pub struct RuntimeError { /* private fields */ }
Expand description
The WebAssembly.RuntimeError()
constructor creates a new WebAssembly
RuntimeError
object — the type that is thrown whenever WebAssembly
specifies a trap.
Implementations§
source§impl RuntimeError
impl RuntimeError
sourcepub fn new(message: &str) -> RuntimeError
pub fn new(message: &str) -> RuntimeError
The WebAssembly.RuntimeError()
constructor creates a new WebAssembly
RuntimeError
object — the type that is thrown whenever WebAssembly
specifies a trap.
Methods from Deref<Target = Error>§
sourcepub fn cause(&self) -> JsValue
pub fn cause(&self) -> JsValue
The cause property is the underlying cause of the error. Usually this is used to add context to re-thrown errors.
pub fn set_cause(&self, cause: &JsValue)
sourcepub fn message(&self) -> JsString
pub fn message(&self) -> JsString
The message property is a human-readable description of the error.
pub fn set_message(&self, message: &str)
sourcepub fn name(&self) -> JsString
pub fn name(&self) -> JsString
The name property represents a name for the type of error. The initial value is “Error”.
pub fn set_name(&self, name: &str)
Methods from Deref<Target = Object>§
sourcepub fn constructor(&self) -> Function
pub fn constructor(&self) -> Function
The constructor property returns a reference to the Object
constructor
function that created the instance object.
sourcepub fn has_own_property(&self, property: &JsValue) -> bool
pub fn has_own_property(&self, property: &JsValue) -> bool
The hasOwnProperty()
method returns a boolean indicating whether the
object has the specified property as its own property (as opposed to
inheriting it).
sourcepub fn is_prototype_of(&self, value: &JsValue) -> bool
pub fn is_prototype_of(&self, value: &JsValue) -> bool
The isPrototypeOf()
method checks if an object exists in another
object’s prototype chain.
sourcepub fn property_is_enumerable(&self, property: &JsValue) -> bool
pub fn property_is_enumerable(&self, property: &JsValue) -> bool
The propertyIsEnumerable()
method returns a Boolean indicating
whether the specified property is enumerable.
sourcepub fn to_locale_string(&self) -> JsString
pub fn to_locale_string(&self) -> JsString
The toLocaleString()
method returns a string representing the object.
This method is meant to be overridden by derived objects for
locale-specific purposes.
sourcepub fn to_string(&self) -> JsString
pub fn to_string(&self) -> JsString
The toString()
method returns a string representing the object.
Methods from Deref<Target = JsValue>§
pub const NULL: JsValue = _
pub const UNDEFINED: JsValue = _
pub const TRUE: JsValue = _
pub const FALSE: JsValue = _
sourcepub fn as_f64(&self) -> Option<f64>
pub fn as_f64(&self) -> Option<f64>
Returns the f64
value of this JS value if it’s an instance of a
number.
If this JS value is not an instance of a number then this returns
None
.
sourcepub fn as_string(&self) -> Option<String>
pub fn as_string(&self) -> Option<String>
If this JS value is a string value, this function copies the JS string
value into Wasm linear memory, encoded as UTF-8, and returns it as a
Rust String
.
To avoid the copying and re-encoding, consider the
JsString::try_from()
function from js-sys
instead.
If this JS value is not an instance of a string or if it’s not valid
utf-8 then this returns None
.
§UTF-16 vs UTF-8
JavaScript strings in general are encoded as UTF-16, but Rust strings
are encoded as UTF-8. This can cause the Rust string to look a bit
different than the JS string sometimes. For more details see the
documentation about the str
type which contains a few
caveats about the encodings.
sourcepub fn as_bool(&self) -> Option<bool>
pub fn as_bool(&self) -> Option<bool>
Returns the bool
value of this JS value if it’s an instance of a
boolean.
If this JS value is not an instance of a boolean then this returns
None
.
sourcepub fn is_undefined(&self) -> bool
pub fn is_undefined(&self) -> bool
Tests whether this JS value is undefined
sourcepub fn is_function(&self) -> bool
pub fn is_function(&self) -> bool
Tests whether the type of this JS value is function
.
sourcepub fn js_in(&self, obj: &JsValue) -> bool
pub fn js_in(&self, obj: &JsValue) -> bool
Applies the binary in
JS operator on the two JsValue
s.
sourcepub fn loose_eq(&self, other: &JsValue) -> bool
pub fn loose_eq(&self, other: &JsValue) -> bool
Compare two JsValue
s for equality, using the ==
operator in JS.
sourcepub fn unsigned_shr(&self, rhs: &JsValue) -> u32
pub fn unsigned_shr(&self, rhs: &JsValue) -> u32
Applies the binary >>>
JS operator on the two JsValue
s.
