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'jdbacl' stands for 'Java DataBase ACcess Layer' and provides utilities for accessing JDBC databases from Java programs, retrieving meta information in an object model and querying database data. 'rapiddweller jdbacl' is forked from Databene jdbacl by Volker Bergmann.

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/*
 * (c) Copyright 2011-2014 by Volker Bergmann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, is permitted under the terms of the
 * GNU General Public License (GPL).
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
 * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
 * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

package com.rapiddweller.jdbacl.sql.parser;

import org.antlr.runtime.ANTLRInputStream;
import org.antlr.runtime.ANTLRStringStream;
import org.antlr.runtime.CharStream;

/**
 * Helper class which provides the content of a string as {@link ANTLRInputStream}
 * while transforming token characters to upper case.


 * Created: 07.06.2011 20:04:29
 *
 * @author Volker Bergmann
 * @since 0.1
 */
public class ANTLRNoCaseStringStream extends ANTLRStringStream implements TextHolder {

  private final String text;

  /**
   * Instantiates a new Antlr no case string stream.
   *
   * @param text the text
   */
  public ANTLRNoCaseStringStream(String text) {
    super(text);
    this.text = text;
  }

  @Override
  public int LA(int i) {
    if (i == 0) {
      return 0; // undefined
    }
    if (i < 0) {
      i++; // e.g., translate LA(-1) to use offset 0
    }
    if ((p + i - 1) >= n) {
      return CharStream.EOF;
    }
    return Character.toUpperCase(data[p + i - 1]);
  }

  @Override
  public String toString() {
    return new String(data);
  }

  @Override
  public String getText() {
    return text;
  }

}