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package bjc.dicelang.neodice.commands;
import static bjc.dicelang.neodice.statements.StatementValue.Type.*;
import java.util.*;
import bjc.dicelang.neodice.*;
import bjc.dicelang.neodice.statements.*;
/**
* A command that produces a polyhedral die.
*
* @author Ben Culkin
*
*/
public class PolyhedralDieCommand implements Command {
@Override
public StatementValue execute(Iterator<String> words, DieBoxCLI state) {
if (!words.hasNext()) {
throw new DieBoxException("Number of sides to polyhedral-die must be provided");
} else {
StatementValue sideValue = state.runStatement(words);
if (sideValue.type == INTEGER) {
int numSides = ((IntegerStatementValue)sideValue).value;
if (numSides < 0) throw new DieBoxException("Number of sides to polyhedral-die was not valid (must be less than 0, was %d)", numSides);
Die<StatementValue> die = Die
.polyhedral(numSides)
.transform(IntegerStatementValue::new);
return new DieStatementValue(INTEGER, die);
} else {
throw new DieBoxException("Number of sides to polyhedral-die wasn't an integer (was %s, of type %s)",
sideValue, sideValue.type);
}
}
}
@Override
public String shortHelp() {
return "create a single polyhedral die";
}
@Override
public String longHelp() {
return "Creates a single polyhedral die with a fixed number of sides";
}
}
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