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ultimate-vim/vim_plugins_src/VOoM-4.3/VOoM-4.3/plugin/voom/voom_mode_python.py

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Python

# voom_mode_python.py
# Last Modified: 2011-05-01
# VOoM -- Vim two-pane outliner, plugin for Python-enabled Vim version 7.x
# Website: http://www.vim.org/scripts/script.php?script_id=2657
# Author: Vlad Irnov (vlad DOT irnov AT gmail DOT com)
# License: This program is free software. It comes without any warranty,
# to the extent permitted by applicable law. You can redistribute it
# and/or modify it under the terms of the Do What The Fuck You Want To
# Public License, Version 2, as published by Sam Hocevar.
# See http://sam.zoy.org/wtfpl/COPYING for more details.
"""
VOoM markup mode for Python code.
See |voom_mode_python|, ../../doc/voom.txt#*voom_mode_python*
"""
import token, tokenize
import traceback
import vim
def hook_makeOutline(VO, blines):
"""Return (tlines, bnodes, levels) for Body lines blines.
blines is either Vim buffer object (Body) or list of buffer lines.
"""
Z = len(blines)
tlines, bnodes, levels = [], [], []
tlines_add, bnodes_add, levels_add = tlines.append, bnodes.append, levels.append
#ignore_lnums, func_lnums = get_lnums_from_tokenize(blines)
try:
ignore_lnums, func_lnums = get_lnums_from_tokenize(blines)
except (IndentationError, tokenize.TokenError):
vim.command("call Voom_ErrorMsg('VOoM: EXCEPTION WHILE PARSING PYTHON OUTLINE')")
# DO NOT print to sys.stderr -- triggers Vim error when default stderr (no PyLog)
#traceback.print_exc() --this goes to sys.stderr
#print traceback.format_exc() --ok but no highlighting
lines = traceback.format_exc().replace("'","''").split('\n')
for l in lines:
vim.command("call Voom_ErrorMsg('%s')" %l)
return (['= |!!!ERROR: OUTLINE IS INVALID'], [1], [1])
gotHead = False # True if current line is a headline
indents = [0,] # indents of previous levels
funcLevels = [] # levels of previous def or class
indent_error = '' # inconsistent indent
for i in xrange(Z):
if i+1 in ignore_lnums: continue
bline = blines[i]
bline_s = bline.strip()
if not bline_s: continue
bline_ls = bline.lstrip()
# compute indent and level
indent = len(bline) - len(bline_ls)
if indent > indents[-1]:
indents.append(indent)
elif indent < indents[-1]:
while indents and (indents[-1] > indent):
indents.pop()
if indents[-1]==indent:
indent_error = ''
else:
indent_error = '!!! '
lev = len(indents)
# first line after the end of a class or def block
if funcLevels and lev <= funcLevels[-1]:
gotHead = True
while funcLevels and funcLevels[-1] >= lev:
funcLevels.pop()
# first line of a class or def block
if i+1 in func_lnums:
gotHead = True
if not funcLevels or (lev > funcLevels[-1]):
funcLevels.append(lev)
# special comment line (unconditional headline) or line with @decorator
elif bline_s.startswith('@') or bline_s.startswith('### ') or bline_s.startswith('#---'):
gotHead = True
if gotHead:
gotHead = False
tline = ' %s|%s%s' %('. '*(lev-1), indent_error, bline_s)
tlines_add(tline)
bnodes_add(i+1)
levels_add(lev)
return (tlines, bnodes, levels)
class BLines:
"""Wrapper around Vim buffer object or list of Body lines to provide
readline() method for use with tokenize.generate_tokens().
"""
def __init__(self, blines):
self.blines = blines
self.size = len(blines)
self.idx = -1
def readline(self):
self.idx += 1
if self.idx == self.size:
return ''
return "%s\n" %self.blines[self.idx]
### toktypes of tokens
STRING = token.STRING
NAME = token.NAME
NEWLINE = token.NEWLINE
def get_lnums_from_tokenize(blines):
"""Return dicts. Keys are Body lnums.
The main purpose is to get list of lnums to ignore: multi-line strings and
expressions.
"""
# lnums to ignore: multi-line strings and expressions other than the first line
ignore_lnums = {}
# lnums of 'class' and 'def' tokens
func_lnums = {}
inName = False
for tok in tokenize.generate_tokens(BLines(blines).readline):
toktype, toktext, (srow, scol), (erow, ecol), line = tok
#print token.tok_name[toktype], tok
if toktype == NAME:
if not inName:
inName = True
srow_name = srow
if toktext in ('def','class'):
func_lnums[srow] = toktext
elif toktype == NEWLINE and inName:
inName = False
if srow_name != erow:
for i in xrange(srow_name+1, erow+1):
ignore_lnums[i] = 0
elif toktype == STRING:
if srow != erow:
for i in xrange(srow+1, erow+1):
ignore_lnums[i] = 0
return (ignore_lnums, func_lnums)
def get_body_indent(body):
"""Return string used for indenting Body lines."""
et = int(vim.eval("getbufvar(%s,'&et')" %body))
if et:
ts = int(vim.eval("getbufvar(%s,'&ts')" %body))
return ' '*ts
else:
return '\t'
def hook_newHeadline(VO, level, blnum, tlnum):
"""Return (tree_head, bodyLines).
tree_head is new headline string in Tree buffer (text after |).
bodyLines is list of lines to insert in Body buffer.
"""
tree_head = '### NewHeadline'
indent = get_body_indent(VO.body)
body_head = '%s%s' %(indent*(level-1), tree_head)
return (tree_head, [body_head])
#def hook_changeLevBodyHead(VO, h, levDelta):
#"""Increase of decrease level number of Body headline by levDelta."""
#if levDelta==0: return h
def hook_doBodyAfterOop(VO, oop, levDelta, blnum1, tlnum1, blnum2, tlnum2, blnumCut, tlnumCut):
# this is instead of hook_changeLevBodyHead()
#print oop, levDelta, blnum1, tlnum1, blnum2, tlnum2, tlnumCut, blnumCut
Body = VO.Body
Z = len(Body)
ind = get_body_indent(VO.body)
# levDelta is wrong when pasting because hook_makeOutline() looks at relative indent
# determine level of pasted region from indent of its first line
if oop=='paste':
bline1 = Body[blnum1-1]
lev = (len(bline1) - len(bline1.lstrip())) / len(ind) + 1
levDelta = VO.levels[tlnum1-1] - lev
if not levDelta: return
indent = abs(levDelta) * ind
#--- copied from voom_mode_thevimoutliner.py -----------------------------
if blnum1:
assert blnum1 == VO.bnodes[tlnum1-1]
if tlnum2 < len(VO.bnodes):
assert blnum2 == VO.bnodes[tlnum2]-1
else:
assert blnum2 == Z
# dedent (if possible) or indent every non-blank line in Body region blnum1,blnum2
blines = []
for i in xrange(blnum1-1,blnum2):
line = Body[i]
if not line.strip():
blines.append(line)
continue
if levDelta > 0:
line = '%s%s' %(indent,line)
elif levDelta < 0 and line.startswith(indent):
line = line[len(indent):]
blines.append(line)
# replace Body region
Body[blnum1-1:blnum2] = blines
assert len(Body)==Z