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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/204723">204723</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2016-08-22 09:40:49 -0700 (Mon, 22 Aug 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>check-webkit-style does not work with Lambda functions in C++
https://bugs.webkit.org/show_bug.cgi?id=160910
Patch by Jonathan Bedard <jbedard@apple.com> on 2016-08-22
Reviewed by Darin Adler.
This change eliminates false positives on correctly styled lambda functions and includes a few basic checks on capture list.
* Scripts/webkitpy/style/checkers/cpp.py:
(regex_for_lambda_functions): Added function which checks if a string is the start of a lambda function.
(check_for_non_standard_constructs): Added lambda function check.
(check_spacing_for_function_call): Added lambda function check.
(check_braces): Added lambda function check.
* Scripts/webkitpy/style/checkers/cpp_unittest.py:
(CppStyleTest.test_lambda_functions): Added test function for lambda function style checks.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkToolsChangeLog">trunk/Tools/ChangeLog</a></li>
<li><a href="#trunkToolsScriptswebkitpystylecheckerscpppy">trunk/Tools/Scripts/webkitpy/style/checkers/cpp.py</a></li>
<li><a href="#trunkToolsScriptswebkitpystylecheckerscpp_unittestpy">trunk/Tools/Scripts/webkitpy/style/checkers/cpp_unittest.py</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkToolsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Tools/ChangeLog (204722 => 204723)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/ChangeLog 2016-08-22 16:19:20 UTC (rev 204722)
+++ trunk/Tools/ChangeLog 2016-08-22 16:40:49 UTC (rev 204723)
</span><span class="lines">@@ -1,3 +1,20 @@
</span><ins>+2016-08-22 Jonathan Bedard <jbedard@apple.com>
+
+ check-webkit-style does not work with Lambda functions in C++
+ https://bugs.webkit.org/show_bug.cgi?id=160910
+
+ Reviewed by Darin Adler.
+
+ This change eliminates false positives on correctly styled lambda functions and includes a few basic checks on capture list.
+
+ * Scripts/webkitpy/style/checkers/cpp.py:
+ (regex_for_lambda_functions): Added function which checks if a string is the start of a lambda function.
+ (check_for_non_standard_constructs): Added lambda function check.
+ (check_spacing_for_function_call): Added lambda function check.
+ (check_braces): Added lambda function check.
+ * Scripts/webkitpy/style/checkers/cpp_unittest.py:
+ (CppStyleTest.test_lambda_functions): Added test function for lambda function style checks.
+
</ins><span class="cx"> 2016-08-21 Alex Christensen <achristensen@webkit.org>
</span><span class="cx">
</span><span class="cx"> URLParser should parse IPv4 addresses
</span></span></pre></div>
<a id="trunkToolsScriptswebkitpystylecheckerscpppy"></a>
<div class="modfile"><h4>Modified: trunk/Tools/Scripts/webkitpy/style/checkers/cpp.py (204722 => 204723)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/Scripts/webkitpy/style/checkers/cpp.py 2016-08-22 16:19:20 UTC (rev 204722)
+++ trunk/Tools/Scripts/webkitpy/style/checkers/cpp.py 2016-08-22 16:40:49 UTC (rev 204723)
</span><span class="lines">@@ -1281,6 +1281,26 @@
</span><span class="cx"> return True
</span><span class="cx">
</span><span class="cx">
</span><ins>+def regex_for_lambda_functions(line, line_number, error):
+ result = search(r'\s\[.*?\]\s', line)
+ if result:
+ group = result.group()
+
+ targ_error = None
+
+ if search(r'(\[\s|\s\]|\s,)', group):
+ targ_error = [line_number, 'whitespace/brackets', 4,
+ 'Extra space in capture list.']
+
+ if targ_error and regex_for_lambda_functions.__last_error != targ_error:
+ error(targ_error[0], targ_error[1], targ_error[2], targ_error[3])
+ regex_for_lambda_functions.__last_error = targ_error
+ return True
+ return False
+
+regex_for_lambda_functions.__last_error = None
+
+
</ins><span class="cx"> def check_for_non_standard_constructs(clean_lines, line_number,
</span><span class="cx"> class_state, error):
</span><span class="cx"> """Logs an error if we see certain non-ANSI constructs ignored by gcc-2.
