zinovy.nis updated this revision to Diff 143052.
zinovy.nis added a comment.
- Updated docs.
https://reviews.llvm.org/D45776
Files:
docs/clang-tidy/index.rst
test/clang-tidy/check_clang_tidy.cpp
test/clang-tidy/check_clang_tidy.py
Index: test/clang-tidy/check_clang_tidy.py
===================================================================
--- test/clang-tidy/check_clang_tidy.py
+++ test/clang-tidy/check_clang_tidy.py
@@ -42,6 +42,7 @@
parser.add_argument('-expect-clang-tidy-error', action='store_true')
parser.add_argument('-resource-dir')
parser.add_argument('-assume-filename')
+ parser.add_argument('-check-suffix', default='')
parser.add_argument('input_file_name')
parser.add_argument('check_name')
parser.add_argument('temp_file_name')
@@ -70,6 +71,13 @@
clang_tidy_extra_args.extend(
['-fobjc-abi-version=2', '-fobjc-arc'])
+ if args.check_suffix and not re.match('^[A-Z0-9\-]+$', args.check_suffix):
+ sys.exit('Only A..Z, 0..9 and "-" are allowed in check suffix, but "%s" was given' % (args.check_suffix))
+
+ file_check_suffix = ('-' + args.check_suffix) if args.check_suffix else ''
+ check_fixes_prefix = 'CHECK-FIXES' + file_check_suffix
+ check_messages_prefix = 'CHECK-MESSAGES' + file_check_suffix
+
# Tests should not rely on STL being available, and instead provide mock
# implementations of relevant APIs.
clang_tidy_extra_args.append('-nostdinc++')
@@ -80,17 +88,17 @@
with open(input_file_name, 'r') as input_file:
input_text = input_file.read()
- has_check_fixes = input_text.find('CHECK-FIXES') >= 0
- has_check_messages = input_text.find('CHECK-MESSAGES') >= 0
+ has_check_fixes = check_fixes_prefix in input_text
+ has_check_messages = check_messages_prefix in input_text
if not has_check_fixes and not has_check_messages:
- sys.exit('Neither CHECK-FIXES nor CHECK-MESSAGES found in the input')
+ sys.exit('Neither %s nor %s found in the input' % (check_fixes_prefix, check_messages_prefix) )
# Remove the contents of the CHECK lines to avoid CHECKs matching on
# themselves. We need to keep the comments to preserve line numbers while
# avoiding empty lines which could potentially trigger formatting-related
# checks.
- cleaned_test = re.sub('// *CHECK-[A-Z-]*:[^\r\n]*', '//', input_text)
+ cleaned_test = re.sub('// *CHECK-[A-Z0-9\-]*:[^\r\n]*', '//', input_text)
write_file(temp_file_name, cleaned_test)
@@ -128,7 +136,7 @@
try:
subprocess.check_output(
['FileCheck', '-input-file=' + temp_file_name, input_file_name,
- '-check-prefix=CHECK-FIXES', '-strict-whitespace'],
+ '-check-prefix=' + check_fixes_prefix, '-strict-whitespace'],
stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
print('FileCheck failed:\n' + e.output.decode())
@@ -140,7 +148,7 @@
try:
subprocess.check_output(
['FileCheck', '-input-file=' + messages_file, input_file_name,
- '-check-prefix=CHECK-MESSAGES',
+ '-check-prefix=' + check_messages_prefix,
'-implicit-check-not={{warning|error}}:'],
stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
Index: test/clang-tidy/check_clang_tidy.cpp
===================================================================
--- test/clang-tidy/check_clang_tidy.cpp
+++ test/clang-tidy/check_clang_tidy.cpp
@@ -0,0 +1,20 @@
+// RUN: %check_clang_tidy %s misc-unused-using-decls %t -check-suffix=USING-A -- -DUSING_A
+// RUN: %check_clang_tidy %s misc-unused-using-decls %t -check-suffix=USING-B -- -DUSING_B
+// RUN: %check_clang_tidy %s misc-unused-using-decls %t
+namespace a {class A {}; class B {}; class C {}; }
+namespace b {
+#if defined(USING_A)
+using a::A;
+#elif defined(USING_B)
+using a::B;
+#else
+using a::C;
+#endif
+}
+namespace c {}
+// CHECK-MESSAGES-USING-A: :[[@LINE-8]]:10: warning: using decl 'A' {{.*}}
+// CHECK-MESSAGES-USING-B: :[[@LINE-7]]:10: warning: using decl 'B' {{.*}}
+// CHECK-MESSAGES: :[[@LINE-6]]:10: warning: using decl 'C' {{.*}}
+// CHECK-FIXES-USING-A-NOT: using a::A;$
+// CHECK-FIXES-USING-B-NOT: using a::B;$
+// CHECK-FIXES-NOT: using a::C;$
Index: docs/clang-tidy/index.rst
===================================================================
--- docs/clang-tidy/index.rst
+++ docs/clang-tidy/index.rst
@@ -673,6 +673,27 @@
// CHECK-FIXES: int b = a;
}
+To check more than one scenario in the same test file use
+``-check-suffix=SUFFIX_NAME`` on ``check_clang_tidy.py`` command line.
+With ``-check-suffix=SUFFIX_NAME`` you need to replace your ``CHECK-*``
+directives with ``CHECK-MESSAGES-SUFFIX-NAME`` and ``CHECK-FIXES-SUFFIX-NAME``.
+
+Here's an example:
+
+.. code-block:: c++
+
+ // RUN: %check_clang_tidy %s misc-unused-using-decls %t -check-suffix=USING-A -- -DUSING_A
+ // RUN: %check_clang_tidy %s misc-unused-using-decls %t -check-suffix=USING-B -- -DUSING_B
+ // RUN: %check_clang_tidy %s misc-unused-using-decls %t
+ ...
+ // CHECK-MESSAGES-USING-A: :[[@LINE-8]]:10: warning: using decl 'A' {{.*}}
+ // CHECK-MESSAGES-USING-B: :[[@LINE-7]]:10: warning: using decl 'B' {{.*}}
+ // CHECK-MESSAGES: :[[@LINE-6]]:10: warning: using decl 'C' {{.*}}
+ // CHECK-FIXES-USING-A-NOT: using a::A;$
+ // CHECK-FIXES-USING-B-NOT: using a::B;$
+ // CHECK-FIXES-NOT: using a::C;$
+
+
There are many dark corners in the C++ language, and it may be difficult to make
your check work perfectly in all cases, especially if it issues fix-it hints. The
most frequent pitfalls are macros and templates:
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