def __call__(self, *args, **kwargs):
""" Returns a new _LambdaExpression performing '<r>.__call__(*args, **kwargs)' on the result <r> of this expression's evaluation """
# return self.add_bound_method_to_stack('__call__', *args, **kwargs)
root_var, _ = _get_root_var(self, *args, **kwargs)
def ___call__(input):
# first evaluate the inner function
r = self.evaluate(input)
# then call the method
return r.__call__(
*[evaluate(other, input) for other in args], **{
arg_name: evaluate(other, input)
for arg_name, other in kwargs.items()
})
# return a new LambdaExpression of the same type than self, with the new function as inner function
# Note: we use precedence=None for coma-separated items inside the parenthesis
string_expr = get_repr(self, _PRECEDENCE_SUBSCRIPTION_SLICING_CALL_ATTRREF) \
+ '(' + ', '.join([get_repr(arg, None) for arg in args]) \
+ (', ' if (len(args) > 0 and len(kwargs) > 0) else '')\
+ ', '.join([arg_name + '=' + get_repr(arg, None) for arg_name, arg in kwargs.items()]) + ')'
return type(self)(
fun=___call__,
precedence_level=_PRECEDENCE_SUBSCRIPTION_SLICING_CALL_ATTRREF,
str_expr=string_expr,
root_var=root_var)
def __or__(self, other):
"""
A logical OR between this _LambdaExpression and something else. The other part can either be
* a scalar
* a callable
* a _LambdaExpression
A special operation can be performed by doing '| _'. This will 'close' the expression and return a callable
view of it
:param other:
:return:
"""
# Abandoned - operator | does not have precedence over comparison operators (<, >, ...)
# if other is _:
# # special character: close and return
# return self.as_function()
if not callable(other):
# then the other part has already been evaluated, since this operator is not a short-circuit like the 'or'
# keyword. This is probably an error from the developer ? Warn him/her
warn(
"One of the sides of an '|' operator is not a _LambdaExpression and therefore will always have the same"
" value, whatever the input. This is most probably a mistake in the expression."
)
if other:
# the other part is True, there will never be a need to evaluate.
return True
else:
# the other part is False, return a boolean expression of self (The Bool function is created later)
return getattr(this_module, 'Bool')(self)
else:
# check that both work on the same variable
root_var, _ = _get_root_var(self, other)
# create a new _LambdaExpression able to evaluate both sides with short-circuit capability
def evaluate_both_inner_functions_and_combine(input):
# first evaluate self
left = self.evaluate(input)
if left:
# short-circuit: the left part is True, no need to evaluate the right part
return True
else:
# evaluate the right part
return bool(evaluate(other, input))
string_expr = get_repr(self,
_PRECEDENCE_BITWISE_OR) + ' | ' + get_repr(
other, _PRECEDENCE_BITWISE_OR)
return _LambdaExpression(
fun=evaluate_both_inner_functions_and_combine,
precedence_level=_PRECEDENCE_BITWISE_OR,
str_expr=string_expr,
root_var=root_var)
def __rpow__(self, other):
""" Returns a new _LambdaExpression performing 'other ** <r>' on the result <r> of this expression's evaluation """
root_var, _ = _get_root_var(self, other)
def ___rpow__(input):
# first evaluate the inner function
r = self.evaluate(input)
# then call the method
return evaluate(other, input)**r
# return a new LambdaExpression of the same type than self, with the new function as inner function
string_expr = get_repr(other, _PRECEDENCE_EXPONENTIATION) + ' ** ' \
+ get_repr(self, _PRECEDENCE_POS_NEG_BITWISE_NOT)
return type(self)(fun=___rpow__,
precedence_level=13,
str_expr=string_expr,
root_var=root_var)
def __and__(self, other):
"""
A logical AND between this _LambdaExpression and something else. The other part can either be
* a scalar
* a callable
* a _LambdaExpression
:param other:
:return:
"""
if not callable(other):
# then the other part has already been evaluated, since this operator is not a short-circuit like the 'and'
# keyword. This is probably an error from the developer ? Warn him/her
warn(
"One of the sides of an '&' operator is not a _LambdaExpression and therefore will always have the "
"same value, whatever the input. This is most probably a mistake in the expression."
