mirror of
https://github.com/Ed94/Odin.git
synced 2026-06-18 11:52:22 -07:00
Merge pull request #5064 from harold-b/hb/objc-classes
Add support for Objective-C class implementation
This commit is contained in:
gingerBill
GitHub
+654
-25
@@ -1173,6 +1173,344 @@ gb_internal lbProcedure *lb_create_objc_names(lbModule *main_module) {
|
||||
return p;
|
||||
}
|
||||
|
||||
String lb_get_objc_type_encoding(Type *t, isize pointer_depth = 0) {
|
||||
// NOTE(harold): See https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtTypeEncodings.html#//apple_ref/doc/uid/TP40008048-CH100
|
||||
|
||||
// NOTE(harold): Darwin targets are always 64-bit. Should we drop this and assume "q" always?
|
||||
#define INT_SIZE_ENCODING (build_context.metrics.int_size == 4 ? "i" : "q")
|
||||
switch (t->kind) {
|
||||
case Type_Basic: {
|
||||
switch (t->Basic.kind) {
|
||||
case Basic_Invalid:
|
||||
return str_lit("?");
|
||||
|
||||
case Basic_llvm_bool:
|
||||
case Basic_bool:
|
||||
case Basic_b8:
|
||||
return str_lit("B");
|
||||
|
||||
case Basic_b16:
|
||||
return str_lit("C");
|
||||
case Basic_b32:
|
||||
return str_lit("I");
|
||||
case Basic_b64:
|
||||
return str_lit("q");
|
||||
case Basic_i8:
|
||||
return str_lit("c");
|
||||
case Basic_u8:
|
||||
return str_lit("C");
|
||||
case Basic_i16:
|
||||
case Basic_i16le:
|
||||
case Basic_i16be:
|
||||
return str_lit("s");
|
||||
case Basic_u16:
|
||||
case Basic_u16le:
|
||||
case Basic_u16be:
|
||||
return str_lit("S");
|
||||
case Basic_i32:
|
||||
case Basic_i32le:
|
||||
case Basic_i32be:
|
||||
return str_lit("i");
|
||||
case Basic_u32le:
|
||||
case Basic_u32:
|
||||
case Basic_u32be:
|
||||
return str_lit("I");
|
||||
case Basic_i64:
|
||||
case Basic_i64le:
|
||||
case Basic_i64be:
|
||||
return str_lit("q");
|
||||
case Basic_u64:
|
||||
case Basic_u64le:
|
||||
case Basic_u64be:
|
||||
return str_lit("Q");
|
||||
case Basic_i128:
|
||||
case Basic_i128le:
|
||||
case Basic_i128be:
|
||||
return str_lit("t");
|
||||
case Basic_u128:
|
||||
case Basic_u128le:
|
||||
case Basic_u128be:
|
||||
return str_lit("T");
|
||||
case Basic_rune:
|
||||
return str_lit("I");
|
||||
case Basic_f16:
|
||||
case Basic_f16le:
|
||||
case Basic_f16be:
|
||||
return str_lit("s"); // @harold: Closest we've got?
|
||||
case Basic_f32:
|
||||
case Basic_f32le:
|
||||
case Basic_f32be:
|
||||
return str_lit("f");
|
||||
case Basic_f64:
|
||||
case Basic_f64le:
|
||||
case Basic_f64be:
|
||||
return str_lit("d");
|
||||
|
||||
case Basic_complex32: return str_lit("{complex32=ss}"); // No f16 encoding, so fallback to i16, as above in Basic_f16*
|
||||
case Basic_complex64: return str_lit("{complex64=ff}");
|
||||
case Basic_complex128: return str_lit("{complex128=dd}");
|
||||
case Basic_quaternion64: return str_lit("{quaternion64=ssss}");
|
||||
case Basic_quaternion128: return str_lit("{quaternion128=ffff}");
|
||||
case Basic_quaternion256: return str_lit("{quaternion256=dddd}");
|
||||
|
||||
case Basic_int:
|
||||
return str_lit(INT_SIZE_ENCODING);
|
||||
case Basic_uint:
|
||||
return build_context.metrics.int_size == 4 ? str_lit("I") : str_lit("Q");
|
||||
case Basic_uintptr:
|
||||
case Basic_rawptr:
|
||||
return str_lit("^v");
|
||||
|
||||
case Basic_string:
|
||||
return build_context.metrics.int_size == 4 ? str_lit("{string=*i}") : str_lit("{string=*q}");
|
||||
|
||||
case Basic_cstring: return str_lit("*");
|
||||
case Basic_any: return str_lit("{any=^v^v}"); // rawptr + ^Type_Info
|
||||
|
||||
case Basic_typeid:
|
||||
GB_ASSERT(t->Basic.size == 8);
|
||||
return str_lit("q");
|
||||
