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).
71 lines
3.4 KiB
Plaintext
71 lines
3.4 KiB
Plaintext
// Phase 3 step 3.2 — locked-in golden test for the default Obj-C
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// selector mangling rule (Phase 3.0). One fixture covers the common
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// shapes (niladic, 1-arg through 4-arg, camelCase across pieces, and
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// the `#selector(...)` override). The accompanying `.ir` snapshot
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// records each resolved selector string as an `OBJC_METH_VAR_NAME_*`
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// constant — a change to `deriveObjcSelector` produces ONE diff that
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// surfaces every affected case at once.
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//
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// Per the rule:
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// - Niladic (arity 0): name verbatim. `length` → "length".
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// - Arity N (1..): split the sx name on `_`; each piece becomes a
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// keyword with a trailing `:`. Piece count must equal arity.
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// - `#selector("...")` overrides the mangling entirely; the literal
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// string is used as the selector. Arity is the user's contract.
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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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SxManglingProbe :: #objc_class("SxManglingProbe") extern {
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length :: (self: *Self) -> i32;
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addObject :: (self: *Self, a: i32) -> i32;
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combine_and :: (self: *Self, a: i32, b: i32) -> i32;
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insert_after_index :: (self: *Self, a: i32, b: i32, c: i32) -> i32;
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add_observer_for_event :: (self: *Self, a: i32, b: i32, c: i32, d: i32) -> i32;
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initWithFrame_options :: (self: *Self, f: i32, o: i32) -> i32;
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custom_name :: (self: *Self) -> i32 #selector("actualSelectorName");
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}
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universal_imp :: (self: *void, _cmd: *void, a: i32, b: i32, c: i32, d: i32) -> i32 abi(.c) {
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// Returns the arg count's witness; the test doesn't check return
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// values, only that dispatch succeeds for each selector shape.
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a + b + c + d
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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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cls := objc_allocateClassPair(ns_object, "SxManglingProbe".ptr, 0);
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// Register one IMP per selector we'll dispatch to.
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class_addMethod(cls, sel_registerName("length".ptr), xx universal_imp, "i@:".ptr);
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class_addMethod(cls, sel_registerName("addObject:".ptr), xx universal_imp, "i@:i".ptr);
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class_addMethod(cls, sel_registerName("combine:and:".ptr), xx universal_imp, "i@:ii".ptr);
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class_addMethod(cls, sel_registerName("insert:after:index:".ptr), xx universal_imp, "i@:iii".ptr);
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class_addMethod(cls, sel_registerName("add:observer:for:event:".ptr), xx universal_imp, "i@:iiii".ptr);
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class_addMethod(cls, sel_registerName("initWithFrame:options:".ptr), xx universal_imp, "i@:ii".ptr);
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class_addMethod(cls, sel_registerName("actualSelectorName".ptr), xx universal_imp, "i@:".ptr);
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objc_registerClassPair(cls);
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inst : *SxManglingProbe = xx class_createInstance(cls, 0);
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// One call per mangling shape; the IR snapshot pins what
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// selector string each sx name resolves to.
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_ = inst.length();
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_ = inst.addObject(1);
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_ = inst.combine_and(1, 2);
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_ = inst.insert_after_index(1, 2, 3);
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_ = inst.add_observer_for_event(1, 2, 3, 4);
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_ = inst.initWithFrame_options(1, 2);
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_ = inst.custom_name();
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print("mangling table OK\n");
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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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