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