|
||||
// Untyped types
|
||||
case Basic_UntypedBool:
|
||||
case Basic_UntypedInteger:
|
||||
case Basic_UntypedFloat:
|
||||
case Basic_UntypedComplex:
|
||||
case Basic_UntypedQuaternion:
|
||||
case Basic_UntypedString:
|
||||
case Basic_UntypedRune:
|
||||
case Basic_UntypedNil:
|
||||
case Basic_UntypedUninit:
|
||||
GB_PANIC("Untyped types cannot be @encoded()");
|
||||
return str_lit("?");
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case Type_Named:
|
||||
case Type_Struct:
|
||||
case Type_Union: {
|
||||
Type* base = t;
|
||||
if (base->kind == Type_Named) {
|
||||
base = base_type(base);
|
||||
if(base->kind != Type_Struct && base->kind != Type_Union) {
|
||||
return lb_get_objc_type_encoding(base, pointer_depth);
|
||||
}
|
||||
}
|
||||
|
||||
const bool is_union = base->kind == Type_Union;
|
||||
if (!is_union) {
|
||||
// Check for objc_SEL
|
||||
if (internal_check_is_assignable_to(base, t_objc_SEL)) {
|
||||
return str_lit(":");
|
||||
}
|
||||
|
||||
// Check for objc_Class
|
||||
if (internal_check_is_assignable_to(base, t_objc_SEL)) {
|
||||
return str_lit("#");
|
||||
}
|
||||
|
||||
// Treat struct as an Objective-C Class?
|
||||
if (has_type_got_objc_class_attribute(base) && pointer_depth == 0) {
|
||||
return str_lit("#");
|
||||
}
|
||||
}
|
||||
|
||||
if (is_type_objc_object(base)) {
|
||||
return str_lit("@");
|
||||
}
|
||||
|
||||
|
||||
gbString s = gb_string_make_reserve(temporary_allocator(), 16);
|
||||
s = gb_string_append_length(s, is_union ? "(" :"{", 1);
|
||||
if (t->kind == Type_Named) {
|
||||
s = gb_string_append_length(s, t->Named.name.text, t->Named.name.len);
|
||||
}
|
||||
|
||||
// Write fields
|
||||
if (pointer_depth < 2) {
|
||||
s = gb_string_append_length(s, "=", 1);
|
||||
|
||||
if (!is_union) {
|
||||
for( auto& f : base->Struct.fields ) {
|
||||
String field_type = lb_get_objc_type_encoding(f->type, pointer_depth);
|
||||
s = gb_string_append_length(s, field_type.text, field_type.len);
|
||||
}
|
||||
} else {
|
||||
for( auto& v : base->Union.variants ) {
|
||||
String variant_type = lb_get_objc_type_encoding(v, pointer_depth);
|
||||
s = gb_string_append_length(s, variant_type.text, variant_type.len);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
s = gb_string_append_length(s, is_union ? ")" :"}", 1);
|
||||
|
||||
return make_string_c(s);
|
||||
}
|
||||
|
||||
case Type_Generic:
|
||||
GB_PANIC("Generic types cannot be @encoded()");
|
||||
return str_lit("?");
|
||||
|
||||
case Type_Pointer: {
|
||||
String pointee = lb_get_objc_type_encoding(t->Pointer.elem, pointer_depth +1);
|
||||
// Special case for Objective-C Objects
|
||||
if (pointer_depth == 0 && pointee == "@") {
|
||||
return pointee;
|
||||
}
|
||||
|
||||
return concatenate_strings(temporary_allocator(), str_lit("^"), pointee);
|
||||
}
|
||||
|
||||
case Type_MultiPointer:
|
||||
return concatenate_strings(temporary_allocator(), str_lit("^"), lb_get_objc_type_encoding(t->Pointer.elem, pointer_depth +1));
|
||||
|
||||
case Type_Array: {
|
||||
String type_str = lb_get_objc_type_encoding(t->Array.elem, pointer_depth);
|
||||
|
||||
gbString s = gb_string_make_reserve(temporary_allocator(), type_str.len + 8);
|
||||
s = gb_string_append_fmt(s, "[%lld%.*s]", t->Array.count, LIT(type_str));
|
||||
return make_string_c(s);
|
||||
}
|
||||
|
||||
case Type_EnumeratedArray: {
|
||||
String type_str = lb_get_objc_type_encoding(t->EnumeratedArray.elem, pointer_depth);
|
||||
|
||||
gbString s = gb_string_make_reserve(temporary_allocator(), type_str.len + 8);
|
||||
