Struct EcmaStringBuilder 

pub struct EcmaStringBuilder(/* private fields */);

The owned accumulation path for exact ECMAScript strings.

Implementations

impl EcmaStringBuilder

pub const fn new() -> Self

Creates an empty builder.

pub fn with_capacity(capacity: usize) -> Self

Creates an empty builder with room for capacity code units.

pub fn push_unit(&mut self, unit: u16)

Appends one exact UTF-16 code unit.

pub fn push_utf8(&mut self, value: &str)

Encodes and appends a UTF-8 string as UTF-16 code units.

pub fn push_code_point( &mut self, code_point: u32, ) -> Result<(), InvalidCodePoint>

Appends one Unicode code point as UTF-16 code units.

Values in the BMP, including surrogate values, append one code unit; supplementary scalar values append a surrogate pair.

Errors

Returns InvalidCodePoint for values greater than U+10FFFF rather than truncating them to a u16.

pub fn len_units(&self) -> usize

Returns the number of accumulated UTF-16 code units.

pub fn finish(self) -> EcmaString

Finishes this builder into an immutable string.

Trait Implementations

impl Default for EcmaStringBuilder

fn default() -> EcmaStringBuilder

Returns the “default value” for a type.