japl/tests/japl/shadowing.jpl

//[Test: shadowing]
//[source: mixed]
//similar to vars.jpl, but more focused on shadowing

// simple shadowing
var x = 4;
{
    var x = 5;
    print(x);//stdout:5
}
print(x);//stdout:4

// type changing shadowing
var y = true;
{
    var y = 2;
    print(y);//stdout:2
}
print(y);//stdout:true

// no shadowing here
var z = 3;
{
    z = true;
    print(z);//stdout:true
}
print(z);//stdout:true

//in-function shadowing
fun shadow(x) {
    //will be called once with the input 3
    print(x);//stdout:3
    {
        var x = 4;
        print(x);//stdout:4
    }
    print(x);//stdout:3
    x = nil;
    print(x);//stdout:nil
    return x;
}

print(shadow(3));//stdout:nil

//shadowing functions
fun hello() {
    print("hello");
}
hello();//stdout:hello
{
    fun hello() {
        print("hello in");
    }
    hello();//stdout:hello in
    {
        fun hello() {
            print("hello inmost");
        }
        hello();//stdout:hello inmost
    }
    hello();//stdout:hello in
}
hello();//stdout:hello

//functions shadowing with type change
fun eat() {
    print("nom nom nom");
}
eat();//stdout:nom nom nom
{
    var eat = 4;
    print(eat);//stdout:4
    {{{{{
        eat = 5;
    }}}}} //multiple scopes haha
    print(eat);//stdout:5
}
eat();//stdout:nom nom nom
//[end]
//[end]