Struct boa::JsString

pub struct JsString { /* fields omitted */ }

This represents a JavaScript primitive string.

This is similar to Rc<str>. But unlike Rc<str> which stores the length on the stack and a pointer to the data (this is also known as fat pointers). The JsString length and data is stored on the heap. and just an non-null pointer is kept, so its size is the size of a pointer.

Implementations

impl JsString

pub fn empty() -> Self

Create an empty string, same as calling default.

pub fn new<S: AsRef<str>>(s: S) -> Self

Create a new JavaScript string.

pub fn concat<T, U>(x: T, y: U) -> JsString where
    T: AsRef<str>,
    U: AsRef<str>, 

Concatenate two string.

pub fn concat_array(strings: &[&str]) -> JsString

Concatenate array of string.

pub fn as_str(&self) -> &str

Return the JavaScript string as a rust &str.

pub fn refcount(this: &Self) -> usize

Gets the number of JsStrings which point to this allocation.

pub fn ptr_eq(x: &Self, y: &Self) -> bool

Returns true if the two JsStrings point to the same allocation (in a vein similar to ptr::eq).

Trait Implementations

impl AsRef<str> for JsString

fn as_ref(&self) -> &str

Performs the conversion.

impl Borrow<str> for JsString

fn borrow(&self) -> &str

Immutably borrows from an owned value.

impl Clone for JsString

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for JsString

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

Formats the value using the given formatter.

impl Default for JsString

fn default() -> Self

Returns the “default value” for a type.

impl Deref for JsString

type Target = str

The resulting type after dereferencing.

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

Dereferences the value.

impl Display for JsString

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

Formats the value using the given formatter.

impl Drop for JsString

fn drop(&mut self)

Executes the destructor for this type.

impl Finalize for JsString

fn finalize(&self)

impl From<&'_ str> for JsString

fn from(s: &str) -> Self

Performs the conversion.

impl From<Box<str, Global>> for JsString

fn from(s: Box<str>) -> Self

Performs the conversion.

impl From<JsString> for FunctionBinding

fn from(name: JsString) -> Self

Performs the conversion.

impl From<JsString> for PropertyKey

fn from(string: JsString) -> PropertyKey

Performs the conversion.

impl From<String> for JsString

fn from(s: String) -> Self

Performs the conversion.

impl Hash for JsString

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 Ord for JsString

fn cmp(&self, other: &Self) -> 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

Restrict a value to a certain interval.

impl PartialEq<&'_ str> for JsString

fn eq(&self, other: &&str) -> 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 !=.

impl PartialEq<JsString> for JsString

fn eq(&self, other: &Self) -> 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 !=.

impl PartialEq<JsString> for str

fn eq(&self, other: &JsString) -> 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 !=.

impl PartialEq<JsString> for &str

fn eq(&self, other: &JsString) -> 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 !=.

impl PartialEq<str> for JsString

fn eq(&self, other: &str) -> 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 !=.

impl PartialOrd<JsString> for JsString

fn partial_cmp(&self, other: &Self) -> 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 Trace for JsString

unsafe fn trace(&self)

Marks all contained Gcs.

unsafe fn root(&self)

Increments the root-count of all contained Gcs.

unsafe fn unroot(&self)

Decrements the root-count of all contained Gcs.

fn finalize_glue(&self)

Runs Finalize::finalize() on this object and all contained subobjects

impl Eq for JsString