Method parseAssignmentExpression

parser/expression.go:1234–1365

()

}

func (self *_parser) parseAssignmentExpression() ast.Expression {
	start := self.idx
	parenthesis := false
	async := false
	var state parserState
	switch self.token {
	case token.LEFT_PARENTHESIS:
		self.mark(&state)
		parenthesis = true
	case token.ASYNC:
		tok := self.peek()
		if self.isBindingId(tok) {
			// async x => ...
			self.next()
			return self.parseSingleArgArrowFunction(start, true)
		} else if tok == token.LEFT_PARENTHESIS {
			self.mark(&state)
			async = true
		}
	case token.YIELD:
		if self.scope.allowYield {
			return self.parseYieldExpression()
		}
		fallthrough
	default:
		self.tokenToBindingId()
	}
	left := self.parseConditionalExpression()
	var operator token.Token
	switch self.token {
	case token.ASSIGN:
		operator = self.token
	case token.ADD_ASSIGN:
		operator = token.PLUS
	case token.SUBTRACT_ASSIGN:
		operator = token.MINUS
	case token.MULTIPLY_ASSIGN:
		operator = token.MULTIPLY
	case token.EXPONENT_ASSIGN:
		operator = token.EXPONENT
	case token.QUOTIENT_ASSIGN:
		operator = token.SLASH
	case token.REMAINDER_ASSIGN:
		operator = token.REMAINDER
	case token.AND_ASSIGN:
		operator = token.AND
	case token.OR_ASSIGN:
		operator = token.OR
	case token.EXCLUSIVE_OR_ASSIGN:
		operator = token.EXCLUSIVE_OR
	case token.SHIFT_LEFT_ASSIGN:
		operator = token.SHIFT_LEFT
	case token.SHIFT_RIGHT_ASSIGN:
		operator = token.SHIFT_RIGHT
	case token.UNSIGNED_SHIFT_RIGHT_ASSIGN:
		operator = token.UNSIGNED_SHIFT_RIGHT
	case token.LOGICAL_AND_ASSIGN:
		operator = token.LOGICAL_AND