software.crldev.elrondspringbootstarterreactive.domain.esdt.common.TokenDecimals Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of elrond-spring-boot-starter-reactive Show documentation

A SpringBoot Starter solution designed to ensure easy and efficient integration with the Elrond Network using a Reactive API layer.

The newest version!

package software.crldev.elrondspringbootstarterreactive.domain.esdt.common;

import software.crldev.elrondspringbootstarterreactive.error.ErrorMessage;
import software.crldev.elrondspringbootstarterreactive.util.HexValidator;

/**
 * Value object for ESDT token decimals
 *
 * @author carlo_stanciu
 */
public final class TokenDecimals {
    private final Integer decimals;

    private TokenDecimals(Integer decimals) {
        this.decimals = decimals;
    }

    /**
     * Creates an TokenDecimals object from number input
     *
     * @return - an instance of TokenDecimals
     */
    public static TokenDecimals fromNumber(Integer decimals) {
        verifyDecimals(decimals);
        return new TokenDecimals(decimals);
    }

    /**
     * Creates an TokenDecimals object from String inputs
     *
     * @return - an instance of TokenDecimals
     */
    public static TokenDecimals fromString(String decimals) {
        var decimalsNumber = Integer.parseInt(decimals.strip());
        verifyDecimals(decimalsNumber);
        return fromNumber(decimalsNumber);
    }

    /**
     * Getter
     *
     * @return - hex value of the decimals
     */
    public String getHex() {
        return HexValidator.processNumberHexArgument(Integer.toString(decimals, 16));
    }

    /**
     * Returns the value
     *
     * @return - value in String format
     */
    @Override
    public String toString() {
        return decimals.toString();
    }

    private static void verifyDecimals(Integer decimals) {
        if (!(decimals >= 0 && decimals <= 18 && decimals % 2 == 0)) throw new IllegalArgumentException(ErrorMessage.TOKEN_DECIMALS.getValue());
    }

    public Integer getDecimals() {
        return this.decimals;
    }

    @Override
    public boolean equals(final Object o) {
        if (o == this) return true;
        if (!(o instanceof TokenDecimals)) return false;
        final TokenDecimals other = (TokenDecimals) o;
        final Object this$decimals = this.getDecimals();
        final Object other$decimals = other.getDecimals();
        if (this$decimals == null ? other$decimals != null : !this$decimals.equals(other$decimals)) return false;
        return true;
    }

    @Override
    public int hashCode() {
        final int PRIME = 59;
        int result = 1;
        final Object $decimals = this.getDecimals();
        result = result * PRIME + ($decimals == null ? 43 : $decimals.hashCode());
        return result;
    }
}