123 lines
2.8 KiB
Java
Executable File
123 lines
2.8 KiB
Java
Executable File
package org.warp.picalculator.math;
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import org.warp.picalculator.Error;
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import org.warp.picalculator.math.rules.Rule;
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import it.unimi.dsi.fastutil.objects.ObjectArrayList;
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public abstract class FunctionSingle implements Function {
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/**
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* Create a new instance of FunctionSingle. The Math Context will be the
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* same of <strong>value</strong>'s.
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*
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* @throws NullPointerException
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* when value is null.
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* @param value
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* The parameter of this function.
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*/
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public FunctionSingle(Function value) throws NullPointerException {
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mathContext = value.getMathContext();
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parameter = value;
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}
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/**
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* Create a new instance of FunctionSingle.
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*
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* @param mathContext
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* Math Context
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*/
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public FunctionSingle(MathContext mathContext) {
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this.mathContext = mathContext;
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parameter = null;
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}
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/**
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* Create a new instance of FunctionSingle.
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*
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* @param mathContext
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* Math Context
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* @param value
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* The parameter of this function.
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*/
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public FunctionSingle(MathContext mathContext, Function value) {
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this.mathContext = mathContext;
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parameter = value;
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}
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protected final MathContext mathContext;
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/**
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* Function parameter.<br>
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* <u>MUST NOT BE MODIFIED IF ALREADY SET UP.</u>
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*/
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protected Function parameter;
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/**
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*
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* @return Parameter.
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*/
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public Function getParameter() {
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return parameter;
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}
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/**
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*
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* @param var
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* Parameter.
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* @return A new instance of this function.
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*/
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public FunctionSingle setParameter(Function value) {
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final FunctionSingle s = clone();
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s.parameter = value;
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return s;
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}
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@Override
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public FunctionSingle setParameter(int index, Function var) throws IndexOutOfBoundsException {
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if (index == 0) {
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return this.setParameter(var);
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} else {
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throw new IndexOutOfBoundsException();
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}
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}
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@Override
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public Function getParameter(int index) throws IndexOutOfBoundsException {
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if (index == 0) {
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return this.getParameter();
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} else {
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throw new IndexOutOfBoundsException();
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}
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}
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@Override
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public MathContext getMathContext() {
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return mathContext;
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}
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@Override
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public final ObjectArrayList<Function> simplify(Rule rule) throws Error, InterruptedException {
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ObjectArrayList<Function> simplifiedParam = parameter.simplify(rule);
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if (simplifiedParam == null) return rule.execute(this);
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ObjectArrayList<Function> result = new ObjectArrayList<>();
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for (final Function f : simplifiedParam) {
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result.add(this.setParameter(f));
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}
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return result;
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}
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@Override
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public abstract FunctionSingle clone();
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@Override
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public int hashCode() {
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return parameter.hashCode() + 883 * super.hashCode();
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}
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@Override
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public abstract boolean equals(Object o);
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}
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