Struct swc_ecma_utils::ExprCtx

pub struct ExprCtx {
    pub unresolved_ctxt: SyntaxContext,
    pub is_unresolved_ref_safe: bool,
}

Fields

unresolved_ctxt: SyntaxContext

This SyntaxContext should be applied only to unresolved references.

In other words, this should be applied to identifier references to global objects like Object or Math, and when those are not shadowed by a local declaration.

is_unresolved_ref_safe: bool

True for argument of typeof.

Implementations

impl ExprCtx

pub fn preserve_effects<I>(&self, span: Span, val: Expr, exprs: I) -> Expr

where I: IntoIterator<Item = Box<Expr>>,

make a new expression which evaluates val preserving side effects, if any.

pub fn extract_side_effects_to(&self, to: &mut Vec<Box<Expr>>, expr: Expr)

Add side effects of expr to to. This function preserves order and conditions. (think a() ? yield b() : c())

Trait Implementations

impl Clone for ExprCtx

fn clone(&self) -> ExprCtx

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExprCtx

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

Formats the value using the given formatter.