s = gb_string_append_fmt(s, "[%lld%.*s]", t->EnumeratedArray.count, LIT(type_str));
|
||||
return make_string_c(s);
|
||||
}
|
||||
|
||||
case Type_Slice: {
|
||||
String type_str = lb_get_objc_type_encoding(t->Slice.elem, pointer_depth);
|
||||
gbString s = gb_string_make_reserve(temporary_allocator(), type_str.len + 8);
|
||||
s = gb_string_append_fmt(s, "{slice=^%.*s%s}", LIT(type_str), INT_SIZE_ENCODING);
|
||||
return make_string_c(s);
|
||||
}
|
||||
|
||||
case Type_DynamicArray: {
|
||||
String type_str = lb_get_objc_type_encoding(t->DynamicArray.elem, pointer_depth);
|
||||
gbString s = gb_string_make_reserve(temporary_allocator(), type_str.len + 8);
|
||||
s = gb_string_append_fmt(s, "{dynamic=^%.*s%s%sAllocator={?^v}}", LIT(type_str), INT_SIZE_ENCODING, INT_SIZE_ENCODING);
|
||||
return make_string_c(s);
|
||||
}
|
||||
|
||||
case Type_Map:
|
||||
return str_lit("{^v^v{Allocator=?^v}}");
|
||||
case Type_Enum:
|
||||
return lb_get_objc_type_encoding(t->Enum.base_type, pointer_depth);
|
||||
case Type_Tuple:
|
||||
// NOTE(harold): Is this type allowed here?
|
||||
return str_lit("?");
|
||||
case Type_Proc:
|
||||
return str_lit("?");
|
||||
case Type_BitSet:
|
||||
return lb_get_objc_type_encoding(t->BitSet.underlying, pointer_depth);
|
||||
|
||||
case Type_SimdVector: {
|
||||
String type_str = lb_get_objc_type_encoding(t->SimdVector.elem, pointer_depth);
|
||||
gbString s = gb_string_make_reserve(temporary_allocator(), type_str.len + 5);
|
||||
gb_string_append_fmt(s, "[%lld%.*s]", t->SimdVector.count, LIT(type_str));
|
||||
return make_string_c(s);
|
||||
}
|
||||
|
||||
case Type_Matrix: {
|
||||
String type_str = lb_get_objc_type_encoding(t->Matrix.elem, pointer_depth);
|
||||
gbString s = gb_string_make_reserve(temporary_allocator(), type_str.len + 5);
|
||||
i64 element_count = t->Matrix.column_count * t->Matrix.row_count;
|
||||
gb_string_append_fmt(s, "[%lld%.*s]", element_count, LIT(type_str));
|
||||
return make_string_c(s);
|
||||
}
|
||||
|
||||
case Type_BitField:
|
||||
return lb_get_objc_type_encoding(t->BitField.backing_type, pointer_depth);
|
||||
case Type_SoaPointer: {
|
||||
gbString s = gb_string_make_reserve(temporary_allocator(), 8);
|
||||
s = gb_string_append_fmt(s, "{=^v%s}", INT_SIZE_ENCODING);
|
||||
return make_string_c(s);
|
||||
}
|
||||
|
||||
} // End switch t->kind
|
||||
#undef INT_SIZE_ENCODING
|
||||
|
||||
GB_PANIC("Unreachable");
|
||||
return str_lit("");
|
||||
}
|
||||
|
||||
struct lbObjCGlobalClass {
|
||||
lbObjCGlobal g;
|
||||
lbValue class_value; // Local registered class value
|
||||
};
|
||||
|
||||
gb_internal void lb_register_objc_thing(
|
||||
StringSet &handled,
|
||||
lbModule *m,
|
||||
Array<lbValue> &args,
|
||||
Array<lbObjCGlobalClass> &class_impls,
|
||||
StringMap<lbObjCGlobalClass> &class_map,
|
||||
lbProcedure *p,
|
||||
lbObjCGlobal const &g,
|
||||
char const *call
|
||||
) {
|
||||
if (string_set_update(&handled, g.name)) {
|
||||
return;
|
||||
}
|
||||
|
||||
lbAddr addr = {};
|
||||
lbValue *found = string_map_get(&m->members, g.global_name);
|
||||
if (found) {
|
||||
addr = lb_addr(*found);
|
||||
} else {
|
||||
lbValue v = {};
|
||||
LLVMTypeRef t = lb_type(m, g.type);
|
||||
v.value = LLVMAddGlobal(m->mod, t, g.global_name);
|
||||
v.type = alloc_type_pointer(g.type);
|
||||
addr = lb_addr(v);
|
||||
LLVMSetInitializer(v.value, LLVMConstNull(t));
|
||||
}
|
||||
|
||||
lbValue class_ptr = {};
|
||||
lbValue class_name = lb_const_value(m, t_cstring, exact_value_string(g.name));
|
||||
|
||||
// If this class requires an implementation, save it for registration below.
