1 files changed, 50 insertions, 0 deletions
diff --git a/src/sexp-depth-manager.cpp b/src/sexp-depth-manager.cpp
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+++ b/src/sexp-depth-manager.cpp
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+/**
+ *
+ * Copyright 2023 Ribose Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **/
+
+#include "sexpp/sexp.h"
+
+namespace sexp {
+
+sexp_depth_manager::sexp_depth_manager(size_t m_depth)
+{
+    reset_depth(m_depth);
+}
+void sexp_depth_manager::reset_depth(size_t m_depth)
+{
+    depth = 0;
+    max_depth = m_depth;
+}
+void sexp_depth_manager::increase_depth(int count)
+{
+    if (max_depth != 0 && ++depth > max_depth)
+        sexp_error(sexp_exception_t::error,
+                   "Maximum allowed SEXP list depth (%u) is exceeded",
+                   max_depth,
+                   0,
+                   count);
+}
+void sexp_depth_manager::decrease_depth(void)
+{
+    depth--;
+}
+} // namespace sexp