mirror of
https://github.com/RGBCube/serenity
synced 2025-07-26 06:17:34 +00:00
LibJS: Add all of the DataView.prototype.set* methods
This commit is contained in:
parent
c54b9a6920
commit
d7a70eb77c
8 changed files with 203 additions and 0 deletions
|
@ -40,6 +40,8 @@ public:
|
|||
};
|
||||
template<typename type>
|
||||
Value get_value(size_t byte_index, bool is_typed_array, Order, bool is_little_endian = true);
|
||||
template<typename type>
|
||||
Value set_value(size_t byte_index, Value value, bool is_typed_array, Order, bool is_little_endian = true);
|
||||
|
||||
private:
|
||||
virtual void visit_edges(Visitor&) override;
|
||||
|
@ -108,4 +110,59 @@ Value ArrayBuffer::get_value(size_t byte_index, [[maybe_unused]] bool is_typed_a
|
|||
return raw_bytes_to_numeric<T>(global_object(), move(raw_value), is_little_endian);
|
||||
}
|
||||
|
||||
// 25.1.2.11 NumericToRawBytes ( type, value, isLittleEndian ), https://tc39.es/ecma262/#sec-numerictorawbytes
|
||||
template<typename T>
|
||||
static ByteBuffer numeric_to_raw_bytes(GlobalObject& global_object, Value value, bool is_little_endian)
|
||||
{
|
||||
ByteBuffer raw_bytes = ByteBuffer::create_uninitialized(sizeof(T));
|
||||
auto flip_if_needed = [&]() {
|
||||
if (is_little_endian)
|
||||
return;
|
||||
VERIFY(sizeof(T) % 2 == 0);
|
||||
for (size_t i = 0; i < sizeof(T) / 2; ++i)
|
||||
swap(raw_bytes[i], raw_bytes[sizeof(T) - 1 - i]);
|
||||
};
|
||||
if constexpr (IsSame<T, float>) {
|
||||
float raw_value = value.to_double(global_object);
|
||||
ReadonlyBytes { &raw_value, sizeof(float) }.copy_to(raw_bytes);
|
||||
flip_if_needed();
|
||||
return raw_bytes;
|
||||
}
|
||||
if constexpr (IsSame<T, double>) {
|
||||
double raw_value = value.to_double(global_object);
|
||||
ReadonlyBytes { &raw_value, sizeof(double) }.copy_to(raw_bytes);
|
||||
flip_if_needed();
|
||||
return raw_bytes;
|
||||
}
|
||||
if constexpr (!IsIntegral<T>)
|
||||
VERIFY_NOT_REACHED();
|
||||
if constexpr (sizeof(T) == 8) {
|
||||
u64 int_value = value.as_bigint().big_integer().to_u64();
|
||||
ReadonlyBytes { &int_value, sizeof(u64) }.copy_to(raw_bytes);
|
||||
flip_if_needed();
|
||||
return raw_bytes;
|
||||
} else {
|
||||
T int_value;
|
||||
if constexpr (IsSigned<T>)
|
||||
int_value = value.to_i32(global_object);
|
||||
else
|
||||
int_value = value.to_u32(global_object);
|
||||
ReadonlyBytes { &int_value, sizeof(T) }.copy_to(raw_bytes);
|
||||
flip_if_needed();
|
||||
return raw_bytes;
|
||||
}
|
||||
}
|
||||
|
||||
// 25.1.2.12 SetValueInBuffer ( arrayBuffer, byteIndex, type, value, isTypedArray, order [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-setvalueinbuffer
|
||||
template<typename T>
|
||||
Value ArrayBuffer::set_value(size_t byte_index, Value value, [[maybe_unused]] bool is_typed_array, Order, bool is_little_endian)
|
||||
{
|
||||
auto raw_bytes = numeric_to_raw_bytes<T>(global_object(), value, is_little_endian);
|
||||
|
||||
// FIXME: Check for shared buffer
|
||||
|
||||
raw_bytes.span().copy_to(buffer_impl().span().slice(byte_index));
|
||||
return js_undefined();
|
||||
}
|
||||
|
||||
}
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue