| # Copyright 2019 The ANGLE Project Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| """Top-level presubmit script for code generation. |
| |
| See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts |
| for more details on the presubmit API built into depot_tools. |
| """ |
| |
| import os |
| import re |
| import shutil |
| import subprocess |
| import sys |
| import tempfile |
| |
| # Fragment of a regular expression that matches C/C++ and Objective-C++ implementation files and headers. |
| _IMPLEMENTATION_AND_HEADER_EXTENSIONS = r'\.(c|cc|cpp|cxx|mm|h|hpp|hxx)$' |
| |
| # Fragment of a regular expression that matches C++ and Objective-C++ header files. |
| _HEADER_EXTENSIONS = r'\.(h|hpp|hxx)$' |
| |
| _PRIMARY_EXPORT_TARGETS = [ |
| '//:libEGL', |
| '//:libGLESv1_CM', |
| '//:libGLESv2', |
| '//:translator', |
| ] |
| |
| |
| def _CheckCommitMessageFormatting(input_api, output_api): |
| |
| def _IsLineBlank(line): |
| return line.isspace() or line == "" |
| |
| def _PopBlankLines(lines, reverse=False): |
| if reverse: |
| while len(lines) > 0 and _IsLineBlank(lines[-1]): |
| lines.pop() |
| else: |
| while len(lines) > 0 and _IsLineBlank(lines[0]): |
| lines.pop(0) |
| |
| def _IsTagLine(line): |
| return ":" in line |
| |
| def _SplitIntoMultipleCommits(description_text): |
| paragraph_split_pattern = r"((?m)^\s*$\n)" |
| multiple_paragraphs = re.split(paragraph_split_pattern, description_text) |
| multiple_commits = [""] |
| change_id_pattern = re.compile(r"(?m)^Change-Id: [a-zA-Z0-9]*$") |
| for paragraph in multiple_paragraphs: |
| multiple_commits[-1] += paragraph |
| if change_id_pattern.search(paragraph): |
| multiple_commits.append("") |
| if multiple_commits[-1] == "": |
| multiple_commits.pop() |
| return multiple_commits |
| |
| def _CheckTabInCommit(lines): |
| return all([line.find("\t") == -1 for line in lines]) |
| |
| allowlist_strings = ['Revert "', 'Roll ', 'Reland ', 'Re-land '] |
| summary_linelength_warning_lower_limit = 65 |
| summary_linelength_warning_upper_limit = 70 |
| description_linelength_limit = 72 |
| |
| git_output = input_api.change.DescriptionText() |
| |
| multiple_commits = _SplitIntoMultipleCommits(git_output) |
| errors = [] |
| |
| for k in range(len(multiple_commits)): |
| commit_msg_lines = multiple_commits[k].splitlines() |
| commit_number = len(multiple_commits) - k |
| commit_tag = "Commit " + str(commit_number) + ":" |
| commit_msg_line_numbers = {} |
| for i in range(len(commit_msg_lines)): |
| commit_msg_line_numbers[commit_msg_lines[i]] = i + 1 |
| _PopBlankLines(commit_msg_lines, True) |
| _PopBlankLines(commit_msg_lines, False) |
| allowlisted = False |
| if len(commit_msg_lines) > 0: |
| for allowlist_string in allowlist_strings: |
| if commit_msg_lines[0].startswith(allowlist_string): |
| allowlisted = True |
| break |
| if allowlisted: |
| continue |
| |
| if not _CheckTabInCommit(commit_msg_lines): |
| errors.append( |
| output_api.PresubmitError(commit_tag + "Tabs are not allowed in commit message.")) |
| |
| # the tags paragraph is at the end of the message |
| # the break between the tags paragraph is the first line without ":" |
| # this is sufficient because if a line is blank, it will not have ":" |
| last_paragraph_line_count = 0 |
| while len(commit_msg_lines) > 0 and _IsTagLine(commit_msg_lines[-1]): |
| last_paragraph_line_count += 1 |
| commit_msg_lines.pop() |
| if last_paragraph_line_count == 0: |
| errors.append( |
| output_api.PresubmitError( |
| commit_tag + |
| "Please ensure that there are tags (e.g., Bug:, Test:) in your description.")) |
| if len(commit_msg_lines) > 0: |
| if not _IsLineBlank(commit_msg_lines[-1]): |