|
||||
if (g.class_impl_type != nullptr) {
|
||||
|
||||
// Make sure the superclass has been initialized before us
|
||||
lbValue superclass_value = lb_const_nil(m, t_objc_Class);
|
||||
|
||||
auto &tn = g.class_impl_type->Named.type_name->TypeName;
|
||||
Type *superclass = tn.objc_superclass;
|
||||
if (superclass != nullptr) {
|
||||
auto& superclass_global = string_map_must_get(&class_map, superclass->Named.type_name->TypeName.objc_class_name);
|
||||
lb_register_objc_thing(handled, m, args, class_impls, class_map, p, superclass_global.g, call);
|
||||
GB_ASSERT(superclass_global.class_value.value);
|
||||
|
||||
superclass_value = superclass_global.class_value;
|
||||
}
|
||||
|
||||
args.count = 3;
|
||||
args[0] = superclass_value;
|
||||
args[1] = class_name;
|
||||
args[2] = lb_const_int(m, t_uint, 0);
|
||||
class_ptr = lb_emit_runtime_call(p, "objc_allocateClassPair", args);
|
||||
|
||||
array_add(&class_impls, lbObjCGlobalClass{g, class_ptr});
|
||||
}
|
||||
else {
|
||||
args.count = 1;
|
||||
args[0] = class_name;
|
||||
class_ptr = lb_emit_runtime_call(p, call, args);
|
||||
}
|
||||
|
||||
lb_addr_store(p, addr, class_ptr);
|
||||
|
||||
lbObjCGlobalClass* class_global = string_map_get(&class_map, g.name);
|
||||
if (class_global != nullptr) {
|
||||
class_global->class_value = class_ptr;
|
||||
}
|
||||
}
|
||||
|
||||
gb_internal void lb_finalize_objc_names(lbGenerator *gen, lbProcedure *p) {
|
||||
if (p == nullptr) {
|
||||
return;
|
||||
@@ -1186,38 +1524,329 @@ gb_internal void lb_finalize_objc_names(lbGenerator *gen, lbProcedure *p) {
|
||||
string_set_init(&handled);
|
||||
defer (string_set_destroy(&handled));
|
||||
|
||||
auto args = array_make<lbValue>(temporary_allocator(), 1);
|
||||
auto args = array_make<lbValue>(temporary_allocator(), 3, 8);
|
||||
auto class_impls = array_make<lbObjCGlobalClass>(temporary_allocator(), 0, 16);
|
||||
|
||||
// Register all class implementations unconditionally, even if not statically referenced
|
||||
for (Entity *e = {}; mpsc_dequeue(&gen->info->objc_class_implementations, &e); /**/) {
|
||||
GB_ASSERT(e->kind == Entity_TypeName && e->TypeName.objc_is_implementation);
|
||||
lb_handle_objc_find_or_register_class(p, e->TypeName.objc_class_name, e->type);
|
||||
}
|
||||
|
||||
// Ensure classes that have been implicitly referenced through
|
||||
// the objc_superclass attribute have a global variable available for them.
