lean2/bin/leanutil.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (c) 2015 Microsoft Corporation. All rights reserved.
# Released under Apache 2.0 license as described in the file LICENSE.
#
# Authors: Soonho Kong, Leonardo de Moura
import os
import subprocess
import platform
g_lean_exec_name = "lean"
if platform.system() == "Windows" or platform.system().startswith("MSYS"):
g_lean_exec_name = "lean.exe"
if platform.system().startswith("MSYS"):
# In MSYS platform, realpath has a strange behavior.
# os.path.realpath("c:\a\b\c") => \:\a\b\c
g_leanutil_path = os.path.abspath(os.path.normpath(__file__))
else:
g_leanutil_path = os.path.abspath(os.path.realpath(__file__))
g_lean_bin_dir = os.path.dirname(g_leanutil_path)
g_lean_path = os.path.join(g_lean_bin_dir, g_lean_exec_name)
if not os.path.isfile(g_lean_path):
error("cannot find lean executable at " + os.path.abspath(g_lean_path))
class lean_exception(Exception):
def __init__(self, value):
self.value = value
def __str__(self):
return repr(self.value)
def normalize_drive_name(name):
if platform.system() == "Windows":
drive, path = os.path.splitdrive(name)
if drive == None:
return name
else:
# Leo: return drive.lower() + path
return path
else:
return name
def is_olean(fname):
return fname.endswith(".olean")
def is_lean(fname):
return fname.endswith(".lean")
def is_hlean(fname):
return fname.endswith(".hlean")
LEAN_KIND=0
HLEAN_KIND=1
OLEAN_KIND=2
def get_lean_file_kind(fname):
if is_lean(fname):
return LEAN_KIND
elif is_hlean(fname):
return HLEAN_KIND
elif is_olean(fname):
return OLEAN_KIND
else:
raise lean_exception("unknown file kind: " + fname)
def olean_to_lean(fname, kind):
if kind == LEAN_KIND:
return fname[:-5] + "lean"
elif kind == HLEAN_KIND:
return fname[:-5] + "hlean"
else:
raise lean_exception("unsupported file kind: " + kind)
def lean_to_olean(fname):
if is_lean(fname):
return fname[:-4] + "olean"
elif is_hlean(fname):
return fname[:-5] + "olean"
else:
raise lean_exception("file '%s' is not a lean source file" % fname)
def get_timestamp(fname):
try:
return os.path.getmtime(fname)
except OSError:
return 0
def is_uptodate(fname):
return get_timestamp(lean_to_olean(fname)) > get_timestamp(fname)
def lean_direct_deps(lean_file):
deps = []
proc = subprocess.Popen([g_lean_path, "--deps", lean_file],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
output = proc.communicate()[0].decode('utf-8').replace('\r\n', '\n')
if not proc.returncode == 0:
raise lean_exception(str(output))
for olean_file in output.strip().splitlines():
if olean_file:
deps.append(normalize_drive_name(os.path.abspath(olean_file)))
return deps
def lean_deps_core(lean_file, visited, deps, kind):
if not lean_file in visited:
visited[lean_file] = True
deps.append(lean_file)
for d in lean_direct_deps(lean_file):
d = str(d)
if is_olean(d):
d = olean_to_lean(d, kind)
lean_deps_core(d, visited, deps, kind)
def lean_deps(lean_file):
visited = dict()
deps = []
lean_deps_core(lean_file, visited, deps, get_lean_file_kind(lean_file))
return deps
if __name__ == "__main__":
for fname in lean_deps("/Users/leodemoura/projects/lean/library/data/nat/default.lean"):
print("%s is ok: %s" % (fname, is_uptodate(fname)))