Files
sx/examples/0808-memory-xx-value-routes-through-context-allocator.sx
agra d8076b9333 lang: rename signed integer types sN -> iN
Surface rename of the signed integer family: s1..s64 become i1..i64
(u1..u64, usize, isize unchanged). 'string' keeps the s-prefix arm in
name classification; width parsing moves to the i-prefix arm next to
isize.

Internal TypeId tags follow the surface (.s8/.s16/.s32/.s64 ->
.i8/.i16/.i32/.i64), as do mono-key mangle fragments (ptr_i64,
tu_i64_bool) and all display/diagnostic formatting (i{d}).

Migrated in the same sweep: stdlib + examples + issue repros + FFI C
companions (shared symbol names like ffi_id_i64), expected
stdout/stderr/ir snapshots, specs.md, readme.md, CLAUDE.md/AGENTS.md,
implementation_plan.md, docs/, issue writeups. Vendored stb_image and
historical flow state left untouched.

zig build test: 426/426; examples suite: 595/595.
2026-06-12 09:31:53 +03:00

46 lines
1.4 KiB
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// Phase 1.1 — the compiler-internal heap-copy that backs `xx <rvalue>`
// protocol erasure must dispatch through `context.allocator`, not call
// libc malloc directly. So when a `push Context.{ allocator = tracer }`
// block is active, a `xx StructLiteral.{}` inside it MUST be allocated
// by the tracker.
//
// Note: `xx` only heap-copies for RVALUES (struct literals, call results).
// `xx <lvalue>` (an identifier, field access, index, or deref) borrows
// the operand's storage, so it never allocates and never reaches this
// path. See specs.md §3 — Protocol value ownership and lifetime.
#import "modules/std.sx";
#import "modules/std/mem.sx"; // `Allocator` is non-transitive: name it, import it.
Tracer :: struct {
count: i64;
init :: () -> *Tracer {
t : *Tracer = xx libc_malloc(size_of(Tracer));
t.count = 0;
t
}
}
impl Allocator for Tracer {
alloc_bytes :: (self: *Tracer, size: i64) -> *void {
self.count += 1;
return libc_malloc(size);
}
dealloc_bytes :: (self: *Tracer, ptr: *void) {
libc_free(ptr);
}
}
ByValue :: struct { x: i64; y: i64; }
main :: () -> i32 {
tracer := Tracer.init();
push Context.{ allocator = xx tracer, data = null } {
// Struct-literal operand: rvalue → heap-copy through context.allocator.
ignore : Allocator = xx ByValue.{ x = 1, y = 2 };
_ = ignore;
}
print("Tracer.count = {}\n", tracer.count);
0
}