Bug 174315 – check-webkit-style: cpp linter incorrectly treats colon appearing in a string argument as the start of the initializer list

• Component: Tools / Tests
• Status: NEW

[Matt Baker]

check-webkit-style's cpp linter incorrectly treats colon appearing in a string argument as the start of the initializer list, and emits an error if whitespace rules aren't followed.

For example, running check-webkit-style on the following:

MyClass::MyClass()
    : m_foo("foo:bar")
{
}

Will output:
ERROR: Missing spaces around :  [whitespace/init] [4]

Note:
The problem is with the cpp linter regex, see Tools/Scripts/webkitpy/style/checkers/cpp.py:2043:

# match the start of initialization list
if search(r'^(?P<indentation>\s*)((explicit\s+)?[^(\s|\?)]+\([^\?]*\)\s?\:|^(\s|\?)*\:)([^\:]|\Z)[^;]*$', line):
    if search(r'[^:]\:[^\:\s]+', line):
        error(line_number, 'whitespace/init', 4,
            'Missing spaces around :')
    ...

[Radar WebKit Bug Importer]

<rdar://problem/33216486>

[Matt Baker]

Created attachment 315052 [details]
Patch

[Matt Baker]

Comment on attachment 315052 [details]
Patch

r- for now.

Need to improve on this (using elided over raw_lines feels risky), and add a test case to Tools/Scripts/webkitpy/style/checkers/cpp_unittest.py.