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Refactor if let Some(a) { Some(b) } else { None }

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Prefer `Option::map` instead.
This commit is contained in:
Emilio Cobos Álvarez 2015-09-25 16:29:23 +02:00
parent 5d7d745ab4
commit d12dbf94f2
1 changed files with 12 additions and 18 deletions
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30
components/script/dom/htmlcanvaselement.rs
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@ -114,27 +114,23 @@ impl LayoutHTMLCanvasElementHelpers for LayoutJS<HTMLCanvasElement> {
#[allow(unsafe_code)]
unsafe fn get_renderer_id(&self) -> Option<usize> {
let ref canvas = *self.unsafe_get();
if let Some(context) = canvas.context.get() {
canvas.context.get().map(|context| {
match context {
CanvasContext::Context2d(context) => Some(context.to_layout().get_renderer_id()),
CanvasContext::WebGL(context) => Some(context.to_layout().get_renderer_id()),
CanvasContext::Context2d(context) => context.to_layout().get_renderer_id(),
CanvasContext::WebGL(context) => context.to_layout().get_renderer_id(),
}
} else {
None
}
})
}
#[allow(unsafe_code)]
unsafe fn get_ipc_renderer(&self) -> Option<IpcSender<CanvasMsg>> {
let ref canvas = *self.unsafe_get();
if let Some(context) = canvas.context.get() {
canvas.context.get().map(|context| {
match context {
CanvasContext::Context2d(context) => Some(context.to_layout().get_ipc_renderer()),
CanvasContext::WebGL(context) => Some(context.to_layout().get_ipc_renderer()),
CanvasContext::Context2d(context) => context.to_layout().get_ipc_renderer(),
CanvasContext::WebGL(context) => context.to_layout().get_ipc_renderer(),
}
} else {
None
}
})
}
#[allow(unsafe_code)]
@ -151,14 +147,12 @@ impl LayoutHTMLCanvasElementHelpers for LayoutJS<HTMLCanvasElement> {
impl HTMLCanvasElement {
pub fn ipc_renderer(&self) -> Option<IpcSender<CanvasMsg>> {
if let Some(context) = self.context.get() {
self.context.get().map(|context| {
match context {
CanvasContext::Context2d(context) => Some(context.root().r().ipc_renderer()),
CanvasContext::WebGL(context) => Some(context.root().r().ipc_renderer()),
CanvasContext::Context2d(context) => context.root().r().ipc_renderer(),
CanvasContext::WebGL(context) => context.root().r().ipc_renderer(),
}
} else {
None
}
})
}
pub fn get_or_init_2d_context(&self) -> Option<Root<CanvasRenderingContext2D>> {