/*
 * Copyright 2011 Google Inc.
 *
 * Licensed 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.
 */
package com.google.gwt.codegen.server;

/**
 * A SourceWriter that accumulates source and returns it in the
 * {@link #toString()} method.
 * <p>
 * Experimental API - subject to change.
 */
public class StringSourceWriter extends SourceWriterBase {

  private final StringBuilder buf = new StringBuilder();
  private boolean aborted = false;

  @Override
  public void abort() {
    aborted = true;
  }

  @Override
  public String toString() {
    return aborted ? null : buf.toString();
  }

  @Override
  protected void writeString(String s) {
    buf.append(s);
  }
}