def operator(mod): op = ast.Add() if mod == 'or': op = ast.Or() if mod == '|': op = ast.Or() if mod == '||': op = ast.Or() if mod == 'and': op = ast.And() if mod == '&': op = ast.And() if mod == '&&': op = ast.And() if mod == 'plus': op = ast.Add() if mod == '+': op = ast.Add() if mod == '-': op = ast.Sub() if mod == 'minus': op = ast.Sub() if mod == 'times': op = ast.Mult() if mod == '*': op = ast.Mult() if mod == '**': op = ast.Pow() if mod == 'divide': op = ast.Div() if mod == 'divided': op = ast.Div() if mod == 'divided by': op = ast.Div() if mod == '/': op = ast.Div() if mod == '//': op = ast.FloorDiv() if mod == 'floor div': op = ast.FloorDiv() if mod == '%': op = ast.Mod() if mod == 'mod': op = ast.Mod() if mod == 'modulus': op = ast.Mod() if mod == 'modulo': op = ast.Mod() if mod == '^': op = ast.BitXor() if mod == 'xor': op = ast.BitXor() if mod == '<<': op = ast.LShift() if mod == '>>': op = ast.RShift() return op
def parse_rule_node(self, node):
tag = node.tag
if tag == 'Or':
return self.parse_bool_op(node, ast.Or())
elif tag == 'And':
return self.parse_bool_op(node, ast.And())
elif tag == 'Not':
expr = self.parse_bool_op(node, ast.Or())
return ast.UnaryOp(ast.Not(), expr) if expr else None
elif tag == 'All':
return _ast_const('True')
elif tag == 'Category':
category = node.text
return ast.Compare(left=ast.Str(category),
ops=[ast.In()],
comparators=[
ast.Attribute(value=ast.Name(
id='menuentry', ctx=ast.Load()),
attr='Categories',
ctx=ast.Load())
])
elif tag == 'Filename':
filename = node.text
return ast.Compare(left=ast.Str(filename),
ops=[ast.Eq()],
comparators=[
ast.Attribute(value=ast.Name(
id='menuentry', ctx=ast.Load()),
attr='DesktopFileID',
ctx=ast.Load())
])
def __parseRuleNode(node):
tag = node.tagName
if tag == 'Or':
return __parseBoolOp(node, ast.Or())
elif tag == 'And':
return __parseBoolOp(node, ast.And())
elif tag == 'Not':
expr = __parseBoolOp(node, ast.Or())
return ast.UnaryOp(ast.Not(), expr) if expr else None
elif tag == 'All':
return ast.Name('True', ast.Load())
elif tag == 'Category':
category = _get_node_text(node)
return ast.Compare(left=ast.Str(category),
ops=[ast.In()],
comparators=[
ast.Attribute(value=ast.Name(id='menuentry',
ctx=ast.Load()),
attr='Categories',
ctx=ast.Load())
])
elif tag == 'Filename':
filename = _get_node_text(node)
return ast.Compare(left=ast.Str(filename),
ops=[ast.Eq()],
comparators=[
ast.Attribute(value=ast.Name(id='menuentry',
ctx=ast.Load()),
attr='DesktopFileID',
ctx=ast.Load())
])
def visit_If(self, node):
if node.orelse and not self.is_body_covered(node.orelse):
# Remove the `else` part of the `if` if it's not covered
node.orelse = []
elif not self.is_body_covered(node.body):
# The main part of the `if` is not covered
if node.orelse and len(node.orelse) == 1 and \
isinstance(node.orelse[0], ast.If):
# This is probably an elif clause
node.orelse[0] = self.visit_If(node.orelse[0])
# This hack fixes bad indentation of the `else` part
orelse_pasta = node.orelse[0].__pasta__
if orelse_pasta.get(
'is_elif') and 'elseprefix' in orelse_pasta:
node.__pasta__['elseprefix'] = orelse_pasta['elseprefix']
new_test = ast.BoolOp(op=ast.Or(),
values=[node.test, node.orelse[0].test])
node.test = new_test
node.body = node.orelse[0].body
node.orelse = node.orelse[0].orelse
elif node.orelse:
# Only the `else` part is covered. Move the `else` part to the
# main part removing the previous uncovered content. Make sure
# the `test` stills being executed to maintain the software
# behavior, even when the `test` has side effects.
# Because the main part of the `if` is uncovered, we can assume
# that the `test` always evaluates to False.
new_test = ast.BoolOp(op=ast.Or(),
values=[node.test,
ast.Name(id='True')])
node.test = new_test
node.body = node.orelse
node.orelse = []
else:
# The `if` doesn't have an `else` block
# This would be better, but causes indentation errors in some
# conditions.
# return [ast.Expr(node.test)]
new_test = ast.BoolOp(op=ast.Or(),
values=[node.test,
ast.Name(id='True')])
node.test = new_test
node.body = [ast.copy_location(ast.Pass(), node.body[0])]
node.orelse = []
super(IfRemover, self).generic_visit(node)
return node
def ast(self):
"""Python AST of this predicate (construct transitively for all indirect children as well).
