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buffer.c
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buffer.c
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "ant.h"
#include "ptr.h"
#include "utf8.h"
#include "utils.h"
#include "errors.h"
#include "base64.h"
#include "internal.h"
#include "runtime.h"
#include "gc/roots.h"
#include "descriptors.h"
#include "silver/engine.h"
#include "modules/bigint.h"
#include "modules/buffer.h"
#include "modules/symbol.h"
#define BUFFER_REGISTRY_INITIAL_CAP 64
// Node compatibility exports only
// Ant does not enforce these as allocation limits
#define BUFFER_COMPAT_MAX_LENGTH 4294967296.0
#define BUFFER_COMPAT_MAX_STRING_LENGTH 536870888.0
#define BUFFER_COMPAT_INSPECT_MAX_BYTES 50.0
static size_t ta_metadata_bytes = 0;
static size_t buffer_registry_count = 0;
static size_t buffer_registry_cap = 0;
static ArrayBufferData **buffer_registry = NULL;
static ant_value_t g_typedarray_iter_proto = 0;
enum {
BUFFER_ARRAYBUFFER_NATIVE_TAG = 0x41425546u, // ABUF
BUFFER_TYPEDARRAY_NATIVE_TAG = 0x54594152u, // TYAR
BUFFER_DATAVIEW_NATIVE_TAG = 0x44564957u, // DVIW
};
static void *ta_meta_alloc(size_t size) {
void *ptr = ant_calloc(size);
if (!ptr) return NULL;
ta_metadata_bytes += size;
return ptr;
}
static void ta_meta_free(void *ptr, size_t size) {
if (!ptr) return;
if (ta_metadata_bytes >= size) ta_metadata_bytes -= size;
else ta_metadata_bytes = 0;
free(ptr);
}
ArrayBufferData *buffer_get_arraybuffer_data(ant_value_t value) {
if (!is_object_type(value) || buffer_is_dataview(value)) return NULL;
if (js_check_native_tag(value, BUFFER_ARRAYBUFFER_NATIVE_TAG))
return (ArrayBufferData *)js_get_native_ptr(value);
return NULL;
}
TypedArrayData *buffer_get_typedarray_data(ant_value_t value) {
if (vtype(value) == T_TYPEDARRAY)
return (TypedArrayData *)js_gettypedarray(value);
if (!is_object_type(value)) return NULL;
if (js_check_native_tag(value, BUFFER_TYPEDARRAY_NATIVE_TAG))
return (TypedArrayData *)js_get_native_ptr(value);
return NULL;
}
DataViewData *buffer_get_dataview_data(ant_value_t value) {
if (!is_object_type(value)) return NULL;
if (js_check_native_tag(value, BUFFER_DATAVIEW_NATIVE_TAG))
return (DataViewData *)js_get_native_ptr(value);
return NULL;
}
static void arraybuffer_finalize(ant_t *js, ant_object_t *obj) {
ant_value_t value = js_obj_from_ptr(obj);
if (!js_check_native_tag(value, BUFFER_ARRAYBUFFER_NATIVE_TAG)) return;
ArrayBufferData *data = (ArrayBufferData *)js_get_native_ptr(value);
js_set_native_ptr(value, NULL);
js_set_native_tag(value, 0);
if (data) free_array_buffer_data(data);
}
static void typedarray_finalize(ant_t *js, ant_object_t *obj) {
ant_value_t value = js_obj_from_ptr(obj);
if (!js_check_native_tag(value, BUFFER_TYPEDARRAY_NATIVE_TAG)) return;
TypedArrayData *ta_data = (TypedArrayData *)js_get_native_ptr(value);
js_set_native_ptr(value, NULL);
js_set_native_tag(value, 0);
if (!ta_data) return;
if (ta_data->buffer) free_array_buffer_data(ta_data->buffer);
ta_meta_free(ta_data, sizeof(*ta_data));
}
static void dataview_finalize(ant_t *js, ant_object_t *obj) {
ant_value_t value = js_obj_from_ptr(obj);
if (!js_check_native_tag(value, BUFFER_DATAVIEW_NATIVE_TAG)) return;
DataViewData *dv_data = (DataViewData *)js_get_native_ptr(value);
js_set_native_ptr(value, NULL);
js_set_native_tag(value, 0);
if (!dv_data) return;
if (dv_data->buffer) free_array_buffer_data(dv_data->buffer);
ta_meta_free(dv_data, sizeof(*dv_data));
}
bool buffer_is_dataview(ant_value_t obj) {
return js_check_brand(obj, BRAND_DATAVIEW);
}
bool buffer_is_binary_source(ant_value_t value) {
if (vtype(value) == T_TYPEDARRAY) return true;
if (!is_object_type(value)) return false;
if (buffer_is_dataview(value)) return true;
return buffer_get_typedarray_data(value) != NULL || buffer_get_arraybuffer_data(value) != NULL;
}
bool buffer_source_get_bytes(ant_t *js, ant_value_t value, const uint8_t **out, size_t *len) {
if (out) *out = NULL;
if (len) *len = 0;
if (!buffer_is_binary_source(value)) return false;
TypedArrayData *ta = buffer_get_typedarray_data(value);
if (ta) {
if (!ta->buffer || ta->buffer->is_detached) { *out = NULL; *len = 0; return true; }
*out = ta->buffer->data + ta->byte_offset;
*len = ta->byte_length;
return true;
}
ArrayBufferData *ab = buffer_get_arraybuffer_data(value);
if (ab) {
if (ab->is_detached) { *out = NULL; *len = 0; return true; }
*out = ab->data;
*len = ab->length;
return true;
}
if (buffer_is_dataview(value)) {
DataViewData *dv = buffer_get_dataview_data(value);
if (!dv || !dv->buffer || dv->buffer->is_detached) { *out = NULL; *len = 0; return true; }
*out = dv->buffer->data + dv->byte_offset;
*len = dv->byte_length;
return true;
}
return false;
}
static bool typedarray_read_value(ant_t *js, const TypedArrayData *ta_data, size_t index, ant_value_t *out) {
if (!out || !ta_data || !ta_data->buffer || ta_data->buffer->is_detached || index >= ta_data->length) {
return false;
}
uint8_t *data = ta_data->buffer->data + ta_data->byte_offset;
switch (ta_data->type) {
case TYPED_ARRAY_INT8: *out = js_mknum((double)((int8_t *)data)[index]); return true;
case TYPED_ARRAY_UINT8:
case TYPED_ARRAY_UINT8_CLAMPED: *out = js_mknum((double)data[index]); return true;
case TYPED_ARRAY_INT16: *out = js_mknum((double)((int16_t *)data)[index]); return true;
case TYPED_ARRAY_UINT16: *out = js_mknum((double)((uint16_t *)data)[index]); return true;
case TYPED_ARRAY_INT32: *out = js_mknum((double)((int32_t *)data)[index]); return true;
case TYPED_ARRAY_UINT32: *out = js_mknum((double)((uint32_t *)data)[index]); return true;
case TYPED_ARRAY_FLOAT16: *out = js_mknum(half_to_double(((uint16_t *)data)[index])); return true;
case TYPED_ARRAY_FLOAT32: *out = js_mknum((double)((float *)data)[index]); return true;
case TYPED_ARRAY_FLOAT64: *out = js_mknum(((double *)data)[index]); return true;
case TYPED_ARRAY_BIGINT64: *out = bigint_from_int64(js, ((int64_t *)data)[index]); return !is_err(*out);
case TYPED_ARRAY_BIGUINT64: *out = bigint_from_uint64(js, ((uint64_t *)data)[index]); return !is_err(*out);
default: return false;
}
}
static bool advance_typedarray(ant_t *js, js_iter_t *it, ant_value_t *out) {
ant_value_t iter = it->iterator;
ant_value_t ta_obj = js_get_slot(iter, SLOT_DATA);
ant_value_t state_v = js_get_slot(iter, SLOT_ITER_STATE);
uint32_t state = (vtype(state_v) == T_NUM) ? (uint32_t)js_getnum(state_v) : 0;
uint32_t kind = ITER_STATE_KIND(state);
uint32_t idx = ITER_STATE_INDEX(state);
TypedArrayData *ta = buffer_get_typedarray_data(ta_obj);
if (!ta || !ta->buffer || ta->buffer->is_detached || idx >= (uint32_t)ta->length) return false;
ant_value_t value;
if (!typedarray_read_value(js, ta, idx, &value)) return false;
switch (kind) {
case ARR_ITER_KEYS:
*out = js_mknum((double)idx);
break;
case ARR_ITER_ENTRIES: {
ant_value_t pair = js_mkarr(js);
js_arr_push(js, pair, js_mknum((double)idx));
js_arr_push(js, pair, value);
*out = pair;
break;
}
default:
*out = value;
break;
}
js_set_slot(iter, SLOT_ITER_STATE, js_mknum((double)ITER_STATE_PACK(kind, idx + 1)));
return true;
}
static ant_value_t ta_iter_next(ant_t *js, ant_value_t *args, int nargs) {
js_iter_t it = { .iterator = js->this_val };
ant_value_t value;
return js_iter_result(js, advance_typedarray(js, &it, &value), value);
}
static ant_value_t ta_values(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t iter = js_mkobj(js);
js_set_slot_wb(js, iter, SLOT_DATA, js->this_val);
js_set_slot(iter, SLOT_ITER_STATE, js_mknum((double)ITER_STATE_PACK(ARR_ITER_VALUES, 0)));
js_set_proto_init(iter, g_typedarray_iter_proto);
return iter;
}
static ant_value_t ta_keys(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t iter = js_mkobj(js);
js_set_slot_wb(js, iter, SLOT_DATA, js->this_val);
js_set_slot(iter, SLOT_ITER_STATE, js_mknum((double)ITER_STATE_PACK(ARR_ITER_KEYS, 0)));
js_set_proto_init(iter, g_typedarray_iter_proto);
return iter;
}
static ant_value_t ta_entries(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t iter = js_mkobj(js);
js_set_slot_wb(js, iter, SLOT_DATA, js->this_val);
js_set_slot(iter, SLOT_ITER_STATE, js_mknum((double)ITER_STATE_PACK(ARR_ITER_ENTRIES, 0)));
js_set_proto_init(iter, g_typedarray_iter_proto);
return iter;
}
static void register_buffer(ArrayBufferData *data) {
if (!data) return;
if (!buffer_registry) {
buffer_registry = calloc(BUFFER_REGISTRY_INITIAL_CAP, sizeof(ArrayBufferData *));
if (!buffer_registry) return;
buffer_registry_cap = BUFFER_REGISTRY_INITIAL_CAP;
}
if (buffer_registry_count >= buffer_registry_cap) {
size_t new_cap = buffer_registry_cap * 2;
ArrayBufferData **new_reg = realloc(buffer_registry, new_cap * sizeof(ArrayBufferData *));
if (!new_reg) return;
buffer_registry = new_reg;
buffer_registry_cap = new_cap;
}
buffer_registry[buffer_registry_count++] = data;
}
static void unregister_buffer(ArrayBufferData *data) {
if (!data || !buffer_registry) return;
for (size_t i = 0; i < buffer_registry_count; i++) {
if (buffer_registry[i] == data) {
buffer_registry[i] = buffer_registry[--buffer_registry_count];
return;
}}
}
static inline ssize_t normalize_index(ssize_t idx, ssize_t len) {
if (idx < 0) idx += len;
if (idx < 0) return 0;
if (idx > len) return len;
return idx;
}
ArrayBufferData *create_array_buffer_data(size_t length) {
ArrayBufferData *data = ant_calloc(sizeof(ArrayBufferData) + length);
if (!data) return NULL;
data->data = (uint8_t *)(data + 1);
memset(data->data, 0, length);
data->length = length;
data->capacity = length;
data->ref_count = 1;
data->is_shared = 0;
data->is_detached = 0;
register_buffer(data);
return data;
}
static ArrayBufferData *create_shared_array_buffer_data(size_t length) {
ArrayBufferData *data = create_array_buffer_data(length);
if (data) data->is_shared = 1;
return data;
}
void free_array_buffer_data(ArrayBufferData *data) {
if (!data) return;
data->ref_count--;
if (data->ref_count <= 0) {
unregister_buffer(data);
free(data);
}
}
static size_t get_element_size(TypedArrayType type) {
static const void *dispatch[] = {
&&L_1, &&L_1, &&L_1, &&L_2, &&L_2,
&&L_4, &&L_4, &&L_2, &&L_4, &&L_8, &&L_8, &&L_8
};
if (type > TYPED_ARRAY_BIGUINT64) goto L_1;
goto *dispatch[type];
L_1: return 1;
L_2: return 2;
L_4: return 4;
L_8: return 8;
}
const char *buffer_typedarray_type_name(TypedArrayType type) {
static const char *const names[] = {
"Int8Array",
"Uint8Array",
"Uint8ClampedArray",
"Int16Array",
"Uint16Array",
"Int32Array",
"Uint32Array",
"Float16Array",
"Float32Array",
"Float64Array",
"BigInt64Array",
"BigUint64Array",
};
int i = (int)type;
if (i < 0 || i >= (int)(sizeof(names) / sizeof(names[0]))) return "Uint8Array";
return names[i];
}
static ant_value_t create_typed_array_like(
ant_t *js,
ant_value_t this_val,
TypedArrayType type,
ArrayBufferData *buffer,
size_t byte_offset,
size_t length
) {
ant_value_t ab_obj = create_arraybuffer_obj(js, buffer);
ant_value_t out = create_typed_array_with_buffer(
js,type, buffer, byte_offset,
length, buffer_typedarray_type_name(type), ab_obj
);
if (is_err(out)) return out;
ant_value_t proto = js_get_proto(js, this_val);
if (is_special_object(proto)) js_set_proto_init(out, proto);
return out;
}
static ant_value_t js_arraybuffer_constructor(ant_t *js, ant_value_t *args, int nargs) {
if (vtype(js->new_target) == T_UNDEF) {
return js_mkerr_typed(js, JS_ERR_TYPE, "ArrayBuffer constructor requires 'new'");
}
size_t length = 0;
if (nargs > 0 && vtype(args[0]) == T_NUM) {
length = (size_t)js_getnum(args[0]);
}
ArrayBufferData *data = create_array_buffer_data(length);
if (!data) {
return js_mkerr(js, "Failed to allocate ArrayBuffer");
}
ant_value_t obj = js_mkobj(js);
ant_value_t proto = js_get_ctor_proto(js, "ArrayBuffer", 11);
if (is_special_object(proto)) js_set_proto_init(obj, proto);
js_set_native_ptr(obj, data);
js_set_native_tag(obj, BUFFER_ARRAYBUFFER_NATIVE_TAG);
js_set(js, obj, "byteLength", js_mknum((double)length));
js_set_finalizer(obj, arraybuffer_finalize);
return obj;
}
// ArrayBuffer.prototype.slice(begin, end)
static ant_value_t js_arraybuffer_slice(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
ArrayBufferData *data = buffer_get_arraybuffer_data(this_val);
if (!data) return js_mkerr(js, "Invalid ArrayBuffer");
if (data->is_detached) return js_mkerr(js, "Cannot slice a detached ArrayBuffer");
ssize_t len = (ssize_t)data->length;
ssize_t begin = 0, end = len;
if (nargs > 0 && vtype(args[0]) == T_NUM) begin = (ssize_t)js_getnum(args[0]);
if (nargs > 1 && vtype(args[1]) == T_NUM) end = (ssize_t)js_getnum(args[1]);
begin = normalize_index(begin, len);
end = normalize_index(end, len);
if (end < begin) end = begin;
size_t new_length = (size_t)(end - begin);
ArrayBufferData *new_data = create_array_buffer_data(new_length);
if (!new_data) return js_mkerr(js, "Failed to allocate new ArrayBuffer");
memcpy(new_data->data, data->data + begin, new_length);
ant_value_t new_obj = js_mkobj(js);
ant_value_t proto = js_get_ctor_proto(js, "ArrayBuffer", 11);
if (is_special_object(proto)) js_set_proto_init(new_obj, proto);
js_set_native_ptr(new_obj, new_data);
js_set_native_tag(new_obj, BUFFER_ARRAYBUFFER_NATIVE_TAG);
js_set(js, new_obj, "byteLength", js_mknum((double)new_length));
js_set_finalizer(new_obj, arraybuffer_finalize);
return new_obj;
}
// ArrayBuffer.prototype.transfer(newLength)
static ant_value_t js_arraybuffer_transfer(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
ArrayBufferData *data = buffer_get_arraybuffer_data(this_val);
if (!data) return js_mkerr(js, "Invalid ArrayBuffer");
