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Diff parser: Rewrite tokenizer modifications a bit

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This commit is contained in:
Dave Halter
2020-03-29 22:41:59 +02:00
parent 9f8a68677d
commit 0d9886c22a
4 changed files with 42 additions and 42 deletions
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2
parso/parser.py
View File

@@ -134,7 +134,7 @@ class BaseParser(object):
# However, the error recovery might have added the token again, if
# the stack is empty, we're fine.
raise InternalParseError(
"incomplete input", token.type, token.value, token.start_pos
"incomplete input", token.type, token.string, token.start_pos
)
if len(self.stack) > 1:

32
parso/python/diff.py
View File

@@ -397,6 +397,8 @@ class DiffParser(object):
def _diff_tokenize(self, lines, until_line, line_offset=0):
is_first_token = True
omitted_first_indent = False
was_newline = False
base_indentation = 0
indents = []
tokens = self._tokenizer(lines, (1, 0))
stack = self._active_parser.stack
@@ -405,6 +407,7 @@ class DiffParser(object):
if typ == PythonTokenTypes.INDENT:
indents.append(start_pos[1])
if is_first_token:
base_indentation = start_pos[1]
omitted_first_indent = True
# We want to get rid of indents that are only here because
# we only parse part of the file. These indents would only
@@ -436,18 +439,18 @@ class DiffParser(object):
)
break
elif typ == PythonTokenTypes.NEWLINE and start_pos[0] >= until_line:
yield PythonToken(typ, string, start_pos, prefix)
# Check if the parser is actually in a valid suite state.
if _suite_or_file_input_is_valid(self._pgen_grammar, stack):
start_pos = start_pos[0] + 1, 0
while len(indents) > int(omitted_first_indent):
indents.pop()
yield PythonToken(PythonTokenTypes.DEDENT, '', start_pos, '')
yield PythonToken(PythonTokenTypes.ENDMARKER, '', start_pos, '')
break
else:
continue
was_newline = True
elif was_newline:
was_newline = False
if start_pos[1] <= base_indentation:
# Check if the parser is actually in a valid suite state.
if _suite_or_file_input_is_valid(self._pgen_grammar, stack):
start_pos = start_pos[0] + 1, 0
while len(indents) > int(omitted_first_indent):
indents.pop()
yield PythonToken(PythonTokenTypes.DEDENT, '', start_pos, '')
yield PythonToken(PythonTokenTypes.ENDMARKER, '', start_pos, '')
break
yield PythonToken(typ, string, start_pos, prefix)
@@ -479,10 +482,7 @@ class _NodesTreeNode(object):
except _PositionUpdatingFinished:
pass
if add_error_leaf is not None:
if add_error_leaf == 'INDENT':
pos = children_part[0].start_pos
else:
pos = children_part[0].start_pos[0], 0
pos = children_part[0].start_pos
children.append(PythonErrorLeaf(add_error_leaf, '', pos))
children += children_part
self.tree_node.children = children

2
parso/python/tokenize.py
View File

@@ -397,7 +397,7 @@ def tokenize_lines(lines, version_info, start_pos=(1, 0)):
def dedent_if_necessary(start):
while start < indents[-1]:
if start > indents[-2]:
yield PythonToken(ERROR_DEDENT, '', (lnum, 0), '')
yield PythonToken(ERROR_DEDENT, '', (lnum, start), '')
indents[-1] = start
break
yield PythonToken(DEDENT, '', spos, '')

