org.snapscript.tree.condition.Comparison Maven / Gradle / Ivy
package org.snapscript.tree.condition;
import org.snapscript.core.Evaluation;
import org.snapscript.core.Scope;
import org.snapscript.core.Value;
import org.snapscript.parse.StringToken;
public class Comparison implements Evaluation {
private final RelationalOperator operator;
private final Evaluation left;
private final Evaluation right;
public Comparison(Evaluation left) {
this(left, null, null);
}
public Comparison(Evaluation left, StringToken operator, Evaluation right) {
this.operator = RelationalOperator.resolveOperator(operator);
this.left = left;
this.right = right;
}
@Override
public Value evaluate(Scope scope, Object context) throws Exception {
if(right != null) {
Value leftResult = left.evaluate(scope, null);
Value rightResult = right.evaluate(scope, null);
return operator.operate(scope, leftResult, rightResult);
}
return left.evaluate(scope, null);
}
}