#! /usr/bin/env python3
import sys, os, re, urllib.request
latest_release = 19
clang_www_dir = os.path.dirname(__file__)
default_issue_list_path = os.path.join(clang_www_dir, 'cwg_index.html')
issue_list_url = "https://raw.githubusercontent.com/cplusplus/CWG/gh-pages/issues/cwg_index.html"
output = os.path.join(clang_www_dir, 'cxx_dr_status.html')
dr_test_dir = os.path.join(clang_www_dir, '../test/CXX/drs')
class DR:
def __init__(self, section, issue, url, status, title):
self.section, self.issue, self.url, self.status, self.title = \
section, issue, url, status, title
def __repr__(self):
return '%s (%s): %s' % (self.issue, self.status, self.title)
def parse(dr):
try:
section, issue_link, status, liaison, title = [
col.split('>', 1)[1].split('</TD>')[0]
for col in dr.split('</TR>', 1)[0].split('<TD')[1:]
]
except Exception as ex:
print(f"Parse error: {ex}\n{dr}", file=sys.stderr)
sys.exit(1)
_, url, issue = issue_link.split('"', 2)
url = url.strip()
issue = int(issue.split('>', 1)[1].split('<', 1)[0])
title = title.replace('<issue_title>', '').replace('</issue_title>', '').replace('\r\n', '\n').strip()
return DR(section, issue, url, status, title)
def collect_tests():
status_re = re.compile(r'\bcwg([0-9]+): (.*)')
status_map = {}
for test_cpp in os.listdir(dr_test_dir):
if not test_cpp.endswith('.cpp'):
continue
test_cpp = os.path.join(dr_test_dir, test_cpp)
found_any = False;
for match in re.finditer(status_re, open(test_cpp, 'r').read()):
dr_number = int(match.group(1))
if dr_number in status_map:
print("error: Comment for cwg{} encountered more than once. Duplicate found in {}".format(dr_number, test_cpp))
sys.exit(1)
status_map[dr_number] = match.group(2)
found_any = True
if not found_any:
print("warning:%s: no '// cwg123: foo' comments in this file" % test_cpp, file=sys.stderr)
return status_map
def get_issues(path):
buffer = None
if not path and os.path.exists(default_issue_list_path):
path = default_issue_list_path
try:
if path is None:
print('Fetching issue list from {}'.format(issue_list_url))
with urllib.request.urlopen(issue_list_url) as f:
buffer = f.read().decode('utf-8')
else:
print('Opening issue list from file {}'.format(path))
with open(path, 'r') as f:
buffer = f.read()
except Exception as ex:
print('Unable to read the core issue list', file=sys.stderr)
print(ex, file=sys.stderr)
sys.exit(1)
return sorted((parse(dr) for dr in buffer.split('<TR>')[2:]),
key = lambda dr: dr.issue)
issue_list_path = None
if len(sys.argv) == 1:
pass
elif len(sys.argv) == 2:
issue_list_path = sys.argv[1]
else:
print('Usage: {} [<path to cwg_index.html>]'.format(sys.argv[0]), file=sys.stderr)
sys.exit(1)
status_map = collect_tests()
drs = get_issues(issue_list_path)
out_file = open(output, 'w')
out_file.write('''\
<!DOCTYPE html>
<!-- This file is auto-generated by make_cxx_dr_status. Do not modify. -->
<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Clang - C++ Defect Report Status</title>
<link type="text/css" rel="stylesheet" href="menu.css">
<link type="text/css" rel="stylesheet" href="content.css">
<style type="text/css">
.none { background-color: #FFCCCC }
.none-superseded { background-color: rgba(255, 204, 204, 0.65) }
.unknown { background-color: #EBCAFE }
.unknown-superseded { background-color: rgba(234, 200, 254, 0.65) }
.partial { background-color: #FFE0B0 }
.partial-superseded { background-color: rgba(255, 224, 179, 0.65) }
.unreleased { background-color: #FFFF99 }
.unreleased-superseded { background-color: rgba(255, 255, 153, 0.65) }
.full { background-color: #CCFF99 }
.full-superseded { background-color: rgba(214, 255, 173, 0.65) }
.na { background-color: #DDDDDD }
.na-superseded { background-color: rgba(222, 222, 222, 0.65) }
.open * { color: #AAAAAA }
.open-superseded * { color: rgba(171, 171, 171, 0.65) }
//.open { filter: opacity(0.2) }
tr:target { background-color: #FFFFBB }
th { background-color: #FFDDAA }
</style>
</head>
<body>
<!--#include virtual="menu.html.incl"-->
<div id="content">
<!--*************************************************************************-->
<h1>C++ Defect Report Support in Clang</h1>
<!--*************************************************************************-->
<h2 id="cxxdr">C++ defect report implementation status</h2>
<p>This page tracks which C++ defect reports are implemented within Clang.</p>
<table width="689" border="1" cellspacing="0">
<tr>
<th>Number</th>
<th>Status</th>
<th>Issue title</th>
<th>Available in Clang?</th>
</tr>''')
class AvailabilityError(RuntimeError):
pass
availability_error_occurred = False
def availability(issue):
status = status_map.get(issue, 'unknown')
unresolved_status = ''
proposed_resolution = ''
unresolved_status_match = re.search(r' (open|drafting|review|tentatively ready|ready)', status)
if unresolved_status_match:
unresolved_status = unresolved_status_match.group(1)
proposed_resolution_match = re.search(r' (open|drafting|review|tentatively ready|ready) (\d{4}-\d{2}(?:-\d{2})?|P\d{4}R\d+)$', status)
if proposed_resolution_match is None:
raise AvailabilityError('Issue {}: \'{}\' status should be followed by a paper number (P1234R5) or proposed resolution in YYYY-MM-DD format'.format(dr.issue, unresolved_status))
proposed_resolution = proposed_resolution_match.group(2)
status = status[:-1-len(proposed_resolution)]
status = status[:-1-len(unresolved_status)]
avail_suffix = ''
avail_style = ''
details = ''
if status.endswith(' c++11'):
status = status[:-6]
avail_suffix = ' (C++11 onwards)'
elif status.endswith(' c++14'):
status = status[:-6]
avail_suffix = ' (C++14 onwards)'
elif status.endswith(' c++17'):
status = status[:-6]
avail_suffix = ' (C++17 onwards)'
elif status.endswith(' c++20'):
status = status[:-6]
avail_suffix = ' (C++20 onwards)'
if status == 'unknown':
avail = 'Unknown'
avail_style = 'unknown'
elif re.match(r'^[0-9]+\.?[0-9]*', status):
if not proposed_resolution:
avail = 'Clang %s' % status
if float(status) > latest_release:
avail_style = 'unreleased'
else:
avail_style = 'full'
else:
avail = 'Not resolved'
details = f'Clang {status} implements {proposed_resolution} resolution'
elif status == 'yes':
if not proposed_resolution:
avail = 'Yes'
avail_style = 'full'
else:
avail = 'Not resolved'
details = f'Clang implements {proposed_resolution} resolution'
elif status == 'partial':
if not proposed_resolution:
avail = 'Partial'
avail_style = 'partial'
else:
avail = 'Not resolved'
details = f'Clang partially implements {proposed_resolution} resolution'
elif status == 'no':
if not proposed_resolution:
avail = 'No'
avail_style = 'none'
else:
avail = 'Not resolved'
details = f'Clang does not implement {proposed_resolution} resolution'
elif status == 'na':
avail = 'N/A'
avail_style = 'na'
elif status == 'na lib':
avail = 'N/A (Library DR)'
avail_style = 'na'
elif status == 'na abi':
avail = 'N/A (ABI constraint)'
avail_style = 'na'
elif status.startswith('sup '):
dup = status.split(' ', 1)[1]
if dup.startswith('P'):
avail = 'Superseded by <a href="https://wg21.link/%s">%s</a>' % (dup, dup)
avail_style = 'na'
else:
avail = 'Superseded by <a href="#%s">%s</a>' % (dup, dup)
try:
_, avail_style, _, _ = availability(int(dup))
avail_style += '-superseded'
except:
print("issue %s marked as sup %s" % (issue, dup), file=sys.stderr)
avail_style = 'none'
elif status.startswith('dup '):
dup = int(status.split(' ', 1)[1])
avail = 'Duplicate of <a href="#%s">%s</a>' % (dup, dup)
_, avail_style, _, _ = availability(dup)
else:
raise AvailabilityError('Unknown status %s for issue %s' % (status, dr.issue))
return (avail + avail_suffix, avail_style, unresolved_status, details)
count = {}
for dr in drs:
if dr.status in ('concepts',):
# This refers to the old ("C++0x") concepts feature, which was not part
# of any C++ International Standard or Technical Specification.
continue
elif dr.status == 'extension':
row_style = ' class="open"'
avail = 'Extension'
avail_style = ''
elif dr.status in ('open', 'drafting', 'review', 'tentatively ready', 'ready'):
row_style = ' class="open"'
try:
avail, avail_style, unresolved_status, details = availability(dr.issue)
except AvailabilityError as e:
availability_error_occurred = True
print(e.args[0])
continue
if avail == 'Unknown':
avail = 'Not resolved'
avail_style = ''
else:
if unresolved_status != dr.status:
availability_error_occurred = True
print("Issue %s is marked '%s', which differs from CWG index status '%s'" \
% (dr.issue, unresolved_status, dr.status))
continue
else:
row_style = ''
try:
avail, avail_style, unresolved_status, details = availability(dr.issue)
except AvailabilityError as e:
availability_error_occurred = True
print(e.args[0])
continue
if unresolved_status:
availability_error_occurred = True
print("Issue %s is marked '%s', even though it is resolved in CWG index" \
% (dr.issue, unresolved_status))
continue
if not avail.startswith('Sup') and not avail.startswith('Dup'):
count[avail] = count.get(avail, 0) + 1
if avail_style != '':
avail_style = ' class="{}"'.format(avail_style)
if details != '':
avail = f'''
<details>
<summary>{avail}</summary>
{details}
</details>'''
out_file.write(f'''
<tr{row_style} id="{dr.issue}">
<td><a href="https://cplusplus.github.io/CWG/issues/{dr.issue}.html">{dr.issue}</a></td>
<td>{dr.status}</td>
<td>{dr.title}</td>
<td{avail_style} align="center">{avail}</td>
</tr>''')
if availability_error_occurred:
exit(1)
for status, num in sorted(count.items()):
print("%s: %s" % (status, num), file=sys.stderr)
out_file.write('''\
</table>
</div>
</body>
</html>
''')
out_file.close()
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