</span><span class="lines">@@ -1469,6 +1489,8 @@
</span><span class="cx"> # they'll never need to wrap.
</span><span class="cx"> if ( # Ignore control structures.
</span><span class="cx"> not search(r'\b(if|for|while|switch|return|new|delete)\b', function_call)
</span><ins>+ # Ignore lambda functions
+ and not regex_for_lambda_functions(function_call, line_number, error)
</ins><span class="cx"> # Ignore pointers/references to functions.
</span><span class="cx"> and not search(r' \([^)]+\)\([^)]*(\)|,$)', function_call)
</span><span class="cx"> # Ignore pointers/references to arrays.
</span><span class="lines">@@ -2431,7 +2453,8 @@
</span><span class="cx"> # and '- (' and '+ (' for Objective-C methods.
</span><span class="cx"> previous_line = get_previous_non_blank_line(clean_lines, line_number)[0]
</span><span class="cx"> if ((not search(r'[;:}{)=]\s*$|\)\s*((const|override|const override)\s*)?(->\s*\S+)?\s*$', previous_line)
</span><del>- or search(r'\b(if|for|while|switch|else|NS_ENUM)\b', previous_line))
</del><ins>+ or search(r'\b(if|for|while|switch|else|NS_ENUM)\b', previous_line)
+ or regex_for_lambda_functions(previous_line, line_number, error))
</ins><span class="cx"> and previous_line.find('#') < 0
</span><span class="cx"> and previous_line.find('- (') != 0
</span><span class="cx"> and previous_line.find('+ (') != 0):
</span><span class="lines">@@ -2440,6 +2463,7 @@
</span><span class="cx"> elif (search(r'\)\s*(((const|override)\s*)*\s*)?{\s*$', line)
</span><span class="cx"> and line.count('(') == line.count(')')
</span><span class="cx"> and not search(r'(\s*(if|for|while|switch|NS_ENUM|@synchronized)|} @catch)\b', line)
</span><ins>+ and not regex_for_lambda_functions(line, line_number, error)
</ins><span class="cx"> and line.find("](") < 0
</span><span class="cx"> and not match(r'\s+[A-Z_][A-Z_0-9]+\b', line)):
</span><span class="cx"> error(line_number, 'whitespace/braces', 4,
</span></span></pre></div>
<a id="trunkToolsScriptswebkitpystylecheckerscpp_unittestpy"></a>
<div class="modfile"><h4>Modified: trunk/Tools/Scripts/webkitpy/style/checkers/cpp_unittest.py (204722 => 204723)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Tools/Scripts/webkitpy/style/checkers/cpp_unittest.py 2016-08-22 16:19:20 UTC (rev 204722)
+++ trunk/Tools/Scripts/webkitpy/style/checkers/cpp_unittest.py 2016-08-22 16:40:49 UTC (rev 204723)
</span><span class="lines">@@ -1882,6 +1882,14 @@
</span><span class="cx"> self.assert_lint('int main(int argc, char* agrv [])', 'Extra space before [. [whitespace/brackets] [5]')
</span><span class="cx"> self.assert_lint(' str [strLength] = \'\\0\';', 'Extra space before [. [whitespace/brackets] [5]')
</span><span class="cx">
</span><ins>+ def test_lambda_functions(self):
+ self.assert_lint(' [&] (Type argument) {', '')
+ self.assert_lint(' [] {', '')
+ self.assert_lint(' [ =] (Type argument) {', 'Extra space in capture list. [whitespace/brackets] [4]')
+ self.assert_lint(' [var, var_ref&] {', '')
+ self.assert_lint(' [var , var_ref&] {', 'Extra space in capture list. [whitespace/brackets] [4]')
+ self.assert_lint(' [var,var_ref&] {', 'Missing space after , [whitespace/comma] [3]')
+
</ins><span class="cx"> def test_spacing_around_else(self):
</span><span class="cx"> self.assert_lint('}else {', 'Missing space before else'
</span><span class="cx"> ' [whitespace/braces] [5]')
</span></span></pre>
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