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.
47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
// Block value rule: a block's value is its last statement ONLY when that
|
|
// statement is a trailing expression with NO `;`. A trailing `;` discards the
|
|
// value, leaving the block void. This makes value-vs-statement explicit and lets
|
|
// the compiler reject "forgot to produce a value".
|
|
//
|
|
// { … expr } → value is `expr`
|
|
// { … expr; } → void (value discarded)
|
|
//
|
|
// Match arms are exempt: the arm `;` is an arm terminator, so `case .x: expr;`
|
|
// still yields `expr` (only an explicit inner braced block follows the rule).
|
|
|
|
#import "modules/std.sx";
|
|
|
|
// Implicit return: trailing expression, no `;`.
|
|
double :: (n: i32) -> i32 { n * 2 }
|
|
|
|
// if/else as a value — each branch's last expression has no `;`.
|
|
sign :: (n: i32) -> i32 {
|
|
if n < 0 { -1 } else if n > 0 { 1 } else { 0 }
|
|
}
|
|
|
|
// A value-producing block bound to a name.
|
|
sum3 :: (a: i32, b: i32, c: i32) -> i32 {
|
|
t := { x := a + b; x + c }; // block value is `x + c`
|
|
t
|
|
}
|
|
|
|
// Match arms keep their `;` (exempt): the arm `;` is an arm terminator, so each
|
|
// arm still yields its expression as the match value.
|
|
classify :: (n: i32) -> i32 {
|
|
if n == {
|
|
case 0: 100;
|
|
case 1: 10;
|
|
else: 7;
|
|
}
|
|
}
|
|
|
|
main :: () -> i32 {
|
|
total : i32 = 0;
|
|
total = total + double(10); // 20
|
|
total = total + sign(-7); // -1
|
|
total = total + sum3(1, 2, 3); // 6
|
|
total = total + classify(1); // 10
|
|
print("block-value total: {}\n", total); // 20 - 1 + 6 + 10 = 35
|
|
total
|
|
}
|