|
||||
TypeSet class_set{};
|
||||
type_set_init(&class_set, gen->objc_classes.count+16);
|
||||
defer (type_set_destroy(&class_set));
|
||||
|
||||
auto referenced_classes = array_make<lbObjCGlobal>(temporary_allocator());
|
||||
for (lbObjCGlobal g = {}; mpsc_dequeue(&gen->objc_classes, &g); /**/) {
|
||||
array_add(&referenced_classes, g);
|
||||
|
||||
Type *cls = g.class_impl_type;
|
||||
while (cls) {
|
||||
if (type_set_update(&class_set, cls)) {
|
||||
break;
|
||||
}
|
||||
GB_ASSERT(cls->kind == Type_Named);
|
||||
|
||||
cls = cls->Named.type_name->TypeName.objc_superclass;
|
||||
}
|
||||
}
|
||||
|
||||
for (auto pair : class_set) {
|
||||
auto& tn = pair.type->Named.type_name->TypeName;
|
||||
Type *class_impl = !tn.objc_is_implementation ? nullptr : pair.type;
|
||||
lb_handle_objc_find_or_register_class(p, tn.objc_class_name, class_impl);
|
||||
}
|
||||
for (lbObjCGlobal g = {}; mpsc_dequeue(&gen->objc_classes, &g); /**/) {
|
||||
array_add( &referenced_classes, g );
|
||||
}
|
||||
|
||||
// Add all class globals to a map so that we can look them up dynamically
|
||||
// in order to resolve out-of-order because classes that are being implemented
|
||||
// require their superclasses to be registered before them.
|
||||
StringMap<lbObjCGlobalClass> global_class_map{};
|
||||
string_map_init(&global_class_map, (usize)gen->objc_classes.count);
|
||||
defer (string_map_destroy(&global_class_map));
|
||||
|
||||
for (lbObjCGlobal g :referenced_classes) {
|
||||
string_map_set(&global_class_map, g.name, lbObjCGlobalClass{g});
|
||||
}
|
||||
|
||||
LLVMSetLinkage(p->value, LLVMInternalLinkage);
|
||||
lb_begin_procedure_body(p);
|
||||
|
||||
auto register_thing = [&handled, &m, &args](lbProcedure *p, lbObjCGlobal const &g, char const *call) {
|
||||
if (!string_set_update(&handled, g.name)) {
|
||||
lbAddr addr = {};
|
||||
lbValue *found = string_map_get(&m->members, g.global_name);
|
||||
if (found) {
|
||||
addr = lb_addr(*found);
|
||||
} else {
|
||||
lbValue v = {};
|
||||
LLVMTypeRef t = lb_type(m, g.type);
|
||||
v.value = LLVMAddGlobal(m->mod, t, g.global_name);
|
||||
v.type = alloc_type_pointer(g.type);
|
||||
addr = lb_addr(v);
|
||||
LLVMSetInitializer(v.value, LLVMConstNull(t));
|
||||
}
|
||||
|
||||
args[0] = lb_const_value(m, t_cstring, exact_value_string(g.name));
|
||||
lbValue ptr = lb_emit_runtime_call(p, call, args);
|
||||
lb_addr_store(p, addr, ptr);
|
||||
}
|
||||
};
|
||||
|
||||
for (lbObjCGlobal g = {}; mpsc_dequeue(&gen->objc_classes, &g); /**/) {
|
||||
register_thing(p, g, "objc_lookUpClass");
|
||||
// Register class globals, gathering classes that must be implemented
|
||||
for (auto& kv : global_class_map) {
|
||||
lb_register_objc_thing(handled, m, args, class_impls, global_class_map, p, kv.value.g, "objc_lookUpClass");
|
||||
}
|
||||
|
||||
// Prefetch selectors for implemented methods so that they can also be registered.
