zig/test/cases3/defer.zig

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2016-12-20 05:45:15 +08:00
var result: [3]u8 = undefined;
var index: usize = undefined;
error FalseNotAllowed;
fn runSomeDefers(x: bool) -> %bool {
index = 0;
defer {result[index] = 'a'; index += 1;};
%defer {result[index] = 'b'; index += 1;};
defer {result[index] = 'c'; index += 1;};
return if (x) x else error.FalseNotAllowed;
}
fn mixingNormalAndErrorDefers() {
@setFnTest(this);
assert(%%runSomeDefers(true));
assert(result[0] == 'c');
assert(result[1] == 'a');
const ok = runSomeDefers(false) %% |err| {
assert(err == error.FalseNotAllowed);
true
};
assert(ok);
assert(result[0] == 'c');
assert(result[1] == 'b');
assert(result[2] == 'a');
}
// TODO const assert = @import("std").debug.assert;
fn assert(ok: bool) {
if (!ok)
@unreachable();
}