Struct sapp_jsutils::JsObject [−][src]
Pointer type for Js allocated object Consider this as a Box, but pointing into JS memory -1 is nil
Implementations
impl JsObject
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pub fn weak(&self) -> JsObjectWeak
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Get a weak reference to js memory No guarantees against js garbage collector
impl JsObject
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pub fn string(string: &str) -> JsObject
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Allocate new javascript object with string type
pub fn buffer(data: &[u8]) -> JsObject
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Allocate new javascript object with Uint8Array type
pub fn object() -> JsObject
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Allocate new javascript object with object type. Like “var object = {}” in JS.
pub fn to_string(&self, buf: &mut String)
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Read JS object content to a given string Will panic if object is not a string Will not allocate memory if string is large enough, will use “String::reserve” otherwise
pub fn to_byte_buffer(&self, buf: &mut Vec<u8>)
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Read JS object content to a given bytes buffer Will panic if object is not a buffer Will use .resize() on “buf”, so if “buf” is large enough - no memory is going to be allocated here
pub fn field(&self, field: &str) -> JsObject
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Get a new JsObject from this object .field Will panic if self is not an object or map
pub fn field_u32(&self, field: &str) -> u32
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Get a value from this object .field Will panic if self is not an object or map
pub fn have_field(&self, field: &str) -> bool
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.field == undefined
pub fn field_f32(&self, field: &str) -> f32
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Get a value from this object .field Will panic if self is not an object or map
pub fn set_field_f32(&self, field: &str, data: f32)
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Set .field or [“field”] to given f32, like “object.field = data”; Will panic if self is not an object or map
pub fn set_field_string(&self, field: &str, data: &str)
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Set .field or [“field”] to given string, like “object.field = data”; Will panic if self is not an object or map
pub fn is_nil(&self) -> bool
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JS function returning JsObject may return -1 instead. Those JsObject are considering nil and if function may do this JsObjects should be checked for nil. Unfortunately this is not typecheked by rust complier at all, so any “f() -> JsObject” function may return nil
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for JsObject
impl Send for JsObject
impl Sync for JsObject
impl Unpin for JsObject
impl UnwindSafe for JsObject
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,