|
||||
for (const auto& cd : class_impls) {
|
||||
auto& g = cd.g;
|
||||
Type *class_type = g.class_impl_type;
|
||||
|
||||
Array<ObjcMethodData>* methods = map_get(&m->info->objc_method_implementations, class_type);
|
||||
if (!methods) {
|
||||
continue;
|
||||
}
|
||||
|
||||
for (const ObjcMethodData& md : *methods) {
|
||||
lb_handle_objc_find_or_register_selector(p, md.ac.objc_selector);
|
||||
}
|
||||
}
|
||||
|
||||
// Now we can register all referenced selectors
|
||||
for (lbObjCGlobal g = {}; mpsc_dequeue(&gen->objc_selectors, &g); /**/) {
|
||||
register_thing(p, g, "sel_registerName");
|
||||
lb_register_objc_thing(handled, m, args, class_impls, global_class_map, p, g, "sel_registerName");
|
||||
}
|
||||
|
||||
|
||||
// Emit method wrapper implementations and registration
|
||||
auto wrapper_args = array_make<Type *>(temporary_allocator(), 2, 8);
|
||||
auto get_context_args = array_make<lbValue>(temporary_allocator(), 1);
|
||||
|
||||
|
||||
PtrMap<Type *, lbObjCGlobal> ivar_map{};
|
||||
map_init(&ivar_map, gen->objc_ivars.count);
|
||||
|
||||
for (lbObjCGlobal g = {}; mpsc_dequeue(&gen->objc_ivars, &g); /**/) {
|
||||
map_set(&ivar_map, g.class_impl_type, g);
|
||||
}
|
||||
|
||||
for (const auto &cd : class_impls) {
|
||||
auto &g = cd.g;
|
||||
Type *class_type = g.class_impl_type;
|
||||
Type *class_ptr_type = alloc_type_pointer(class_type);
|
||||
lbValue class_value = cd.class_value;
|
||||
|
||||
Type *ivar_type = class_type->Named.type_name->TypeName.objc_ivar;
|
||||
|
||||
Entity *context_provider = class_type->Named.type_name->TypeName.objc_context_provider;
|
||||
Type *contex_provider_self_ptr_type = nullptr;
|
||||
Type *contex_provider_self_named_type = nullptr;
|
||||
bool is_context_provider_ivar = false;
|
||||
lbValue context_provider_proc_value{};
|
||||
|
||||
if (context_provider) {
|
||||
context_provider_proc_value = lb_find_procedure_value_from_entity(m, context_provider);
|
||||
|
||||
contex_provider_self_ptr_type = base_type(context_provider->type->Proc.params->Tuple.variables[0]->type);
|
||||
GB_ASSERT(contex_provider_self_ptr_type->kind == Type_Pointer);
|
||||
contex_provider_self_named_type = base_named_type(type_deref(contex_provider_self_ptr_type));
|
||||
|
||||
is_context_provider_ivar = ivar_type != nullptr && internal_check_is_assignable_to(contex_provider_self_named_type, ivar_type);
|
||||
}
|
||||
|
||||
|
||||
Array<ObjcMethodData> *methods = map_get(&m->info->objc_method_implementations, class_type);
|
||||
if (!methods) {
|
||||
continue;
|
||||
}
|
||||
|
||||
for (const ObjcMethodData &md : *methods) {
|
||||
GB_ASSERT( md.proc_entity->kind == Entity_Procedure);
|
||||
Type *method_type = md.proc_entity->type;
|
||||
|
||||
String proc_name = make_string_c("__$objc_method::");
|
||||
proc_name = concatenate_strings(temporary_allocator(), proc_name, g.name);
|
||||
proc_name = concatenate_strings(temporary_allocator(), proc_name, str_lit("::"));
|
||||
proc_name = concatenate_strings( permanent_allocator(), proc_name, md.ac.objc_name);
|
||||
|
||||
wrapper_args.count = 2;
|
||||
wrapper_args[0] = md.ac.objc_is_class_method ? t_objc_Class : class_ptr_type;
|
||||
wrapper_args[1] = t_objc_SEL;
|
||||
|
||||
isize method_param_count = method_type->Proc.param_count;
|
||||
isize method_param_offset = 0;
|
||||
|
||||
if (!md.ac.objc_is_class_method) {
|
||||
GB_ASSERT(method_param_count >= 1);
|
||||
method_param_count -= 1;
|
||||
method_param_offset = 1;
|
||||
}
|
||||
|
||||
for (isize i = 0; i < method_param_count; i++) {
|
||||
array_add(&wrapper_args, method_type->Proc.params->Tuple.variables[method_param_offset+i]->type);
|
||||
}
|
||||
|
||||
Type *wrapper_args_tuple = alloc_type_tuple_from_field_types(wrapper_args.data, wrapper_args.count, false, true);
|
||||
Type *wrapper_results_tuple = nullptr;
|
||||
|
||||
if (method_type->Proc.result_count > 0) {
|
||||
GB_ASSERT(method_type->Proc.result_count == 1);
|
||||
wrapper_results_tuple = alloc_type_tuple_from_field_types(&method_type->Proc.results->Tuple.variables[0]->type, 1, false, true);
|
||||
}
|
||||
|
||||
Type *wrapper_proc_type = alloc_type_proc(nullptr, wrapper_args_tuple, wrapper_args_tuple->Tuple.variables.count,
|
||||
wrapper_results_tuple, method_type->Proc.result_count, false, ProcCC_CDecl);
|
||||
|
||||
lbProcedure *wrapper_proc = lb_create_dummy_procedure(m, proc_name, wrapper_proc_type);
|
||||
lb_add_attribute_to_proc(wrapper_proc->module, wrapper_proc->value, "nounwind");
|
||||
|
||||
// Emit the wrapper
|
||||
LLVMSetLinkage(wrapper_proc->value, LLVMExternalLinkage);
|
||||
lb_begin_procedure_body(wrapper_proc);
|
||||
{
|
||||
if (method_type->Proc.calling_convention == ProcCC_Odin) {
|
||||
GB_ASSERT(context_provider);
|
||||
|
||||
// Emit the get odin context call
|
||||
|
||||
get_context_args[0] = lbValue {
|
||||
wrapper_proc->raw_input_parameters[0],
|
||||
contex_provider_self_ptr_type,
|
||||
};
|
||||
|
||||
if (is_context_provider_ivar) {
|
||||
// The context provider takes the ivar's type.
