def derive_mult(expression, respect_to):
# U dv + V du
return construct_binary_ast_node(
label("+"),
construct_binary_ast_node(label("*"), expression[1], derivative.derive(expression[2], respect_to)),
construct_binary_ast_node(label("*"), derivative.derive(expression[1], respect_to), expression[2]),
)
def derive_mult(expression, respect_to):
# U dv + V du
return construct_binary_ast_node(
label('+'),
construct_binary_ast_node(label('*'), expression[1],
derivative.derive(expression[2],
respect_to)),
construct_binary_ast_node(label('*'),
derivative.derive(expression[1], respect_to),
expression[2]))
def derive_div(expression, respect_to):
return construct_binary_ast_node(
label("/"),
construct_binary_ast_node(
label("-"),
construct_binary_ast_node(label("*"), derivative.derive(expression[1], respect_to), expression[2]),
construct_binary_ast_node(label("*"), expression[1], derivative.derive(expression[2], respect_to)),
),
construct_binary_ast_node(label("*"), expression[2], expression[2]),
)
def derive_pow(expression, respect_to):
# TODO CURRENTLY ASSUMES A CONSTANT IN THE EXPONENT, FIX THIS
# TODO WOW THIS METHOD IS BAD, FIX THIS
return construct_binary_ast_node(
label('*'), expression[2],
construct_binary_ast_node(
label('*'),
construct_binary_ast_node(
label('^'), expression[1],
(str(float(expression[2][0]) - 1), 'CONSTANT')),
derivative.derive(expression[1], respect_to)))
def derive_div(expression, respect_to):
return construct_binary_ast_node(
label('/'),
construct_binary_ast_node(
label('-'),
construct_binary_ast_node(
label('*'), derivative.derive(expression[1], respect_to),
expression[2]),
construct_binary_ast_node(
label('*'), expression[1],
derivative.derive(expression[2], respect_to)),
), construct_binary_ast_node(label('*'), expression[2], expression[2]))
def derive_pow(expression, respect_to):
# TODO CURRENTLY ASSUMES A CONSTANT IN THE EXPONENT, FIX THIS
# TODO WOW THIS METHOD IS BAD, FIX THIS
return construct_binary_ast_node(
label("*"),
expression[2],
construct_binary_ast_node(
label("*"),
construct_binary_ast_node(label("^"), expression[1], (str(float(expression[2][0]) - 1), "CONSTANT")),
derivative.derive(expression[1], respect_to),
),
)
def derive(expression, respect_to):
# TODO Fix access for operator expressions
# EX * 5 x
token_type = get_token_type(expression[0])
token_value = get_token_value(expression[0])
if token_type in ['CONSTANT']:
return label('0')
if token_type in ['IDENTIFIER']:
# Check if in respect to identifier
if token_value == respect_to:
return label('1')
else:
return label('0')
if token_type in ['OPERATOR']:
# TODO implement this monster by implementing each operator individually
# raise Exception('TODO Not Implemented')
method = bin_operators_impl[token_value]
return method(expression, respect_to)
raise Exception('wat')
def derive(expression, respect_to):
# TODO Fix access for operator expressions
# EX * 5 x
token_type = get_token_type(expression[0])
token_value = get_token_value(expression[0])
if token_type in ['CONSTANT']:
return label('0')
if token_type in ['IDENTIFIER']:
# Check if in respect to identifier
if token_value == respect_to:
return label('1')
else:
return label('0')
if token_type in ['OPERATOR']:
# TODO implement this monster by implementing each operator individually
# raise Exception('TODO Not Implemented')
method = bin_operators_impl[token_value]
return method(expression, respect_to)
raise Exception('wat')
def test_label_bad(self):
expected = ('pear95', 'UNKNOWN')
result = label('pear95')
self.assertEqual(expected, result)
def test_label_operator_plus(self):
expected = ('+', 'OPERATOR')
result = label('+')
self.assertEqual(expected, result)
def test_label_ident2(self):
expected = ('apples', 'IDENTIFIER')
result = label('apples')
self.assertEqual(expected, result)
def test_label_num2(self):
expected = ('67', 'CONSTANT')
result = label('67')
self.assertEqual(expected, result)
def test_label_bad(self):
expected = ('pear95', 'UNKNOWN')
result = label('pear95')
self.assertEqual(expected, result)
def test_label_operator_plus(self):
expected = ('+', 'OPERATOR')
result = label('+')
self.assertEqual(expected, result)
def test_label_ident2(self):
expected = ('apples', 'IDENTIFIER')
result = label('apples')
self.assertEqual(expected, result)
def test_label_num2(self):
expected = ('67', 'CONSTANT')
result = label('67')
self.assertEqual(expected, result)
