/*
* Copyright 2010 Red Hat, Inc. and/or its affiliates.
*
* 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 org.drools.eclipse.editors.scanners;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.rules.IPredicateRule;
import org.eclipse.jface.text.rules.IToken;
import org.eclipse.jface.text.rules.MultiLineRule;
import org.eclipse.jface.text.rules.RuleBasedPartitionScanner;
import org.eclipse.jface.text.rules.Token;
/**
* Break apart the rule source, very very simply.
*
* The job of the partitioner is to identify if the cursor position
* is in a rule block, or not. Comments are also generated as a
* separate partition.
* TODO: add support for dialect based partitioning for correct syntaxhighlighting
*/
public class DRLPartionScanner extends RuleBasedPartitionScanner {
public static final String RULE_PART_CONTENT = "__partition_rule_content";
public static final String RULE_COMMENT = "__partition_multiline_comment";
public static final String[] LEGAL_CONTENT_TYPES = {
IDocument.DEFAULT_CONTENT_TYPE,
RULE_PART_CONTENT,
RULE_COMMENT
};
public DRLPartionScanner() {
initialise();
}
private void initialise() {
List<IPredicateRule> rules = new ArrayList<IPredicateRule>();
// rules
IToken rulePartition = new Token(RULE_PART_CONTENT);
rules.add(new MultiLineRule("\nrule", "\nend", rulePartition));
//a query is really just a rule for most purposes.
rules.add(new MultiLineRule("\nquery", "\nend", rulePartition));
// comments
IToken comment = new Token(RULE_COMMENT);
rules.add( new MultiLineRule("/*", "*/", comment, (char) 0, true));
setPredicateRules(rules.toArray(new IPredicateRule[rules.size()]));
}
}