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struct Variable {
name: &'static str,
indices: Vec<usize>,
}
impl Variable {
fn new(name: &'static str, indices: Vec<usize>) -> Variable {
Variable {
name: name,
indices: indices,
}
}
}
impl ToString for Variable {
fn to_string(&self) -> String {
let mut s = self.name.to_string();
if self.indices.len() > 0 {
s = s + "[" + &self.indices[0].to_string();
for i in 1..self.indices.len() {
s = s + "," + &self.indices[i].to_string();
}
s = s + "]";
}
return s
}
}
#[test]
fn var_to_string() {
let v1 = Variable::new("a", vec![]);
assert_eq!(v1.to_string(), "a");
let v2 = Variable::new("a", vec![42]);
assert_eq!(v2.to_string(), "a[42]");
let v3 = Variable::new("a", vec![1, 2, 3]);
assert_eq!(v3.to_string(), "a[1,2,3]");
}