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Diffstat (limited to 'lib/spack/external/pyqver3.py')
| -rwxr-xr-x | lib/spack/external/pyqver3.py | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/lib/spack/external/pyqver3.py b/lib/spack/external/pyqver3.py new file mode 100755 index 0000000000..b63576a064 --- /dev/null +++ b/lib/spack/external/pyqver3.py @@ -0,0 +1,248 @@ +#!/usr/bin/env python3 +# +# pyqver3.py +# by Greg Hewgill +# https://github.com/ghewgill/pyqver +# +# This software is provided 'as-is', without any express or implied +# warranty. In no event will the author be held liable for any damages +# arising from the use of this software. +# +# Permission is granted to anyone to use this software for any purpose, +# including commercial applications, and to alter it and redistribute it +# freely, subject to the following restrictions: +# +# 1. The origin of this software must not be misrepresented; you must not +# claim that you wrote the original software. If you use this software +# in a product, an acknowledgment in the product documentation would be +# appreciated but is not required. +# 2. Altered source versions must be plainly marked as such, and must not be +# misrepresented as being the original software. +# 3. This notice may not be removed or altered from any source distribution. +# +# Copyright (c) 2009-2013 Greg Hewgill http://hewgill.com +# +import ast +import platform +import sys + +StandardModules = { +# skip argparse now that it's in lib/spack/external +# "argparse": (3, 2), + "faulthandler": (3, 3), + "importlib": (3, 1), + "ipaddress": (3, 3), + "lzma": (3, 3), + "tkinter.ttk": (3, 1), + "unittest.mock": (3, 3), + "venv": (3, 3), +} + +Functions = { + "bytearray.maketrans": (3, 1), + "bytes.maketrans": (3, 1), + "bz2.open": (3, 3), + "collections.Counter": (3, 1), + "collections.OrderedDict": (3, 1), + "crypt.mksalt": (3, 3), + "email.generator.BytesGenerator": (3, 2), + "email.message_from_binary_file": (3, 2), + "email.message_from_bytes": (3, 2), + "functools.lru_cache": (3, 2), + "gzip.compress": (3, 2), + "gzip.decompress": (3, 2), + "inspect.getclosurevars": (3, 3), + "inspect.getgeneratorlocals": (3, 3), + "inspect.getgeneratorstate": (3, 2), + "itertools.combinations_with_replacement": (3, 1), + "itertools.compress": (3, 1), + "logging.config.dictConfig": (3, 2), + "logging.NullHandler": (3, 1), + "math.erf": (3, 2), + "math.erfc": (3, 2), + "math.expm1": (3, 2), + "math.gamma": (3, 2), + "math.isfinite": (3, 2), + "math.lgamma": (3, 2), + "math.log2": (3, 3), + "os.environb": (3, 2), + "os.fsdecode": (3, 2), + "os.fsencode": (3, 2), + "os.fwalk": (3, 3), + "os.getenvb": (3, 2), + "os.get_exec_path": (3, 2), + "os.getgrouplist": (3, 3), + "os.getpriority": (3, 3), + "os.getresgid": (3, 2), + "os.getresuid": (3, 2), + "os.get_terminal_size": (3, 3), + "os.getxattr": (3, 3), + "os.initgroups": (3, 2), + "os.listxattr": (3, 3), + "os.lockf": (3, 3), + "os.pipe2": (3, 3), + "os.posix_fadvise": (3, 3), + "os.posix_fallocate": (3, 3), + "os.pread": (3, 3), + "os.pwrite": (3, 3), + "os.readv": (3, 3), + "os.removexattr": (3, 3), + "os.replace": (3, 3), + "os.sched_get_priority_max": (3, 3), + "os.sched_get_priority_min": (3, 3), + "os.sched_getaffinity": (3, 3), + "os.sched_getparam": (3, 3), + "os.sched_getscheduler": (3, 3), + "os.sched_rr_get_interval": (3, 3), + "os.sched_setaffinity": (3, 3), + "os.sched_setparam": (3, 3), + "os.sched_setscheduler": (3, 3), + "os.sched_yield": (3, 3), + "os.sendfile": (3, 3), + "os.setpriority": (3, 3), + "os.setresgid": (3, 2), + "os.setresuid": (3, 2), + "os.setxattr": (3, 3), + "os.sync": (3, 3), + "os.truncate": (3, 3), + "os.waitid": (3, 3), + "os.writev": (3, 3), + "shutil.chown": (3, 3), + "shutil.disk_usage": (3, 3), + "shutil.get_archive_formats": (3, 3), + "shutil.get_terminal_size": (3, 3), + "shutil.get_unpack_formats": (3, 