def _finish_off(block, prim=None):
""" Convert block to an AST and add it to the ast_list. Raise a
PyExportError on failure. """
if prim is None:
prim = _get_prim(block)
if convert_me:
if prim.export_me:
try:
new_ast = prim.get_ast(*arg_asts)
except ValueError:
traceback.print_exc()
raise PyExportError(_("error while exporting block"),
block=block)
if isinstance(new_ast, (list, tuple)):
ast_list.extend(new_ast)
elif new_ast is not None:
ast_list.append(new_ast)
elif arg_asts: # TODO do we ever get here?
new_ast = ast.List(elts=arg_asts, ctx=ast.Load)
ast_list.append(new_ast)
else:
ast_list.append((prim, ) + tuple(arg_asts))
def _get_prim(block):
prim = lc.get_prim_callable(block.primitive)
# fail gracefully if primitive is not a Primitive object
if not isinstance(prim, Primitive):
raise PyExportError(_("block is not exportable"), block=block)
return prim