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[dynamic; N]T proof of concept: fixed capacity dynamic array (akin to small_array.Small_Array(N, T))

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gingerBill
2026-03-11 16:46:33 +00:00
parent 143a8762a0
commit f1dbe9c242
25 changed files with 677 additions and 61 deletions
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44
src/llvm_backend_expr.cpp
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@@ -4700,6 +4700,25 @@ gb_internal lbAddr lb_build_addr_index_expr(lbProcedure *p, Ast *expr) {
return lb_addr(elem);
}
case Type_FixedCapacityDynamicArray: {
lbValue array = {};
array = lb_build_addr_ptr(p, ie->expr);
if (deref) {
array = lb_emit_load(p, array);
}
lbValue index = lb_build_expr(p, ie->index);
index = lb_emit_conv(p, index, t_int);
lbValue array_ptr = lb_emit_struct_ep(p, array, 0);
lbValue elem = lb_emit_array_ep(p, array_ptr, index);
auto index_tv = type_and_value_of_expr(ie->index);
lbValue len = lb_emit_struct_ep(p, array, 1);
len = lb_emit_load(p, len);
lb_emit_bounds_check(p, ast_token(ie->index), index, len);
return lb_addr(elem);
}
case Type_EnumeratedArray: {
lbValue array = {};
array = lb_build_addr_ptr(p, ie->expr);
@@ -4943,6 +4962,31 @@ gb_internal lbAddr lb_build_addr_slice_expr(lbProcedure *p, Ast *expr) {
return slice;
}
case Type_FixedCapacityDynamicArray: {
Type *elem_type = type->FixedCapacityDynamicArray.elem;
Type *slice_type = alloc_type_slice(elem_type);
lbValue len = lb_fixed_capacity_dynamic_array_len(p, base);
if (high.value == nullptr) high = len;
bool low_const = type_and_value_of_expr(se->low).mode == Addressing_Constant;
bool high_const = type_and_value_of_expr(se->high).mode == Addressing_Constant;
if (!low_const || !high_const) {
if (!no_indices) {
lb_emit_slice_bounds_check(p, se->open, low, high, len, se->low != nullptr);
}
}
lbValue data_ptr = lb_addr_get_ptr(p, addr);
lbValue array_ptr = lb_emit_struct_ep(p, data_ptr, 0);
lbValue elem = lb_emit_ptr_offset(p, lb_array_elem(p, array_ptr), low);
lbValue new_len = lb_emit_arith(p, Token_Sub, high, low, t_int);
lbAddr slice = lb_add_local_generated(p, slice_type, false);
lb_fill_slice(p, slice, elem, new_len);
return slice;
}
case Type_Basic: {
if (is_type_string16(type)) {
GB_ASSERT_MSG(are_types_identical(type, t_string16), "got %s", type_to_string(type));