Method statement

core/src/renderer/js/ast.rs:385–418

https://262.ecma-international.org/12.0/#prod-Statement AssignmentExpression ::= ( LeftHandSideExpression AssignmentOperator AssignmentExpression | ConditionalExpression ) Expression ::= AssignmentExpression ( "," AssignmentExpression ) VariableStatement ::= "var" VariableDeclarationList ( ";" )? ExpressionStatement ::= Expression ( ";" )? ReturnStatement ::= "return" ( Expression )? ( ";" )?

(&mut self)

    ///
    /// Statement ::= ExpressionStatement | VariableStatement | ReturnStatement
    fn statement(&mut self) -> Option<Rc<Node>> {
        let t = match self.t.peek() {
            Some(t) => t,
            None => return None,
        };

        let node = match t {
            Token::Keyword(keyword) => {
                if keyword == "var" {
                    // consume "var"
                    assert!(self.t.next().is_some());

                    self.variable_declaration()
                } else if keyword == "return" {
                    // consume "return"
                    assert!(self.t.next().is_some());

                    Node::new_return_statement(self.assignment_expression())
                } else {
                    None
                }
            }
            _ => Node::new_expression_statement(self.assignment_expression()),
        };

        if let Some(Token::Punctuator(c)) = self.t.peek() {
            // consume ';'
            if c == &';' {
                assert!(self.t.next().is_some());
            }
        }

        node
    }

    /// FunctionBody ::= "{" ( SourceElements )? "}"
    fn function_body(&mut self) -> Option<Rc<Node>> {