Rust to assembly: Arrays, Tuples, Box, and Option handling

tutorials
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Let's look at the following Rust code to understand how arrays, tuples, Option enums, and Box smart pointer allocations are managed at the assembly level.

The generated code is explained via a flowchart and annotated assembly, making it easy to follow the assembly code without a deep understanding of x86-64 assembly.

:link: Rust to assembly: Arrays, Tuples, Box, and Option handling

pub struct Coordinate(f64, f64);

pub struct Line(Coordinate, Coordinate);

pub fn make_quad_coordinates(maybe_coordinate: Option<Coordinate>)
       -> Option<Box<[Coordinate; 4]>> {
    let Coordinate(x, y) = maybe_coordinate?;
    Some(Box::new([
        Coordinate(x, y),
        Coordinate(-x, -y),
        Coordinate(-x, y),
        Coordinate(x, -y),
    ]))
}

pub fn cross_lines_from_quad_coordinates(
    maybe_coordinate: Option<Coordinate>,) 
     -> Option<(Line, Line)> {
    let [a, b, c, d] = *make_quad_coordinates(maybe_coordinate)?;
    Some((Line(a, b), Line(c, d)))
}
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