if (data->is_detached) {
return js_mkerr(js, "Cannot transfer a detached ArrayBuffer");
}
if (data->is_shared) {
return js_mkerr(js, "Cannot transfer a SharedArrayBuffer");
}
size_t new_length = data->length;
if (nargs > 0 && vtype(args[0]) == T_NUM) {
new_length = (size_t)js_getnum(args[0]);
}
ArrayBufferData *new_data = create_array_buffer_data(new_length);
if (!new_data) return js_mkerr(js, "Failed to allocate new ArrayBuffer");
size_t copy_length = data->length < new_length ? data->length : new_length;
memcpy(new_data->data, data->data, copy_length);
data->is_detached = 1;
data->length = 0;
js_set(js, this_val, "byteLength", js_mknum(0));
ant_value_t new_obj = js_mkobj(js);
ant_value_t proto = js_get_ctor_proto(js, "ArrayBuffer", 11);
if (is_special_object(proto)) js_set_proto_init(new_obj, proto);
js_set_native_ptr(new_obj, new_data);
js_set_native_tag(new_obj, BUFFER_ARRAYBUFFER_NATIVE_TAG);
js_set(js, new_obj, "byteLength", js_mknum((double)new_length));
js_set_finalizer(new_obj, arraybuffer_finalize);
return new_obj;
}
// ArrayBuffer.prototype.transferToFixedLength(newLength)
static ant_value_t js_arraybuffer_transferToFixedLength(ant_t *js, ant_value_t *args, int nargs) {
return js_arraybuffer_transfer(js, args, nargs);
}
// ArrayBuffer.prototype.detached getter
static ant_value_t js_arraybuffer_detached_getter(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
ArrayBufferData *data = buffer_get_arraybuffer_data(this_val);
if (!data) return js_false;
return js_bool(data->is_detached);
}
static ant_value_t js_arraybuffer_byteLength_getter(ant_t *js, ant_value_t *args, int nargs) {
(void)args; (void)nargs;
ant_value_t this_val = js_getthis(js);
ArrayBufferData *data = buffer_get_arraybuffer_data(this_val);
if (!data || data->is_detached) return js_mknum(0);
return js_mknum((double)data->length);
}
// ArrayBuffer.isView(value)
static ant_value_t js_arraybuffer_isView(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_false;
return js_bool(buffer_is_dataview(args[0]) || buffer_get_typedarray_data(args[0]) != NULL);
}
static ant_value_t buffer_require_bigint_value(ant_t *js, ant_value_t value) {
if (vtype(value) == T_BIGINT) return value;
if (is_object_type(value)) {
ant_value_t primitive = js_get_slot(value, SLOT_PRIMITIVE);
if (vtype(primitive) == T_BIGINT) return primitive;
}
return js_mkerr_typed(js, JS_ERR_TYPE, "Cannot convert to BigInt");
}
static ant_value_t typedarray_write_value(ant_t *js, TypedArrayData *ta_data, size_t index, ant_value_t value) {
if (!ta_data || !ta_data->buffer || ta_data->buffer->is_detached || index >= ta_data->length) {
return js_mkundef();
}
uint8_t *data = ta_data->buffer->data + ta_data->byte_offset;
switch (ta_data->type) {
case TYPED_ARRAY_INT8: ((int8_t *)data)[index] = (int8_t)js_to_number(js, value); return js_mkundef();
case TYPED_ARRAY_UINT8: data[index] = (uint8_t)js_to_number(js, value); return js_mkundef();
case TYPED_ARRAY_UINT8_CLAMPED: data[index] = (uint8_t)js_to_number(js, value); return js_mkundef();
case TYPED_ARRAY_INT16: ((int16_t *)data)[index] = (int16_t)js_to_number(js, value); return js_mkundef();
case TYPED_ARRAY_UINT16: ((uint16_t *)data)[index] = (uint16_t)js_to_number(js, value); return js_mkundef();
case TYPED_ARRAY_INT32: ((int32_t *)data)[index] = (int32_t)js_to_number(js, value); return js_mkundef();
case TYPED_ARRAY_UINT32: ((uint32_t *)data)[index] = (uint32_t)js_to_number(js, value); return js_mkundef();
case TYPED_ARRAY_FLOAT16: ((uint16_t *)data)[index] = double_to_half(js_to_number(js, value)); return js_mkundef();
case TYPED_ARRAY_FLOAT32: ((float *)data)[index] = (float)js_to_number(js, value); return js_mkundef();
case TYPED_ARRAY_FLOAT64: ((double *)data)[index] = js_to_number(js, value); return js_mkundef();
case TYPED_ARRAY_BIGINT64: {
ant_value_t bigint = buffer_require_bigint_value(js, value);
int64_t wrapped = 0;
if (is_err(bigint)) return bigint;
if (!bigint_to_int64_wrapping(js, bigint, &wrapped)) {
return js_mkerr_typed(js, JS_ERR_TYPE, "Cannot convert to BigInt");
}
((int64_t *)data)[index] = wrapped;
return js_mkundef();
}
case TYPED_ARRAY_BIGUINT64: {
ant_value_t bigint = buffer_require_bigint_value(js, value);
uint64_t wrapped = 0;
if (is_err(bigint)) return bigint;
if (!bigint_to_uint64_wrapping(js, bigint, &wrapped)) {
return js_mkerr_typed(js, JS_ERR_TYPE, "Cannot convert to BigInt");
}
((uint64_t *)data)[index] = wrapped;
return js_mkundef();
}
default:
return js_mkundef();
}
}
static ant_value_t typedarray_index_getter(ant_t *js, ant_value_t obj, const char *key, size_t key_len) {
if (key_len == 0 || key_len > 10) return js_mkundef();
size_t index = 0;
for (size_t i = 0; i < key_len; i++) {
char c = key[i];
if (c < '0' || c > '9') return js_mkundef();
index = index * 10 + (c - '0');
}
TypedArrayData *ta_data = buffer_get_typedarray_data(obj);
if (!ta_data || index >= ta_data->length) return js_mkundef();
if (!ta_data->buffer || ta_data->buffer->is_detached) return js_mkundef();
ant_value_t value;
if (!typedarray_read_value(js, ta_data, index, &value)) return js_mkundef();
return value;
}
static bool typedarray_index_setter(ant_t *js, ant_value_t obj, const char *key, size_t key_len, ant_value_t value) {
if (key_len == 0 || key_len > 10) return false;
size_t index = 0;
for (size_t i = 0; i < key_len; i++) {
char c = key[i];
if (c < '0' || c > '9') return false;
index = index * 10 + (c - '0');
}
TypedArrayData *ta_data = buffer_get_typedarray_data(obj);
if (!ta_data || index >= ta_data->length) return true;
if (!ta_data->buffer || ta_data->buffer->is_detached) return true;
return !is_err(typedarray_write_value(js, ta_data, index, value));
}
static bool typedarray_read_number(const TypedArrayData *ta_data, size_t index, double *out) {
if (!ta_data || !ta_data->buffer || ta_data->buffer->is_detached || index >= ta_data->length) return false;
uint8_t *data = ta_data->buffer->data + ta_data->byte_offset;
static const void *dispatch[] = {
&&R_INT8, &&R_UINT8, &&R_UINT8, &&R_INT16, &&R_UINT16,
&&R_INT32, &&R_UINT32, &&R_FLOAT16, &&R_FLOAT32, &&R_FLOAT64, &&R_FAIL, &&R_FAIL
};
if (ta_data->type > TYPED_ARRAY_BIGUINT64) goto R_FAIL;
goto *dispatch[ta_data->type];
R_INT8: *out = (double)((int8_t *)data)[index]; return true;
R_UINT8: *out = (double)data[index]; return true;
R_INT16: *out = (double)((int16_t *)data)[index]; return true;
R_UINT16: *out = (double)((uint16_t *)data)[index]; return true;
R_INT32: *out = (double)((int32_t *)data)[index]; return true;
R_UINT32: *out = (double)((uint32_t *)data)[index]; return true;
R_FLOAT16: *out = half_to_double(((uint16_t *)data)[index]); return true;
R_FLOAT32: *out = (double)((float *)data)[index]; return true;
R_FLOAT64: *out = ((double *)data)[index]; return true;
R_FAIL: return false;
}
static bool typedarray_write_number(TypedArrayData *ta_data, size_t index, double value) {
if (!ta_data || !ta_data->buffer || ta_data->buffer->is_detached || index >= ta_data->length) return false;
uint8_t *data = ta_data->buffer->data + ta_data->byte_offset;
static const void *dispatch[] = {
&&W_INT8, &&W_UINT8, &&W_UINT8, &&W_INT16, &&W_UINT16,
&&W_INT32, &&W_UINT32, &&W_FLOAT16, &&W_FLOAT32, &&W_FLOAT64, &&W_FAIL, &&W_FAIL
};
if (ta_data->type > TYPED_ARRAY_BIGUINT64) goto W_FAIL;
goto *dispatch[ta_data->type];
W_INT8: ((int8_t *)data)[index] = (int8_t)value; return true;
W_UINT8: data[index] = (uint8_t)value; return true;
W_INT16: ((int16_t *)data)[index] = (int16_t)value; return true;
W_UINT16: ((uint16_t *)data)[index] = (uint16_t)value; return true;
W_INT32: ((int32_t *)data)[index] = (int32_t)value; return true;
W_UINT32: ((uint32_t *)data)[index] = (uint32_t)value; return true;
W_FLOAT16: ((uint16_t *)data)[index] = double_to_half(value); return true;
W_FLOAT32: ((float *)data)[index] = (float)value; return true;
W_FLOAT64: ((double *)data)[index] = value; return true;
W_FAIL: return false;
}
static ant_value_t js_typedarray_every(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1 || !is_callable(args[0]))
return js_mkerr_typed(js, JS_ERR_TYPE, "TypedArray.prototype.every requires a callable");
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkerr(js, "Invalid TypedArray");
if (!ta_data->buffer || ta_data->buffer->is_detached)
return js_mkerr(js, "Cannot operate on a detached TypedArray");
ant_value_t callback = args[0];
ant_value_t this_arg = nargs > 1 ? args[1] : js_mkundef();
for (size_t i = 0; i < ta_data->length; i++) {
ant_value_t value = js_mkundef();
if (!typedarray_read_value(js, ta_data, i, &value)) return js_false;
ant_value_t call_args[3] = { value, js_mknum((double)i), this_val };
ant_value_t result = sv_vm_call(js->vm, js, callback, this_arg, call_args, 3, NULL, false);
if (is_err(result)) return result;
if (!js_truthy(js, result)) return js_false;
}
return js_true;
}
ant_value_t create_arraybuffer_obj(ant_t *js, ArrayBufferData *buffer) {
ant_value_t ab_obj = js_mkobj(js);
ant_value_t ab_proto = js_get_ctor_proto(js, "ArrayBuffer", 11);
if (is_special_object(ab_proto)) js_set_proto_init(ab_obj, ab_proto);
js_set_native_ptr(ab_obj, buffer);
js_set_native_tag(ab_obj, BUFFER_ARRAYBUFFER_NATIVE_TAG);
js_set(js, ab_obj, "byteLength", js_mknum((double)buffer->length));
js_set_finalizer(ab_obj, arraybuffer_finalize);
buffer->ref_count++;
return ab_obj;
}
ant_value_t create_typed_array_with_buffer(
ant_t *js, TypedArrayType type, ArrayBufferData *buffer,
size_t byte_offset, size_t length, const char *type_name, ant_value_t arraybuffer_obj
) {
TypedArrayData *ta_data = ta_meta_alloc(sizeof(TypedArrayData));
if (!ta_data) return js_mkerr(js, "Failed to allocate TypedArray");
size_t element_size = get_element_size(type);
ta_data->buffer = buffer;
ta_data->type = type;
ta_data->byte_offset = byte_offset;
ta_data->byte_length = length * element_size;
ta_data->length = length;
buffer->ref_count++;
ant_value_t obj = js_mkobj(js);
ant_value_t proto = js_get_ctor_proto(js, type_name, strlen(type_name));
if (is_special_object(proto)) js_set_proto_init(obj, proto);
js_set_native_ptr(obj, ta_data);
js_set_native_tag(obj, BUFFER_TYPEDARRAY_NATIVE_TAG);
js_set(js, obj, "length", js_mknum((double)length));
js_set(js, obj, "byteLength", js_mknum((double)(length * element_size)));
js_set(js, obj, "byteOffset", js_mknum((double)byte_offset));
js_set(js, obj, "BYTES_PER_ELEMENT", js_mknum((double)element_size));
js_set(js, obj, "buffer", arraybuffer_obj);
js_set_getter(obj, typedarray_index_getter);
js_set_setter(obj, typedarray_index_setter);
js_set_finalizer(obj, typedarray_finalize);
return obj;
}
ant_value_t create_typed_array(
ant_t *js, TypedArrayType type, ArrayBufferData *buffer,
size_t byte_offset, size_t length, const char *type_name
) {
ant_value_t ab_obj = create_arraybuffer_obj(js, buffer);
ant_value_t result = create_typed_array_with_buffer(js, type, buffer, byte_offset, length, type_name, ab_obj);
free_array_buffer_data(buffer); return result;
}
ant_value_t create_dataview_with_buffer(
ant_t *js, ArrayBufferData *buffer,
size_t byte_offset, size_t byte_length,
ant_value_t arraybuffer_obj
) {
DataViewData *dv_data = ta_meta_alloc(sizeof(DataViewData));
if (!dv_data) return js_mkerr(js, "Failed to allocate DataView");
dv_data->buffer = buffer;
dv_data->byte_offset = byte_offset;
dv_data->byte_length = byte_length;
buffer->ref_count++;
ant_value_t obj = js_mkobj(js);
ant_value_t proto = js_get_ctor_proto(js, "DataView", 8);
if (is_special_object(proto)) js_set_proto_init(obj, proto);
js_set_native_ptr(obj, dv_data);
js_set_native_tag(obj, BUFFER_DATAVIEW_NATIVE_TAG);
js_set_slot(obj, SLOT_BRAND, js_mknum(BRAND_DATAVIEW));
js_mkprop_fast(js, obj, "buffer", 6, arraybuffer_obj);
js_set_descriptor(js, obj, "buffer", 6, 0);
js_set(js, obj, "byteLength", js_mknum((double)byte_length));
js_set(js, obj, "byteOffset", js_mknum((double)byte_offset));
js_set_finalizer(obj, dataview_finalize);
return obj;
}
typedef struct {
ant_value_t *values;
size_t length;
size_t capacity;
} iter_collect_ctx_t;
static bool iter_collect_callback(ant_t *js, ant_value_t value, void *udata) {
iter_collect_ctx_t *ctx = (iter_collect_ctx_t *)udata;
if (ctx->length >= ctx->capacity) {
ctx->capacity *= 2;
ant_value_t *new_values = realloc(ctx->values, ctx->capacity * sizeof(ant_value_t));
if (!new_values) return false;
ctx->values = new_values;
}
ctx->values[ctx->length++] = value;
return true;
}
static ant_value_t js_typedarray_constructor(ant_t *js, ant_value_t *args, int nargs, TypedArrayType type, const char *type_name) {
if (nargs == 0) {
ArrayBufferData *buffer = create_array_buffer_data(0);
return create_typed_array(js, type, buffer, 0, 0, type_name);
}
if (vtype(args[0]) == T_NUM) {
size_t length = (size_t)js_getnum(args[0]);
size_t element_size = get_element_size(type);
ArrayBufferData *buffer = create_array_buffer_data(length * element_size);
if (!buffer) return js_mkerr(js, "Failed to allocate buffer");
return create_typed_array(js, type, buffer, 0, length, type_name);
}
ArrayBufferData *arraybuffer = buffer_get_arraybuffer_data(args[0]);
if (arraybuffer) {
ArrayBufferData *buffer = arraybuffer;
size_t byte_offset = 0;
size_t length = buffer->length;
if (nargs > 1 && vtype(args[1]) == T_NUM) {
byte_offset = (size_t)js_getnum(args[1]);
}
size_t element_size = get_element_size(type);
if (byte_offset > buffer->length) {
return js_mkerr(js, "Start offset is outside the bounds of the buffer");
}
if (nargs > 2 && vtype(args[2]) == T_NUM) {