:return: AST of describing all children predicates
"""
return ast.BoolOp(ast.Or(),
[ast.Expr(value=x.ast()) for x in self._children])
def visit_BoolOp(self, node):
if isinstance(node.op, ast.And):
self.counter += 1
if self.counter == self.nodeToMutate:
new_node = ast.BoolOp()
new_node.values = node.values
new_node.op = ast.Or()
print('changing and {} to or.'.format(self.counter))
return ast.copy_location(new_node, node) # helps debugging
if isinstance(node.op, ast.Or):
self.counter += 1
if self.counter == self.nodeToMutate:
new_node = ast.BoolOp()
new_node.values = node.values
new_node.op = ast.And()
print('changing or {} to and.'.format(self.counter))
return ast.copy_location(new_node, node) # helps debugging
return self.generic_visit(node)
class Infix(Symbol):
rightAssoc = False
_logical_map = {"and": ast.And(), "or": ast.Or()}
def led(self, left):
self.first = left
rbp = self.lbp - int(self.rightAssoc)
self.second = self.parser.expression(rbp)
return self
def __repr__(self):
return "<'%s'>(%s, %s)" % (self.value, self.first, self.second)
def ast(self, context=None):
lhs = self.first.ast(context)
if self.second:
rhs = self.second.ast(context)
if self.value in self._logical_map:
return ast.BoolOp(op=self._logical_map[self.value], values=[lhs, rhs])
else:
path = list(context.stack)
path.append(self.first.value)
return ast.Call(
func=ast.Name(id="filter_field", ctx=ast.Load()),
args=[
ast.Name(id="obj", ctx=ast.Load()),
ast.List(elts=[ast.Str(s=i) for i in path], ctx=ast.Load()),
ast.Str(s=self.value),
rhs,
],
keywords=[],
)
return ast.Name(id="not", ctx=ast.Load())
def create_expression_node(self, expression):
if len(expression.logical_terms) == 1:
return self.to_node(expression.logical_terms[0])
logical_terms_nodes = []
for t in expression.logical_terms:
logical_terms_nodes.append(self.to_node(t))
return ast.BoolOp(ast.Or(), logical_terms_nodes)
def visit_BoolOper(self, node: BoolOper, *args, **kwargs) -> C.boolop:
if node == BoolOper.And:
return C.And()
elif node == BoolOper.Or:
return C.Or()
else:
raise Exception(f'unknown BoolOper {node!r}')
def translateStmtCase(n):
global i
name = '_CaseExp_' + str(i)
i += 1
e = ast.Assign([ast.NameConstant(name)], translateExpr(n.children[0]))
cases = n.children[1]
ifs = [e]
for case in cases:
assert case.type == 's-case-match'
matches = case.children[0]
caseStmt = case.children[1]
q = ast.BoolOp(ast.Or(), [
ast.Compare(ast.NameConstant(name), [ast.Eq()], [translateExpr(m)])
for m in matches
])
ee = ast.If(q, translateStmtOrBlock(caseStmt), [])
if len(ifs) > 1:
z = ifs[1].orelse
while len(z) > 0:
z = z[0].orelse
z.append(ee)
else:
ifs.append(ee)
if n.children[2]:
z = ifs[1].orelse
while len(z) > 0:
z = z[0].orelse
z += translateStmtOrBlock(n.children[2])
return ifs
def single_compare(self, node):
rhs = node.comparators[0]
if is_obj(node.left.type):
node = self.single_compare_objects(node)
elif node.left.type.is_pointer and rhs.type.is_pointer:
# Coerce pointers to integer values before comparing
node.left = nodes.CoercionNode(node.left, Py_uintptr_t)
node.comparators = [nodes.CoercionNode(rhs, Py_uintptr_t)]
elif node.left.type.is_complex and rhs.type.is_complex:
real1, imag1 = extract(node.left)
real2, imag2 = extract(rhs)
op = type(node.ops[0])
if op == ast.Eq:
lhs = compare(real1, ast.Eq(), real2)
rhs = compare(imag1, ast.Eq(), imag2)
result = ast.BoolOp(ast.And(), [lhs, rhs])
elif op == ast.NotEq:
lhs = compare(real1, ast.NotEq(), real2)
rhs = compare(imag1, ast.NotEq(), imag2)
result = ast.BoolOp(ast.Or(), [lhs, rhs])
else:
raise NotImplementedError("ordered comparisons are not "
"implemented for complex numbers")
node = nodes.typednode(result, bool_)
return node
def preprocess_boolean(expr, inv):
if type(expr) is ast.BoolOp:
if type(expr.op) is ast.And or type(expr.op) is ast.Or:
new_vs = []
pos_child = None
for v in expr.values:
nv, is_inv = preprocess_boolean(v, inv)
new_vs.append(nv)
pos_child = pos_child if is_inv else nv
pos_child = pos_child or new_vs[0]
if (type(expr.op) is ast.And and inv) or (type(expr.op) is ast.Or
and not inv):
return ast.BoolOp(ast.Or(), new_vs), False
new_vs.remove(pos_child)
new_vs2 = []
for v in new_vs:
nv, _ = preprocess_boolean(v, True)
new_vs2.append(nv)
expr = ast.BoolOp(ast.And(), new_vs2)
expr.pos_child = pos_child
return expr, False
else:
raise Babeception(
str(type(expr.op)) + ' is not supported in boolean!')
elif type(expr) is ast.UnaryOp:
if type(expr.op) is ast.Not:
return preprocess_boolean(expr.operand,
False) if inv else preprocess_boolean(
expr.operand, True)
else:
raise Babeception(
str(type(expr.op)) + ' is not supported in boolean!')
elif type(expr) is ast.Compare:
if type(expr.ops[0]) is ast.NotEq or type(
expr.ops[0]) is ast.Lt or type(expr.ops[0]) is ast.Gt:
return preprocess_child(expr, inv)
elif type(expr.ops[0]) is ast.Eq:
return preprocess_boolean(
ast.UnaryOp(
ast.Not(),
ast.Compare(expr.left, [ast.NotEq()], expr.comparators)),
inv)
elif type(expr.ops[0]) is ast.LtE:
return preprocess_boolean(
ast.UnaryOp(
ast.Not(),
ast.Compare(expr.left, [ast.Gt()], expr.comparators)), inv)
elif type(expr.ops[0]) is ast.GtE:
return preprocess_boolean(
ast.UnaryOp(
ast.Not(),
ast.Compare(expr.left, [ast.Lt()], expr.comparators)), inv)
else:
raise Babeception(
str(type(expr.ops[0])) + ' is not supported in boolean!')
elif type(expr) is ast.Call or type(expr) is ast.Name:
return preprocess_child(expr, inv)
else:
raise Babeception(str(type(expr)) + ' is not supported in boolean!')
def operator_equals(mod): op = ast.Add() if mod == '|=': op = ast.Or() if mod == '||=': op = ast.Or() if mod == '&=': op = ast.And() if mod == '&&=': op = ast.And() if mod == '+=': op = ast.Add() if mod == '-=': op = ast.Sub() if mod == '*=': op = ast.Mult() if mod == '**=': op = ast.Pow() if mod == '/=': op = ast.Div() if mod == '//=': op = ast.FloorDiv() if mod == '%=': op = ast.Mod() if mod == '^=': op = ast.BitXor() if mod == '<<': op = ast.LShift() if mod == '>>': op = ast.RShift() return op
def BoolOp(draw, expression) -> ast.BoolOp:
op = draw(sampled_from([
ast.And(),
ast.Or(),
]))
le = draw(lists(expression, min_size=2, max_size=3))
return ast.BoolOp(op, values=le)
def to_node(self):
if len(self.right) == 0:
return self.left.to_node()
else:
nodes = [self.left.to_node()]
for node in self.right:
nodes.append(node.to_node())
return ast.BoolOp(op=ast.Or(), values=nodes)
def boolean_operations(p): token_type, left, right = p[1].gettokentype(), p[0], p[2] if token_type == "and": return ast.And(left, right) elif token_type == "or": return ast.Or(left, right) else: assert False, "Something went wrong"
def __or__(self, other) -> Column:
''' Bitwise and becomes a logical and. '''
from .utils import _term_to_ast
return Column(
type(bool),
ast.BoolOp(
op=ast.Or(),
values=[_term_to_ast(self, self),
_term_to_ast(other, self)]))
def visit_Name(self, name):