|
||||
// Emit an objc_ivar_get call and use that pointer for 'self' instead.
|
||||
lbValue real_self {
|
||||
wrapper_proc->raw_input_parameters[0],
|
||||
class_ptr_type
|
||||
};
|
||||
get_context_args[0] = lb_handle_objc_ivar_for_objc_object_pointer(wrapper_proc, real_self);
|
||||
}
|
||||
|
||||
lbValue context = lb_emit_call(wrapper_proc, context_provider_proc_value, get_context_args);
|
||||
lbAddr context_addr = lb_addr(lb_address_from_load_or_generate_local(wrapper_proc, context));
|
||||
lb_push_context_onto_stack(wrapper_proc, context_addr);
|
||||
}
|
||||
|
||||
|
||||
auto method_call_args = array_make<lbValue>(temporary_allocator(), method_param_count + method_param_offset);
|
||||
|
||||
if (!md.ac.objc_is_class_method) {
|
||||
method_call_args[0] = lbValue {
|
||||
wrapper_proc->raw_input_parameters[0],
|
||||
class_ptr_type,
|
||||
};
|
||||
}
|
||||
|
||||
for (isize i = 0; i < method_param_count; i++) {
|
||||
method_call_args[i+method_param_offset] = lbValue {
|
||||
wrapper_proc->raw_input_parameters[i+2],
|
||||
method_type->Proc.params->Tuple.variables[i+method_param_offset]->type,
|
||||
};
|
||||
}
|
||||
lbValue method_proc_value = lb_find_procedure_value_from_entity(m, md.proc_entity);
|
||||
|
||||
// Call real procedure for method from here, passing the parameters expected, if any.
|
||||
lbValue return_value = lb_emit_call(wrapper_proc, method_proc_value, method_call_args);
|
||||
|
||||
if (wrapper_results_tuple != nullptr) {
|
||||
auto &result_var = method_type->Proc.results->Tuple.variables[0];
|
||||
return_value = lb_emit_conv(wrapper_proc, return_value, result_var->type);
|
||||
lb_build_return_stmt_internal(wrapper_proc, return_value, result_var->token.pos);
|
||||
}
|
||||
}
|
||||
lb_end_procedure_body(wrapper_proc);
|
||||
|
||||
|
||||
// Add the method to the class
|
||||
String method_encoding = str_lit("v");
|
||||
// TODO (harold): Checker must ensure that objc_methods have a single return value or none!
|
||||
GB_ASSERT(method_type->Proc.result_count <= 1);
|
||||
if (method_type->Proc.result_count != 0) {
|
||||
method_encoding = lb_get_objc_type_encoding(method_type->Proc.results->Tuple.variables[0]->type);
|
||||
}
|
||||
|
||||
if (!md.ac.objc_is_class_method) {
|
||||
method_encoding = concatenate_strings(temporary_allocator(), method_encoding, str_lit("@:"));
|
||||
} else {
|
||||
method_encoding = concatenate_strings(temporary_allocator(), method_encoding, str_lit("#:"));
|
||||
}
|
||||
|
||||
for (isize i = method_param_offset; i < method_param_count; i++) {
|
||||
Type *param_type = method_type->Proc.params->Tuple.variables[i]->type;
|
||||
String param_encoding = lb_get_objc_type_encoding(param_type);
|
||||
|
||||
method_encoding = concatenate_strings(temporary_allocator(), method_encoding, param_encoding);
|
||||
}
|
||||
|
||||
// Emit method registration
|
||||
lbAddr* sel_address = string_map_get(&m->objc_selectors, md.ac.objc_selector);
|
||||
GB_ASSERT(sel_address);
|
||||
lbValue selector_value = lb_addr_load(p, *sel_address);
|
||||
|
||||
args.count = 4;
|
||||
args[0] = class_value; // Class
|
||||
args[1] = selector_value; // SEL
|
||||
args[2] = lbValue { wrapper_proc->value, wrapper_proc->type };
|
||||
args[3] = lb_const_value(m, t_cstring, exact_value_string(method_encoding));
|
||||
|
||||
// TODO(harold): Emit check BOOL result and panic if false.
