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Replace the FooCast traits by structs.

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This should allow us to remove most type annotations in the DOM.
This commit is contained in:
Ms2ger 2015-02-16 00:01:53 +01:00
parent c54e79b2f2
commit 0e11178d66
1 changed files with 11 additions and 11 deletions
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22
components/script/dom/bindings/codegen/CodegenRust.py
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@ -5254,9 +5254,10 @@ impl ${selfName} for ${baseName} {
derived += [CGGeneric('\n')] derived += [CGGeneric('\n')]
cast = [CGGeneric(string.Template("""\ cast = [CGGeneric(string.Template("""\
pub trait ${castTraitName} : Sized { pub struct ${name}Cast;
impl ${name}Cast {
#[inline(always)] #[inline(always)]
fn to_ref<'a, T: ${toBound}+Reflectable>(base: JSRef<'a, T>) -> Option<JSRef<'a, Self>> { pub fn to_ref<'a, T: ${toBound}+Reflectable>(base: JSRef<'a, T>) -> Option<JSRef<'a, ${name}>> {
match base.${checkFn}() { match base.${checkFn}() {
true => unsafe { Some(base.transmute()) }, true => unsafe { Some(base.transmute()) },
false => None false => None
@ -5264,7 +5265,7 @@ pub trait ${castTraitName} : Sized {
} }
#[inline(always)] #[inline(always)]
fn to_borrowed_ref<'a, 'b, T: ${toBound}+Reflectable>(base: &'a JSRef<'b, T>) -> Option<&'a JSRef<'b, Self>> { pub fn to_borrowed_ref<'a, 'b, T: ${toBound}+Reflectable>(base: &'a JSRef<'b, T>) -> Option<&'a JSRef<'b, ${name}>> {
match base.${checkFn}() { match base.${checkFn}() {
true => unsafe { Some(base.transmute_borrowed()) }, true => unsafe { Some(base.transmute_borrowed()) },
false => None false => None
@ -5273,7 +5274,7 @@ pub trait ${castTraitName} : Sized {
#[inline(always)] #[inline(always)]
#[allow(unrooted_must_root)] #[allow(unrooted_must_root)]
fn to_layout_js<T: ${toBound}+Reflectable>(base: &LayoutJS<T>) -> Option<LayoutJS<Self>> { pub fn to_layout_js<T: ${toBound}+Reflectable>(base: &LayoutJS<T>) -> Option<LayoutJS<${name}>> {
unsafe { unsafe {
match (*base.unsafe_get()).${checkFn}() { match (*base.unsafe_get()).${checkFn}() {
true => Some(base.transmute_copy()), true => Some(base.transmute_copy()),
@ -5283,30 +5284,29 @@ pub trait ${castTraitName} : Sized {
} }
#[inline(always)] #[inline(always)]
fn from_ref<'a, T: ${fromBound}+Reflectable>(derived: JSRef<'a, T>) -> JSRef<'a, Self> { pub fn from_ref<'a, T: ${fromBound}+Reflectable>(derived: JSRef<'a, T>) -> JSRef<'a, ${name}> {
unsafe { derived.transmute() } unsafe { derived.transmute() }
} }
#[inline(always)] #[inline(always)]
fn from_borrowed_ref<'a, 'b, T: ${fromBound}+Reflectable>(derived: &'a JSRef<'b, T>) -> &'a JSRef<'b, Self> { pub fn from_borrowed_ref<'a, 'b, T: ${fromBound}+Reflectable>(derived: &'a JSRef<'b, T>) -> &'a JSRef<'b, ${name}> {
unsafe { derived.transmute_borrowed() } unsafe { derived.transmute_borrowed() }
} }
#[inline(always)] #[inline(always)]
fn from_temporary<T: ${fromBound}+Reflectable>(derived: Temporary<T>) -> Temporary<Self> { pub fn from_temporary<T: ${fromBound}+Reflectable>(derived: Temporary<T>) -> Temporary<${name}> {
unsafe { derived.transmute() } unsafe { derived.transmute() }
} }
#[inline(always)] #[inline(always)]
fn from_actual<'a, T: ${fromBound}+Reflectable>(derived: &T) -> &'a Self { pub fn from_actual<'a, T: ${fromBound}+Reflectable>(derived: &T) -> &'a ${name} {
unsafe { mem::transmute(derived) } unsafe { mem::transmute(derived) }
} }
} }
""").substitute({'checkFn': 'is_' + name.lower(), """).substitute({'checkFn': 'is_' + name.lower(),
'castTraitName': name + 'Cast', 'name': name,
'fromBound': name + 'Base', 'fromBound': name + 'Base',
'toBound': name + 'Derived'})), 'toBound': name + 'Derived'}))]
CGGeneric("impl %s for %s {}\n\n" % (name + 'Cast', name))]
allprotos += protos + derived + cast allprotos += protos + derived + cast