length = (size_t)js_getnum(args[2]);
size_t available = buffer->length - byte_offset;
if (length > available / element_size) {
return js_mkerr(js, "Invalid TypedArray length");
}
} else length = (buffer->length - byte_offset) / element_size;
return create_typed_array_with_buffer(js, type, buffer, byte_offset, length, type_name, args[0]);
}
if (is_special_object(args[0])) {
ant_value_t len_val = js_get(js, args[0], "length");
size_t length = 0; ant_value_t *values = NULL;
bool is_iterable = false;
if (vtype(len_val) == T_NUM) length = (size_t)js_getnum(len_val); else {
iter_collect_ctx_t ctx = { .values = NULL, .length = 0, .capacity = 16 };
ctx.values = malloc(ctx.capacity * sizeof(ant_value_t));
if (!ctx.values) return js_mkerr(js, "Failed to allocate memory");
is_iterable = js_iter(js, args[0], iter_collect_callback, &ctx);
if (is_iterable) {
values = ctx.values;
length = ctx.length;
} else free(ctx.values);
}
if (length > 0 || is_iterable || vtype(len_val) == T_NUM) {
size_t element_size = get_element_size(type);
ArrayBufferData *buffer = create_array_buffer_data(length * element_size);
if (!buffer) { if (values) free(values); return js_mkerr(js, "Failed to allocate buffer"); }
ant_value_t result = create_typed_array(js, type, buffer, 0, length, type_name);
if (is_err(result)) { if (values) free(values); return result; }
TypedArrayData *result_ta = buffer_get_typedarray_data(result);
for (size_t i = 0; i < length; i++) {
ant_value_t elem;
if (values) elem = values[i]; else {
char idx_str[16];
snprintf(idx_str, sizeof(idx_str), "%zu", i);
elem = js_get(js, args[0], idx_str);
}
ant_value_t write_result = typedarray_write_value(js, result_ta, i, elem);
if (is_err(write_result)) {
if (values) free(values);
return write_result;
}
}
if (values) free(values);
return result;
}
}
return js_mkerr(js, "Invalid TypedArray constructor arguments");
}
// TypedArray.prototype.slice(begin, end)
// TypedArray.prototype.at(index)
static ant_value_t js_typedarray_at(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkerr(js, "Invalid TypedArray");
if (nargs == 0 || vtype(args[0]) != T_NUM) return js_mkundef();
ssize_t len = (ssize_t)ta_data->length;
ssize_t idx = (ssize_t)js_getnum(args[0]);
if (idx < 0) idx += len;
if (idx < 0 || idx >= len) return js_mkundef();
if (!ta_data->buffer || ta_data->buffer->is_detached) return js_mkundef();
ant_value_t value;
if (!typedarray_read_value(js, ta_data, (size_t)idx, &value)) return js_mkundef();
return value;
}
static ant_value_t js_typedarray_slice(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkerr(js, "Invalid TypedArray");
ssize_t len = (ssize_t)ta_data->length;
ssize_t begin = 0, end = len;
if (nargs > 0 && vtype(args[0]) == T_NUM) begin = (ssize_t)js_getnum(args[0]);
if (nargs > 1 && vtype(args[1]) == T_NUM) end = (ssize_t)js_getnum(args[1]);
begin = normalize_index(begin, len);
end = normalize_index(end, len);
if (end < begin) end = begin;
size_t new_length = (size_t)(end - begin);
size_t element_size = get_element_size(ta_data->type);
ArrayBufferData *new_buffer = create_array_buffer_data(new_length * element_size);
if (!new_buffer) return js_mkerr(js, "Failed to allocate new buffer");
memcpy(
new_buffer->data,
ta_data->buffer->data + ta_data->byte_offset + (size_t)begin * element_size,
new_length * element_size
);
ant_value_t out = create_typed_array_like(
js, this_val, ta_data->type,
new_buffer, 0, new_length
); free_array_buffer_data(new_buffer);
return out;
}
// TypedArray.prototype.subarray(begin, end)
static ant_value_t js_typedarray_subarray(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkerr(js, "Invalid TypedArray");
ssize_t len = (ssize_t)ta_data->length;
ssize_t begin = 0, end = len;
if (nargs > 0 && vtype(args[0]) == T_NUM) begin = (ssize_t)js_getnum(args[0]);
if (nargs > 1 && vtype(args[1]) == T_NUM) end = (ssize_t)js_getnum(args[1]);
begin = normalize_index(begin, len);
end = normalize_index(end, len);
if (end < begin) end = begin;
size_t new_length = (size_t)(end - begin);
size_t element_size = get_element_size(ta_data->type);
size_t new_offset = ta_data->byte_offset + (size_t)begin * element_size;
return create_typed_array_like(
js, this_val, ta_data->type,
ta_data->buffer, new_offset, new_length
);
}
// TypedArray.prototype.fill(value, start, end)
static ant_value_t js_typedarray_fill(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkerr(js, "Invalid TypedArray");
ant_value_t value = nargs > 0 ? args[0] : js_mknum(0);
ssize_t len = (ssize_t)ta_data->length;
ssize_t start = 0, end = len;
if (nargs > 1 && vtype(args[1]) == T_NUM) start = (ssize_t)js_getnum(args[1]);
if (nargs > 2 && vtype(args[2]) == T_NUM) end = (ssize_t)js_getnum(args[2]);
start = normalize_index(start, len);
end = normalize_index(end, len);
if (end < start) end = start;
if (ta_data->type == TYPED_ARRAY_BIGINT64 || ta_data->type == TYPED_ARRAY_BIGUINT64) {
for (ssize_t i = start; i < end; i++) {
ant_value_t write_result = typedarray_write_value(js, ta_data, (size_t)i, value);
if (is_err(write_result)) return write_result;
}
return this_val;
}
uint8_t *data = ta_data->buffer->data + ta_data->byte_offset;
static const void *dispatch[] = {
&&L_INT8, &&L_UINT8, &&L_UINT8, &&L_INT16, &&L_UINT16,
&&L_INT32, &&L_UINT32, &&L_FLOAT16, &&L_FLOAT32, &&L_FLOAT64, &&L_DONE, &&L_DONE
};
if (ta_data->type > TYPED_ARRAY_BIGUINT64) goto L_DONE;
goto *dispatch[ta_data->type];
L_INT8:
for (ssize_t i = start; i < end; i++) ((int8_t*)data)[i] = (int8_t)js_to_number(js, value);
goto L_DONE;
L_UINT8:
for (ssize_t i = start; i < end; i++) data[i] = (uint8_t)js_to_number(js, value);
goto L_DONE;
L_INT16:
for (ssize_t i = start; i < end; i++) ((int16_t*)data)[i] = (int16_t)js_to_number(js, value);
goto L_DONE;
L_UINT16:
for (ssize_t i = start; i < end; i++) ((uint16_t*)data)[i] = (uint16_t)js_to_number(js, value);
goto L_DONE;
L_INT32:
for (ssize_t i = start; i < end; i++) ((int32_t*)data)[i] = (int32_t)js_to_number(js, value);
goto L_DONE;
L_UINT32:
for (ssize_t i = start; i < end; i++) ((uint32_t*)data)[i] = (uint32_t)js_to_number(js, value);
goto L_DONE;
L_FLOAT16:
for (ssize_t i = start; i < end; i++) ((uint16_t*)data)[i] = double_to_half(js_to_number(js, value));
goto L_DONE;
L_FLOAT32:
for (ssize_t i = start; i < end; i++) ((float*)data)[i] = (float)js_to_number(js, value);
goto L_DONE;
L_FLOAT64:
for (ssize_t i = start; i < end; i++) ((double*)data)[i] = js_to_number(js, value);
goto L_DONE;
L_DONE:
return this_val;
}
// TypedArray.prototype.set(source, offset = 0)
static ant_value_t js_typedarray_set(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "set requires source argument");
ant_value_t this_val = js_getthis(js);
TypedArrayData *dst = buffer_get_typedarray_data(this_val);
if (!dst) return js_mkerr(js, "Invalid TypedArray");
if (!dst->buffer || dst->buffer->is_detached) return js_mkerr(js, "Cannot operate on a detached TypedArray");
ssize_t offset_i = 0;
if (nargs > 1 && vtype(args[1]) == T_NUM) offset_i = (ssize_t)js_getnum(args[1]);
if (offset_i < 0) return js_mkerr(js, "Offset out of bounds");
size_t offset = (size_t)offset_i;
if (offset > dst->length) return js_mkerr(js, "Offset out of bounds");
ant_value_t src_val = args[0];
TypedArrayData *src_ta = buffer_get_typedarray_data(src_val);
if (src_ta && src_ta->buffer && !src_ta->buffer->is_detached) {
size_t src_len = src_ta->length;
if (offset + src_len > dst->length) return js_mkerr(js, "Source is too large");
if (src_ta->type == dst->type) {
size_t el = get_element_size(dst->type);
uint8_t *dst_data = dst->buffer->data + dst->byte_offset + offset * el;
uint8_t *src_data = src_ta->buffer->data + src_ta->byte_offset;
memmove(dst_data, src_data, src_len * el);
return js_mkundef();
}
for (size_t i = 0; i < src_len; i++) {
ant_value_t value = js_mkundef();
if (!typedarray_read_value(js, src_ta, i, &value)) value = js_mknum(0);
ant_value_t write_result = typedarray_write_value(js, dst, offset + i, value);
if (is_err(write_result)) return write_result;
}
return js_mkundef();
}
if (!is_special_object(src_val) && vtype(src_val) != T_STR) {
return js_mkerr(js, "set source must be array-like or TypedArray");
}
size_t src_len = 0;
if (vtype(src_val) == T_STR) {
src_len = (size_t)vstrlen(js, src_val);
} else {
ant_value_t len_val = js_get(js, src_val, "length");
src_len = vtype(len_val) == T_NUM ? (size_t)js_getnum(len_val) : 0;
}
if (offset + src_len > dst->length) return js_mkerr(js, "Source is too large");
for (size_t i = 0; i < src_len; i++) {
if (vtype(src_val) == T_STR) {
ant_offset_t slen = 0;
ant_offset_t soff = vstr(js, src_val, &slen);
const unsigned char *sptr = (const unsigned char *)(uintptr_t)soff;
double value = 0;
if (i < (size_t)slen) value = sptr[i];
ant_value_t write_result = typedarray_write_value(js, dst, offset + i, js_mknum(value));
if (is_err(write_result)) return write_result;
} else {
char idx[24];
size_t idx_len = uint_to_str(idx, sizeof(idx), (uint64_t)i);
idx[idx_len] = '\0';
ant_value_t elem = js_get(js, src_val, idx);
ant_value_t write_result = typedarray_write_value(js, dst, offset + i, elem);
if (is_err(write_result)) return write_result;
}
}
return js_mkundef();
}
// TypedArray.prototype.copyWithin(target, start, end)
static ant_value_t js_typedarray_copyWithin(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta = buffer_get_typedarray_data(this_val);
if (!ta) return js_mkerr(js, "Invalid TypedArray");
if (!ta->buffer || ta->buffer->is_detached) return js_mkerr(js, "Cannot operate on a detached TypedArray");
ssize_t len = (ssize_t)ta->length;
if (len <= 0) return this_val;
ssize_t target = 0, start = 0, end = len;
if (nargs > 0 && vtype(args[0]) == T_NUM) target = (ssize_t)js_getnum(args[0]);
if (nargs > 1 && vtype(args[1]) == T_NUM) start = (ssize_t)js_getnum(args[1]);
if (nargs > 2 && vtype(args[2]) == T_NUM) end = (ssize_t)js_getnum(args[2]);
target = normalize_index(target, len);
start = normalize_index(start, len);
end = normalize_index(end, len);
if (end < start) end = start;
if (target >= len || start >= len || end <= start) return this_val;
size_t count = (size_t)(end - start);
size_t max_to_end = (size_t)(len - target);
if (count > max_to_end) count = max_to_end;
if (count == 0) return this_val;
size_t el = get_element_size(ta->type);
uint8_t *base = ta->buffer->data + ta->byte_offset;
memmove(base + (size_t)target * el, base + (size_t)start * el, count * el);
return this_val;
}
// TypedArray.prototype.toReversed()
static ant_value_t js_typedarray_toReversed(ant_t *js, ant_value_t *args, int nargs) {
(void)args; (void)nargs;
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkerr(js, "Invalid TypedArray");
size_t length = ta_data->length;
size_t element_size = get_element_size(ta_data->type);
ArrayBufferData *new_buffer = create_array_buffer_data(length * element_size);
if (!new_buffer) return js_mkerr(js, "Failed to allocate new buffer");
uint8_t *src = ta_data->buffer->data + ta_data->byte_offset;
uint8_t *dst = new_buffer->data;
for (size_t i = 0; i < length; i++) {
memcpy(dst + i * element_size, src + (length - 1 - i) * element_size, element_size);
}
ant_value_t out = create_typed_array_like(
js, this_val, ta_data->type,
new_buffer, 0, length
); free_array_buffer_data(new_buffer);
return out;
}
// TypedArray.prototype.toSorted(comparefn)
static ant_value_t js_typedarray_toSorted(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkerr(js, "Invalid TypedArray");
size_t length = ta_data->length;
size_t element_size = get_element_size(ta_data->type);
ArrayBufferData *new_buffer = create_array_buffer_data(length * element_size);
if (!new_buffer) return js_mkerr(js, "Failed to allocate new buffer");
memcpy(new_buffer->data, ta_data->buffer->data + ta_data->byte_offset, length * element_size);
ant_value_t result = create_typed_array_like(js, this_val, ta_data->type, new_buffer, 0, length);
free_array_buffer_data(new_buffer);
if (is_err(result)) return result;
TypedArrayData *result_ta = buffer_get_typedarray_data(result);
uint8_t *data = result_ta->buffer->data;
ant_value_t comparefn = (nargs > 0 && vtype(args[0]) == T_FUNC) ? args[0] : js_mkundef();
bool has_comparefn = vtype(comparefn) == T_FUNC;
for (size_t i = 1; i < length; i++) {
for (size_t j = i; j > 0; j--) {
double a_val, b_val;
int cmp;
static const void *read_dispatch[] = {
&&R_INT8, &&R_UINT8, &&R_UINT8, &&R_INT16, &&R_UINT16,
&&R_INT32, &&R_UINT32, &&R_FLOAT16, &&R_FLOAT32, &&R_FLOAT64, &&R_DONE, &&R_DONE
};
if (ta_data->type > TYPED_ARRAY_BIGUINT64) goto R_DONE;
goto *read_dispatch[ta_data->type];
R_INT8: a_val = (double)((int8_t*)data)[j-1]; b_val = (double)((int8_t*)data)[j]; goto R_COMPARE;
R_UINT8: a_val = (double)data[j-1]; b_val = (double)data[j]; goto R_COMPARE;
R_INT16: a_val = (double)((int16_t*)data)[j-1]; b_val = (double)((int16_t*)data)[j]; goto R_COMPARE;
R_UINT16: a_val = (double)((uint16_t*)data)[j-1]; b_val = (double)((uint16_t*)data)[j]; goto R_COMPARE;
R_INT32: a_val = (double)((int32_t*)data)[j-1]; b_val = (double)((int32_t*)data)[j]; goto R_COMPARE;
R_UINT32: a_val = (double)((uint32_t*)data)[j-1]; b_val = (double)((uint32_t*)data)[j]; goto R_COMPARE;
R_FLOAT16: a_val = half_to_double(((uint16_t*)data)[j-1]); b_val = half_to_double(((uint16_t*)data)[j]); goto R_COMPARE;
R_FLOAT32: a_val = (double)((float*)data)[j-1]; b_val = (double)((float*)data)[j]; goto R_COMPARE;
R_FLOAT64: a_val = ((double*)data)[j-1]; b_val = ((double*)data)[j]; goto R_COMPARE;
R_DONE: goto SORT_DONE;
R_COMPARE:
