Cleanup the ParseError stuff.

jedi/evaluate/pep0484.py

@@ -22,7 +22,7 @@ x support for type hint comments for functions, `# type: (int, str) -> int`.
 import itertools
 
 import os
-from jedi.parser import ParseError, tree
+from jedi.parser import ParserSyntaxError, tree
 from jedi.parser.python import parse
 from jedi.common import unite
 from jedi.evaluate.cache import memoize_default
@@ -67,7 +67,7 @@ def _fix_forward_reference(context, node):
                 start_symbol='eval_input',
                 error_recovery=False
             )
-        except ParseError:
+        except ParserSyntaxError:
             debug.warning('Annotation not parsed: %s' % evaled_node.obj)
             return node
         else:

jedi/parser/__init__.py

@@ -1,5 +1,6 @@
-from jedi.parser.parser import Parser, ParserWithRecovery, ParseError
+from jedi.parser.parser import Parser, ParserWithRecovery, ParserSyntaxError
 from jedi.parser.pgen2.pgen import generate_grammar
+from jedi.parser import python
 
 
 def parse(grammar, code):

jedi/parser/parser.py

@@ -24,13 +24,12 @@ from jedi.parser.token import (DEDENT, INDENT, ENDMARKER, NEWLINE, NUMBER,
 from jedi.parser.pgen2.parse import PgenParser
 
 
-class ParseError(Exception):
+class ParserSyntaxError(Exception):
     """
-    Signals you that the code you fed the Parser was not correct Python code.
+    Contains error information about the parser tree.
+
+    May be raised as an exception.
     """
-
-
-class ParserSyntaxError(object):
     def __init__(self, message, position):
         self.message = message
         self.position = position
@@ -124,7 +123,7 @@ class Parser(object):
 
     def error_recovery(self, grammar, stack, arcs, typ, value, start_pos, prefix,
                        add_token_callback):
-        raise ParseError
+        raise ParserSyntaxError('SyntaxError: invalid syntax', start_pos)
 
     def convert_node(self, grammar, type, children):
         """

jedi/parser/python/__init__.py

@@ -5,7 +5,7 @@ import os
 
 from jedi._compatibility import FileNotFoundError
 from jedi.parser.pgen2.pgen import generate_grammar
-from jedi.parser.parser import Parser, ParserWithRecovery, ParseError
+from jedi.parser.parser import Parser, ParserWithRecovery
 from jedi.parser.tokenize import source_tokens
 
 

test/test_parser/test_pgen2.py

@@ -10,7 +10,7 @@ from textwrap import dedent
 
 from jedi._compatibility import is_py3
 from jedi.parser.python import parse as _parse, load_grammar
-from jedi.parser import ParseError
+from jedi.parser import ParserSyntaxError
 import pytest
 
 from test.helpers import TestCase
@@ -37,7 +37,7 @@ class GrammarTest(TestCase):
     def invalid_syntax(self, code, **kwargs):
         try:
             parse(code, **kwargs)
-        except ParseError:
+        except ParserSyntaxError:
             pass
         else:
             raise AssertionError("Syntax shouldn't have been valid")