Trait ExprFactory

pub trait ExprFactory: Into<Box<Expr>> {
Show 21 methods    // Provided methods
    fn as_arg(self) -> ExprOrSpread { ... }
    fn into_stmt(self) -> Stmt { ... }
    fn into_return_stmt(self) -> ReturnStmt { ... }
    fn as_callee(self) -> Callee { ... }
    fn as_iife(self) -> CallExpr { ... }
    fn into_lazy_arrow(self, params: Vec<Pat>) -> ArrowExpr { ... }
    fn into_lazy_fn(self, params: Vec<Param>) -> Function { ... }
    fn into_lazy_auto(self, params: Vec<Pat>, support_arrow: bool) -> Expr { ... }
    fn into_var_decl(self, kind: VarDeclKind, name: Pat) -> VarDecl { ... }
    fn into_new_expr(
        self,
        span: Span,
        args: Option<Vec<ExprOrSpread>>,
    ) -> NewExpr { ... }
    fn apply(self, span: Span, this: Box<Expr>, args: Vec<ExprOrSpread>) -> Expr { ... }
    fn call_fn(self, span: Span, args: Vec<ExprOrSpread>) -> Expr { ... }
    fn as_call(self, span: Span, args: Vec<ExprOrSpread>) -> Expr { ... }
    fn as_fn_decl(self) -> Option<FnDecl> { ... }
    fn as_class_decl(self) -> Option<ClassDecl> { ... }
    fn wrap_with_paren(self) -> Expr { ... }
    fn make_eq<T>(self, right: T) -> Expr
       where T: Into<Expr> { ... }
    fn make_bin<T>(self, op: BinaryOp, right: T) -> Expr
       where T: Into<Expr> { ... }
    fn make_assign_to(self, op: AssignOp, left: AssignTarget) -> Expr { ... }
    fn make_member(self, prop: IdentName) -> MemberExpr { ... }
    fn computed_member<T>(self, prop: T) -> MemberExpr
       where T: Into<Box<Expr>> { ... }
}

Available on crate features __ecma and __utils only.

Expand description

Extension methods for Expr.

Note that many types implements Into<Expr> and you can do like

use swc_ecma_utils::ExprFactory;

let _args = vec![0f64.as_arg()];

to create literals. Almost all rust core types implements Into<Expr>.

Provided Methods§

fn as_arg(self) -> ExprOrSpread

Creates an ExprOrSpread using the given Expr.

This is recommended way to create ExprOrSpread.

§Example

use swc_common::DUMMY_SP;
use swc_ecma_ast::*;
use swc_ecma_utils::ExprFactory;

let first = Lit::Num(Number {
    span: DUMMY_SP,
    value: 0.0,
    raw: None,
});
let _args = vec![first.as_arg()];