61 lines
1.6 KiB
Java
61 lines
1.6 KiB
Java
package it.cavallium.warppi.math.rules.functions;
|
|
/*
|
|
SETTINGS: (please don't move this part)
|
|
PATH=functions.VariableRule
|
|
*/
|
|
|
|
import org.nevec.rjm.BigDecimalMath;
|
|
|
|
import it.cavallium.warppi.math.Function;
|
|
import it.cavallium.warppi.math.MathContext;
|
|
import it.cavallium.warppi.math.MathematicalSymbols;
|
|
import it.cavallium.warppi.math.functions.Number;
|
|
import it.cavallium.warppi.math.functions.Variable;
|
|
import it.cavallium.warppi.math.rules.Rule;
|
|
import it.cavallium.warppi.math.rules.RuleType;
|
|
import it.cavallium.warppi.util.Error;
|
|
import it.cavallium.warppi.util.Utils;
|
|
import it.unimi.dsi.fastutil.objects.ObjectArrayList;
|
|
|
|
/**
|
|
* Variable
|
|
* a = n
|
|
*
|
|
* @author Andrea Cavalli
|
|
*
|
|
*/
|
|
public class VariableRule implements Rule {
|
|
// Rule name
|
|
@Override
|
|
public String getRuleName() {
|
|
return "Variable";
|
|
}
|
|
|
|
// Rule type
|
|
@Override
|
|
public RuleType getRuleType() {
|
|
return RuleType.CALCULATION;
|
|
}
|
|
|
|
/* 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(final Function f) throws Error {
|
|
if (f instanceof Variable) {
|
|
final ObjectArrayList<Function> result = new ObjectArrayList<>();
|
|
final Character variable = ((Variable) f).getChar();
|
|
final MathContext mathContext = f.getMathContext();
|
|
if (mathContext.exactMode == false)
|
|
if (variable.equals(MathematicalSymbols.PI)) {
|
|
//a = n
|
|
result.add(new Number(mathContext, BigDecimalMath.pi(new java.math.MathContext(Utils.scale, Utils.scaleMode2))));
|
|
return result;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
}
|