JSONXSL plugin error

Hi,

I am getting below error when trying convert YANG models to XSL schema.

Pyang version: 2.3.2

Command: pyang --lax-quote-checks -f jsonxsl files/*.yang -o yang.xsl

Error

Traceback (most recent call last):
  File "/usr/local/bin/pyang", line 533, in <module>
    run()
  File "/usr/local/bin/pyang", line 502, in run
    emit_obj.emit(ctx, modules, fd)
  File "/usr/local/lib/python3.6/site-packages/pyang/plugins/jsonxsl.py", line 93, in emit
    self.process_module(module)
  File "/usr/local/lib/python3.6/site-packages/pyang/plugins/jsonxsl.py", line 113, in process_module
    self.process_children(yam, "//nc:*", 1)
  File "/usr/local/lib/python3.6/site-packages/pyang/plugins/jsonxsl.py", line 170, in process_children
    self.process_children(ch, p, level + offset)
  File "/usr/local/lib/python3.6/site-packages/pyang/plugins/jsonxsl.py", line 170, in process_children
    self.process_children(ch, p, level + offset)
  File "/usr/local/lib/python3.6/site-packages/pyang/plugins/jsonxsl.py", line 170, in process_children
    self.process_children(ch, p, level + offset)
  [Previous line repeated 1 more time]
  File "/usr/local/lib/python3.6/site-packages/pyang/plugins/jsonxsl.py", line 167, in process_children
    self.type_param(ch, ct)
  File "/usr/local/lib/python3.6/site-packages/pyang/plugins/jsonxsl.py", line 175, in type_param
    types = self.get_types(node)
  File "/usr/local/lib/python3.6/site-packages/pyang/plugins/jsonxsl.py", line 219, in get_types
    resolve(node.i_leafref_ptr[0].search_one("type"))
TypeError: 'NoneType' object is not subscriptable	

I was also able to overcome the above error by adding simple check like below in jsonxsl.py function get_types

# if typ.arg == "leafref":
if typ.arg == "leafref" and node.i_leafref_ptr is not None:
    resolve(node.i_leafref_ptr[0].search_one("type"))
else:
    resolve(typ)

I am not sure if its a bug or intended functionality but with above changes XSL schema gets generated followed by JSON file.

Can anyone please confirm what should be done for this issue?

[fredgan]

@rawat-he Hi, I do the modifications as follows,

• Remove two unused import modules.
• Add leaf action-id in list progress-report

module sample {
  yang-version 1.1;
  namespace my:sample;
  prefix mysample;

  import ietf-inet-types { prefix inet; }

  typedef on-off {
    type enumeration {
      enum on {  value 1; }
      enum off { value 0; }
    }
    description "";
  }
   container test {
		list backup {
			key id;
			description "";

			leaf id {
				type string;
				description "";
			}
			leaf auto-export {
				type on-off ;
				default off ;
				description "";
			}
			leaf auto-export-uri {
				type inet:uri;
				must '../auto-export = "false" or .' ;
				description "";
			}
			list progress-report {
				key action-id;
				config false;
				max-elements 1;
				description "";
				leaf action-id {
				    type string;
				}
			}
			action create-backup {
				description "";
				input {
					leaf name {
                        type string;
                        description "";
					}
				}
				output {
					leaf return-value {
                        type leafref {
                            path "../../progress-report/action-id" ;
                        }
                        mandatory true;
                        description "";
					}
				}
			}
		}
   }
}

[rawat-he]

Closing the issue and thank you @fredgan for your prompt responses.