GitHub Viewer
"""Extracting and changing portions of the current line
All functions take cursor offset from the beginning of the line and the line of
Python code, and return None, or a tuple of the start index, end index, and the
word."""
from itertools import chain
from bpython.lazyre import LazyReCompile
current_word_re = LazyReCompile(r'[\w_][\w0-9._]*[(]?')
def current_word(cursor_offset, line):
"""the object.attribute.attribute just before or under the cursor"""
pos = cursor_offset
matches = current_word_re.finditer(line)
start = pos
end = pos
word = None
for m in matches:
if m.start() < pos and m.end() >= pos:
start = m.start()
end = m.end()
word = m.group()
if word is None:
return None
return (start, end, word)
current_dict_key_re = LazyReCompile(r'''[\w_][\w0-9._]*\[([\w0-9._(), '"]*)''')
def current_dict_key(cursor_offset, line):
"""If in dictionary completion, return the current key"""
matches = current_dict_key_re.finditer(line)
for m in matches:
if m.start(1) = cursor_offset:
return (m.start(1), m.end(1), m.group(1))
return None
current_dict_re = LazyReCompile(r'''([\w_][\w0-9._]*)\[([\w0-9._(), '"]*)''')
def current_dict(cursor_offset, line):
"""If in dictionary completion, return the dict that should be used"""
matches = current_dict_re.finditer(line)
for m in matches:
if m.start(2) = cursor_offset:
return (m.start(1), m.end(1), m.group(1))
return None
current_string_re = LazyReCompile(
'''(?P(?:""")|"|(?:''\')|')(?:((?P.+?)(?P=open))|'''
'''(?P.+))''')
def current_string(cursor_offset, line):
"""If inside a string of nonzero length, return the string (excluding
quotes)
Weaker than bpython.Repl's current_string, because that checks that a
string is a string based on previous lines in the buffer."""
for m in current_string_re.finditer(line):
i = 3 if m.group(3) else 4
if m.start(i) = cursor_offset:
return m.start(i), m.end(i), m.group(i)
return None
current_object_re = LazyReCompile(r'([\w_][\w0-9_]*)[.]')
def current_object(cursor_offset, line):
"""If in attribute completion, the object on which attribute should be
looked up."""
match = current_word(cursor_offset, line)
if match is None:
return None
start, end, word = match
matches = current_object_re.finditer(word)
s = ''
for m in matches:
if m.end(1) + start < cursor_offset:
if s:
s += '.'
s += m.group(1)
if not s:
return None
return start, start+len(s), s
current_object_attribute_re = LazyReCompile(r'([\w_][\w0-9_]*)[.]?')
def current_object_attribute(cursor_offset, line):
"""If in attribute completion, the attribute being completed"""
match = current_word(cursor_offset, line)
if match is None:
return None
start, end, word = match
matches = current_object_attribute_re.finditer(word)
next(matches)
for m in matches:
if (m.start(1) + start = cursor_offset):
return m.start(1) + start, m.end(1) + start, m.group(1)
return None
current_from_import_from_re = LazyReCompile(
r'from ([\w0-9_.]*)(?:\s+import\s+([\w0-9_]+[,]?\s*)+)*')
def current_from_import_from(cursor_offset, line):
"""If in from import completion, the word after from
returns None if cursor not in or just after one of the two interesting
parts of an import: from (module) import (name1, name2)
"""
# TODO allow for as's
tokens = line.split()
if not ('from' in tokens or 'import' in tokens):
return None
matches = current_from_import_from_re.finditer(line)
for m in matches:
if ((m.start(1) < cursor_offset and m.end(1) >= cursor_offset) or
(m.start(2) < cursor_offset and m.end(2) >= cursor_offset)):
return m.start(1), m.end(1), m.group(1)
return None
current_from_import_import_re_1 = LazyReCompile(r'from\s([\w0-9_.]*)\s+import')
current_from_import_import_re_2 = LazyReCompile(r'([\w0-9_]+)')
current_from_import_import_re_3 = LazyReCompile(r'[,][ ]([\w0-9_]*)')
def current_from_import_import(cursor_offset, line):
"""If in from import completion, the word after import being completed
returns None if cursor not in or just after one of these words
"""
baseline = current_from_import_import_re_1.search(line)
if baseline is None:
return None
match1 = current_from_import_import_re_2.search(line[baseline.end():])
if match1 is None:
return None
matches = current_from_import_import_re_3.finditer(line[baseline.end():])
for m in chain((match1, ), matches):
start = baseline.end() + m.start(1)
end = baseline.end() + m.end(1)
if start < cursor_offset and end >= cursor_offset:
return start, end, m.group(1)
return None
current_import_re_1 = LazyReCompile(r'import')
current_import_re_2 = LazyReCompile(r'([\w0-9_.]+)')
current_import_re_3 = LazyReCompile(r'[,][ ]([\w0-9_.]*)')
def current_import(cursor_offset, line):
# TODO allow for multiple as's
baseline = current_import_re_1.search(line)
if baseline is None:
return None
match1 = current_import_re_2.search(line[baseline.end():])
if match1 is None:
return None
matches = current_import_re_3.finditer(line[baseline.end():])
for m in chain((match1, ), matches):
start = baseline.end() + m.start(1)
end = baseline.end() + m.end(1)
if start < cursor_offset and end >= cursor_offset:
return start, end, m.group(1)
current_method_definition_name_re = LazyReCompile("def\s+([a-zA-Z_][\w]*)")
def current_method_definition_name(cursor_offset, line):
"""The name of a method being defined"""
matches = current_method_definition_name_re.finditer(line)
for m in matches:
if (m.start(1) = cursor_offset):
return m.start(1), m.end(1), m.group(1)
return None
current_single_word_re = LazyReCompile(r"(?= cursor_offset:
return m.start(4), m.end(4), m.group(4)
return None