content: /**
   * 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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 org.apache.atlas.groovy;
  
  import java.util.Collections;
  import java.util.List;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  /**
   * Represents a literal value.
   */
  public class LiteralExpression extends AbstractGroovyExpression {
      public static final LiteralExpression TRUE  = new LiteralExpression(true);
      public static final LiteralExpression FALSE = new LiteralExpression(false);
      public static final LiteralExpression NULL  = new LiteralExpression(null);
  
      private final Object  value;
      private       boolean translateToParameter;
      private       boolean addTypeSuffix;
  
      public LiteralExpression(Object value, boolean addTypeSuffix) {
          this.value                = value;
          this.translateToParameter = value instanceof String;
          this.addTypeSuffix        = addTypeSuffix;
      }
  
      public LiteralExpression(Object value, boolean addTypeSuffix, boolean translateToParameter) {
          this.value                = value;
          this.translateToParameter = translateToParameter;
          this.addTypeSuffix        = addTypeSuffix;
      }
  
      public LiteralExpression(Object value) {
          this.value                = value;
          this.translateToParameter = value instanceof String;
      }
  
      @Override
      public void generateGroovy(GroovyGenerationContext context) {
          if (translateToParameter) {
              GroovyExpression result = context.addParameter(value);
  
              result.generateGroovy(context);
  
              return;
          }
  
          if (value instanceof String) {
              String escapedValue = getEscapedValue();
  
              context.append("'");
              context.append(escapedValue);
              context.append("'");
          } else {
              context.append(String.valueOf(value));
              context.append(getTypeSuffix());
          }
      }
  
      @Override
      public List<GroovyExpression> getChildren() {
          return Collections.emptyList();
      }
  
      @Override
      public GroovyExpression copy(List<GroovyExpression> newChildren) {
          return new LiteralExpression(value, addTypeSuffix, translateToParameter);
      }
  
      public Object getValue() {
          return value;
      }
  
      public void setTranslateToParameter(boolean translateToParameter) {
          this.translateToParameter = translateToParameter;
      }
  
      private String getTypeSuffix() {
          if (!addTypeSuffix) {
              return "";
          }
  
          if (value.getClass() == Long.class) {
              return "L";
          }
  
          if (value.getClass() == Float.class) {
              return "f";
          }
  
          if (value.getClass() == Double.class) {
              return "d";
          }
  
          return "";
      }
  
      private String getEscapedValue() {
          String escapedValue = (String) value;
  
          escapedValue = escapedValue.replaceAll(Pattern.quote("\\"), Matcher.quoteReplacement("\\\\"));
          escapedValue = escapedValue.replaceAll(Pattern.quote("'"), Matcher.quoteReplacement("\\'"));
  
          return escapedValue;
      }
  }
  