def test_conditional(self):
scope = model.Scope()
scope["a"] = model.Number(10)
cond = model.Conditional(
model.BinaryOperation(model.Number(4), ">", model.Number(3)), [
model.Assign(
"x",
model.BinaryOperation(model.Number(3), "-",
model.Number(5))),
model.Assign(
"y",
model.BinaryOperation(model.Number(5), "*",
model.Number(5)))
], [
model.Assign(
"x",
model.BinaryOperation(model.Reference("a"), "*",
model.Number(0)))
])
folder = ConstantFolder()
tree = folder.visit(cond)
assert (isinstance(tree, model.Conditional)
and tree.condition.value > 0
and isinstance(tree.if_true[0], model.Assign)
and tree.if_true[0].value.value == -2
and isinstance(tree.if_true[1], model.Assign)
and tree.if_true[1].value.value == 25
and len(tree.if_true) == 2 and len(tree.if_false) == 1
and isinstance(tree.if_false[0], model.Assign)
and tree.if_false[0].value.value == 0)
def parse_if(self):
self.ensure_token('if')
self.ensure_token('(')
condition = self.parse_expression()
self.ensure_token(')')
if_body = self.parse_block()
else_body = None
if self.peek_token().value == 'else':
self.drop_tokens()
else_body = self.parse_block()
return model.Conditional(condition, if_body, else_body)
def mytest():
printer = PrettyPrinter()
cond2 = model.Conditional(model.Number(30), [model.Number(10)],
[model.Number(20)])
cond = model.Conditional(
model.Number(42),
[model.Number(1), cond2, model.Number(3)],
[model.Number(4), model.Number(5)])
cond3 = model.Conditional(model.Number(228), [], [])
func2 = model.Function(('p111', 'p222'), [
model.Reference("x"),
model.Print(model.Reference("p111")),
model.Read("myVar")
])
fd2 = model.FunctionDefinition("anotherPrettyFunc", func2)
func = model.Function(
(),
[model.UnaryOperation("-", model.Number(100000000)), fd2, cond, cond3])
fd = model.FunctionDefinition("myPrettyFunc", func)
printer.visit(fd)
asd = model.BinaryOperation(
model.BinaryOperation(model.Number(123), "+", model.Reference("xx")),
"*",
model.UnaryOperation(
"-",
model.BinaryOperation(model.Reference("xx"), "+",
model.Reference("yy"))))
printer.visit(asd)
asd2 = model.BinaryOperation(
model.BinaryOperation(model.Number(123), "/", model.Reference("xx")),
"/",
model.BinaryOperation(
model.BinaryOperation(model.Reference("xx"), "/",
model.Reference("yy")), "/",
model.BinaryOperation(model.Number(123), "/",
model.Reference("yy"))))
printer.visit(asd2)
printer.visit(model.FunctionCall(model.Reference("func"), [asd, asd2]))
cond4 = model.Conditional(model.Number(228), [])
printer.visit(cond4)
def test_mixed_conditional(self):
scope = model.Scope()
scope["a"] = model.Number(-10)
scope["b"] = model.Number(5)
scope["c"] = model.Number(10)
""" if not (a == c) and b < c:
print(a) """
conditional = model.Conditional(
model.BinaryOperation(
model.UnaryOperation(
"!",
model.BinaryOperation(model.Reference("a"), "==",
model.Reference("c"))), "&&",
model.BinaryOperation(model.Reference("b"), "<",
model.Number(42))),
[model.Assign("res", model.Reference("a"))])
printer = PrettyPrinter()
result = printer.visit(conditional)
assert (result == "if ((!((a) == (c))) && ((b) < (42))) {\n\tres =" +
" a;\n};\n")
def test():
folder = ConstantFolder()
prr = printer.PrettyPrinter()
oper = model.BinaryOperation(
model.BinaryOperation(
model.BinaryOperation(
model.BinaryOperation(model.Number(2), "+", model.Number(3)),
"/",
model.BinaryOperation(model.Number(
2), "+", model.Reference("x"))
),
"/",
model.BinaryOperation(
model.BinaryOperation(model.Reference(
"x"), "-", model.Reference("x")),
"/",
model.BinaryOperation(model.Reference(
"x"), "-", model.Reference("y"))
)
),
"/",
model.BinaryOperation(
model.BinaryOperation(
model.BinaryOperation(model.Number(
0), "*", model.Reference("x")),
"/",
model.UnaryOperation("!", model.Reference("x"))
),
"/",
model.UnaryOperation("-", model.Number(30))
),
)
opr = model.Conditional(model.UnaryOperation("!", model.Number(2)), [model.Print(model.Number(2))])
prr.visit(oper)
