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/*******************************************************************************
* Copyright (c) 2014 protos software gmbh (http://www.protos.de).
* 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
*
* CONTRIBUTORS:
* Henrik Rentz-Reichert (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.core.ui.highlight;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.etrice.core.common.ui.highlight.BaseSemanticHighlighter;
import org.eclipse.etrice.core.converter.RoomValueConverterService;
import org.eclipse.etrice.core.fsm.fSM.DetailCode;
import org.eclipse.etrice.core.services.RoomGrammarAccess;
import org.eclipse.etrice.core.ui.util.UIExpressionUtil;
import org.eclipse.etrice.core.ui.util.UIExpressionUtil.ExpressionCache;
import org.eclipse.etrice.expressions.detailcode.IDetailExpressionProvider;
import org.eclipse.etrice.expressions.ui.highlight.ExpressionRuleFactory;
import org.eclipse.etrice.expressions.ui.highlight.TargetLanguageRuleFactory;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.rules.IRule;
import org.eclipse.jface.text.rules.IToken;
import org.eclipse.jface.text.rules.RuleBasedScanner;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.xtext.RuleCall;
import org.eclipse.xtext.ide.editor.syntaxcoloring.IHighlightedPositionAcceptor;
import org.eclipse.xtext.nodemodel.INode;
import org.eclipse.xtext.resource.XtextResource;
import org.eclipse.xtext.util.CancelIndicator;
import com.google.common.collect.Iterables;
import com.google.inject.Inject;
/**
* @author Henrik Rentz-Reichert
*
*/
public class RoomSemanticHighlightingCalculator extends BaseSemanticHighlighter {
@Inject
RoomGrammarAccess grammar;
@Inject
RoomValueConverterService converterService;
@Override
public void provideHighlightingFor(XtextResource resource, IHighlightedPositionAcceptor acceptor, CancelIndicator cancelIndicator) {
if (resource == null || resource.getParseResult() == null)
return;
ExpressionCache expressionCache = new ExpressionCache();
INode root = resource.getParseResult().getRootNode();
for (INode node : root.getAsTreeIterable()) {
if(cancelIndicator.isCanceled())
break;
super.provideHighlightingFor(node, resource, acceptor);
EObject obj = node.getGrammarElement();
if (obj instanceof RuleCall) {
RuleCall ruleCall = (RuleCall) obj;
if(ruleCall.getRule() == grammar.getAnnotationRule()){
acceptor.addPosition(node.getOffset(), node.getLength(), RoomHighlightingConfiguration.HL_ANNOTATION_ID);
}
else if(ruleCall.getRule() == grammar.getCC_STRINGRule()) {
detailCodeHighlight(node, acceptor, expressionCache);
}
}
}
}
protected void detailCodeHighlight(INode node, IHighlightedPositionAcceptor acceptor, ExpressionCache cache) {
final String text = converterService.getCC_StringConverter().stripDelim(node.getText());
final int offset = node.getOffset() + converterService.getCC_StringConverter().getDelim().length();
DetailCode dc = null;
if(node.getParent().getSemanticElement() instanceof DetailCode) {
dc = (DetailCode) node.getParent().getSemanticElement();
}
IDetailExpressionProvider exprProvider = UIExpressionUtil.getExpressionProvider(dc, null, cache);
XtextHighlightStyles styles = new XtextHighlightStyles();
RuleBasedScanner scanner = new RuleBasedScanner();
scanner.setRules(Iterables.toArray(Iterables.concat(
TargetLanguageRuleFactory.getGeneralLiteralRules(styles),
ExpressionRuleFactory.getInitialExpressionRules(exprProvider, styles),
TargetLanguageRuleFactory.getGeneralKeywordRules(styles))
, IRule.class));
scanner.setRange(new Document(text), 0, text.length());
IToken lastToken = null;
while(lastToken != Token.EOF) {
lastToken = scanner.nextToken();
if(lastToken != null && lastToken.getData() != null) {
acceptor.addPosition(offset + scanner.getTokenOffset(), scanner.getTokenLength(), (String) lastToken.getData());
}
}
}
}
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