Struct rquickjs_core::Coerced

#[repr(transparent)]
pub struct Coerced<T>(pub T);

The wrapper for values to force coercion

// Coercion to string
assert_eq!(ctx.eval::<Coerced<String>, _>("`abc`")?.0, "abc");
assert_eq!(ctx.eval::<Coerced<String>, _>("123")?.0, "123");
assert_eq!(ctx.eval::<Coerced<String>, _>("[1,'a']")?.0, "1,a");
assert_eq!(ctx.eval::<Coerced<String>, _>("({})")?.0, "[object Object]");

// Coercion to integer
assert!(ctx.eval::<i32, _>("123.5").is_err());
assert_eq!(ctx.eval::<Coerced<i32>, _>("123.5")?.0, 123);

assert!(ctx.eval::<i32, _>("`123`").is_err());
assert_eq!(ctx.eval::<Coerced<i32>, _>("`123`")?.0, 123);

// Coercion to floating-point
assert_eq!(ctx.eval::<f64, _>("123")?, 123.0);
assert_eq!(ctx.eval::<Coerced<f64>, _>("123")?.0, 123.0);

assert!(ctx.eval::<f64, _>("`123.5`").is_err());
assert_eq!(ctx.eval::<Coerced<f64>, _>("`123.5`")?.0, 123.5);

Tuple Fields

0: T

Trait Implementations

impl<T> AsMut<T> for Coerced<T>

fn as_mut(&mut self) -> &mut T

Converts this type into a mutable reference of the (usually inferred) input type.

impl<T> AsRef<T> for Coerced<T>

fn as_ref(&self) -> &T

Converts this type into a shared reference of the (usually inferred) input type.

impl<T: Clone> Clone for Coerced<T>

fn clone(&self) -> Coerced<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for Coerced<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> Deref for Coerced<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T> DerefMut for Coerced<T>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<'js> FromJs<'js> for Coerced<StdString>

Coerce a value to a string in the same way javascript would coerce values.

fn from_js(ctx: Ctx<'js>, value: Value<'js>) -> Result<Self>

impl<'js> FromJs<'js> for Coerced<String<'js>>

Coerce a value to a string in the same way javascript would coerce values.

fn from_js(ctx: Ctx<'js>, value: Value<'js>) -> Result<Self>

impl<'js> FromJs<'js> for Coerced<bool>

Coerce a value to a bool in the same way javascript would coerce values

fn from_js(ctx: Ctx<'js>, value: Value<'js>) -> Result<Self>

impl<'js> FromJs<'js> for Coerced<f64>

Coerce a value to a f64 in the same way javascript would coerce values

fn from_js(ctx: Ctx<'js>, value: Value<'js>) -> Result<Self>

impl<'js> FromJs<'js> for Coerced<i32>

Coerce a value to a i32 in the same way javascript would coerce values

fn from_js(ctx: Ctx<'js>, value: Value<'js>) -> Result<Self>

impl<'js> FromJs<'js> for Coerced<i64>

Coerce a value to a i64 in the same way javascript would coerce values

fn from_js(ctx: Ctx<'js>, value: Value<'js>) -> Result<Self>

impl<'js> FromJs<'js> for Coerced<u64>

Coerce a value to a u64 in the same way javascript would coerce values

fn from_js(ctx: Ctx<'js>, value: Value<'js>) -> Result<Self>

impl<T: Hash> Hash for Coerced<T>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<T: Ord> Ord for Coerced<T>

fn cmp(&self, other: &Coerced<T>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self where
    Self: PartialOrd<Self>, 

Restrict a value to a certain interval.

impl<T: PartialEq> PartialEq<Coerced<T>> for Coerced<T>

fn eq(&self, other: &Coerced<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: PartialOrd> PartialOrd<Coerced<T>> for Coerced<T>

fn partial_cmp(&self, other: &Coerced<T>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: Copy> Copy for Coerced<T>

impl<T: Eq> Eq for Coerced<T>

impl<T> StructuralEq for Coerced<T>

impl<T> StructuralPartialEq for Coerced<T>