Reland "Adding PRESUBMIT check to avoid mixing C, C++ and Objc-C/Obj-C++.""
This reverts commit 034a6b8a4cdf151ae7377c87c5b2b6156d658173.
Reason for revert: Trying to fix the issue of rtc_base:rtc_base which has 2 kind of source files but in exclusive if branches.
Original change's description:
> Revert "Adding PRESUBMIT check to avoid mixing C, C++ and Objc-C/Obj-C++."
>
> This reverts commit 0c15c5332fea2bbf5fe29dd806f9f4e606eeb9b8.
>
> Reason for revert: This causes problems in this moment. I have to fix a target in rtc_base before landing this presubmit check.
>
> Original change's description:
> > Adding PRESUBMIT check to avoid mixing C, C++ and Objc-C/Obj-C++.
> >
> > The error message will be something like:
> >
> > GN targets cannot mix .c (or .cc) and .m (or .mm) source files.
> > Please create a separate target for each collection of sources.
> > Mixed sources:
> > {
> > BUILD_GN_PATH: [
> > [
> > TARGET_NAME,
> > [
> > SOURCES
> > ]
> > ],
> > ...
> > ],
> > ...
> > }
> >
> > Bug: webrtc:7743
> > Change-Id: I45dd2c621b830e5aeb081fa8d17c9497a49c2554
> > Reviewed-on: https://webrtc-review.googlesource.com/1980
> > Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
> > Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
> > Cr-Commit-Position: refs/heads/master@{#19897}
>
> TBR=kjellander@webrtc.org,mbonadei@webrtc.org
>
> Change-Id: I73ff609b0140719473afd36ead1632e5cc3b41f6
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: webrtc:7743
> Reviewed-on: https://webrtc-review.googlesource.com/2180
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#19898}
TBR=kjellander@webrtc.org,mbonadei@webrtc.org
Change-Id: I18dbb5a6a01ac2a184446542c29b25a3e33508ea
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:7743
Reviewed-on: https://webrtc-review.googlesource.com/2181
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19900}diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index 37047d4..88e4fb8 100755
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -11,6 +11,7 @@
import re
import subprocess
import sys
+from collections import defaultdict
# Files and directories that are *skipped* by cpplint in the presubmit script.
@@ -67,6 +68,7 @@
'modules/audio_device/include',
'pc',
)
+
# These directories should not be used but are maintained only to avoid breaking
# some legacy downstream code.
LEGACY_API_DIRS = (
@@ -90,8 +92,22 @@
'system_wrappers/include',
'voice_engine/include',
)
+
API_DIRS = NATIVE_API_DIRS[:] + LEGACY_API_DIRS[:]
+# TARGET_RE matches a GN target, and extracts the target name and the contents.
+TARGET_RE = re.compile(r'(?P<indent>\s*)\w+\("(?P<target_name>\w+)"\) {'
+ r'(?P<target_contents>.*?)'
+ r'(?P=indent)}',
+ re.MULTILINE | re.DOTALL)
+
+# SOURCES_RE matches a block of sources inside a GN target.
+SOURCES_RE = re.compile(r'sources \+?= \[(?P<sources>.*?)\]',
+ re.MULTILINE | re.DOTALL)
+
+# FILE_PATH_RE matchies a file path.
+FILE_PATH_RE = re.compile(r'"(?P<file_path>(\w|\/)+)(?P<extension>\.\w+)"')
+
def _RunCommand(command, cwd):
"""Runs a command and returns the output from that command."""
@@ -297,33 +313,70 @@
items=violating_gn_files)]
return []
-def CheckNoMixingCAndCCSources(input_api, gn_files, output_api):
- # Disallow mixing .c and .cc source files in the same target.
- source_pattern = input_api.re.compile(r' +sources \+?= \[(.*?)\]',
- re.MULTILINE | re.DOTALL)
- file_pattern = input_api.re.compile(r'"(.*)"')
- violating_gn_files = dict()
+def CheckNoMixingSources(input_api, gn_files, output_api):
+ """Disallow mixing C, C++ and Obj-C/Obj-C++ in the same target.