if (has_comparefn) {
ant_value_t cmp_args[2] = { js_mknum(a_val), js_mknum(b_val) };
ant_value_t cmp_result = sv_vm_call(js->vm, js, comparefn, js_mkundef(), cmp_args, 2, NULL, false);
cmp = (int)js_getnum(cmp_result);
} else {
cmp = (a_val > b_val) ? 1 : ((a_val < b_val) ? -1 : 0);
}
if (cmp <= 0) break;
static const void *swap_dispatch[] = {
&&S_INT8, &&S_UINT8, &&S_UINT8, &&S_INT16, &&S_UINT16,
&&S_INT32, &&S_UINT32, &&S_FLOAT16, &&S_FLOAT32, &&S_FLOAT64, &&S_DONE, &&S_DONE
};
if (ta_data->type > TYPED_ARRAY_BIGUINT64) goto S_DONE;
goto *swap_dispatch[ta_data->type];
S_INT8: { int8_t tmp = ((int8_t*)data)[j-1]; ((int8_t*)data)[j-1] = ((int8_t*)data)[j]; ((int8_t*)data)[j] = tmp; goto S_DONE; }
S_UINT8: { uint8_t tmp = data[j-1]; data[j-1] = data[j]; data[j] = tmp; goto S_DONE; }
S_INT16: { int16_t tmp = ((int16_t*)data)[j-1]; ((int16_t*)data)[j-1] = ((int16_t*)data)[j]; ((int16_t*)data)[j] = tmp; goto S_DONE; }
S_UINT16: { uint16_t tmp = ((uint16_t*)data)[j-1]; ((uint16_t*)data)[j-1] = ((uint16_t*)data)[j]; ((uint16_t*)data)[j] = tmp; goto S_DONE; }
S_INT32: { int32_t tmp = ((int32_t*)data)[j-1]; ((int32_t*)data)[j-1] = ((int32_t*)data)[j]; ((int32_t*)data)[j] = tmp; goto S_DONE; }
S_UINT32: { uint32_t tmp = ((uint32_t*)data)[j-1]; ((uint32_t*)data)[j-1] = ((uint32_t*)data)[j]; ((uint32_t*)data)[j] = tmp; goto S_DONE; }
S_FLOAT16: { uint16_t tmp = ((uint16_t*)data)[j-1]; ((uint16_t*)data)[j-1] = ((uint16_t*)data)[j]; ((uint16_t*)data)[j] = tmp; goto S_DONE; }
S_FLOAT32: { float tmp = ((float*)data)[j-1]; ((float*)data)[j-1] = ((float*)data)[j]; ((float*)data)[j] = tmp; goto S_DONE; }
S_FLOAT64: { double tmp = ((double*)data)[j-1]; ((double*)data)[j-1] = ((double*)data)[j]; ((double*)data)[j] = tmp; goto S_DONE; }
S_DONE:;
}
}
SORT_DONE:
return result;
}
// TypedArray.prototype.with(index, value)
static ant_value_t js_typedarray_with(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "with requires index and value");
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkerr(js, "Invalid TypedArray");
ssize_t index = (ssize_t)js_getnum(args[0]);
size_t length = ta_data->length;
if (index < 0) index = (ssize_t)length + index;
if (index < 0 || (size_t)index >= length) {
return js_mkerr(js, "Index out of bounds");
}
size_t element_size = get_element_size(ta_data->type);
ArrayBufferData *new_buffer = create_array_buffer_data(length * element_size);
if (!new_buffer) return js_mkerr(js, "Failed to allocate new buffer");
memcpy(new_buffer->data, ta_data->buffer->data + ta_data->byte_offset, length * element_size);
ant_value_t out = create_typed_array_like(
js, this_val, ta_data->type,
new_buffer, 0, length
); free_array_buffer_data(new_buffer);
if (is_err(out)) return out;
TypedArrayData *out_ta = buffer_get_typedarray_data(out);
ant_value_t write_result = typedarray_write_value(js, out_ta, (size_t)index, args[1]);
if (is_err(write_result)) return write_result;
return out;
}
#define DEFINE_TYPEDARRAY_CONSTRUCTOR(name, type) \
static ant_value_t js_##name##_constructor(ant_t *js, ant_value_t *args, int nargs) { \
if (vtype(js->new_target) == T_UNDEF) return js_mkerr_typed(js, JS_ERR_TYPE, #name " constructor requires 'new'"); \
return js_typedarray_constructor(js, args, nargs, type, #name); \
}
DEFINE_TYPEDARRAY_CONSTRUCTOR(Int8Array, TYPED_ARRAY_INT8)
DEFINE_TYPEDARRAY_CONSTRUCTOR(Uint8Array, TYPED_ARRAY_UINT8)
DEFINE_TYPEDARRAY_CONSTRUCTOR(Uint8ClampedArray, TYPED_ARRAY_UINT8_CLAMPED)
DEFINE_TYPEDARRAY_CONSTRUCTOR(Int16Array, TYPED_ARRAY_INT16)
DEFINE_TYPEDARRAY_CONSTRUCTOR(Uint16Array, TYPED_ARRAY_UINT16)
DEFINE_TYPEDARRAY_CONSTRUCTOR(Int32Array, TYPED_ARRAY_INT32)
DEFINE_TYPEDARRAY_CONSTRUCTOR(Uint32Array, TYPED_ARRAY_UINT32)
DEFINE_TYPEDARRAY_CONSTRUCTOR(Float16Array, TYPED_ARRAY_FLOAT16)
DEFINE_TYPEDARRAY_CONSTRUCTOR(Float32Array, TYPED_ARRAY_FLOAT32)
DEFINE_TYPEDARRAY_CONSTRUCTOR(Float64Array, TYPED_ARRAY_FLOAT64)
DEFINE_TYPEDARRAY_CONSTRUCTOR(BigInt64Array, TYPED_ARRAY_BIGINT64)
DEFINE_TYPEDARRAY_CONSTRUCTOR(BigUint64Array, TYPED_ARRAY_BIGUINT64)
static ant_value_t js_typedarray_from(ant_t *js, ant_value_t *args, int nargs, TypedArrayType type, const char *type_name) {
if (nargs < 1) return js_mkerr_typed(js, JS_ERR_TYPE, "%s.from requires at least 1 argument", type_name);
ant_value_t source = args[0];
bool has_map = nargs >= 2 && vtype(args[1]) != T_UNDEF;
ant_value_t map_fn = js_mkundef();
ant_value_t this_arg = nargs >= 3 ? args[2] : js_mkundef();
ant_value_t result = js_mkundef();
ant_value_t *collected = NULL;
gc_temp_root_scope_t temp_roots = {0};
bool temp_roots_active = false;
if (has_map) {
if (!is_callable(args[1])) return js_mkerr_typed(
js, JS_ERR_TYPE, "%s.from: mapFn is not a function", type_name
);
map_fn = args[1];
}
gc_temp_root_scope_begin(js, &temp_roots);
temp_roots_active = true;
if (!gc_temp_root_handle_valid(gc_temp_root_add(&temp_roots, source))) goto oom;
if (!gc_temp_root_handle_valid(gc_temp_root_add(&temp_roots, map_fn))) goto oom;
if (!gc_temp_root_handle_valid(gc_temp_root_add(&temp_roots, this_arg))) goto oom;
size_t count = 0, cap = 16;
collected = malloc(cap * sizeof(ant_value_t));
if (!collected) goto oom;
js_iter_t it;
if (js_iter_open(js, source, &it)) {
ant_value_t item;
while (js_iter_next(js, &it, &item)) {
if (count >= cap) {
cap *= 2;
ant_value_t *tmp = realloc(collected, cap * sizeof(ant_value_t));
if (!tmp) goto oom;
collected = tmp;
}
if (has_map) {
ant_value_t map_args[2] = { item, js_mknum((double)count) };
item = sv_vm_call(js->vm, js, map_fn, this_arg, map_args, 2, NULL, false);
if (is_err(item)) {
result = item;
goto done;
}
}
collected[count++] = item;
if (!gc_temp_root_handle_valid(gc_temp_root_add(&temp_roots, item))) goto oom;
}
js_iter_close(js, &it);
} else {
ant_value_t len_val = js_get(js, source, "length");
size_t len = vtype(len_val) == T_NUM ? (size_t)js_getnum(len_val) : 0;
for (size_t i = 0; i < len; i++) {
char idx[16];
snprintf(idx, sizeof(idx), "%zu", i);
ant_value_t item = js_get(js, source, idx);
if (count >= cap) {
cap *= 2;
ant_value_t *tmp = realloc(collected, cap * sizeof(ant_value_t));
if (!tmp) goto oom;
collected = tmp;
}
if (has_map) {
ant_value_t map_args[2] = { item, js_mknum((double)i) };
item = sv_vm_call(js->vm, js, map_fn, this_arg, map_args, 2, NULL, false);
if (is_err(item)) {
result = item;
goto done;
}
}
collected[count++] = item;
if (!gc_temp_root_handle_valid(gc_temp_root_add(&temp_roots, item))) goto oom;
}
}
size_t elem_size = get_element_size(type);
ArrayBufferData *buffer = create_array_buffer_data(count * elem_size);
if (!buffer) goto oom;
result = create_typed_array(js, type, buffer, 0, count, type_name);
if (is_err(result)) goto done;
if (!gc_temp_root_handle_valid(gc_temp_root_add(&temp_roots, result))) goto oom;
TypedArrayData *result_ta = buffer_get_typedarray_data(result);
for (size_t i = 0; i < count; i++) {
ant_value_t write_result = typedarray_write_value(js, result_ta, i, collected[i]);
if (is_err(write_result)) {
result = write_result;
goto done;
}
}
done:
if (temp_roots_active) gc_temp_root_scope_end(&temp_roots);
free(collected);
return result;
oom:
result = js_mkerr(js, "oom");
goto done;
}
#define DEFINE_TYPEDARRAY_FROM(name, type) \
static ant_value_t js_##name##_from(ant_t *js, ant_value_t *args, int nargs) { \
return js_typedarray_from(js, args, nargs, type, #name); \
}
DEFINE_TYPEDARRAY_FROM(Int8Array, TYPED_ARRAY_INT8)
DEFINE_TYPEDARRAY_FROM(Uint8Array, TYPED_ARRAY_UINT8)
DEFINE_TYPEDARRAY_FROM(Uint8ClampedArray, TYPED_ARRAY_UINT8_CLAMPED)
DEFINE_TYPEDARRAY_FROM(Int16Array, TYPED_ARRAY_INT16)
DEFINE_TYPEDARRAY_FROM(Uint16Array, TYPED_ARRAY_UINT16)
DEFINE_TYPEDARRAY_FROM(Int32Array, TYPED_ARRAY_INT32)
DEFINE_TYPEDARRAY_FROM(Uint32Array, TYPED_ARRAY_UINT32)
DEFINE_TYPEDARRAY_FROM(Float16Array, TYPED_ARRAY_FLOAT16)
DEFINE_TYPEDARRAY_FROM(Float32Array, TYPED_ARRAY_FLOAT32)
DEFINE_TYPEDARRAY_FROM(Float64Array, TYPED_ARRAY_FLOAT64)
DEFINE_TYPEDARRAY_FROM(BigInt64Array, TYPED_ARRAY_BIGINT64)
DEFINE_TYPEDARRAY_FROM(BigUint64Array, TYPED_ARRAY_BIGUINT64)
static ant_value_t js_dataview_constructor(ant_t *js, ant_value_t *args, int nargs) {
if (vtype(js->new_target) == T_UNDEF) {
return js_mkerr_typed(js, JS_ERR_TYPE, "DataView constructor requires 'new'");
}
if (nargs < 1) {
return js_mkerr(js, "DataView requires an ArrayBuffer");
}
ArrayBufferData *buffer = buffer_get_arraybuffer_data(args[0]);
if (!buffer) {
return js_mkerr(js, "First argument must be an ArrayBuffer");
}
size_t byte_offset = 0;
size_t byte_length = buffer->length;
if (nargs > 1 && vtype(args[1]) == T_NUM) {
byte_offset = (size_t)js_getnum(args[1]);
}
if (byte_offset > buffer->length) {
return js_mkerr(js, "Start offset is outside the bounds of the buffer");
}
if (nargs > 2 && vtype(args[2]) == T_NUM) {
byte_length = (size_t)js_getnum(args[2]);
if (byte_length > buffer->length - byte_offset) {
return js_mkerr(js, "Invalid DataView length");
}
} else byte_length = buffer->length - byte_offset;
DataViewData *dv_data = ta_meta_alloc(sizeof(DataViewData));
if (!dv_data) return js_mkerr(js, "Failed to allocate DataView");
dv_data->buffer = buffer;
dv_data->byte_offset = byte_offset;
dv_data->byte_length = byte_length;
buffer->ref_count++;
ant_value_t obj = js_mkobj(js);
ant_value_t proto = js_get_ctor_proto(js, "DataView", 8);
if (is_special_object(proto)) js_set_proto_init(obj, proto);
js_set_native_ptr(obj, dv_data);
js_set_native_tag(obj, BUFFER_DATAVIEW_NATIVE_TAG);
js_set_slot(obj, SLOT_BRAND, js_mknum(BRAND_DATAVIEW));
js_mkprop_fast(js, obj, "buffer", 6, args[0]);
js_set_descriptor(js, obj, "buffer", 6, 0);
js_set(js, obj, "byteLength", js_mknum((double)byte_length));
js_set(js, obj, "byteOffset", js_mknum((double)byte_offset));
js_set_finalizer(obj, dataview_finalize);
return obj;
}
// DataView.prototype.getUint8(byteOffset)
static ant_value_t js_dataview_getInt8(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "getInt8 requires byteOffset");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
if (offset >= dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
int8_t value = (int8_t)dv->buffer->data[dv->byte_offset + offset];
return js_mknum((double)value);
}
// DataView.prototype.setInt8(byteOffset, value)
static ant_value_t js_dataview_setInt8(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "setInt8 requires byteOffset and value");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
int8_t value = (int8_t)js_to_int32(js_getnum(args[1]));
if (offset >= dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
dv->buffer->data[dv->byte_offset + offset] = (uint8_t)value;
return js_mkundef();
}
// DataView.prototype.getUint8(byteOffset)
static ant_value_t js_dataview_getUint8(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "getUint8 requires byteOffset");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
if (offset >= dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t value = dv->buffer->data[dv->byte_offset + offset];
return js_mknum((double)value);
}
// DataView.prototype.setUint8(byteOffset, value)
static ant_value_t js_dataview_setUint8(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "setUint8 requires byteOffset and value");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
uint8_t value = (uint8_t)js_to_uint32(js_getnum(args[1]));
if (offset >= dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
dv->buffer->data[dv->byte_offset + offset] = value;
return js_mkundef();
}
// DataView.prototype.getInt16(byteOffset, littleEndian)
static ant_value_t js_dataview_getInt16(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "getInt16 requires byteOffset");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
bool little_endian = (nargs > 1 && js_truthy(js, args[1]));
if (offset + 2 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
int16_t value;
if (little_endian) {
value = (int16_t)(ptr[0] | (ptr[1] << 8));
} else {
value = (int16_t)((ptr[0] << 8) | ptr[1]);
}
return js_mknum((double)value);
}
// DataView.prototype.getUint16(byteOffset, littleEndian)
static ant_value_t js_dataview_getUint16(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "getUint16 requires byteOffset");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
bool little_endian = (nargs > 1 && js_truthy(js, args[1]));
if (offset + 2 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
uint16_t value;
if (little_endian) value = (uint16_t)(ptr[0] | (ptr[1] << 8));
else value = (uint16_t)((ptr[0] << 8) | ptr[1]);
return js_mknum((double)value);
}
// DataView.prototype.setUint16(byteOffset, value, littleEndian)
static ant_value_t js_dataview_setUint16(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "setUint16 requires byteOffset and value");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
uint16_t value = (uint16_t)js_to_uint32(js_getnum(args[1]));
bool little_endian = (nargs > 2 && js_truthy(js, args[2]));
if (offset + 2 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
if (little_endian) {
ptr[0] = (uint8_t)(value & 0xFF);
ptr[1] = (uint8_t)((value >> 8) & 0xFF);
} else {
ptr[0] = (uint8_t)((value >> 8) & 0xFF);
ptr[1] = (uint8_t)(value & 0xFF);
}
return js_mkundef();
}
// DataView.prototype.getInt32(byteOffset, littleEndian)
static ant_value_t js_dataview_getInt32(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "getInt32 requires byteOffset");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
bool little_endian = (nargs > 1 && js_truthy(js, args[1]));
if (offset + 4 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
