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"""
Debug related utility functions for the Mu editor.
Copyright (c) Nicholas H.Tollervey and others (see the AUTHORS file).
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
def is_breakpoint_line(code):
"""
Return a boolean indication if the specified code from a single line can
have a breakpoint added to it.
Based entirely on simple but effective heuristics (see comments).
"""
code = code.strip()
if not code:
return False
# Can't set breakpoints on blank lines or comments.
# TODO: Make this more robust.
if code[0] == '#' or code[:3] == '"""' or code[:3] == "'''":
return False
# Can't set breakpoints on lines that end with opening (, { or [
if code[-1] in ('(', '{', '['):
return False
# Can't set breakpoints on lines that contain only closing ), } or ]
if len(code) == 1 and code in (')', '}', ']'):
return False
return True
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