def parse_unary(self):
token = self.peek_token()
if self.is_unary(token.value):
self.drop_tokens()
return model.UnaryOperation(token.value, self.parse_unary())
primary = self.parse_primary()
while self.peek_token().value == '(':
parameters = self.parse_parameters()
primary = model.FunctionCall(primary, parameters)
return primary
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():
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 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_function_with_body_args(self):
parent = model.Scope()
parent["f"] = model.Function(("a", "b"), [
model.Print(
model.BinaryOperation(model.Reference("a"), "+",
model.Reference("b")))
])
parent["x"] = model.Number(10)
scope = model.Scope(parent)
scope["y"] = model.Number(20)
definition = model.FunctionDefinition("f", parent["f"])
printer = PrettyPrinter()
result = printer.visit(definition)
assert result == "def f(a, b) {\n\tprint (a) + (b);\n};\n"
definition.evaluate(scope)
call = model.FunctionCall(
model.Reference("f"),
[model.Number(5),
model.UnaryOperation("-", model.Number(3))])
result = printer.visit(call)
assert result == "f(5, -(3));\n"
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_unary_operation(self):
number = model.Number(42)
unary = model.UnaryOperation("-", number)
printer = PrettyPrinter()
result = printer.visit(unary)
assert result == "-(42);\n"
def visit_unary_operation(self, unary_operation):
expr = unary_operation.expr.accept(self)
if type(expr) == m.Number:
return m.UnaryOperation(unary_operation.op,
expr).evaluate(self.scope)
return m.UnaryOperation(unary_operation.op, expr)
def test_unary_operation():
a = model.Number(10)
for op in ["-", "!"]:
model.UnaryOperation(op, a).evaluate(model.Scope())
def test_unary_operation(self):
op = model.UnaryOperation(
"-", model.BinaryOperation(model.Number(1), "+", model.Number(2)))
folder = ConstantFolder()
tree = folder.visit(op)
assert isinstance(tree, model.Number) and tree.value == -3
def visit_unary_operation(self, un_op):
ex = self.visit(un_op.expression)
if isinstance(ex, model.Number):
return model.Number(un_op.operations[un_op.op](ex.number))
return model.UnaryOperation(un_op.op, ex)