Method parse_iflet_or_expr

cranelift/isle/isle/src/parser.rs:912–930

(&mut self)

    }

    fn parse_iflet_or_expr(&mut self) -> Result<IfLetOrExpr> {
        let pos = self.pos();
        if self.is_lparen() {
            self.expect_lparen()?;
            let ret = if self.eat_sym_str("if-let")? {
                IfLetOrExpr::IfLet(self.parse_iflet()?)
            } else if self.eat_sym_str("if")? {
                // Shorthand form: `(if (x))` desugars to `(if-let _
                // (x))`.
                IfLetOrExpr::IfLet(self.parse_iflet_if()?)
            } else {
                IfLetOrExpr::Expr(self.parse_expr_inner_parens(pos)?)
            };
            self.expect_rparen()?;
            Ok(ret)
        } else {
            self.parse_expr().map(IfLetOrExpr::Expr)
        }
    }

    fn parse_iflet(&mut self) -> Result<IfLet> {
        let pos = self.pos();