[PATCH] Add clang-tidy-diff.py script to run clang-tidy and display warnings on changed lines only.

[Alexander Kornienko]

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Comment at: clang-tidy/tool/clang-tidy-diff.py:34
@@ +33,3 @@
+import subprocess
+import StringIO
+import sys
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Daniel Jasper wrote:
> Is StringIO used?
Removed unused imports.

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Comment at: clang-tidy/tool/clang-tidy-diff.py:52
@@ +51,3 @@
+  parser.add_argument('-iregex', metavar='PATTERN', default=
+                      r'.*\.(cpp|cc|c\+\+|cxx|c|cl|h|hpp|m|mm|inc|js|proto'
+                      r'|protodevel)',
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Daniel Jasper wrote:
> Are js, proto and protodevel useful here?
Not really. Removed.

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Comment at: clang-tidy/tool/clang-tidy-diff.py:103
@@ +102,3 @@
+
+  # TODO: Corner cases.
+  line_filter_json = json.dumps(
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Daniel Jasper wrote:
> s/TODO/FIXME/
> 
> And maybe provide a bit of context as this doesn't really mean anything.
Removed the comment, what I meant there, is already handled.

http://reviews.llvm.org/D4288