/*
* Copyright (c) 2011 Google Inc.
*
* All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse
* Public License v1.0 which accompanies this distribution, and is available at
*
* http://www.eclipse.org/legal/epl-v10.html
*/
package com.google.eclipse.protobuf.ui.parser;
import org.antlr.runtime.CharStream;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.xtext.nodemodel.impl.NodeModelBuilder;
import org.eclipse.xtext.parser.IParseResult;
import org.eclipse.xtext.parser.ParseResult;
import org.eclipse.xtext.ui.editor.preferences.IPreferenceStoreAccess;
import com.google.eclipse.protobuf.parser.NonProto2Protobuf;
import com.google.eclipse.protobuf.parser.antlr.ProtobufParser;
import com.google.eclipse.protobuf.protobuf.Protobuf;
import com.google.eclipse.protobuf.ui.preferences.misc.MiscellaneousPreferences;
import com.google.inject.Inject;
/**
* @author alruiz@google.com (Alex Ruiz)
*/
public class PreferenceDrivenProtobufParser extends ProtobufParser {
@Inject private IPreferenceStoreAccess storeAccess;
@Override protected IParseResult doParse(String ruleName, CharStream in, NodeModelBuilder builder,
int initialLookAhead) {
IParseResult result = super.doParse(ruleName, in, builder, initialLookAhead);
MiscellaneousPreferences preferences = new MiscellaneousPreferences(storeAccess);
if (preferences.isGoogleInternal() && isNotProto2(result)) {
return new ParseResult(new NonProto2Protobuf(), result.getRootNode(), false);
}
return result;
}
private boolean isNotProto2(IParseResult result) {
EObject rootObj = result.getRootASTElement();
if (rootObj instanceof Protobuf) {
Protobuf root = (Protobuf) result.getRootASTElement();
return root == null || root.getSyntax() == null;
}
return rootObj == null;
}
}