Files
sx/examples/errors/1000-errors-sets.sx
agra 66bdc70bf1 test: group examples into per-category folders
Move examples/*.sx and their expected/ snapshots into per-category
subfolders (examples/<category>/...). Folder = leading filename token,
with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus
runner and LSP sweep now discover each category's expected/ dir, while
issues/ stays flat. Example 1058's repo-root-relative companion import
is made file-relative. Path strings embedded in 164 snapshots were
regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
2026-06-21 14:41:34 +03:00

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// Error-set declarations + `error.X` tag values + enum-like `==` typing
// (ERR step E1.1). A declared `error { ... }` set is a real type with a u32
// runtime layout; `error.X` is its tag value — the named set when context
// provides one (membership-checked), else the raw global u32 id. Tags compare
// with an `error.X` literal or another error-set value. The rejections live in
// `examples/218-error-set-typing.sx`.
#import "modules/std.sx";
ParseErr :: error { BadDigit, Overflow, Empty }
main :: () -> i32 {
c : ParseErr = error.BadDigit;
d : ParseErr = error.Overflow;
r : i32 = 0;
if c == error.BadDigit { r = r + 1; } // true -> +1
if c == error.Overflow { r = r + 2; } // false
if c == d { r = r + 4; } // false (BadDigit != Overflow)
if d == error.Overflow { r = r + 8; } // true -> +8
tag : u32 = error.Empty; // u32 context -> raw global tag id
if tag != 0 { r = r + 16; } // tag ids are >= 1 -> +16
print("error-set result: {}\n", r); // -> 25
return r;
}