// Copyright (C) 2005 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.caja.parser.js;
import com.google.caja.lexer.FilePosition;
import com.google.caja.lexer.TokenConsumer;
import com.google.caja.parser.AbstractParseTreeNode;
import com.google.caja.render.Concatenator;
import com.google.caja.render.JsPrettyPrinter;
import com.google.caja.parser.ParseTreeNode;
import com.google.caja.util.Callback;
import java.io.IOException;
import javax.annotation.Nullable;
/**
*
* @author mikesamuel@gmail.com
*/
public abstract class AbstractExpression
extends AbstractParseTreeNode implements Expression {
private static final long serialVersionUID = 6796876031318912717L;
@ReflectiveCtor
public AbstractExpression(
FilePosition pos, Class<? extends ParseTreeNode> childClass) {
super(pos, childClass);
}
public boolean isLeftHandSide() { return false; }
public final TokenConsumer makeRenderer(
Appendable out, Callback<IOException> exHandler) {
return new JsPrettyPrinter(new Concatenator(out, exHandler));
}
public Expression simplifyForSideEffect() { return this; }
public @Nullable Boolean conditionResult() { return null; }
public Expression fold(boolean isFn) { return this; }
}