75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
#include "master.hpp"
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namespace factor {
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// Allocates memory
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byte_array* factor_vm::allot_byte_array(cell size) {
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byte_array* array = allot_uninitialized_array<byte_array>(size);
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memset(array + 1, 0, size);
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return array;
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}
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// Allocates memory
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void factor_vm::primitive_byte_array() {
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cell size = unbox_array_size();
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ctx->push(tag<byte_array>(allot_byte_array(size)));
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}
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// Allocates memory
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void factor_vm::primitive_uninitialized_byte_array() {
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cell size = unbox_array_size();
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ctx->push(tag<byte_array>(allot_uninitialized_array<byte_array>(size)));
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}
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// Allocates memory
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void factor_vm::primitive_resize_byte_array() {
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data_root<byte_array> array(ctx->pop(), this);
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check_tagged(array);
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cell capacity = unbox_array_size();
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ctx->push(tag<byte_array>(reallot_array(array.untagged(), capacity)));
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}
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// Allocates memory
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void growable_byte_array::reallot_array(cell count) {
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byte_array *ba_old = elements.untagged();
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byte_array *ba_new = elements.parent->reallot_array(ba_old, count);
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elements.set_untagged(ba_new);
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}
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// Allocates memory
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void growable_byte_array::grow_bytes(cell len) {
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count += len;
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if (count >= array_capacity(elements.untagged())) {
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reallot_array(2 * count);
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}
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}
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// Allocates memory
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void growable_byte_array::append_bytes(void* elts, cell len) {
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cell old_count = count;
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grow_bytes(len);
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memcpy(&elements->data<uint8_t>()[old_count], elts, len);
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}
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// Allocates memory
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void growable_byte_array::append_byte_array(cell byte_array_) {
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data_root<byte_array> byte_array(byte_array_, elements.parent);
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cell len = array_capacity(byte_array.untagged());
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cell new_size = count + len;
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if (new_size >= array_capacity(elements.untagged())) {
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reallot_array(2 * new_size);
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}
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memcpy(&elements->data<uint8_t>()[count], byte_array->data<uint8_t>(), len);
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count += len;
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}
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// Allocates memory
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void growable_byte_array::trim() {
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reallot_array(count);
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}
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}
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