christoph/lecture-interpreters
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implement parenthesis for expressions

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Christoph
2021-08-11 21:17:36 +02:00
parent 3a6814a850
commit 8acc26f8f3
2 changed files with 16 additions and 1 deletions
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10
mytest/test_sugar.py
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@ -7,6 +7,7 @@ from interpreter import Interpreter
def sugar_test_helper(expr):
ast = parse("x = " + expr)
print(ast)
interpreter = Interpreter()
w_module = interpreter.make_module()
interpreter.eval(ast, w_module)
@ -40,6 +41,8 @@ def test_mod():
def test_inc():
assert sugar_test_helper("1 ++") == 2
assert sugar_test_helper("1 ++ + 1") == 3 # Is this allowed?
assert sugar_test_helper("2 * 2 ++") == 6
def test_mixed_precedence():
@ -47,3 +50,10 @@ def test_mixed_precedence():
assert sugar_test_helper("1 + 2 + 3 - 5") == 1
assert sugar_test_helper("10 - 2 * 5") == 0
assert sugar_test_helper("1 + 2 * 2 * 3 - 3 * 4") == 1
def test_parenthesis():
assert sugar_test_helper("2 * (2 + 3)") == 10
assert sugar_test_helper("(2 + 5)") == 7
assert sugar_test_helper("(3 + 3) % 2") == 0
assert sugar_test_helper("(2 * 2) ++") == 5