80 lines
1.2 KiB
Rust
80 lines
1.2 KiB
Rust
// Resources can't be copied, but storing into data structures counts
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// as a move unless the stored thing is used afterwards.
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resource r(i: @mutable int) {
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*i = *i + 1;
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}
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fn test_box() {
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let i = @mutable 0;
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{
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let a <- @r(i);
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}
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assert *i == 1;
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}
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fn test_rec() {
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let i = @mutable 0;
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{
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let a <- {x: r(i)};
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}
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assert *i == 1;
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}
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fn test_tag() {
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tag t {
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t0(r);
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}
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let i = @mutable 0;
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{
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let a <- t0(r(i));
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}
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assert *i == 1;
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}
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fn test_tup() {
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let i = @mutable 0;
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{
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let a <- (r(i), 0);
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}
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assert *i == 1;
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}
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fn test_unique() {
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let i = @mutable 0;
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{
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let a <- ~r(i);
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}
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assert *i == 1;
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}
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fn test_box_rec() {
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let i = @mutable 0;
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{
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let a <- @{
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x: r(i)
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};
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}
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assert *i == 1;
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}
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fn test_obj() {
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obj o(_f: r) {}
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let i = @mutable 0;
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let rr = r(i);
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{ let _oo = o(rr); }
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assert *i == 1;
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}
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fn main() {
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test_box();
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test_rec();
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// FIXME: tag constructors don't optimize their arguments into moves
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// test_tag();
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test_tup();
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test_unique();
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test_box_rec();
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test_obj();
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}
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