68 lines
1.5 KiB
Java
68 lines
1.5 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 Negate extends AbstractExpression {
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private final AbstractExpression operand;
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public Negate(AbstractExpression operand) {
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this.operand = operand;
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}
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@Override
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public int evaluate(int x) {
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return -operand.evaluate(x);
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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 -operand.evaluate(x, y, z);
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}
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@Override
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public int evaluate(List<Integer> vars) {
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return -operand.evaluate(vars);
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}
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@Override
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public BigInteger evaluateBi(List<BigInteger> vars) {
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return operand.evaluateBi(vars).negate();
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}
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@Override
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public BigDecimal evaluateBd(List<BigDecimal> vars) {
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return operand.evaluateBd(vars).negate();
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}
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@Override
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public String toString() {
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return "-(" + operand + ")";
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}
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@Override
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public String toMiniString() {
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if (operand instanceof AbstractBinaryOperation) {
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return "-(" + operand.toMiniString() + ")";
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}
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return "- " + operand.toMiniString();
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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 Negate)) return false;
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return operand.equals(((Negate) obj).operand);
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}
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@Override
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public int hashCode() {
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return -operand.hashCode();
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}
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}
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