def parse(self):
""" Parse the document layout.
To get the results, use the following properties:
- root_node
- variables
- paragraphs
"""
# preview in preferences dialog have no file path
if not self.editor.filePath:
return
root_node = None
variables = []
paragraphs = []
try:
root_node, variables, paragraphs = parse_ast(self.editor.filePath, encoding=self.editor.fileEncoding)
except (TypeError, IOError):
# file does not exists
pass
except AttributeError:
# this should never happen but we must exit gracefully
logging.exception("Failed to parse document, probably due to " "a malformed syntax.")
changed = False
if self.__root_node is None or cmp_doc_node(root_node, self.__root_node):
changed = True
self.__root_node = root_node
self.__vars = variables
self.__paragraphs = paragraphs
if changed:
self.documentLayoutChanged.emit(self.root_node)
def test_free_parser():
"""
HelloWorld.cbl and HelloWorldFree.cbl must have the same ast.
"""
non_free_ast, non_free_vars, non_free_procs = parser.parse_ast(
"test/testfiles/HelloWorld.cbl")
free_ast, free_vars, free_procs = parser.parse_ast("test/testfiles/HelloWorldFree.cbl",
free=True)
result = parser.cmp_doc_node(non_free_ast, free_ast)
assert result == 0 # 0 means same statement.
