def test_control_flow(self):
self.assertEvalTo(['begin', ['setq','yyyy',9], 2, 'yyyy'], 9)
self.eval(['dowhile',
['setq','yyyy',['+', 'yyyy', 1]],
['!=',['%','yyyy',7],0]
])
self.assertEvalTo('yyyy',14)
self.assertEvalTo(['if', ['==',3,3], 42], 42)
self.assertEvalTo(['if', ['==',3,4], 42], None)
self.assertEvalTo(['if', ['==',3,3], 42, 56], 42)
self.assertEvalTo(['if', ['==',3,4], 42, 56], 56)
self.assertEvalTo(['cond',
[['==', 1, 2], q("foo")],
[['==', 2, 2], q("bar")],
[True, q("baz")],
], "bar")
self.assertEvalTo(['cond',
[['==', 1, 2], q("foo")],
[['==', 2, 3], q("bar")],
[True, q("baz")],
], "baz")
self.assertEvalTo(['cond',
[False, q("foo")],
[False, q("bar")],
[False, q("baz")],
], None)
def test_high_order_functions(self):
self.eval(['setq', 'even',
['lambda', ['x'], ['==', ['%', 'x', 2], 0]]])
self.assertEvalTo(['filter',
['lambda', ['x'], ['==', ['%', 'x', 2], 0]],
q([1,2,3,4,5,6,7,8,9,10])], [2,4,6,8,10])
self.assertEvalTo(['filter',
'even',
q([1,2,3,4,5,6,7,8,9,10])], [2,4,6,8,10])
self.assertEvalTo(['filter',
lambda ctx,x: x%2==0,
q([1,2,3,4,5,6,7,8,9,10])], [2,4,6,8,10])
self.assertEvalTo(['map',
['lambda', ['x'], ['+', 'x', 1]],
q([1,2,3,4,5])], [2,3,4,5,6])
self.assertEvalTo(['map',
lambda ctx,x: x+1,
q([1,2,3,4,5])], [2,3,4,5,6])
self.assertEvalTo(['reduce',
['lambda', ['x','y'], ['+', 'x', 'y']],
q([1,2,3,4,5])], 15)
self.assertEvalTo(['reduce',
'+',
q([1,2,3,4,5])], 15)
self.assertEvalTo(['reduce',
lambda ctx,x,y: x+y,
q([1,2,3,4,5])], 15)
self.assertEvalTo(['partition', 'even', q([1,2,3,4,5,6,7,8,9])],
[[2,4,6,8],[1,3,5,7,9]])
def test_set(self):
self.eval(['set', q('blah'), 42])
self.assertEvalTo("blah", 42)
self.eval(['set', q('eight'), ["+", 3, 5]])
self.assertEvalTo("eight", 8)
def test_func(self):
self.assertEvalTo(['+', 3, ['-', 9, 7]], 3+(9-7))
self.assertEvalTo(['+', ["*", 1, 2], ["*",3,4]], 1*2+3*4)
self.assertEvalTo(['quote', "abc"], "abc")
self.assertEvalTo(q([1,2,3]), [1,2,3])
def test_list_processing(self):
self.assertEvalTo(['apply', '+', q([1,2])], 3)
self.assertEvalTo(['list', 1,2,q(3),4,5], [1,2,3,4,5])
self.assertEvalTo(['cons', q("abc"), q([1,2,3])], ["abc",1,2,3])
self.assertEvalTo(['first', q([1,2,3])], 1)
self.assertEvalTo(['rest', q([1,2,3])], [2,3])
self.assertEvalTo(['null', q([])], True)
self.assertEvalTo(['null', q([1])], False)
self.assertEvalTo(['append', q([1]), q([2,3,4]), q([5,6])], [1,2,3,4,5,6])
self.assertEvalTo(['concat', q([[1], [2,3,4], [5,6]])], [1,2,3,4,5,6])