prr.visit(opr)
noper = folder.visit(oper)
nopr = folder.visit(opr)
prr.visit(noper)
prr.visit(nopr)
def main():
v = PrettyPrinter()
v.visit(m.Print(m.Number(10)))
v.visit(m.UnaryOperation('-', m.Number(10)))
v.visit(
m.BinaryOperation(
m.BinaryOperation(m.Reference('foo'), '+', m.Number(7)), '*',
m.Number(2)))
v.visit(m.Read("read"))
v.visit(
m.Conditional(
m.Number(5),
[m.BinaryOperation(m.Reference('var'), '-', m.Number(-5))]))
v.visit(
m.FunctionDefinition(
'summer',
m.Function(['a', 'b'], [
m.Print(
m.BinaryOperation(m.Reference('a'), '+',
m.Reference('b'))),
m.BinaryOperation(m.Reference('a'), '+', m.Reference('b'))
])))
v.visit(
m.FunctionCall(
m.Reference('summer'),
[m.Number(1),
m.BinaryOperation(m.Number(2), '+', m.Number(3))]))
v.visit(
m.Print(
m.Conditional(m.BinaryOperation(m.Number(4), '-', m.Number(4)), [],
[
m.BinaryOperation(m.Number(9), '/', m.Number(3)),
m.Reference('var')
])))
v.visit(
m.FunctionDefinition(
'abs',
m.Function(['a', 'b'], [
m.Conditional(
m.BinaryOperation(
m.BinaryOperation(m.Reference('a'), '-',
m.Reference('b')), '>', m.Number(0)),
[
m.Print(
m.BinaryOperation(m.Reference('a'), '-',
m.Reference('b')))
], [
m.Print(
m.BinaryOperation(m.Reference('b'), '-',
m.Reference('a')))
])
])))
v.visit(
m.FunctionCall(
m.Reference('abs'),
[m.Number(23), m.UnaryOperation('-', m.Number(-30))]))
v.visit(m.FunctionDefinition('fu', m.Function([], [])))
v.visit(m.FunctionCall(m.Reference('fu'), []))
v.visit(m.Print(m.BinaryOperation(m.Number(5), '&&', m.Number(6))))
v.visit(m.Print(m.BinaryOperation(m.Number(3), '<', m.Number(5))))
v.visit(m.Print(m.Conditional(m.Number(3), None, None)))
v.visit(m.Print(m.BinaryOperation(m.Number(1), '||', m.Number(4))))
def test_empty_conditional(self):
number = model.Number(42)
conditional = model.Conditional(number, [], [])
printer = PrettyPrinter()
result = printer.visit(conditional)
assert result == "if (42) {\n};\n"
def visit_conditional(self, conditional):
return m.Conditional(conditional.condition.accept(self),
self.optimize_list(conditional.if_true),
self.optimize_list(conditional.if_false))
def test_conditional():
scope = model.Scope()
true = model.Number(1)
false = model.Number(0)
f = model.FunctionCall(model.Function([], [true]), [])
cond = model.Conditional(true, None, None)
cond.evaluate(scope)
cond = model.Conditional(false, None, None)
cond.evaluate(scope)
cond = model.Conditional(true, [], None)
cond.evaluate(scope)
cond = model.Conditional(true, None, [])
cond.evaluate(scope)
cond = model.Conditional(false, [], None)
cond.evaluate(scope)
cond = model.Conditional(false, None, [])
cond.evaluate(scope)
cond = model.Conditional(true, [], [])
cond.evaluate(scope)
cond = model.Conditional(true, [], [])
cond.evaluate(scope)
cond = model.Conditional(true, [true], None)
assert cond.evaluate(scope) is true
cond = model.Conditional(false, None, [false])
assert cond.evaluate(scope) is false
cond = model.Conditional(true, [f], None)
assert cond.evaluate(scope) is true
cond = model.Conditional(false, None, [f])
assert cond.evaluate(scope) is true
# If one of the following assertions fail, it means that Conditional has
# evaluated wrong branch.
cond = model.Conditional(false, [true], None)
assert cond.evaluate(scope) is not true
cond = model.Conditional(false, [true], [])
assert cond.evaluate(scope) is not true
cond = model.Conditional(true, None, [false])
assert cond.evaluate(scope) is not false
cond = model.Conditional(true, [], [false])
assert cond.evaluate(scope) is not false
def visitConditional(self, extra):
return model.Conditional(
extra.condition.visit(self), self.listev(extra.if_true),
self.listev(extra.if_false)
if extra.if_false is not None else None)
def visit_conditional(self, cond):
condition = cond.condition.visit(self)
if_true = self.process_list(cond.if_true or [])
if_false = self.process_list(cond.if_false or [])
return model.Conditional(condition, if_true, if_false)