/* $Id$ */
/**
* 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
*
* 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 org.apache.manifoldcf.scriptengine;
/** Set command. */
public class SetCommand implements Command
{
/** Parse and execute. Parsing begins right after the command name, and should stop before the trailing semicolon.
*@param sp is the script parser to use to help in the parsing.
*@param currentStream is the current token stream.
*@return true to send a break signal, false otherwise.
*/
public boolean parseAndExecute(ScriptParser sp, TokenStream currentStream)
throws ScriptException
{
VariableReference lhs = sp.evaluateExpression(currentStream);
if (lhs == null)
sp.syntaxError(currentStream,"Missing lhs expression in set command");
Token t = currentStream.peek();
if (t == null || t.getPunctuation() == null || !t.getPunctuation().equals("="))
sp.syntaxError(currentStream,"Missing '=' in set command");
currentStream.skip();
VariableReference rhs = sp.evaluateExpression(currentStream);
if (rhs == null)
sp.syntaxError(currentStream,"Missing rhs expression in set command");
lhs.setReference(rhs.resolve());
return false;
}
/** Parse and skip. Parsing begins right after the command name, and should stop before the trailing semicolon.
*@param sp is the script parser to use to help in the parsing.
*@param currentStream is the current token stream.
*/
public void parseAndSkip(ScriptParser sp, TokenStream currentStream)
throws ScriptException
{
if (sp.skipExpression(currentStream) == false)
sp.syntaxError(currentStream,"Missing lhs expression in set command");
Token t = currentStream.peek();
if (t == null || t.getPunctuation() == null || !t.getPunctuation().equals("="))
sp.syntaxError(currentStream,"Missing '=' in set command");
currentStream.skip();
if (sp.skipExpression(currentStream) == false)
sp.syntaxError(currentStream,"Missing rhs expression in set command");
}
}