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#
# Copyright (C) 2005 Stefan Seefeld
# All rights reserved.
# Licensed to the public under the terms of the GNU LGPL (>= 2),
# see the file COPYING for details.
#
from Synopsis import AST
from Filter import Filter
import re
class SSFilter(Filter):
"""A class that selects only // comments."""
__re_star = r'/\*(.*?)\*/'
__re_ss = r'^[ \t]*// ?(.*)$'
def __init__(self):
"Compiles the regular expressions"
self.re_star = re.compile(SSFilter.__re_star, re.S)
self.re_ss = re.compile(SSFilter.__re_ss, re.M)
def filter_comment(self, comment):
"""Replaces the text in the comment. It calls strip_star() first to
remove all multi-line star comments, then follows with filter_ss().
"""
text = comment.text()
text = self.filter_ss(self.strip_star(text))
comment.set_text(text)
def strip_star(self, str):
"""Strips all star-format comments from the string"""
mo = self.re_star.search(str)
while mo:
str = str[:mo.start()] + str[mo.end():]
mo = self.re_star.search(str)
return str
def filter_ss(self, str):
"""Filters str and returns just the lines that start with //"""
return '\n'.join(self.re_ss.findall(str))
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