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).
42 lines
1.5 KiB
Plaintext
42 lines
1.5 KiB
Plaintext
// Phase 1 step 1.10 (PLAN-FFI.md): multi-keyword Obj-C selectors
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// through `#objc_call`. Selector mangling matches clang's: every
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// `:` in the source-level selector becomes a `_` in the symbol
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// name of the cached SEL slot (so `initWithFrame:options:` →
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// `OBJC_SELECTOR_REFERENCES_initWithFrame_options_`).
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//
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// The selector is opaque text to the lowering — no codegen change
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// needed beyond Phase 1.6's variadic argument list. This test
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// pins that the round-trip works end-to-end via class_addMethod
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// + a real IMP that consumes both keyword args.
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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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combine_imp :: (self: *void, _cmd: *void, a: i32, b: i32) -> i32 abi(.c) {
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a * 100 + b
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}
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main :: () -> i32 {
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inline if OS == .macos {
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ns_object := objc_getClass("NSObject".ptr);
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my_cls := objc_allocateClassPair(ns_object, "SxComboProbe".ptr, 0);
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// Two-keyword selector: `combine:and:`.
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// Method type encoding: i@:ii → returns int, implicit (self, _cmd),
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// takes two ints. (`i` = int, `@` = id, `:` = SEL.)
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sel := sel_registerName("combine:and:".ptr);
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ok := class_addMethod(my_cls, sel, xx combine_imp, "i@:ii".ptr);
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print("addMethod = {}\n", ok);
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objc_registerClassPair(my_cls);
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instance := class_createInstance(my_cls, 0);
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r := #objc_call(i32)(instance, "combine:and:", 7, 42);
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print("combine(7, 42) = {}\n", r);
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}
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inline if OS != .macos {
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print("skipped (not macos)\n");
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}
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0
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}
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