| output_api.PresubmitError(commit_tag + |
| "Please ensure that there exists 1 blank line " + |
| "between tags and description body.") |
| else: |
| # pop the blank line between tag paragraph and description body |
| commit_msg_lines.pop() |
| if len(commit_msg_lines) > 0 and _IsLineBlank(commit_msg_lines[-1]): |
| errors.append( |
| output_api.PresubmitError( |
| commit_tag + 'Please ensure that there exists only 1 blank line ' |
| 'between tags and description body.')) |
| # pop all the remaining blank lines between tag and description body |
| _PopBlankLines(commit_msg_lines, True) |
| if len(commit_msg_lines) == 0: |
| errors.append( |
| output_api.PresubmitError(commit_tag + |
| 'Please ensure that your description summary' |
| ' and description body are not blank.')) |
| continue |
| |
| if summary_linelength_warning_lower_limit <= len(commit_msg_lines[0]) \ |
| <= summary_linelength_warning_upper_limit: |
| errors.append( |
| output_api.PresubmitPromptWarning( |
| commit_tag + "Your description summary should be on one line of " + |
| str(summary_linelength_warning_lower_limit - 1) + " or less characters.")) |
| elif len(commit_msg_lines[0]) > summary_linelength_warning_upper_limit: |
| errors.append( |
| output_api.PresubmitError( |
| commit_tag + "Please ensure that your description summary is on one line of " + |
| str(summary_linelength_warning_lower_limit - 1) + " or less characters.")) |
| commit_msg_lines.pop(0) # get rid of description summary |
| if len(commit_msg_lines) == 0: |
| continue |
| if not _IsLineBlank(commit_msg_lines[0]): |
| errors.append( |
| output_api.PresubmitError(commit_tag + |
| 'Please ensure the summary is only 1 line and ' |
| 'there is 1 blank line between the summary ' |
| 'and description body.')) |
| else: |
| commit_msg_lines.pop(0) # pop first blank line |
| if len(commit_msg_lines) == 0: |
| continue |
| if _IsLineBlank(commit_msg_lines[0]): |
| errors.append( |
| output_api.PresubmitError(commit_tag + |
| 'Please ensure that there exists only 1 blank line ' |
| 'between description summary and description body.')) |
| # pop all the remaining blank lines between |
| # description summary and description body |
| _PopBlankLines(commit_msg_lines) |
| |
| # loop through description body |
| while len(commit_msg_lines) > 0: |
| line = commit_msg_lines.pop(0) |
| # lines starting with 4 spaces or lines without space(urls) |
| # are exempt from length check |
| if line.startswith(" ") or " " not in line: |
| continue |
| if len(line) > description_linelength_limit: |
| errors.append( |
| output_api.PresubmitError( |
| commit_tag + 'Line ' + str(commit_msg_line_numbers[line]) + |
| ' is too long.\n' + '"' + line + '"\n' + 'Please wrap it to ' + |
| str(description_linelength_limit) + ' characters. ' + |
| "Lines without spaces or lines starting with 4 spaces are exempt.")) |
| break |
| return errors |
| |
| |
| def _CheckChangeHasBugField(input_api, output_api): |
| """Requires that the changelist have a Bug: field from a known project.""" |
| bugs = input_api.change.BugsFromDescription() |
| if not bugs: |
| return [ |
| output_api.PresubmitError('Please ensure that your description contains:\n' |
| '"Bug: angleproject:[bug number]"\n' |
| 'directly above the Change-Id tag.') |
| ] |
| |
| # The bug must be in the form of "project:number". None is also accepted, which is used by |
| # rollers as well as in very minor changes. |
| if len(bugs) == 1 and bugs[0] == 'None': |
| return [] |
| |
| projects = [ |
| 'angleproject:', 'chromium:', 'dawn:', 'fuchsia:', 'skia:', 'swiftshader:', 'tint:', 'b/' |
| ] |
| bug_regex = re.compile(r"([a-z]+[:/])(\d+)") |
