Sequence.java

package calculator.interpreter.ast;

import java.util.LinkedList;
import calculator.interpreter.Cell;
import calculator.interpreter.Environment;

/**
 * A sequence of the statements to evaluate
 */
public class Sequence extends Expression {
  /** statements to evaluate */
  public final LinkedList<Statement> statements = new LinkedList<Statement>();

  @Override
  public Object eval(Environment env) {
    Cell result = new Cell();
    for (Statement s : statements) {
      result.value = null;
      env = s.eval(env, result);
    }
    return result.value;
  }
}