Created
December 13, 2009 13:14
-
-
Save bebraw/255410 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
from placidity.interpreter import Interpreter | |
class TestInterpreter: | |
def setup_method(self, method): | |
interpreter = Interpreter() | |
self.interpret = interpreter.interpret | |
class TestAccessVariable: | |
def test_set_variable(self): | |
self.interpret('a=6') | |
assert self.interpret('a') == 6 | |
def test_unset_variable(self): | |
# Note that we could use some other convention as well. | |
# Zero will do for now | |
assert self.interpret('a') == 0 | |
TestAccessVariable.setup_method = setup_method | |
... # the math tests! |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
... | |
class TestUnsetVariable(TestInterpreter): | |
def test_unset_variable(self): | |
assert self.interpret('a') == 'null' | |
def test_variable_in_expression(self): | |
assert self.interpret('a+3') == 'null' | |
... |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class Interpreter: | |
def __init__(self): | |
self.vars = {} | |
def interpret(self, expression): | |
try: | |
return eval(expression, self.vars) | |
except NameError: | |
return 'null' | |
except SyntaxError: | |
l_value, r_value = expression.split('=') | |
try: | |
self.vars[l_value] = int(r_value) | |
except ValueError: | |
self.vars[l_value] = self.interpret(r_value) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class Interpreter: | |
def __init__(self): | |
self.vars = {} | |
def interpret(self, expression): | |
try: | |
return eval(expression, self.vars) | |
except SyntaxError: | |
l_value, r_value = expression.split('=') | |
self.vars[l_value] = int(r_value) | |
except NameError: | |
return 0 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
from placidity.interpreter import Interpreter | |
from placidity.utils import Operations | |
class TestInterpreter: | |
... # access variable tests and setup method | |
class TestMath: | |
operations = Operations(('1+1', 2), ('5-1', 4), ('3*5', 15), ('12/4', 3), ) | |
def test_operations(self): | |
for operation in self.operations: | |
assert self.interpret(operation.expression) == operation.result | |
TestMath.setup_method = setup_method |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class Operations(tuple): | |
def __new__(cls, *args): | |
class Operation: | |
def __init__(self, expression, result): | |
self.expression = expression | |
self.result = result | |
operations = [] | |
for arg in args: | |
operations.append(Operation(*arg)) | |
return tuple.__new__(cls, operations) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
from placidity.interpreter import Interpreter | |
from placidity.utils import Operations | |
class TestInterpreter: | |
def setup_method(self, method): | |
interpreter = Interpreter() | |
self.interpret = interpreter.interpret | |
class TestSetVariable(TestInterpreter): | |
def test_set(self): | |
self.interpret('a=6') | |
assert self.interpret('a') == 6 | |
def test_variable_in_expression(self): | |
self.interpret('a=12') | |
assert self.interpret('a+3') == 15 | |
class TestUnsetVariable(TestInterpreter): | |
def test_unset_variable(self): | |
# Note that we could use some other convention as well. | |
# Zero will do for now | |
assert self.interpret('a') == 0 | |
def test_variable_in_expression(self): | |
assert self.interpret('a+3') == 3 | |
class TestMath(TestInterpreter): | |
operations = Operations(('1+1', 2), ('5-1', 4), ('3*5', 15), ('12/4', 3), ) | |
def test_operations(self): | |
for operation in self.operations: | |
assert self.interpret(operation.expression) == operation.result |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class Variables(dict): | |
def __getitem__(self, key): | |
return super(Variables, self).__getitem__(key) if key in self else 0 | |
class Interpreter: | |
def __init__(self): | |
self.vars = Variables() | |
def interpret(self, expression): | |
try: | |
return eval(expression, self.vars) | |
except SyntaxError: | |
l_value, r_value = expression.split('=') | |
self.vars[l_value] = int(r_value) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
... | |
class TestSetVariable(TestInterpreter): | |
def test_set(self): | |
self.interpret('a=6') | |
assert self.interpret('a') == 6 | |
def test_set_expression(self): | |
self.interpret('a=4*3') | |
assert self.interpret('a') == 12 | |
def test_set_variable(self): | |
self.interpret('a=8') | |
self.interpret('b=a') | |
assert self.interpret('b') == 8 | |
def test_variable_in_expression(self): | |
self.interpret('a=12') | |
assert self.interpret('a+3') == 15 | |
... |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
... | |
class Interpreter: | |
def __init__(self): | |
self.vars = Variables() | |
def interpret(self, expression): | |
try: | |
return eval(expression, self.vars) | |
except SyntaxError: | |
l_value, r_value = expression.split('=') | |
try: | |
self.vars[l_value] = int(r_value) | |
except ValueError: | |
try: | |
self.vars[l_value] = eval(r_value, self.vars) | |
except SyntaxError: | |
self.vars[l_value] = self.vars[r_value] |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment