Struct FunctionInfo 

pub struct FunctionInfo {
    pub name: Option<JsString>,
    pub param_count: usize,
    pub is_generator: bool,
    pub is_async: bool,
    pub is_arrow: bool,
    pub uses_arguments: bool,
    pub uses_this: bool,
    pub param_names: Vec<JsString>,
    pub rest_param: Option<usize>,
    pub binding_count: usize,
}

Function metadata

Fields

name: Option<JsString>

Function name (if any)

param_count: usize

Number of parameters

is_generator: bool

Whether this is a generator function

is_async: bool

Whether this is an async function

is_arrow: bool

Whether this is an arrow function

uses_arguments: bool

Whether function uses arguments

uses_this: bool

Whether function uses this

param_names: Vec<JsString>

Parameter names (for creating environment)

rest_param: Option<usize>

Rest parameter index (if any)

binding_count: usize

Expected number of bindings in the function’s environment Used to pre-size the HashMap to avoid resizing during execution

Implementations

impl FunctionInfo

pub fn regular(name: Option<JsString>, param_count: usize) -> Self

Create info for a regular function

pub fn arrow(param_count: usize) -> Self

Create info for an arrow function

pub fn generator(name: Option<JsString>, param_count: usize) -> Self

Create info for a generator function

pub fn async_fn(name: Option<JsString>, param_count: usize) -> Self

Create info for an async function

Trait Implementations

impl Clone for FunctionInfo

fn clone(&self) -> FunctionInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FunctionInfo

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

Formats the value using the given formatter.