Method compareEquality

src/main/java/org/dynjs/runtime/Types.java:551–619

(ExecutionContext context, Object lhs, Object rhs)

    }

    public static boolean compareEquality(ExecutionContext context, Object lhs, Object rhs) {
        // 11.9.3

        if (lhs.getClass().equals(rhs.getClass()) || (lhs instanceof Number && rhs instanceof Number)) {
            if (lhs == Types.UNDEFINED) {
                return true;
            }
            if (lhs == Types.NULL) {
                return true;
            }
            if (lhs instanceof Number) {
                if (lhs instanceof Double) {
                    if (((Double) lhs).isNaN()) {
                        return false;
                    }
                }
                if (rhs instanceof Double) {
                    if (((Double) rhs).isNaN()) {
                        return false;
                    }
                }
                if (((Number) lhs).doubleValue() == ((Number) rhs)
                        .doubleValue()) {
                    return true;
                }
                return false;
            }
            if (lhs instanceof String || lhs instanceof Boolean) {
                return lhs.equals(rhs);
            }
            if (lhs == rhs) {
                return true;
            }
        }

        if (lhs == Types.UNDEFINED && rhs == Types.NULL) {
            return true;
        }

        if (lhs == Types.NULL && rhs == Types.UNDEFINED) {
            return true;
        }

        if (lhs instanceof Number && rhs instanceof String) {
            return compareEquality(context, lhs, toNumber(context, rhs));
        }

        if (lhs instanceof String && rhs instanceof Number) {
            return compareEquality(context, toNumber(context, lhs), rhs);
        }

        if (lhs instanceof Boolean) {
            return compareEquality(context, toNumber(context, lhs), rhs);
        }

        if (rhs instanceof Boolean) {
            return compareEquality(context, lhs, toNumber(context, rhs));
        }