src/examples/Mini/ASTInteger.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
/* Generated By:JJTree: Do not edit this line. ASTInteger.java */
/* JJT: 0.3pre1 */

package Mini;
import org.apache.bcel.generic.ConstantPoolGen;
import org.apache.bcel.generic.InstructionList;
import org.apache.bcel.generic.MethodGen;
import org.apache.bcel.generic.PUSH;

/**
 *
 */
public class ASTInteger extends ASTExpr {
  private int value;

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

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

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

  // closeNode, dump inherited from Expr

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

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

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

    return type = T_INT;
  }

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

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

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