examples/Mini/ASTInteger.java

/* Generated By:JJTree: Do not edit this line. ASTInteger.java */
/* JJT: 0.3pre1 */

package Mini;
import org.apache.bcel.classfile.*;
import org.apache.bcel.generic.*;

/**
 *
 * @version $Id$
 * @author  <A HREF="http://www.berlin.de/~markus.dahm/">M. Dahm</A>
 */
public class ASTInteger extends ASTExpr {
  private int value;

  // Generated methods
  ASTInteger(int id) {
    super(id);
  }

  ASTInteger(MiniParser p, int id) {
    super(p, id);
  }

  public static Node jjtCreate(MiniParser p, int id) {
    return new ASTInteger(p, id);
  }

  // closeNode, dump inherited from Expr

  /**
   * @return identifier and line/column number of appearance
   */
  public String toString() {
    return super.toString() + " = " + value;
  }

  /**
   * Overrides ASTExpr.traverse()
   */
  public ASTExpr traverse(Environment env) {
    this.env = env;
    return this; // Nothing to reduce/traverse here
  }

  /**
   * Second pass
   * Overrides AstExpr.eval()
   * @return type of expression
   */
  public int eval(int expected) {
    is_simple = true; // (Very) simple expression, always true

    return type = T_INT;
  }

  /**
   * Fourth pass, produce Java code.
   */
  public void code(StringBuffer buf) {
    ASTFunDecl.push(buf, "" + value);
  }

  /**
   * Fifth pass, produce Java byte code.
   */
  public void byte_code(InstructionList il, MethodGen method, ConstantPoolGen cp) {
    il.append(new PUSH(cp, value)); ASTFunDecl.push();
  }

  void setValue(int value) { this.value = value; }
  int  getValue()          { return value; }
}