Struct swc_ecma_utils::function::FunctionWrapper

pub struct FunctionWrapper<T> {
    pub binding_ident: Option<Ident>,
    pub function: Expr,
    // some fields omitted
}

Fields

binding_ident: Option<Ident>

function: Expr

Trait Implementations

impl From<ArrowExpr> for FunctionWrapper<Expr>

fn from(_: ArrowExpr) -> Self

Performs the conversion.

impl From<FnDecl> for FunctionWrapper<FnDecl>

fn from(fn_decl: FnDecl) -> Self

Performs the conversion.

impl From<FnExpr> for FunctionWrapper<Expr>

fn from(fn_expr: FnExpr) -> Self

Performs the conversion.

impl From<FunctionWrapper<Expr>> for FnWrapperResult<FnExpr, FnDecl>

fn from(value: FunctionWrapper<Expr>) -> Self

Performs the conversion.

impl From<FunctionWrapper<FnDecl>> for FnWrapperResult<FnDecl, FnDecl>

fn from(value: FunctionWrapper<FnDecl>) -> Self

Performs the conversion.

impl Into<Expr> for FunctionWrapper<Expr>

fn into(self) -> Expr

If a function has a function name, it may be called recursively. We use the named expression to hoist the function name internally Therefore, its recursive calls refer to the correct identity.

Else if a function has a binding name, it may be called recursively as well. But it refer the binding name which exist the outer scope. It is safe to using anonymous expression wrapper.

Optimization: A function without a name cannot be recursively referenced by Ident. It’s safe to return the expr without wrapper if the params.len is 0.