int32_t value;
if (little_endian) {
value = (int32_t)(ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24));
} else {
value = (int32_t)((ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3]);
}
return js_mknum((double)value);
}
// DataView.prototype.getFloat32(byteOffset, littleEndian)
static ant_value_t js_dataview_getFloat32(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "getFloat32 requires byteOffset");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
bool little_endian = (nargs > 1 && js_truthy(js, args[1]));
if (offset + 4 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
uint32_t bits;
if (little_endian) {
bits = ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24);
} else {
bits = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
}
float value;
memcpy(&value, &bits, 4);
return js_mknum((double)value);
}
// DataView.prototype.setInt16(byteOffset, value, littleEndian)
static ant_value_t js_dataview_setInt16(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "setInt16 requires byteOffset and value");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
int16_t value = (int16_t)js_to_int32(js_getnum(args[1]));
bool little_endian = (nargs > 2 && js_truthy(js, args[2]));
if (offset + 2 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
if (little_endian) {
ptr[0] = (uint8_t)(value & 0xFF);
ptr[1] = (uint8_t)((value >> 8) & 0xFF);
} else {
ptr[0] = (uint8_t)((value >> 8) & 0xFF);
ptr[1] = (uint8_t)(value & 0xFF);
}
return js_mkundef();
}
// DataView.prototype.setInt32(byteOffset, value, littleEndian)
static ant_value_t js_dataview_setInt32(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "setInt32 requires byteOffset and value");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
int32_t value = js_to_int32(js_getnum(args[1]));
bool little_endian = (nargs > 2 && js_truthy(js, args[2]));
if (offset + 4 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
if (little_endian) {
ptr[0] = (uint8_t)(value & 0xFF);
ptr[1] = (uint8_t)((value >> 8) & 0xFF);
ptr[2] = (uint8_t)((value >> 16) & 0xFF);
ptr[3] = (uint8_t)((value >> 24) & 0xFF);
} else {
ptr[0] = (uint8_t)((value >> 24) & 0xFF);
ptr[1] = (uint8_t)((value >> 16) & 0xFF);
ptr[2] = (uint8_t)((value >> 8) & 0xFF);
ptr[3] = (uint8_t)(value & 0xFF);
}
return js_mkundef();
}
// DataView.prototype.getUint32(byteOffset, littleEndian)
static ant_value_t js_dataview_getUint32(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "getUint32 requires byteOffset");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
bool little_endian = (nargs > 1 && js_truthy(js, args[1]));
if (offset + 4 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
uint32_t value;
if (little_endian) value = (uint32_t)(ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24));
else value = (uint32_t)((ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3]);
return js_mknum((double)value);
}
// DataView.prototype.setUint32(byteOffset, value, littleEndian)
static ant_value_t js_dataview_setUint32(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "setUint32 requires byteOffset and value");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
uint32_t value = js_to_uint32(js_getnum(args[1]));
bool little_endian = (nargs > 2 && js_truthy(js, args[2]));
if (offset + 4 > dv->byte_length) return js_mkerr(js, "Offset out of bounds");
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
if (little_endian) {
ptr[0] = (uint8_t)(value & 0xFF);
ptr[1] = (uint8_t)((value >> 8) & 0xFF);
ptr[2] = (uint8_t)((value >> 16) & 0xFF);
ptr[3] = (uint8_t)((value >> 24) & 0xFF);
} else {
ptr[0] = (uint8_t)((value >> 24) & 0xFF);
ptr[1] = (uint8_t)((value >> 16) & 0xFF);
ptr[2] = (uint8_t)((value >> 8) & 0xFF);
ptr[3] = (uint8_t)(value & 0xFF);
}
return js_mkundef();
}
// DataView.prototype.setFloat32(byteOffset, value, littleEndian)
static ant_value_t js_dataview_setFloat32(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "setFloat32 requires byteOffset and value");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
float value = (float)js_getnum(args[1]);
bool little_endian = (nargs > 2 && js_truthy(js, args[2]));
if (offset + 4 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
uint32_t bits;
memcpy(&bits, &value, 4);
if (little_endian) {
ptr[0] = (uint8_t)(bits & 0xFF);
ptr[1] = (uint8_t)((bits >> 8) & 0xFF);
ptr[2] = (uint8_t)((bits >> 16) & 0xFF);
ptr[3] = (uint8_t)((bits >> 24) & 0xFF);
} else {
ptr[0] = (uint8_t)((bits >> 24) & 0xFF);
ptr[1] = (uint8_t)((bits >> 16) & 0xFF);
ptr[2] = (uint8_t)((bits >> 8) & 0xFF);
ptr[3] = (uint8_t)(bits & 0xFF);
}
return js_mkundef();
}
// DataView.prototype.getFloat64(byteOffset, littleEndian)
static ant_value_t js_dataview_getFloat64(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "getFloat64 requires byteOffset");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
bool little_endian = (nargs > 1 && js_truthy(js, args[1]));
if (offset + 8 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
uint64_t bits;
if (little_endian) {
bits = (uint64_t)ptr[0] | ((uint64_t)ptr[1] << 8) | ((uint64_t)ptr[2] << 16) | ((uint64_t)ptr[3] << 24) |
((uint64_t)ptr[4] << 32) | ((uint64_t)ptr[5] << 40) | ((uint64_t)ptr[6] << 48) | ((uint64_t)ptr[7] << 56);
} else {
bits = ((uint64_t)ptr[0] << 56) | ((uint64_t)ptr[1] << 48) | ((uint64_t)ptr[2] << 40) | ((uint64_t)ptr[3] << 32) |
((uint64_t)ptr[4] << 24) | ((uint64_t)ptr[5] << 16) | ((uint64_t)ptr[6] << 8) | (uint64_t)ptr[7];
}
double value;
memcpy(&value, &bits, 8);
return js_mknum(value);
}
// DataView.prototype.setFloat64(byteOffset, value, littleEndian)
static ant_value_t js_dataview_setFloat64(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "setFloat64 requires byteOffset and value");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
double value = js_getnum(args[1]);
bool little_endian = (nargs > 2 && js_truthy(js, args[2]));
if (offset + 8 > dv->byte_length) {
return js_mkerr(js, "Offset out of bounds");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
uint64_t bits;
memcpy(&bits, &value, 8);
if (little_endian) {
ptr[0] = (uint8_t)(bits & 0xFF);
ptr[1] = (uint8_t)((bits >> 8) & 0xFF);
ptr[2] = (uint8_t)((bits >> 16) & 0xFF);
ptr[3] = (uint8_t)((bits >> 24) & 0xFF);
ptr[4] = (uint8_t)((bits >> 32) & 0xFF);
ptr[5] = (uint8_t)((bits >> 40) & 0xFF);
ptr[6] = (uint8_t)((bits >> 48) & 0xFF);
ptr[7] = (uint8_t)((bits >> 56) & 0xFF);
} else {
ptr[0] = (uint8_t)((bits >> 56) & 0xFF);
ptr[1] = (uint8_t)((bits >> 48) & 0xFF);
ptr[2] = (uint8_t)((bits >> 40) & 0xFF);
ptr[3] = (uint8_t)((bits >> 32) & 0xFF);
ptr[4] = (uint8_t)((bits >> 24) & 0xFF);
ptr[5] = (uint8_t)((bits >> 16) & 0xFF);
ptr[6] = (uint8_t)((bits >> 8) & 0xFF);
ptr[7] = (uint8_t)(bits & 0xFF);
}
return js_mkundef();
}
static ant_value_t js_dataview_getBigInt64(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "getBigInt64 requires byteOffset");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
bool little_endian = (nargs > 1 && js_truthy(js, args[1]));
if (offset + 8 > dv->byte_length) return js_mkerr(js, "Offset out of bounds");
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
uint64_t bits;
if (little_endian) {
bits = (uint64_t)ptr[0] | ((uint64_t)ptr[1] << 8) | ((uint64_t)ptr[2] << 16) | ((uint64_t)ptr[3] << 24) |
((uint64_t)ptr[4] << 32) | ((uint64_t)ptr[5] << 40) | ((uint64_t)ptr[6] << 48) | ((uint64_t)ptr[7] << 56);
} else {
bits = ((uint64_t)ptr[0] << 56) | ((uint64_t)ptr[1] << 48) | ((uint64_t)ptr[2] << 40) | ((uint64_t)ptr[3] << 32) |
((uint64_t)ptr[4] << 24) | ((uint64_t)ptr[5] << 16) | ((uint64_t)ptr[6] << 8) | (uint64_t)ptr[7];
}
return bigint_from_int64(js, (int64_t)bits);
}
static ant_value_t js_dataview_setBigInt64(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "setBigInt64 requires byteOffset and value");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
ant_value_t bigint = buffer_require_bigint_value(js, args[1]);
bool little_endian = (nargs > 2 && js_truthy(js, args[2]));
int64_t wrapped = 0;
if (is_err(bigint)) return bigint;
if (offset + 8 > dv->byte_length) return js_mkerr(js, "Offset out of bounds");
if (!bigint_to_int64_wrapping(js, bigint, &wrapped)) {
return js_mkerr_typed(js, JS_ERR_TYPE, "Cannot convert to BigInt");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
uint64_t bits = (uint64_t)wrapped;
if (little_endian) {
ptr[0] = (uint8_t)(bits & 0xFF);
ptr[1] = (uint8_t)((bits >> 8) & 0xFF);
ptr[2] = (uint8_t)((bits >> 16) & 0xFF);
ptr[3] = (uint8_t)((bits >> 24) & 0xFF);
ptr[4] = (uint8_t)((bits >> 32) & 0xFF);
ptr[5] = (uint8_t)((bits >> 40) & 0xFF);
ptr[6] = (uint8_t)((bits >> 48) & 0xFF);
ptr[7] = (uint8_t)((bits >> 56) & 0xFF);
} else {
ptr[0] = (uint8_t)((bits >> 56) & 0xFF);
ptr[1] = (uint8_t)((bits >> 48) & 0xFF);
ptr[2] = (uint8_t)((bits >> 40) & 0xFF);
ptr[3] = (uint8_t)((bits >> 32) & 0xFF);
ptr[4] = (uint8_t)((bits >> 24) & 0xFF);
ptr[5] = (uint8_t)((bits >> 16) & 0xFF);
ptr[6] = (uint8_t)((bits >> 8) & 0xFF);
ptr[7] = (uint8_t)(bits & 0xFF);
}
return js_mkundef();
}
static ant_value_t js_dataview_getBigUint64(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "getBigUint64 requires byteOffset");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
bool little_endian = (nargs > 1 && js_truthy(js, args[1]));
if (offset + 8 > dv->byte_length) return js_mkerr(js, "Offset out of bounds");
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
uint64_t bits;
if (little_endian) {
bits = (uint64_t)ptr[0] | ((uint64_t)ptr[1] << 8) | ((uint64_t)ptr[2] << 16) | ((uint64_t)ptr[3] << 24) |
((uint64_t)ptr[4] << 32) | ((uint64_t)ptr[5] << 40) | ((uint64_t)ptr[6] << 48) | ((uint64_t)ptr[7] << 56);
} else {
bits = ((uint64_t)ptr[0] << 56) | ((uint64_t)ptr[1] << 48) | ((uint64_t)ptr[2] << 40) | ((uint64_t)ptr[3] << 32) |
((uint64_t)ptr[4] << 24) | ((uint64_t)ptr[5] << 16) | ((uint64_t)ptr[6] << 8) | (uint64_t)ptr[7];
}
return bigint_from_uint64(js, bits);
}
static ant_value_t js_dataview_setBigUint64(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "setBigUint64 requires byteOffset and value");
ant_value_t this_val = js_getthis(js);
DataViewData *dv = buffer_get_dataview_data(this_val);
if (!dv) return js_mkerr(js, "Not a DataView");
size_t offset = (size_t)js_getnum(args[0]);
ant_value_t bigint = buffer_require_bigint_value(js, args[1]);
bool little_endian = (nargs > 2 && js_truthy(js, args[2]));
uint64_t wrapped = 0;
if (is_err(bigint)) return bigint;
if (offset + 8 > dv->byte_length) return js_mkerr(js, "Offset out of bounds");
if (!bigint_to_uint64_wrapping(js, bigint, &wrapped)) {
return js_mkerr_typed(js, JS_ERR_TYPE, "Cannot convert to BigInt");
}
uint8_t *ptr = dv->buffer->data + dv->byte_offset + offset;
if (little_endian) {
ptr[0] = (uint8_t)(wrapped & 0xFF);
ptr[1] = (uint8_t)((wrapped >> 8) & 0xFF);
ptr[2] = (uint8_t)((wrapped >> 16) & 0xFF);
ptr[3] = (uint8_t)((wrapped >> 24) & 0xFF);
ptr[4] = (uint8_t)((wrapped >> 32) & 0xFF);
ptr[5] = (uint8_t)((wrapped >> 40) & 0xFF);
ptr[6] = (uint8_t)((wrapped >> 48) & 0xFF);
ptr[7] = (uint8_t)((wrapped >> 56) & 0xFF);
} else {
ptr[0] = (uint8_t)((wrapped >> 56) & 0xFF);
ptr[1] = (uint8_t)((wrapped >> 48) & 0xFF);
ptr[2] = (uint8_t)((wrapped >> 40) & 0xFF);
ptr[3] = (uint8_t)((wrapped >> 32) & 0xFF);
ptr[4] = (uint8_t)((wrapped >> 24) & 0xFF);
ptr[5] = (uint8_t)((wrapped >> 16) & 0xFF);
ptr[6] = (uint8_t)((wrapped >> 8) & 0xFF);
ptr[7] = (uint8_t)(wrapped & 0xFF);
}
return js_mkundef();
}
static uint8_t *hex_decode(const char *data, size_t len, size_t *out_len) {
if (len % 2 != 0) return NULL;
size_t decoded_len = len / 2;
size_t alloc_len = decoded_len;
if (alloc_len == 0) alloc_len = 1;
uint8_t *decoded = malloc(alloc_len);
if (!decoded) return NULL;
for (size_t i = 0; i < decoded_len; i++) {
unsigned char hi_ch = (unsigned char)data[i * 2];
unsigned char lo_ch = (unsigned char)data[i * 2 + 1];
int hi; int lo;
if (hi_ch >= '0' && hi_ch <= '9') { hi = hi_ch - '0'; goto have_hi; }
if (hi_ch >= 'a' && hi_ch <= 'f') { hi = hi_ch - 'a' + 10; goto have_hi; }
if (hi_ch >= 'A' && hi_ch <= 'F') { hi = hi_ch - 'A' + 10; goto have_hi; }
goto fail;
have_hi:
if (lo_ch >= '0' && lo_ch <= '9') { lo = lo_ch - '0'; goto have_lo; }
if (lo_ch >= 'a' && lo_ch <= 'f') { lo = lo_ch - 'a' + 10; goto have_lo; }
if (lo_ch >= 'A' && lo_ch <= 'F') { lo = lo_ch - 'A' + 10; goto have_lo; }
goto fail;
have_lo:
decoded[i] = (uint8_t)((hi << 4) | lo);
}
*out_len = decoded_len;
return decoded;
fail:
free(decoded);
return NULL;
}
static ant_value_t uint8array_from_bytes(ant_t *js, const uint8_t *bytes, size_t len) {
ArrayBufferData *buffer = create_array_buffer_data(len);
if (!buffer) return js_mkerr(js, "Failed to allocate buffer");
if (len > 0) memcpy(buffer->data, bytes, len);
return create_typed_array(js, TYPED_ARRAY_UINT8, buffer, 0, len, "Uint8Array");
}
static ant_value_t js_uint8array_fromHex(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t source = nargs > 0 ? js_tostring_val(js, args[0]) : js_mkstr(js, "", 0);
if (is_err(source)) return source;
size_t len = 0;
char *str = js_getstr(js, source, &len);
size_t decoded_len = 0;
uint8_t *decoded = hex_decode(str, len, &decoded_len);
if (!decoded) return js_mkerr_typed(js, JS_ERR_SYNTAX, "Invalid hex string");
ant_value_t result = uint8array_from_bytes(js, decoded, decoded_len);
free(decoded);
return result;
}
static ant_value_t js_uint8array_fromBase64(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t source = nargs > 0 ? js_tostring_val(js, args[0]) : js_mkstr(js, "", 0);