# Display the repr of the name if it's a local variable or
# _should_repr_global_name() thinks it's acceptable.
locs = ast_Call(self.builtin("locals"), [], [])
inlocs = ast.Compare(ast.Str(name.id), [ast.In()], [locs])
dorepr = self.helper("should_repr_global_name", name)
test = ast.BoolOp(ast.Or(), [inlocs, dorepr])
expr = ast.IfExp(test, self.display(name), ast.Str(name.id))
return name, self.explanation_param(expr)
def or_(self) -> ast.expr:
left = self.and_()
if self.match_(TokenType.PIPE_PIPE):
values = [left, self.and_()]
while self.match_(TokenType.PIPE_PIPE):
values.append(self.and_())
return ast.BoolOp(ast.Or(), values,
**self.get_loc(left, values[-1]))
return left
def test_UnaryOp(self):
self.verify(ast.UnaryOp(ast.Invert(), ast.Num(42)), '~42')
self.verify(ast.UnaryOp(ast.Not(), ast.Num(42)), 'not 42')
self.verify(ast.UnaryOp(ast.UAdd(), ast.Num(42)), '+42')
self.verify(ast.UnaryOp(ast.USub(), ast.Num(42)), '-42')
precedence = ast.UnaryOp(
ast.Not(), ast.BoolOp(ast.Or(),
[ast.Num(n=1), ast.Num(2)]))
self.verify(precedence, 'not (1 or 2)')
def visit_TryExcept(self, node):
if node.orelse:
raise NotImplementedError('Try-except else handler not implemented')
self.indent()
self.output('try')
self.block(node.body, context=BlockContext(self.stack[-1]))
self.output(' catch($e) ')
self.push(BlockContext(self.stack[-1]))
if_start = None
if_end = None
for handler in node.handlers:
if handler.type is not None:
if handler.name is not None:
body = handler.body[:]
body.insert(0, ast.Assign(
[handler.name],
ast_call(ast_load('JS'), ast.Str('$e'))
))
else:
body = handler.body
types = [handler.type] if isinstance(handler.type, _ast.Name) else handler.type
conditions = [
ast_call(
ast_load('isinstance'),
ast_call(ast_load('JS'), ast.Str('$e')),
type_,
)
for type_ in types
]
_if = ast.If(
ast.BoolOp(ast.Or(), conditions),
body,
[]
)
if if_start is None:
if_start = if_end = _if
else:
if_end.orelse, if_end = [_if], _if
else:
if handler is not node.handlers[-1]:
raise SyntaxError("default 'except:' must be last")
if if_start is None:
self.block(handler.body)
else:
if_end.orelse = handler.body
if if_start is not None:
self.visit(if_start)
self.pop()
self.output('\n')
def missingCheck(check: ast.Compare, el: ast.Subscript,
default: bool) -> ast.BoolOp:
"""Creates AST nodes corresponding to check whether the `el` is None, if it is returns `default`"""
return ast.BoolOp(op=(ast.Or() if default else ast.And()),
values=[
ast.Compare(
left=el,
ops=[(ast.Is() if default else ast.IsNot())],
comparators=[noneCnst]), check
])
def __parseRule(node):
type = Rule.TYPE_INCLUDE if node.tagName == 'Include' else Rule.TYPE_EXCLUDE
tree = ast.Expression(lineno=1, col_offset=0)
expr = __parseBoolOp(node, ast.Or())
if expr:
tree.body = expr
else:
tree.body = ast.Name('False', ast.Load())
ast.fix_missing_locations(tree)
return Rule(type, tree)
def parse_rule(self, node):
type = Rule.TYPE_INCLUDE if node.tag == 'Include' else Rule.TYPE_EXCLUDE
tree = ast.Expression(lineno=1, col_offset=0)
expr = self.parse_bool_op(node, ast.Or())
if expr:
tree.body = expr
else:
tree.body = _ast_const('False')
ast.fix_missing_locations(tree)
return Rule(type, tree)
def visit_Compare(self, node):
# cmpop = Eq | NotEq | Lt | LtE | Gt | GtE | Is | IsNot | In | NotIn
print(" in MyTransformer.visit_Compare()")
print(" node =", node)
print(" op =", node.ops[0])
curr_op = node.ops[0]
comp_negate = curr_op
rand_num = random.randint(1, 10)
if rand_num >= 7:
print(" negating...")
