[analyzer] Support for naive cross translation unit analysis
The aim of this patch is to be minimal to enable incremental development of
the feature on the top of the tree. This patch should be an NFC when the
feature is turned off. It is turned off by default and still considered as
experimental.
Technical details are available in the EuroLLVM Talk:
http://llvm.org/devmtg/2017-03//2017/02/20/accepted-sessions.html#7
Note that the initial prototype was done by A. Sidorin et al.: http://lists.llvm.org/pipermail/cfe-dev/2015-October/045730.html
Contributions to the measurements and the new version of the code: Peter Szecsi, Zoltan Gera, Daniel Krupp, Kareem Khazem.
Differential Revision: https://reviews.llvm.org/D30691
llvm-svn: 326323
diff --git a/clang/tools/scan-build-py/libscanbuild/report.py b/clang/tools/scan-build-py/libscanbuild/report.py
index 54b9695..b3753c1 100644
--- a/clang/tools/scan-build-py/libscanbuild/report.py
+++ b/clang/tools/scan-build-py/libscanbuild/report.py
@@ -13,7 +13,6 @@
import os.path
import sys
import shutil
-import itertools
import plistlib
import glob
import json
@@ -255,24 +254,29 @@
def read_bugs(output_dir, html):
+ # type: (str, bool) -> Generator[Dict[str, Any], None, None]
""" Generate a unique sequence of bugs from given output directory.
Duplicates can be in a project if the same module was compiled multiple
times with different compiler options. These would be better to show in
the final report (cover) only once. """
- parser = parse_bug_html if html else parse_bug_plist
- pattern = '*.html' if html else '*.plist'
+ def empty(file_name):
+ return os.stat(file_name).st_size == 0
duplicate = duplicate_check(
lambda bug: '{bug_line}.{bug_path_length}:{bug_file}'.format(**bug))
- bugs = itertools.chain.from_iterable(
- # parser creates a bug generator not the bug itself
- parser(filename)
- for filename in glob.iglob(os.path.join(output_dir, pattern)))
+ # get the right parser for the job.
+ parser = parse_bug_html if html else parse_bug_plist
+ # get the input files, which are not empty.
+ pattern = os.path.join(output_dir, '*.html' if html else '*.plist')
+ bug_files = (file for file in glob.iglob(pattern) if not empty(file))
- return (bug for bug in bugs if not duplicate(bug))
+ for bug_file in bug_files:
+ for bug in parser(bug_file):
+ if not duplicate(bug):
+ yield bug
def parse_bug_plist(filename):