def test_main_with_multiple_parameters(self):
self.assertEqual(
self.parse(
"int main(int argc, char **argv, char **env) { return 0; }"),
Program(units=[
Function(return_type=Type(base='int'),
name="main",
params=[
VariableDeclaration(name="argc",
vtype=Type(base="int")),
VariableDeclaration(
name="argv",
vtype=Type(base="pointer",
reference=Type(base="pointer",
reference=Type(
base="char")))),
VariableDeclaration(
name="env",
vtype=Type(base="pointer",
reference=Type(base="pointer",
reference=Type(
base="char")))),
],
body=Block([ReturnStatement(value=Int32(value=0))]))
]))
def function_wrap_node(self, node):
return Program([
Function(return_type=Type(base="int"),
name="main",
params=[],
body=Block([node]))
])
def function_with_args(self, p):
return Function(return_type=p[0],
name=p[1].getstr(),
params=[
VariableDeclaration(name=None, vtype=x, value=None)
for x in p[3].get_items()
],
prototype=True)
def test_main_with_no_parameters(self):
self.assertEqual(
self.parse("int main(void) { return 0; }"),
Program(units=[
Function(return_type=Type(base='int'),
name="main",
params=[],
body=Block([ReturnStatement(value=Int32(value=0))]))
]))
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_auxiliary_function(self):
self.assertEqual(
self.parse("""
int foo(void) {
return 12;
}
int main(void) {
return foo();
}
"""),
Program([
Function(return_type=Type(base='int'),
name="foo",
params=[],
body=Block(
[ReturnStatement(value=Int32(value=12))], )),
Function(return_type=Type(base='int'),
name="main",
params=[],
body=Block([
ReturnStatement(value=Call(name="foo",
args=[]), ),
])),
]))
def test_function_arguments(self):
self.assertEqual(
self.parse("int puts(const char* string) { return 0; }"),
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([ReturnStatement(value=Int32(value=0))]))
]))
def test_main_function(self):
self.assertEqual(
self.parse("""
int main(void) {
return puts("Hello, world!");
}
"""),
Program([
Function(return_type=Type(base='int'),
name="main",
params=[],
body=Block([
ReturnStatement(value=Call(
name="puts", args=[String("Hello, world!")]))
]))
]))
def test_prototype_with_named_arguments(self):
self.assertEqual(
self.parse("int foo(int i, long l, double d, char *cp);"),
Program([
Function(
return_type=Type(base='int'),
name="foo",
params=[
VariableDeclaration(name="i", vtype=Type(base="int")),
VariableDeclaration(name="l", vtype=Type(base="long")),
VariableDeclaration(name="d",
vtype=Type(base="double")),
VariableDeclaration(name="cp",
vtype=Type(
base="pointer",
reference=Type(base="char"))),
],
prototype=True,
)
]))
def function_with_args(self, p):
return Function(return_type=p[0],
name=p[1].getstr(),
params=p[3].get_items(),
prototype=True)
def function_void_param(self, p):
return Function(return_type=p[0],
name=p[1].getstr(),
params=[],
prototype=True)
def function_void_param(self, p):
return Function(return_type=p[0],
name=p[1].getstr(),
params=[],
body=p[5])