Merge pull request #8529 from The-OpenROAD-Project-staging/ram-misc

ram: add Python wrapper and fix a few Coverity uninit_ctor

Author: maliberty

src/ram/CMakeLists.txt

@@ -62,21 +62,21 @@ messages(
   TARGET ram
 )
 
-#if (Python3_FOUND AND BUILD_PYTHON)
-#  swig_lib(NAME          ram_py
-#           NAMESPACE     ram
-#           LANGUAGE      python
-#           I_FILE        src/ram-py.i
-#           SWIG_INCLUDES ${PROJECT_SOURCE_DIR}/include/ram
-#           SCRIPTS       ${CMAKE_CURRENT_BINARY_DIR}/ram_py.py
-#  )
-#
-#  target_link_libraries(ram_py
-#    PUBLIC
-#      ram
-#      odb
-#  )
-#
-#endif()
+if (Python3_FOUND AND BUILD_PYTHON)
+  swig_lib(NAME          ram_py
+           NAMESPACE     ram
+           LANGUAGE      python
+           I_FILE        src/ram-py.i
+           SWIG_INCLUDES ${PROJECT_SOURCE_DIR}/include/ram
+           SCRIPTS       ${CMAKE_CURRENT_BINARY_DIR}/ram_py.py
+  )
+
+  target_link_libraries(ram_py
+    PUBLIC
+      ram
+      odb
+  )
+
+endif()
 
 add_subdirectory(test)

src/ram/include/ram/ram.h

@@ -90,15 +90,15 @@ class RamGen
 
   sta::dbNetwork* network_;
   odb::dbDatabase* db_;
-  odb::dbBlock* block_;
+  odb::dbBlock* block_{nullptr};
   Logger* logger_;
 
-  odb::dbMaster* storage_cell_;
-  odb::dbMaster* tristate_cell_;
-  odb::dbMaster* inv_cell_;
-  odb::dbMaster* and2_cell_;
-  odb::dbMaster* clock_gate_cell_;
-  odb::dbMaster* buffer_cell_;
+  odb::dbMaster* storage_cell_{nullptr};
+  odb::dbMaster* tristate_cell_{nullptr};
+  odb::dbMaster* inv_cell_{nullptr};
+  odb::dbMaster* and2_cell_{nullptr};
+  odb::dbMaster* clock_gate_cell_{nullptr};
+  odb::dbMaster* buffer_cell_{nullptr};
 };
 
 }  // namespace ram

src/ram/src/ram-py.i

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// Copyright (c) 2022-2025, The OpenROAD Authors
+
+%{
+#include "ord/OpenRoad.hh"
+#include "ram/ram.h"
+
+%}
+
+%include "../../Exception-py.i"
+%include "ram/ram.h"