if (is_err(source)) return source;
size_t len = 0;
char *str = js_getstr(js, source, &len);
size_t decoded_len = 0;
uint8_t *decoded = ant_base64_decode(str, len, &decoded_len);
if (!decoded) return js_mkerr_typed(js, JS_ERR_SYNTAX, "Invalid base64 string");
ant_value_t result = uint8array_from_bytes(js, decoded, decoded_len);
free(decoded);
return result;
}
static ant_value_t js_uint8array_toHex(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data || ta_data->type != TYPED_ARRAY_UINT8)
return js_mkerr(js, "Uint8Array.prototype.toHex called on incompatible receiver");
if (!ta_data->buffer || ta_data->buffer->is_detached)
return js_mkerr(js, "Cannot read from detached Uint8Array");
uint8_t *data = ta_data->buffer->data + ta_data->byte_offset;
size_t len = ta_data->byte_length;
char *hex = malloc(len * 2 + 1);
if (!hex) return js_mkerr(js, "Failed to allocate hex string");
for (size_t i = 0; i < len; i++) snprintf(hex + i * 2, 3, "%02x", data[i]);
ant_value_t result = js_mkstr(js, hex, len * 2);
free(hex);
return result;
}
static ant_value_t js_uint8array_toBase64(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data || ta_data->type != TYPED_ARRAY_UINT8)
return js_mkerr(js, "Uint8Array.prototype.toBase64 called on incompatible receiver");
if (!ta_data->buffer || ta_data->buffer->is_detached)
return js_mkerr(js, "Cannot read from detached Uint8Array");
size_t out_len = 0;
char *encoded = ant_base64_encode(
ta_data->buffer->data + ta_data->byte_offset,
ta_data->byte_length, &out_len
);
if (!encoded) return js_mkerr(js, "Failed to encode base64");
ant_value_t result = js_mkstr(js, encoded, out_len);
free(encoded);
return result;
}
static ant_value_t uint8array_set_result(ant_t *js, size_t read, size_t written) {
ant_value_t result = js_mkobj(js);
js_set(js, result, "read", js_mknum((double)read));
js_set(js, result, "written", js_mknum((double)written));
return result;
}
static ant_value_t uint8array_set_bytes(ant_t *js, const uint8_t *bytes, size_t byte_len, size_t read) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data || ta_data->type != TYPED_ARRAY_UINT8)
return js_mkerr(js, "Uint8Array setFrom called on incompatible receiver");
if (!ta_data->buffer || ta_data->buffer->is_detached)
return js_mkerr(js, "Cannot write to detached Uint8Array");
if (byte_len > ta_data->byte_length)
return js_mkerr_typed(js, JS_ERR_RANGE, "Decoded data does not fit in Uint8Array");
if (byte_len > 0) memcpy(ta_data->buffer->data + ta_data->byte_offset, bytes, byte_len);
return uint8array_set_result(js, read, byte_len);
}
static ant_value_t js_uint8array_setFromHex(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t source = nargs > 0 ? js_tostring_val(js, args[0]) : js_mkstr(js, "", 0);
if (is_err(source)) return source;
size_t len = 0;
char *str = js_getstr(js, source, &len);
size_t decoded_len = 0;
uint8_t *decoded = hex_decode(str, len, &decoded_len);
if (!decoded) return js_mkerr_typed(js, JS_ERR_SYNTAX, "Invalid hex string");
ant_value_t result = uint8array_set_bytes(js, decoded, decoded_len, len);
free(decoded);
return result;
}
static ant_value_t js_uint8array_setFromBase64(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t source = nargs > 0 ? js_tostring_val(js, args[0]) : js_mkstr(js, "", 0);
if (is_err(source)) return source;
size_t len = 0;
char *str = js_getstr(js, source, &len);
size_t decoded_len = 0;
uint8_t *decoded = ant_base64_decode(str, len, &decoded_len);
if (!decoded) return js_mkerr_typed(js, JS_ERR_SYNTAX, "Invalid base64 string");
ant_value_t result = uint8array_set_bytes(js, decoded, decoded_len, len);
free(decoded);
return result;
}
typedef enum {
ENC_UTF8,
ENC_HEX,
ENC_BASE64,
ENC_ASCII,
ENC_LATIN1,
ENC_UCS2,
ENC_UNKNOWN
} BufferEncoding;
static BufferEncoding parse_encoding(const char *enc, size_t len) {
if (len == 3 && strncasecmp(enc, "hex", 3) == 0) return ENC_HEX;
if (len == 5 && strncasecmp(enc, "ascii", 5) == 0) return ENC_ASCII;
if (len == 6 && strncasecmp(enc, "base64", 6) == 0) return ENC_BASE64;
if ((len == 4 && strncasecmp(enc, "utf8", 4) == 0) || (len == 5 && strncasecmp(enc, "utf-8", 5) == 0)) return ENC_UTF8;
if ((len == 6 && strncasecmp(enc, "latin1", 6) == 0) || (len == 6 && strncasecmp(enc, "binary", 6) == 0)) return ENC_LATIN1;
if (
(len == 4 && strncasecmp(enc, "ucs2", 4) == 0) ||
(len == 5 && strncasecmp(enc, "ucs-2", 5) == 0) ||
(len == 7 && strncasecmp(enc, "utf16le", 7) == 0) ||
(len == 8 && strncasecmp(enc, "utf-16le", 8) == 0)
) return ENC_UCS2;
return ENC_UNKNOWN;
}
// Buffer.from(array/string/buffer, encoding)
static ant_value_t js_buffer_from(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "Buffer.from requires at least one argument");
if (vtype(args[0]) == T_STR) {
size_t len;
char *str = js_getstr(js, args[0], &len);
BufferEncoding encoding = ENC_UTF8;
if (nargs >= 2 && vtype(args[1]) == T_STR) {
size_t enc_len;
char *enc_str = js_getstr(js, args[1], &enc_len);
encoding = parse_encoding(enc_str, enc_len);
if (encoding == ENC_UNKNOWN) encoding = ENC_UTF8;
}
if (encoding == ENC_BASE64) {
size_t decoded_len;
uint8_t *decoded = ant_base64_decode(str, len, &decoded_len);
if (!decoded) return js_mkerr(js, "Failed to decode base64");
ArrayBufferData *buffer = create_array_buffer_data(decoded_len);
if (!buffer) { free(decoded); return js_mkerr(js, "Failed to allocate buffer"); }
memcpy(buffer->data, decoded, decoded_len);
free(decoded);
return create_typed_array(js, TYPED_ARRAY_UINT8, buffer, 0, decoded_len, "Buffer");
} else if (encoding == ENC_HEX) {
size_t decoded_len;
uint8_t *decoded = hex_decode(str, len, &decoded_len);
if (!decoded) return js_mkerr(js, "Failed to decode hex");
ArrayBufferData *buffer = create_array_buffer_data(decoded_len);
if (!buffer) { free(decoded); return js_mkerr(js, "Failed to allocate buffer"); }
memcpy(buffer->data, decoded, decoded_len);
free(decoded);
return create_typed_array(js, TYPED_ARRAY_UINT8, buffer, 0, decoded_len, "Buffer");
} else if (encoding == ENC_UCS2) {
size_t decoded_len = len * 2;
ArrayBufferData *buffer = create_array_buffer_data(decoded_len);
if (!buffer) return js_mkerr(js, "Failed to allocate buffer");
for (size_t i = 0; i < len; i++) {
buffer->data[i * 2] = (uint8_t)str[i];
buffer->data[i * 2 + 1] = 0;
}
return create_typed_array(js, TYPED_ARRAY_UINT8, buffer, 0, decoded_len, "Buffer");
} else {
ArrayBufferData *buffer = create_array_buffer_data(len);
if (!buffer) return js_mkerr(js, "Failed to allocate buffer");
memcpy(buffer->data, str, len);
return create_typed_array(js, TYPED_ARRAY_UINT8, buffer, 0, len, "Buffer");
}
}
ant_value_t length_val = js_get(js, args[0], "length");
if (vtype(length_val) == T_NUM) {
size_t len = (size_t)js_getnum(length_val);
ArrayBufferData *buffer = create_array_buffer_data(len);
if (!buffer) return js_mkerr(js, "Failed to allocate buffer");
for (size_t i = 0; i < len; i++) {
char idx_str[32];
snprintf(idx_str, sizeof(idx_str), "%zu", i);
ant_value_t elem = js_get(js, args[0], idx_str);
if (vtype(elem) == T_NUM) {
buffer->data[i] = (uint8_t)js_getnum(elem);
}
}
return create_typed_array(js, TYPED_ARRAY_UINT8, buffer, 0, len, "Buffer");
}
return js_mkerr(js, "Invalid argument to Buffer.from");
}
// Buffer.alloc(size)
static ant_value_t js_buffer_alloc(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) {
return js_mkerr(js, "Buffer.alloc requires a size argument");
}
size_t size = (size_t)js_getnum(args[0]);
ArrayBufferData *buffer = create_array_buffer_data(size);
if (!buffer) return js_mkerr(js, "Failed to allocate buffer");
memset(buffer->data, 0, size);
return create_typed_array(js, TYPED_ARRAY_UINT8, buffer, 0, size, "Buffer");
}
// Buffer.allocUnsafe(size)
static ant_value_t js_buffer_allocUnsafe(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) {
return js_mkerr(js, "Buffer.allocUnsafe requires a size argument");
}
size_t size = (size_t)js_getnum(args[0]);
ArrayBufferData *buffer = create_array_buffer_data(size);
if (!buffer) return js_mkerr(js, "Failed to allocate buffer");
return create_typed_array(js, TYPED_ARRAY_UINT8, buffer, 0, size, "Buffer");
}
static ant_value_t typedarray_join_with(ant_t *js, ant_value_t this_val, const char *sep, size_t sep_len) {
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkstr(js, "", 0);
if (!ta_data->buffer || ta_data->buffer->is_detached || ta_data->length == 0)
return js_mkstr(js, "", 0);
uint8_t *data = ta_data->buffer->data + ta_data->byte_offset;
size_t len = ta_data->length;
size_t cap = len * 12;
char *buf = malloc(cap);
if (!buf) return js_mkerr(js, "Out of memory");
size_t pos = 0;
for (size_t i = 0; i < len; i++) {
if (i > 0) {
if (pos + sep_len + 32 > cap) {
cap *= 2;
char *tmp = realloc(buf, cap);
if (!tmp) { free(buf); return js_mkerr(js, "Out of memory"); }
buf = tmp;
}
memcpy(buf + pos, sep, sep_len);
pos += sep_len;
}
if (pos + 32 > cap) {
cap *= 2;
char *tmp = realloc(buf, cap);
if (!tmp) { free(buf); return js_mkerr(js, "Out of memory"); }
buf = tmp;
}
int written = 0;
switch (ta_data->type) {
case TYPED_ARRAY_INT8: written = snprintf(buf + pos, cap - pos, "%d", ((int8_t*)data)[i]); break;
case TYPED_ARRAY_UINT8:
case TYPED_ARRAY_UINT8_CLAMPED: written = snprintf(buf + pos, cap - pos, "%u", data[i]); break;
case TYPED_ARRAY_INT16: written = snprintf(buf + pos, cap - pos, "%d", ((int16_t*)data)[i]); break;
case TYPED_ARRAY_UINT16: written = snprintf(buf + pos, cap - pos, "%u", ((uint16_t*)data)[i]); break;
case TYPED_ARRAY_INT32: written = snprintf(buf + pos, cap - pos, "%d", ((int32_t*)data)[i]); break;
case TYPED_ARRAY_UINT32: written = snprintf(buf + pos, cap - pos, "%u", ((uint32_t*)data)[i]); break;
case TYPED_ARRAY_FLOAT16: written = snprintf(buf + pos, cap - pos, "%g", half_to_double(((uint16_t*)data)[i])); break;
case TYPED_ARRAY_FLOAT32: written = snprintf(buf + pos, cap - pos, "%g", (double)((float*)data)[i]); break;
case TYPED_ARRAY_FLOAT64: written = snprintf(buf + pos, cap - pos, "%g", ((double*)data)[i]); break;
case TYPED_ARRAY_BIGINT64: written = snprintf(buf + pos, cap - pos, "%lld", ((long long*)data)[i]); break;
case TYPED_ARRAY_BIGUINT64: written = snprintf(buf + pos, cap - pos, "%llu", ((unsigned long long*)data)[i]); break;
default: break;
}
if (written > 0) pos += (size_t)written;
}
ant_value_t ret = js_mkstr(js, buf, pos);
free(buf);
return ret;
}
// TypedArray.prototype.toString()
static ant_value_t js_typedarray_toString(ant_t *js, ant_value_t *args, int nargs) {
return typedarray_join_with(js, js_getthis(js), ",", 1);
}
// TypedArray.prototype.join(separator)
static ant_value_t js_typedarray_join(ant_t *js, ant_value_t *args, int nargs) {
const char *sep = ",";
size_t sep_len = 1;
if (nargs > 0 && vtype(args[0]) == T_STR)
sep = js_getstr(js, args[0], &sep_len);
return typedarray_join_with(js, js_getthis(js), sep, sep_len);
}
static ant_value_t js_typedarray_indexOf(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data || !ta_data->buffer || ta_data->buffer->is_detached) return js_mknum(-1);
size_t len = ta_data->length;
if (len == 0 || nargs < 1) return js_mknum(-1);
int64_t from_index = 0;
if (nargs > 1 && vtype(args[1]) != T_UNDEF) {
from_index = (int64_t)js_to_number(js, args[1]);
if (from_index < 0) {
from_index += (int64_t)len;
if (from_index < 0) from_index = 0;
}}
if ((size_t)from_index >= len) return js_mknum(-1);
uint8_t *data = ta_data->buffer->data + ta_data->byte_offset;
double needle_num = js_to_number(js, args[0]);
for (size_t i = (size_t)from_index; i < len; i++) {
bool match = false;
switch (ta_data->type) {
case TYPED_ARRAY_INT8: match = ((int8_t *)data)[i] == (int8_t)needle_num; break;
case TYPED_ARRAY_UINT8:
case TYPED_ARRAY_UINT8_CLAMPED: match = data[i] == (uint8_t)needle_num; break;
case TYPED_ARRAY_INT16: match = ((int16_t *)data)[i] == (int16_t)needle_num; break;
case TYPED_ARRAY_UINT16: match = ((uint16_t *)data)[i] == (uint16_t)needle_num; break;
case TYPED_ARRAY_INT32: match = ((int32_t *)data)[i] == (int32_t)needle_num; break;
case TYPED_ARRAY_UINT32: match = ((uint32_t *)data)[i] == (uint32_t)needle_num; break;
case TYPED_ARRAY_FLOAT16: match = half_to_double(((uint16_t *)data)[i]) == needle_num; break;
case TYPED_ARRAY_FLOAT32: match = ((float *)data)[i] == (float)needle_num; break;
case TYPED_ARRAY_FLOAT64: match = ((double *)data)[i] == needle_num; break;
case TYPED_ARRAY_BIGINT64: match = ((int64_t *)data)[i] == (int64_t)needle_num; break;
case TYPED_ARRAY_BIGUINT64: match = ((uint64_t *)data)[i] == (uint64_t)needle_num; break;
default: break;
}
if (match) return js_mknum((double)i);
}
return js_mknum(-1);
}
static ant_value_t js_typedarray_includes(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data || !ta_data->buffer || ta_data->buffer->is_detached) {
return js_mkerr(js, "Invalid TypedArray");
}
size_t len = ta_data->length;
ant_value_t search = (nargs > 0) ? args[0] : js_mkundef();
if (len == 0) return js_false;
int64_t from_index = 0;
if (nargs > 1 && vtype(args[1]) != T_UNDEF) {
double from_index_num = js_to_number(js, args[1]);
if (!isnan(from_index_num)) from_index = (int64_t)from_index_num;
if (from_index < 0) {
from_index += (int64_t)len;
if (from_index < 0) from_index = 0;
}}
if ((size_t)from_index >= len) return js_false;
if (ta_data->type == TYPED_ARRAY_BIGINT64) {
int64_t needle = 0;
if (vtype(search) == T_BIGINT) {
if (!bigint_to_int64_wrapping(js, search, &needle)) return js_false;
} else needle = (int64_t)js_to_number(js, search);
