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Add extension mechanisms for custom checks to cpplint.py.

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This allows users of cpplint.py to specify additional check functions.

Will be used by: http://codereview.chromium.org/7834045/

Review URL: http://codereview.appspot.com/4950069
Patch from Alexei Svitkine <asvitkine@chromium.org>.
This commit is contained in:
erg@google.com 2011-09-07 21:12:16 +00:00
parent d7d2747c6c
commit efeacdf0fa
1 changed files with 21 additions and 7 deletions
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28
cpplint/cpplint.py vendored
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@ -2918,7 +2918,7 @@ def CheckForIncludeWhatYouUse(filename, clean_lines, include_state, error,
def ProcessLine(filename, file_extension,
clean_lines, line, include_state, function_state,
class_state, error):
class_state, error, extra_check_functions=[]):
"""Processes a single line in the file.
Args:
@ -2933,7 +2933,9 @@ def ProcessLine(filename, file_extension,
the current stack of nested class declarations being parsed.
error: A callable to which errors are reported, which takes 4 arguments:
filename, line number, error level, and message
extra_check_functions: An array of additional check functions that will be
run on each source line. Each function takes 4
arguments: filename, clean_lines, line, error
"""
raw_lines = clean_lines.raw_lines
ParseNolintSuppressions(filename, raw_lines[line], line, error)
@ -2946,9 +2948,11 @@ def ProcessLine(filename, file_extension,
class_state, error)
CheckPosixThreading(filename, clean_lines, line, error)
CheckInvalidIncrement(filename, clean_lines, line, error)
for check_fn in extra_check_functions:
check_fn(filename, clean_lines, line, error)
def ProcessFileData(filename, file_extension, lines, error):
def ProcessFileData(filename, file_extension, lines, error,
extra_check_functions=[]):
"""Performs lint checks and reports any errors to the given error function.
Args:
@ -2957,6 +2961,10 @@ def ProcessFileData(filename, file_extension, lines, error):
lines: An array of strings, each representing a line of the file, with the
last element being empty if the file is termined with a newline.
error: A callable to which errors are reported, which takes 4 arguments:
filename, line number, error level, and message
extra_check_functions: An array of additional check functions that will be
run on each source line. Each function takes 4
arguments: filename, clean_lines, line, error
"""
lines = (['// marker so line numbers and indices both start at 1'] + lines +
['// marker so line numbers end in a known way'])
@ -2976,7 +2984,8 @@ def ProcessFileData(filename, file_extension, lines, error):
clean_lines = CleansedLines(lines)
for line in xrange(clean_lines.NumLines()):
ProcessLine(filename, file_extension, clean_lines, line,
include_state, function_state, class_state, error)
include_state, function_state, class_state, error,
extra_check_functions)
class_state.CheckFinished(filename, error)
CheckForIncludeWhatYouUse(filename, clean_lines, include_state, error)
@ -2987,7 +2996,7 @@ def ProcessFileData(filename, file_extension, lines, error):
CheckForNewlineAtEOF(filename, lines, error)
def ProcessFile(filename, vlevel):
def ProcessFile(filename, vlevel, extra_check_functions=[]):
"""Does google-lint on a single file.
Args:
@ -2995,6 +3004,10 @@ def ProcessFile(filename, vlevel):
vlevel: The level of errors to report. Every error of confidence
>= verbose_level will be reported. 0 is a good default.
extra_check_functions: An array of additional check functions that will be
run on each source line. Each function takes 4
arguments: filename, clean_lines, line, error
"""
_SetVerboseLevel(vlevel)
@ -3039,7 +3052,8 @@ def ProcessFile(filename, vlevel):
and file_extension != 'cpp'):
sys.stderr.write('Ignoring %s; not a .cc or .h file\n' % filename)
else:
ProcessFileData(filename, file_extension, lines, Error)
ProcessFileData(filename, file_extension, lines, Error,
extra_check_functions)
if carriage_return_found and os.linesep != '\r\n':
# Use 0 for linenum since outputing only one error for potentially
# several lines.