)
if not other:
# the other part is False, there will never be a need to evaluate.
return False
else:
# the other part is True, return a boolean expression of self. (The Bool function is created later)
return getattr(this_module, 'Bool')(self)
else:
# check that both work on the same variable
root_var, _ = _get_root_var(self, other)
# create a new _LambdaExpression able to evaluate both sides with short-circuit capability
def evaluate_both_inner_functions_and_combine(input):
# first evaluate self
left = self.evaluate(input)
if not left:
# short-circuit: the left part is False, no need to evaluate the right part
return False
else:
# evaluate the right part
return bool(evaluate(other, input))
string_expr = get_repr(self,
_PRECEDENCE_BITWISE_AND) + ' & ' + get_repr(
other, _PRECEDENCE_BITWISE_AND)
return _LambdaExpression(
fun=evaluate_both_inner_functions_and_combine,
precedence_level=_PRECEDENCE_BITWISE_AND,
str_expr=string_expr,
root_var=root_var)
def __xor__(self, other):
"""
A logical XOR between this _LambdaExpression and something else. The other part can either be
* a scalar
* a callable
* a _LambdaExpression
:param other:
:return:
"""
if not callable(other):
# then the other part has already been evaluated, since this operator is not a short-circuit like the 'or'
# keyword. This is probably an error from the developer ? Warn him/her
warn(
"One of the sides of an '^' operator is not a _LambdaExpression and therefore will always have the "
"same value, whatever the input. This is most probably a mistake in the expression."
)
if other:
# the other part is True, so this becomes a Not expression of self (The Not function is created later)
return self.not_()
else:
# the other part is False, return a boolean expression of self (The Bool function is created later)
return getattr(this_module, 'Bool')(self)
else:
# check that both work on the same variable
root_var, _ = _get_root_var(self, other)
# create a new _LambdaExpression able to evaluate both sides
def evaluate_both_inner_functions_and_combine(input):
# first evaluate self
left = self.evaluate(input)
# evaluate the right part
right = evaluate(other, input)
return (left and not right) or (not left and right)
string_expr = get_repr(self,
_PRECEDENCE_BITWISE_XOR) + ' ^ ' + get_repr(
other, _PRECEDENCE_BITWISE_XOR)
return _LambdaExpression(
fun=evaluate_both_inner_functions_and_combine,
precedence_level=_PRECEDENCE_BITWISE_XOR,
str_expr=string_expr,
root_var=root_var)
def __rdivmod__(self, other):
""" Returns a new _LambdaExpression performing '<r>.__rdivmod__(*args)' on the result <r> of this expression's evaluation """
# return self.add_bound_method_to_stack('__rdivmod__', *args)
root_var, _ = _get_root_var(self, other)
def ___rdivmod__(input):
# first evaluate the inner function
r = self.evaluate(input)
# then call the method
return divmod(evaluate(other, input), r)
# return a new LambdaExpression of the same type than self, with the new function as inner function
# Note: we use precedence=None for coma-separated items inside the parenthesis
string_expr = 'divmod(' + get_repr(other, None) + ', ' + get_repr(
self, None) + ')'
return type(self)(
fun=___rdivmod__,
precedence_level=_PRECEDENCE_SUBSCRIPTION_SLICING_CALL_ATTRREF,
str_expr=string_expr,
root_var=root_var)
def __getattr__(self, name):
""" Returns a new _LambdaExpression performing 'getattr(<r>, *args)' on the result <r> of this expression's evaluation """
root_var, _ = _get_root_var(self, name)
def ___getattr__(input):
# first evaluate the inner function
r = self.evaluate(input)
# then call the method
return getattr(r, evaluate(name, input))
# return a new LambdaExpression of the same type than self, with the new function as inner function
string_expr = get_repr(
self, _PRECEDENCE_SUBSCRIPTION_SLICING_CALL_ATTRREF) + '.' + name
return type(self)(
fun=___getattr__,
precedence_level=_PRECEDENCE_SUBSCRIPTION_SLICING_CALL_ATTRREF,
str_expr=string_expr,
root_var=root_var)
