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#! /usr/bin/env python
# -*- coding: utf-8 -*-
"""
Part of the astor library for Python AST manipulation.
License: 3-clause BSD
Copyright (c) 2015 Patrick Maupin
This module reads the strings generated by build_expressions,
and runs them through the Python interpreter.
For strings that are suboptimal (too many spaces, etc.),
it simply dumps them to a miscompare file.
For strings that seem broken (do not parse after roundtrip)
or are maybe too compressed, it dumps information to the console.
This module does not take too long to execute; however, the
underlying build_expressions module takes forever, so this
should not be part of the automated regressions.
"""
import sys
import ast
import astor
try:
import importlib
except ImportError:
try:
import all_expr_2_6 as mymod
except ImportError:
print("Expression list does not exist -- building")
from . import build_expressions
build_expressions.makelib()
print("Expression list built")
import all_expr_2_6 as mymod
else:
mymodname = 'all_expr_%s_%s' % sys.version_info[:2]
try:
mymod = importlib.import_module(mymodname)
except ImportError:
print("Expression list does not exist -- building")
from . import build_expressions
build_expressions.makelib()
print("Expression list built")
mymod = importlib.import_module(mymodname)
def checklib():
print("Checking expressions")
parse = ast.parse
dump_tree = astor.dump_tree
to_source = astor.to_source
with open('mismatch_%s_%s.txt' % sys.version_info[:2], 'wb') as f:
for srctxt in mymod.all_expr.strip().splitlines():
srcast = parse(srctxt)
dsttxt = to_source(srcast)
if dsttxt != srctxt:
srcdmp = dump_tree(srcast)
try:
dstast = parse(dsttxt)
except SyntaxError:
bad = True
dstdmp = 'aborted'
else:
dstdmp = dump_tree(dstast)
bad = srcdmp != dstdmp
if bad or len(dsttxt) < len(srctxt):
print(srctxt, dsttxt)
if bad:
print('****************** Original')
print(srcdmp)
print('****************** Extra Crispy')
print(dstdmp)
print('******************')
print()
print()
f.write(('%s %s\n' % (repr(srctxt),
repr(dsttxt))).encode('utf-8'))
if __name__ == '__main__':
checklib()
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