d8076b9333
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.
29 lines
1.1 KiB
Plaintext
29 lines
1.1 KiB
Plaintext
// `#foreign` C-variadic tail: trailing `..args: []T` on a foreign fn maps
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// to the C calling convention's `...`. Extras at the call site are
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// passed via the variadic slot with the standard default argument
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// promotion (i8/i16/bool → i32, f32 → f64) applied implicitly.
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#import "modules/std.sx";
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#import c {
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#source "1218-ffi-foreign-cvariadic.c";
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};
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sx_ffi_sum_ints :: (n: i32, ..args: []i32) -> i64 #foreign;
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sx_ffi_avg_doubles :: (n: i32, ..args: []f64) -> f64 #foreign;
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sx_ffi_count_args :: (tag: *u8, ..args: []*u8) -> i32 #foreign;
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main :: () -> i32 {
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print("sum_ints(3, 10, 20, 30) = {}\n", sx_ffi_sum_ints(3, 10, 20, 30));
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print("sum_ints(0) = {}\n", sx_ffi_sum_ints(0));
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print("avg_doubles(2) = {}\n", sx_ffi_avg_doubles(2, 1.5, 2.5));
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print("avg_doubles(3) = {}\n", sx_ffi_avg_doubles(3, 1.0, 2.0, 3.0));
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a := "alpha".ptr;
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b := "beta".ptr;
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g := "gamma".ptr;
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sentinel : *u8 = null;
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print("count_args(3 strs) = {}\n", sx_ffi_count_args("tag".ptr, a, b, g, sentinel));
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0
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}
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