Files
sx/examples/0903-optionals-optional-roundtrip.sx
agra 4e942b5373 test: migrate examples to XXXX-category-name layout + split expected streams
Rename all example tests/companions to the XXXX-category-test-name scheme
(per-category 100-blocks: basic 0010, types 0100, ... errors 1000,
diagnostics 1100, ffi 1200, ffi-objc 1300, ffi-jni 1400, vectors 1500,
platform 1600). Companions and dir/C fixtures move in lockstep with their
parent test; #import/#source/#include paths rewritten to match.

Expected output now lives in examples/expected/ (a sibling dir of the
tests) split into three streams per the new convention:
  <name>.exit / <name>.stdout / <name>.stderr  (+ optional <name>.ir)

run_examples.sh rewritten: scans examples/ and issues/ for an
expected/<name>.exit marker, captures stdout and stderr separately (no
more 2>&1), compares each stream + exit + optional IR snapshot.

Behavior validated unchanged: every renamed test reproduces its prior
merged output + exit (diffs limited to file paths/basenames embedded in
diagnostics + traces, which correctly reflect the new names). Suite:
292 passed, 0 failed. 50-smoke.sx split + issue relocation + docs follow
in subsequent commits.
2026-06-01 19:05:15 +03:00

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// Optional `?f32` fields in struct literals — exhaustively combine null/value
// for both fields, through both direct calls and protocol dispatch.
#import "modules/std.sx";
ProposedSize :: struct {
width: ?f32;
height: ?f32;
}
// Direct function — does it work?
direct_size :: (proposal: ProposedSize) -> f32 {
w := if pw := proposal.width { pw; } else { 100.0; };
h := if ph := proposal.height { ph; } else { 100.0; };
w + h;
}
Sizable :: protocol {
size :: (proposal: ProposedSize) -> f32;
}
Widget :: struct {}
impl Sizable for Widget {
size :: (self: *Widget, proposal: ProposedSize) -> f32 {
w := if pw := proposal.width { pw; } else { 100.0; };
h := if ph := proposal.height { ph; } else { 100.0; };
w + h;
}
}
main :: () -> void {
// Test 1: Direct call
print("=== Direct calls ===\n");
d1 := direct_size(ProposedSize.{ width = 50.0, height = null });
print("d1 = {}\n", d1);
d2 := direct_size(ProposedSize.{ width = null, height = 50.0 });
print("d2 = {}\n", d2);
d3 := direct_size(ProposedSize.{ width = null, height = null });
print("d3 = {}\n", d3);
d4 := direct_size(ProposedSize.{ width = 50.0, height = 60.0 });
print("d4 = {}\n", d4);
// Test 2: Protocol dispatch
print("=== Protocol dispatch ===\n");
w := Widget.{};
s : Sizable = w;
r1 := s.size(ProposedSize.{ width = 50.0, height = null });
print("r1 = {}\n", r1);
r2 := s.size(ProposedSize.{ width = null, height = 50.0 });
print("r2 = {}\n", r2);
r3 := s.size(ProposedSize.{ width = null, height = null });
print("r3 = {}\n", r3);
r4 := s.size(ProposedSize.{ width = 50.0, height = 60.0 });
print("r4 = {}\n", r4);
}