a32cc2dc27
`examples/ffi-objc-dsl-07-mangling-table.sx` exercises every common
mangling shape in one fixture and pins the resolved selectors via
both `.txt` and `.ir` snapshots:
| sx method | derived selector |
|-----------------------------------|----------------------------|
| `length` | `length` |
| `addObject(o)` | `addObject:` |
| `combine_and(a, b)` | `combine:and:` |
| `insert_after_index(a, b, c)` | `insert:after:index:` |
| `add_observer_for_event(a, b, c, d)` | `add:observer:for:event:` |
| `initWithFrame_options(f, o)` | `initWithFrame:options:` |
| `custom_name #selector("actualSelectorName")` | `actualSelectorName` |
The class is synthesized at runtime via `objc_allocateClassPair` +
`class_addMethod` per selector (mirrors the pattern in
`ffi-objc-dsl-{01..05}.sx`), so the test actually dispatches through
the real Obj-C runtime on macOS.
Single commit because the implementation already shipped in 3.0/3.2;
this is a new regression that locks in current behavior, not a
test-then-make-green pair.
The `.ir` snapshot opts in via the existing run_examples.sh mechanism
(presence of a `.ir` file for the same name triggers capture). The
captured `OBJC_METH_VAR_NAME_*` constants surface every selector
string change at a glance.
166/166 tests.
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/compiler.sx";
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#import "modules/std/objc.sx";
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SxManglingProbe :: #foreign #objc_class("SxManglingProbe") {
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length :: (self: *Self) -> s32;
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addObject :: (self: *Self, a: s32) -> s32;
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combine_and :: (self: *Self, a: s32, b: s32) -> s32;
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insert_after_index :: (self: *Self, a: s32, b: s32, c: s32) -> s32;
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add_observer_for_event :: (self: *Self, a: s32, b: s32, c: s32, d: s32) -> s32;
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initWithFrame_options :: (self: *Self, f: s32, o: s32) -> s32;
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custom_name :: (self: *Self) -> s32 #selector("actualSelectorName");
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}
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universal_imp :: (self: *void, _cmd: *void, a: s32, b: s32, c: s32, d: s32) -> s32 callconv(.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 :: () -> s32 {
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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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