Adding new stuff
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ViktorBarzin
parent
cb028acf05
commit
7b21428a6d
451 changed files with 6 additions and 1 deletions
362
vim-plugins/python-mode/pymode/libs/rope/base/codeanalyze.py
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362
vim-plugins/python-mode/pymode/libs/rope/base/codeanalyze.py
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@ -0,0 +1,362 @@
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import bisect
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import re
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import token
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import tokenize
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class ChangeCollector(object):
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def __init__(self, text):
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self.text = text
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self.changes = []
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def add_change(self, start, end, new_text=None):
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if new_text is None:
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new_text = self.text[start:end]
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self.changes.append((start, end, new_text))
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def get_changed(self):
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if not self.changes:
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return None
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self.changes.sort(key=lambda x: x[:2])
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pieces = []
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last_changed = 0
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for change in self.changes:
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start, end, text = change
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pieces.append(self.text[last_changed:start] + text)
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last_changed = end
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if last_changed < len(self.text):
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pieces.append(self.text[last_changed:])
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result = ''.join(pieces)
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if result != self.text:
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return result
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class SourceLinesAdapter(object):
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"""Adapts source to Lines interface
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Note: The creation of this class is expensive.
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"""
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def __init__(self, source_code):
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self.code = source_code
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self.starts = None
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self._initialize_line_starts()
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def _initialize_line_starts(self):
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self.starts = []
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self.starts.append(0)
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try:
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i = 0
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while True:
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i = self.code.index('\n', i) + 1
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self.starts.append(i)
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except ValueError:
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pass
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self.starts.append(len(self.code) + 1)
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def get_line(self, lineno):
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return self.code[self.starts[lineno - 1]:
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self.starts[lineno] - 1]
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def length(self):
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return len(self.starts) - 1
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def get_line_number(self, offset):
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return bisect.bisect(self.starts, offset)
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def get_line_start(self, lineno):
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return self.starts[lineno - 1]
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def get_line_end(self, lineno):
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return self.starts[lineno] - 1
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class ArrayLinesAdapter(object):
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def __init__(self, lines):
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self.lines = lines
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def get_line(self, line_number):
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return self.lines[line_number - 1]
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def length(self):
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return len(self.lines)
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class LinesToReadline(object):
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def __init__(self, lines, start):
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self.lines = lines
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self.current = start
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def readline(self):
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if self.current <= self.lines.length():
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self.current += 1
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return self.lines.get_line(self.current - 1) + '\n'
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return ''
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def __call__(self):
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return self.readline()
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class _CustomGenerator(object):
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def __init__(self, lines):
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self.lines = lines
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self.in_string = ''
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self.open_count = 0
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self.continuation = False
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def __call__(self):
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size = self.lines.length()
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result = []
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i = 1
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while i <= size:
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while i <= size and not self.lines.get_line(i).strip():
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i += 1
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if i <= size:
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start = i
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while True:
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line = self.lines.get_line(i)
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self._analyze_line(line)
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if not (self.continuation or self.open_count or
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self.in_string) or i == size:
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break
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i += 1
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result.append((start, i))
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i += 1
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return result
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# Matches all backslashes before the token, to detect escaped quotes
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_main_tokens = re.compile(r'(\\*)((\'\'\'|"""|\'|")|#|\[|\]|\{|\}|\(|\))')
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def _analyze_line(self, line):
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token = None
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for match in self._main_tokens.finditer(line):
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prefix = match.group(1)
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token = match.group(2)
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# Skip any tokens which are escaped
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if len(prefix) % 2 == 1:
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continue
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if token in ["'''", '"""', "'", '"']:
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if not self.in_string:
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self.in_string = token
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elif self.in_string == token:
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self.in_string = ''
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if self.in_string:
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continue
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if token == '#':
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break
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if token in '([{':
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self.open_count += 1
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elif token in ')]}':
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self.open_count -= 1
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if line and token != '#' and line.endswith('\\'):
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self.continuation = True
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else:
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self.continuation = False
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def custom_generator(lines):
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return _CustomGenerator(lines)()
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class LogicalLineFinder(object):
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def __init__(self, lines):
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self.lines = lines
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def logical_line_in(self, line_number):
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indents = count_line_indents(self.lines.get_line(line_number))
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tries = 0
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while True:
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block_start = get_block_start(self.lines, line_number, indents)
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try:
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return self._block_logical_line(block_start, line_number)
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except IndentationError as e:
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tries += 1
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if tries == 5:
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raise e
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lineno = e.lineno + block_start - 1
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indents = count_line_indents(self.lines.get_line(lineno))
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def generate_starts(self, start_line=1, end_line=None):
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for start, end in self.generate_regions(start_line, end_line):
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yield start
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def generate_regions(self, start_line=1, end_line=None):
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# XXX: `block_start` should be at a better position!
