foster/denoland-rusty-v8
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polish

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This commit is contained in:
Bert Belder 2019-10-08 02:37:30 +02:00
parent 1b61d2c4da
commit 5931696251
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GPG key ID: 7A77887B2E2ED461
1 changed files with 24 additions and 21 deletions
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45
src/main.rs
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@ -14,7 +14,7 @@ mod channel {
// Constructs a special class derived from Channel that forwards all
// virtual method invocations to rust. It is assumed that this subclass
// has the same size and memory layout as the class it's deriving from.
fn Channel__OVERRIDE__CTOR(this: &mut std::mem::MaybeUninit<Channel>)
fn Channel__EXTENDER__CTOR(this: &mut std::mem::MaybeUninit<Channel>)
-> ();
}
@ -88,24 +88,27 @@ mod channel {
rust_vtable: util::RustVTable<&'static dyn ChannelOverrides>,
}
#[no_mangle]
unsafe extern "C" fn Channel__OVERRIDE__method1__DISPATCH(
this: &mut Channel,
) {
ChannelExtender::dispatch_mut(this).method1()
}
#[no_mangle]
unsafe extern "C" fn Channel__OVERRIDE__method2__DISPATCH(
this: &Channel,
) -> i32 {
ChannelExtender::dispatch(this).method2()
}
impl ChannelExtender {
#[allow(non_snake_case)]
#[no_mangle]
unsafe extern "C" fn Channel__EXTENDER__method1__DISPATCH(
this: &mut Channel,
) {
ChannelExtender::dispatch_mut(this).method1()
}
#[allow(non_snake_case)]
#[no_mangle]
unsafe extern "C" fn Channel__EXTENDER__method2__DISPATCH(
this: &Channel,
) -> i32 {
ChannelExtender::dispatch(this).method2()
}
fn construct_cxx_channel() -> Channel {
unsafe {
let mut buf = std::mem::MaybeUninit::<Channel>::uninit();
Channel__OVERRIDE__CTOR(&mut buf);
Channel__EXTENDER__CTOR(&mut buf);
buf.assume_init()
}
}
@ -144,27 +147,27 @@ mod channel {
}
}
fn channel_offset() -> util::FieldOffset<Self, Channel> {
fn get_channel_offset() -> util::FieldOffset<Self, Channel> {
let buf = std::mem::MaybeUninit::<Self>::uninit();
util::FieldOffset::from_ptrs(buf.as_ptr(), unsafe {
&(*buf.as_ptr()).cxx_channel
})
}
fn embedder_offset(&self) -> util::FieldOffset<util::Opaque, Self> {
fn get_embedder_offset(&self) -> util::FieldOffset<util::Opaque, Self> {
util::FieldOffset::<util::Opaque, Self>::from_offset(self.extender_offset)
}
unsafe fn dispatch(channel: &Channel) -> &dyn ChannelOverrides {
let this = Self::channel_offset().to_outer(channel);
let embedder = this.embedder_offset().to_outer(this);
let this = Self::get_channel_offset().to_outer(channel);
let embedder = this.get_embedder_offset().to_outer(this);
std::mem::transmute((embedder, this.rust_vtable))
}
unsafe fn dispatch_mut(channel: &mut Channel) -> &mut dyn ChannelOverrides {
let this = Self::channel_offset().to_outer_mut(channel);
let this = Self::get_channel_offset().to_outer_mut(channel);
let vtable = this.rust_vtable;
let embedder = this.embedder_offset().to_outer_mut(this);
let embedder = this.get_embedder_offset().to_outer_mut(this);
std::mem::transmute((embedder, vtable))
}
}