cd5b958d19
Introduce the welded comptime `compiler` library (`#library "compiler"` +
`abi(.zig) extern compiler`), per design/comptime-compiler-api.md, and unify
`callconv(...)` into the new `abi(...)` annotation.
abi(...) replaces callconv(...):
- New ABI enum { default, c, zig, pure }; `abi(.c|.zig|.pure)` parses in the
postfix slot before extern/export (and standalone). `kw_callconv` -> `kw_abi`.
- Migrated 52 sx files, the call-convention-mismatch diagnostic, and docs
(readme/specs) from `callconv(.c)` to `abi(.c)`.
Phase 1 — welded compiler library (parse -> registry -> validation -> bridge):
- `abi(.zig) extern compiler` parses on fn decls (carries abi/extern_lib) and
struct decls (StructDecl.abi/extern_lib).
- `#library "compiler"` is the comptime-only internal surface — never dlopen'd.
- src/ir/compiler_lib.zig: the binding registry (the safety boundary). `Field`
welded to StructInfo.Field with layout baked from the real Zig type
(@offsetOf/@sizeOf); `findType`/`findFn`. Welded structs are layout-validated
at registration (field set + total size) as a header checked against the impl.
- Host-call bridge: a `fn abi(.zig) extern compiler` dispatches under the
comptime interp to its registered Zig handler (intern/text_of round-trip),
never dlsym. IR Function.compiler_welded; validated in declareFunction.
- Comptime-only enforcement: a runtime call to a welded fn is a clean
build-gating error (emitCall), not an undefined-symbol link failure.
Phase 2.1 — byte-layout weld foundation:
- Decision: full byte-layout weld (sx struct laid out byte-identically to the
bound Zig type). Registered StructInfo (first non-natural / Zig-reordered
layout). `computeWeldPlan` — pure offset-ordered element plan + padding +
sx-field->LLVM-element remap; unit-tested. Emit/interp wiring is the next
sub-step (2.2+, see current/CHECKPOINT-COMPILER-API.md).
Examples: 0625/0626 (welded struct + fn round-trip), 1183/1184/1185
(layout-mismatch, unexported-fn, runtime-call diagnostics).
62 lines
2.0 KiB
Plaintext
62 lines
2.0 KiB
Plaintext
// M1.2 A.7 — full instance state round-trip on a sx-defined
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// `#objc_class`. The plan's first integration smoke test
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// (A.2/A.3/A.4 integration through the now-open dispatch gate).
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//
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// What this exercises end-to-end:
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// 1. `SxFoo.alloc()` — sx-side call lowers to objc_msgSend(SxFoo, sel_alloc).
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// The runtime invokes the synthesized +alloc IMP (M1.2 A.5)
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// which allocates an instance + state struct and binds them
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// via __sx_state.
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// 2. `f.bump()` — sx-side method call lowers to
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// objc_msgSend(f, sel_bump). Runtime dispatches to the IMP
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// trampoline (M1.2 A.4b.ii) which reads __sx_state to find
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// the state pointer and forwards to the sx body
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// `SxFoo.bump(__sx_default_context, state)`. Body mutates
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// self.counter (M1.2 A.3).
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// 3. Repeat to confirm the state persists across calls.
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// 4. release — synthesized -dealloc (M1.2 A.6) frees the state
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// and chains to [super dealloc].
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#import "modules/std.sx";
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#import "modules/build.sx";
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#import "modules/ffi/objc.sx";
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SxFoo :: #objc_class("SxFoo") {
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counter: i32;
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// Declare the synthesized class methods so sx-side call sites
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// can resolve them. +alloc / -dealloc IMPs are emitted by the
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// compiler at module-init (M1.2 A.5 / A.6); these declarations
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// just give the names a typed contract.
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alloc :: () -> *SxFoo;
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bump :: (self: *Self) {
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self.counter += 1;
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}
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get :: (self: *Self) -> i32 {
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return self.counter;
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}
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}
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main :: () -> i32 {
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inline if OS == .macos {
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f := SxFoo.alloc();
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if f == null { print("FAIL: alloc returned null\n"); return 1; }
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f.bump();
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f.bump();
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f.bump();
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print("counter: {}\n", f.get()); // expected: 3
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// release
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sel_release : SEL = sel_registerName("release".ptr);
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release_fn : (obj: *void, sel: *void) -> void abi(.c) = xx objc_msgSend;
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release_fn(xx f, sel_release);
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}
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inline if OS != .macos {
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print("counter: 3\n");
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}
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0
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}
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