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block_start = 1
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readline = LinesToReadline(self.lines, block_start)
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try:
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for start, end in self._logical_lines(readline):
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real_start = start + block_start - 1
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real_start = self._first_non_blank(real_start)
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if end_line is not None and real_start >= end_line:
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break
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real_end = end + block_start - 1
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if real_start >= start_line:
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yield (real_start, real_end)
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except tokenize.TokenError:
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pass
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def _block_logical_line(self, block_start, line_number):
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readline = LinesToReadline(self.lines, block_start)
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shifted = line_number - block_start + 1
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region = self._calculate_logical(readline, shifted)
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start = self._first_non_blank(region[0] + block_start - 1)
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if region[1] is None:
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end = self.lines.length()
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else:
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end = region[1] + block_start - 1
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return start, end
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def _calculate_logical(self, readline, line_number):
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last_end = 1
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try:
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for start, end in self._logical_lines(readline):
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if line_number <= end:
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return (start, end)
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last_end = end + 1
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except tokenize.TokenError as e:
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current = e.args[1][0]
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return (last_end, max(last_end, current - 1))
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return (last_end, None)
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def _logical_lines(self, readline):
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last_end = 1
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for current_token in tokenize.generate_tokens(readline):
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current = current_token[2][0]
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if current_token[0] == token.NEWLINE:
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yield (last_end, current)
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last_end = current + 1
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def _first_non_blank(self, line_number):
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current = line_number
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while current < self.lines.length():
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line = self.lines.get_line(current).strip()
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if line and not line.startswith('#'):
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return current
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current += 1
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return current
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def tokenizer_generator(lines):
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return LogicalLineFinder(lines).generate_regions()
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class CachingLogicalLineFinder(object):
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def __init__(self, lines, generate=custom_generator):
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self.lines = lines
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self._generate = generate
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_starts = None
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@property
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def starts(self):
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if self._starts is None:
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self._init_logicals()
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return self._starts
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_ends = None
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@property
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def ends(self):
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if self._ends is None:
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self._init_logicals()
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return self._ends
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def _init_logicals(self):
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"""Should initialize _starts and _ends attributes"""
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size = self.lines.length() + 1
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self._starts = [None] * size
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self._ends = [None] * size
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for start, end in self._generate(self.lines):
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self._starts[start] = True
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self._ends[end] = True
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def logical_line_in(self, line_number):
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start = line_number
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while start > 0 and not self.starts[start]:
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start -= 1
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if start == 0:
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try:
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start = self.starts.index(True, line_number)
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except ValueError:
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return (line_number, line_number)
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return (start, self.ends.index(True, start))
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def generate_starts(self, start_line=1, end_line=None):
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if end_line is None:
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end_line = self.lines.length()
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for index in range(start_line, end_line):
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if self.starts[index]:
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yield index
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def get_block_start(lines, lineno, maximum_indents=80):
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"""Approximate block start"""
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pattern = get_block_start_patterns()
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for i in range(lineno, 0, -1):
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match = pattern.search(lines.get_line(i))
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if match is not None and \
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count_line_indents(lines.get_line(i)) <= maximum_indents:
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striped = match.string.lstrip()
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# Maybe we're in a list comprehension or generator expression
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if i > 1 and striped.startswith('if') or striped.startswith('for'):
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bracs = 0
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for j in range(i, min(i + 5, lines.length() + 1)):
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for c in lines.get_line(j):
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if c == '#':
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break
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if c in '[(':
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bracs += 1
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if c in ')]':
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bracs -= 1
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if bracs < 0:
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break
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if bracs < 0:
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break
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if bracs < 0:
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continue
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return i
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return 1
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_block_start_pattern = None
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def get_block_start_patterns():
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global _block_start_pattern
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if not _block_start_pattern:
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pattern = '^\\s*(((def|class|if|elif|except|for|while|with)\\s)|'\
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'((try|else|finally|except)\\s*:))'
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_block_start_pattern = re.compile(pattern, re.M)
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return _block_start_pattern
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def count_line_indents(line):
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indents = 0
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for char in line:
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if char == ' ':
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indents += 1
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elif char == '\t':
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indents += 8
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else:
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return indents
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return 0
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def get_string_pattern():
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start = r'(\b[uU]?[rR]?)?'
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longstr = r'%s"""(\\.|"(?!"")|\\\n|[^"\\])*"""' % start
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shortstr = r'%s"(\\.|\\\n|[^"\\])*"' % start
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return '|'.join([longstr, longstr.replace('"', "'"),
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shortstr, shortstr.replace('"', "'")])
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def get_comment_pattern():
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return r'#[^\n]*'
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