85 lines
1.8 KiB
Java
85 lines
1.8 KiB
Java
package expression;
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import java.math.BigDecimal;
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import java.math.BigInteger;
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import java.util.List;
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/**
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* @author Doschennikov Nikita (me@fymio.us)
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*/
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public class Const extends AbstractExpression {
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private final int intValue;
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private final BigInteger biValue;
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private final BigDecimal bdValue;
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private final String repr;
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public Const(int value) {
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this.intValue = value;
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this.biValue = BigInteger.valueOf(value);
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this.bdValue = BigDecimal.valueOf(value);
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this.repr = Integer.toString(value);
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}
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public Const(BigInteger value) {
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this.intValue = value.intValueExact();
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this.biValue = value;
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this.bdValue = new BigDecimal(value);
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this.repr = value.toString();
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}
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public Const(BigDecimal value) {
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this.bdValue = value;
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this.biValue = value.toBigIntegerExact();
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this.intValue = biValue.intValueExact();
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this.repr = value.toPlainString();
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}
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@Override
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public int evaluate(int x) {
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return intValue;
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}
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@Override
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public int evaluate(int x, int y, int z) {
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return intValue;
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}
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@Override
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public int evaluate(List<Integer> vars) {
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return intValue;
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}
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@Override
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public BigInteger evaluateBi(List<BigInteger> vars) {
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return biValue;
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}
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@Override
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public BigDecimal evaluateBd(List<BigDecimal> vars) {
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return bdValue;
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}
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@Override
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public String toString() {
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return repr;
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}
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@Override
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public String toMiniString() {
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return repr;
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj) return true;
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if (!(obj instanceof Const)) return false;
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return repr.equals(((Const) obj).repr);
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}
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@Override
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public int hashCode() {
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return repr.hashCode();
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}
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}
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