int64_t *data = (int64_t *)(ta_data->buffer->data + ta_data->byte_offset);
for (size_t i = (size_t)from_index; i < len; i++) {
if (data[i] == needle) return js_true;
}
return js_false;
}
if (ta_data->type == TYPED_ARRAY_BIGUINT64) {
uint64_t needle = 0;
if (vtype(search) == T_BIGINT) {
if (!bigint_to_uint64_wrapping(js, search, &needle)) return js_false;
} else needle = (uint64_t)js_to_number(js, search);
uint64_t *data = (uint64_t *)(ta_data->buffer->data + ta_data->byte_offset);
for (size_t i = (size_t)from_index; i < len; i++) {
if (data[i] == needle) return js_true;
}
return js_false;
}
double needle = js_to_number(js, search);
for (size_t i = (size_t)from_index; i < len; i++) {
double value = 0;
if (!typedarray_read_number(ta_data, i, &value)) return js_false;
if (isnan(value) && isnan(needle)) return js_true;
if (value == needle) return js_true;
}
return js_false;
}
// Buffer.prototype.toString(encoding)
static ant_value_t js_buffer_slice(ant_t *js, ant_value_t *args, int nargs) {
return js_typedarray_subarray(js, args, nargs);
}
// Buffer.prototype.toString(encoding)
static ant_value_t js_buffer_toString(ant_t *js, ant_value_t *args, int nargs) {
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkerr(js, "Invalid Buffer");
BufferEncoding encoding = ENC_UTF8;
if (nargs > 0 && vtype(args[0]) == T_STR) {
size_t enc_len;
char *enc_str = js_getstr(js, args[0], &enc_len);
encoding = parse_encoding(enc_str, enc_len);
if (encoding == ENC_UNKNOWN) encoding = ENC_UTF8;
}
if (!ta_data->buffer || ta_data->buffer->is_detached) {
return js_mkerr(js, "Cannot read from detached buffer");
}
uint8_t *data = ta_data->buffer->data + ta_data->byte_offset;
size_t len = ta_data->byte_length;
if (encoding == ENC_BASE64) {
size_t out_len;
char *encoded = ant_base64_encode(data, len, &out_len);
if (!encoded) return js_mkerr(js, "Failed to encode base64");
ant_value_t result = js_mkstr(js, encoded, out_len);
free(encoded);
return result;
} else if (encoding == ENC_HEX) {
char *hex = malloc(len * 2 + 1);
if (!hex) return js_mkerr(js, "Failed to allocate hex string");
for (size_t i = 0; i < len; i++) {
snprintf(hex + i * 2, 3, "%02x", data[i]);
}
ant_value_t result = js_mkstr(js, hex, len * 2);
free(hex);
return result;
} else if (encoding == ENC_UCS2) {
size_t char_count = len / 2;
char *str = malloc(char_count + 1);
if (!str) return js_mkerr(js, "Failed to allocate string");
for (size_t i = 0; i < char_count; i++) str[i] = (char)data[i * 2];
str[char_count] = '\0';
ant_value_t result = js_mkstr(js, str, char_count);
free(str);
return result;
} else {
size_t out_cap = len * 3 + 1;
char *out = malloc(out_cap);
if (!out) return js_mkerr(js, "Failed to allocate string");
utf8_dec_t dec = { .bom_seen = true, .ignore_bom = true };
utf8proc_ssize_t out_len = utf8_whatwg_decode(&dec, data, len, out, false, false);
if (out_len < 0) {
free(out);
return js_mkerr(js, "Failed to decode buffer as UTF-8");
}
ant_value_t result = js_mkstr(js, out, (size_t)out_len);
free(out);
return result;
}
}
// Buffer.prototype.toBase64()
static ant_value_t js_buffer_toBase64(ant_t *js, ant_value_t *args, int nargs) {
(void)args; (void)nargs;
ant_value_t encoding_arg = js_mkstr(js, "base64", 6);
ant_value_t new_args[1] = {encoding_arg};
return js_buffer_toString(js, new_args, 1);
}
// Buffer.prototype.write(string, offset, length, encoding)
static ant_value_t js_buffer_write(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "write requires a string");
ant_value_t this_val = js_getthis(js);
TypedArrayData *ta_data = buffer_get_typedarray_data(this_val);
if (!ta_data) return js_mkerr(js, "Invalid Buffer");
size_t str_len;
char *str = js_getstr(js, args[0], &str_len);
size_t offset = 0;
size_t length = ta_data->byte_length;
if (nargs > 1 && vtype(args[1]) == T_NUM) {
offset = (size_t)js_getnum(args[1]);
}
if (nargs > 2 && vtype(args[2]) == T_NUM) {
length = (size_t)js_getnum(args[2]);
}
if (offset >= ta_data->byte_length) {
return js_mknum(0);
}
size_t available = ta_data->byte_length - offset;
size_t to_write = (str_len < length) ? str_len : length;
to_write = (to_write < available) ? to_write : available;
memcpy(ta_data->buffer->data + ta_data->byte_offset + offset, str, to_write);
return js_mknum((double)to_write);
}
static ant_value_t js_buffer_copy(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "copy requires a target buffer");
TypedArrayData *src = buffer_get_typedarray_data(js_getthis(js));
TypedArrayData *dst = buffer_get_typedarray_data(args[0]);
if (!src || !dst) return js_mkerr(js, "copy requires Buffer arguments");
size_t target_start = (nargs > 1 && vtype(args[1]) == T_NUM) ? (size_t)js_getnum(args[1]) : 0;
size_t source_start = (nargs > 2 && vtype(args[2]) == T_NUM) ? (size_t)js_getnum(args[2]) : 0;
size_t source_end = (nargs > 3 && vtype(args[3]) == T_NUM) ? (size_t)js_getnum(args[3]) : src->byte_length;
if (target_start > dst->byte_length) target_start = dst->byte_length;
if (source_start > src->byte_length) source_start = src->byte_length;
if (source_end > src->byte_length) source_end = src->byte_length;
if (source_end < source_start) source_end = source_start;
size_t src_len = source_end - source_start;
size_t dst_len = dst->byte_length - target_start;
size_t copy_len = src_len < dst_len ? src_len : dst_len;
if (copy_len == 0) return js_mknum(0);
uint8_t *src_ptr = src->buffer->data + src->byte_offset + source_start;
uint8_t *dst_ptr = dst->buffer->data + dst->byte_offset + target_start;
memmove(dst_ptr, src_ptr, copy_len);
return js_mknum((double)copy_len);
}
static ant_value_t js_buffer_writeInt16BE(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "writeInt16BE requires a value");
TypedArrayData *ta = buffer_get_typedarray_data(js_getthis(js));
if (!ta) return js_mkerr(js, "Invalid Buffer");
int16_t value = (int16_t)js_to_int32(js_getnum(args[0]));
size_t offset = (nargs > 1 && vtype(args[1]) == T_NUM) ? (size_t)js_getnum(args[1]) : 0;
if (offset + 2 > ta->byte_length) return js_mkerr(js, "Offset out of bounds");
uint8_t *ptr = ta->buffer->data + ta->byte_offset + offset;
ptr[0] = (uint8_t)((value >> 8) & 0xff);
ptr[1] = (uint8_t)(value & 0xff);
return js_mknum((double)(offset + 2));
}
static ant_value_t js_buffer_writeInt32BE(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "writeInt32BE requires a value");
TypedArrayData *ta = buffer_get_typedarray_data(js_getthis(js));
if (!ta) return js_mkerr(js, "Invalid Buffer");
int32_t value = js_to_int32(js_getnum(args[0]));
size_t offset = (nargs > 1 && vtype(args[1]) == T_NUM) ? (size_t)js_getnum(args[1]) : 0;
if (offset + 4 > ta->byte_length) return js_mkerr(js, "Offset out of bounds");
uint8_t *ptr = ta->buffer->data + ta->byte_offset + offset;
ptr[0] = (uint8_t)((value >> 24) & 0xff);
ptr[1] = (uint8_t)((value >> 16) & 0xff);
ptr[2] = (uint8_t)((value >> 8) & 0xff);
ptr[3] = (uint8_t)(value & 0xff);
return js_mknum((double)(offset + 4));
}
static ant_value_t js_buffer_writeUInt32BE(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mkerr(js, "writeUInt32BE requires a value");
TypedArrayData *ta = buffer_get_typedarray_data(js_getthis(js));
if (!ta) return js_mkerr(js, "Invalid Buffer");
uint32_t value = js_to_uint32(js_getnum(args[0]));
size_t offset = (nargs > 1 && vtype(args[1]) == T_NUM) ? (size_t)js_getnum(args[1]) : 0;
if (offset + 4 > ta->byte_length) return js_mkerr(js, "Offset out of bounds");
uint8_t *ptr = ta->buffer->data + ta->byte_offset + offset;
ptr[0] = (uint8_t)((value >> 24) & 0xff);
ptr[1] = (uint8_t)((value >> 16) & 0xff);
ptr[2] = (uint8_t)((value >> 8) & 0xff);
ptr[3] = (uint8_t)(value & 0xff);
return js_mknum((double)(offset + 4));
}
static ant_value_t js_buffer_readInt16BE(ant_t *js, ant_value_t *args, int nargs) {
TypedArrayData *ta = buffer_get_typedarray_data(js_getthis(js));
if (!ta) return js_mkerr(js, "Invalid Buffer");
size_t offset = (nargs > 0 && vtype(args[0]) == T_NUM) ? (size_t)js_getnum(args[0]) : 0;
if (offset + 2 > ta->byte_length) return js_mkerr(js, "Offset out of bounds");
uint8_t *ptr = ta->buffer->data + ta->byte_offset + offset;
int16_t value = (int16_t)((ptr[0] << 8) | ptr[1]);
return js_mknum((double)value);
}
static ant_value_t js_buffer_readInt32BE(ant_t *js, ant_value_t *args, int nargs) {
TypedArrayData *ta = buffer_get_typedarray_data(js_getthis(js));
if (!ta) return js_mkerr(js, "Invalid Buffer");
size_t offset = (nargs > 0 && vtype(args[0]) == T_NUM) ? (size_t)js_getnum(args[0]) : 0;
if (offset + 4 > ta->byte_length) return js_mkerr(js, "Offset out of bounds");
uint8_t *ptr = ta->buffer->data + ta->byte_offset + offset;
int32_t value = (int32_t)(((uint32_t)ptr[0] << 24) | ((uint32_t)ptr[1] << 16) |
((uint32_t)ptr[2] << 8) | (uint32_t)ptr[3]);
return js_mknum((double)value);
}
static ant_value_t js_buffer_readUInt32BE(ant_t *js, ant_value_t *args, int nargs) {
TypedArrayData *ta = buffer_get_typedarray_data(js_getthis(js));
if (!ta) return js_mkerr(js, "Invalid Buffer");
size_t offset = (nargs > 0 && vtype(args[0]) == T_NUM) ? (size_t)js_getnum(args[0]) : 0;
if (offset + 4 > ta->byte_length) return js_mkerr(js, "Offset out of bounds");
uint8_t *ptr = ta->buffer->data + ta->byte_offset + offset;
uint32_t value = ((uint32_t)ptr[0] << 24) | ((uint32_t)ptr[1] << 16) |
((uint32_t)ptr[2] << 8) | (uint32_t)ptr[3];
return js_mknum((double)value);
}
// Buffer.isBuffer(obj)
static ant_value_t js_buffer_isBuffer(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_false;
if (!is_special_object(args[0])) return js_false;
ant_value_t proto = js_get_proto(js, args[0]);
ant_value_t buffer_proto = js_get_ctor_proto(js, "Buffer", 6);
return js_bool(proto == buffer_proto);
}
// Buffer.isEncoding(encoding)
static ant_value_t js_buffer_isEncoding(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1 || vtype(args[0]) != T_STR) return js_false;
size_t len;
char *enc = js_getstr(js, args[0], &len);
if ((len == 4 && strncasecmp(enc, "utf8", 4) == 0) ||
(len == 5 && strncasecmp(enc, "utf-8", 5) == 0) ||
(len == 3 && strncasecmp(enc, "hex", 3) == 0) ||
(len == 6 && strncasecmp(enc, "base64", 6) == 0) ||
(len == 5 && strncasecmp(enc, "ascii", 5) == 0) ||
(len == 6 && strncasecmp(enc, "latin1", 6) == 0) ||
(len == 6 && strncasecmp(enc, "binary", 6) == 0) ||
(len == 4 && strncasecmp(enc, "ucs2", 4) == 0) ||
(len == 5 && strncasecmp(enc, "ucs-2", 5) == 0) ||
(len == 7 && strncasecmp(enc, "utf16le", 7) == 0) ||
(len == 8 && strncasecmp(enc, "utf-16le", 8) == 0)) {
return js_true;
}
return js_false;
}
// Buffer.byteLength(string, encoding)
static ant_value_t js_buffer_byteLength(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1) return js_mknum(0);
ant_value_t arg = args[0];
if (is_special_object(arg)) {
ant_value_t bytelen = js_get(js, arg, "byteLength");
if (vtype(bytelen) == T_NUM) return bytelen;
ant_value_t len = js_get(js, arg, "length");
if (vtype(len) == T_NUM) return len;
}
if (vtype(arg) == T_STR) {
size_t len;
js_getstr(js, arg, &len);
return js_mknum((double)len);
}
return js_mknum(0);
}
// Buffer.concat(list, totalLength)
static ant_value_t js_buffer_concat(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 1 || !is_special_object(args[0])) {
return js_mkerr(js, "First argument must be an array");
}
ant_value_t list = args[0];
ant_value_t len_val = js_get(js, list, "length");
if (vtype(len_val) != T_NUM) {
return js_mkerr(js, "First argument must be an array");
}
size_t list_len = (size_t)js_getnum(len_val);
size_t total_length = 0;
if (nargs > 1 && vtype(args[1]) == T_NUM) {
total_length = (size_t)js_getnum(args[1]);
} else {
for (size_t i = 0; i < list_len; i++) {
char idx[16];
snprintf(idx, sizeof(idx), "%zu", i);
ant_value_t buf = js_get(js, list, idx);
ant_value_t buf_len = js_get(js, buf, "length");
if (vtype(buf_len) == T_NUM) total_length += (size_t)js_getnum(buf_len);
}
}
ArrayBufferData *buffer = create_array_buffer_data(total_length);
if (!buffer) return js_mkerr(js, "Failed to allocate buffer");
size_t offset = 0;
for (size_t i = 0; i < list_len && offset < total_length; i++) {
char idx[16];
snprintf(idx, sizeof(idx), "%zu", i);
ant_value_t buf = js_get(js, list, idx);
TypedArrayData *ta = buffer_get_typedarray_data(buf);
if (!ta || !ta->buffer) continue;
size_t copy_len = ta->byte_length;
if (offset + copy_len > total_length) {
copy_len = total_length - offset;
}
memcpy(buffer->data + offset, ta->buffer->data + ta->byte_offset, copy_len);
offset += copy_len;
}
return create_typed_array(js, TYPED_ARRAY_UINT8, buffer, 0, total_length, "Buffer");
}
// Buffer.compare(buf1, buf2)
static ant_value_t js_buffer_compare(ant_t *js, ant_value_t *args, int nargs) {
if (nargs < 2) return js_mkerr(js, "Buffer.compare requires two arguments");
TypedArrayData *ta1 = buffer_get_typedarray_data(args[0]);
TypedArrayData *ta2 = buffer_get_typedarray_data(args[1]);
if (!ta1 || !ta2) {
return js_mkerr(js, "Arguments must be Buffers");
}
if (!ta1 || !ta1->buffer || !ta2 || !ta2->buffer) {
return js_mkerr(js, "Invalid buffer");
}
size_t len = ta1->byte_length < ta2->byte_length ? ta1->byte_length : ta2->byte_length;
int cmp = memcmp(ta1->buffer->data + ta1->byte_offset, ta2->buffer->data + ta2->byte_offset, len);
if (cmp == 0) {
if (ta1->byte_length < ta2->byte_length) cmp = -1;
else if (ta1->byte_length > ta2->byte_length) cmp = 1;
} else cmp = cmp < 0 ? -1 : 1;
return js_mknum((double)cmp);
}
static ant_value_t js_sharedarraybuffer_constructor(ant_t *js, ant_value_t *args, int nargs) {
if (vtype(js->new_target) == T_UNDEF) {
