex) {
+            throw new IndexOutOfBoundsException(String.format("Range [%s, %<s + %s) out of bounds for length %s", fromIndex, size, length));
+        }
+    }
+}
diff --git a/src/main/java/com/github/luben/zstd/ZstdCompressCtx.java b/src/main/java/com/github/luben/zstd/ZstdCompressCtx.java
index 5ca6aba..e8187aa 100644
--- a/src/main/java/com/github/luben/zstd/ZstdCompressCtx.java
+++ b/src/main/java/com/github/luben/zstd/ZstdCompressCtx.java
@@ -5,7 +5,6 @@
 
 import java.nio.ByteBuffer;
 import java.util.Arrays;
-import java.util.Objects;
 
 public class ZstdCompressCtx extends AutoCloseBase {
 
diff --git a/src/main/java/com/github/luben/zstd/ZstdDecompressCtx.java b/src/main/java/com/github/luben/zstd/ZstdDecompressCtx.java
index aed1317..6235b86 100644
--- a/src/main/java/com/github/luben/zstd/ZstdDecompressCtx.java
+++ b/src/main/java/com/github/luben/zstd/ZstdDecompressCtx.java
@@ -5,7 +5,6 @@
 
 import java.nio.ByteBuffer;
 import java.util.Arrays;
-import java.util.Objects;
 
 public class ZstdDecompressCtx extends AutoCloseBase {