third_party.pylibs.pylint.src/examples/custom_raw.py
Emile Anclin 4192e79a83 py3k: need to handle guess_encoding in astng
Astng will try to find the right encoding and provide the right "stream"
interface for the Pylint checkers.
Reading a stream with the wrong encoding in py3k will generate a UnicodeError.

The introduced a 'F0010' failure should maybe be replaced by E0501, E0502 and
F0002? However, can we call 'unexpected errors' the ASTNGBuildingExceptions
that we raise in logilab.astng.builder?
2010-11-22 15:36:44 +01:00

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Python

from pylint.interfaces import IRawChecker
from pylint.checkers import BaseChecker
class MyRawChecker(BaseChecker):
"""check for line continuations with '\' instead of using triple
quoted string or parenthesis
"""
__implements__ = IRawChecker
name = 'custom_raw'
msgs = {'W9901': ('use \\ for line continuation',
('Used when a \\ is used for a line continuation instead'
' of using triple quoted string or parenthesis.')),
}
options = ()
def process_module(self, node):
"""process a module
the module's content is accessible via node.file_stream object
"""
stream = node.file_stream
stream.seek(0)
for (lineno, line) in enumerate(stream):
if line.rstrip().endswith('\\'):
self.add_message('W9901', line=lineno)
def register(linter):
"""required method to auto register this checker"""
linter.register_checker(MyRawChecker(linter))