60 lines
1.6 KiB
Java
60 lines
1.6 KiB
Java
package it.cavallium.warppi.math.rules.dsl.patterns;
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import it.cavallium.warppi.math.Function;
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import it.cavallium.warppi.math.MathContext;
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import it.cavallium.warppi.math.functions.equations.Equation;
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import it.cavallium.warppi.math.rules.dsl.Pattern;
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import it.cavallium.warppi.math.rules.dsl.VisitorPattern;
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import java.util.Map;
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import java.util.Objects;
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import java.util.stream.Stream;
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/**
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* Matches and generates an equation of two other patterns.
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*/
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public class EquationPattern extends VisitorPattern {
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private final Pattern left;
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private final Pattern right;
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public EquationPattern(final Pattern left, final Pattern right) {
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this.left = left;
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this.right = right;
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}
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@Override
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public Boolean visit(final Equation equation, final Map<String, Function> subFunctions) {
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return left.match(equation.getParameter1(), subFunctions)
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&& right.match(equation.getParameter2(), subFunctions);
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}
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@Override
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public Function replace(final MathContext mathContext, final Map<String, Function> subFunctions) {
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return new Equation(
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mathContext,
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left.replace(mathContext, subFunctions),
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right.replace(mathContext, subFunctions)
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);
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}
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@Override
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public Stream<SubFunctionPattern> getSubFunctions() {
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return Stream.of(left, right)
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.flatMap(Pattern::getSubFunctions);
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}
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@Override
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public boolean equals(final Object o) {
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if (!(o instanceof EquationPattern)) {
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return false;
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}
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final EquationPattern other = (EquationPattern) o;
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return left.equals(other.left) && right.equals(other.right);
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}
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@Override
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public int hashCode() {
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return Objects.hash(left, right);
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}
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}
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