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package bjc.pratt.commands;
/**
* A operator with fixed precedence.
*
* @author bjculkin
*
* @param <K>
* The key type of the tokens.
*
* @param <V>
* The value type of the tokens.
*
* @param <C>
* The state type of the parser.
*/
public abstract class BinaryPostCommand<K, V, C> extends NonInitialCommand<K, V, C> {
private final int leftPower;
/**
* Create a new operator with fixed precedence.
*
* @param precedence
* The precedence of the operator.
*/
public BinaryPostCommand(final int precedence) {
if(precedence < 0) throw new IllegalArgumentException("Precedence must be non-negative");
leftPower = precedence;
}
@Override
public int leftBinding() {
return leftPower;
}
}
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