From 4f242d34298a24ec39f47f33455e5cfa4ad191ed Mon Sep 17 00:00:00 2001
From: Jan Koehnlein <jan.koehnlein@itemis.de>
Date: Tue, 29 Jan 2013 17:23:52 +0100
Subject: [PATCH] [xtend][highlighting] syntax highlighting for contextual
 keywords from FeatureCallID

Change-Id: I8e7792bcaf22f6f1f18ec84676c84ce78ef75e6c
---
 ...nRecursiveKeywordAlternativeConverter.java | 101 ------------------
 1 file changed, 101 deletions(-)
 delete mode 100644 plugins/org.eclipse.xtext/src/org/eclipse/xtext/conversion/impl/NonRecursiveKeywordAlternativeConverter.java

diff --git a/plugins/org.eclipse.xtext/src/org/eclipse/xtext/conversion/impl/NonRecursiveKeywordAlternativeConverter.java b/plugins/org.eclipse.xtext/src/org/eclipse/xtext/conversion/impl/NonRecursiveKeywordAlternativeConverter.java
deleted file mode 100644
index 75a851c67..000000000
--- a/plugins/org.eclipse.xtext/src/org/eclipse/xtext/conversion/impl/NonRecursiveKeywordAlternativeConverter.java
+++ /dev/null
@@ -1,101 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2011 itemis AG (http://www.itemis.eu) and others.
- * 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 org.eclipse.xtext.conversion.impl;
-
-import java.util.Set;
-
-import org.eclipse.xtext.AbstractElement;
-import org.eclipse.xtext.AbstractRule;
-import org.eclipse.xtext.Alternatives;
-import org.eclipse.xtext.GrammarUtil;
-import org.eclipse.xtext.Keyword;
-import org.eclipse.xtext.RuleCall;
-import org.eclipse.xtext.TerminalRule;
-import org.eclipse.xtext.conversion.IValueConverter;
-import org.eclipse.xtext.conversion.IValueConverterService;
-import org.eclipse.xtext.conversion.ValueConverterException;
-import org.eclipse.xtext.nodemodel.INode;
-
-import com.google.common.collect.ImmutableSet;
-import com.google.inject.Inject;
-
-/**
- * @author Jan Koehnlein - Initial contribution and API
- * @since 2.4
- */
-public class NonRecursiveKeywordAlternativeConverter extends AbstractValueConverter<String> implements IValueConverter.RuleSpecific {
-
-	private Set<String> keywords;
-	
-	private AbstractRule terminalRule;
-	
-	@Inject
-	private IValueConverterService delegateService;
-
-	private AbstractRule rule;
-
-	public String toValue(String string, INode node) throws ValueConverterException {
-		if (keywords.contains(string))
-			return string;
-		String result = (String) delegateService.toValue(string, terminalRule.getName(), node);
-		return result;
-	}
-
-	public String toString(String value) throws ValueConverterException {
-		if (keywords.contains(value))
-			return value;
-		String result = delegateService.toString(value, terminalRule.getName());
-		return result;
-	}
-
-	protected String keywordToString(Keyword keyword) {
-		return keyword.getValue();
-	}
-
-	/**
-	 * @throws IllegalArgumentException if the rule is not a datatype rule or does not fulfill
-	 *   the pattern <pre>RuleName: 'keyword' | 'other';</pre>
-	 */
-	public void setRule(AbstractRule rule) {
-		this.rule = rule;
-		ImmutableSet.Builder<String> builder = ImmutableSet.builder();
-		handleRule(rule, builder);
-		keywords = builder.build();
-		if(terminalRule == null)
-			throw new IllegalArgumentException("Could not find terminal rule in call graph of " + rule.getName());
-	}
-
-	protected void handleRule(AbstractRule rule, ImmutableSet.Builder<String> builder) {
-		if(rule instanceof TerminalRule) {
-			if(terminalRule != null) 
-				throw new IllegalArgumentException("Terminal rule is already set in " + this.rule.getName());
-			terminalRule = rule;
-			return;			
-		}
-		if (!GrammarUtil.isDatatypeRule(rule))
-			throw new IllegalArgumentException(rule.getName() + " is not a data type rule");
-		if (!(rule.getAlternatives() instanceof Alternatives)) {
-			if (rule.getAlternatives() instanceof RuleCall) {
-				handleRule(((RuleCall) rule.getAlternatives()).getRule(), builder);
-			}
-			throw new IllegalArgumentException(rule.getName() + " is not an alternative and not a rule call");
-		}
-		Alternatives alternatives = (Alternatives) rule.getAlternatives();
-		for(AbstractElement element: alternatives.getElements()) {
-			if (element instanceof Keyword) {
-				builder.add(keywordToString((Keyword) element));
-			} else if (element instanceof RuleCall) {
-				AbstractRule calledRule = ((RuleCall) element).getRule();
-				handleRule(calledRule, builder);
-			} else {
-				throw new IllegalArgumentException(rule.getName() + "'s body does not contain an alternative of keywords and a single rule");
-			}
-		}
-	} 
-	
-}