+
+ See bugs.webrtc.org/7743 for more context.
+ """
+ def _MoreThanOneSourceUsed(*sources_lists):
+ sources_used = 0
+ for source_list in sources_lists:
+ if len(source_list):
+ sources_used += 1
+ return sources_used > 1
+
+ errors = defaultdict(lambda: [])
for gn_file in gn_files:
- contents = input_api.ReadFile(gn_file)
- for source_block_match in source_pattern.finditer(contents):
+ gn_file_content = input_api.ReadFile(gn_file)
+ for target_match in TARGET_RE.finditer(gn_file_content):
+ # list_of_sources is a list of tuples of the form
+ # (c_files, cc_files, objc_files) that keeps track of all the sources
+ # defined in a target. A GN target can have more that on definition of
+ # sources (since it supports if/else statements).
+ # E.g.:
+ # rtc_static_library("foo") {
+ # if (is_win) {
+ # sources = [ "foo.cc" ]
+ # } else {
+ # sources = [ "foo.mm" ]
+ # }
+ # }
+ # This is allowed and the presubmit check should support this case.
+ list_of_sources = []
c_files = []
cc_files = []
- for file_list_match in file_pattern.finditer(source_block_match.group(1)):
- source_file = file_list_match.group(1)
- if source_file.endswith('.c'):
- c_files.append(source_file)
- if source_file.endswith('.cc'):
- cc_files.append(source_file)
- if c_files and cc_files:
- violating_gn_files[gn_file.LocalPath()] = sorted(c_files + cc_files)
- if violating_gn_files:
+ objc_files = []
+ target_name = target_match.group('target_name')
+ target_contents = target_match.group('target_contents')
+ for sources_match in SOURCES_RE.finditer(target_contents):
+ if '+=' not in sources_match.group(0):
+ if c_files or cc_files or objc_files:
+ list_of_sources.append((c_files, cc_files, objc_files))
+ c_files = []
+ cc_files = []
+ objc_files = []
+ for file_match in FILE_PATH_RE.finditer(sources_match.group(1)):
+ file_path = file_match.group('file_path')
+ extension = file_match.group('extension')
+ if extension == '.c':
+ c_files.append(file_path + extension)
+ if extension == '.cc':
+ cc_files.append(file_path + extension)
+ if extension in ['.m', '.mm']:
+ objc_files.append(file_path + extension)
+ list_of_sources.append((c_files, cc_files, objc_files))
+ for c_files_list, cc_files_list, objc_files_list in list_of_sources:
+ if _MoreThanOneSourceUsed(c_files_list, cc_files_list, objc_files_list):
+ all_sources = sorted(c_files_list + cc_files_list + objc_files_list)
+ errors[gn_file.LocalPath()].append((target_name, all_sources))
+ if errors:
return [output_api.PresubmitError(
- 'GN targets cannot mix .cc and .c source files. Please create a '
- 'separate target for each collection of sources.\n'
+ 'GN targets cannot mix .c, .cc and .m (or .mm) source files.\n'
+ 'Please create a separate target for each collection of sources.\n'
'Mixed sources: \n'
'%s\n'
- 'Violating GN files:' % json.dumps(violating_gn_files, indent=2),
- items=violating_gn_files.keys())]
+ 'Violating GN files:\n%s\n' % (json.dumps(errors, indent=2),
+ '\n'.join(errors.keys())))]
return []
def CheckNoPackageBoundaryViolations(input_api, gn_files, output_api):
@@ -350,9 +403,9 @@
result = []
if gn_files:
result.extend(CheckNoSourcesAbove(input_api, gn_files, output_api))
- result.extend(CheckNoMixingCAndCCSources(input_api, gn_files, output_api))
- result.extend(CheckNoPackageBoundaryViolations(
- input_api, gn_files, output_api))
+ result.extend(CheckNoMixingSources(input_api, gn_files, output_api))
+ result.extend(CheckNoPackageBoundaryViolations(input_api, gn_files,
+ output_api))
return result
def CheckUnwantedDependencies(input_api, output_api):
