def test_puts_function(self):
self.assertEqual(
self.parse("""
int puts(const char * string) {
int i = 0;
while (string[i] != NULL) {
putc(string[i++]);
}
putc('\\n');
return i + 1;
}
"""),
Program([
Function(
return_type=Type(base='int'),
name="puts",
params=[
VariableDeclaration(name="string",
vtype=Type(
base="pointer",
const=True,
reference=Type(base="char")))
],
body=Block([
VariableDeclaration(name="i",
vtype=Type(base="int"),
value=Int32(value=0)),
For(condition=BinaryOperation(
operator="!=",
left=ArrayDereference(
array=Variable(name="string"),
index=Variable(name="i")),
right=Null()),
body=Block([
Call(name="putc",
args=[
ArrayDereference(
array=Variable("string"),
index=PostOperation(
operator="++",
variable=Variable(name="i")))
])
])),
Call(name="putc", args=[Char('\n')]),
ReturnStatement(
value=BinaryOperation(operator="+",
left=Variable(name="i"),
right=Int32(value=1)))
]))
]))
def test_basic_or(self):
self.assertEqual(
self.parse(self.function_wrap('1 || 0;')),
self.function_wrap_node(
BinaryOperation(operator="||",
left=Int32(value=1),
right=Int32(value=0))))
def test_basic_lte(self):
self.assertEqual(
self.parse(self.function_wrap('2 <= 3;')),
self.function_wrap_node(
BinaryOperation(operator="<=",
left=Int32(value=2),
right=Int32(value=3))))
def test_modulus(self):
self.assertEqual(
self.parse(self.function_wrap("1 % 2;")),
self.function_wrap_node(
BinaryOperation(operator="%",
left=Int32(value=1),
right=Int32(value=2))))
def test_division(self):
self.assertEqual(
self.parse(self.function_wrap("1 / 2;")),
self.function_wrap_node(
BinaryOperation(operator="/",
left=Int32(value=1),
right=Int32(value=2))))
def test_multiplication(self):
self.assertEqual(
self.parse(self.function_wrap("1 * 2;")),
self.function_wrap_node(
BinaryOperation(operator="*",
left=Int32(value=1),
right=Int32(value=2))))
def test_if_loop(self):
self.assertEqual(
self.parse(self.function_wrap("if ( i > 10 ) { i++; } ")),
self.function_wrap_node(
If(
condition=BinaryOperation(operator=">",
left=Variable(name="i"),
right=Int32(value=10)),
body=Block([
PostOperation(operator="++",
variable=Variable(name="i"))
]),
)))
def test_for_loop(self):
self.assertEqual(
self.parse(
self.function_wrap("for ( i = 0; i < 10; i++ ) { putc(i); }")),
self.function_wrap_node(
For(
initial=Assignment(left=Variable(name="i"),
right=Int32(value=0)),
condition=BinaryOperation(operator="<",
left=Variable(name="i"),
right=Int32(value=10)),
increment=PostOperation(operator="++",
variable=Variable(name="i")),
body=Block([Call(name="putc", args=[Variable(name="i")])]),
)))
def test_braceless_while_loop(self):
self.assertEqual(
self.parse(
self.function_wrap("""
while ( i < 10 )
i++;
""")),
self.function_wrap_node(
For(
condition=BinaryOperation(operator="<",
left=Variable(name="i"),
right=Int32(value=10)),
body=Block([
PostOperation(operator="++",
variable=Variable(name="i"))
]),
)))
def test_while_loop(self):
self.assertEqual(
self.parse(
self.function_wrap(
"while (string[i] != NULL) { putc(string[i++]); }")),
self.function_wrap_node(
For(condition=BinaryOperation(
operator="!=",
left=ArrayDereference(array=Variable(name="string"),
index=Variable("i")),
right=Null()),
body=Block([
Call(name="putc",
args=[
ArrayDereference(
array=Variable("string"),
index=PostOperation(
operator="++",
variable=Variable(name="i")))
])
]))))
def binop(self, p):
return BinaryOperation(operator=p[1].getstr(), left=p[0], right=p[2])