if isinstance(curr_op, ast.Eq): comp_negate = ast.NotEq()
elif isinstance(curr_op, ast.NotEq): comp_negate = ast.Eq()
elif isinstance(curr_op, ast.Lt): comp_negate = ast.GtE()
elif isinstance(curr_op, ast.LtE): comp_negate = ast.Gt()
elif isinstance(curr_op, ast.Gt): comp_negate = ast.LtE()
elif isinstance(curr_op, ast.GtE): comp_negate = ast.Lt()
elif isinstance(curr_op, ast.Is): comp_negate = ast.IsNot()
elif isinstance(curr_op, ast.IsNot): comp_negate = ast.Is()
elif isinstance(curr_op, ast.In): comp_negate = ast.NotIn()
elif isinstance(curr_op, ast.NotIn): comp_negate = ast.In()
else: comp_negate = ast.Eq()
else:
print(" mixing up...")
if isinstance(curr_op, ast.Lt): comp_negate = ast.LtE()
elif isinstance(curr_op, ast.LtE): comp_negate = ast.And()
elif isinstance(curr_op, ast.Gt): comp_negate = ast.Or()
elif isinstance(curr_op, ast.GtE): comp_negate = ast.Gt()
elif isinstance(curr_op, ast.Is): comp_negate = ast.Gt()
elif isinstance(curr_op, ast.IsNot): comp_negate = ast.Lt()
elif isinstance(curr_op, ast.In):
comp_negate = ast.In(
) #leave the same for for loops (for x in this)
elif isinstance(curr_op, ast.NotIn):
comp_negate = ast.Lt()
else:
comp_negate = ast.Eq()
print(" new comparator =", comp_negate)
# create negated node | Compare(expr left, cmpop* ops, expr* comparators)
new_node = node
new_node.ops = [comp_negate]
ast.copy_location(new_node, node)
ast.fix_missing_locations(new_node)
return new_node
def _dnf(self, node):
if type(node) != ast.BoolOp:
return node
values = [self._dnf(child) for child in node.values]
if type(node.op) == ast.Or:
return ast.BoolOp(op=ast.Or(), values=values)
for index, value in enumerate(values):
if (type(value) == ast.BoolOp) and (type(value.op) == ast.Or):
maxterm = values[index]
values = values[:index] + values[index + 1:]
values = [
ast.BoolOp(op=ast.And(), values=[v] + values)
for v in maxterm.values
]
return self._dnf(ast.BoolOp(op=ast.Or(), values=values))
return node
def stop_iteration(node):
cmp_break = ast.Compare(left=mk_name(self.flag_id),
ops=[ast.Eq()],
comparators=[mk_str(self.BREAK)])
cmp_return = ast.Compare(left=mk_name(self.flag_id),
ops=[ast.Eq()],
comparators=[mk_str(self.RETURN)])
test = ast.BoolOp(op=ast.Or(), values=[cmp_break, cmp_return])
break_stmt = ast.Break()
ifstmt = ast.If(test=test, body=[break_stmt], orelse=[])
node.body.append(ifstmt)
def __or__(self, other) -> Column:
''' Bitwise and becomes a logical and. '''
self._test_for_extension('operator or')
from .utils import _term_to_ast
return Column(
type(bool),
ast.BoolOp(op=ast.Or(),
values=[
ast.Name('p', ctx=ast.Load()),
_term_to_ast(other, self)
]))
def visit_BoolOp(self, node):
if self.randomize():
if self.randomize():
op = ast.And()
else:
op = ast.Or()
values = []
for value in node.values:
values.append(self.visit(value))
return ast.copy_location(_ast.BoolOp(op=op, values=values), node)
else:
return node
def test_BoolOp(self):
and_op = ast.BoolOp(ast.And(), [ast.Num(2), ast.Num(3)])
self.verify(and_op, '2 and 3')
or_op = ast.BoolOp(ast.Or(), [ast.Num(2), ast.Num(3)])
self.verify(or_op, '2 or 3')
many_args = ast.BoolOp(ast.And(), [ast.Num(1), ast.Num(2), ast.Num(3)])
self.verify(many_args, '1 and 2 and 3')
no_precedence = ast.BoolOp(
ast.Or(),
[ast.BoolOp(ast.And(), [ast.Num(2), ast.Num(3)]),
ast.Num(1)])
self.verify(no_precedence, '2 and 3 or 1')
no_precedence2 = ast.BoolOp(
ast.Or(),
[ast.Num(2),
ast.BoolOp(ast.And(), [ast.Num(3), ast.Num(1)])])
self.verify(no_precedence2, '2 or 3 and 1')
precedence = ast.BoolOp(
ast.And(),
[ast.Num(1),
ast.BoolOp(ast.Or(), [ast.Num(2), ast.Num(3)])])
self.verify(precedence, '1 and (2 or 3)')