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Type erasure to minimize code generation size

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This commit is contained in:
gingerBill
2025-09-18 15:54:05 +01:00
parent 0f307fbc5d
commit 3954491393
1 changed files with 21 additions and 14 deletions
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35
base/runtime/core_builtin.odin
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@@ -334,20 +334,19 @@ delete :: proc{
// The new built-in procedure allocates memory. The first argument is a type, not a value, and the value
// return is a pointer to a newly allocated value of that type using the specified allocator, default is context.allocator
@(builtin, require_results)
new :: proc($T: typeid, allocator := context.allocator, loc := #caller_location) -> (^T, Allocator_Error) #optional_allocator_error {
return new_aligned(T, align_of(T), allocator, loc)
new :: proc($T: typeid, allocator := context.allocator, loc := #caller_location) -> (t: ^T, err: Allocator_Error) #optional_allocator_error {
t = (^T)(raw_data(mem_alloc_bytes(size_of(T), align_of(T), allocator, loc) or_return))
return
}
@(require_results)
new_aligned :: proc($T: typeid, alignment: int, allocator := context.allocator, loc := #caller_location) -> (t: ^T, err: Allocator_Error) {
data := mem_alloc_bytes(size_of(T), alignment, allocator, loc) or_return
t = (^T)(raw_data(data))
t = (^T)(raw_data(mem_alloc_bytes(size_of(T), alignment, allocator, loc) or_return))
return
}
@(builtin, require_results)
new_clone :: proc(data: $T, allocator := context.allocator, loc := #caller_location) -> (t: ^T, err: Allocator_Error) #optional_allocator_error {
t_data := mem_alloc_bytes(size_of(T), align_of(T), allocator, loc) or_return
t = (^T)(raw_data(t_data))
t = (^T)(raw_data(mem_alloc_bytes(size_of(T), align_of(T), allocator, loc) or_return))
if t != nil {
t^ = data
}
@@ -357,14 +356,21 @@ new_clone :: proc(data: $T, allocator := context.allocator, loc := #caller_locat
DEFAULT_DYNAMIC_ARRAY_CAPACITY :: 8
@(require_results)
make_aligned :: proc($T: typeid/[]$E, #any_int len: int, alignment: int, allocator := context.allocator, loc := #caller_location) -> (T, Allocator_Error) #optional_allocator_error {
make_aligned :: proc($T: typeid/[]$E, #any_int len: int, alignment: int, allocator := context.allocator, loc := #caller_location) -> (res: T, err: Allocator_Error) #optional_allocator_error {
err = _make_aligned_type_erased(&res, size_of(E), len, alignment, allocator, loc)
return
}
@(require_results)
_make_aligned_type_erased :: proc(slice: rawptr, elem_size: int, len: int, alignment: int, allocator: Allocator, loc := #caller_location) -> Allocator_Error {
make_slice_error_loc(loc, len)
data, err := mem_alloc_bytes(size_of(E)*len, alignment, allocator, loc)
if data == nil && size_of(E) != 0 {
return nil, err
data, err := mem_alloc_bytes(elem_size*len, alignment, allocator, loc)
if data == nil && elem_size != 0 {
return err
}
s := Raw_Slice{raw_data(data), len}
return transmute(T)s, err
(^Raw_Slice)(slice).data = raw_data(data)
(^Raw_Slice)(slice).len = len
return err
}
// `make_slice` allocates and initializes a slice. Like `new`, the first argument is a type, not a value.
@@ -372,8 +378,9 @@ make_aligned :: proc($T: typeid/[]$E, #any_int len: int, alignment: int, allocat
//
// Note: Prefer using the procedure group `make`.
@(builtin, require_results)
make_slice :: proc($T: typeid/[]$E, #any_int len: int, allocator := context.allocator, loc := #caller_location) -> (T, Allocator_Error) #optional_allocator_error {
return make_aligned(T, len, align_of(E), allocator, loc)
make_slice :: proc($T: typeid/[]$E, #any_int len: int, allocator := context.allocator, loc := #caller_location) -> (res: T, err: Allocator_Error) #optional_allocator_error {
err = _make_aligned_type_erased(&res, size_of(E), len, align_of(E), allocator, loc)
return
}
// `make_dynamic_array` allocates and initializes a dynamic array. Like `new`, the first argument is a type, not a value.
// Unlike `new`, `make`'s return value is the same as the type of its argument, not a pointer to it.