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modulecompiler.py
142 lines (116 loc) · 4.6 KB
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modulecompiler.py
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# Author: Martin Matusiak <numerodix@gmail.com>
# Licensed under the GNU Public License, version 3.
import compiler
import compiler.ast as ast
import os
import sys
from aspect import Aspect, Worklist
import astpp
import filepath
import visitors
class ModuleCompiler(compiler.pycodegen.Module, filepath.Module):
def __init__(self, filename, basepath=None):
self.filename = filename
self.source = filename
self.tree = None
if basepath:
base = os.path.commonprefix([self.file_path, basepath])
localfile = self.file[1+len(base):]
(self.local_name, _) = os.path.splitext(localfile)
def _set_filename(self, value):
self.file = value
def _get_filename(self):
return self.file
filename = property(fget=_get_filename, fset=_set_filename)
source = property(fget=_get_filename, fset=_set_filename)
def get_tree(self):
"""Parse on demand"""
if not self._tree:
self.parse()
return self._tree
def _get_tree(self):
return self.tree
def set_tree(self, tree):
self._tree = tree
tree = property(fget=get_tree, fset=set_tree)
def parse(self):
tree = compiler.parse(open(self.file).read(), self.mode)
compiler.misc.set_filename(self.file, tree)
compiler.syntax.check(tree)
self.tree = tree
def display(self):
print astpp.SimpleTreePPrinter().display(self.tree)
# print astpp.TreePPrinter(self.file_name).display(self.tree)
def find_names(self):
namefinder = visitors.NameFinderVisitor()
compiler.walk(self.tree, namefinder)
return namefinder.get_names()
def find_imports(self):
namefinder = visitors.ImportFinderVisitor()
compiler.walk(self.tree, namefinder)
return namefinder.get_names()
def transform(self, worklist):
trans = visitors.TransformerVisitor.PHASE_TRANSFORM
post = visitors.TransformerVisitor.PHASE_POST
sys.stderr.write("Transforming module %s\n" % self.file)
visitor = visitors.TransformerVisitor(trans, self.local_name, worklist)
compiler.walk(self.tree, visitor)
if visitor.matched_advices:
worklist = visitor.matched_advices
visitor = visitors.TransformerVisitor(post, self.local_name, worklist)
compiler.walk(self.tree, visitor)
compiler.syntax.check(self.tree) # ?
return True
def writepyc(self, verbose=False):
if verbose:
self.display()
self.compile(display=False)
self.dump(open(self.pycfile, 'w'))
def chase_imports(self):
modules = set()
queue = [self.file_name_root]
for name in queue:
try:
modobj = filepath.try_import(module_name=name)
file = getattr(modobj, '__file__', None)
if not file:
sys.stderr.write("Module object %s missing __name__ att\n" % name)
raise Exception
(base, _) = os.path.splitext(file)
m = ModuleCompiler(base + '.py')
if file not in (m.file, m.pycfile):
sys.stderr.write("Module cannot be parsed: %s\n" % file)
raise Exception
if not os.path.exists(m.file):
sys.stderr.write("Module does not exist: %s\n" % m.file)
raise Exception
if not filepath.is_writable(m.pycfile):
sys.stderr.write("Path cannot be written to: %s\n" % m.pycfile)
else:
modules.add(m)
found = m.find_imports()
for f in found:
if f not in queue:
queue.append(f)
except:
raise
return list(modules)
def load_spec(self, file):
spec = filepath.try_import(module_file=file)
aspnames = (aspname for aspname in spec.__all__)
aspects = (getattr(spec, aspname) for aspname in aspnames)
return Worklist(*aspects)
def find_modules(self, path):
modules = []
for (dir, dirs, files) in os.walk(path):
for f in files:
f = os.path.join(dir, f)
(_, e) = os.path.splitext(f)
if e == '.py':
pyc = f + 'c'
if not filepath.is_writable(pyc):
sys.stderr.write("Path cannot be written to: %s\n" % pyc)
else:
modules.append(f)
modules = list(set(modules))
return modules