1// module `package::shadow`: local declarations shadowing global declarations
2// and imported items.
3
4import constants::PI;
5import package::util::dot2;
6
7const level: f32 = 1.0;
8
9fn uses_globals() -> f32 {
10    // module-scope names, not shadowed here.
11    return level + PI + dot2(vec2f(1.0), vec2f(2.0));
12}
13
14public fn shadowed_fn(dot2: f32) -> f32 {
15    // the formal parameter `dot2` shadows the imported function for the
16    // entire body; the import is still usable through `uses_globals`.
17    let base = uses_globals() + dot2;
18
19    // local `let` shadows the global const `level`.
20    let level = base + 1.0;
21
22    // local `var` shadows the imported virtual constant `PI`.
23    var PI = 3.0;
24
25    {
26        // nested-scope shadowing of the local above (initializer sees the
27        // outer PI).
28        let PI = PI * 2.0;
29        return level + PI;
30    }
31}