Struct boa::builtins::function::Function

pub struct Function {
    pub body: FunctionBody,
    pub params: Box<[FormalParameter]>,
    pub this_mode: ThisMode,
    pub environment: Option<Environment>,
    // some fields omitted
}

Boa representation of a Function Object.

https://tc39.es/ecma262/#sec-ecmascript-function-objects

Fields

body: FunctionBody

Call/Construct Function body

params: Box<[FormalParameter]>

Formal Paramaters

this_mode: ThisMode

This Mode

environment: Option<Environment>

Implementations

impl Function

pub fn new<P>(
    parameter_list: P,
    scope: Option<Environment>,
    body: FunctionBody,
    this_mode: ThisMode,
    constructable: bool,
    callable: bool
) -> Self where
    P: Into<Box<[FormalParameter]>>, 

pub fn ordinary<P>(
    parameter_list: P,
    scope: Environment,
    body: StatementList,
    this_mode: ThisMode
) -> Self where
    P: Into<Box<[FormalParameter]>>, 

This will create an ordinary function object

https://tc39.es/ecma262/#sec-ordinaryfunctioncreate

pub fn builtin<P>(parameter_list: P, body: NativeFunctionData) -> Self where
    P: Into<Box<[FormalParameter]>>, 

This will create a built-in function object

https://tc39.es/ecma262/#sec-createbuiltinfunction

pub fn call(
    &self,
    function: Value,
    this: &Value,
    args_list: &[Value],
    interpreter: &mut Interpreter
) -> ResultValue

This will handle calls for both ordinary and built-in functions

https://tc39.es/ecma262/#sec-prepareforordinarycall https://tc39.es/ecma262/#sec-ecmascript-function-objects-call-thisargument-argumentslist

pub fn construct(
    &self,
    function: Value,
    this: &Value,
    args_list: &[Value],
    interpreter: &mut Interpreter
) -> ResultValue

https://tc39.es/ecma262/#sec-ecmascript-function-objects-construct-argumentslist-newtarget

pub fn is_callable(&self) -> bool

Returns true if the function object is callable.

pub fn is_constructable(&self) -> bool

Returns true if the function object is constructable.

Trait Implementations

impl Clone for Function

fn clone(&self) -> Function

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Function

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

Formats the value using the given formatter.

impl Drop for Function

fn drop(&mut self)

Executes the destructor for this type.

impl Finalize for Function

fn finalize(&self)

impl Trace for Function

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