def test_cppgen_funcdef():
exp = """template<>
void hello(int a, std::string b) {
int x=5;
int y=6;
int z=x+y;
}
"""
n = FuncDef(type=Raw(code="void"),
name=Var(name="hello"),
args=[
Decl(type=Type(cpp="int"), name=Var(name="a")),
Decl(type=Type(cpp="std::string"), name=Var(name="b"))
],
body=[
ExprStmt(child=DeclAssign(type=Type(cpp="int"),
target=Var(name="x"),
value=Raw(code="5"))),
ExprStmt(child=DeclAssign(type=Type(cpp="int"),
target=Var(name="y"),
value=Raw(code="6"))),
ExprStmt(child=DeclAssign(
type=Type(cpp="int"),
target=Var(name="z"),
value=BinOp(x=Var(name="x"), op="+", y=Var(name="y"))))
],
tspecial=True)
obs = CPPGEN.visit(n)
assert_equal(exp, obs)
def test_cppgen_case():
exp = """case 3: {
b++;
break;
}\n"""
n = Case(cond=Raw(code="3"),
body=[
ExprStmt(child=RightUnaryOp(name=Var(name="b"), op="++")),
Raw(code="break;")
])
obs = CPPGEN.visit(n)
assert_equal(exp, obs)
def test_cppgen_if():
exp = """
if(x==y){
x=1;\n
}else if(x>y){
x=2;\n
}else{
x=3;\n
}""".strip() + "\n"
n = If(cond=BinOp(x=Var(name="x"), op="==", y=Var(name="y")),\
body=[ExprStmt(child=Assign(target=Var(name="x"), value=Raw(code="1")))],\
elifs=[(BinOp(x=Var(name="x"), op=">", y=Var(name="y")), [ExprStmt(child=Assign(target=Var(name="x"), value=Raw(code="2")))])],\
el=ExprStmt(child=Assign(target=Var(name="x"), value=Raw(code="3"))))
obs = CPPGEN.visit(n)
assert_equal(exp, obs)
def test_cppgen_for():
exp = """
for(int i=0;i<5;i++){
a++;
b++;
c[i]=a+b;\n
}""".strip() + "\n"
n = For(adecl=DeclAssign(type=Type(cpp="int"), target=Var(name="i"), value=Raw(code="0")),\
cond=BinOp(x=Var(name="i"), op="<", y=Raw(code="5")),\
incr=RightUnaryOp(name=Var(name="i"), op="++"),\
body=[ExprStmt(child=RightUnaryOp(name=Var(name="a"), op="++")),
ExprStmt(child=RightUnaryOp(name=Var(name="b"), op="++")),
ExprStmt(child=Assign(target=RightUnaryOp(name=Var(name="c"), op="[i]"),
value=BinOp(x=Var(name="a"), op="+", y=Var(name="b"))))])
obs = CPPGEN.visit(n)
assert_equal(exp, obs)
def test_cppgen_block():
exp = """int x=5;
int y=6;
int z=x+y;\n"""
n = Block(nodes=[
ExprStmt(child=DeclAssign(
type=Type(cpp="int"), target=Var(name="x"), value=Raw(code="5"))),
Block(nodes=[
ExprStmt(child=DeclAssign(type=Type(cpp="int"),
target=Var(name="y"),
value=Raw(code="6"))),
ExprStmt(child=DeclAssign(
type=Type(cpp="int"),
target=Var(name="z"),
value=BinOp(x=Var(name="x"), op="+", y=Var(name="y"))))
])
])
obs = CPPGEN.visit(n)
assert_equal(exp, obs)