Learning Zig from the official language reference.
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zig-langref/error_return_traces.zig

47 lines
632 B

const std = @import("std");
const debug = std.debug;
pub fn main() !void {
try foo(12);
}
fn foo(x: i32) !void {
if (x >= 5) {
try bar();
} else {
try bang2();
}
}
fn bar() !void {
if (baz()) {
try quux();
} else |err| switch (err) {
error.FileNotFound => try hello(),
else => try another(),
}
}
fn baz() !void {
try bang1();
}
fn quux() !void {
try bang2();
}
fn hello() !void {
try bang2();
}
fn another() !void {
try bang1();
}
fn bang1() !void {
return error.FileNotFound;
}
fn bang2() !void {
return error.PermissionDenied;
}