From f9444f3dbf9c64c1d28cd5102bc756a52507f989 Mon Sep 17 00:00:00 2001
From: coffee <catheadcoffee@gmail.com>
Date: Thu, 3 Apr 2025 10:48:36 +0800
Subject: [PATCH] =?UTF-8?q?1.=20=E5=A2=9E=E5=8A=A0=E8=8E=B7=E5=8F=96?=
 =?UTF-8?q?=E6=A0=88=E6=8C=87=E5=AE=9A=E4=BD=8D=E7=BD=AE=E7=9A=84=E6=95=B0?=
 =?UTF-8?q?=E6=8D=AE?=
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---
 include/HByteStack.h | 3 +++
 src/HByteStack.c     | 9 +++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/HByteStack.h b/include/HByteStack.h
index d91acdd..9c381de 100644
--- a/include/HByteStack.h
+++ b/include/HByteStack.h
@@ -107,6 +107,9 @@ HByteDataType HByteStackPop(HByteType *stackData);
 // 返回栈顶数据, 失败返回 HBYTE_STACK_ERROR
 HByteDataType HByteStackTop(const HByteType *stackData);
 
+// 返回指定位置数据, 失败返回 HBYTE_STACK_ERROR
+HByteDataType HByteStackGetPos(const HByteType *stackData, HByteLenType pos);
+
 // 返回栈长度
 HByteLenType HByteStackLen(const HByteType *stackData);
 
diff --git a/src/HByteStack.c b/src/HByteStack.c
index 104eae0..899cfa6 100644
--- a/src/HByteStack.c
+++ b/src/HByteStack.c
@@ -113,6 +113,15 @@ HByteDataType HByteStackTop(const HByteType *stackData) {
     return GetStackData(stackData, GetStackUseLen(stackData) - 1);
 }
 
+// 返回指定位置数据, 失败返回 HBYTE_STACK_ERROR
+HByteDataType HByteStackGetPos(const HByteType *stackData, HByteLenType pos) {
+    if (pos >= GetStackUseLen(stackData)) {
+        return HBYTE_STACK_ERROR;
+    }
+
+    return GetStackData(stackData, pos);
+}
+
 HByteLenType HByteStackLen(const HByteType *stackData) {
     return GetStackLen(stackData);
 }