InvalidExpression on jinja loop

[khornberg]

Is there a way to list things for jinja2schema to ignore as it goes through the AST?

I was able to get it working if I hacked in

@visits_expr(nodes.Call)
def visit_call(ast, ctx, macroses=None, config=default_config):
    // my code to short circuit evaluating the node
    if ast.node.node.name in ('loop'):
        return Unknown(), Unknown()

in jinja2schema/visitors/expr.py

Stacktrace

return infer(template_source, config=Config(PACKAGE_NAME='documents', TEMPLATE_DIR=settings.TEMPLATE_PATH))
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/core.py", line 66, in infer
    return infer_from_ast(parse(template), config=config, ignore_constants=True)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/core.py", line 49, in infer_from_ast
    rv = visit(ast, {}, config)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/util.py", line 19, in visit
    structure = visit_many(node.body, macroses, config)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/util.py", line 36, in visit_many
    structure = visit(node, macroses, config, predicted_struct_cls, return_struct_cls)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/util.py", line 14, in visit
    structure = visit_stmt(node, macroses, config)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/stmt.py", line 54, in visit_stmt
    return visitor(ast, macroses, config)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/stmt.py", line 59, in visit_for
    body_struct = visit_many(ast.body, macroses, config, predicted_struct_cls=Scalar)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/util.py", line 36, in visit_many
    structure = visit(node, macroses, config, predicted_struct_cls, return_struct_cls)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/util.py", line 14, in visit
    structure = visit_stmt(node, macroses, config)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/stmt.py", line 54, in visit_stmt
    return visitor(ast, macroses, config)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/stmt.py", line 153, in visit_output
    return visit_many(ast.nodes, macroses, config, predicted_struct_cls=Scalar)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/util.py", line 36, in visit_many
    structure = visit(node, macroses, config, predicted_struct_cls, return_struct_cls)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/util.py", line 17, in visit
    _, structure = visit_expr(node, ctx, macroses, config)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/expr.py", line 156, in visit_expr
    return visitor(ast, ctx, macroses, config=config)
  File "/home/user/local/lib/python3.4/site-packages/jinja2schema/visitors/expr.py", line 402, in visit_call
    raise InvalidExpression(ast, '"{0}" call is not supported'.format(ast.node.attr))
jinja2schema.exceptions.InvalidExpression: line 367: "cycle" call is not supported