Files
sx/examples/0520-packs-pack-dynamic-type-name.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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// Variadic heterogeneous type packs — step 4A final-slice
// follow-up. `type_name(<dynamic-arg>)` where the argument is
// NOT a static type expression (e.g. `list[i]` indexing into
// a `$args`-derived `[]Type` slice) silently folded to "s64"
// because `resolveTypeArg`'s catch-all `else => .s64` lied —
// the kind of silent unimplemented arm the project's REJECTED
// PATTERNS forbid.
//
// The fix: `tryLowerReflectionCall` now splits static vs
// dynamic args via `isStaticTypeArg(node)`. Static → fold to
// const_string at lower time (today's fast path). Dynamic →
// emit `callBuiltin(.type_name, [arg_ref])` for the interp's
// runtime arm to handle.
//
// Type values are comptime-only — the dynamic path only works
// inside a comptime context (`#run` / `#insert`). The test
// runs `walk(42, "hi")` at `#run` time and prints the result.
#import "modules/std.sx";
#import "modules/compiler.sx";
walk :: (..$args) -> string {
list := $args;
s := "";
i : s64 = 0;
while i < list.len {
s = concat(s, type_name(list[i]));
i = i + 1;
}
return s;
}
show :: () {
print("{}\n", walk(42, "hi"));
}
#run show();
main :: () { print("rt\n"); }