|
||||
lb_emit_runtime_call(p, "class_addMethod", args);
|
||||
|
||||
} // End methods
|
||||
|
||||
// Add ivar if we have one
|
||||
if (ivar_type != nullptr) {
|
||||
// Register a single ivar for this class
|
||||
Type *ivar_base = ivar_type->Named.base;
|
||||
|
||||
// @note(harold): The alignment is supposed to be passed as log2(alignment): https://developer.apple.com/documentation/objectivec/class_addivar(_:_:_:_:_:)?language=objc
|
||||
const i64 size = type_size_of(ivar_base);
|
||||
const i64 alignment = (i64)floor_log2((u64)type_align_of(ivar_base));
|
||||
|
||||
// NOTE(harold): I've opted to not emit the type encoding for ivars in order to keep the data private.
|
||||
// If there is desire in the future to emit the type encoding for introspection through the Obj-C runtime,
|
||||
// then perhaps an option can be added for it then.
|
||||
// Should we pass the actual type encoding? Might not be ideal for obfuscation.
|
||||
String ivar_name = str_lit("__$ivar");
|
||||
String ivar_types = str_lit("{= }"); //lb_get_objc_type_encoding(ivar_type);
|
||||
args.count = 5;
|
||||
args[0] = class_value;
|
||||
args[1] = lb_const_value(m, t_cstring, exact_value_string(ivar_name));
|
||||
args[2] = lb_const_value(m, t_uint, exact_value_u64((u64)size));
|
||||
args[3] = lb_const_value(m, t_u8, exact_value_u64((u64)alignment));
|
||||
args[4] = lb_const_value(m, t_cstring, exact_value_string(ivar_types));
|
||||
lb_emit_runtime_call(p, "class_addIvar", args);
|
||||
}
|
||||
|
||||
// Complete the class registration
|
||||
args.count = 1;
|
||||
args[0] = class_value;
|
||||
lb_emit_runtime_call(p, "objc_registerClassPair", args);
|
||||
}
|
||||
|
||||
// Register ivar offsets for any `objc_ivar_get` expressions emitted.
|
||||
for (auto const& kv : ivar_map) {
|
||||
lbObjCGlobal const& g = kv.value;
|
||||
lbAddr ivar_addr = {};
|
||||
lbValue *found = string_map_get(&m->members, g.global_name);
|
||||
|
||||
if (found) {
|
||||
ivar_addr = lb_addr(*found);
|
||||
GB_ASSERT(ivar_addr.addr.type == t_int_ptr);
|
||||
} else {
|
||||
// Defined in an external package, define it now in the main package
|
||||
LLVMTypeRef t = lb_type(m, t_int);
|
||||
|
||||
lbValue global{};
|
||||
global.value = LLVMAddGlobal(m->mod, t, g.global_name);
|
||||
global.type = t_int_ptr;
|
||||
|
||||
LLVMSetInitializer(global.value, LLVMConstInt(t, 0, true));
|
||||
|
||||
ivar_addr = lb_addr(global);
|
||||
}
|
||||
|
||||
String class_name = g.class_impl_type->Named.type_name->TypeName.objc_class_name;
|
||||
lbValue class_value = string_map_must_get(&global_class_map, class_name).class_value;
|
||||
|
||||
args.count = 2;
|
||||
args[0] = class_value;
|
||||
args[1] = lb_const_value(m, t_cstring, exact_value_string(str_lit("__$ivar")));
|
||||
lbValue ivar = lb_emit_runtime_call(p, "class_getInstanceVariable", args);
|
||||
|
||||
args.count = 1;
|
||||
args[0] = ivar;
|
||||
lbValue ivar_offset = lb_emit_runtime_call(p, "ivar_getOffset", args);
|
||||
lbValue ivar_offset_int = lb_emit_conv(p, ivar_offset, t_int);
|
||||
|
||||
lb_addr_store(p, ivar_addr, ivar_offset_int);
|
||||
}
|
||||
|
||||
lb_end_procedure_body(p);
|
||||
|
||||
Reference in New Issue
Block a user