99 lines
2.8 KiB
Java
99 lines
2.8 KiB
Java
/*
|
|
SETTINGS: (please don't move this part)
|
|
PATH=VariableRule1
|
|
*/
|
|
|
|
import org.warp.picalculator.math.Function;
|
|
import org.warp.picalculator.math.FunctionOperator;
|
|
import org.warp.picalculator.math.FunctionDynamic;
|
|
import org.warp.picalculator.math.FunctionSingle;
|
|
import org.warp.picalculator.math.MathContext;
|
|
//Imports
|
|
|
|
|
|
import org.warp.picalculator.Error;
|
|
import org.warp.picalculator.math.Function;
|
|
import org.warp.picalculator.math.FunctionOperator;
|
|
import org.warp.picalculator.math.MathContext;
|
|
import org.warp.picalculator.math.functions.Multiplication;
|
|
import org.warp.picalculator.math.functions.Subtraction;
|
|
import org.warp.picalculator.math.functions.Sum;
|
|
import org.warp.picalculator.math.rules.Rule;
|
|
import org.warp.picalculator.math.rules.RuleType;
|
|
|
|
import it.unimi.dsi.fastutil.objects.ObjectArrayList;
|
|
|
|
/**
|
|
* Variable rule
|
|
* ax+bx=(a+b)*x (a,b NUMBER; x VARIABLE|MULTIPLICATION)
|
|
*
|
|
* @author Andrea Cavalli
|
|
*
|
|
*/
|
|
public class VariableRule1 implements Rule {
|
|
// Rule name
|
|
@Override
|
|
public String getRuleName() {
|
|
return "VariableRule1";
|
|
}
|
|
|
|
// Rule type
|
|
@Override
|
|
public RuleType getRuleType() {
|
|
return RuleType.REDUCTION;
|
|
}
|
|
|
|
/* Rule function
|
|
Returns:
|
|
- null if it's not executable on the function "f"
|
|
- An ObjectArrayList<Function> if it did something
|
|
*/
|
|
|
|
@Override
|
|
public ObjectArrayList<Function> execute(Function f) {
|
|
boolean isExecutable = false;
|
|
if (f instanceof Subtraction || f instanceof Sum) {
|
|
FunctionOperator fnc = (FunctionOperator) f;
|
|
if (fnc.getParameter1() instanceof Multiplication & fnc.getParameter2() instanceof Multiplication) {
|
|
FunctionOperator m1 = (FunctionOperator) fnc.getParameter1();
|
|
FunctionOperator m2 = (FunctionOperator) fnc.getParameter2();
|
|
if (m1.getParameter1().equals(m2.getParameter1()) || m1.getParameter2().equals(m2.getParameter2())) {
|
|
isExecutable = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isExecutable) {
|
|
FunctionOperator fnc = (FunctionOperator) f;
|
|
MathContext root = fnc.getMathContext();
|
|
ObjectArrayList<Function> result = new ObjectArrayList<>();
|
|
FunctionOperator m1 = (FunctionOperator) fnc.getParameter1();
|
|
FunctionOperator m2 = (FunctionOperator) fnc.getParameter2();
|
|
Function a;
|
|
Function b;
|
|
Function x;
|
|
if (m1.getParameter2().equals(m2.getParameter2())) {
|
|
x = m1.getParameter2();
|
|
a = m1.getParameter1();
|
|
b = m2.getParameter1();
|
|
} else {
|
|
x = m1.getParameter1();
|
|
a = m1.getParameter2();
|
|
b = m2.getParameter2();
|
|
}
|
|
|
|
Function rets;
|
|
if (fnc instanceof Sum) {
|
|
rets = new Sum(root, a, b);
|
|
} else {
|
|
rets = new Subtraction(root, a, b);
|
|
}
|
|
Function retm = new Multiplication(root, rets, x);
|
|
result.add(retm);
|
|
return result;
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
}
|