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Use the diff parser as well.

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Dave Halter
2017-05-25 13:41:45 -04:00
parent e7ea01fb35
commit b7df52edb5
1 changed files with 5 additions and 2 deletions
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7
parso/grammar.py
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@@ -82,6 +82,9 @@ class Grammar(object):
lines = tokenize_lines = splitlines(code, keepends=True) lines = tokenize_lines = splitlines(code, keepends=True)
if diff_cache: if diff_cache:
if self._diff_parser is None:
raise TypeError("You have to define a diff parser to be able "
"to use this option.")
try: try:
module_cache_item = parser_cache[path] module_cache_item = parser_cache[path]
except KeyError: except KeyError:
@@ -95,7 +98,7 @@ class Grammar(object):
cache_path=cache_path) cache_path=cache_path)
return module_node return module_node
new_node = DiffParser(self._pgen_grammar, module_node).update( new_node = self._diff_parser(self._pgen_grammar, module_node).update(
old_lines=old_lines, old_lines=old_lines,
new_lines=lines new_lines=lines
) )
@@ -153,7 +156,7 @@ def load_grammar(version=None):
try: try:
with open(path) as f: with open(path) as f:
bnf_text = f.read() bnf_text = f.read()
grammar = Grammar(bnf_text, parser=PythonParser) grammar = Grammar(bnf_text, parser=PythonParser, diff_parser=DiffParser)
return _loaded_grammars.setdefault(path, grammar) return _loaded_grammars.setdefault(path, grammar)
except FileNotFoundError: except FileNotFoundError:
# Just load the default if the file does not exist. # Just load the default if the file does not exist.