sourcepub fn checked_div(&self, rhs: &JsValue) -> JsValue
pub fn checked_div(&self, rhs: &JsValue) -> JsValue
Applies the binary /
JS operator on two JsValue
s, catching and returning any RangeError
thrown.
sourcepub fn pow(&self, rhs: &JsValue) -> JsValue
pub fn pow(&self, rhs: &JsValue) -> JsValue
Applies the binary **
JS operator on the two JsValue
s.
sourcepub fn lt(&self, other: &JsValue) -> bool
pub fn lt(&self, other: &JsValue) -> bool
Applies the binary <
JS operator on the two JsValue
s.
sourcepub fn le(&self, other: &JsValue) -> bool
pub fn le(&self, other: &JsValue) -> bool
Applies the binary <=
JS operator on the two JsValue
s.
sourcepub fn ge(&self, other: &JsValue) -> bool
pub fn ge(&self, other: &JsValue) -> bool
Applies the binary >=
JS operator on the two JsValue
s.
sourcepub fn gt(&self, other: &JsValue) -> bool
pub fn gt(&self, other: &JsValue) -> bool
Applies the binary >
JS operator on the two JsValue
s.
sourcepub fn unchecked_into_f64(&self) -> f64
pub fn unchecked_into_f64(&self) -> f64
Applies the unary +
JS operator on a JsValue
. Can throw.
Trait Implementations§
source§impl AsRef<Error> for RuntimeError
impl AsRef<Error> for RuntimeError
source§impl AsRef<JsValue> for RuntimeError
impl AsRef<JsValue> for RuntimeError
source§impl AsRef<RuntimeError> for RuntimeError
impl AsRef<RuntimeError> for RuntimeError
source§fn as_ref(&self) -> &RuntimeError
fn as_ref(&self) -> &RuntimeError
source§impl Clone for RuntimeError
impl Clone for RuntimeError
source§fn clone(&self) -> RuntimeError
fn clone(&self) -> RuntimeError
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for RuntimeError
impl Debug for RuntimeError
source§impl Deref for RuntimeError
impl Deref for RuntimeError
source§impl From<JsValue> for RuntimeError
impl From<JsValue> for RuntimeError
source§fn from(obj: JsValue) -> RuntimeError
fn from(obj: JsValue) -> RuntimeError
source§impl From<RuntimeError> for Error
impl From<RuntimeError> for Error
source§fn from(obj: RuntimeError) -> Error
fn from(obj: RuntimeError) -> Error
source§impl From<RuntimeError> for JsValue
impl From<RuntimeError> for JsValue
source§fn from(obj: RuntimeError) -> JsValue
fn from(obj: RuntimeError) -> JsValue
source§impl FromWasmAbi for RuntimeError
impl FromWasmAbi for RuntimeError
source§type Abi = <JsValue as FromWasmAbi>::Abi
type Abi = <JsValue as FromWasmAbi>::Abi
source§unsafe fn from_abi(js: <RuntimeError as FromWasmAbi>::Abi) -> RuntimeError
unsafe fn from_abi(js: <RuntimeError as FromWasmAbi>::Abi) -> RuntimeError
source§impl<'a> IntoWasmAbi for &'a RuntimeError
impl<'a> IntoWasmAbi for &'a RuntimeError
source§type Abi = <&'a JsValue as IntoWasmAbi>::Abi
type Abi = <&'a JsValue as IntoWasmAbi>::Abi
source§fn into_abi(self) -> <&'a RuntimeError as IntoWasmAbi>::Abi
fn into_abi(self) -> <&'a RuntimeError as IntoWasmAbi>::Abi
self
into Self::Abi
so that it can be sent across the wasm
ABI boundary.source§impl IntoWasmAbi for RuntimeError
impl IntoWasmAbi for RuntimeError
source§type Abi = <JsValue as IntoWasmAbi>::Abi
type Abi = <JsValue as IntoWasmAbi>::Abi
source§fn into_abi(self) -> <RuntimeError as IntoWasmAbi>::Abi
fn into_abi(self) -> <RuntimeError as IntoWasmAbi>::Abi
self
into Self::Abi
so that it can be sent across the wasm
ABI boundary.source§impl JsCast for RuntimeError
impl JsCast for RuntimeError
source§fn instanceof(val: &JsValue) -> bool
fn instanceof(val: &JsValue) -> bool
instanceof
check to see whether the JsValue
provided is an instance of this type. Read moresource§fn unchecked_from_js(val: JsValue) -> RuntimeError
