add onnx model parse api

parser/onnx/onnx_parser.cc

@@ -41,7 +41,7 @@
 namespace ge {
 graphStatus PrepareBeforeParse(AclGrphParseUtil &acl_graph_parse_util,
                                const std::map<AscendString, AscendString> &parser_params,
-                               ge::Graph &graph, domi::ModelParser *model_parser) {
+                               ge::Graph &graph, std::shared_ptr<domi::ModelParser> model_parser) {
   GetParserContext().type = domi::ONNX;
   std::map<string, string> options;
   options.insert(std::pair<string, string>(string(ge::FRAMEWORK_TYPE), to_string(ge::ONNX)));
@@ -83,7 +83,7 @@ graphStatus aclgrphParseONNX(const char *model_file,
   GE_CHECK_NOTNULL(model_file);
   // load custom plugin so and proto
   AclGrphParseUtil acl_graph_parse_util;
-  domi::ModelParser *model_parser = nullptr;
+  std::shared_ptr<domi::ModelParser> model_parser;
 
   if (PrepareBeforeParse(acl_graph_parse_util, parser_params, graph, model_parser)  != ge::SUCCESS) {
     GELOGE(ge::FAILED, "prepare before parse failed.");
@@ -113,7 +113,7 @@ graphStatus aclgrphParseONNXFromMem(const char *buffer, size_t size,
   GE_CHECK_NOTNULL(buffer);
   // load custom plugin so and proto
   AclGrphParseUtil acl_graph_parse_util;
-  domi::ModelParser *model_parser = nullptr;
+  std::shared_ptr<domi::ModelParser> model_parser;
 
   if (PrepareBeforeParse(acl_graph_parse_util, parser_params, graph, model_parser)  != ge::SUCCESS) {
     GELOGE(ge::FAILED, "prepare before parse failed.");