48
test/test_diff_parser.py
View File

@@ -138,7 +138,7 @@ def test_if_simple(differ):
differ.initialize(src + 'a')
differ.parse(src + else_ + "a", copies=0, parsers=1)
differ.parse(else_, parsers=1, copies=1, expect_error_leaves=True)
differ.parse(else_, parsers=1, expect_error_leaves=True)
differ.parse(src + else_, parsers=1)
@@ -239,7 +239,7 @@ def test_backslash(differ):
def y():
pass
""")
differ.parse(src, parsers=2)
differ.parse(src, parsers=1)
src = dedent(r"""
def first():
@@ -250,7 +250,7 @@ def test_backslash(differ):
def second():
pass
""")
differ.parse(src, parsers=1)
differ.parse(src, parsers=2)
def test_full_copy(differ):
@@ -282,7 +282,7 @@ def test_issues_with_error_leaves(differ):
str
''')
differ.initialize(code)
differ.parse(code2, parsers=1, copies=1, expect_error_leaves=True)
differ.parse(code2, parsers=1, expect_error_leaves=True)
def test_unfinished_nodes(differ):
@@ -368,7 +368,7 @@ def test_totally_wrong_whitespace(differ):
'''
differ.initialize(code1)
differ.parse(code2, parsers=4, copies=0, expect_error_leaves=True)
differ.parse(code2, parsers=2, copies=0, expect_error_leaves=True)
def test_node_insertion(differ):
@@ -442,7 +442,7 @@ def test_in_class_movements(differ):
""")
differ.initialize(code1)
differ.parse(code2, parsers=2, copies=1)
differ.parse(code2, parsers=1)
def test_in_parentheses_newlines(differ):
@@ -487,7 +487,7 @@ def test_indentation_issue(differ):
""")
differ.initialize(code1)
differ.parse(code2, parsers=1)
differ.parse(code2, parsers=2)
def test_endmarker_newline(differ):
@@ -588,7 +588,7 @@ def test_if_removal_and_reappearence(differ):
la
''')
differ.initialize(code1)
differ.parse(code2, parsers=1, copies=4, expect_error_leaves=True)
differ.parse(code2, parsers=1, copies=3, expect_error_leaves=True)
differ.parse(code1, parsers=1, copies=1)
differ.parse(code3, parsers=1, copies=1)
@@ -621,8 +621,8 @@ def test_differing_docstrings(differ):
''')
differ.initialize(code1)
differ.parse(code2, parsers=3, copies=1)
differ.parse(code1, parsers=3, copies=1)
differ.parse(code2, parsers=2, copies=1)
differ.parse(code1, parsers=2, copies=1)
def test_one_call_in_function_change(differ):
@@ -827,10 +827,10 @@ def test_indentation_issues(differ):
''')
differ.initialize(code1)
differ.parse(code2, parsers=3, copies=2, expect_error_leaves=True)
differ.parse(code1, copies=2, parsers=2)
differ.parse(code2, parsers=1, copies=1, expect_error_leaves=True)
differ.parse(code1, copies=1, parsers=2)
differ.parse(code3, parsers=1, copies=1)
differ.parse(code1, parsers=1, copies=2)
differ.parse(code1, parsers=1, copies=1)
def test_error_dedent_issues(differ):
@@ -863,7 +863,7 @@ def test_error_dedent_issues(differ):
''')
differ.initialize(code1)
differ.parse(code2, parsers=6, copies=2, expect_error_leaves=True)
differ.parse(code2, parsers=2, copies=0, expect_error_leaves=True)
differ.parse(code1, parsers=1, copies=0)
@@ -949,7 +949,7 @@ def test_with_and_funcdef_in_call(differ, prefix):
code2 = insert_line_into_code(code1, 3, 'def y(self, args):\n')
differ.initialize(code1)
differ.parse(code2, parsers=3, expect_error_leaves=True)
differ.parse(code2, parsers=1, expect_error_leaves=True)
differ.parse(code1, parsers=1)
@@ -964,7 +964,7 @@ def test_wrong_backslash(differ):
code2 = insert_line_into_code(code1, 3, '\\.whl$\n')
differ.initialize(code1)
differ.parse(code2, parsers=2, copies=2, expect_error_leaves=True)
differ.parse(code2, parsers=2, copies=1, expect_error_leaves=True)
differ.parse(code1, parsers=1, copies=1)
@@ -1043,7 +1043,7 @@ def test_random_character_insertion(differ):
# 4
''')
differ.initialize(code1)
differ.parse(code2, copies=1, parsers=3, expect_error_leaves=True)
differ.parse(code2, copies=1, parsers=2, expect_error_leaves=True)
differ.parse(code1, copies=1, parsers=1)
@@ -1105,7 +1105,7 @@ def test_all_sorts_of_indentation(differ):
''')
differ.initialize(code1)
differ.parse(code2, copies=1, parsers=1, expect_error_leaves=True)
differ.parse(code1, copies=1, parsers=3, expect_error_leaves=True)
differ.parse(code1, copies=1, parsers=1, expect_error_leaves=True)
code3 = dedent('''\
if 1:
@@ -1152,7 +1152,7 @@ def test_dont_copy_error_leaves(differ):
''')
differ.initialize(code1)
differ.parse(code2, parsers=1, expect_error_leaves=True)
differ.parse(code1, parsers=2)
differ.parse(code1, parsers=1)
def test_error_dedent_in_between(differ):
@@ -1203,7 +1203,7 @@ def test_some_other_indentation_issues(differ):
''')
differ.initialize(code1)
differ.parse(code2, copies=0, parsers=1, expect_error_leaves=True)
differ.parse(code1, copies=2, parsers=1)
differ.parse(code1, copies=1, parsers=1)
def test_open_bracket_case1(differ):
@@ -1269,7 +1269,7 @@ def test_some_weird_removals(differ):
''')
differ.initialize(code1)
differ.parse(code2, copies=1, parsers=1, expect_error_leaves=True)
differ.parse(code3, copies=1, parsers=2, expect_error_leaves=True)
differ.parse(code3, copies=1, parsers=1, expect_error_leaves=True)
differ.parse(code1, copies=1)
@@ -1310,7 +1310,7 @@ def test_parent_on_decorator(differ):
def a_test(self):
pass''')
differ.initialize(code1)
module_node = differ.parse(code2, copies=2, parsers=1)
module_node = differ.parse(code2, parsers=1)
cls = module_node.children[0]
cls_suite = cls.children[-1]
assert len(cls_suite.children) == 3
@@ -1330,5 +1330,5 @@ def test_wrong_indent_in_def(differ):
c
''')
differ.initialize(code1)
differ.parse(code2, copies=1, parsers=2, expect_error_leaves=True)
differ.parse(code1, parsers=2)
differ.parse(code2, parsers=1, expect_error_leaves=True)
differ.parse(code1, parsers=1)