use std::convert::TryInto;
use std::ffi::c_void;
use crate::support::int;
use crate::ArrayBuffer;
use crate::ArrayBufferView;
use crate::HandleScope;
use crate::Local;
extern "C" {
fn v8__ArrayBufferView__Buffer(
this: *const ArrayBufferView,
) -> *const ArrayBuffer;
fn v8__ArrayBufferView__ByteLength(this: *const ArrayBufferView) -> usize;
fn v8__ArrayBufferView__ByteOffset(this: *const ArrayBufferView) -> usize;
fn v8__ArrayBufferView__CopyContents(
this: *const ArrayBufferView,
dest: *mut c_void,
byte_length: int,
) -> usize;
}
impl ArrayBufferView {
pub fn buffer<'s>(
&self,
scope: &mut HandleScope<'s>,
) -> Option<Local<'s, ArrayBuffer>> {
unsafe { scope.cast_local(|_| v8__ArrayBufferView__Buffer(self)) }
}
pub fn byte_length(&self) -> usize {
unsafe { v8__ArrayBufferView__ByteLength(self) }
}
pub fn byte_offset(&self) -> usize {
unsafe { v8__ArrayBufferView__ByteOffset(self) }
}
pub fn copy_contents(&self, dest: &mut [u8]) -> usize {
unsafe {
v8__ArrayBufferView__CopyContents(
self,
dest.as_mut_ptr() as *mut c_void,
dest.len().try_into().unwrap(),
)
}
}
}