mirror of
https://github.com/ziglang/zig.git
synced 2026-01-11 09:55:12 +00:00
3671582c15
The purpose of this is: * Only one way to do things * Changing a function with void return type to return a possible error becomes a 1 character change, subtly encouraging people to use errors. See #632 Here are some imperfect sed commands for performing this update: remove arrow: ``` sed -i 's/\(\bfn\b.*\)-> /\1/g' $(find . -name "*.zig") ``` add void: ``` sed -i 's/\(\bfn\b.*\))\s*{/\1) void {/g' $(find ../ -name "*.zig") ``` Some cleanup may be necessary, but this should do the bulk of the work.
46 lines
1.1 KiB
Zig
46 lines
1.1 KiB
Zig
const assert = @import("std").debug.assert;
|
|
|
|
var result: [3]u8 = undefined;
|
|
var index: usize = undefined;
|
|
|
|
error FalseNotAllowed;
|
|
|
|
fn runSomeErrorDefers(x: bool) %bool {
|
|
index = 0;
|
|
defer {result[index] = 'a'; index += 1;}
|
|
errdefer {result[index] = 'b'; index += 1;}
|
|
defer {result[index] = 'c'; index += 1;}
|
|
return if (x) x else error.FalseNotAllowed;
|
|
}
|
|
|
|
test "mixing normal and error defers" {
|
|
assert(runSomeErrorDefers(true) catch unreachable);
|
|
assert(result[0] == 'c');
|
|
assert(result[1] == 'a');
|
|
|
|
const ok = runSomeErrorDefers(false) catch |err| x: {
|
|
assert(err == error.FalseNotAllowed);
|
|
break :x true;
|
|
};
|
|
assert(ok);
|
|
assert(result[0] == 'c');
|
|
assert(result[1] == 'b');
|
|
assert(result[2] == 'a');
|
|
}
|
|
|
|
test "break and continue inside loop inside defer expression" {
|
|
testBreakContInDefer(10);
|
|
comptime testBreakContInDefer(10);
|
|
}
|
|
|
|
fn testBreakContInDefer(x: usize) void {
|
|
defer {
|
|
var i: usize = 0;
|
|
while (i < x) : (i += 1) {
|
|
if (i < 5) continue;
|
|
if (i == 5) break;
|
|
}
|
|
assert(i == 5);
|
|
}
|
|
}
|