fn unchecked_from_js(val: JsValue) -> RuntimeError
source§fn unchecked_from_js_ref(val: &JsValue) -> &RuntimeError
fn unchecked_from_js_ref(val: &JsValue) -> &RuntimeError
source§fn has_type<T>(&self) -> boolwhere
T: JsCast,
fn has_type<T>(&self) -> boolwhere
T: JsCast,
T
. Read moresource§fn dyn_into<T>(self) -> Result<T, Self>where
T: JsCast,
fn dyn_into<T>(self) -> Result<T, Self>where
T: JsCast,
T
. Read moresource§fn dyn_ref<T>(&self) -> Option<&T>where
T: JsCast,
fn dyn_ref<T>(&self) -> Option<&T>where
T: JsCast,
T
. Read moresource§fn unchecked_into<T>(self) -> Twhere
T: JsCast,
fn unchecked_into<T>(self) -> Twhere
T: JsCast,
source§fn unchecked_ref<T>(&self) -> &Twhere
T: JsCast,
fn unchecked_ref<T>(&self) -> &Twhere
T: JsCast,
source§impl LongRefFromWasmAbi for RuntimeError
impl LongRefFromWasmAbi for RuntimeError
source§type Anchor = RuntimeError
type Anchor = RuntimeError
RefFromWasmAbi::Anchor
source§unsafe fn long_ref_from_abi(
js: <RuntimeError as LongRefFromWasmAbi>::Abi,
) -> <RuntimeError as LongRefFromWasmAbi>::Anchor
unsafe fn long_ref_from_abi( js: <RuntimeError as LongRefFromWasmAbi>::Abi, ) -> <RuntimeError as LongRefFromWasmAbi>::Anchor
RefFromWasmAbi::ref_from_abi
source§impl OptionFromWasmAbi for RuntimeError
impl OptionFromWasmAbi for RuntimeError
source§fn is_none(abi: &<RuntimeError as FromWasmAbi>::Abi) -> bool
fn is_none(abi: &<RuntimeError as FromWasmAbi>::Abi) -> bool
None
, and otherwise it will be passed to
FromWasmAbi
.source§impl<'a> OptionIntoWasmAbi for &'a RuntimeError
impl<'a> OptionIntoWasmAbi for &'a RuntimeError
source§fn none() -> <&'a RuntimeError as IntoWasmAbi>::Abi
fn none() -> <&'a RuntimeError as IntoWasmAbi>::Abi
None
branch of this option. Read moresource§impl OptionIntoWasmAbi for RuntimeError
impl OptionIntoWasmAbi for RuntimeError
source§fn none() -> <RuntimeError as IntoWasmAbi>::Abi
fn none() -> <RuntimeError as IntoWasmAbi>::Abi
None
branch of this option. Read moresource§impl PartialEq for RuntimeError
impl PartialEq for RuntimeError
source§impl RefFromWasmAbi for RuntimeError
impl RefFromWasmAbi for RuntimeError
source§type Abi = <JsValue as RefFromWasmAbi>::Abi
type Abi = <JsValue as RefFromWasmAbi>::Abi
Self
are recovered from.source§type Anchor = ManuallyDrop<RuntimeError>
type Anchor = ManuallyDrop<RuntimeError>
Self
for the duration of the
invocation of the function that has an &Self
parameter. This is
required to ensure that the lifetimes don’t persist beyond one function
call, and so that they remain anonymous.source§unsafe fn ref_from_abi(
js: <RuntimeError as RefFromWasmAbi>::Abi,
) -> <RuntimeError as RefFromWasmAbi>::Anchor
unsafe fn ref_from_abi( js: <RuntimeError as RefFromWasmAbi>::Abi, ) -> <RuntimeError as RefFromWasmAbi>::Anchor
impl Eq for RuntimeError
impl StructuralPartialEq for RuntimeError
Auto Trait Implementations§
impl Freeze for RuntimeError
impl RefUnwindSafe for RuntimeError
impl !Send for RuntimeError
impl !Sync for RuntimeError
impl Unpin for RuntimeError
impl UnwindSafe for RuntimeError
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)source§impl<T> ReturnWasmAbi for Twhere
T: IntoWasmAbi,
impl<T> ReturnWasmAbi for Twhere
T: IntoWasmAbi,
source§type Abi = <T as IntoWasmAbi>::Abi
type Abi = <T as IntoWasmAbi>::Abi
IntoWasmAbi::Abi
source§fn return_abi(self) -> <T as ReturnWasmAbi>::Abi
fn return_abi(self) -> <T as ReturnWasmAbi>::Abi
IntoWasmAbi::into_abi
, except that it may throw and never
return in the case of Err
.