/*
 * Copyright 2015 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.template.soy.pysrc.restricted;

import com.google.template.soy.shared.restricted.SoyPrintDirective;
import java.util.List;

/**
 * Interface for a Soy print directive implemented for the Python Source backend.
 *
 * <p>Important: This may only be used in implementing print directive plugins.
 *
 */
public interface SoyPySrcPrintDirective extends SoyPrintDirective {

  /**
   * Applies this directive on the given string value.
   *
   * <p>Important note when implementing this method: The string value may not yet have been coerced
   * to a string. You may need to explicitly coerce it to a string expression using {@link
   * com.google.template.soy.pysrc.restricted.PyExpr#toPyString}.
   *
   * @param value The value to apply the directive on. This value may not yet have been coerced to a
   *     string.
   * @param args The directive's arguments, if any (usually none).
   * @return The resulting value.
   */
  public PyExpr applyForPySrc(PyExpr value, List<PyExpr> args);
}