3), + "shutil.make_archive": (3, 3), + "shutil.register_archive_format": (3, 3), + "shutil.register_unpack_format": (3, 3), + "shutil.unpack_archive": (3, 3), + "shutil.unregister_archive_format": (3, 3), + "shutil.unregister_unpack_format": (3, 3), + "shutil.which": (3, 3), + "signal.pthread_kill": (3, 3), + "signal.pthread_sigmask": (3, 3), + "signal.sigpending": (3, 3), + "signal.sigtimedwait": (3, 3), + "signal.sigwait": (3, 3), + "signal.sigwaitinfo": (3, 3), + "socket.CMSG_LEN": (3, 3), + "socket.CMSG_SPACE": (3, 3), + "socket.fromshare": (3, 3), + "socket.if_indextoname": (3, 3), + "socket.if_nameindex": (3, 3), + "socket.if_nametoindex": (3, 3), + "socket.sethostname": (3, 3), + "ssl.match_hostname": (3, 2), + "ssl.RAND_bytes": (3, 3), + "ssl.RAND_pseudo_bytes": (3, 3), + "ssl.SSLContext": (3, 2), + "ssl.SSLEOFError": (3, 3), + "ssl.SSLSyscallError": (3, 3), + "ssl.SSLWantReadError": (3, 3), + "ssl.SSLWantWriteError": (3, 3), + "ssl.SSLZeroReturnError": (3, 3), + "stat.filemode": (3, 3), + "textwrap.indent": (3, 3), + "threading.get_ident": (3, 3), + "time.clock_getres": (3, 3), + "time.clock_gettime": (3, 3), + "time.clock_settime": (3, 3), + "time.get_clock_info": (3, 3), + "time.monotonic": (3, 3), + "time.perf_counter": (3, 3), + "time.process_time": (3, 3), + "types.new_class": (3, 3), + "types.prepare_class": (3, 3), +} + +def uniq(a): + if len(a) == 0: + return [] + else: + return [a[0]] + uniq([x for x in a if x != a[0]]) + +class NodeChecker(ast.NodeVisitor): + def __init__(self): + self.vers = dict() + self.vers[(3,0)] = [] + def add(self, node, ver, msg): + if ver not in self.vers: + self.vers[ver] = [] + self.vers[ver].append((node.lineno, msg)) + def visit_Call(self, node): + def rollup(n): + if isinstance(n, ast.Name): + return n.id + elif isinstance(n, ast.Attribute): + r = rollup(n.value) + if r: + return r + "." + n.attr + name = rollup(node.func) + if name: + v = Functions.get(name) + if v is not None: + self.add(node, v, name) + self.generic_visit(node) + def visit_Import(self, node): + for n in node.names: + v = StandardModules.get(n.name) + if v is not None: + self.add(node, v, n.name) + self.generic_visit(node) + def visit_ImportFrom(self, node): + v = StandardModules.get(node.module) + if v is not None: + self.add(node, v, node.module) + for n in node.names: + name = node.module + "." + n.name + v = Functions.get(name) + if v is not None: + self.add(node, v, name) + def visit_Raise(self, node): + if isinstance(node.cause, ast.Name) and node.cause.id == "None": + self.add(node, (3,3), "raise ... from None") + def visit_YieldFrom(self, node): + self.add(node, (3,3), "yield from") + +def get_versions(source, filename=None): + """Return information about the Python versions required for specific features. + + The return value is a dictionary with keys as a version number as a tuple + (for example Python 3.1 is (3,1)) and the value are a list of features that + require the indicated Python version. + """ + tree = ast.parse(source, filename=filename) + checker = NodeChecker() + checker.visit(tree) + return checker.vers + +def v33(source): + if sys.version_info >= (3, 3): + return qver(source) + else: + print("Not all features tested, run --test with Python 3.3", file=sys.stderr) + return (3, 3) + +def qver(source): + """Return the minimum Python version required to run a particular bit of code. + + >>> qver('print("hello world")') + (3, 0) + >>> qver("import importlib") + (3, 1) + >>> qver("from importlib import x") + (3, 1) + >>> qver("import tkinter.ttk") + (3, 1) + >>> qver("from collections import Counter") + (3, 1) + >>> qver("collections.OrderedDict()") + (3, 1) + >>> qver("import functools\\n@functools.lru_cache()\\ndef f(x): x*x") + (3, 2) + >>> v33("yield from x") + (3, 3) + >>> v33("raise x from None") + (3, 3) + """ + return max(get_versions(source).keys()) |