return js_mkerr_typed(js, JS_ERR_TYPE, "SharedArrayBuffer constructor requires 'new'");
}
size_t length = 0;
if (nargs > 0 && vtype(args[0]) == T_NUM) {
length = (size_t)js_getnum(args[0]);
}
ArrayBufferData *data = create_shared_array_buffer_data(length);
if (!data) {
return js_mkerr(js, "Failed to allocate SharedArrayBuffer");
}
ant_value_t obj = js_mkobj(js);
ant_value_t proto = js_get_ctor_proto(js, "SharedArrayBuffer", 17);
if (is_special_object(proto)) js_set_proto_init(obj, proto);
js_set_native_ptr(obj, data);
js_set_native_tag(obj, BUFFER_ARRAYBUFFER_NATIVE_TAG);
js_set(js, obj, "byteLength", js_mknum((double)length));
js_set_finalizer(obj, arraybuffer_finalize);
return obj;
}
static ant_value_t buffer_make_constants(ant_t *js) {
ant_value_t constants = js_newobj(js);
js_set(js, constants, "MAX_LENGTH", js_mknum(BUFFER_COMPAT_MAX_LENGTH));
js_set(js, constants, "MAX_STRING_LENGTH", js_mknum(BUFFER_COMPAT_MAX_STRING_LENGTH));
return constants;
}
ant_value_t buffer_library(ant_t *js) {
ant_value_t glob = js_glob(js);
ant_value_t lib = js_newobj(js);
js_set(js, lib, "Buffer", js_get(js, glob, "Buffer"));
js_set(js, lib, "Blob", js_get(js, glob, "Blob"));
js_set(js, lib, "File", js_get(js, glob, "File"));
js_set(js, lib, "atob", js_get(js, glob, "atob"));
js_set(js, lib, "btoa", js_get(js, glob, "btoa"));
js_set(js, lib, "constants", buffer_make_constants(js));
js_set(js, lib, "kMaxLength", js_mknum(BUFFER_COMPAT_MAX_LENGTH));
js_set(js, lib, "kStringMaxLength", js_mknum(BUFFER_COMPAT_MAX_STRING_LENGTH));
js_set(js, lib, "INSPECT_MAX_BYTES", js_mknum(BUFFER_COMPAT_INSPECT_MAX_BYTES));
return lib;
}
void init_buffer_module() {
ant_t *js = rt->js;
ant_value_t glob = js->global;
ant_value_t object_proto = js->sym.object_proto;
ant_value_t arraybuffer_ctor_obj = js_mkobj(js);
ant_value_t arraybuffer_proto = js_mkobj(js);
js_set_proto_init(arraybuffer_proto, object_proto);
js_set(js, arraybuffer_proto, "slice", js_mkfun(js_arraybuffer_slice));
js_set(js, arraybuffer_proto, "transfer", js_mkfun(js_arraybuffer_transfer));
js_set(js, arraybuffer_proto, "transferToFixedLength", js_mkfun(js_arraybuffer_transferToFixedLength));
js_set_getter_desc(js, arraybuffer_proto, "detached", 8, js_mkfun(js_arraybuffer_detached_getter), JS_DESC_E);
js_set_getter_desc(js, arraybuffer_proto, "byteLength", 10, js_mkfun(js_arraybuffer_byteLength_getter), JS_DESC_C);
js_set_sym(js, arraybuffer_proto, get_toStringTag_sym(), js_mkstr(js, "ArrayBuffer", 11));
js_set_slot(arraybuffer_ctor_obj, SLOT_CFUNC, js_mkfun(js_arraybuffer_constructor));
js_mkprop_fast(js, arraybuffer_ctor_obj, "prototype", 9, arraybuffer_proto);
js_mkprop_fast(js, arraybuffer_ctor_obj, "name", 4, ANT_STRING("ArrayBuffer"));
js_set_descriptor(js, arraybuffer_ctor_obj, "name", 4, 0);
js_set(js, arraybuffer_ctor_obj, "isView", js_mkfun(js_arraybuffer_isView));
js_define_species_getter(js, arraybuffer_ctor_obj);
ant_value_t arraybuffer_ctor = js_obj_to_func(arraybuffer_ctor_obj);
js_set(js, arraybuffer_proto, "constructor", arraybuffer_ctor);
js_set_descriptor(js, arraybuffer_proto, "constructor", 11, JS_DESC_W | JS_DESC_C);
js_set(js, glob, "ArrayBuffer", arraybuffer_ctor);
ant_value_t typedarray_proto = js_mkobj(js);
js_set_proto_init(typedarray_proto, object_proto);
js_set(js, typedarray_proto, "at", js_mkfun(js_typedarray_at));
js_set(js, typedarray_proto, "set", js_mkfun(js_typedarray_set));
js_set(js, typedarray_proto, "copyWithin", js_mkfun(js_typedarray_copyWithin));
js_set(js, typedarray_proto, "slice", js_mkfun(js_typedarray_slice));
js_set(js, typedarray_proto, "subarray", js_mkfun(js_typedarray_subarray));
js_set(js, typedarray_proto, "fill", js_mkfun(js_typedarray_fill));
js_set(js, typedarray_proto, "toReversed", js_mkfun(js_typedarray_toReversed));
js_set(js, typedarray_proto, "toSorted", js_mkfun(js_typedarray_toSorted));
js_set(js, typedarray_proto, "with", js_mkfun(js_typedarray_with));
js_set(js, typedarray_proto, "toString", js_mkfun(js_typedarray_toString));
js_set(js, typedarray_proto, "join", js_mkfun(js_typedarray_join));
js_set(js, typedarray_proto, "indexOf", js_mkfun(js_typedarray_indexOf));
js_set(js, typedarray_proto, "includes", js_mkfun(js_typedarray_includes));
js_set(js, typedarray_proto, "every", js_mkfun(js_typedarray_every));
js_set_sym(js, typedarray_proto, get_toStringTag_sym(), js_mkstr(js, "TypedArray", 10));
g_typedarray_iter_proto = js_mkobj(js);
js_set_proto_init(g_typedarray_iter_proto, js->sym.iterator_proto);
js_set(js, g_typedarray_iter_proto, "next", js_mkfun(ta_iter_next));
js_iter_register_advance(g_typedarray_iter_proto, advance_typedarray);
js_set(js, typedarray_proto, "values", js_mkfun(ta_values));
js_set(js, typedarray_proto, "keys", js_mkfun(ta_keys));
js_set(js, typedarray_proto, "entries", js_mkfun(ta_entries));
js_set_sym(js, typedarray_proto, get_iterator_sym(), js_get(js, typedarray_proto, "values"));
// TODO: find a better way of doing this, macro is code smell
#define SETUP_TYPEDARRAY(name) \
do { \
ant_value_t name##_ctor_obj = js_mkobj(js); \
ant_value_t name##_proto = js_mkobj(js); \
js_set_proto_init(name##_proto, typedarray_proto); \
js_set_sym(js, name##_proto, get_toStringTag_sym(), js_mkstr(js, #name, sizeof(#name) - 1)); \
js_set_slot(name##_ctor_obj, SLOT_CFUNC, js_mkfun(js_##name##_constructor)); \
js_setprop(js, name##_ctor_obj, js_mkstr(js, "prototype", 9), name##_proto); \
js_mkprop_fast(js, name##_ctor_obj, "name", 4, ANT_STRING(#name)); \
js_set_descriptor(js, name##_ctor_obj, "name", 4, 0); \
js_define_species_getter(js, name##_ctor_obj); \
js_set(js, name##_ctor_obj, "from", js_mkfun(js_##name##_from)); \
ant_value_t name##_ctor = js_obj_to_func(name##_ctor_obj); \
js_setprop(js, name##_proto, ANT_STRING("constructor"), name##_ctor); \
js_set_descriptor(js, name##_proto, "constructor", 11, JS_DESC_W | JS_DESC_C); \
js_set(js, glob, #name, name##_ctor); \
} while(0)
SETUP_TYPEDARRAY(Int8Array);
SETUP_TYPEDARRAY(Uint8Array);
SETUP_TYPEDARRAY(Uint8ClampedArray);
SETUP_TYPEDARRAY(Int16Array);
SETUP_TYPEDARRAY(Uint16Array);
SETUP_TYPEDARRAY(Int32Array);
SETUP_TYPEDARRAY(Uint32Array);
SETUP_TYPEDARRAY(Float16Array);
SETUP_TYPEDARRAY(Float32Array);
SETUP_TYPEDARRAY(Float64Array);
SETUP_TYPEDARRAY(BigInt64Array);
SETUP_TYPEDARRAY(BigUint64Array);
ant_value_t uint8array_codec_ctor = js_get(js, glob, "Uint8Array");
ant_value_t uint8array_codec_proto = js_get(js, uint8array_codec_ctor, "prototype");
js_set(js, uint8array_codec_ctor, "fromHex", js_mkfun(js_uint8array_fromHex));
js_set(js, uint8array_codec_ctor, "fromBase64", js_mkfun(js_uint8array_fromBase64));
js_set(js, uint8array_codec_proto, "toHex", js_mkfun(js_uint8array_toHex));
js_set(js, uint8array_codec_proto, "toBase64", js_mkfun(js_uint8array_toBase64));
js_set(js, uint8array_codec_proto, "setFromHex", js_mkfun(js_uint8array_setFromHex));
js_set(js, uint8array_codec_proto, "setFromBase64", js_mkfun(js_uint8array_setFromBase64));
ant_value_t dataview_ctor_obj = js_mkobj(js);
ant_value_t dataview_proto = js_mkobj(js);
js_set_proto_init(dataview_proto, object_proto);
js_set(js, dataview_proto, "getInt8", js_mkfun(js_dataview_getInt8));
js_set(js, dataview_proto, "setInt8", js_mkfun(js_dataview_setInt8));
js_set(js, dataview_proto, "getUint8", js_mkfun(js_dataview_getUint8));
js_set(js, dataview_proto, "setUint8", js_mkfun(js_dataview_setUint8));
js_set(js, dataview_proto, "getInt16", js_mkfun(js_dataview_getInt16));
js_set(js, dataview_proto, "setInt16", js_mkfun(js_dataview_setInt16));
js_set(js, dataview_proto, "getUint16", js_mkfun(js_dataview_getUint16));
js_set(js, dataview_proto, "setUint16", js_mkfun(js_dataview_setUint16));
js_set(js, dataview_proto, "getInt32", js_mkfun(js_dataview_getInt32));
js_set(js, dataview_proto, "setInt32", js_mkfun(js_dataview_setInt32));
js_set(js, dataview_proto, "getUint32", js_mkfun(js_dataview_getUint32));
js_set(js, dataview_proto, "setUint32", js_mkfun(js_dataview_setUint32));
js_set(js, dataview_proto, "getFloat32", js_mkfun(js_dataview_getFloat32));
js_set(js, dataview_proto, "setFloat32", js_mkfun(js_dataview_setFloat32));
js_set(js, dataview_proto, "getFloat64", js_mkfun(js_dataview_getFloat64));
js_set(js, dataview_proto, "setFloat64", js_mkfun(js_dataview_setFloat64));
js_set(js, dataview_proto, "getBigInt64", js_mkfun(js_dataview_getBigInt64));
js_set(js, dataview_proto, "setBigInt64", js_mkfun(js_dataview_setBigInt64));
js_set(js, dataview_proto, "getBigUint64", js_mkfun(js_dataview_getBigUint64));
js_set(js, dataview_proto, "setBigUint64", js_mkfun(js_dataview_setBigUint64));
js_set_sym(js, dataview_proto, get_toStringTag_sym(), js_mkstr(js, "DataView", 8));
js_set_slot(dataview_ctor_obj, SLOT_CFUNC, js_mkfun(js_dataview_constructor));
js_mkprop_fast(js, dataview_ctor_obj, "prototype", 9, dataview_proto);
js_mkprop_fast(js, dataview_ctor_obj, "name", 4, ANT_STRING("DataView"));
js_set_descriptor(js, dataview_ctor_obj, "name", 4, 0);
ant_value_t dataview_ctor = js_obj_to_func(dataview_ctor_obj);
js_set(js, dataview_proto, "constructor", dataview_ctor);
js_set_descriptor(js, dataview_proto, "constructor", 11, JS_DESC_W | JS_DESC_C);
js_set(js, glob, "DataView", dataview_ctor);
ant_value_t sharedarraybuffer_ctor_obj = js_mkobj(js);
ant_value_t sharedarraybuffer_proto = js_mkobj(js);
js_set_proto_init(sharedarraybuffer_proto, object_proto);
js_set(js, sharedarraybuffer_proto, "slice", js_mkfun(js_arraybuffer_slice));
js_set_getter_desc(js, sharedarraybuffer_proto, "byteLength", 10, js_mkfun(js_arraybuffer_byteLength_getter), JS_DESC_C);
js_set_sym(js, sharedarraybuffer_proto, get_toStringTag_sym(), js_mkstr(js, "SharedArrayBuffer", 17));
js_set_slot(sharedarraybuffer_ctor_obj, SLOT_CFUNC, js_mkfun(js_sharedarraybuffer_constructor));
js_mkprop_fast(js, sharedarraybuffer_ctor_obj, "prototype", 9, sharedarraybuffer_proto);
js_mkprop_fast(js, sharedarraybuffer_ctor_obj, "name", 4, ANT_STRING("SharedArrayBuffer"));
js_set_descriptor(js, sharedarraybuffer_ctor_obj, "name", 4, 0);
js_define_species_getter(js, sharedarraybuffer_ctor_obj);
ant_value_t sharedarraybuffer_ctor = js_obj_to_func(sharedarraybuffer_ctor_obj);
js_set(js, sharedarraybuffer_proto, "constructor", sharedarraybuffer_ctor);
js_set_descriptor(js, sharedarraybuffer_proto, "constructor", 11, JS_DESC_W | JS_DESC_C);
js_set(js, glob, "SharedArrayBuffer", sharedarraybuffer_ctor);
ant_value_t buffer_ctor_obj = js_mkobj(js);
ant_value_t buffer_proto = js_mkobj(js);
ant_value_t uint8array_ctor = js_get(js, glob, "Uint8Array");
ant_value_t uint8array_proto = js_get(js, uint8array_ctor, "prototype");
if (is_special_object(uint8array_proto)) js_set_proto_init(buffer_proto, uint8array_proto);
else js_set_proto_init(buffer_proto, typedarray_proto);
js_set(js, buffer_proto, "slice", js_mkfun(js_buffer_slice));
js_set(js, buffer_proto, "toString", js_mkfun(js_buffer_toString));
js_set(js, buffer_proto, "toBase64", js_mkfun(js_buffer_toBase64));
js_set(js, buffer_proto, "write", js_mkfun(js_buffer_write));
js_set(js, buffer_proto, "copy", js_mkfun(js_buffer_copy));
js_set(js, buffer_proto, "writeInt16BE", js_mkfun(js_buffer_writeInt16BE));
js_set(js, buffer_proto, "writeInt32BE", js_mkfun(js_buffer_writeInt32BE));
js_set(js, buffer_proto, "writeUInt32BE", js_mkfun(js_buffer_writeUInt32BE));
js_set(js, buffer_proto, "readInt16BE", js_mkfun(js_buffer_readInt16BE));
js_set(js, buffer_proto, "readInt32BE", js_mkfun(js_buffer_readInt32BE));
js_set(js, buffer_proto, "readUInt32BE", js_mkfun(js_buffer_readUInt32BE));
js_set_sym(js, buffer_proto, get_toStringTag_sym(), js_mkstr(js, "Buffer", 6));
js_set(js, buffer_proto, "values", js_get(js, typedarray_proto, "values"));
js_set_sym(js, buffer_proto, get_iterator_sym(), js_get(js, buffer_proto, "values"));
js_set(js, buffer_ctor_obj, "from", js_mkfun(js_buffer_from));
js_set(js, buffer_ctor_obj, "alloc", js_mkfun(js_buffer_alloc));
js_set(js, buffer_ctor_obj, "allocUnsafe", js_mkfun(js_buffer_allocUnsafe));
js_set(js, buffer_ctor_obj, "isBuffer", js_mkfun(js_buffer_isBuffer));
js_set(js, buffer_ctor_obj, "isEncoding", js_mkfun(js_buffer_isEncoding));
js_set(js, buffer_ctor_obj, "byteLength", js_mkfun(js_buffer_byteLength));
js_set(js, buffer_ctor_obj, "concat", js_mkfun(js_buffer_concat));
js_set(js, buffer_ctor_obj, "compare", js_mkfun(js_buffer_compare));
js_set_slot(buffer_ctor_obj, SLOT_CFUNC, js_mkfun(js_buffer_from));
js_mkprop_fast(js, buffer_ctor_obj, "prototype", 9, buffer_proto);
js_mkprop_fast(js, buffer_ctor_obj, "name", 4, ANT_STRING("Buffer"));
js_set_descriptor(js, buffer_ctor_obj, "name", 4, 0);
ant_value_t buffer_ctor = js_obj_to_func(buffer_ctor_obj);
js_set(js, buffer_proto, "constructor", buffer_ctor);
js_set_descriptor(js, buffer_proto, "constructor", 11, JS_DESC_W | JS_DESC_C);
js_set(js, glob, "Buffer", buffer_ctor);
}
void cleanup_buffer_module(void) {
if (buffer_registry) {
for (size_t i = 0; i < buffer_registry_count; i++) {
if (buffer_registry[i]) free(buffer_registry[i]);
}
free(buffer_registry);
buffer_registry = NULL;
buffer_registry_count = 0;
buffer_registry_cap = 0;
}
ta_metadata_bytes = 0;
}
size_t buffer_get_external_memory(void) {
size_t total = ta_metadata_bytes;
for (size_t i = 0; i < buffer_registry_count; i++) {
if (buffer_registry[i])
total += sizeof(ArrayBufferData) + buffer_registry[i]->capacity;
}
total += buffer_registry_cap * sizeof(ArrayBufferData *);
return total;
}

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