| errors = [] |
| extra_help = None |
| |
| for bug in bugs: |
| if bug == 'None': |
| errors.append( |
| output_api.PresubmitError('Invalid bug tag "None" in presence of other bug tags.')) |
| continue |
| |
| match = re.match(bug_regex, bug) |
| if match == None or bug != match.group(0) or match.group(1) not in projects: |
| errors.append(output_api.PresubmitError('Incorrect bug tag "' + bug + '".')) |
| if not extra_help: |
| extra_help = output_api.PresubmitError('Acceptable format is:\n\n' |
| ' Bug: project:bugnumber\n\n' |
| 'Acceptable projects are:\n\n ' + |
| '\n '.join(projects)) |
| |
| if extra_help: |
| errors.append(extra_help) |
| |
| return errors |
| |
| |
| def _CheckCodeGeneration(input_api, output_api): |
| |
| class Msg(output_api.PresubmitError): |
| """Specialized error message""" |
| |
| def __init__(self, message): |
| super(output_api.PresubmitError, self).__init__( |
| message, |
| long_text='Please ensure your ANGLE repositiory is synced to tip-of-tree\n' |
| 'and all ANGLE DEPS are fully up-to-date by running gclient sync.\n' |
| '\n' |
| 'If that fails, run scripts/run_code_generation.py to refresh generated hashes.\n' |
| '\n' |
| 'If you are building ANGLE inside Chromium you must bootstrap ANGLE\n' |
| 'before gclient sync. See the DevSetup documentation for more details.\n') |
| |
| code_gen_path = input_api.os_path.join(input_api.PresubmitLocalPath(), |
| 'scripts/run_code_generation.py') |
| cmd_name = 'run_code_generation' |
| cmd = [input_api.python_executable, code_gen_path, '--verify-no-dirty'] |
| test_cmd = input_api.Command(name=cmd_name, cmd=cmd, kwargs={}, message=Msg) |
| if input_api.verbose: |
| print('Running ' + cmd_name) |
| return input_api.RunTests([test_cmd]) |
| |
| |
| # Taken directly from Chromium's PRESUBMIT.py |
| def _CheckNewHeaderWithoutGnChange(input_api, output_api): |
| """Checks that newly added header files have corresponding GN changes. |
| Note that this is only a heuristic. To be precise, run script: |
| build/check_gn_headers.py. |
| """ |
| |
| def headers(f): |
| return input_api.FilterSourceFile(f, files_to_check=(r'.+%s' % _HEADER_EXTENSIONS,)) |
| |
| new_headers = [] |
| for f in input_api.AffectedSourceFiles(headers): |
| if f.Action() != 'A': |
| continue |
| new_headers.append(f.LocalPath()) |
| |
| def gn_files(f): |
| return input_api.FilterSourceFile(f, files_to_check=(r'.+\.gn',)) |
| |
| all_gn_changed_contents = '' |
| for f in input_api.AffectedSourceFiles(gn_files): |
| for _, line in f.ChangedContents(): |
| all_gn_changed_contents += line |
| |
| problems = [] |
| for header in new_headers: |
| basename = input_api.os_path.basename(header) |
| if basename not in all_gn_changed_contents: |
| problems.append(header) |
| |
| if problems: |
| return [ |
| output_api.PresubmitPromptWarning( |
| 'Missing GN changes for new header files', |
| items=sorted(problems), |
| long_text='Please double check whether newly added header files need ' |
| 'corresponding changes in gn or gni files.\nThis checking is only a ' |
| 'heuristic. Run build/check_gn_headers.py to be precise.\n' |
| 'Read https://crbug.com/661774 for more info.') |
| ] |
| return [] |
| |
| |
| def _CheckExportValidity(input_api, output_api): |
| outdir = tempfile.mkdtemp() |
| # shell=True is necessary on Windows, as otherwise subprocess fails to find |
| # either 'gn' or 'vpython3' even if they are findable via PATH. |
| use_shell = input_api.is_windows |
| try: |
| try: |
| subprocess.check_output(['gn', 'gen', outdir], shell=use_shell) |
| except subprocess.CalledProcessError as e: |
| return [ |
| output_api.PresubmitError( |
