66bdc70bf1
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.
36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
// Rejection counterpart to 1046 (ERR step E1.8). Reading a failable's value slot
|
|
// where its error is NOT proven absent is a compile error. Two unproven shapes:
|
|
//
|
|
// (A) reading the value inside the `if err { … }` error path itself
|
|
// (B) reading the value after a bare tag-compare (`if err == error.X`), which
|
|
// narrows the tag but proves nothing about absence
|
|
//
|
|
// Each read is rejected with the E1.8 diagnostic; the program never runs (exit 1).
|
|
|
|
#import "modules/std.sx";
|
|
|
|
E :: error { Bad }
|
|
|
|
parse :: (n: i32) -> (i32, !E) {
|
|
if n < 0 { raise error.Bad; }
|
|
return n * 10;
|
|
}
|
|
|
|
// (A) the read sits on the error path — `err` is present here, not absent.
|
|
bad_a :: () -> i32 {
|
|
v, err := parse(5);
|
|
if err { return v; } // REJECTED: err present on this path
|
|
return 0;
|
|
}
|
|
|
|
// (B) a tag-compare narrows which error, but does not prove there is none.
|
|
bad_b :: () -> i32 {
|
|
v, err := parse(5);
|
|
if err == error.Bad { return 1; }
|
|
return v; // REJECTED: err not proven absent
|
|
}
|
|
|
|
main :: () -> i32 {
|
|
return bad_a() + bad_b();
|
|
}
|