Add list_clear() function

Author: adazem009

src/scratch/CMakeLists.txt

@@ -14,6 +14,8 @@ target_sources(scratchcpp
     list.cpp
     list_p.cpp
     list_p.h
+    list_functions.cpp
+    list_functions.h
     block.cpp
     block_p.cpp
     block_p.h

src/scratch/list_functions.cpp

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#include <scratchcpp/list.h>
+
+#include "list_functions.h"
+
+using namespace libscratchcpp;
+
+extern "C"
+{
+    void list_clear(List *list)
+    {
+        list->clear();
+    }
+}

src/scratch/list_functions.h

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+namespace libscratchcpp
+{
+
+class List;
+
+extern "C"
+{
+    void list_clear(List *list);
+}
+
+} // namespace libscratchcpp

test/scratch_classes/CMakeLists.txt

@@ -16,6 +16,7 @@ gtest_discover_tests(blockprototype_test)
 add_executable(
   list_test
   list_test.cpp
+  list_functions_test.cpp
 )
 
 target_link_libraries(

test/scratch_classes/list_functions_test.cpp

@@ -0,0 +1,16 @@
+#include <scratchcpp/list.h>
+#include <scratch/list_functions.h>
+
+#include <gtest/gtest.h>
+
+using namespace libscratchcpp;
+
+TEST(ListFunctionsTest, Clear)
+{
+    List list("", "");
+    list.append(1);
+    list.append(2);
+    list.append(3);
+
+    list_clear(&list);
+}