| 'Unable to run gn gen for export_targets.py: %s' % e.output) |
| ] |
| export_target_script = os.path.join(input_api.PresubmitLocalPath(), 'scripts', |
| 'export_targets.py') |
| try: |
| subprocess.check_output( |
| ['vpython3', export_target_script, outdir] + _PRIMARY_EXPORT_TARGETS, |
| stderr=subprocess.STDOUT, |
| shell=use_shell) |
| except subprocess.CalledProcessError as e: |
| if input_api.is_committing: |
| return [output_api.PresubmitError('export_targets.py failed: %s' % e.output)] |
| return [ |
| output_api.PresubmitPromptWarning( |
| 'export_targets.py failed, this may just be due to your local checkout: %s' % |
| e.output) |
| ] |
| return [] |
| finally: |
| shutil.rmtree(outdir) |
| |
| |
| def _CheckTabsInSourceFiles(input_api, output_api): |
| """Forbids tab characters in source files due to a WebKit repo requirement. """ |
| |
| def implementation_and_headers_including_third_party(f): |
| # Check third_party files too, because WebKit's checks don't make exceptions. |
| return input_api.FilterSourceFile( |
| f, |
| files_to_check=(r'.+%s' % _IMPLEMENTATION_AND_HEADER_EXTENSIONS,), |
| files_to_skip=[f for f in input_api.DEFAULT_FILES_TO_SKIP if not "third_party" in f]) |
| |
| files_with_tabs = [] |
| for f in input_api.AffectedSourceFiles(implementation_and_headers_including_third_party): |
| for (num, line) in f.ChangedContents(): |
| if '\t' in line: |
| files_with_tabs.append(f) |
| break |
| |
| if files_with_tabs: |
| return [ |
| output_api.PresubmitError( |
| 'Tab characters in source files.', |
| items=sorted(files_with_tabs), |
| long_text= |
| 'Tab characters are forbidden in ANGLE source files because WebKit\'s Subversion\n' |
| 'repository does not allow tab characters in source files.\n' |
| 'Please remove tab characters from these files.') |
| ] |
| return [] |
| |
| |
| # https://stackoverflow.com/a/196392 |
| def is_ascii(s): |
| return all(ord(c) < 128 for c in s) |
| |
| |
| def _CheckNonAsciiInSourceFiles(input_api, output_api): |
| """Forbids non-ascii characters in source files. """ |
| |
| def implementation_and_headers(f): |
| return input_api.FilterSourceFile( |
| f, files_to_check=(r'.+%s' % _IMPLEMENTATION_AND_HEADER_EXTENSIONS,)) |
| |
| files_with_non_ascii = [] |
| for f in input_api.AffectedSourceFiles(implementation_and_headers): |
| for (num, line) in f.ChangedContents(): |
| if not is_ascii(line): |
| files_with_non_ascii.append("%s: %s" % (f, line)) |
| break |
| |
| if files_with_non_ascii: |
| return [ |
| output_api.PresubmitError( |
| 'Non-ASCII characters in source files.', |
| items=sorted(files_with_non_ascii), |
| long_text='Non-ASCII characters are forbidden in ANGLE source files.\n' |
| 'Please remove non-ASCII characters from these files.') |
| ] |
| return [] |
| |
| |
| def CheckChangeOnUpload(input_api, output_api): |
| results = [] |
| results.extend(_CheckTabsInSourceFiles(input_api, output_api)) |
| results.extend(_CheckNonAsciiInSourceFiles(input_api, output_api)) |
| results.extend(_CheckCodeGeneration(input_api, output_api)) |
| results.extend(_CheckChangeHasBugField(input_api, output_api)) |
| results.extend(input_api.canned_checks.CheckChangeHasDescription(input_api, output_api)) |
| results.extend(_CheckNewHeaderWithoutGnChange(input_api, output_api)) |
| results.extend(_CheckExportValidity(input_api, output_api)) |
| results.extend( |
| input_api.canned_checks.CheckPatchFormatted( |
| input_api, output_api, result_factory=output_api.PresubmitError)) |
| results.extend(_CheckCommitMessageFormatting(input_api, output_api)) |
| return results |
| |
| |
| def CheckChangeOnCommit(input_api, output_api): |
| return CheckChangeOnUpload(input_api, output_api) |
